Abstract: A motor vehicle has wheels on which it travels, a powertrain delivering propulsion torque to at least some of the wheels propel the vehicle, and a service brake system having service brakes. When the service brakes are applied by a service brake actuator, braking torque is applied to at least some wheels. A first device provides data representing a velocity that correlates with velocity of the vehicle, and a second device associated with the actuator provides data that distinguishes between application and non-application of the service brakes by the actuator. A processor monitors data from the first and second devices and processes the monitored data to provide a data output when the first device has disclosed velocity change indicative of the service brakes having been applied without the second device having disclosed that the service brakes have been applied.

Abstract: An exhaust system for an internal combustion engine comprises a turbocharger, an exhaust pipe, a first diesel particulate filter, a second diesel particulate filter, and a flow control valve. The exhaust pipe has a first portion, a second portion, and a third portion. At least the second portion of the exhaust pipe comprises a plurality of fluid paths. The first diesel particulate filter is coupled to on one of the plurality of fluid paths between the second portion and the third portion of the exhaust pipe. The second diesel particulate filter is coupled to another of the plurality of fluid paths. The flow control valve is disposed within the second portion of the exhaust pipe. The flow control valve is response to an input signal indicative of an operating condition and is configured to control exhaust flow to the first diesel particulate filter and the second diesel particulate filter in response to the input signal.

Abstract: 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.

Abstract: The method for regeneration of a diesel particulate filter of a vehicle equipped with a hybrid engine, wherein the temperature of the exhaust exiting the diesel engine is increased above a predetermined level by increasing load thereon, through optimization of interaction between the diesel particulate filter aftertreatment system and the hybrid engine control through messaging via a communication bus is disclosed. The load on the engine may be increased with or without the assistance of the electric motor/generator of the hybrid engine, and will not affect required acceleration/deceleration of the vehicle.

Abstract: A diesel exhaust after-treatment system (110, 210) for a vehicle includes a precious metal primary diesel oxidation catalyst (DOC1) and a precious metal secondary diesel oxidation catalyst (DOC2). The primary diesel oxidation catalyst (DOC1) is located on an exhaust pipe (116, 250) and in fluid communication with and between an engine (12) and an exhaust gas outlet (126, 226). The secondary diesel oxidation catalyst (DOC2) is disposed in fluid communication with the primary diesel oxidation catalyst (DOC1) on a second exhaust pipe (130, 230, 232) and in fluid communication with the engine (12). At least one valve (128, 228, 246) is disposed on the exhaust pipe (116, 216) for selectively permitting the continuous, positive flow of exhaust gas through the secondary diesel oxidation catalyst (DOC2).

Abstract: A device and method for catalytic reduction of NOx in gaseous products of a combustion process before entry into the atmosphere. The gaseous and particulate products of a combustion process flow radially through a radial flow particulate filter element (24) that is effective to trap particulate matter, and are then directed axially through a collector (26). An injector (30) introduces a reductant into an axial end of the collector for entrainment with axial flow through the collector in a direction away from the injector. Flow leaving the collector is directed through an SCR catalyst (40) where catalytic reduction of NOx occurs.

Abstract: A device and method for catalytic reduction of NOx in gaseous products of combustion by directing the products of combustion through a particulate filter (32) and then into a mixing zone (28) through separate flow passages (34, 36) at respective velocities greater than that at which products of combustion leave the filter, by causing an injector (38) to introduce urea solution through a nozzle (40) aimed toward the mixing zone along a slant direction (42) to, and across, flow entering the mixing zone through a first (34) of the separate flow passages and ultimately toward a far wall (44) of the mixing zone relative to the nozzle while directing exhaust flow entering the mixing zone through a second (36) of the separate flow passages to enter the mixing zone between the first flow passage and far wall, and by directing flow leaving the mixing zone through an SCR catalyst (48).

Abstract: A control system for engine braking for a vehicle powered by a turbocharged engine uses a supercharger to assist a turbocharger compressor to boost turbocharger air flow into the engine cylinders. An engine driven air pumping device draws ambient air, or alternately exhaust gas through the pump inlet, compresses the air, and delivers the compressed air through the pump outlet to the turbocharger compressor inlet or alternately the turbocharger compressor outlet. The increased air flow into the cylinders and out of the cylinder exhaust valves increases retarding power of the vehicle.

Abstract: A Connector Position Assurance (CPA) lock (10) for an engine wiring harness connector (12) having a connector body (14) and a lever latch (30) pivotal with respect to the connector body includes a lock body (34). A foot (52) extends from the lock body (34) and engages the connector (12) to fix the position of the lock body relative to the connector. The lock body (34) captures the lever latch (30) and prevents the pivoting of the lever latch with respect to the connector body (40) unless the foot (52) is deformed.

Abstract: A method of determining a need to perform regeneration of a diesel particulate filter in a diesel engine exhaust predicts a soot load of a diesel particulate filter with a pressure change based soot load estimate based upon a pressure change across the diesel particulate filter at a first time and a second time. A restriction sensitivity for the diesel particulate filter is calculated based upon the pressure change across the diesel particulate filter at the first time and the second time. The method transitions from the pressure change based soot load estimate to a model based soot accumulation estimate of the soot load of the diesel particulate filter upon the restriction sensitivity falling below a predetermined threshold. Regeneration of the diesel particulate filter is requested after the estimated soot level reaches a preset level based upon the soot accumulation model.

