Abstract: An internal combustion engine exhaust gas recirculation (EGR) system includes an exhaust gas manifold back pressure valve insert assembly which has an exhaust gas recirculation (EGR) conduit interposed between exhaust manifold structure of the engine and atmospheric exhaust structure, and a valve mechanism disposed within the exhaust gas recirculation (EGR) conduit and movable between a fully closed position at which all exhaust gases from the engine pass to atmospheric exhaust through the atmospheric exhaust structure, and a fully opened position at which the valve mechanism partially occludes the atmospheric exhaust structure such that a sufficiently large back pressure is developed with respect to the atmospheric exhaust structure such that exhaust gases are forced through the exhaust gas recirculation (EGR) conduit.

Abstract: An integral engine fueling and engine compression braking hydraulically actuated, electronically controlled unit injector (HEUI) system comprises a fuel injection piston. A brake rocker arm extends transversely through the fuel injector and axially accommodates the fuel injector plunger and plunger return spring. The brake rocker arm is also operatively connected to the engine exhaust valve rocker arm, and a camming shaft, having a flat or planar surface portion, is operatively connected to an end portion of the brake rocker arm. When the end portion of the brake rocker arm is disposed in contact with the flat or planar surface portion of the camming shaft, normal fuel injection can occur in accordance with an electronic control module (ECM).

Abstract: A multifunction valve, particularly suited for use in an internal combustion engine, provides adjustable EGR thereto. The internal combustion engine has a block defining a plurality of combustion cylinders, each combustion cylinder of the plurality of combustion cylinders having a displacement volume. An intake manifold is fluidly connected to the block to supply combustion air to each combustion cylinder. The intake manifold has an air intake port and a first EGR inlet port. A secondary exhaust manifold is fluidly coupled to at least one of the plurality of combustion cylinders. The secondary exhaust manifold has an exhaust outlet port.

Abstract: In a hydraulically actuated gas exchange valve, the initiation and termination of gas exchange is achieved with a hydraulically driven valve that functions by opening an actuation fluid passage to a high pressure inlet source and a low pressure drain, respectively. The large amount of fluid needed to actuate a gas exchange valve can result in dynamic flow forces around the hydraulically driven valve making closing of the valve with a conventional biasing spring problematic. The small size of the valve limits the size and therefore strength of the biasing springs. Likewise, the need to provide a sufficiently strong spring limits valve designs. The present invention is intended to provide superior control over the timing of gas exchange by employing a hydraulic bias in place of the conventional biasing spring. Hydraulic bias allows both a greater closing force on the valve than could be provided with a spring, and allows for greater versatility in future valve designs.

Abstract: An exhaust gas recirculation system, particularly suitable for use in an internal combustion engine, is provided with a plurality of combustion cylinders, at least one exhaust manifold, and at least one intake manifold. Each exhaust manifold is coupled with a plurality of the combustion cylinders, and each intake manifold is coupled with a plurality of combustion cylinders. A first turbocharger includes a first turbine having at least one inlet and an outlet, and a first compressor having an inlet and an outlet. The at least one first turbine inlet is fluidly coupled with a corresponding exhaust manifold. A second turbocharger includes a second turbine having at least one inlet and an outlet, and a second compressor having an inlet and an outlet. The at least one second turbine inlet is fluidly coupled with a corresponding exhaust manifold. A valve assembly includes an inlet, a first outlet and a second outlet.

Abstract: An internal combustion engine includes a combustion air supply; an exhaust manifold; and an induction venturi. The induction venturi includes a combustion air inlet connected and in communication with the combustion air supply, an exhaust gas inlet connected and in communication with the exhaust manifold, and an outlet. A venturi section terminates at a venturi throat and is in communication with the combustion air inlet. An expansion section is positioned between and in communication with the venturi section and the outlet. At least one induction port terminates adjacent the venturi throat and within the expansion section.

Abstract: An internal combustion engine including at least one cylinder head defining a plurality of combustion cylinders. Each combustion cylinder has a displacement volume. An exhaust manifold is fluidly connected to each cylinder for transporting exhaust gas therefrom. An intake manifold provides combustion air to each cylinder. A turbocharger is driven by exhaust gas from the exhaust manifold and provides charged combustion air to the intake manifold. A mixing vessel has at least two inlets, at least one outlet and a mixing chamber. One of the inlets is fluidly connected with the exhaust manifold and an other of the inlets is fluidly connected with the turbocharger. The one inlet and the other inlet are connected with the mixing vessel in a parallel manner. The mixing chamber has a volume which is dependent upon a plurality of the displacement volumes.

