CUMMINS INTELLECTUAL PROPERTY, INC. Patent applications |
Patent application number | Title | Published |
20160086132 | SYSTEM AND METHOD OF DETERMINING FREIGHT/LOAD DISTRIBUTION FOR MULTIPLE VEHICLES - Systems and methods of vehicle freight/load distribution are provided to assist in determining optimal freight distribution. Although it is standard practice to fill each vehicle to its maximum limit, due to the non-linear nature of engine fueling maps (that is, fueling maps vary non-linearly as a function of torque and speed), the optimal distribution may not be obtained by the standard practice. Finding a solution for the optimal freight distribution may also need to account for the cost of fueling and operator costs, particularly if the situation involves multiple vehicles not filled to capacity. The benefit is increased freight efficiency in transporting cargo from source to destination amongst a fleet of vehicles. | 03-24-2016 |
20160061059 | SYSTEM AND METHOD FOR REGULATING EGR COOLING USING A RANKINE CYCLE - This disclosure relates to a waste heat recovery (WHR) system and method for regulating exhaust gas recirculation (EGR) cooling, and more particularly, to a Rankine cycle WHR system and method, including a recuperator bypass arrangement to regulate EGR exhaust gas cooling for engine efficiency improvement and thermal management. This disclosure describes other unique bypass arrangements for increased flexibility in the ability to regulate EGR exhaust gas cooling. | 03-03-2016 |
20160040615 | SYSTEM AND METHOD OF DPF PASSIVE ENHANCEMENT THROUGH POWERTRAIN TORQUE-SPEED MANAGEMENT - This disclosure provides a method and system for determining recommendations for vehicle operation that reduce soot production in view of a diesel particulate filter (DPF) of an exhaust aftertreatment system. Recommendations generated can reduce excessive particulate matter (PM) production during transient engine events and provide for operating conditions favorable for passive regeneration. In this way, less frequent active regeneration of the DPF is needed and/or more opportunities are provided for passive regeneration. The system and method can utilize location and terrain information to anticipate and project a window of operation in view of reducing soot production and soot loading of the DPF, or provide the operator with instruction when such opportunities are present or will soon be encountered. | 02-11-2016 |
20150369108 | MULTI-LEG EXHAUST AFTERTREATMENT SYSTEM AND METHOD - An exhaust aftertreatment system for treating exhaust flow from an internal combustion engine, and associated method, allows for independent control of exhaust flow through plural exhaust legs of the exhaust aftertreatment system. The independent control of exhaust flow is carried out by adjusting a valve positioned in each the exhaust legs based on a value of a signal generated by a flow measurement device positioned along at least one of the exhaust legs. The valves can be adjusted to force a target flow in a exhaust leg, relative flow among exhaust legs, exhaust temperature in an exhaust leg, exhaust backpressure and/or imbalance within the exhaust legs. | 12-24-2015 |
20150226091 | RANKINE CYCLE WASTE HEAT RECOVERY SYSTEM - A Rankine cycle waste heat recovery system associated with an internal combustion engine is in a configuration that enables handling of exhaust gas recirculation (EGR) gas by using the energy recovered from a Rankine cycle waste heat recovery system. The system includes a control module for regulating various function of the internal combustion engine and its associated systems along with the Rankine cycle waste heat recovery system. | 08-13-2015 |
20150096543 | RANKINE CYCLE WASTE HEAT RECOVERY SYSTEM AND METHOD WITH IMPROVED EGR TEMPERATURE CONTROL - A waste heat recovery (WHR) system and method for regulating exhaust gas recirculation (EGR) cooling is described. More particularly, a Rankine cycle WHR system and method is described, including an arrangement to improve the precision of EGR cooling for engine efficiency improvement and thermal management. | 04-09-2015 |
20150040541 | REVERSIBLE WASTE HEAT RECOVERY SYSTEM AND METHOD - A waste heat recovery (WHR) system operates in a reverse mode, permitting using the WHR system to transfer heat to the exhaust gas of an internal combustion engine. In another configuration, a WHR system may operate in two modes. The first mode removes heat from exhaust gas of an engine to perform useful work. The second mode transfers heat to the exhaust gas. The benefit of this flexible system is that a WHR system is adaptable to rapidly heat exhaust gas at startup and during other conditions where the temperature of the exhaust gas is less than a predetermined operating range. Because of the ability to rapidly warm engine exhaust gas, an exhaust gas receiving system, such as an EGR or an aftertreatment system, may function to reduce the emissions of the engine more quickly. Because this system is reversible, it retains the capability of a conventional WHR system. | 02-12-2015 |
