Entries |
Document | Title | Date |
20080196408 | VARIABLE GEOMETRY EXHAUST COOLER - The present invention provides an exhaust cooler mounted to a tailpipe for receiving exhaust gas. The exhaust cooler includes a jet pump connectable to the tailpipe and a nozzle connectable to the tailpipe. The nozzle defines a nozzle opening between the tailpipe and the jet pump for communicating the exhaust gas from the tailpipe to the jet pump. A first member is included that is moveable between a closed position and an open position, the open position defining a first opening between the tailpipe and the jet pump for communicating the exhaust gas from the tailpipe to the jet pump. | 08-21-2008 |
20080202118 | Diesel engine system with exhaust gas recirculation - A diesel engine system includes a diesel engine, a throttle valve, an EGR (Exhaust Gas Recirculation) path, an EGR valve and a controller. The throttle valve controls a flow rate of intake air to the diesel engine. Exhaust gas is recirculated along the EGR path from an exhaust port to an intake port of the diesel engine. The EGR valve controls a flow rate of the exhaust gas. The controller controls the throttle valve and the EGR valve such that an opening of the throttle valve decreases and an opening of the EGR valve increases when a load of the diesel engine increases. The controller controls the EGR valve such that the opening of the EGR valve increases after the opening of the EGR valve is held constant for a first predetermined holding time. | 08-28-2008 |
20080209906 | Boost Pressure Control Apparatus and Boost Pressure Control Method of Internal Combustion Engine - A boost pressure control apparatus includes a turbocharger whose turbine is rotationally driven by exhaust of an internal combustion engine, and an EGR device, wherein EGR is performed at the time of supercharge, or the EGR amount is increased at the time of supercharge in comparison with when supercharge is not performed. If the internal EGR gas amount is increased by changing opening/closure timings of intake valves and/or exhaust valves via the EGR device, the energy of exhaust can be increased, so that the rotation speed of the turbocharger can be enhanced. Therefore, the responsiveness of boost pressure rise can be enhanced. Thus, a technology of more promptly raising the boost pressure is provided. | 09-04-2008 |
20080216475 | Internal combustion engine - In an internal combustion engine with at least one turbo-charger including a compressor and a turbine, a charge air supply line for supplying compressed air from the compressor to the engine cylinders which are divided into a first group and a second group, an exhaust gas collection line having a first section connected to the first group of cylinders and a second section connected to the second group of cylinders, a first exhaust gas line which connects the first section of the exhaust gas collection line to the turbine, a recirculation line for returning exhaust gas from the second section of the exhaust gas collection line to the charge air supply line, and a first control device for controlling the exhaust gas flow from the second section to the first section of the exhaust gas collection line, a second control device is arranged in the first exhaust gas line for controlling the exhaust gas flow to the turbine and a third control device is arranged in the exhaust gas recirculation line for controlling the exhaust gas flow recirculated to the charge air supply line. | 09-11-2008 |
20080216476 | TURBOCHARGED INTERNAL COMBUSTION ENGINE WITH EGR SYSTEM HAVING REVERSE FLOW - An internal combustion engine includes a block defining at least one combustion cylinder. An intake manifold is fluidly coupled with at least one combustion cylinder, and an exhaust manifold is also fluidly coupled with at least one combustion cylinder. An exhaust gas recirculation system is fluidly coupled between the exhaust manifold and the intake manifold. A turbocharger includes a variable geometry turbine fluidly coupled with the exhaust manifold. The variable geometry turbine is movable to a first position effecting fluid flow of exhaust gas from the exhaust manifold to the intake manifold, and movable to a second position effecting fluid flow of charge air to the variable geometry turbine. | 09-11-2008 |
20080223037 | TURBOCHARGER ASSEMBLY WITH CATALYST COATING - A turbocharger assembly is provided. The turbocharger assembly includes a turbine assembly having at least one internal aerodynamic surface and a compressor assembly having at least one internal aerodynamic surface. At least one of the at least one internal aerodynamic surface of the turbine assembly and the at least one internal aerodynamic surface of the compressor assembly is at least partially coated with a catalyst material. The internal aerodynamic surfaces of the turbine assembly may include a volute, variable geometry mechanism, turbine wheel, and outlet. The internal aerodynamic surfaces of the compressor assembly may include and inlet, compressor impeller, diffuser, variable geometry mechanism, and a volute. An internal combustion engine incorporating the disclosed turbocharger assembly is also provided. | 09-18-2008 |
20080223038 | Arrangement for Recirculating and Cooling Exhaust Gas of an Internal Combustion Engine - The invention relates to an arrangement for recirculating and cooling exhaust gas of an internal combustion engine ( | 09-18-2008 |
20080229744 | EXHAUST GAS RECIRCULATION FOR AN INTERNAL COMBUSTION ENGINE AND METHOD THEREFOR - An internal combustion engine ( | 09-25-2008 |
20080245070 | Method and system to operate diesel engine using real time six dimensional empirical diesel exhaust pressure model - A method to estimate real-time exhaust pressure in a compression ignition engine with variable geometry turbocharger and an EGR by adding the turbocharger RPM, the engine RPM, EGR value position and intake manifold pressure to determine a final turbocharger turbine inlet pressure to control NOx emissions. | 10-09-2008 |
20080256949 | Arrangement for Recirculation of Exhaust Gases of a Supercharged Internal Combustion Engine - An arrangement for recirculation of exhaust gases of a supercharged combustion engine in a vehicle. A first EGR cooler effects a first step of cooling the recirculating exhaust gases in the return line by means of a cooling medium in the form of a cooling air flow, and a second EGR cooler effects a second step of cooling the recirculating exhaust gases in the return line by means of a cooling medium which is at substantially the temperature of the surroundings. The first EGR cooler is fitted in an internal region of the vehicle which is adapted to have the cooling air flow passing through it during operation of the combustion engine. | 10-23-2008 |
20080264060 | Exhaust Gas Recirculation Mixer for a Turbo-Charged Internal Combustion Engine - An EGR mixer arrangement for mixing gas into the intake air of a turbocharged internal combustion engine is provided. The arrangement includes an inlet port with connection for a branch pipe, which with an insertion section opens out into the inlet port. The insertion section forms a diffuser vane with a surface which is positively double-bent in the direction of flow of the intake air and which extends in a curved shape in the flow direction of the inlet port. | 10-30-2008 |
20080271451 | Arrangement for Recirculation of Exhaust Gases of a Supercharged Internal Combustion Engine - The present invention relates to an arrangement for recirculation of exhaust gases of a supercharged combustion engine. The arrangement comprises an exhaust line intended to lead exhaust gases out from the combustion engine, an inlet line intended to lead air to the combustion engine, a compressor adapted to compressing the air in the inlet line to above atmospheric pressure, and return line which connects the exhaust line to the inlet line. The arrangement comprises an EGR cooler in which the recirculating exhaust gases in the return line are cooled by the air in a portion of the inlet line which is situated upstream of the compressor with respect to the direction of flow of the air in the inlet line. | 11-06-2008 |
20080295515 | ARRANGEMENT OF SUPERCHARGING UNITS FOR SUPERCHARGING AN INTERNAL COMBUSTION ENGINE - The invention is based on an arrangement of supercharging units ( | 12-04-2008 |
20090019850 | Engine Process - A pressure surface is propelled within an engine chamber. Air is introduced into the chamber. The air in the chamber is compressed with the pressure surface. The compressed air is charged with fuel. The fuel is combusted to propel the pressure surface within the chamber. The air and the combusted fuel are exhausted from the chamber. A turbocharger is powered with the exhaust to compress air. The air compressed by the turbo charger is passed into the chamber to propel the pressure surface in the chamber. | 01-22-2009 |
20090019851 | SYSTEM AND METHOD FOR EXHAUST GAS RECIRCULATION - A system and method for controlling EGR of an internal combustion engine is presented. The system is capable of controlling EGR over a wide range of flow rates. | 01-22-2009 |
20090049835 | SUPERCHARGED ENGINE WITH EGR DEVICE - An engine ( | 02-26-2009 |
20090071150 | Mixing Unit for LP-EGR Condensate Into the Compressor - The present invention is a an exhaust gas return system ( | 03-19-2009 |
20090071151 | Configuration Having a Protected Turbocharger in an Exhaust Gas Recirculation Line and Motor Vehicle Having the Configuration - A configuration for treating exhaust gases of an internal combustion engine having a predetermined displacement volume, includes an exhaust gas recirculation line. Exhaust gas flowing through the exhaust gas recirculation line interacts with a turbocharger. A screening layer is provided in the exhaust gas recirculation line upstream of the turobcharger. The screening layer is larger than an average cross section of the exhaust gas recirculation line. A motor vehicle having at least one such configuration is also provided. | 03-19-2009 |
20090077967 | High Flow (Delta P) Differential Pressure EGR System with Provision for Both Flow Control and OBD Monitor - In one approach, a method for measuring exhaust gas recirculation flow in an engine is provided. The method comprises separating EGR flow into at least a first flow and a second flow, passing the separated first flow through a restriction region, where the first flow passes through the restriction region separately from the separated second flow, combining the separated second flow and inducting the combined flows into a cylinder of the engine, where the EGR flow is separated and then combined within a common EGR passage. | 03-26-2009 |
20090077968 | Turbocharged Engine Control Operation with Adjustable Compressor Bypass - A method of operating an engine having a turbocharger and a high pressure EGR system is provided. In one example, a compressor of the turbocharger may have a recirculation passage with a recirculation valve coupled therein. The method may include during a first engine airflow condition: delivering at least some high pressure un-cooled EGR to the intake, downstream of the compressor, operating the throttle at a first throttle amount, and operating the compressor bypass valve at a first bypass amount to increase exhaust gas temperature; and during a second engine airflow condition higher than the first engine airflow: delivering at least some high pressure cooled EGR to the intake, downstream of the compressor, operating the throttle at a second throttle amount more open than the first amount, and operating the compressor bypass valve at a second bypass amount more closed than the first amount. | 03-26-2009 |
20090107141 | SYSTEM FOR RECIRCULATING THE EXHAUST OF A TURBOMACHINE - A portion of the exhaust generated by a turbomachine is recirculated through an inlet portion by an exhaust gas recirculation system. The system reduces the level of harmful constituents within the exhaust before the exhaust is recirculated. | 04-30-2009 |
20090120088 | SYSTEM FOR REDUCING THE SULFUR OXIDES EMISSIONS GENERATED BY A TURBOMACHINE - A portion of the exhaust generated by a turbomachine is recirculated through an inlet portion by an exhaust gas recirculation system. The system reduces the level of Sulfur Oxides and other constituents within the exhaust before the exhaust is recirculated. The system may utilize sea water, fresh water, or combinations thereof; as part of a scrubbing process to reduce the Sulfur Oxides and other constituents. | 05-14-2009 |
20090120089 | PURGE SYSTEM FOR AN EXHAUST GAS RECIRCULATION SYSTEM - The exhaust within an exhaust gas recirculation (EGR) system should be purged to allow for access to the components of the EGR system. A system and method for purging the EGR system is provided. The system and method may incorporate an: EGR purge fan, an EGR purge blower, or a turbomachine. The system and method may draw the exhaust out of the EGR system. The system and method may drive the exhaust out of the EGR system. | 05-14-2009 |
20090145126 | METHOD AND SYSTEM FOR CONTROLLING AN EXHAUST GAS RECIRCULATION SYSTEM - A method and system for controlling an exhaust gas recirculation (EGR) system is provided. The method and system may incorporate a device or devices that continuously monitors an exhaust stream for harmful constituents. The method and system may control components of the EGR system based on the concentration of harmful constituents within the exhaust. | 06-11-2009 |
20090151353 | CONTROL SYSTEM FOR AN EGR PURGE SYSTEM - The exhaust within an exhaust gas recirculation (EGR) system should be purged to allow for access to the components of the EGR system. A method and system for controlling an EGR purge system is provided. The method and system may control the operation of drawing the exhaust out of the EGR system. The method may also control the operation of diving the exhaust out of the EGR system. | 06-18-2009 |
20090158734 | METHOD FOR ADJUSTING THE OPERATION OF A TURBOMACHINE RECEIVING A RECIRCULATED EXHAUST GAS - A method for adjusting the operation of a turbomachine integrated with an exhaust gas recirculation (EGR) system is provided. The method may utilize the composition of an inlet fluid entering the turbomachine. The method may also utilize a variety of turbomachine operating data. | 06-25-2009 |
20090158735 | PRIME MOVER FOR AN EXHAUST GAS RECIRCULATION SYSTEM - A portion of the exhaust generated by a turbomachine is recirculated through an inlet portion by an exhaust gas recirculation system. The system reduces the level of constituents within the exhaust before the exhaust is recirculated. The turbomachine may be utilized to drive the exhaust gas through the system. | 06-25-2009 |
20090173071 | Diesel engine with exhaust gas recirculation system - A diesel engine with an exhaust gas recirculation system. The diesel engine is equipped with a turbocharger, driven by exhaust gas from the engine combustion chamber, providing an intake air flow and an inter-cooler for cooling the intake air compressed by the turbocharger. The exhaust gas recirculation system includes an exhaust gas diverter for diverting a portion of the exhaust gas for recirculation back into the combustion chamber. The diverted exhaust gas is cooled and then forced, with a hydraulic turbine driven blower, into the flow of compressed intake air exiting the inter-cooler. The mixture of compressed intake air and the re-circulated exhaust gas is then directed into the intake manifold of the engine then into the engine combustion chamber. The hydraulic turbine driven blower is driven with high-pressure hydraulic fluid provided by a hydraulic pump driven by the engine drive shaft. A hydraulic bypass system with a bypass control valve permits control of the hydraulic turbine by partial or complete bypassing of the hydraulic turbine. The re-circulated exhaust gas may be cooled with radiator water. In preferred embodiments the exhaust gas is cooled with three stages of air cooling. Cooling of the first stage cooler is provided by a portion of the turbocharger compressed air which than provides driving power to the turbo-fan turbine that drives the cooling fan and supplies cooling air flow to the second and third stage EGR coolers. Optionally, the air to air after-cooler is removed from the front of the engine location and included into the overall EGR—after-cooler turbo-fan air cooled package. | 07-09-2009 |
20090183509 | MULTI-FUNCTIONAL VALVE FOR USE IN AN EXHAUST BREATHING SYSTEM - One embodiment includes a housing ( | 07-23-2009 |
20090205334 | Systems and Methods for Exhaust Gas Recirculation (EGR) for Turbine Engines - Systems and methods may be provided for exhaust gas recirculation. The systems and methods may include receiving, via an intake section, inlet air at an input of a compressor, generating compressed air at the compressor using the received inlet air, and providing the compressed air from the compressor to a combustor, where the combustor produces combustion involving the compressed air and fuel. The systems and methods may also include receiving combustion products associated with the combustion at a turbine component, where the turbine component releases exhaust gases, and recirculating at least a portion of the exhaust gases to the intake section via a recirculation line, where the recirculated exhaust gases raise a temperature of the inlet air. | 08-20-2009 |
20090241541 | PRE-TURBO EXAHUST FILTRATION SYSTEM FOR INTERNAL COMBUSTION ENGINES - An air induction and exhaust system for a diesel engine provides particulate filtering upstream from a turbocharger assembly in the exhaust system. The air induction system provides for compression of the charge air, with an induction compressor being part of a turbocharger system. The exhaust and induction impellers are located outside of a vehicle engine compartment to aid thermal management. The exhaust system provides a diesel particulate filter which is located in the exhaust system in close proximity to an engine exhaust manifold and upstream from the exhaust impeller of the turbocharger. With the diesel particulate filter so located exhaust heat helps initiate carbon oxidation in the filter, and heat generated by oxidation in the filter contributes to turbocharger operation. | 10-01-2009 |
20090313992 | System for Controlling Contaminant Deposition in Exhaust Gas Recirculation Coolers - A system for controlling contaminant deposition in an exhaust recirculation cooler mounted in a vehicle to allow exhaust gas to recirculate along a gas recirculation path from the exhaust assembly of the engine to the intake assembly of the engine. The cooler includes a housing defining an exhaust gas inlet leading to an internal gas cooling passageway which, in turn, leads to an exhaust gas outlet. A controller receives flow dependent signals and, in turn, regulates the flow of exhaust gas through the cooler to establish a turbulent flow in order to control the production of deposits in the cooler. Multiple, varying size coolers can be employed, with separate exhaust flows to the coolers being varied in by determining which coolers should be active, while still maintaining turbulent flow patterns. | 12-24-2009 |
20090320467 | ARRANGEMENT FOR RECIRCULATION OF EXHAUST GASES IN A SUPERCHARGED COMBUSTION ENGINE - An arrangement for recirculation of exhaust gases of a supercharged combustion engine includes a return line for recirculating exhaust gases, an air-cooled EGR cooler and a bypass line having an extent such that it can lead recirculating exhaust gases past the EGR cooler. A valve is operable to be placed in a first position to lead the whole flow of recirculating exhaust gases through the EGR cooler during situations where there is no risk of ice formation in the EGR cooler, and in a second position to lead the whole flow of recirculating exhaust gases through the bypass line during situations where there is risk of ice formation in the EGR cooler. | 12-31-2009 |
20100011765 | TURBOCHARGER - The present invention relates to a turbocharger ( | 01-21-2010 |
20100024416 | Exhaust system having parallel asymmetric turbochargers and EGR - An exhaust system for a use with a combustion engine is provided. The exhaust system may have a first exhaust manifold configured to receive exhaust from the engine, and a first turbocharger driven by exhaust from the first exhaust manifold. The exhaust system may also have a second exhaust manifold configured to receive exhaust from the engine in parallel with the first exhaust manifold, and a second turbocharger driven by exhaust from the second exhaust manifold and having a different flow capacity than the first turbocharger. The exhaust system may further have an exhaust gas recirculation circuit in fluid communication with the second exhaust manifold. | 02-04-2010 |
