Abstract: An internal combustion engine includes a turbocharger having a turbine, a first set of combustion cylinders, and a second set of combustion cylinders. A first particulate trap is in fluid communication between the first set of combustion cylinders and the turbine. A second particulate trap is in fluid communication between the second set of combustion cylinders and the turbine.

Abstract: A compact system for introducing hydrocarbons in the form of engine fuel into the bearing housing for a turbocharger adjacent the turbine wheel shaft. The hydrocarbons are directed outward by centrifugal force and are vaporized by the heat of the impeller. As a result the hydrocarbons are available substantially immediately after the turbine to interact with a catalyst to increase the temperature of the exhaust stream for regeneration of a diesel particulate filter.

Abstract: An assembly for cleaning blowby gases has an electric heater and a downstream catalyst positioned in series relationship in a blowby conduit leading from an engine's crankcase to the atmosphere. The heater is controlled by a controller to maintain a selected temperature at the inlet to the catalyst as determined by a temperature sensor. The heating of the blowby gases increases the blowby gas temperature to a level where the catalyst is active to oxidize the constituents of the blowby gas stream.

Abstract: A particulate filter regeneration system for an internal combustion engine includes a plurality of combustion cylinders, an intake manifold and an exhaust manifold. The particulate filter regeneration system includes a particulate filter adapted for communication with the exhaust manifold, a flame heater adapted for communication with the intake manifold, and a temperature indicator for providing an indication of a temperature associated with the exhaust manifold. A controller is coupled with the temperature indicator and the flame heater. The controller actuates the flame heater dependent upon a particulate filter regeneration indicator and a signal from the temperature indicator indicating a temperature of less than approximately 300° C.

Abstract: An internal combustion engine includes a turbocharger having a turbine, a first set of combustion cylinders, and a second set of combustion cylinders. A first particulate trap is in fluid communication between the first set of combustion cylinders and the turbine. A second particulate trap is in fluid communication between the second set of combustion cylinders and the turbine.

Abstract: A power system including a stoichiometric compression ignition engine in which a roots blower is positioned in the air intake for the engine to control air flow. Air flow is decreased during part power conditions to maintain the air-fuel ratio in the combustion chamber of the engine at stoichiometric, thus enabling the use of inexpensive three-way catalyst to reduce oxides of nitrogen. The roots blower is connected to a motor generator so that when air flow is reduced, electrical energy is stored which is made available either to the roots blower to temporarily increase air flow or to the system electrical load and thus recapture energy that would otherwise be lost in reducing air flow.

Abstract: An internal combustion engine includes a first set of combustion cylinders, a second set of combustion cylinders, and a turbocharger having a turbine. A first particulate filter includes a bottom inlet in communication with the first set of combustion cylinders, a top outlet in communication with the turbine, and a generally vertically upward flow path through the first particulate filter inlet. A second particulate filter includes a bottom inlet in communication with the second set of combustion cylinders, a top outlet in communication with the turbine, and a generally vertically upward flow path through the second particulate filter inlet. An ash accumulation receptacle is positioned generally below each of the first particulate filter inlet and the second particulate filter inlet.

Abstract: A method of operating an internal combustion engine includes the steps of: igniting a diesel fuel and air mixture in a combustion cylinder using spark ignition; sensing knock in the combustion cylinder; adjusting a spark timing and a fuel injection amount in the combustion cylinder dependent upon the sensed knock; and igniting the diesel fuel and air mixture in the combustion cylinder using compression ignition.

Abstract: A power system including a stoichiometric compression ignition engine in which a roots blower is positioned in the air intake for the engine to control air flow. Air flow is decreased during part power conditions to maintain the air-fuel ratio in the combustion chamber of the engine at stoichiometric, thus enabling the use of inexpensive three-way catalyst to reduce oxides of nitrogen. The roots blower is connected to a motor generator so that when air flow is reduced, electrical energy is stored which is made available either to the roots blower to temporarily increase air flow or to the system electrical load and thus recapture energy that would otherwise be lost in reducing air flow.