20140345275 | RANKINE CYCLE SYSTEM AND METHOD - A Rankine cycle waste heat recovery system uses a receiver with a maximum liquid working fluid level lower than the minimum liquid working fluid level of a sub-cooler of the waste heat recovery system. The receiver may have a position that is physically lower than the sub-cooler's position. A valve controls transfer of fluid between several of the components in the waste heat recovery system, especially from the receiver to the sub-cooler. The system may also have an associated control module. | 11-27-2014 |
20140336887 | SYSTEM AND METHOD OF SPEED-BASED DOWNSPEED COASTING MANAGEMENT - A velocity profile can be used in conjunction with vehicle operating condition data to determine a gear shift schedule that mitigates the amount of service brake effort required to slow a vehicle by making optimal use of engine speed, friction and engine brakes. The gear shift point drives the engine to a higher operating speed and greater frictional torque, slowing the vehicle, which can then coast to a desired speed. The gear shift point can be timed to minimize fuel consumption during the maneuver. Thus, a vehicle downshift event is created based on the transmission gear recommendation. The benefit is increased freight efficiency in transporting cargo from source to destination by minimizing fuel consumption and maintaining drivability. | 11-13-2014 |
20140260209 | DECOMPOSITION CHAMBER - According to one embodiment, described herein is an apparatus for decomposing diesel exhaust fluid into ammonia for an internal combustion engine (ICE) system having a selective catalytic reduction system. The apparatus includes an outlet cover, an inlet cover coupled to the outlet cover, and a support plate disposed between the outlet cover and the inlet cover. The support plate forms an outlet channel with the outlet cover and an inlet channel with the inlet cover. The inlet channel is fluidly coupled to the outlet channel. Additionally, the inlet channel may be adjacent to the outlet channel. | 09-18-2014 |
20140144132 | CHARGE AIR COOLER ASSEMBLY - A charge air cooler assembly for an internal combustion engine is described. A housing of the charge air cooler assembly includes a dividing wall that separates flow after the charge air cooler into two separate flow paths. | 05-29-2014 |
20140053816 | GASEOUS FUEL AND INTAKE AIR MIXER FOR INTERNAL COMBUSTION ENGINE - A gaseous fuel mixer for an internal combustion engine includes a mixer body and a mixer element supported in a mixer passage formed in the mixer body. The gaseous fuel mixer attaches to an intake manifold at a first end and receives intake air at a second end. A distal end of the mixer element accepts gaseous fuel from a manifold passage extending from a port positioned in the intake manifold. The gaseous fuel flows through the mixer element and then through a plurality of openings formed in an exposed proximate end of the mixer element. The gaseous fuel mixes with the intake air, and the mixture of intake air and gaseous fuel flows from the second end of the mixer body to the first end of the mixer body and then to the intake manifold. | 02-27-2014 |
20140053815 | GASEOUS FUEL MIXER FOR INTERNAL COMBUSTION ENGINE - A gaseous fuel mixer for an internal combustion engine includes a frustoconical cone and an outlet element extending from the frustoconical cone at an interior portion of the frustoconical cone. The outlet element and the frustoconical cone are located within a mixer passage of an intake system. The mixer passage has an internal diameter. The outlet element includes a plurality of transverse openings that connect a fuel passage formed within the outlet element to the interior portion of the frustoconical cone. The height and diameter of the frustoconical cone and the internal diameter of the passage form specific ratios that provide for uniform mixing of intake air and gaseous fuel prior to the mixture flowing into an intake manifold of the engine. | 02-27-2014 |
20140052353 | Supervisory Thermal Management System and Method for Engine System Warm up and Regeneration - This disclosure provides a thermal management system and method that can recommend operational behavior to an operator of an engine system to optimize fuel economy over a period of time in which a components of the engine system is in a warm up and/or regeneration state. In one representative embodiment, the expected temperature change of the engine component at a later time is determined based on inefficient operation of the engine, such as a transmission down shift resulting in higher engine speed and lower engine torque, and the expected temperature change of the engine component resulting from operating the engine under current conditions or expected conditions at that later time is determined. A determination is made as to whether the inefficient engine operation is the optimal operation in view of fuel economy and a recommendation is generated for the operator based if optimal operation is determined. | 02-20-2014 |