20100024417 | Exhaust system having 3-way valve - An exhaust system for a use with a combustion engine is provided. The exhaust system may have a first exhaust manifold, a second exhaust manifold, and an exhaust gas recirculation circuit. The exhaust system may also have a fixed geometry turbocharger with a first volute configured to receive exhaust from the first exhaust manifold, and a second volute configured to receive exhaust from the second exhaust manifold. The exhaust system may also have a recirculation control valve in fluid communication with the first exhaust manifold, the second exhaust manifold and the exhaust gas recirculation circuit. The recirculation control valve may have a valve element movable to selectively adjust a flow of exhaust in the exhaust gas recirculation circuit, the first volute, and the second volute. | 02-04-2010 |
20100037608 | Combined High Temperature Exhaust Gas and Charge Air Cooler with Protective Internal Coating - A combined diesel engine exhaust gas and charge air cooler utilizes an all-aluminum construction and a high temperature and corrosion resistant internal coating. | 02-18-2010 |
20100050634 | SYSTEM, METHOD, AND DEVICE FOR LOCOMOTIVE EXHAUST GAS RECIRCULATION COOLING AND CATALYST HEATING - A method of heating an engine exhaust gas of an engine, including flowing a first exhaust gas at a first temperature within and along internal flow channels of a catalyst brick, and flowing a second exhaust gas at a second, different, temperature around an exterior of the catalyst brick. Heat may be transferred between the gases and the catalyst brick to achieve various operations. | 03-04-2010 |
20100058758 | EXHAUST GAS RECIRCULATION SYSTEM, TURBOMACHINE SYSTEM HAVING THE EXHAUST GAS RECIRCULATION SYSTEM AND EXHAUST GAS RECIRCULATION CONTROL METHOD - An exhaust gas recirculation system that includes an exhaust gas recirculation regulator operatively connectable to a turbomachine system, and regulating a predetermined amount of exhaust gas to be recirculated. The exhaust gas recirculation system further includes a measuring unit that measures fuel composition of incoming fuel, and a control unit connected to the EGR regulator and the measuring unit, and determining a Wobbe Index and/or reactivity of the incoming fuel based on the measured fuel composition and determining the predetermined amount of exhaust gas to be recirculated based on the determined Wobbe Index and/or reactivity. | 03-11-2010 |
20100064686 | INTERNAL COMBUSTION ENGINE AND CONTROL SYSTEM FOR INTERNAL COMBUSTION - An internal combustion engine having a turbocharger is provided. The engine includes a turbine of the turbocharger located in an exhaust system of the engine, an upstream side catalyst located upstream of the turbine, a catalyst bypass passage bypassing the upstream side catalyst, a catalyst bypass passage on/off valve for opening and closing the catalyst bypass passage, and a first exhaust gas recirculation passage for recirculating a part of exhaust gases from a portion between the upstream side catalyst and the turbine to an intake system of the engine. The engine, that further includes a second exhaust gas recirculation passage for recirculating a part of exhaust gases from an upstream side of the upstream side catalyst to the intake system, and a switching valve for switching between the first exhaust recirculation passage and the second exhaust recirculation passage, is provided. | 03-18-2010 |
20100071365 | EXHAUST GAS RECIRCULATION SYSTEM - An exhaust gas recirculation system for an internal combustion engine is disclosed. The exhaust gas recirculation system can include a first turbocharger and a second turbocharger with a particulate filter located between the two turbochargers. The first turbocharger can have a first exhaust turbine and a first charger while the second turbocharger can have a second exhaust turbine and a second charger. The particulate filter can be located between the first exhaust turbine and the second exhaust turbine and thereby remove particulates from an exhaust gas before it reaches the second exhaust turbine. In some instances, an exhaust gas recirculation line can be included and have an inlet that is located downstream from the particulate filter. In addition, the exhaust gas recirculation line can have an outlet that is located between the first charger and the second charger, or in the alternative downstream from the first charger. It is appreciated that the internal combustion engine can be a diesel engine and the particulate filter can be a diesel particulate filter. | 03-25-2010 |
20100077747 | Exhaust system having parallel asymmetric turbochargers and EGR - An exhaust system for a use with a combustion engine is provided. The exhaust system may have a first exhaust manifold configured to receive exhaust from the engine, and at least one turbocharger driven by exhaust from the first exhaust manifold. The exhaust system may also have a second exhaust manifold configured to receive exhaust from the engine in parallel with the first exhaust manifold, and at least two turbochargers driven by exhaust from the second exhaust manifold. The exhaust manifold may further have an exhaust gas recirculation circuit in fluid communication with only the first exhaust manifold. A number of turbochargers that receives exhaust from the first exhaust manifold may be less than a number of turbochargers that receives exhaust from the second exhaust manifold. | 04-01-2010 |
20100095673 | INTERNAL COMBUSTION ENGINE HAVING TURBOCHARGING AND LOW-PRESSURE EXHAUST-GAS RECIRCULATION - The description relates to an internal combustion engine having a turbocharger, having a first particle filter in the intake section of the internal combustion engine and having a low-pressure EGR line that comprises a second particle filter. A fast-reacting low-pressure exhaust gas recirculation system with small dimensions can be realized by virtue of the EGR line branching off from the exhaust section upstream of the first particle filter, and the second particle filter being provided with a heater. The description also relates to a corresponding EGR method. | 04-22-2010 |
20100107631 | USING COMPRESSED INTAKE AIR TO CLEAN ENGINE EXHAUST GAS RECIRCULATION COOLER - Systems and methods for using compressed intake air that is free of soot particles to clean the EGR cooler of an internal combustion engine having a turbocharger are provided herein. One example system includes an EGR valve for selectively diverting a portion of exhaust gas through an EGR conduit to an intake side of the internal combustion engine, an EGR cooler disposed in the EGR conduit, the EGR cooler having an exhaust side and an intake side, and a compressed intake air delivery system including a compressed air conduit, the compressed intake air delivery system being configured to selectively divert a portion of compressed intake air compressed by the turbocharger through the EGR cooler to remove soot particles deposited in the EGR cooler. | 05-06-2010 |
20100132356 | Purification System for Variable Post Injection in LP EGR and Control Method for the Same - A purification system for variable post injection in LP EGR, the system includes a turbo charger disposed downstream of a diesel engine, a DPF (catalyzed particulate filter) disposed downstream of the turbo charger, a NOx reduction apparatus disposed upstream or downstream of the DPF, a bypass line diverged from the DPF for mixing exhaust gas and air inflowing the turbo charger, a exhaust gas control portion disposed downstream of the DPF for controlling flowing of the exhaust gas and a lean/rich controlling portion for controlling lean/rich of the exhaust gas. | 06-03-2010 |
20100132357 | INTERNAL COMBUSTION ENGINE SYSTEM - The invention relates to an internal combustion engine system ( | 06-03-2010 |
20100146967 | EMISSION SYSTEM, APPARATUS, AND METHOD - A system, apparatus, and method for exhaust gas recirculation (EGR) is disclosed. The EGR apparatus includes an EGR circuit having an input configured to receive an exhaust gas from an engine exhaust port, an output configured to return the exhaust gas to an intake port of the engine, and an EGR path configured to circulate the exhaust gas between the input and the output. The EGR apparatus also includes an expansion turbine connected to the EGR circuit in the EGR path downstream of the input to receive the exhaust gas, the expansion turbine configured to expand the exhaust gas and reduce a pressure thereof. The EGR apparatus further includes an EGR compressor connected to the EGR path downstream of the expansion turbine and decoupled from the expansion turbine, the EGR compressor configured to compress the exhaust gas for circulation to the output. | 06-17-2010 |
20100146968 | EMISSION SYSTEM, APPARATUS, AND METHOD - A system, apparatus, and method for exhaust gas recirculation (EGR) is disclosed. The EGR apparatus includes an EGR circuit having an input configured to receive an exhaust gas from an engine exhaust port, an output configured to return the exhaust gas to an intake port of the engine, and an EGR path configured to circulate the exhaust gas between the input and the output. The EGR apparatus also includes an EGR compressor connected to the EGR circuit in the EGR path downstream of the input and EGR compressor configured to compress the exhaust gas for circulation to the output. The EGR apparatus further includes a valve system positioned in the EGR circuit and upstream of the EGR compressor to selectively cut off a flow of the exhaust gas to the EGR compressor and selectively inject ambient air into the EGR path. | 06-17-2010 |
20100154416 | CROSSOVER EXHAUST DUCT - A crossover for ducting exhaust produced by an engine. The crossover includes a front inside passage and rear outside passage. The front inside passage is configured to direct exhaust from one or more cylinders associated with a front of the engine to an inside volute of a turbocharger turbine. The rear outside passage is configured to direct exhaust from one or more cylinders associated with a rear of the engine to an outside volute of the turbocharger turbine. The inside volute is closer to the rear of the engine than the outside volute is. | 06-24-2010 |
20100162699 | EXHAUST GAS COOLER - The present invention relates to an exhaust gas cooler ( | 07-01-2010 |
20100199666 | SUPER-TURBOCHARGER HAVING A HIGH SPEED TRACTION DRIVE AND A CONTINUOUSLY VARIABLE TRANSMISSION - A super-turbocharger utilizing a high speed, fixed ratio traction drive that is coupled to a continuously variable transmission to allow for high speed operation is provided. A high speed traction drive is utilized to provide speed reduction from the high speed turbine shaft. A second traction drive provides infinitely variable speed ratios through a continuously variable transmission. Gas recirculation in a super-turbocharger is also disclosed. | 08-12-2010 |
20100293944 | AIR TURBINE DRIVEN EGR PUMP FOR DIESEL ENGINES - A power plant includes an engine configured to receive charge air and produce exhaust. A first turbo machine is configured to be driven by the exhaust and drive a compressor that receives air. The compressor is configured to produce the charge air. A second turbo machine is configured to receive the charge air and rotationally drive a pump in response thereto. The pump is configured to receive an EGR from the exhaust and introduce the pumped EGR to the charge air. The power plant also includes an exhaust gas recirculation passage. The second turbo machine includes a turbine rotationally coupled to the pump. The turbine has an expanded air passage, and the pump is arranged in the exhaust gas recirculation passage. A pre-cooler is arranged in the expanded air passage and in the exhaust gas recirculation passage upstream from the pump. | 11-25-2010 |
20110011084 | EXHAUST GAS RECIRCULATION SYSTEM FOR INTERNAL COMBUSTION ENGINE - An EGR system includes an exhaust gas recirculation pipe recirculating exhaust gas flowing through an exhaust pipe into an intake pipe upstream of a compressor of a supercharger. A swirling flow generator generates a swirling flow of intake air and exhaust gas along an inner surface of the intake pipe in order to centrifugally separate foreign matters from the intake air and the exhaust gas. A foreign-matters-collecting chamber collects the centrifugally separated solid foreign matters therein. The separated solid foreign matters are discharged through a discharge opening and a discharge pipe. | 01-20-2011 |
20110030371 | SYSTEM USING SUPPLEMENTAL COMPRESSOR FOR EGR - A system for driving an EGR stream for an engine includes an exhaust gas turbine, a main compressor and a supplemental EGR compressor. The turbine drives the main compressor to pressurize intake air and drives the supplemental EGR compressor to pressurize an EGR exhaust gas stream to be introduced into the intake air system. A supplemental EGR compressor takes suction of exhaust gas downstream from the turbine. A three-way valve proportions exhaust gas between the engine exhaust gas discharge conduit and the suction of the supplemental EGR compressor. The turbine drives a shaft and the main compressor and the supplemental EGR compressor are driven by having corresponding compressor wheels fixed onto the common shaft. | 02-10-2011 |
20110030372 | EGR APPARATUS FOR INTERNAL COMBUSTION ENGINE - A mixing device of an EGR apparatus has a double pipe structure being composed of a first cylindrical member and a second cylindrical member, wherein the first and second cylindrical members are coaxially arranged with each other. Cyclone blades are provided between the first and second cylindrical members, so that EGR gas introduced from an inlet portion into an inside of the first cylindrical member flows along an cylindrical inner wall of the first cylindrical member. A swirl flow is generated in the EGR gas passing through the cyclone blades, so that the EGR gas spirally flows in a downstream side to remove foreign material, such as flocculated water from the EGR gas. | 02-10-2011 |
20110041495 | SYSTEMS AND METHODS FOR EXHAUST GAS RECIRCULATION - Exhaust gas recirculation systems and methods related to internal combustion engines are provided. In one embodiment, a system comprises an engine having at least a first cylinder group and a second cylinder group, with at least one cylinder in each cylinder group, an intake manifold having an inlet and a first outlet coupled to the first cylinder group and a second outlet coupled to the second cylinder group, an intake passage coupled to the intake manifold inlet, and first and second exhaust manifolds coupled to the first and second cylinder groups, respectively. An exhaust gas recirculation system is further coupled between the second exhaust manifold and the intake passage, and has a number of openings positioned within the intake passage, the number of openings equal to or greater than a number of cylinders having an intake event between successive exhaust events occurring in the second cylinder group. | 02-24-2011 |
20110048001 | EXHAUST GAS RECIRCULATION SYSTEM OF INTERNAL COMBUSTION ENGINE - An object of the present invention is to provide a technology of preventing, in an exhaust gas recirculation system having a low pressure EGR passage that recirculates a part of the exhaust gas from the exhaust passage at some point downstream of the exhaust gas purification apparatus to the intake passage, fragments of the exhaust gas purification apparatus from entering the intake system through the low pressure EGR passage in case that breakage of the exhaust gas purification apparatus occurs. The inventive system has a low pressure EGR valve provided in the low pressure EGR passage, an EGR control unit (S | 03-03-2011 |
20110048002 | TURBINE EXHAUST RECIRCULATION - An exhaust gas recirculation (EGR) system and a method for recirculating an exhaust gas stream from an outlet to an inlet of a turbomachine are provided. The EGR system includes a guide element to channel the exhaust gas stream from the inlet to the outlet and a Rankine cycle system through which a working fluid is circulated. The Rankine cycle system including serially a high temperature heat exchanger in heat exchange relationship with the guide element; an expansion device coupled to a generator; a low temperature heat exchanger in heat exchange relationship with a cooling medium; and a pump. The exhaust stream at the outlet has a first temperature and the exhaust stream downstream of the high temperature heat exchanger has a second temperature that is lower than the first temperature. | 03-03-2011 |
20110048003 | INTEGRATED EGR MIXER AND PORTED SHROUD HOUSING COMPRESSOR - An exemplary compressor housing includes a compressor volute; concentric walls that define an annular passage and a compressor wheel shroud disposed about a central axis where a compressor wheel positioned with respect to the shroud has an intended direction of rotation about the central axis; positioned with respect to the central axis, from a lower axial position to a higher axial position, a gas inlet to the annular passage, one or more ports extending between the shroud and the annular passage and a nozzle; and a gas volute to provide, to the gas inlet to the annular passage, gas having swirl in a direction opposite the intended direction of rotation of the compressor wheel. Various other exemplary devices, systems, methods, etc., are also disclosed. | 03-03-2011 |
20110048004 | Motor Vehicle Internal Combustion Engine EGR Loop - A motor vehicle internal combustion engine EGR loop, in which: | 03-03-2011 |
20110061380 | Motor Vehicle Internal Combustion Engine EGR Loop - An EGR loop of an internal combustion engine of a motor vehicle, comprising the engine ( | 03-17-2011 |
20110072814 | GREENHOUSE GAS CAPTURE SYSTEM AND METHOD - A system and method for capturing emissions including a first vent configured to capture a first combustible fluid and an inlet configured to filter a noncombustible, wherein the combustible fluid and the noncombustible fluid are combined to form a diluted stream. A first valve may be in fluid communication with the first vent and the inlet, and the first valve may be configured to receive and control flow of the diluted stream. An engine may be in fluid communication with the first valve and configured to receive and combust the diluted stream. | 03-31-2011 |
20110088393 | Turbocharger and Air Induction System Incorporating the Same and Method of Using the Same - A turbocharger having a turbine housing with an integral EGR conduit is disclosed. The turbine includes a turbine wheel attached to a turbine shaft and rotatably disposed in a turbine housing having a turbine volute conduit having a turbine inlet passage fluidly coupled to a turbine volute conduit having a turbine volute passage and a turbine volute inlet and an EGR conduit having an EGR passage, the EGR passage having an EGR conduit inlet, the EGR conduit inlet disposed on the turbine inlet conduit. The turbine inlet conduit is configured for fluid communication of a first portion of an exhaust gas flow received from an engine to the turbine wheel. The EGR conduit is configured for fluid communication of a second portion of the exhaust gas flow to an engine intake manifold. | 04-21-2011 |
20110094224 | METERING EXHAUST GAS RECIRCULATION SYSTEM FOR A TURBOCHARGED ENGINE HAVING A TURBOGENERATOR SYSTEM - An internal combustion engine having an engine block for internal combustion, a turbocharger for delivering pressurized intake air to the engine block, a turbogenerator for recovering heat energy from the exhaust gas downstream of the turbocharger to generate electricity, and an exhaust gas recirculation (EGR) system comprising an EGR-pump drawing exhaust gas from an EGR inlet located between the turbocharger and the turbogenerator, wherein the EGR-pump controllably delivers exhaust gas to an EGR mixer in the pressurized intake air stream at a location between the turbocharger and the engine block. An electronic control unit (ECU) is adapted to command the EGR-pump to deliver a desired EGR flow-rate to the engine block based on look-up tables and either open-loop and/or closed-loop control algorithms. | 04-28-2011 |
20110100001 | Exhaust Gas Recirculation Butterfly Valve - An exhaust gas recirculation system includes a butterfly valve in which the leak path through the valve is controlled by keeping the clearance between either a shaft of the valve and two bushings small or the clearance between the bushings and the counter bores in the valve element small, and making the other clearance larger. | 05-05-2011 |