Abstract: Past exhaust emission control systems fail to utilize exhaust gas recirculation during all operating parameters of an engine. The present exhaust gas recirculation system reduces the emissions emitted from an engine during all operating parameters of the engine. The engine has a cylinder, a rotatable crankshaft and a turbocharger defining a compressor section compressing a flow of intake air to a first preestablished pressure and being driven by a flow of exhaust gas having a first preestablished pressure. The exhaust gas recirculation system is comprised of a portion of the flow of exhaust gas being recirculated back to the cylinder and forming a flow of exhaust gas recirculation. The flow of exhaust gas recirculation is cooled. The flow of exhaust gas recirculation is mixed with exhaust gas and compressed to a second preestablished pressure by the positive displacement pump.

Abstract: An exhaust gas recirculation (EGR) system for a turbo-charged internal combustion engine is provided. The EGR system includes a recirculation conduit for recirculating a volume of exhaust gas from the exhaust manifold to the intake manifold; a cooling air conduit for transporting a flow of cooling air; and a gas-to-air heat exchanger disposed in operative association with the recirculation conduit and the cooling air conduit and adapted for cooling the volume of recirculated exhaust gas in the recirculation conduit. The cooling air passing through the gas-to air heat exchanger can be diverted from the pressurized intake air, cooled (ATAAC) air, or even fresh ambient air obtained from a source external to said engine and which optionally may be forcibly directed through the heat exchanger via a blower.

Abstract: Past exhaust emission control systems fail to utilize exhaust gas recirculation during all operating parameters of an engine. The present exhaust gas recirculation system reduces the emissions emitted from an engine during all operating parameters of the engine. The engine has a flow of intake air being at a first preestablished pressure and a flow of exhaust gas being at a first preestablished pressure being less that said first preestablished pressure of said intake air. The exhaust gas recirculation system is comprised of a portion of the flow of exhaust gas being recirculated to the cylinder and forming a flow of exhaust gas recirculation. The flow of exhaust gas recirculation is cooled. The flow of exhaust gas recirculation is compressed to a second preestablished pressure by a positive displacement pump. The second preestablished pressure of the flow of exhaust gas recirculation is at least equal to the first preestablished pressure of the intake air.

Abstract: Past exhaust emission control systems fail to utilize exhaust gas recirculation during all operating parameters of an engine. The present exhaust gas recirculation system reduces the emissions emitted from an engine during all operating parameters of the engine. The engine includes a cylinder, a rotatable crankshaft and a turbocharger defining a compressor section compressing a flow of intake air to a first preestablished pressure and being driven by a flow of exhaust gas having a first preestablished pressure. The exhaust gas recirculation system is comprised of a portion of the flow of exhaust gas being recirculated to the cylinder and forming a flow of recirculated exhaust gas. The flow of recirculated exhaust gas is cooled. A portion of the flow of intake air is compressed to a second preestablished pressure. The flow of recirculated exhaust gas is compressed to a second preestablished pressure being at least as great as the first preestablished pressure of the intake air.

Abstract: An EGR valve assembly for an internal combustion engine includes a check valve which allows the use of EGR under conditions where the average pressure of exhaust gases in the exhaust manifold is less than the average pressure of air in the intake manifold. The check valve allows pressure pulses in the exhaust manifold to advance exhaust gases from the exhaust manifold to the intake manifold while preventing the back flow of air from the intake manifold to the exhaust manifold. The EGR valve assembly further includes a housing defining a chamber. The housing further defines a housing outlet and a housing inlet both which are fluid communication with the chamber. The valve assembly further includes a master valve positioned within the chamber. The master valve is positionable between a first master position and a second master position.

Abstract: A braking control for an engine permits the timing and duration of exhaust valve opening events to be accurately determined independent of engine events so that braking power can be precisely controlled. According to one embodiment, further control over braking power can be accomplished by controlling turbocharger geometry.