20140032085 | SYSTEM AND METHOD OF AUGMENTING LOW OIL PRESSURE IN AN INTERNAL COMBUSTION ENGINE - A system and method of providing supplementary oil flow to an oil circuit of an internal combustion engine is described. The primary oil supply is from a mechanical oil pump. The supplementary oil supply is provided using a control system, one or more sensors, and an electrical oil pump. The system is beneficial in circumstances where the mechanical oil pump provides insufficient oil flow, including during engine shutdown. | 01-30-2014 |
20140014074 | VENTED PRESSURE RELIEF VALVE FOR AN INTERNAL COMBUSTION ENGINE FUEL SYSTEM - A fuel pressure relief valve is positioned along a fuel circuit of an internal combustion engine. The pressure relief valve includes a valve body, a first plunger positioned within the valve body, a second plunger positioned within the first plunger, and a valve plug securing the first and second plungers in the valve body. A spring is positioned between the valve plug and the second plunger. Fuel leakage into the pressure relief valve causes the pressure relief valve to lift undesirably in the absence of excessive fuel pressure. The undesirable lifting undesirably affects the operation of the fuel rail and causes wear and shortened life of the pressure relief valve. The first plunger has at least one relief passage or groove located on an exterior surface, relieving the undesirable pressure buildup from a chamber formed between the valve body and the first plunger, eliminating undesirable liftoff events. | 01-16-2014 |
20140013743 | REVERSIBLE WASTE HEAT RECOVERY SYSTEM AND METHOD - A waste heat recovery (WHR) system operates in a reverse mode, permitting using the WHR system to transfer heat to the exhaust gas of an internal combustion engine. In another configuration, a WHR system may operate in two modes. The first mode removes heat from exhaust gas of an engine to perform useful work. The second mode transfers heat to the exhaust gas. The benefit of this flexible system is that a WHR system is adaptable to rapidly heat exhaust gas at startup and during other conditions where the temperature of the exhaust gas is less than a predetermined operating range. Because of the ability to rapidly warm engine exhaust gas, an exhaust gas receiving system, such as an EGR or an aftertreatment system, may function to reduce the emissions of the engine more quickly. Because this system is reversible, it retains the capability of a conventional WHR system. | 01-16-2014 |
20140007575 | SPLIT RADIATOR DESIGN FOR HEAT REJECTION OPTIMIZATION FOR A WASTE HEAT RECOVERY SYSTEM - A cooling system provides improved heat recovery by providing a split core radiator for both engine cooling and condenser cooling for a Rankine cycle (RC). The cooling system includes a radiator having a first cooling core portion and a second cooling core portion positioned in a downstream direction of forced cooling air from the first cooling core portion, and an engine cooling loop including an engine coolant return line fluidly connected to an inlet of the second cooling core portion, and an engine coolant feed line connected to an outlet of the second cooling core portion. A condenser of an RC has a cooling loop including a condenser coolant return line fluidly connected to an inlet of the first cooling core portion and a condenser coolant feed line fluidly connected an outlet of the first cooling core portion. A valve is provided between the engine cooling loop and the condenser cooling loop adjustably control the flow of coolant in the condenser cooling loop into the engine cooling loop. The cooling system includes a controller communicatively coupled to the valve and adapted to determine a load requirement for the internal combustion engine and adjust the valve in accordance with the engine load requirement. | 01-09-2014 |
20130340703 | CYLINDER HEAD FOR INTERNAL COMBUSTION ENGINE - Rib configurations for increasing the structural efficiency of a cylinder head, which relates to a peak combustion pressure capability of the cylinder head. In addition to increasing peak combustion pressure, the rib configurations may also improve sealing of the cylinder head and may improve the durability of an associated cylinder head gasket. | 12-26-2013 |