20110113775 | VALVE ACTUATOR FOR TURBOCHARGER SYSTEMS - A turbocharger system for an engine is provided. The turbocharger system includes a low pressure turbocharger that has a low pressure compressor and a low pressure turbine and a high pressure turbocharger that has a high pressure compressor and a high pressure turbine. The turbocharger system further includes a bypass valve for controlling a gas stream hi the turbocharger system. The bypass valve includes an actuator operable to control the bypass valve, and the actuator is an electronic solenoid controlled hydraulic actuator with a position feedback sensor to detect the position of the bypass valve. | 05-19-2011 |
20110131979 | EGR COOLER CLEANING SYSTEM AND METHOD - A method for dislodging exhaust gas deposits from an exhaust gas recirculation (EGR) cooler ( | 06-09-2011 |
20110131980 | Dual-Inlet Supercharger for EGR Flow Control - A supercharger compressor includes a plurality of rotors rotatably mounted in a housing, a first inlet for air, a second inlet for recirculated exhaust gas, and a flow separator. The flow separator is arranged interior the housing and configured to form a slideable seal with at least one rotor of the plurality of rotors, the slideable seal fluidically isolating the first inlet from the second inlet, at least in part, and retarding pressure equalization therebetween. | 06-09-2011 |
20110131981 | INLET SYSTEM FOR AN EGR SYSTEM - An embodiment of the present invention takes the form of a system that may recirculate a portion of the exhaust of at least one turbomachine where it may be mixed with the inlet air and re-enter the turbomachine without affecting reliability and availability of the unit. | 06-09-2011 |
20110131982 | INLET SYSTEM FOR AN EGR SYSTEM - An embodiment of the present invention takes the form of a system that may recirculate a portion of the exhaust of at least one turbomachine where it may be mixed with the inlet air and re-enter the turbomachine without affecting reliability and availability of the unit. | 06-09-2011 |
20110146272 | DIESEL ENGINE FOR A MOTOR VEHICLE - A diesel engine is provided for a motor vehicle. The engine includes, but is not limited to a long route exhaust gas recirculating (LR-EGR) system, in which a Lean NO | 06-23-2011 |
20110154820 | ENGINE EXHAUST MANIFOLD PRESSURE CONTROL OF INTAKE FLOW - A method for controlling charge flow in an internal combustion engine includes operating an engine having a VGT. The method includes determining a target and current charge flow and EGR flow. The method further includes determining an error term for the charge flow and the EGR flow, and determining an exhaust pressure feedback command in response to the error terms. The exhaust pressure feedback command is combined with an exhaust pressure feedforward command, and the VGT is controlled in response to the exhaust pressure feedback command. The method additionally includes determining the exhaust pressure feedback command in response to a current EGR valve position. The method further includes controlling an EGR flow rate with the EGR valve at relatively closed EGR valve positions, and controlling the EGR flow rate with exhaust pressure at relatively open EGR valve positions. | 06-30-2011 |
20110162360 | EGR MIXER FOR HIGH-BOOST ENGINE SYSTEMS - An EGR mixer comprises an upstream conduit section having a contracting flow area in a direction of air flow through the mixer, a downstream conduit section having an expanding flow area in the direction of air flow through the mixer, a slot formed in the downstream conduit section for admitting exhaust to the air flow, and an abrupt flow-expanding ridge disposed between the upstream and downstream conduit sections. With the EGR mixer configured in this manner, recirculated exhaust may be effectively homogenized into an intake air flow with reduced drag. | 07-07-2011 |
20110173975 | Turbocharger - In one example, a turbocharger for an internal combustion engine is described. The turbocharger comprises a casing containing an impeller having a full blade coupled to a hub that rotates about an axis of rotation. The casing includes a bleed port and an injection port. The full blade includes a hub edge, a casing edge, and a first distribution of angles, each angle measured between the axis of rotation and a mean line at the hub edge at a meridional distance along the hub edge. The full blade includes a second distribution of angles, each angle measured between the axis of rotation and a mean line at the casing edge at a meridional distance along the casing edge. Further, various systems are described for affecting the aerodynamic properties of the compressor and turbine components in a way that may extend the operating range of the turbocharger. | 07-21-2011 |
20110203270 | INTERNAL COMBUSTION ENGINE SYSTEM AND PARTICULATE FILTER UNIT FOR SUCH AN INTERNAL COMBUSTION ENGINE SYSTEM - This internal combustion engine system includes an internal combustion engine, an intake line, an exhaust line, a turbocharger, and an EGR assembly for recirculating a part of the exhaust gases. The EGR assembly has an EGR assembly inlet to collect the part of the exhaust gases, an EGR assembly outlet to allow the part of the exhaust gases towards the compressor. A particulate filter unit is also provided. In the exhaust line, a converter unit decreases nitrogen oxides. The particulate filter unit includes a first particulate filter component, in the exhaust line downstream of converter unit, which defines a first flow path; a second particulate filter component, in the EGR assembly, which defines a second flow path. The first and second particulate filter component are thermally connected, and the first and the second flow paths are separate. | 08-25-2011 |
20110209473 | SYSTEM AND METHOD FOR WASTE HEAT RECOVERY IN EXHAUST GAS RECIRCULATION - A system and method for waste heat recovery in exhaust gas recirculation is disclosed. The system includes an engine having an intake manifold and an exhaust manifold, an exhaust conduit connected to the exhaust manifold, and a turbocharger having a turbine and a compressor, the turbine being connected to the exhaust conduit to receive a portion of the exhaust gas from the exhaust manifold. The system also includes an EGR system connected to the exhaust conduit to receive a portion of the exhaust gas, with the EGR system including an EGR conduit that is connected to the exhaust conduit to receive a portion of the exhaust gas, a heat exchanger connected to the EGR conduit and being configured to extract heat from the exhaust gas, and a waste heat recovery system connected to the heat exchanger and configured to capture the heat extracted by the heat exchanger. | 09-01-2011 |
20110214421 | COMPRESSOR OF AN EXHAUST-GAS TURBOCHARGER - The invention relates to a compressor ( | 09-08-2011 |
20110252794 | EXHAUST TREATMENT SYSTEM FOR INTERNAL COMBUSTION ENGINE - Systems and methods are provided for operating an engine exhaust system. In one example, a system comprises a first valve, and a second valve coupled to the first valve via a shaft. A first position of the shaft situates the first valve closed and the second valve open, a second position situates the second valve closed and the first valve open by a first amount, and a third position situates the second valve closed and the first valve open by a second, larger amount. | 10-20-2011 |
20110265473 | EXHAUST GAS RECIRCULATION SYSTEM - An exhaust gas recirculation (EGR) system for a vehicle is provided. The EGR system includes a turbine fluidly coupled downstream of an exhaust manifold and an EGR conduit including a first port coupled to an exhaust passage directly downstream of the turbine, an axis of the first port arrange at a non-perpendicular angle with respect to the rotation axis of the turbine and a second port coupled to an intake system. | 11-03-2011 |
20110283699 | EXHAUST GAS RECIRCULATION (EGR) SYSTEM - Various systems and methods are described for an exhaust gas recirculation (EGR) system coupled to an engine in a vehicle. One example method comprises, calculating an EGR mass flow from a difference between measurements of clean air mass flow and total mass flow, and correcting for a transient mass flow error. | 11-24-2011 |
20110289916 | EGR constructions for opposed-piston engines - A two-stroke, opposed-piston engine with one or more ported cylinders and uniflow scavenging includes an exhaust gas recirculation (EGR) construction that provides a portion of the exhaust gasses produced by the engine for mixture with charge air to control the production of NOx during combustion. | 12-01-2011 |
20110289917 | INTERNAL COMBUSTION ENGINE EXHAUST PURIFYING DEVICE AND EXHAUST PURIFYING METHOD - An exhaust purifying device for an internal combustion engine is provided that can regenerate an exhaust purifying filter at high efficiency without deteriorating the fuel economy. An exhaust purifying device of an engine ( | 12-01-2011 |
20110289918 | INTERNAL COMBUSTION ENGINE EXHAUST EMISSION CONTROL DEVICE AND EXHAUST EMISSION CONTROL METHOD - An exhaust emission control device for an internal combustion engine is provided that can suppress the adherence of HC to an EGR path and the like accompanying enrichment of the exhaust air/fuel ratio. The exhaust emission control device includes: a high-pressure EGR path | 12-01-2011 |
20110296832 | AVOIDANCE OF COOLANT OVERHEATING IN EXHAUST-TO-COOLANT HEAT EXCHANGERS - A method for operating an engine system comprises charging a cylinder of the engine system with exhaust from upstream of an exhaust turbine at a first rate. The method further comprises charging the cylinder with exhaust from downstream of the turbine at a second rate. The exhaust from downstream of the turbine is routed to the cylinder via a low-pressure exhaust-gas recirculation path. The method further comprises increasing the second rate relative to the first rate in response to a coolant-overheating condition. | 12-08-2011 |
20110296833 | METHOD AND ARRANGEMENT FOR REDUCING AN NOX CONTENT IN THE EXHAUST GAS OF AN INTERNAL COMBUSTION ENGINE IN A VEHICLE - A method and an arrangement are provided for reducing a NOx-content in the exhaust gas of an internal combustion engine in a vehicle. The combustion engine includes at least one cylinder, an intake for the supply of air, an exhaust outlet for discharging exhaust gases into an exhaust after treatment system for reducing emissions of the internal combustion engine. An exhaust gas recirculation supplies exhaust gas from the exhaust outlet to the intake of the internal combustion engine, and at least two energy absorbers are provided in series in the exhaust flow downstream of the exhaust outlet and absorb energy of the exhaust gas. The exhaust gas is overheated to a first temperature by driving the combustion engine in a range of rotational speed producing hot exhaust gas at the exhaust outlet. The first temperature is sufficient to drive the at least two energy absorbers. A temperature of the exhaust gas is established downstream of the at least two energy absorbers sufficient to remove NOx from the exhaust gas in the exhaust after treatment system with an efficiency of more than 80%. | 12-08-2011 |
20110302918 | Motor vehicle and method for operating a combustion engine - The invention relates to a motor vehicle with a combustion engine ( | 12-15-2011 |
20110302919 | TURBOCHARGED ENGINE WITH EXHAUST GAS RECYCLING - The present disclosure refers to a turbocharged internal combustion engine with exhaust gas recycling, comprising an intake manifold, an exhaust manifold, a fresh air turbocharger and an exhaust supercharger, wherein the intake manifold is divided by a separating wall into a fresh air passage and an exhaust passage, one of the passages being connected to inlet openings of cylinders of the engine, the fresh air passage being connected to the outlet of the compressor of the fresh air turbocharger, the exhaust passage being connected to the outlet of the compressor of the exhaust supercharger and the separating wall being formed with orifices connecting the two passages. | 12-15-2011 |
20120000197 | AUTOMOBILE-MOUNT DIESEL ENGINE WITH TURBOCHARGER AND METHOD OF CONTROLLING THE DIESEL ENGINE - An automobile-mount diesel engine with a turbocharger is provided, which includes an engine body with the turbocharger, the engine body being mounted in the automobile and supplied with fuel containing diesel fuel as its main component, a fuel injection valve arranged in the engine body so as to be oriented toward a cylinder of the engine body and for directly injecting the fuel into the cylinder, an injection control module for controlling a mode of injecting the fuel into the cylinder through the fuel injection valve, and an EGR amount control module for adjusting an amount of EGR gas introduced into the cylinder. EGR and fuel injection are adjusted based on speed-load conditions of the engine. | 01-05-2012 |
20120017588 | Engine - An engine includes a variable geometry turbocharger, an EGR valve device, a hydraulic servo drive device that drives the variable geometry turbocharger, a hydraulic servo drive device that drives the EGR valve device, an electronic proportional control valve (EPC valve) that supplies pilot pressure oil to the hydraulic servo drive device, and an electronic proportional control valve (EPC valve) that supplies pilot pressure oil to the hydraulic servo drive device, the EPC valves being attached to the EGR valve device. | 01-26-2012 |
20120023933 | METHOD AND SYSTEM FOR A TURBOCHARGED ENGINE - Methods and systems are provided for a boosted engine having a split intake system coupled to a split exhaust system. Aircharges of differing composition, pressure, and temperature may be delivered to the engine through the split intake system at different points of an engine cycle. In this way, boost and EGR benefits may be extended. | 02-02-2012 |
20120023934 | METHOD AND SYSTEM FOR A TURBOCHARGED ENGINE - Methods and systems are provided for a boosted engine having a split intake system coupled to a split exhaust system. Aircharges of differing composition, pressure, and temperature may be delivered to the engine through the split intake system at different points of an engine cycle. In this way, boost and EGR benefits may be extended. | 02-02-2012 |
20120023935 | METHOD AND SYSTEM FOR A TURBOCHARGED ENGINE - Methods and systems are provided for a boosted engine having a split intake system coupled to a split exhaust system. Aircharges of differing composition, pressure, and temperature may be delivered to the engine through the split intake system at different points of an engine cycle. In this way, boost and EGR benefits may be extended. | 02-02-2012 |
20120023936 | NOZZLED TURBOCHARGER TURBINE - A turbine includes a turbine housing ( | 02-02-2012 |
20120023937 | FIXED RATE EGR SYSTEM - A method is provided for controlling EGR flow in turbocharged engine. The method comprises operating a low-pressure exhaust gas recirculation (LP-EGR) system at a fixed EGR percentage rate of fresh airflow from mid-load down to a minimum engine load, even as load changes. In this way, errors in the delivered LP-EGR rate during transient conditions may be alleviated by providing a fixed EGR percentage of fresh airflow at all engine loads within a fixed mode range. | 02-02-2012 |
20120036848 | HIGH-PRESSURE EXHAUST-GAS RECIRCULATION SYSTEM WITH HEAT RECOVERY - A method for operation of a high pressure exhaust-gas recirculation (EGR) system is provided. The method includes transferring heat from an exhaust flow through an EGR cooler to an engine coolant, the EGR cooler coupled to an EGR line fluidly coupled in parallel with a turbine and directing a controlled portion of the exhaust flow from the EGR cooler to an engine intake. The method further includes directing another controlled portion of the exhaust flow from the EGR cooler to the surrounding atmosphere. | 02-16-2012 |
20120042648 | CONFIGURATION HAVING A PROTECTED TURBOCHARGER IN AN EXHAUST GAS RECIRCULATION LINE AND MOTOR VEHICLE HAVING THE CONFIGURATION - A configuration for treating exhaust gases of an internal combustion engine having a predetermined displacement volume, includes an exhaust gas recirculation line. Exhaust gas flowing through the exhaust gas recirculation line interacts with a turbocharger. A screening layer is provided in the exhaust gas recirculation line upstream of the turobcharger. The screening layer is larger than an average cross section of the exhaust gas recirculation line. A motor vehicle having at least one such configuration is also provided. | 02-23-2012 |
20120055156 | EXHAUST GAS RECIRCULATION SYSTEM FOR A COMBUSTION ENGINE - An exhaust gas recirculation system for an internal combustion engine includes an exhaust gas duct, a suction duct, and an exhaust gas recirculation duct which branches off from the exhaust gas duct and which flows into the suction duct. An exhaust gas mass flow sensor is arranged downstream of a flow stabilization element in the exhaust gas recirculation duct. | 03-08-2012 |
20120060497 | KNOCK-RESPONSIVE ADJUSTMENT OF AN EXTERNAL EGR MIXTURE - A method of adjusting an external exhaust gas recirculation mixture in response to engine knock of a spark-ignition turbocharged engine, and related products. | 03-15-2012 |
20120060498 | Warming Intake Air Using EGR Cooler in Dual-Throttle Boosted Engine System - A method for providing intake air to an engine in a vehicle comprises delivering compressed fresh air and EGR to the engine via first and second throttle valves coupled to an intake manifold of the engine. During a higher engine-load condition, an EGR exhaust flow is cooled in a heat exchanger and the cooled EGR exhaust flow is admitting to the intake manifold. During a lower engine-load condition, fresh air is warmed in the heat exchanger, and the warmed fresh air is admitted to the intake manifold. | 03-15-2012 |
20120060499 | Internal combustion engine with an exhaust-gas recirculation and method for operating an internal combustion engine - An internal combustion engine has a high-pressure exhaust-gas recirculation line and a low-pressure exhaust-gas recirculation line with a low-pressure exhaust-gas recirculation valve. The low-pressure exhaust-gas recirculation line branches off from the exhaust-gas system downstream of a turbine of an exhaust-gas turbocharger and opens into a fresh-air system upstream of a compressor of the exhaust-gas turbocharger. An exhaust-gas flap is disposed in the exhaust-gas system downstream from where the low-pressure exhaust-gas recirculation line branches off from the exhaust-gas system. At least one pressure sensor is disposed in the low-pressure exhaust-gas recirculation line and configured such that the at least one pressure sensor determines a pressure difference in the low-pressure exhaust-gas recirculation line between a point upstream of the low-pressure exhaust-gas recirculation valve and a point downstream of the low-pressure exhaust-gas recirculation valve. A method for operating an internal combustion engine is also provided. | 03-15-2012 |
20120073288 | METHOD AND SYSTEM FOR TURBOCHARGING AN ENGINE - A method for improving operation of a turbocharged engine is presented. In one embodiment, the method may reduce engine emissions and improve engine efficiency during an engine start. | 03-29-2012 |
20120096855 | SYSTEM FOR DETERMINING EGR DEGRADATION - A system for improving operation of an EGR system is presented. The system provides distinct models to estimate EGR temperature in response to a valve position. In one example, the system can judge EGR system operation when a state of a control valve is adjusted during driving conditions. | 04-26-2012 |
20120111000 | CONTROL APPARATUS OF AN INTERNAL COMBUSTION ENGINE - The problem to be solved by the present invention is to provide a control apparatus of an internal combustion engine that can surely judge that an abnormality has occurred when a problem in drivability arises. The present invention is characterized by comprising: an outside EGR apparatus, including an exhaust gas recirculation passage that connects an exhaust passage and an intake passage of the internal combustion engine, and an EGR valve that can increase and decrease an outside EGR flow quantity that flows back into said intake passage from said exhaust passage through said exhaust gas recirculation passage by being adjusted in its opening angle; output value acquiring means that acquire an output value of the engine; and EGR abnormality judgment means that judge occurrence of abnormality in said outside EGR apparatus according to a predetermined criterion based on a difference between an output of the engine in which a first EGR flow quantity is flown back and an output of the engine in which a second EGR flow quantity is flown back. | 05-10-2012 |
