Patent application number | Description | Published |
20100037856 | EXHAUST SYSTEM FOR ENGINE BRAKING - An engine braking system includes a turbocharger having a turbine and a compressor. An exhaust manifold includes a first pipe for channeling a first portion of the engine exhaust and a second pipe for channeling a second portion of the engine exhaust. The first and second pipes are connected to an inlet of the turbine. A cross pipe, as part of an exhaust gas recirculation (EGR) conduit, is open between the first and second pipes and at one end to the remaining portion of the EGR conduit. A valve can be arranged within the cross pipe and ca be operable in a first mode of operation to block flow between the first and second pipes and allow flow between the first pipe and the remaining portion of the EGR conduit and to allow flow between the first and second pipes and the inlet of the turbine. The valve is operable in a second mode of operation to allow flow between the first and second pipes, and to reduce or block flow between the second pipe and the turbine inlet. | 02-18-2010 |
20100186686 | HEATING SYSTEMS TO PREVENT FREEZING OF CONDENSATION IN BREATHER TUBES - A heating system for an engine breather system includes a housing configured to contain a heating fluid to be in heat transfer communication with a portion of the engine breather system, such as with the outlet conduit. A heating fluid supply channel is connected to a supply of heating fluid that is at a first pressure and to the housing and arranged to direct heating fluid into the housing. A heating fluid return channel is connected to the housing and to a supply of heating fluid that is at a second pressure that is lower than the first pressure, and is arranged to direct heating fluid away from the housing. The heating fluid can be engine oil, engine coolant, compressed air or exhaust gas. | 07-29-2010 |
20110023796 | Adaptive EGR Cooling System - A first loop contains engine coolant passageways ( | 02-03-2011 |
20110023840 | Exhaust Gas Cooler - A method of cooling exhaust gas (F) from an engine in an EGR cooler ( | 02-03-2011 |
20110023849 | Turbocharger with Integrated Centrifugal Breather - A breather system for a crankcase of an internal combustion engine, includes a centrifuge driven by the engine turbocharger. The turbocharger has a turbine and a compressor, the compressor driven by the turbine. The centrifuge is driven by the turbine on a common shaft with the compressor and includes a centrifuge inlet, a gas outlet and an oil outlet. Crankcase gas is delivered to the centrifuge and oil is removed by the centrifuge and collected within the turbocharger housing and substantially oil free gas is passed through the centrifuge, through an axially passage in the shaft and into an inlet of the compressor. | 02-03-2011 |
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 |
20110042546 | MOUNT FOR EXHAUST SYSTEM COMPONENTS | 02-24-2011 |
20110048345 | EXPANSION TANK FOR VEHICLE COOLING SYSTEM - An expansion tank ( | 03-03-2011 |
20110083648 | FLEX Dual Stage EGR Cooling - A circuit for cooling exhaust gas being recirculated through an EGR system ( | 04-14-2011 |
20110120411 | SOLENOID CONTROL FOR VALVE ACTUATION IN ENGINE BRAKE - An apparatus and method for varying a counter force to valve spring preload of a brake exhaust valve to undertake engine braking, includes a solenoid controlled hydraulic actuator. A control cylinder is arranged to move with a rocker arm and a control piston is arranged to slide within the control cylinder. During engine braking the control piston slides to press the valve stem to open the brake exhaust valve. An oil chamber is arranged above the control piston and is open into the control cylinder. A source of pressurized oil is selectably introduced into the oil chamber by the solenoid controlled hydraulic actuator to slide the control piston within the control cylinder to open and hold open the brake exhaust valve. | 05-26-2011 |
20110131979 | EGR COOLER CLEANING SYSTEM AND METHOD - A method for dislodging exhaust gas deposits from an exhaust gas recirculation (EGR) cooler ( | 06-09-2011 |
20110173973 | TURBINE INLET FLOW MODULATOR - A turbine ( | 07-21-2011 |
20130166178 | FUEL INJECTION PATTERN AND TIMING - A method is provided for operating an engine to limit soot emissions during fuel-enriched operation. The method includes operating the engine using a first fuel injection pattern and timing to inject fuel into a combustion chamber of the engine. The method further includes receiving a request for an increased engine power output and operating the engine using a second fuel injection pattern and timing to inject more fuel into the combustion in response to the request for the increased power output, where the second fuel injection pattern and timing is configured to minimize soot emissions during enriched fuel operations, such as during transient operations. | 06-27-2013 |
20130199176 | EXHAUST GAS THROTTLE VALVE - A method for driving exhaust gas recirculation comprising the steps of restricting exhaust gas flow into the turbine inlet to create backpressure in the exhaust system under low engine operating conditions, and providing an unrestricted exhaust gas flow to the turbine under normal engine operating conditions. Restriction of exhaust gas flow is accomplished through the use of an exhaust gas throttle valve disposed upstream of the turbine inlet. The valves can be adjustable knife edge flap valves or D-shaped valves situated in each passageway of a divided exhaust manifold, which are closed to varying degrees to generate desired levels of backpressure while allowing exhaust gas to pass though open regions of the partially obstructed flow pathway to reach the engine turbocharger. This allows the turbine to continue to spin, while at the same time exhaust gas back pressure upstream of the turbocharger is used to drive exhaust gas recirculation. | 08-08-2013 |