20130319930 | INTERFERENCE FIT FOR HIGH PRESSURE FUEL SYSTEM COMPONENT - This disclosure provides an edge filter assembly for delivering high pressure or pressurized fuel to a cylinder an internal combustion engine and a high pressure connector and edge filter assembly that provides a pressurized fluid connection between a high pressure fuel line and an inlet of a fuel injector. The edge filter assembly and high pressure connector and edge filter assembly each have a geometric feature that can provide increased retention force to an interference fit of the edge filter with the assembly. | 12-05-2013 |
20130270369 | FUEL INJECTOR - A fuel injector is provided that includes various precise configuration parameters, including dimensions, shape and/or relative positioning of fuel injector features, resulting in improved efficiency of fuel flow through the fuel injector. | 10-17-2013 |
20130220274 | CONTROL SYSTEM FOR DUAL FUEL ENGINES - A control system for operation of a dual fuel engine is disclosed wherein the engine is operated by a liquid fuel and a gaseous fuel at varying loads and engine speeds. The control system has a first sensor and a second sensor for sensing intake manifold pressures of the engine and pressures of the liquid fuel respectively. A speed sensing means is provided to generate signals corresponding to engine speeds and varying loads. A liquid fuel actuator and a gaseous fuel actuator are provided to induct the liquid fuel and the gaseous fuel into the engine respectively. | 08-29-2013 |
20130167806 | PISTON AND COMBUSTION CHAMBER - A piston and an engine are provided that includes various precise configuration parameters, including dimensions, shape and/or relative positioning of the combustion chamber features, resulting in a combustion process that yields improved mixing of fuel and intake air and increased uniformity of load on the engine pistons. The piston provides a piston bowl with a concave curvilinear portion that may be semi-spherical and extends inwardly to a depth; an angled surface extends inwardly from the crown surface to intersect the concave curvilinear portion at an edge at a depth; and a curved surface that extends inwardly from the crown surface to intersect the concave curvilinear portion at a tangent at a depth. The angled surface may be part of a frusto-conical surface that may extend from both sides of the angled surface to an area proximate the curved surface. | 07-04-2013 |
20130139784 | PRECHAMBER DEVICE FOR INTERNAL COMBUSTION ENGINE - This disclosure relates to an improved prechamber device for an internal combustion engine. The prechamber device is positioned adjacent to a combustion chamber. The improved prechamber device is configured to improve removal of heat from the prechamber device, particularly in the area adjacent to the combustion chamber. | 06-06-2013 |
20130133630 | CHARGE AIR COOLER ASSEMBLY - A charge air cooler assembly for an internal combustion engine is described. A housing of the charge air cooler assembly includes a dividing wall that separates flow after the charge air cooler into two separate flow paths. | 05-30-2013 |
20130133603 | ENGINE COMPONENT SEAL ASSEMBLY AND METHOD OF SEALING A COOLANT PASSAGE FROM AN ENGINE COMPONENT - An engine component seal assembly and method of sealing a coolant passage from an engine component are provided. The seal assembly includes a sealing sleeve sized and dimensioned to slip fit into an engine component mounting bore and a retaining ring sized and dimensioned to be axially inserted into the sleeve. The ring contacts the sleeve and applies a radial force sufficient to create an interference fit and to move or yield an interface portion of the sleeve radially outward into sealing abutment against a wall forming the mounting bore to create a secure and reliable annular fluid seal. | 05-30-2013 |
20130103174 | MEASUREMENT SYSTEMS ANALYSIS SYSTEM AND METHOD - This disclosure provides a method and system for measurement system analysis (MSA) that present a structured and effective way of performing an MSA. The MSA system and method involves determination of a category of MSA for a measurement system based on an application of the measurement system, a quantification of measurement variation, calculation of a decision rule value based on the quantified measurement variation and a decision rule associated with the determined category, a determination of whether the measurement system is capable of performing MSA for the category based on a comparison of the calculated decision rule value and a decision rule threshold value, and applying a measurement system determined as capable for performing MSA to manage. | 04-25-2013 |
20130026257 | FUEL INJECTOR HAVING A PIEZOELECTRIC ACTUATOR AND A SENSOR ASSEMBLY - A fuel injector includes a piezoelectric actuation mechanism and a sensor configuration to measure the condition of the actuation mechanism as well as an associated fuel rail. The sensor configuration includes a piezoelectric sensor with an output signal with significantly reduced distortion that accurately reflects control signals provided to the piezoelectric actuation mechanism. | 01-31-2013 |