20120111001 | ENGINE ARRANGEMENT WITH AN IMPROVED EXHAUST HEAT RECOVERY ARRANGEMENT - An engine arrangement of the type including an internal combustion engine having an EGR line, wherein at least one turbine is located on an exhaust line, is provided. The arrangement includes a water vapor generating arrangement using exhaust gases energy to transform liquid water into water vapor. The water vapor is injected in the exhaust line upstream of the turbine. The EGR line is branched off the exhaust line upstream of the turbine and the water vapor generating arrangement includes at least one EGR/water heat exchanger for exchanging heat between the EGR line and the water to be vaporized. | 05-10-2012 |
20120117963 | Methods and Systems for Emission System Control - Methods and systems are provided for operating a turbocharged engine including a particulate filter positioned upstream of a turbocharger turbine, a catalyst positioned downstream of the turbine, and an EGR passage coupled between an engine exhaust and engine intake. In one example, the method comprises, diverting exhaust gas from downstream of the filter to the engine intake via the EGR passage, and adjusting an amount of diverted exhaust gas based on filter operating conditions. | 05-17-2012 |
20120124996 | Dual-Inlet Supercharger for EGR Flow Control - A supercharger compressor includes a plurality of rotors rotatably mounted in a housing, a first inlet for air, a second inlet for recirculated exhaust gas, and a flow separator. The flow separator is arranged interior the housing and configured to form a slideable seal with at least one rotor of the plurality of rotors, the slideable seal fluidically isolating the first inlet from the second inlet, at least in part, and retarding pressure equalization therebetween. | 05-24-2012 |
20120137679 | INTERNAL COMBUSTION ENGINE EGR APPARATUS - An EGR apparatus for an IC engine including an EGR duct connecting the exhaust duct of the engine at a point downstream of an aftertreatment device to the intake duct at a point upstream of the supercharging compressor, an EGR cooler and an EGR positive displacement compressor along the EGR duct. The EGR compressor is driven by an electric motor which is controlled by a model-based control module in response to an EGR flow rate request depending on operating parameters of IC engine. | 06-07-2012 |
20120137680 | TURBOCHARGER PROTECTING METHOD OF ENGINE PROVIDED WITH LP-EGR - A turbocharger protecting method of an engine provided with an LP-EGR including an engine, a turbocharger disposed downstream of the engine, an exhaust gas post processing device disposed downstream of the turbocharger, an LP-EGR (low pressure exhaust gas recirculation) valve disposed downstream of the exhaust gas post processing device, an LP-EGR cooler disposed downstream of the LP-EGR valve, and an air supply line connecting downstream of the LP-EGR cooler and a compressor of the turbocharger, the turbocharger protecting method includes predetermining compressor inlet limiting temperature, estimating compressor inlet temperature and comparing the estimated compressor inlet temperature and the predetermined compressor inlet limiting temperature, and lowering the compressor inlet temperature if the estimated compressor inlet temperature excesses the predetermined compressor inlet limiting temperature. | 06-07-2012 |
20120159949 | BOOSTING DEVICES WITH INTEGRAL FEATURES FOR RECIRCULATING EXHAUST GAS - According to one embodiment of the invention, a compressor housing includes a compressor inlet in fluid communication with a compressor volute configured to house a compressor wheel, the compressor inlet configured to provide a first air flow to the compressor wheel and a compressor outlet in fluid communication with the compressor volute, the compressor outlet configured to direct a compressed gas to an intake manifold. The compressor housing further includes an exhaust gas recirculation inlet port in fluid communication with the compressor volute, the exhaust gas recirculation inlet port being configured to combine an exhaust gas flow with the air flow to the compressor wheel. | 06-28-2012 |
20120159950 | BOOSTING DEVICES WITH INTEGRAL FEATURES FOR RECIRCULATING EXHAUST GAS - According to one embodiment of the invention, a turbine housing includes a turbine inlet in fluid communication with a turbine volute configured to house a turbine wheel, the turbine inlet configured to direct an exhaust gas flow from an engine to the turbine wheel. The turbine housing also includes a turbine outlet in fluid communication with the turbine volute, the turbine outlet configured to direct the exhaust gas flow to an exhaust gas conduit and a first exhaust gas recirculation supply port located on and in fluid communication with the turbine outlet, the first exhaust gas recirculation supply port being configured to direct a portion of the exhaust gas flow to an exhaust gas recirculation supply conduit. | 06-28-2012 |
20120180477 | THERMAL MANAGEMENT SYSTEMS AND METHODS - Thermal management systems and methods related to controlling temperature of internal combustion engines are provided. In one embodiment, a thermal management system includes an air intake structure defining an air intake passage therethrough coupled to a plurality of cylinders in an engine, a first turbocharger including a first compressor positioned in the air intake passage, a second turbocharger including a second compressor positioned in the air intake passage between the first compressor and the plurality of cylinders, a multi-stage cooling assembly, positioned in the air intake passage between the first compressor and the second compressor, including an air-to-coolant intercooler for cooling intake air and an air-to-air heat exchanger for cooling intake air, and an air-to-coolant radiator fluidly coupled with the air-to-coolant intercooler of the multi-stage cooling assembly. | 07-19-2012 |
20120180478 | EXHAUST GAS RECIRCULATION SYSTEM FOR AN INTERNAL COMBUSTION ENGINE - An internal combustion engine comprises an intake system to deliver a compressed intake charge thereto. A venturi assembly is disposed in the intake system and defines a venturi defining a low pressure zone “Z” for the intake charge passing therethrough. An annular exhaust gas recirculation conduit distribution passage extends circumferentially about an inlet annulus of an intake manifold and receives diverted exhaust gas from an exhaust system for delivery to the intake charge through exhaust gas recirculation diffuser passages disposed at circumferentially spaced locations about the annular exhaust gas recirculation conduit distribution passage. | 07-19-2012 |
20120180479 | INTERNAL COMBUSTION ENGINE - In an internal combustion engine and a method of operation the internal combustion engine which includes a high pressure and a low pressure turbocharger having exhaust gas turbines arranged in series in an engine exhaust line provided with a high pressure exhaust gas recirculation line and a low pressure exhaust gas recirculation line via which exhaust gas can be conducted to an inlet line of the engine, the arrangement is switchable depending on the engine speed between an exhaust gas recirculation by way of the high pressure line and an exhaust gas recirculation by way of both, the high pressure and the low pressure line, to achieve low emissions and low fuel consumption. | 07-19-2012 |
20120204558 | INTERNAL COMBUSTION ENGINE - An internal combustion engine having an exhaust gas recirculation device for recirculating exhaust gas of the internal combustion engine to a fresh-air side of the internal combustion engine. For this purpose, it is provided that the exhaust gas recirculation device has at least one compressor for compressing the exhaust gas supplied to the fresh-air side of the internal combustion engine. | 08-16-2012 |
20120204559 | SUPERCHARGING SYSTEM FOR INTERNAL COMBUSTION ENGINE - A supercharging system comprising a pressure wave supercharger which supercharges an internal combustion engine by increasing a pressure of gas in a cell using a pressure wave of exhaust gas and discharging from an intake gas outlet port to an intake gas passage the gas pressurized further comprises a first motor which rotates a rotor, and a valve plate and a second motor capable of changing a position of the intake gas outlet port with respect to an exhaust gas inlet port. The motors are controlled so as to change a rotation number of the rotor and the position of the intake gas outlet port with respect to the exhaust gas inlet port based on a quantity of flow of exhaust gas to be recirculated to the intake gas passage. | 08-16-2012 |
20120216530 | SYSTEMS AND METHODS FOR EXHAUST GAS RECIRCULATION - An engine system includes a first cylinder group, a second cylinder group, an inlet manifold coupled to the first cylinder group and the second cylinder group, an inlet passage coupled to the inlet manifold to provide inlet air to the inlet manifold, a first exhaust manifold coupled to the first cylinder group, a second exhaust manifold coupled to the second cylinder group, and a mixer pipe positioned within the second exhaust manifold and/or the intake passage to mix exhaust gas recirculation (EGR) gases exhausted by the second cylinder group that are delivered through the second exhaust manifold with inlet air. The mixer pipe forms an inlet end that is coupled to the second exhaust manifold and an outlet end that is located upstream of the cylinders in the first cylinder group and the cylinders in the second cylinder group. | 08-30-2012 |
20120227399 | IN-FLOW AIR INJECTION HOUSING - An in-flow air injection housing configured to create suction for pulling a combustion gas through an EGR system. The housing includes an orifice that is configured to receive an inner ring. The inner ring includes an outer groove and a plurality of air jets. The housing further includes a supplemental gas inlet, a supply inlet, and a supply outlet. The supply inlet is configured to receive a supplemental gas that flows through the supplemental gas inlet. The supply outlet is positioned to deliver the supplemental gas received by the supply inlet to the outer groove. The supplemental gas may flow from the outer grove through annular air jets positioned along a side of the inner ring. The flow of supplemental gas through the air jets and into combustion gas(es) may provide momentum and/or friction that draws additional combustion gas through the housing. | 09-13-2012 |
20120247101 | Method and System for Providing Air to an Engine - Systems and methods for supplying air to an engine are disclosed. In one example, an air inlet throttle is at least partially closed in response to a change in engine torque request. In another example, the air inlet throttle is adjusted in conjunction with adjusting an engine throttle. The approach can reduce compressor noise and may reduce the possibility of compressor surge. | 10-04-2012 |
20120255298 | INTERNAL COMBUSTION ENGINE COMPRISING AN EXHAUST GAS RECIRCULATION SYSTEM - An internal combustion engine includes a plurality of cylinders, an air intake line and an exhaust line collecting exhaust gas. The engine also includes an EGR line for rerouting a part of the exhaust gas from the exhaust line towards the air intake line and at least a first turbocharger comprising a first turbine driven by the exhaust gas flowing towards the atmosphere, linked to a first compressor located on the air intake line. The engine further includes a variable geometry EGR turbine located on the EGR line, driven by the EGR gas flowing in the EGR line. Thus, thanks to the pressure reduction occurring in the turbine, the EGR gas temperature is lowered, and less cooling power from the engine cooling system is required to cool down the EGR. | 10-11-2012 |
20120255299 | V ENGINE - The invention relates to a V engine ( | 10-11-2012 |
20120260653 | Internal combustion engine with improved exhaust manifold - An internal combustion engine includes a plurality of combustion cylinders, at least one turbocharger, an air supply line, an exhaust gas line and an exhaust gas recirculation system. An exhaust manifold of the exhaust gas line may have both non-direction specific and modular pulse exhaust manifold elements. If the internal combustion engine has dual cylinder banks, an exhaust gas balance tube may extend between exhaust gas lines of the cylinder banks and be fluidly connected to an exhaust manifold between the ends thereof. | 10-18-2012 |
20120266594 | INTERNAL COMBUSTION ENGINE - The present invention relates to an internal combustion engine ( | 10-25-2012 |
20120272646 | LOW PRESSURE EXHAUST GAS RECIRCULATION APPARATUS - When a failure occurs in synchronizing mechanism, an intake air throttle valve is rotated in a direction that is opposite from a normal operational time valve closing direction, so that an arm of a driven plate contacts a throttle valve side stopper to stop rotation of the intake air throttle valve. Thereafter, when a low pressure EGR valve is rotated from a full close position to a full open position, an EGR valve side stopper contacts the arm of the driven plate to stop the low pressure EGR valve. A rotational angle of the EGR valve is sensed with a sensor and is outputted to an ECU. The ECU determines that a failure mode is set when a valve angle sensed with the sensor coincides with a rotation stop position of the EGR valve. | 11-01-2012 |
20120285165 | ENGINE SYSTEM BASED ON TURBO CHARGER AND FUEL RATIO IMPROVING METHOD THEREOF - An engine system may include an electric or mechanical supercharger and an LP-EGR, basically with a turbocharger, an EGR valve, a channel control valve, and a bypass valve, which control the flow rate of external air and exhaust gas, may be integrally operated, and a operation section may be divided into a turbo-lag and low torque section, a mid-load section, and mid/high-load section such that the open amount of EGR valve, channel control valve, and bypass valve may be optimally controlled, such that it may be possible to improve availability for a low-speed/high-load section with turbo-lag reduced, using supercharger and considerably increase the ratio of fuel efficiency improvement in the low-speed/high-load section, using LP-EGR operating with supercharger. | 11-15-2012 |
20120297766 | GEAR SUBASSEMBLY AND EXHAUST GAS RECIRCULATION SYSTEM - A gear subassembly is for an exhaust gas recirculation (EGR) system including an EGR valve and a rotatable shaft provided for the EGR valve. The gear subassembly includes a gear and a cam. The gear is a part of reduction gears and is fastened to the rotatable shaft to rotate therearound. The cam is fastened to the gear and is a part of a link mechanism. The gear includes a metal shaft-fastening part used for fastening the gear to the rotatable shaft, and a metal cam-fastening part used for fastening the gear to the cam. The gear is formed by resin-molding with the shaft-fastening part and the cam-fastening part serving as insert parts. | 11-29-2012 |
20120297767 | System and Method to Control an Electronically-Controlled Turbocharger - By providing an electrically-controlled turbocharger (ECT) on a compression-ignition (CI) engine, the engine can be provided a desired lambda and a desired EGR fraction over the range of operating conditions. When lambda in the exhaust is leaner than the desired lambda, electrical energy to the electric motor of the ECT is reduced to bring actual lambda to desired lambda. Analogously, when lambda in the exhaust is richer than the desired lambda, electrical energy to the ECT is increased. | 11-29-2012 |
20120297768 | TURBOCHARGER - The present invention relates to a turbocharger ( | 11-29-2012 |
20120304640 | EXHAUST GAS RECIRCULATION SYSTEM FOR AN INTERNAL COMBUSTION ENGINE - An exhaust gas recirculation device for an internal combustion engine having a supercharger has an intake air passage that intakes intake air for the internal combustion engine, an exhaust passage that carries away exhaust air from the internal combustion engine, an exhaust gas recirculation passage connected to the intake air passage, and an exhaust gas recirculation valve interposed within the exhaust gas recirculation passage. The exhaust gas recirculation passage recirculates a part of the exhaust gas based on an openness of the exhaust gas recirculation valve to control an amount of exhaust recirculation introduced into the intake air passage. A first end of the exhaust gas recirculation passage is connected to the intake air passage upstream of a compressor of the supercharger. A second end of the exhaust gas recirculation passage is connected to the exhaust passage downstream of a turbine of the supercharger. | 12-06-2012 |
20120304641 | CONTROL APPARATUS FOR INTERNAL COMBUSTION ENGINE EQUIPPED WITH TURBOCHARGER - A control apparatus for an internal combustion engine includes a turbocharger; an exhaust gas purifying catalyst which is arranged at a section downstream of a turbine in the exhaust passage; and a low pressure EGR passage which connects a section downstream of the exhaust gas purifying device in the exhaust passage and a section upstream of a compressor in the intake passage. The compressor is provided with a movable vane mechanism capable of varying throttled quantity of a flow passage of intake gas by moving diffuser vanes. The movable vane mechanism is controlled so that the throttled quantity of the flow passage is decreased when the exhaust gas is led to the compressor via the low pressure EGR passage as compared with a case when the exhaust gas is not led to the compressor. | 12-06-2012 |
20120312012 | MULTISTAGE CHARGING SYSTEM FOR AN INTERNAL COMBUSTION ENGINE - In a multi-stage charging group for receiving an operating fluid of an internal combustion engine which includes a first and a second turbocharger with a first and, respectively, a second turbine arranged in a common support housing, a bypass guide structure is provided in the support housing for guiding the operating fluid around the first turbine, which guide structure is formed at least partially by the support housing and a housing section of the first turbine. | 12-13-2012 |
20120312013 | SYSTEM, METHOD, AND DEVICE FOR LOCOMOTIVE EXHAUST GAS RECIRCULATION COOLING AND CATALYST HEATING - A method of heating an engine exhaust gas of an engine, including flowing a first exhaust gas at a first temperature within and along internal flow channels of a catalyst brick, and flowing a second exhaust gas at a second, different, temperature around an exterior of the catalyst brick. Heat may be transferred between the gases and the catalyst brick to achieve various operations. | 12-13-2012 |
20120317978 | Valve stop for engine with exhaust gas recirculation - A butterfly valve includes a body with a bore through which exhaust gas may flow and a valve member rotatably mounted within the bore for restricting flow through the bore. A stop extends into the bore to limit movement of the valve member and prevent the valve member from rotating to a closed position. The stop defines a restricted flow position at which the valve member is positioned between an open position and the closed position. An internal combustion engine utilizing the butterfly valve is also provided. | 12-20-2012 |
20130000300 | Nozzled turbocharger turbine and associated engine and method - A turbocharger for an internal combustion engine includes a center housing, a shaft rotatably supported in the center housing, and a turbine wheel connected at one end of the shaft. A turbine housing is connected to the center housing and disposed around the turbine wheel. A bore formed in the turbine housing extends from a gas outlet end of the turbine housing to an annular stop surface of the turbine housing disposed adjacent the turbine wheel. A nozzle ring disposed in the bore surrounds a portion of the turbine wheel. An outlet cone is disposed at least partially in the bore and surrounds a remaining portion of the turbine wheel. The outlet cone is connected to the gas outlet end of the turbine housing. | 01-03-2013 |
20130019594 | METHOD AND SYSTEM FOR EXHAUST GAS RECIRCULATION - Methods and systems are provided for an engine including a first turbocharger having a first compressor and a second turbocharger having a second compressor. An EGR differential between the first compressor and the second compressor may be increased under a condensation condition, and decreased under a surge condition. The EGR differential may also be decreased when a compressor outlet temperature exceeds an outlet temperature threshold. | 01-24-2013 |
20130025276 | METHOD AND DEVICE FOR PRODUCING A CARBON DIOXIDE-RICH GAS MIXTURE, METHOD AND DEVICE FOR IMPROVED OIL RECOVERY AND CORRESPONDING USE OF A GAS ENGINE - The invention relates to a method for producing a carbon dioxide-rich gas mixture ( | 01-31-2013 |