20130306039 | Turbo Compressor By-Pass - A system is provided for boosting the pressure of air delivered to the intake manifold of an engine during a transient event. The system includes an air flow line that is configured to deliver air to an inlet of a low pressure compressor. The system also includes a high pressure compressor. The system further includes a bypass system having at least one bypass valve and a bypass line. The bypass system is configured to allow at least a portion of the air in the air flow line to bypass the low pressure compressor when the bypass valve is in an open position. The bypass valve may be actuated to an open position during transient events so as to increase the speed at which the pressure, and thus air flow mass, of air being supplied to an engine obtained desired levels. | 11-21-2013 |
20140083392 | METHODS FOR CONTROLLING ENGINE IDLE SPEED - The present technology provides one or more methods of operating an engine in a motor vehicle. In at least one embodiment, the existence of an engine idle condition is determined. The method may also include determining whether an operator is present in the vehicle. In some embodiments, the engine operates at a performance idle speed when an engine idle condition exists and an operator is present in the vehicle. In further embodiments, the engine operates at a fuel economy idle speed when an idle condition exists and no operator is present in the vehicle. In still further embodiments, the fuel economy idle speed will be lower than the performance idle speed. The present technology anticipates engine workload and controls engine idle speeds. Based on the anticipated workloads, the present technology can reduce engine stalling while also reducing emissions and increasing fuel economy. | 03-27-2014 |
20140196698 | VVA CONTROL OF NOx IN A LOW AP AREA OF AN ENGINE OPERATING MAP - When the difference by which pressure in an engine exhaust manifold exceeds pressure in an engine intake manifold becomes less than a selected difference while an intake valve operating mechanism is closing cylinder intake valves at a selected time in the engine cycle, while an EGR system is conveying the engine exhaust component of an air/exhaust mixture from an exhaust system to an intake system, and a certain quantity of NOx is present in engine exhaust entering the exhaust manifold, the quantity of NOx present in engine exhaust entering the exhaust manifold is reduced below that certain quantity by causing the intake valve operating mechanism to close the cylinder intake valves earlier in the engine cycle than the selected time. | 07-17-2014 |
20140202422 | CONTROLLING CYLINDER USAGE DURING REDUCED LOAD ON AN INTERNAL COMBUSTION PROPULSION ENGINE - While an engine is miming with all engine cylinders being fueled, a historical record of engine output torque and engine speed is compiled. When the historical record discloses a change in engine operation from a relatively greater output torque and engine speed to a relatively lesser output torque and speed, fueling of at least one engine cylinder ceases while engine output torque and engine speed remain substantially unchanged at the relatively lesser output torque and speed by continuing fueling of other engine cylinders and by causing at least one mechanism to control the timing of operation of cylinder intake and exhaust valves of the at least one engine cylinder to substantially minimize pumping loss attributable to the at least one engine cylinder. | 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 |
20140216398 | 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 operating a valve mechanism to reduce flow through a charge air cooler and increase flow through a charge air cooler by-pass. | 08-07-2014 |
20140352938 | EGR COOLER HEADER DESIGN - A heat exchanger having a modified header design for absorbing high thermal loads, is described. The heat exchanger includes a housing having an interior space, a core within the interior space of the housing, the core comprising a plurality of flow passages, and a header positioned at an end of the housing and in communication with the core, wherein the header includes a thermal absorbing formation. The thermal absorbing formation may take the form of a continuous raised rib around an inner circumference of the header. The raised rib absorbs excess heat and reduces thermal strain on the heat exchanger. | 12-04-2014 |
20150075481 | OIL PROPERTY MANAGEMENT SYSTEM AND METHOD FOR INTERNAL COMBUSTION ENGINE FUEL ECONOMY AND MINIMUM WEAR RATES - A system and method for managing the characteristics of engine oil in a lubrication system for an internal combustion engine is disclosed. Generally speaking, the method includes the steps of determining a target viscosity for the engine oil based on engine speed and engine load, determining a working viscosity which may be directly measured or determined based on engine oil temperature and engine oil type, comparing the target viscosity to the working viscosity, deriving a target engine oil temperature, and directing engine oil to one of an oil cooler, an oil heater, or neither when and until the target engine oil temperature is achieved. The oil viscosity management system includes an engine lubrication system having a volume of engine oil, a cooler coupled to the lubrication system, a heating mechanism also coupled to the lubrication system, a valving system for directing flow of the oil and coupled to each of the lubrication system, the cooler and the heating mechanism, a signal generator for generating a signal based on operational parameters of the engine, and an estimator for controlling the valving system in response to the signal. | 03-19-2015 |