20130019847 | RANKINE CYCLE WASTE HEAT RECOVERY SYSTEM AND METHOD WITH IMPROVED EGR TEMPERATURE CONTROL - A waste heat recovery (WHR) system and method for regulating exhaust gas recirculation (EGR) cooling is described. More particularly, a Rankine cycle WHR system and method is described, including an arrangement to improve the precision of EGR cooling for engine efficiency improvement and thermal management. | 01-24-2013 |
20120304639 | LEAN BURN ACTIVE IGNITION ENGINE WITH AFTERTREATMENT SYSTEM AND METHOD - An engine system including a lean burn active ignition engine and aftertreatment system, and a method for operating such a system, are disclosed. In a representative embodiment, the lean burn active ignition engine includes an engine block including plural cylinders, an intake manifold adapted to provide charge air to the cylinders, an exhaust manifold, an active ignition source; and fuel and air handling systems that provide fuel/charge air mixture such that an air-to-fuel ratio of the mixed charge air and fuel in each of the engine cylinders is substantially greater than a stoichiometric quantity to achieve a lean burn condition. An exhaust gas aftertreatment system is fluidly coupled to an outlet of the exhaust manifold and includes an oxidation-reduction catalyst, and a selective catalytic reduction (SCR) catalyst fluidly coupled to the oxidation-reduction catalyst and positioned downstream of the oxidation-reduction catalyst. | 12-06-2012 |
20120240883 | INTERNAL COMBUSTION ENGINE HAVING IMPROVED COOLING ARRANGEMENT - An improved cooling fluid passage configuration provides for uniformity of cooling about the entire periphery of a cylinder liner of an internal combustion engine in addition to improved cooling by increasing the flow in an upper water jacket of a split water jacket design. The cooling fluid passage configuration also provides a reduced pressure drop between a cylinder liner cooling fluid inlet and a cylinder head cooling fluid outlet when compared to conventional designs with a single head feed line, permitting use of a smaller cooling fluid pump and leading to increased efficiency of the engine. | 09-27-2012 |
20120239588 | SYSTEM AND METHOD OF DETERMINING FREIGHT/LOAD DISTRIBUTION FOR MULTIPLE VEHICLES - Systems and methods of vehicle freight/load distribution are provided to assist in determining optimal freight distribution. Although it is standard practice to fill each vehicle to its maximum limit, due to the non-linear nature of engine fueling maps (that is, fueling maps vary non-linearly as a function of torque and speed), the optimal distribution may not be obtained by the standard practice. Finding a solution for the optimal freight distribution may also need to account for the cost of fueling and operator costs, particularly if the situation involves multiple vehicles not filled to capacity. The benefit is increased freight efficiency in transporting cargo from source to destination amongst a fleet of vehicles. | 09-20-2012 |
20120234285 | PISTON FOR INTERNAL COMBUSTION ENGINE - A piston and an engine are provided that includes various precise configuration parameters, including dimensions, shape and/or relative positioning of combustion chamber features. More particularly, configuration parameters for a piston crown and a piston bowl located within the piston crown are provided. The piston bowl configuration results in a combustion process that yields decreased heat transfer to a cylinder head of the internal combustion engine as well as reduced NOx emissions. | 09-20-2012 |
20120234268 | ENGINE ARRANGEMENT FOR ENHANCED COOLING - A cylinder liner and piston configuration for an internal combustion engine includes features for improving the cooling of the piston. Specific ratios and dimensions are included to optimize the features of the cylinder liner and piston. Also included are unique piston features that assist in achieving some of the specified dimensions and ratios. | 09-20-2012 |
20120227538 | CONNECTING ROD WITH OFFSET CAP HOLES FOR INTERNAL COMBUSTION ENGINE - A connecting rod including a connecting rod body and a cap attached to the connecting rod body by a plurality of bolts. The connecting rod body includes a shank having a centerline. Two of the bolts are positioned at a first distance from the centerline and two of the bolts are positioned at a second distance from the centerline that is greater than the first distance. The plurality of bolts may be disposed symmetrically about a centroid of a planar face of the connecting rod. | 09-13-2012 |
20120223487 | ENGINE WITH FLUID PASSAGE SEAL ASSEMBLY - This disclosure relates to an interface between an engine block and a cylinder head. The interface includes a ferrule that accommodates relative movement between the cylinder head and the engine block while maintaining sealing of fluid passages that extend between the cylinder head and the engine block. The interface thus forms a fluid passage seal assembly. | 09-06-2012 |