20130042610 | EGR Performance Balancing Restrictor For An Engine System - An engine system includes an exhaust gas recirculation conduit having an inlet in fluid communication with an exhaust conduit and an outlet in fluid communication with an intake air conduit. An exhaust gas recirculation performance balancing restrictor has an uninstalled position wherein the exhaust conduit defines a first backpressure at the inlet of the exhaust gas recirculation conduit. The exhaust gas recirculation performance balancing restrictor also has an installed position in which the exhaust gas recirculation performance balancing restrictor is removably disposed within the exhaust conduit downstream from the inlet of the exhaust gas recirculation conduit. In the installed position, the exhaust gas recirculation performance balancing restrictor provides a fixed flow restriction through the exhaust conduit to generate a second backpressure at the inlet of the exhaust gas recirculation conduit that is greater than the first backpressure. | 02-21-2013 |
20130042611 | COMBUSTION CONTROL APPARATUS FOR AN INTERNAL COMBUSTION ENGINE - An object of this invention is to provide a technology wherein a stratification of an EGR gas with an air-fuel mixture or a fresh air is achieved and capable of introducing the EGR gas in a large quantity, even when an engine load is high as an operation state of an internal combustion engine. With this invention, when a stratified combustion is performed by introducing the EGR gas, the fresh air is supercharged by a compressor, a fresh air blocking valve is closed to block inflow of the fresh air into a first intake port, and a variable valve mechanism opens a first intake valve before opening of a second intake valve, and, thereafter, opens the second intake valve. | 02-21-2013 |
20130074494 | SYSTEM AND METHOD FOR ESTIMATING ENGINE EXHAUST MANIFOLD OPERATING PARAMETERS - A system and method are provided for estimating an operating parameter of an exhaust manifold of an engine. In the system, a flow value is determined that corresponds to a flow rate of exhaust gas through an EGR conduit fluidly coupled between the exhaust manifold and the intake manifold. The EGR conduit includes an exhaust gas cooler disposed in-line with the EGR conduit and a property of the exhaust gas exiting an exhaust gas outlet of the cooler is measured. The operating parameter of the exhaust manifold is estimated as a function of at least the flow value and the property of the exhaust gas exiting the exhaust gas outlet of the cooler. Illustratively, the operating parameter of the exhaust manifold may be exhaust manifold pressure and/or temperature. | 03-28-2013 |
20130074495 | SYSTEM FOR CONTROLLING AN AIR HANDLING SYSTEM INCLUDING AN ELECTRIC MOTOR-ASSISTED VARIABLE GEOMETRY TURBOCHARGER - A system and method are provided for controlling an air handling system for an internal combustion engine including a turbocharger having a variable geometry turbine fluidly coupled to an exhaust manifold of the engine and a compressor fluidly coupled to an intake manifold of the engine, and an electric motor coupled to a rotatable shaft connected between the compressor and the variable geometry turbine. A target torque required to drive the compressor to achieve target compressor operating parameters is determined, a maximum available torque that can be supplied by the variable geometry turbine in response to a target exhaust gas flow through the variable geometry turbine is determined, and the electric motor is enabled to supply supplemental torque to the rotatable shaft if the target torque is greater than the maximum available torque. | 03-28-2013 |
20130074496 | SYSTEM FOR CONTROLLING AN AIR HANDLING SYSTEM INCLUDING AN ELECTRIC PUMP-ASSISTED TURBOCHARGER COMPRESSOR - A system and method are provided for controlling an air handling system for an internal combustion engine including a turbocharger having a variable geometry turbine and a compressor having a fresh air inlet fluidly coupled to ambient and to an air outlet of an electric air pump. An air pump enable value as determined a function of target engine speed and total fuel target values and an air flow target is determined as a function of a target fresh air flow value. Operation of the electric air pump is activated to supply supplemental air flow to the fresh air inlet of the compressor if the air pump enable value is greater than a threshold air pump enable value and the air flow target does not exceed a maximum flow value. | 03-28-2013 |
20130081392 | EXHAUST GAS RECIRCULATION IN A RECIPROCATING ENGINE - A method of operating a reciprocating engine comprises recirculating exhaust gas from a first cylinder of the engine to an intake stream or air-fuel mixture of a second cylinder of the engine such that a boost pressure of the first cylinder is greater than a boost pressure of the second cylinder. An engine retrofit system and two-cycle engine employing aspects of the method are also disclosed. The present invention has been described in terms of specific embodiment(s), and it is recognized that equivalents, alternatives, and modifications, aside from those expressly stated, are possible and within the scope of the appending claims. | 04-04-2013 |
20130104542 | EXHAUST GAS RECIRCULATION IN A RECIPROCATING ENGINE HAVING A MULTIPLE-STROKE CONFIGURATION | 05-02-2013 |
20130104543 | SUPER-CRITICALLY FUELED DIRECT-INJECTION COMPRESSION IGNITION SYSTEM USING EXHAUST GAS RECIRCULATION | 05-02-2013 |
20130104544 | INTERNAL COMBUSTION ENGINE AND ASSOCIATED OPERATING METHOD | 05-02-2013 |
20130118166 | COMPRESSOR FLOW CONTROL - An engine system is provided. The system comprises an engine, first and second compressors supplying air to the engine, a first compressor recirculation valve adjustable to two restriction levels, and a second compressor recirculation valve adjustable to three or more restriction levels. In this way, the first and second compressor recirculation valves may be controlled to avoid compressor surge while providing a sufficient amount of boost to meet power demands. | 05-16-2013 |
20130152582 | COMPRESSOR RECIRCULATION INTO ANNULAR VOLUME - To solve the problems of compressor wheel blade flow separation causing surge type noises when a compressor return or recirculation valve is opened or closed, bypass airflow from a compressor recirculation valve is fed into an annular volume, defined between inner and outer walls or shaped as a radially expanded, axially flattened cylindrical space in the compressor inlet, so that the generally unidirectional radial flow from the compressor recirculation valve is re-directed and organized as it is turned from generally radial to generally axial, merging with the general inlet flow and presenting the compressor wheel with airflow of “circumferentially uniform” flow velocity. | 06-20-2013 |
20130174546 | Controlling Fresh Air and Exhaust Gas Flow in Turbocharged Internal Combustion Engine - An internal combustion engine has a cylinder and an exhaust-gas turbocharger comprising a compressor arranged in an intake system and a turbine arranged in an exhaust-gas discharge system. Various lines are provided for conducting gases including 1) a bypass line branching off from the inlet system downstream of the compressor so as to form an inlet-side junction, and 2) a recirculation line branching off from the exhaust-gas discharge system upstream of the turbine so as to form an outlet-side junction which opens into the bypass line. A first control element at the outlet-side junction adjusts an exhaust-gas quantity conducted through the recirculation line. A second control element at the inlet-side junction has a first position that separates the bypass line from the cylinder and connects the intake line to the cylinder, and a second position that separates the intake line from the cylinder and connects the bypass line to the cylinder. | 07-11-2013 |
20130174547 | METHOD AND OBSERVER FOR DETERMINING THE EXHAUST MANIFOLD TEMPERATURE IN A TURBOCHARGED ENGINE - The disclosure relates to a method and an observer for determining the exhaust manifold temperature in a turbocharged engine upstream of the turbine. In one example, a method for determining an exhaust manifold temperature in a turbocharged engine, said engine including a turbocharger and a turbine and said exhaust manifold temperature including a temperature upstream of the turbine, said method comprises estimating a value of the exhaust manifold temperature based on a model, measuring a temperature downstream of the turbine, and correcting the value of the exhaust manifold temperature based on said measurement. | 07-11-2013 |
20130174548 | EGR for a Two-Stroke Cycle Engine without a Supercharger - A two-stroke cycle, turbo-driven, opposed-piston engine with one or more ported cylinders and uniflow scavenging has no supercharger. The engine includes a high pressure EGR loop and a pump in the EGR loop to boost the pressure of the recirculated exhaust products. | 07-11-2013 |
20130180242 | ENGINE ASSEMBLY AND WASTE HEAT RECOVERY SYSTEM - An engine assembly comprising an internal combustion engine and a waste heat recovery system, wherein the waste heat recovery system is configured to direct refrigerant around a loop which comprises:
| 07-18-2013 |
20130192223 | EXHAUST SYSTEM - An exhaust system for an engine includes a first exhaust manifold configured to receive exhaust from the engine, a second exhaust manifold configured to receive exhaust from the engine in parallel with the first exhaust manifold, and at least two turbochargers configured to receive exhaust from the first and second exhaust manifolds. The system also includes a first turbocharger valve fluidly connected to one of the at least two turbochargers. The first turbocharger valve is configured to selectively fluidly connect the one of the at least two turbochargers to the first and second exhaust manifolds. The system further includes a recirculation circuit in fluid communication with the first exhaust manifold. The recirculation circuit includes a first recirculation valve configured to regulate passage of exhaust through the recirculation circuit. | 08-01-2013 |
20130192224 | EXHAUST PURIFICATION SYSTEM OF INTERNAL COMBUSTION ENGINE - An internal combustion engine wherein an exhaust purification catalyst and a hydrocarbon feed valve are arranged downstream in an exhaust passage. A first NOX purification method, which removes NOX by making a concentration of hydrocarbons that flows into the exhaust purification catalyst vibrate within predetermined amplitude and period ranges and a second NOX purification method which utilizes an adsorption action of NOX to the exhaust purification catalyst are used. A high pressure exhaust gas recirculation system (HPL) causing recirculation of high pressure exhaust gas and a low pressure exhaust gas recirculation system (LPL) causing recirculation of low pressure exhaust gas are provided. When performing an LPL recirculation while performing an NOX purification action by the second NOX purification method, if an acceleration operation occurs, the NOX purification action is switched to the NOX purification action by the first NOX purification method and recirculation is temporarily switched to the HPL recirculation. | 08-01-2013 |
20130199177 | Method and device for adapting signals of an oxygen sensor in the air supply channel of an internal combustion engine - A method/device for evaluating oxygen sensor signals of an air supply channel connected to an exhaust gas channel of the internal combustion engine, via an exhaust gas recirculation having at least one exhaust gas recirculation valve; the oxygen sensor being downstream from the exhaust gas recirculation initiation; the sensor signal(s) being corrected as a function of at least one characteristics variable describing the dependence of the sensor signal on the oxygen concentration or a correlated variable, and/or additional physical variables. At at least one engine operating point(s), in response to a closed exhaust gas recirculation valve, output oxygen sensor signals and additional operating point parameters are recorded/stored; and an adaptation of the characteristic variables is derived assuming that the gas composition corresponds to pure air. Also, a characteristics curve adjustment and a compensation of pressure temperature dependencies may be performed to improve the accuracy of the oxygen sensor signals. | 08-08-2013 |
20130199178 | Waste Heat Utilization Apparatus for Internal Combustion Engine - A Rankine circuit ( | 08-08-2013 |
20130199179 | TURBOCHARGER SYSTEM - A turbocharger system for ensuring a sufficient exhaust gas recirculation (“EGR”) amount in all operating conditions, and reducing NOx emission from an engine. The system includes an EGR controller that re-circulates a part of exhaust gas discharged from the engine to an intake side. The turbocharger is a power-assisted turbocharger including an electric motor that assists a drive force of a compressor. The EGR controller controls an amount of exhaust gas recirculated to the intake side so as to inhibit the generation of NOx regardless of an amount of oxygen necessary for combustion of the engine. An electric motor control unit drives the electric motor, by the control of the EGR controller, when the amount of oxygen necessary for the combustion of the engine is deficient. | 08-08-2013 |
20130205774 | ASYMMETRIC EXHAUST GAS RECIRCULATION SYSTEM - Systems and methods for a twin turbocharged engine with a single exhaust gas recirculation (EGR) system are disclosed. In one example approach a system is provided comprising a first turbocharger in a first intake passage with a low-pressure EGR system fluidically coupling exhaust exiting the first turbocharger to intake air entering the first turbocharger, and a second turbocharger in a second intake passage without a low-pressure EGR system fluidically coupling exhaust exiting the second turbocharger to intake air entering the second turbocharger. | 08-15-2013 |
20130219886 | EXHAUST GAS RECIRCULATION ARRANGEMENT WITH CONDENSATE DISCHARGE - In an exhaust gas recirculation arrangement in which condensate is discharged from an exhaust gas recirculation path of an internal combustion engine, in particular of a motor vehicle, wherein, due to a pressure difference between a condensate collection region arranged in the EGR path and a condensate discharge region, collected condensate is discharged at least partially from the condensate collection region into the condensate discharge region, when the pressure level prevalent in the condensate collection region is greater than in the condensate discharge region in a secure manner and with low environmental impact. | 08-29-2013 |
20130232972 | INTERNAL COMBUSTION ENGINE - In an exhaust gas turbocharger system for charging an engine including a compressor arrangement at a charging fluid side LL and a turbine arrangement at an exhaust gas side AG, a further compressor which is driven by a separate controllable drive and whose primary side is connected to the charging fluid side LL while its secondary side is connected to the exhaust gas side is provided for compressing charge air taken from the charging fluid side and supply it to the exhaust gas side for assisting driving the exhaust gas turbines so as to maintain them at relatively high speeds in transition periods including engine idling. | 09-12-2013 |
20130247567 | EXHAUST-GAS RECIRCULATION SYSTEM AND METHOD FOR EXHAUST-GAS RECIRCULATION - The present disclosure provides systems and methods for adjusting an exhaust gas recirculation rate to provide accurate air-fuel ratio. The disclosure provides a method for calculating an exhaust-gas recirculation rate based on a measured exhaust-gas lambda and a turbocharger speed. Through the use of the exhaust-gas lambda and the turbocharger speed it is possible to calculate an exhaust-gas recirculation rate while dispensing with the difficult and unreliable determination of the mass air flow for determining an exhaust-gas recirculation rate, thus providing a stable method which further reduces fuel consumption and emissions. | 09-26-2013 |
20130255251 | INTERNAL COMBUSTION ENGINE SYSTEM - Internal combustion engine system includes an electric supercharger which supercharges sucked air; a throttle valve which adjusts the flow amount of intake air of supercharged air into a cylinder; an EGR path in which a part of exhaust gas exhausted from the exhaust manifold side is recirculated to the intake manifold side; an EGR valve which adjusts the amount of exhaust gas passing through the EGR path; and an internal combustion engine control unit which controls the throttle valve, the EGR valve, and the electric supercharger. This enables to satisfy both performance of the supercharger and fuel consumption of the internal combustion engine without complicating the structure of EGR. | 10-03-2013 |
20130263593 | Exhaust Aftertreatment And Exahust Gas Recirculation Systems - In an exemplary embodiment, an internal combustion engine includes an oxidation catalyst configured to receive an exhaust gas flow from the internal combustion engine, a urea injector positioned downstream of the oxidation catalyst to inject a urea flow into the exhaust gas flow and a mixer positioned downstream of the urea injector to mix the exhaust gas flow and the urea flow to form a mixed exhaust gas and urea flow. The engine also includes a particulate filter and catalytic reduction assembly positioned downstream of the mixer to receive the mixed exhaust and urea flow from the mixer to form a treated exhaust gas flow and an exhaust gas recirculation system coupled to the particulate filter to receive a portion of the treated exhaust gas flow and recirculate the portion of the exhaust gas flow to be mixed with a fresh air flow for the internal combustion engine. | 10-10-2013 |
20130269341 | MULTI-STAGE SUPERCHARGING APPARATUS - A multi-stage supercharging apparatus including a first supercharger and a second supercharger. The first supercharger is provided with a first turbine accommodating section, a first exhaust inlet, and a first exhaust outlet which extends in an axial direction of the first turbine from the first turbine accommodating section and is bent upward. The second supercharger is provided with a second turbine, a second turbine accommodating section, and a second exhaust inlet which is directly connected to the first exhaust outlet to allow the first exhaust outlet to be communicated with the second turbine accommodating section, and the second supercharger is supported by the first supercharger by placing an opening of the second exhaust inlet on an opening of the first exhaust outlet. | 10-17-2013 |
20130283788 | LOW-PRESSURE LOOP EGR DEVICE | 10-31-2013 |
20130283789 | METHOD AND SYSTEM FOR A TURBOCHARGED ENGINE - Methods and systems are provided for a boosted engine having a split intake system coupled to a split exhaust system. Aircharges of differing composition, pressure, and temperature may be delivered to the engine through the split intake system at different points of an engine cycle. In this way, boost and EGR benefits may be extended. | 10-31-2013 |
20130298552 | SYSTEMS AND METHODS FOR SERIES-SEQUENTIAL TURBOCHARGING - Series-sequential turbocharging systems and related methods are disclosed herein for boosting the intake pressure of an internal combustion engine, such as a split-cycle engine that operates in accordance with a Miller cycle. In some embodiments, a multi-stage turbocharging system is used in which a small flow capacity turbocharger with an associated turbine bypass valve is incorporated in series with a larger turbocharger and an aftercooler. At low engine speeds, the bypass valve is closed and the small flow capacity turbocharger performs the bulk of the compression work. At high engine speeds, the bypass valve is opened and the larger turbocharger performs the bulk of the compression work. The bypass valve can be modulated when the engine is operated at transitional speeds. Using this series-sequential turbocharging system, the boost and flow range required for optimal efficiency and performance can be met across the engine's speed range. | 11-14-2013 |
20130298553 | EXHAUST GAS RECIRCULATION APPARATUS FOR HEAVY CONSTRUCTION EQUIPMENT - An exhaust gas recirculation apparatus for heavy construction equipment of the present disclosure, includes: a hybrid EGR line which introduces a part of exhaust gas from an exhaust manifold into a compressor so as not to pass through a turbine; and a hybrid EGR valve which is provided in the hybrid EGR line, and controlled to be opened and closed so that a part of the exhaust gas discharged from the exhaust manifold is introduced into an inlet of the compressor. | 11-14-2013 |
20130305715 | BOOST RESERVOIR EGR CONTROL - Methods and systems are provided for reducing turbo lag in a boosted engine. A boost reservoir coupled to the engine may be charged with compressed intake air and/or combusted exhaust gas. The pressurized charge may then be discharged during a tip-in to either the intake or the exhaust manifold. | 11-21-2013 |