Abstract: A compact system for introducing hydrocarbons in the form of engine fuel into the bearing housing for a turbocharger adjacent the turbine wheel shaft. The hydrocarbons are directed outward by centrifugal force and are vaporized by the heat of the impeller. As a result the hydrocarbons are available substantially immediately after the turbine to interact with a catalyst to increase the temperature of the exhaust stream for regeneration of a diesel particulate filter.

Abstract: A particulate filter regeneration system for an internal combustion engine includes a plurality of combustion cylinders, an intake manifold and an exhaust manifold. The particulate filter regeneration system includes a particulate filter adapted for communication with the exhaust manifold, a flame heater adapted for communication with the intake manifold, and a temperature indicator for providing an indication of a temperature associated with the exhaust manifold. A controller is coupled with the temperature indicator and the flame heater. The controller actuates the flame heater dependent upon a particulate filter regeneration indicator and a signal from the temperature indicator indicating a temperature of less than approximately 300° C.

Abstract: An internal combustion engine includes a first set of combustion cylinders and a second set of combustion cylinders. A first exhaust manifold is associated with the first set of combustion cylinders, and a second exhaust manifold is associated with the second set of combustion cylinders. A turbocharger includes a turbine which is fluidly coupled exclusively with the first exhaust manifold. An EGR system fluidly interconnects the second exhaust manifold and an intake manifold.

Abstract: An assembly for cleaning blowby gases has an electric heater and a downstream catalyst positioned in series relationship in a blowby conduit leading from an engine's crankcase to the atmosphere. The heater is controlled by a controller to maintain a selected temperature at the inlet to the catalyst as determined by a temperature sensor. The heating of the blowby gases increases the blowby gas temperature to a level where the catalyst is active to oxidize the constituents of the blowby gas stream.

Abstract: An exhaust gas recirculation (EGR) system is provided for an internal combustion engine having a combustion air intake circuit, an exhaust manifold, and an exhaust circuit for communicating engine exhaust to the environment. The EGR system includes an air-to-gas EGR cooler, an air supply conduit for supplying inlet air to the EGR cooler, an EGR supply conduit for communicating exhaust from the exhaust circuit to the EGR cooler, and an EGR outlet conduit communicating cooled EGR from the EGR cooler to the intake circuit. The EGR system also includes a venturi unit in the exhaust circuit, and an air outlet conduit communicating heated air from the EGR cooler to the venturi unit. Flow of exhaust through the venturi creates a pressure which draws cooling air through the EGR cooler. A valve controls flow through the outlet conduit as a function of a sensed temperature in the intake circuit.

Abstract: An internal combustion engine includes at least on intake manifold, at least one exhaust manifold, and a plurality of combustion cylinders for receiving a near stoichiometric fuel and air mixture from the at least one intake manifold. A turbocharger, including a turbine and a compressor, is in communication with at least one exhaust manifold. The compressor has a high pressure side in communication with at least one intake manifold. A particulate filter is in communication with the turbine and has an inlet. A combustion air duct is in communication with the high pressure side of the compressor and the particulate filter inlet.

Abstract: An internal combustion engine includes a first set of combustion cylinders, a second set of combustion cylinders, and a turbocharger having a turbine. A first particulate filter includes a bottom inlet in communication with the first set of combustion cylinders, a top outlet in communication with the turbine, and a generally vertically upward flow path through the first particulate filter inlet. A second particulate filter includes a bottom inlet in communication with the second set of combustion cylinders, a top outlet in communication with the turbine, and a generally vertically upward flow path through the second particulate filter inlet. An ash accumulation receptacle is positioned generally below each of the first particulate filter inlet and the second particulate filter inlet.

Abstract: An integrated unit pump injector that includes a cam follower, unit pump, injection line and injection nozzle is pre-assembled for installation in an engine block and cylinder head. By pre-assembling the integrated unit pump injector, the assembly can be tested for fuel leaks, injection timing and volume of fuel delivered by the pump without first installing the individual devices in an engine. Variation in fuel output, injection timing and fuel volume is reduced while engine assembly time and cost is also reduced. The integrated unit pump injector orients the pump and nozzle on parallel axes and requires that the pump bore in the block and the nozzle bore in the cylinder head also be parallel to enable the injector and pump to be fixed relative to one another prior to installation and both installed simultaneously by movement in the direction parallel to their axes.