20120221234 | SYSTEM AND METHOD OF VEHICLE FUEL QUANTITY MANAGEMENT - Systems and methods of vehicle fuel quantity management are provided to assist in determining an optimal quantity of fuel to carry on-board a vehicle. Certain routes are sufficiently short so to not require a completely filled fuel tank to traverse. Additionally, most routes have an abundance of vehicle fueling stations that provide ample refueling opportunities, thus permitting an operator to carry less fuel than might be required to complete a route. Exemplary embodiments of the present disclosure balance initial fuel loading and fuel stops to optimize the amount of freight weight that can be carried for a given route. The benefit is increased freight efficiency in transporting cargo from source to destination while maintaining drivability. | 08-30-2012 |
20120221217 | SYSTEM AND METHOD OF CYLINDER DEACTIVATION FOR OPTIMAL ENGINE TORQUE-SPEED MAP OPERATION - This disclosure provides a system and method for determining cylinder deactivation in a vehicle engine to optimize fuel consumption while providing the desired or demanded power. In one aspect, data indicative of terrain variation is utilized in determining a vehicle target operating state. An optimal active cylinder distribution and corresponding fueling is determined from a recommendation from a supervisory agent monitoring the operating state of the vehicle of a subset of the total number of cylinders, and a determination as to which number of cylinders provides the optimal fuel consumption. Once the optimal cylinder number is determined, a transmission gear shift recommendation is provided in view of the determined active cylinder distribution and target operating state. | 08-30-2012 |
20120216777 | SYSTEM AND METHOD OF DETECTING HYDRAULIC START-OF-INJECTION - This disclosure provides system and method that can determine hydraulic start of injection (SOI) in engines using an in-cylinder pressure sensor. The system and method determine apparent heat release rate (AHRR) curve data for the cylinder from the pressure information provided by the in-cylinder pressure sensors, and the hydraulic SOI from the derivative of the AHRR curve data. The system and method provide diagnostic, control and/or compensation opportunities for fuel injector operation in high pressure fuel rail engine systems without use of expensive or complex fuel injector components. | 08-30-2012 |
20120216763 | ENGINE HAVING INTEGRATED WASTE HEAT RECOVERY - A waste heat recovery system connects a working fluid into passages formed within an internal combustion engine. The fluid passages transport the working fluid to high temperature areas of the engine, raising the temperature of the working fluid near the phase change point or above the phase change point. The heated working fluid drives an energy conversion portion located downstream from the engine. The heat absorbed by the working fluid decreases the load on an engine cooling system as well as driving an energy conversion portion, improving fuel efficiency. | 08-30-2012 |
20120216762 | RANKINE CYCLE SYSTEM AND METHOD - A Rankine cycle waste heat recovery system uses a receiver with a maximum liquid working fluid level lower than the minimum liquid working fluid level of a sub-cooler of the waste heat recovery system. The receiver may have a position that is physically lower than the sub-cooler's position. A valve controls transfer of fluid between several of the components in the waste heat recovery system, especially from the receiver to the sub-cooler. The system may also have an associated control module. | 08-30-2012 |
20120216760 | EJECTOR COOLANT PUMP FOR INTERNAL COMBUSTION ENGINE - An internal combustion engine includes a cooling fluid circuit and a pumping circuit. The pumping circuit drives an ejector pump located along the cooling fluid circuit, enabling a reduced parasitic load on the engine from pumping cooling fluid through the cooling fluid circuit. | 08-30-2012 |
20120216529 | ENGINE EXHAUST AFTERTREATMENT SYSTEM - An internal combustion engine including a two-stage turbocharger configuration is described. Located between the turbines of the two-stage turbocharger may be an oxidation catalyst and a passive NOx adsorber or an oxidation catalyst and an SCR device. An exhaust path extending from an engine body of the internal combustion engine to the second turbine of the two-stage turbocharger configuration may also include one or more hydrocarbon sources or one or more ammonia sources. A bypass valve arrangement may permit decreased flow through the first stage of the two-stage turbocharger arrangement as well as one or more of the elements positioned between the turbines of the two-stage turbocharger. | 08-30-2012 |