20130305716 | BOOST RESERVOIR AND THROTTLE COORDINATION - Methods and systems are provided for reducing turbo lag in a boosted engine. A boost reservoir coupled to the engine may be charged with compressed intake air and/or combusted exhaust gas. The pressurized charge may then be discharged during a tip-in to either the intake or the exhaust manifold. | 11-21-2013 |
20130305717 | SELF-PROPELLED CONSTRUCTION DEVICE, IN PARTICULAR A SOIL COMPACTOR - A self-propelled construction device, in particular a soil compactor, includes a turbocharged diesel engine with a first radiator arrangement for cooling charge air and a second radiator arrangement for cooling a cooling liquid and/or hydraulic oil, with a first radiator fan being allocated to the first radiator arrangement and a second radiator fan being allocated to the second radiator arrangement and the first radiator fan and the second radiator fan being able to be operated essentially independently from each other. | 11-21-2013 |
20130340427 | ENGINE INCLUDING LOW PRESSURE EGR SYSTEM AND INTERNAL EGR - An engine assembly may include an engine structure, an exhaust system, an intake system, a valvetrain assembly and an exhaust gas recirculation system. The engine structure may define a combustion chamber and intake and exhaust ports in communication with the combustion chamber. The exhaust system may include an exhaust conduit in communication with exhaust port. The intake system may include a turbocharger in communication with the exhaust conduit and the intake port. The valvetrain assembly may provide internal recirculation of exhaust gas within the combustion chamber. The exhaust gas recirculation system may include an EGR line extending from the exhaust conduit at a location between the turbocharger and an outlet of the exhaust conduit to the intake system and may provide communication between the intake and exhaust systems. | 12-26-2013 |
20130340428 | VARIABLE FLOW VALVE FOR TURBOCHARGERS - A variable flow valve with position feedback is disclosed. The variable flow valve includes a housing having an inlet port and a discharge port and one or more control ports, and also includes a piston connected to a primary valve to open and close fluid communication between an inlet port and a discharge port of the housing. The housing and the piston intermesh to define an inner chamber and an outer chamber each in fluid communication with its own control port. A control port valve opens and closes at least one of the control ports to control access to a source of pressure change. A position sensor is part of the position feedback and communicates the position of the primary valve, relative to the discharge port, to a controller that operates the control port valve to hold the primary valve in a position where the discharge port is partially open. | 12-26-2013 |
20140000256 | TURBINE FOR AN EXHAUST GAS TURBOCHARGER AND EXHAUST GAS TURBOCHARGER HAVING SUCH A TURBINE | 01-02-2014 |
20140013739 | ENGINE INCLUDING CAMSHAFT WITH LOBE FEATURES FOR INTERNAL EXHAUST GAS RECIRCULATION - An engine assembly includes a camshaft having an exhaust cam lobe defining an exhaust lift region and an exhaust base circle region and an EGR cam lobe defining an EGR lift region and an EGR base circle region. The EGR lift region is rotationally offset from the exhaust lift region and the EGR base circle region is rotationally aligned with the exhaust lift region. An exhaust valve lift mechanism is engaged with an exhaust valve, the exhaust cam lobe and the EGR cam lobe and is operable in first and second modes. The exhaust valve remains closed when the EGR lift region engages the exhaust valve lift mechanism during the second mode and the exhaust valve is opened when the EGR lift region engages the exhaust valve lift mechanism during the first mode to provide exhaust gas flow into the combustion chamber during an intake stroke of the combustion chamber. | 01-16-2014 |
20140013740 | ENGINE WITH IMPROVED EGR SYSTEM - An exemplary turbocharger system for an internal combustion engine is provided. The turbocharger system includes a first turbine and a second turbine. The first turbine is in fluid communication with the internal combustion engine. The first turbine receives a first portion exhaust gas discharged from the internal combustion engine and provides a first turbine exhaust gas. The second turbine is in fluid communication with the first turbine via an inter-stage channel. The inter-stage channel transports the first turbine exhaust gas from the first turbine to the second turbine. The inter-stage channel is in thermal connection with an exhaust gas recirculation channel defined between an inlet and an outlet of the internal combustion engine. The first turbine exhaust gas flowing through the inter-stage channel is capable of being heated by a second portion exhaust gas discharged from the internal combustion engine and flowing through the exhaust gas recirculation channel. | 01-16-2014 |
20140013741 | SOOT BURNING METHOD FOR PARTICULATE FILTERS - Methods and systems are provided for regenerating a particulate filter in an engine exhaust, where burning of soot is initiated by introducing additional oxygen into the exhaust gas upstream of the particulate filter where an exhaust temperature exceeds a threshold, a soot burn rate controlled by adjusting pulsing of the additional oxygen. Further, the pulsing of the additional oxygen is introduced via a high-pressure EGR passage during boosted engine conditions. | 01-16-2014 |
20140020382 | MIXER FOR DEDICATED EXHAUST GAS RECIRCULATION SYSTEMS - Systems, methods and techniques for exhaust gas recirculation are provided. The system includes mixing exhaust flow from at least one cylinder of an engine with air in an air intake system prior to combustion. The exhaust flow from the at least one cylinder is accumulated prior to mixing and distributed into the intake air system in a controlled manner. | 01-23-2014 |
20140026563 | EGR Constructions for Opposed-Piston Engines - A two-stroke, opposed-piston engine with one or more ported cylinders and uniflow scavenging includes an exhaust gas recirculation (EGR) construction that provides a portion of the exhaust gasses produced by the engine for mixture with charge air to control the production of NOx during combustion. | 01-30-2014 |
20140033705 | SYSTEMS AND METHODS FOR CONTROLLING EXHAUST GAS RECIRCULATION - Various systems and method for controlling exhaust gas recirculation (EGR) in an internal combustion engine are provided. In one embodiment, a method includes during a first operating condition, directing exhaust gas from a first cylinder group into an engine air intake stream and directing substantially no exhaust gas from a second cylinder group to the engine air intake stream. The method further includes during a second operating condition, directing exhaust gas from the second cylinder group through a turbocharger bypass into the engine air intake stream and reducing a fuel injection amount of the first cylinder group relative to a fuel injection amount of the second cylinder group. | 02-06-2014 |
20140041384 | METHODS AND SYSTEM FOR CONTROLLING SURGE IN A TWO-STAGE TURBOCHARGER - Various methods and systems are provided for controlling air flow in a two-stage turbocharger. In one example, an engine method comprises adjusting one or more exhaust gas recirculation valves to maintain a first turbocharger within a first air flow range, and adjusting a turbocharger bypass valve to maintain a second turbocharger within a second air flow range. | 02-13-2014 |
20140041385 | Reciprocating Internal Combustion Engine Having at Least One Piston - A reciprocating internal combustion engine includes a reciprocating piston in a cylinder bore of a cylinder housing forming an assembly together with a cylinder head. Two connecting rods are connected between the piston and first and second crankshafts. The two crankshafts are functionally connected to two synchronization gears of a spur gear box. The synchronization gears are connected to the crankshafts in a torque-proof manner such that the crankshafts rotate synchronously in opposite directions. The engine operates based on the diesel principle and with exhaust gas turbocharging, wherein the engine is an outboard engine for a watercraft. The exhaust gas turbocharger has an exhaust gas turbine and a compressor and/or a shaft which carries a turbine wheel and a compressor wheel which runs perpendicular to the longitudinal dimension of the watercraft. The turbocharger is attached on an upper end-face wall of the assembly. | 02-13-2014 |
20140053553 | NOx Emission Control Using Large Volume EGR - An EGR system is disclosed for reducing NO | 02-27-2014 |
20140060043 | INTERNAL COMBUSTION ENGINE CONTROL APPARATUS - An object of the invention is to provide an internal combustion engine control apparatus that can restrain an EGR amount from becoming excessive, and restrain destabilization of combustion . . . . First, in response to a change of an operation condition, operation amounts of a plurality of actuators that influence the EGR amount are set. When the operation amounts of the plurality of actuators are set, operation of an actuator that decreases the EGR amount (referring to an external EGR amount, an internal EGR amount or both, the same applying to the following) is started (S | 03-06-2014 |
20140075936 | EXHAUST POWER TURBINE DRIVEN EGR PUMP FOR DIESEL ENGINES - A power plant is provided and may include an engine configured to receive charge air and produce exhaust. A first turbo machine may be driven by the exhaust and may drive a compressor that receives air and produces the charge air. A second turbo machine may receive the exhaust and may rotationally drive a pump in response thereto. The pump may receive an EGR from the exhaust and may introduce the pumped EGR to the charge air. | 03-20-2014 |
20140083096 | METHOD AND APPARATUS FOR CONTROLLING TURBINE EFFICIENCY - A method of controlling turbine efficiency in a turbo unit provided on an internal combustion engine includes providing a flow of gas in an area upstream a turbine at a direction different to the flow of exhaust gases in the same area, regulating the flow by a valve, and controlling the valve from a control unit having at least boost pressure and/or EGR flow as input parameters. | 03-27-2014 |
20140090374 | EXHAUST AFTERTREATMENT SYSTEM AND METHOD - An engine exhaust gas treatment system includes an oxidation catalyst, a NO | 04-03-2014 |
20140109571 | SYSTEM AND METHOD FOR CONTROLLING EXHAUST EMISSIONS AND SPECIFIC FUEL CONSUMPTION OF AN ENGIINE - A method includes combusting air within a plurality of cylinders of an internal combustion engine by injecting a fuel into the plurality of cylinders. The method further includes expanding a first portion of an exhaust gas generated from the plurality of combustion cylinders via a turbine. The method further includes controlling at least one of feeding a second portion of the exhaust gas via an exhaust channel bypassing the turbine; and recirculating a third portion of the exhaust gas to the plurality of combustion cylinders via a recirculation channel, as a function of an intake manifold air temperature and pressure at which the engine is operated. | 04-24-2014 |
20140109572 | EXHAUST MANIFOLD FOR AN INTERNAL COMBUSTION ENGINE, IN PARTICULAR IN MOTOR VEHICLES - An exhaust manifold for an internal combustion engine with exhaust turbocharging and an exhaust gas recirculation device, includes a header pipe with several inflow openings connected with the combustion chambers of the internal combustion engine via connecting pieces, and outlet openings branching from the header pipe via connecting branches for the exhaust gas recirculation and the exhaust turbocharger. To achieve a high exhaust gas recirculation. rate and an effective pressurization of the exhaust turbocharger with exhaust gas, at least one flow guide element is arranged in the header pipe close to the outlet openings which divides the exhaust gas flow onto the two outlet openings in a targeted manner. | 04-24-2014 |
20140130494 | AIR COMPRESSING DEVICE OF ENGINE - In a air compressing device of an engine, a supercharger interposed in an EGR pipe diverging from a portion of an exhaust pipe of the engine on the downstream side of a turbine of a turbocharger, pressurizing an EGR gas introduced into an EGR pipe by a compressor driven by rotation of the engine and supplying the pressurized EGR gas to an intake manifold of the engine, and control structure for adjusting an opening of a throttle valve arranged in a portion of the EGR pipe on the downstream side of the compressor of the supercharger and controlling a supply amount of the EGR gas supplied from the compressor to the intake manifold. | 05-15-2014 |
20140130495 | METHOD FOR OPERATING AN INTERNAL COMBUSTION ENGINE HAVING HIGH PRESSURE AND LOW PRESSURE EXHAUST GAS RECIRCULATION - The invention relates to a method for operating an internal combustion engine, a turbine of an exhaust gas turbocharger situated in an exhaust system of the internal combustion engine being driven by exhaust gas from the internal combustion engine, and a compressor of the exhaust gas turbocharger powered by the turbine and situated in a combustion air system of the internal combustion engine compressing combustion air, exhaust gas being diverted in a high pressure exhaust gas recirculation loop upstream from the turbine and mixed with the combustion air downstream from the compressor, exhaust gas being diverted in a low pressure exhaust gas recirculation loop downstream from the turbine and mixed with the combustion air upstream from the compressor, exhaust gas being purified by a low pressure exhaust gas recirculation filter in the LP-EGR loop, a predetermined value for a total exhaust gas recirculation flow. | 05-15-2014 |
20140165560 | LOW PRESSURE EGR AMMONIA OXIDATION CATALYST - An internal combustion engine system includes an internal combustion engine generating an exhaust gas stream and an air intake system coupled to the internal combustion engine. The engine system also includes a turbocharger that includes a turbine in exhaust gas receiving communication with the exhaust gas stream and a compressor in air receiving communication with the air intake line. Further, the engine system includes an exhaust system in exhaust gas receiving communication with the internal combustion engine. The exhaust system has a main exhaust line and a low pressure (LP) exhaust gas recirculation (EGR) line through which at least a portion of the exhaust gas in the main exhaust line downstream of the turbine is flowable into the air intake system. The exhaust system further includes an ammonia oxidation catalyst positioned within the LP EGR line. | 06-19-2014 |
20140174078 | EGR SYSTEM HAVING FLOW RESTRICTING VALVE - A fluid valve is disclosed for use in an exhaust system of an engine. The fluid valve may have a body and an inlet formed within the body. The inlet may have a curved first end surface with a raised convex first opening. Opposite the inlet, the fluid valve may also have an outlet formed within the body. The outlet may have a second end surface with a second opening. The fluid valve may also have a restriction formed between the first end surface and the second end surface, which connects the first and second openings. | 06-26-2014 |
20140190163 | SUPERCHARGED TURBOCOMPOUND HYBRID ENGINE APPARATUS - The present invention is relative to a control method of a turbo-compound engine apparatus wherein said apparatus comprises a low pressure compressor connected to the high pressure turbine and a low pressure turbine connected to a high pressure compressor by means of a coupling unit. The apparatus also comprises first bypassing means of said high pressure compressor. The method according to the invention comprises the step of deactivating said first bypassing means when at least a specific condition occurs. | 07-10-2014 |
20140196454 | METHOD AND SYSTEM FOR CATALYST TEMPERATURE CONTROL - Methods and systems are provided for controlling and coordinating control of a post-catalyst exhaust throttle and an EGR valve to expedite catalyst heating. By closing both valves during an engine cold start, an elevated exhaust backpressure and increased heat rejection at an EGR cooler can be synergistically used to warm each of an engine and an exhaust catalyst. The valves may also be controlled to vary an amount of exhaust flowing through an exhaust venturi so as to meet engine vacuum needs while providing a desired amount of engine EGR. | 07-17-2014 |
20140202150 | Reciprocating Exhaust Mechanism for Energy Recuperation and Gas Recirculation - The reciprocating piston of an exhaust pressure wave charger for a combustion engine has an integrated hydraulic piston and an air piston transferring exhaust gas energy into mechanical power and provides exhaust gas for the combustion chamber. The fluid communication between hydraulic piston and hydraulic circuit is controlled by valves to extract the exhaust energy during the expansion stroke and advance the charger piston back into top end position. The hydraulic piston has two faces for adapting the hydraulic piston force more closely to the exhaust gas forces. Exhaust gas recirculation (EGR) is provided by an air piston and valves controlling the flow of exhaust gas into the combustion chamber. | 07-24-2014 |
20140208743 | TURBOCHARGER OPERATION TO INCREASE BRAKE EFFECTIVENESS - In response to activation of a compression release brake when a motor vehicle having a turbocharged internal combustion engine is operating at some elevation above sea level and a turbocharger compressor is operating in a region of an operating map which is creating boost air in an engine intake manifold which would cause the compression release brake to decelerate the vehicle more slowly at that elevation than it would at sea level for the same operating conditions of the vehicle and engine other than altitude, the compression release brake decelerates the vehicle less slowly by causing an exhaust gas recirculation system to reduce at least one of a) mass of exhaust diverted to an intake system of the engine and b) cooling of the diverted exhaust. | 07-31-2014 |
20140208744 | EGR APPARATUS FOR INTERNAL COMBUSTION ENGINE - A mixing device of an EGR apparatus has a double pipe structure being composed of a first cylindrical member and a second cylindrical member, wherein the first and second cylindrical members are coaxially arranged with each other. Cyclone blades are provided between the first and second cylindrical members, so that EGR gas introduced from an inlet portion into an inside of the first cylindrical member flows along an cylindrical inner wall of the first cylindrical member. A swirl flow is generated in the EGR gas passing through the cyclone blades, so that the EGR gas spirally flows in a downstream side to remove foreign material, such as flocculated water from the EGR gas. | 07-31-2014 |
20140216030 | EXHAUST SYSTEM WITH A REFORMER CATALYST - An exhaust system for treating exhaust gas from an internal combustion engine is disclosed. The system comprises a three-way catalyst (TWC), a fuel reformer catalyst located downstream of the TWC, and a fuel supply means located upstream of the fuel reformer catalyst. The exhaust gas is split into two portions. The first portion of the exhaust gas bypasses the TWC and contacts the fuel reformer catalyst in the presence of fuel added from the fuel supply means, and is then recycled back to the engine intake. The second portion of the exhaust gas is contacted with the TWC and is then utilized to heat the fuel reformer catalyst before being expelled to atmosphere. The exhaust system allows for maximum heat exchange from the exhaust gas. | 08-07-2014 |
20140230434 | METHODS AND SYSTEM FOR COOLING EXHAUST SYSTEM COMPONENTS - Various methods and systems are provided for cooling exhaust system components. In one example, a method comprises directing compressed air onto an exterior of an engine exhaust passage valve. | 08-21-2014 |
20140260243 | SELF-SUSTAINING LOW PRESSURE EGR AND EXHAUST SYSTEM - An exhaust system, comprising a LP-EGR system that couples an exhaust system to an intake system and an exhaust pipe within the exhaust system with a turn greater 90 degrees and less than 270 degrees between front and rear tires and upstream of a LP-EGR exhaust inlet; and a muffler positioned in the exhaust system downstream of the LP-EGR exhaust inlet and forward of the front tires. By shortening the LP-EGR path, back pressure to sustain EGR flow can be maintained without the use of a back pressure valve. | 09-18-2014 |