Abstract: A quick connect fluid valve assembly comprises a housing, a flow passage insert, and a movable connector. The flow passage insert is disposed at least partially within the housing and is movable relative to the housing. The flow passage insert forms a flow path from a first end of the flow passage insert to a second end of the flow passage insert. The movable connector is disposed in fluid communication with the flow path of the flow passage insert and the movable connector has at least one orifice. The movable connector is movable between a forward fluid flow position that allows forward fluid flow within the flow path of the flow passage insert and a backward fluid flow position that prevents backward fluid flow within the flow path of the flow passage insert.

Abstract: A method provides for transferring back-up data between on-board electronic modules of a vehicle. The presence of default parameters is sensed at a first electronic module during a running of the vehicle engine for an engine cycle. The current engine cycle accumulation register data is stored for the engine cycle in the first electronic module. A parameter and accumulation register data recovery routine is run wherein parameters and accumulation register data for the first electronic module are recovered from memory in the second electronic module on the vehicle and restored in the memory of the first electronic module. The information is transferred using SAE J1939 protocol. The first electronic module can be an engine control unit and the second electronic module can be a body controller.

Abstract: An algorithm or diagnostic for detecting and alarming unintended exothermic conditions in exhaust after treatment components selectively detects alarming temperature variations in exhaust after treatment components when caused by internal unintended exothermal events, rather than transient conditions that are externally driven. Not only are the output temperature and the delta temperature (T_out?T_in) across the component monitored in each after-treatment device, but also the input temperature is deeply analyzed through its recent history data in order to determine if any input variations caused the output changes.

Abstract: A nozzle (10) for a fuel injector of an engine includes a generally cylindrical housing (16) having a valve passage (28) disposed generally longitudinally along the centerline C of the housing and extending from a top surface (12) of the housing. An annular groove (40) is disposed in the top surface (12) of the housing (16) and is concentrically disposed about the valve passage (28). A plurality of high pressure passages (44) are disposed in the annular groove (40). The high pressure passages (44) fluidly communicate with the valve passage at a junction chamber (34). A nozzle tip (24) is in fluid communication with the junction chamber (34).

Abstract: A method of coking entrained oil from blow-by gas (F) of an engine (14) in a closed breather assembly (16) includes the steps of transporting the blow-by gas from the engine to a mist separator (18), transporting the blow-by gas from the mist separator to a breather coking device (12), heating the breather coking device at least one of conductively and convectively with an exhaust manifold (32) of the engine, coking out at least a portion of entrained oil from the blow-by gas and depositing the coked oil at the breather coking device, and transporting the blow-by gas from the breather coking device to one of a turbocharger compressor (24) and the engine.

Abstract: An engine processor (38) processes data for inferring temperature of exhaust gas at an exhaust manifold (18) of an internal combustion engine (10) whose exhaust system (16) contains an after-treatment device (26, 28) for treating exhaust gas and a sensor (30) for providing data for temperature of exhaust gas entering the after-treatment device. The processor processes data from the sensor and other data to infer temperature of exhaust gas at the exhaust manifold by executing an algorithm (FIGS. 3 and 4) that models temperature of exhaust gas at the exhaust manifold as a function of data from the sensor and the other data, including certain constants, certain geometry of the exhaust system, and certain variables related to operation of the engine.

Abstract: A battery backup system for providing uninterrupted power to components within a vehicle electronic control module (ECM). The backup system comprises a header connector with a recessed region for the battery. A connector plug is plugged into the header connector over the battery to cover the battery and shield the battery. The backup battery is disposed within the recessed region in contact with electrical contacts extending from the housing of the ECM, the electrical contacts providing a connection between the backup battery and an electronic component needing a backup power supply. Additional terminals on the connector plug can be used to provide power to the backup battery. The backup battery can be in a closed circuit with the electronic component, or the backup battery circuit can be switched to form a closed circuit with the electronic component when the electronic component no longer receives power from the primary power source.

Abstract: A condensation collection system for an internal combustion engine having an exhaust gas recirculation system comprises a condensation collection line, a condensation accumulator, and a condensation expulsion line. The condensation collection line is disposed in fluid communication with an air intake system of an internal combustion engine. The condensation accumulator is in fluid communication with the condensation collection line. The condensation collection line being disposed between the air intake system and the condensation accumulator. The condensation expulsion line is in fluid communication with the condensation accumulator. A portion of the condensation expulsion line is disposed in contact with an engine exhaust pipe. The condensation expulsion line has an opening to vent condensation to the atmosphere.

Abstract: 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.

Abstract: A method for injection reductant into an exhaust gas and for evaporating and decomposing the reductant at an elevated temperature includes providing an exhaust pipe having an interior surface and disposing the pipe in fluid communication with and upstream of a catalyst. The method includes the steps of disposing an internal cone within the pipe generally parallel to the pipe, mounting an injector to the exterior of the pipe in fluid communication with the cone, injecting the reductant into the cone, and directing the exhaust gas in a passage between the interior surface of the pipe and the cone. The exhaust gas is directed within the cone. The flow of exhaust gas has an elevated temperature compared to an ambient. A further step includes creating a drag force on the injected reductant to increase travel time of the injected reductant from the injector to the catalyst.