20120216509 | SYSTEM AND METHOD OF DPF PASSIVE ENHANCEMENT THROUGH POWERTRAIN TORQUE-SPEED MANAGEMENT - This disclosure provides a method and system for determining recommendations for vehicle operation that reduce soot production in view of a diesel particulate filter (DPF) of an exhaust aftertreatment system. Recommendations generated can reduce excessive particulate matter (PM) production during transient engine events and provide for operating conditions favorable for passive regeneration. In this way, less frequent active regeneration of the DPF is needed and/or more opportunities are provided for passive regeneration. The system and method can utilize location and terrain information to anticipate and project a window of operation in view of reducing soot production and soot loading of the DPF, or provide the operator with instruction when such opportunities are present or will soon be encountered. | 08-30-2012 |
20120210980 | ENCLOSURE FOR HIGH PRESSURE FUEL RAIL - The present disclosure provides an enclosure or containment assembly adapted to seal a high pressure fuel rail, and an engine system including such an enclosure or containment assembly. The assembly includes two portions that can sealingly engage to form an enclosure or compartment that contains the high pressure fuel rail. Fuel line connectors leading into the enclosure to ports of the high pressure fuel rail are in a sealing engagement with the enclosure to seal the high pressure fuel rail from the atmosphere and provide an enclosed low pressure region between the high pressure fuel rail and an inner surface of the enclosure. In this way, leaked fuel can be collected from the high pressure fuel lines and contained. The collected and contained leaked fuel can be channeled to a leak detector, which can trigger an alarm with detection of a leak. | 08-23-2012 |
20120210964 | VARIABLE VALVE ACTUATION SYSTEM AND METHOD USING VARIABLE OSCILLATING CAM - A high-efficiency mechanism for variable valve actuation with increased engine architecture applicability is described. The high efficiency mechanism introduces an intermediate lever having a secondary cam profile forming a variable oscillating cam between a rotating camshaft and a rocker arm. | 08-23-2012 |
20120210713 | RANKINE CYCLE WASTE HEAT RECOVERY SYSTEM - This disclosure relates to a waste heat recovery (WHR) system and to a system and method for regulation of a fluid inventory in a condenser and a receiver of a Rankine cycle WHR system. Such regulation includes the ability to regulate the pressure in a WHR system to control cavitation and energy conversion. | 08-23-2012 |
20120210697 | MULTI-LEG EXHAUST AFTER-TREATMENT SYSTEM AND METHOD - This disclosure provides an exhaust flow detection and variable dosing system and method for treating exhaust flow from an engine. The system includes first and second exhaust flow legs, a cross passage connecting these legs upstream of SCRs and a sensor positioned along the cross passage to detect at least one of differential pressure between the exhaust flow legs, and exhaust flow in the cross passage. A dosing circuit connects a dosing treatment supply to each of the exhaust flow legs at or upstream of the SCRs, and at least one dosing device positioned along the dosing circuit to control the amount of the dosing agent delivered to each exhaust leg. An electronic control unit controls the amount of a dosing agent delivered to the exhaust flow legs independently based on exhaust flows determined for each leg using at least one of the differential pressure and cross passage exhaust flow. | 08-23-2012 |
20120204542 | MULTI-LEG EXHAUST AFTERTREATMENT SYSTEM AND METHOD - An exhaust aftertreatment system for treating exhaust flow from an internal combustion engine, and associated method, allows for independent control of exhaust flow through plural exhaust legs of the exhaust aftertreatment system. The independent control of exhaust flow is carried out by adjusting a valve positioned in each the exhaust legs based on a value of a signal generated by a flow measurement device positioned along at least one of the exhaust legs. The valves can be adjusted to force a target flow in a exhaust leg, relative flow among exhaust legs, exhaust temperature in an exhaust leg, exhaust backpressure and/or imbalance within the exhaust legs. | 08-16-2012 |
20120203434 | SUPERVISORY THERMAL MANAGEMENT SYSTEM AND METHOD FOR ENGINE SYSTEM WARM UP AND REGENERATON - This disclosure provides a thermal management system and method that can recommend operational behavior to an operator of an engine system to optimize fuel economy over a period of time in which a components of the engine system is in a warm up and/or regeneration state. In one representative embodiment, the expected temperature change of the engine component at a later time is determined based on inefficient operation of the engine, such as a transmission down shift resulting in higher engine speed and lower engine torque, and the expected temperature change of the engine component resulting from operating the engine under current conditions or expected conditions at that later time is determined. A determination is made as to whether the inefficient engine operation is the optimal operation in view of fuel economy and a recommendation is generated for the operator based if optimal operation is determined. | 08-09-2012 |