20140283514 | CONTROL DEVICE FOR TURBOCHARGED DIESEL ENGINE - An object of the invention is to satisfy various constraints associated with supercharging pressure control even during transitional operation in a turbocharged diesel engine of which a supercharging pressure is actively controllable through operation of an actuator. The control device calculates a steady target value that is a target value of the supercharging pressure during steady operation on the basis of an engine rotation speed and a fuel injection amount, and operates the actuator through feedback control such that an actual supercharging pressure calculated from a signal of a supercharging pressure sensor is brought close to the steady target value. However, when any condition of a plurality of different conditions, which can be satisfied during transitional operation, is satisfied, a transitional target value of the supercharging pressure, suitable for the satisfied condition is calculated in accordance with a calculation rule prepared for each condition. At this time, when there is one transitional target value, the transitional target value is selected, and, when there are a plurality of transitional target values at the same time, one of the transitional target values is selected in accordance with a priority order determined on the basis of an acceleration. A target value of feedback control is changed from the steady target value to the selected transitional target value. | 09-25-2014 |
20140298803 | PRE-LUBRICATION AND SOAK-BACK SYSTEM FOR A MACHINE - A lubrication system for an engine is disclosed. The lubrication system may have an oil pump configured to lubricate the engine. The lubrication system may also have a valve configured to direct oil from the oil pump to a fuel pump associated with the engine. The lubrication system may further have a controller. The controller may be configured to determine an operating speed of the engine. The controller may also be configured to adjust the valve to selectively direct the oil to the fuel pump based on the operating speed. | 10-09-2014 |
20140298804 | INTERNAL COMBUSTION ENGINE FOR A MOTOR VEHICLE - In an internal combustion engine for a motor vehicle, having a first cylinder bank and a second cylinder bank and an exhaust tract including a first exhaust manifold and a second exhaust manifold with a first exhaust gas duct and a second exhaust gas duct and a first exhaust gas turbocharger including a first turbine situated in the exhaust tract and a second exhaust gas turbocharger including a second turbine arranged in the exhaust tract, the first turbine and the second turbine are selectively drivable in alternation by at least a portion of the exhaust gas via a valve device that is switchable between at least three positions and is situated upstream from the first turbine and the second turbine so that, in a first position of the valve device, the engine is operated in a pulse supercharging mode; in a second position of the valve device, the engine is operated in a ram charging mode and in a third position of the valve device, the engine is operated in a sequential supercharging mode. | 10-09-2014 |
20140298805 | CONTROL UNIT OF INTERNAL COMBUSTION ENGINE - The present invention relates to a control unit of an internal combustion engine capable of performing a coordinate control of an exhaust gas recirculation (hereinafter abbreviated as “EGR”) gas supply amount by an EGR apparatus and a supercharging amount by a supercharger provided with a variable flow mechanism. The control unit comprises: a state quantity estimation section for calculating an in-cylinder oxygen excess ratio based on an operating state of the internal combustion engine; and a switching part for switching the respective opening degree commands for the EGR valve and the variable flow mechanism of the supercharger so that the opening degree of the EGR valve and the opening degree of the variable flow mechanism become smaller than in a normal state when the internal combustion engine is determined to be in the transient state based on the calculated in-cylinder oxygen excess ratio. | 10-09-2014 |
20140325984 | METHOD AND SYSTEMS FOR A PASSAGEWAY BLOCK - Various methods and systems are provided for flowing fluid through a passageway block. In one embodiment, a passageway block comprises a first passage and a second passage, each of the first passage and the second passage including inlets and outlets to the passageway block, none of the inlets and outlets being concentric with one another; but within the passageway block, for at least a portion, a third passage concentrically surrounds the second passage. | 11-06-2014 |
20140331668 | DIRECT INJECTION OF DILUENTS OR SECONDARY FUELS IN GASEOUS FUEL ENGINES - An engine system, comprising a first gaseous fuel source with a first gaseous fuel located therein coupled to one or more engine cylinders and an exhaust gas recirculation (EGR) system with a reform catalyst located therein, the reform catalyst reforming natural gas into a gas with a wider AFR operating range. The engine may thus operate at an AFR that may be outside of that available during natural gas combustion alone to allow for cooler engine operation. | 11-13-2014 |
20140331669 | EGR Pulse Mixer for Internal Combustion Engine Having EGR Loop - A mixer, for use with an internal combustion engine, for mixing EGR gas from an EGR loop with fresh air from the engine's fresh air intake. The mixer has an outer shell having the general shape of a thin-shelled hollow cylinder with a side entry port. One end of the cylinder provides a straight entry port and the other end of the cylinder provides a straight exit port. An inner sleeve fits inside the outer shell such that a space is provided between the inner sleeve and the outer shell, and a passageway is formed inside the inner sleeve through the length of the mixer. The inner sleeve has a series of flow ribs extending from its outer surface within the space, and has entry holes for providing fluid communication from the space into the passageway. | 11-13-2014 |
20140338328 | Nozzled Turbine - A turbine includes a turbine housing having two gas passages of substantially the same flow area. A nozzle ring is disposed in the housing and around the turbine wheel. The nozzle ring includes first and second outer rings, and an inner ring disposed between the first and second outer rings. First and second pluralities of vanes are disposed between the rings. The second outer ring has a thicker cross section than the first outer ring such that a larger flow area is created between the first outer ring and the inner ring than a flow area created between the second outer ring and the inner ring. | 11-20-2014 |
20140352298 | EXHAUST CIRCULATION APPARATUS FOR INTERNAL COMBUSTION ENGINE - An exhaust circulation apparatus that can improve fuel combustion and suppress discharged NOx by expanding an operating region in which homogeneous lean combustion is possible. The exhaust circulation apparatus includes a homogeneous lean combustion unit for performing homogeneous lean combustion in a predetermined lean-burn region, and an EGR apparatus for performing EGR that recirculates a portion of gas that flows through an exhaust system of the internal combustion engine to an intake system. When performing homogeneous lean combustion, the exhaust circulation apparatus controls the EGR apparatus to perform EGR. An LPL-EGR apparatus that recirculates gas flowing through an exhaust passage on a downstream side of a turbine to an intake passage on an upstream side of a compressor is used as the EGR apparatus. Preferably, an air-fuel ratio is controlled so as to be 22 and an EGR rate is controlled so as to be between 10% and 20%. | 12-04-2014 |
20140360186 | METHOD AND DEVICE FOR DESULPHURIZING AN EXHAUST-GAS RECIRCULATION FLOW - A method for desulphurizing an exhaust-gas recirculation flow of an internal combustion engine supplied to the internal combustion engine on the fresh-air side includes branching a partial exhaust-gas flow from the exhaust-gas flow of the internal combustion engine. At least one reactant is supplied to the partial exhaust-gas flow that splits to form ammonia, and the thus laden partial exhaust-gas flow is supplied partially, as an exhaust-gas recirculation flow, to the fresh-air side and partially, as an aftertreatment partial flow, to an exhaust-gas aftertreatment system. The flow rate of the exhaust-gas recirculation flow supplied to the fresh-air side and the flow rate of the aftertreatment partial flow supplied to the exhaust gas aftertreatment system are predefined and/or varied by a regulating device as a function of at least one operating parameter that defines the respective operating state of the internal combustion engine. | 12-11-2014 |
20140366532 | EXHAUST GAS RECIRCULATION AND CONTROL WITH TWIN SCROLL TURBINES - Systems and methods for internal combustion engine operation with exhaust gas recirculation and turbocharging are disclosed. The systems include an exhaust gas recirculation loop for recirculating exhaust gas flow from a first portion of the cylinders of the engine into an intake system prior to combustion. The system further includes a turbine with first and second inlets for receiving exhaust gas flows from respective first and second parts of the exhaust gas of the remaining portion of the cylinders. | 12-18-2014 |
20140366533 | SUPERCHARGER-EQUIPPED INTERNAL COMBUSTION ENGINE - A supercharger-equipped internal combustion engine in the present invention includes a turbo-supercharger ( | 12-18-2014 |
20150007563 | DIRECT INLET AXIAL AUTOMOTIVE TURBINE - Systems and methods for operating a turbocharged engine are described. In one example, a turbocharger system, comprising: a bearing housing including a turbine and at least one compressor coupled to the turbine via a shaft; and wherein the turbine comprises a stator stage and a rotor stage mounted to the cylinder head by the bearing housing and positioned in an exhaust passage of a cylinder head. In this way, a more compact design is achieved which eliminates the cost and complexity of a turbine housing and improves turbine efficiency by positioning the turbine closer to the exhaust pulses. | 01-08-2015 |
20150007564 | FAILURE DETECTION DEVICE FOR EXHAUST RECIRCULATION APPARATUS OF ENGINE WITH SUPERCHARGER - In an engine with a supercharger, a low pressure loop EGR apparatus includes a EGR passage to allow part of exhaust gas discharged from a combustion chamber of the engine to an exhaust passage to flow as EGR gas in an intake passage to return to the combustion chamber, and a EGR valve to regulate a flow of EGR gas in the EGR passage. The EGR passage has an inlet connected to the exhaust passage downstream of a turbine and an outlet connected to the intake passage upstream of a compressor. An ECU controls the EGR valve while the engine is in a predetermined operating condition, and determines whether or not the EGR valve is failed based on changes in intake amount in the intake passage during control of the EGR valve. | 01-08-2015 |
20150013332 | SYSTEM HAVING DUAL-VOLUTE AXIAL TURBINE TURBOCHARGER - A turbocharger is disclosed for use with an engine system. The turbocharger may have a housing at least partially defining a compressor shroud and a turbine shroud. The turbine shroud may form a first volute and a second volute, each having an inlet configured to receive exhaust from an exhaust manifold of the engine in a tangential direction, and an axial channel disposed downstream of the inlet. The turbocharger may also have a turbine wheel disposed within the turbine shroud and configured to receive exhaust from the axial channels of the first and second volutes, a compressor wheel disposed within the compressor shroud, and a shaft connecting the turbine wheel to the compressor wheel. The turbocharger may further have a nozzle ring in fluid communication with the axial channels of the first and second volutes at a location upstream of the turbine wheel. | 01-15-2015 |
20150033735 | EXHAUST GAS RECIRCULATION CONTROL - Methods and systems are disclosed for controlling an exhaust gas recirculation valve in an engine by determining errors in exhaust backpressure estimates and adapting EGR flow estimations based on these errors to meet target EGR dilutions in the engine. In one example approach, a method comprises adjusting valve position based on desired EGR flow and estimated EGR flow, where the estimated flow is based on estimated exhaust backpressure, and the estimated exhaust backpressure is updated based on errors between actual and desired intake oxygen concentration. | 02-05-2015 |
20150033736 | Exhaust Management Strategies For Opposed-Piston, Two-Stroke Engines - Exhaust temperature management strategies for an opposed-piston, two-stroke engine with EGR are based on control of a ratio of the mass of fresh air and external EGR delivered to a cylinder to the mass of the trapped charge (density of the delivered charge multiplied by the trapped volume at port closing). | 02-05-2015 |
20150047346 | METHODS AND SYSTEMS FOR BOOST CONTROL - Methods and systems are provided for varying a proportion of compressed air recirculated to a compressor inlet from a location downstream of the compressor and upstream of a charge air cooler and a location downstream of the charge air cooler. A temperature-controlled compressor recirculation flow is used to reduce condensation from EGR being ingested into the compressor. The temperature-controlled compressor recirculation flow is also used to address compressor surge. | 02-19-2015 |
20150047347 | METHODS AND SYSTEMS FOR BOOST CONTROL - Methods and systems are provided for managing a compressor temperature using EGR to address surge and condensation. A variable mixture of cooled compressor recirculation flow and hot EGR is provided to a compressor inlet. A composition of the mixture is adjusted to maintain a compressor inlet temperature sufficiently warm so as to reduce ingestion of condensation, and a compressor outlet temperature sufficiently cold to be within component temperature limits with flow above the surge limit. | 02-19-2015 |
20150047348 | EXHAUST GAS PURIFICATION DEVICE - An exhaust gas purification device to elevate the exhaust gas temperature on an inlet side of a diesel particulate filter. An oxidation catalyst and the diesel particulate filter are arranged in an exhaust path between exhaust ports of an engine and a turbocharger. The device also includes a urea spraying nozzle on an upstream side of the diesel particulate filter, and a selective catalytic reduction unit in an exhaust pipe on a downstream side of the turbocharger. | 02-19-2015 |
20150052891 | TURBOCHARGING DEVICE OF ENGINE FOR VEHICLE - A turbocharging device of an engine for a vehicle is provided. The turbocharging device includes a turbocharger for turbocharging intake air, an introduction passage connected to an introducing section of a compressor of the turbocharger, a discharge passage connected to a discharging section of the compressor of the turbocharger, a bypass passage connecting the introduction passage to the discharge passage and bypassing the compressor, and a bypass valve for opening and closing the bypass passage. A throttle part throttling a flow passage area of the introduction passage is formed in an inner circumferential surface of a part of the introduction passage, upstream of a connection part of the introduction passage with the bypass passage. | 02-26-2015 |
20150068204 | ENGINE SYSTEM - An engine system may include a main intake line, a supplementary intake line branched from the main intake line and joined to the main intake line, an intake bypass valve mounted to the main intake line, a main exhaust line mounted to an exhaust manifold, a supplementary exhaust line branched from the exhaust manifold and joined to the main exhaust line, an exhaust bypass valve mounted to the main exhaust line and selectively opening the main exhaust line, a turbocharger disposed adjacent to the supplementary exhaust line and operated by exhaust gas passing through the supplementary exhaust line, and a control unit for controlling the intake bypass valve and the exhaust bypass valve depending on an operation condition, wherein the exhaust gas is re-circulated from an upstream side of the exhaust bypass valve to the main intake line passing through an EGR (Exhaust Gas Recirculation) cooler and an EGR valve. | 03-12-2015 |
20150075162 | EXHAUST GAS RECIRCULATION APPARATUS OF ENGINE WITH SUPERCHARGER - In an engine provided with a supercharger and a low pressure loop EGR apparatus, an ECU controls an EGR valve to fully close when a detected operating condition is a predetermined operating condition. An outlet of an EGR passage is located at a higher position than an inlet in a vertical direction to allow condensed water to flow downward from downstream to upstream of the EGR valve and flow downward through the EGR passage to an exhaust passage. When the EGR valve has to be controlled to fully close, the ECU forcibly opens the EGR valve when a predetermined discharge condition is established to discharge the condensed water from a downstream side of the EGR valve. | 03-19-2015 |
20150082790 | LOW-PRESSURE-LOOP EXHAUST RECIRCULATION APPARATUS OF ENGINE - A low-pressure-loop EGR apparatus of an engine includes an EGR passage to allow part of exhaust gas discharged from a combustion chamber to return as EGR gas to the combustion chamber, and an EGR valve to regulate a flow of EGR gas in the EGR passage. This passage has an inlet connected to an exhaust passage downstream of a turbine and an outlet connected to an intake passage upstream of a compressor. In the intake passage, an intake bypass passage is provided to connect an upstream portion and a downstream part from the compressor. An ABV is provided in the passage. To remove EGR gas remaining in the ABV, one end of a residual gas removal passage is connected to the intake passage downstream of a throttle valve and the other end of the same passage is connected to the ABV. | 03-26-2015 |
20150089941 | EXHAUST GAS RECIRCULATION CONTROL DEVICE OF ENGINE - An exhaust gas recirculation control device of an engine is provided. The device includes: an exhaust turbocharger having a turbine disposed in an exhaust passage and a compressor disposed in an intake passage; an intercooler disposed in the intake passage downstream of the compressor; a low-pressure EGR passage connecting the exhaust passage downstream of the turbine to the intake passage upstream of the compressor; a low-pressure EGR valve disposed in the low-pressure EGR passage and for changing a cross-sectional area thereof; a high-pressure EGR passage connecting the exhaust passage upstream of the turbine to the intake passage downstream of the intercooler; a high-pressure EGR valve disposed in the high-pressure EGR passage and for changing a cross-sectional area thereof; a valve control device for controlling openings of the low-pressure and high-pressure EGR valves; and a gear range detector for detecting a gear range of a transmission. | 04-02-2015 |
20150089942 | EXHAUST GAS RECIRCULATION CONTROL DEVICE OF ENGINE - An exhaust gas recirculation control device of an engine includes an exhaust turbocharger having a turbine disposed in an exhaust passage and a compressor disposed in an intake passage, low-pressure and high-pressure EGR passages connecting the exhaust passage downstream of the turbine to the intake passage upstream of the compressor and connecting the exhaust passage upstream of the turbine with the intake passage downstream of the compressor, respectively, low-pressure and high-pressure EGR valves disposed in the low-pressure and high-pressure EGR passages and for changing cross-sectional areas thereof, respectively, a valve control device for controlling openings of the low-pressure and high-pressure EGR valves, a total intake gas amount detector for detecting a total intake gas amount, a fresh air amount detector for detecting a fresh air amount, and a pressure difference detector for detecting a pressure difference between the exhaust and intake passage sides of the high-pressure EGR valve. | 04-02-2015 |
20150113985 | EXHAUST GAS PURIFICATION SYSTEM FOR AN INTERNAL COMBUSTION ENGINE - The present invention discloses an exhaust gas purification system for an internal combustion engine, which is provided with: a low pressure EGR mechanism that is equipped with a low pressure EGR passage and a low pressure EGR valve; a selective reduction type catalyst that is arranged in a portion of the exhaust passage downstream; a supply device which serves to supply an ammonia derived compound to said selective reduction type catalyst; and a control unit that causes said supply device to supply the ammonia derived compound when said low pressure EGR valve is in a valve open state, makes the amount of the ammonia derived compound supplied from said supply device larger in cases where an amount of the low pressure EGR gas flowing through said low pressure EGR passage is large, in comparison with the case where it is small. | 04-30-2015 |