Abstract: An hydraulic actuator for a spring closed poppet valve is connected to an electrically motivated valve selecting a high or a low fluid pressure source for a chamber in which a plunger reciprocates in a cylindrical body. Poppet valve closing is controlled by restricting fluid flow from the chamber to the low pressure source. Initially, closing flow is through a closing check valve and is gradually cut off by a frusto-conical end of the plunger. Closing flow is then restricted by an orifice bypassed by a snubber check valve during poppet valve opening. The closing check valve, an opening port, and a recuperation check valve open radially through the body. The closing check valve and the opening port communicate with an annular body groove connected to the electrically motivated valve.

Abstract: An internal coumbustion engine assembly which includes an exhaust gas recirculation mechanism, an engine air inlet and an engine exhaust outlet. The engine assembly further includes a valve assembly which includes a valve housing having a housing inlet and a housing outlet, the valve assembly is positionable between a first valve position and a second valve position. The engine assembly still further includes a first conduit which connects the engine exhaust outlet in fluid communication with the housing inlet and a second conduit which connects the engine air inlet in fluid communication with the housing outlet. The engine assembly still further includes a camshaft having a cam member secured thereto with the cam member positionable between a first cam member position and a second cam member position.

Abstract: A turbocharger assembly for use with an internal combustion engine, the turbocharger assembly including a housing having an integral backpressure control valve assembly disposed in the turbine exhaust passage and an actuator assembly integral to the turbocharger housing, the actuator assembly being hydraulically operated by the pressurized engine lubricating oil supplied for lubricating the turbocharger, and the actuator assembly selectively actuating the backpressure control valve assembly in response to control signals generated by a control module based on engine coolant temperature and intake air temperature to optimize engine warm-up time and engine operating temperature.

Abstract: An engine assembly includes a valve assembly which selectively enables exhaust gas to be recirculated from an engine exhaust outlet to an engine air inlet. The valve assembly is positionable between a first valve position and a second valve position. The engine exhaust outlet is isolated from the engine air inlet when the valve assembly is positioned in the first valve position. The engine exhaust outlet is in fluid communication with the engine air inlet when the valve assembly is positioned in the second valve position. Operational pressure generated by the injector oil pump of the engine assembly is used to move the valve assembly from the first valve position to the second valve position. A method of controlling a flow of engine exhaust in an internal combustion engine is also disclosed.

Abstract: Past exhaust emission control systems have failed to clean the exhaust gas prior to mixing with the intake air. The present exhaust emission control system removes at least a portion of the exhaust constituents from a flow of exhaust gas prior to mixing with a flow of intake air. The present exhaust emission control system includes a control system for monitoring a operating parameter of an engine. The control system interprets the operating parameter within a controller and the controller causes an exhaust valve regulator to move between an open position and a closed position. Thus, the movement of the exhaust valve regulator infinitely between the open position and the closed position defines the quantity of flow of exhaust gas to be mixed with the flow of intake air and controls the emission, especially of NOx, being emitted from the engine depending on the operating parameters of the engine.

Abstract: An actuator assembly that uses a fluctuating operational pressure generated by an injector oil pump to actuate an EGR valve is disclosed. The operational pressure is used to operate the actuator assembly without being adversely affected by the fluctuating nature of the operational pressure. The actuator assembly includes an actuator housing defining a chamber and an actuator oil inlet. The actuator oil inlet is in fluid communication with the pump outlet. The actuator assembly further includes a slider located within the chamber. The slider is positionable between a first slider position and a second slider position. The slider isolates the actuator oil inlet from the chamber when the slider is located in the first slider position. The actuator oil inlet is in fluid communication with the chamber when the slider is located in the second slider position. The actuator assembly still further includes a movement assembly for moving the slider between a first slider position and a second slider position.

Abstract: An outwardly opening valve system for an engine includes an engine having a hollow piston cylinder in fluid communication with a gas passageway via an opening. The engine also has a piston bore that opens to the hollow piston cylinder. A portion of the opening includes an outward valve seat positioned adjacent the gas passageway. An outward valve member with a valve face is positioned substantially in the gas passageway. The valve member is moveable between a closed position in which the valve face is against the valve seat closing the opening and an open position in which the valve face is away from the valve seat. An intensifier piston is positioned to reciprocate in the piston bore and has one end contacting gas within the hollow piston cylinder. Finally, a coupling linkage interconnects the intensifier piston to the outward valve member so that the valve member is held closed during combustion by exploiting combustion pressure within the hollow piston cylinder.