20120198839 | RANKINE CYCLE WASTE HEAT RECOVERY SYSTEM - A Rankine cycle waste heat recovery system associated with an internal combustion engine is in a configuration that enables handling of exhaust gas recirculation (EGR) gas by using the energy recovered from a Rankine cycle waste heat recovery system. The system includes a control module for regulating various function of the internal combustion engine and its associated systems along with the Rankine cycle waste heat recovery system. | 08-09-2012 |
20120197504 | SYSTEM AND METHOD OF VEHICLE SPEED-BASED OPERATIONAL COST OPTIMIZATION - A vehicle speed-based operational cost optimization module provides an optimized velocity profile over a given route while also considering imposed constraints such as deviation from time targets, deviation from maximum governed speed limits, etc. Given current vehicle speed, engine state and transmission state, the present disclosure optimally manages the engine map to provide a recommended vehicle speed that optimizes fuel consumption. Exemplary embodiments provide for offline and online optimizations relative to fuel consumption. The benefit is increased freight efficiency in transporting cargo from source to destination by minimizing fuel consumption and maintaining drivability. | 08-02-2012 |
20120197501 | SYSTEM AND METHOD OF VEHICLE OPERATING CONDITION MANAGEMENT - A vehicle operating condition profile can be determined over a given route while also considering imposed constraints such as deviation from time targets, deviation from maximum governed speed limits, etc. Given current vehicle speed, engine state and transmission state, the present disclosure optimally manages the engine map and transmission to provide a recommended vehicle operating condition that optimizes fuel consumption in transitioning from one vehicle state to a target state. Exemplary embodiments provide for offline and online optimizations relative to fuel consumption. The benefit is increased freight efficiency in transporting cargo from source to destination by minimizing fuel consumption and maintaining drivability. | 08-02-2012 |
20120197500 | SYSTEM AND METHOD OF SPEED-BASED DOWNSPEED COASTING MANAGEMENT - A velocity profile can be used in conjunction with vehicle operating condition data to determine a gear shift schedule that mitigates the amount of service brake effort required to slow a vehicle by making optimal use of engine speed, friction and engine brakes. The gear shift point drives the engine to a higher operating speed and greater frictional torque, slowing the vehicle, which can then coast to a desired speed. The gear shift point can be timed to minimize fuel consumption during the maneuver. Thus, a vehicle downshift event is created based on the transmission gear recommendation. The benefit is increased freight efficiency in transporting cargo from source to destination by minimizing fuel consumption and maintaining drivability. | 08-02-2012 |
20120192560 | SYSTEM AND METHOD FOR REGULATING EGR COOLING USING A RANKINE CYCLE - This disclosure relates to a waste heat recovery (WHR) system and method for regulating exhaust gas recirculation (EGR) cooling, and more particularly, to a Rankine cycle WHR system and method, including a recuperator bypass arrangement to regulate EGR exhaust gas cooling for engine efficiency improvement and thermal management. This disclosure describes other unique bypass arrangements for increased flexibility in the ability to regulate EGR exhaust gas cooling. | 08-02-2012 |
20120078487 | ENGINE CONTROL SYSTEM AND METHOD BASED ON FUEL QUALITY - An engine control system and method includes sensing the quality of fuel in the engine relative to emissions, by for example sensing the level of an emission related constituent, such as sulfur. A fuel quality sensor detects a fuel quality of a fuel, such as the sulfur level in the fuel, and provides a signal in response to the fuel quality. The engine control system also includes a navigation device to determine whether an engine is located in a regulated or non-regulated region. The engine control system receives the signal and controls engine operation by, for example, enabling or disabling one or more engine algorithms to improve performance of the engine based on the fuel quality signal or, in other embodiments, the combination of the fuel quality and the location of the engine. | 03-29-2012 |