20150121864 | METHODS AND SYSTEMS FOR PCV FLOW ESTIMATION WITH AN INTAKE OXYGEN SENSOR - Methods and systems are provided for estimating a positive crankcase ventilation (PCV) flow based on outputs of an intake manifold oxygen sensor. For example, during engine operation when exhaust gas recirculation (EGR) and fuel canister purge are disabled, PCV flow may be estimated based on a difference between a first output of the sensor with boost enabled and a second output of the sensor with boost disabled. Then, during subsequent operation wherein EGR is enabled, PCV flow is enabled, and purge is disabled, a third output of the sensor may be adjusted based on the estimated PCV flow. | 05-07-2015 |
20150128587 | SYSTEM AND METHOD FOR REDUCING ENGINE KNOCK - A method includes operating a spark ignition engine and flowing low pressure exhaust gas recirculation (EGR) from an exhaust to an inlet of the spark ignition engine. The method includes interpreting a parameter affecting an operation of the spark ignition engine, and determining a knock index value in response to the parameter. The method further includes reducing a likelihood of engine knock in response to the knock index value exceeding a knock threshold value. | 05-14-2015 |
20150292424 | METHOD AND SYSTEM FOR CONTROL OF AN EGR VALVE DURING LEAN OPERATION IN A BOOSTED ENGINE SYSTEM - Methods and systems are provided for reducing EGR estimation errors during lean engine operating conditions. During lean engine operation, EGR is disabled if the estimated exhaust air-fuel ratio becomes leaner than a lean threshold. The lean threshold is adjusted based on an upper limit of EGR errors that may be tolerated by the engine at a given engine speed and load. | 10-15-2015 |
20150292443 | SYSTEM AND METHOD FOR TURBOCHARGER COMPRESSOR SURGE CONTROL - An internal combustion engine having intake and exhaust manifolds, a turbocharger with a compressor, and at least one of: an exhaust gas recirculation (EGR) valve and a variable geometry turbine (VGT). The system further includes a control computer configured to determine at least one of torque demand, pressure across the compressor, and pressure gradient ratio between the exhaust manifold and the intake manifold relative to one of exhaust manifold pressure, intake manifold pressure, and 1. The control computer performs at least one of: closing the EGR valve in response to the determined at least one of torque demand, pressure across the compressor, and pressure gradient ratio, and lessening restriction provided by the variable geometry turbine responsive to the determined at least one of torque demand, pressure across the compressor, and pressure gradient between the exhaust manifold and the intake manifold. | 10-15-2015 |
20150292445 | MIXER FOR DEDICATED EXHAUST GAS RECIRCULATION SYSTEMS - Systems, methods and techniques for exhaust gas recirculation are provided. The system includes mixing exhaust flow from at least one cylinder of an engine with air in an air intake system prior to combustion. The exhaust flow from the at least one cylinder is accumulated prior to mixing and distributed into the intake air system in a controlled manner. | 10-15-2015 |
20150300297 | EXHAUST SYSTEM FOR SPARK-IGNITED GASEOUS FUEL INTERNAL COMBUSTION ENGINE - An internal combustion engine system includes a spark-ignited internal combustion engine powered by a gaseous fuel. The engine system also includes an air intake in air providing communication with the internal combustion engine. Further, the engine system includes an exhaust system in exhaust gas receiving communication with the internal combustion engine. The exhaust system includes a methane oxidation catalyst through which at least a portion of the exhaust gas flows and an exhaust gas recirculation line in exhaust gas providing communication with the air intake. | 10-22-2015 |
20150308332 | APPARATUS AND METHOD OF CONTROLLING ENGINE SYSTEM - A control apparatus of an engine system, the engine system including an engine, a VGT configured to control a boost pressure applied to the engine by adjust an angle of a vane provided in a turbine, and an EGR valve configured to control an amount of a recirculated exhaust gas, includes a target value determiner determining a target boost pressure and a target intake air amount based on an engine speed and a fuel injection amount, an EGR valve controller calculating a target EGR mass flow rate based on the target boost pressure and the target intake air amount and determining an EGR valve opening rate, and a turbocharger controller performing a sliding mode control using the calculated target EGR mass flow rate as a parameter to calculate a target compressor power and a target turbocharger mass flow rate and determining a turbine vane opening rate. | 10-29-2015 |
20150330333 | UNBURNED FUEL VENTING IN INTERNAL COMBUSTION ENGINES - An internal combustion engine is disclosed. The engine may have a cylinder that defines a combustion chamber for combusting an air/fuel mixture. The engine may also have a piston reciprocally movable within the cylinder between a top dead center (TDC) and a bottom dead center (BDC). The piston may have an uppermost piston ring configured to sealingly contact the cylinder. The engine may have an annular crevice facing the combustion chamber. The crevice may be defined by the cylinder, the piston, and the uppermost piston ring. The engine may also have a flow channel fluidly connected to the combustion chamber. The flow channel may direct unburned air/fuel-mixture out of the combustion chamber. The at least one flow channel may be fluidly connected to the annular crevice for a crank angle range of about 85° to 95° and about 265° to 275° after the top dead center (TDC). | 11-19-2015 |
20150345433 | ENGINE SYSTEMS AND METHODS FOR OPERATING AN ENGINE - A unique engine system has an engine with a dedicated exhaust gas recirculation cylinder, an EGR system that receives exhaust gas from the dedicated cylinder, and a turbocharger having turbine inlet ports in fluid communication with other engine cylinders via a plurality of exhaust passages. At least two of the exhaust passages are substantially isolated from each other. Other embodiments include apparatuses, systems, devices, hardware, methods, and combinations for engines and engine systems. | 12-03-2015 |
20150354483 | MULTIVARIABLE LOW-PRESSURE EXHAUST GAS RECIRCULATION CONTROL - Methods and systems are provided for adjusting a LP-EGR valve and an LP intake throttle to provide a desired LP-EGR flow rate while maintaining a minimum differential pressure. In one example, a method for a turbocharged engine method comprises: responsive to a differential between intake and exhaust pressure below a threshold, adjusting a LP-EGR valve while adjusting a LP intake throttle to regulate a LP-EGR flow rate and the differential to respective setpoints; and responsive to the differential above the threshold, saturating the LP-EGR valve to minimize the differential while actuating the throttle to regulate the flow rate to its setpoint. In this way, control of the LP-EGR system may be more robust to disturbances at very low differential pressures, require less actuator movement, and increase fuel economy. | 12-10-2015 |
20150369146 | ENGINE SPEED CONTROL SYSTEMS AND METHODS - A target engine speed module selectively sets M target engine speeds for M future times, respectively, based on one of increasing and decreasing an engine speed. A prediction module, based on a set of possible target values for the M future times and a model of an engine, determines M predicted engine speeds for the M future times, respectively. A cost module determines a cost for the set of possible target values based on comparisons of the M predicted engine speeds for the M future times with the M target engine speeds for the M future times, respectively. A selection module, based on the cost, selects the set of possible target values from a group including the set of possible target values and N other sets of possible target values, and sets target values based on the selected set of possible target values. An actuator module controls an engine actuator based on a first one of the target values. | 12-24-2015 |
20150377190 | MOTOR VEHICLE AND AIR FILTER BOX - A motor vehicle is provided which has an engine, an inlet air section for supplying the engine with inlet air, a compressor arranged in the inlet air section and a vortex generator arranged in the inlet air section upstream of the compressor. The vortex generator has at least one guide vane for generating a vortex in the inlet air and a vortex generator outlet having a first radius. The compressor has a compressor inlet having a second radius, which is smaller than the first radius. According to the invention, an exhaust gas recirculation line opens downstream of the vortex generator outlet and upstream of the compressor inlet. | 12-31-2015 |
20160003196 | QUAD LAYER PASSAGE VARIABLE GEOMETRY TURBINE FOR TURBOCHARGERS IN EXHAUST GAS RECIRCULATION ENGINES - A variable geometry turbine for turbochargers in exhaust gas recirculation engines incorporates a turbine housing having an exhaust inlet with a first side receiving exhaust from cylinders having exhaust gas recirculation (EGR) and a second side receiving exhaust from non-EGR cylinders. The first side has a first EGR-driving passage and a second EGR-driving passage and the second side having a first non-EGR-driving passage and a second non-EGR-driving passage. A first control valve is associated with the second EGR-driving passage and a second control valve is associated with the second non-EGR-driving passage. A controller is adapted to control the first and second control valves. | 01-07-2016 |
20160017783 | METHOD OF REDUCING WARM-UP TIME OF AN AFTERTREATMENT DEVICE AND A VEHICLE SYSTEM FOR THE SAME - A method of reducing warm-up time of an aftertreatment device and a vehicle system for the same are disclosed. Fuel is injected into a plurality of cylinders of an internal combustion engine which is controlled, via a controller. The fuel in a first subset of the plurality of cylinders is combusted to produce a first exhaust product having excess fuel. The fuel in a second subset of the plurality of cylinders is combusted to produce a second exhaust product having excess air. The first exhaust product is expelled through a turbocharger and a valve is actuated to route the second exhaust product away from a dedicated EGR system and downstream from the turbocharger. The excess fuel of the first exhaust product and the excess air of the second exhaust product are mixed downstream from the turbocharger to create an exothermic reaction that produces heat to warm up the aftertreatment device. | 01-21-2016 |
20160025044 | ASYMMETRIC DOUBLE-ENTRY TURBINE - An asymmetric double-entry turbine is provided with a turbine housing that includes a first volute, a second volute and a turbine receiving bore. The first volute has a first exhaust gas inlet and a first exhaust gas outlet. The second volute has a second exhaust gas inlet and a second exhaust gas outlet. The turbine receiving bore is in fluid communication with the first exhaust gas outlet and the second exhaust gas outlet for conducting a flow of exhaust gas from the first exhaust gas outlet and the second exhaust gas outlet out in an axial direction. The first exhaust gas outlet has an angular opening amount of more than 180 degrees around the turbine receiving bore. The second exhaust gas outlet has an angular opening amount of less than 180 degrees around the turbine receiving bore. | 01-28-2016 |
20160025046 | EGR CONTROL METHOD OF INTERNAL COMBUSTION ENGINE - The invention has an object to control an EGR amount accurately in transient time. An ECU switches EGR control to the one-valve EGR control and the both-valve EGR control based on a request EGR amount. When the EGR control is switched to the one-valve EGR control from the both-valve EGR control, an EGR valve of one bank is closed first. Next, during a time period until an opening degree restriction time period elapses after the EGR valve is closed, an opening degree of an EGR valve of the other bank is restricted to be smaller than a one-valve target opening degree. Subsequently, when the opening degree restriction time period elapses, restriction of the opening degree of the EGR valve is cancelled, and the opening degree of the EGR valve is changes to the one-valve target opening degree. | 01-28-2016 |
20160061126 | CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE - An internal combustion engine of the present invention is an internal combustion engine including a supercharger and an EGR device. Further, the internal combustion engine has an ISC passage that connects an upstream side and a downstream side of a throttle valve in an intake passage, and an ISC valve that regulates an amount of air that flows in the ISC passage. A control device of the present invention performs valve opening control that makes an opening degree of the ISC valve an opening degree larger than a reference opening degree when request torque required by the internal combustion engine is smaller than estimated torque that can be generated in the internal combustion engine, and prohibits opening of an EGR valve of the EGR device during execution of the valve opening control. | 03-03-2016 |
20160090928 | EXHAUST CONTROL APPARATUS FOR ENGINE - An exhaust control apparatus for an engine is provided. The apparatus includes a turbocharger, a high-pressure exhaust gas recirculation (EGR) device, a low-pressure EGR device, and a flap controller. The turbocharger includes a turbine, a compressor, and movable flaps, and rotates the turbine by exhaust gas to drive the compressor so as to boost intake air. The high-pressure EGR device recirculates, within a first engine operating range, the exhaust gas from a position of an exhaust passage upstream of the turbine to a position of an intake passage downstream of the compressor. The low-pressure EGR device recirculates, within a second engine operating range, the exhaust gas from a position of the exhaust passage downstream of the turbine to a position of the intake passage upstream of the compressor. The flap controller controls flap openings. | 03-31-2016 |
20160090944 | COOLING SYSTEM FOR ENGINE - A cooling system for an engine is provided. The cooling system includes an EGR device including an EGR passage for recirculating exhaust gas into an intake passage, an EGR valve for adjusting a flow rate of the recirculating exhaust gas, and an EGR cooler for cooling the recirculating exhaust gas, an EGR valve controller for controlling the EGR valve, coolant flow paths including a first flow path and a second flow path and where coolant circulates, a coolant pump for circulating coolant within the coolant flow paths, a flow rate control valve for adjusting a flow rate of the coolant through the second flow path, a temperature detector for detecting a coolant temperature within the first flow path, and a valve controller for adjusting a flow rate control valve opening based on the detected temperature. | 03-31-2016 |
20160097350 | HIGH-ENTHALPY FLUID INJECTION INTEGRATED WITH SPARK PLUG - Disclosed is a turbocharged internal combustion piston engine system that includes a waste-heat recovery system. The waste-heat recovery system involves injecting heated water into the cylinders during combustion to increase engine power and efficiency and to reduce emissions. The engine can be a spark or compression ignition type of engine, and can utilize fuels including but not limited to diesel, natural gas, gasoline, and ethanol. The engine also includes a turbocharger that utilizes a turbine in the exhaust gas flow to provide power to a compressor in the intake air flow to pressurize the intake air and provide additional charge flow to the engine to increase engine output. | 04-07-2016 |
20160108802 | INTERNAL COMBUSTION ENGINE WITH EXHAUST-GAS TURBOCHARGING AND EXHAUST-GAS RECIRCULATION - Methods and systems are provided for a compressor bypass passage. In one example, a method may include flowing bypassed charge air through an annular passage into an intake passage. | 04-21-2016 |
20160108860 | ENGINE SYSTEM - An engine system may include main exhaust ports fluidly communicated with each combustion chamber, main exhaust valves opening and closing each main exhaust port, a main exhaust manifold connected with the main exhaust ports, scavenge exhaust ports fluidly communicated with the each combustion chamber, scavenge valves opening and closing the each scavenge exhaust port, a scavenge manifold connected with the scavenge exhaust ports, in which at least a part of an exhaust gas passing through the scavenge manifold is re-circulated to the combustion chamber to be burned. | 04-21-2016 |
20160123281 | EXHAUST GAS RECIRCULATION AND CONTROL WITH TWIN SCROLL TURBINES - Systems and methods for internal combustion engine operation with exhaust gas recirculation and turbocharging are disclosed. The systems include an exhaust gas recirculation loop for recirculating exhaust gas flow from a first portion of the cylinders of the engine into an intake system prior to combustion. The system further includes a turbine with first and second inlets for receiving exhaust gas flows from respective first and second parts of the exhaust gas of the remaining portion of the cylinders. | 05-05-2016 |
20160131053 | METHOD AND SYSTEM FOR KNOCK CONTROL - Methods and systems are provided for improving engine knock tolerance, in particular when rapidly ramping in LP-EGR from low levels of EGR. Until a desired LP-EGR rate is achieved, fuel may be delivered as a split injection with at least an intake stroke injection and a compression stroke injection to compensate for the transport delay in EGR filling the intake system. Subsequently, single fuel injection may be resumed. | 05-12-2016 |
20160131089 | VARIABLE GEOMETRY TURBOCHARGER FEED FORWARD CONTROL SYSTEM AND METHOD - A variable geometry turbocharger control method and system for an engine air system with a variable geometry turbocharger having adjustable vanes. The method includes monitoring engine parameters; generating engine state estimates using an engine observer model; generating measured engine states based on the monitored engine parameters; computing observer error based on the differences between the measured and modeled engine states; generating model correction factors; and generating commands for adjusting the vane positions of the variable geometry turbocharger. An inverse engine observer model can generate the desired variable geometry turbocharger vane positions. The method can include generating feedback actuator commands in generating the desired variable geometry turbocharger vane positions. The correction factors can include fresh air, EGR and/or turbine mass flow correction factors. | 05-12-2016 |
20160138499 | EGR FOR A TWO-STROKE CYCLE ENGINE WITHOUT A SUPERCHARGER - A two-stroke cycle, turbo-driven, opposed-piston engine with one or more ported cylinders and uniflow scavenging has no supercharger. The engine includes a high pressure EGR loop and a pump in the EGR loop to boost the pressure of the recirculated exhaust products. | 05-19-2016 |
20160138532 | EXHAUST HEAT RECOVERY SYSTEM - An exhaust heat recovery system may include an exhaust pipe through which exhaust gas exhausted from an engine moves, a main channel through which a working fluid absorbing thermal energy from the exhaust pipe moves, a turbine rotated by the working fluid exhausted from the main channel to generate energy, an exhaust gas recirculation (EGR) line circulating a portion of the exhaust gas exhausted from the engine to an intake manifold, and channel control valves disposed in the main channel and configured to control movement of the working fluid so that the exhaust gas moving along the EGR line and the working fluid moving along the main channel exchange heat with each other. | 05-19-2016 |
20160169130 | SYSTEM FOR CONTROLLING ENGINE USING VARIABLE VALVE LIFT AND METHOD THEREOF | 06-16-2016 |
20160169131 | METHOD AND SYSTEM FOR BINARY FLOW TURBINE CONTROL | 06-16-2016 |
20160169165 | TURBOCHARGING SYSTEM FOR USE WITH INTERNAL COMBUSTION ENGINE | 06-16-2016 |
20160169167 | Internal Combustion Engine for a Motor Vehicle, and Method for Operating Such an Internal Combustion | 06-16-2016 |
20160177815 | Exhaust Nozzle Tip Device and System | 06-23-2016 |
20160177887 | EGR SYSTEM WITH PARTICLE FILTER FOR A GASOLINE ENGINE | 06-23-2016 |
20160252026 | METHOD AND SYSTEM FOR IMPROVED DILUTION TOLERANCE | 09-01-2016 |
20160252027 | DIFFERENTIAL FUELING BETWEEN DONOR AND NON-DONOR CYLINDERS IN ENGINES | 09-01-2016 |
20170234280 | COMBUSTION SYSTEM WITH AN ION TRANSPORT MEMBRANE ASSEMBLY AND A METHOD OF USING THEREOF | 08-17-2017 |
20190145357 | EGR CONTROL DEVICE | 05-16-2019 |
20190145360 | EXHAUST GAS RECIRCULATION AND CONTROL WITH TWIN SCROLL TURBINES | 05-16-2019 |