Abstract: The present disclosure generally relates to a pumping element of a fuel pump for an internal combustion engine wherein the pumping element comprises a pumping chamber and a check valve assembly having a first insert including an angled passage in flow communication with a fuel outlet, and a second insert being disposed adjacent the pumping chamber, the second insert including a central bore in flow communication with a fuel inlet, a plurality of through holes in flow communication with the pumping chamber.

Abstract: The present disclosure generally relates to a pumping element of a fuel pump for an internal combustion engine wherein the pumping element comprises a pumping chamber and a check valve assembly having a first insert including a passage in flow communication with a fuel outlet, and a second insert being disposed adjacent the pumping chamber, the second insert including a bore in flow communication with a fuel inlet, a plurality of through holes in flow communication with the pumping chamber, and an inlet check valve plunger disposed in the bore for movement between an opened position wherein inlet fuel from the fuel inlet flows past the inlet check valve plunger through the plurality of through holes to the pumping chamber and a closed position wherein outlet fuel from the pumping chamber flows through the plurality of through holes past the inlet check valve plunger to the passage of the first insert.

Abstract: A fuel injector includes an injector body having an injector cavity, a valve seat, and a flow control member. The valve seat is comprised of a metallic material having a grain size of 0.05-5.0 ?m. Additionally, the fuel injector includes a nozzle valve element positioned in the injector cavity and configured to move between an open position in response to the flow control member being spaced apart from the valve seat and a closed position in response to the flow control member engaging the valve seat. Fuel is configured to flow from the fuel injector in response to the nozzle valve element being in the open position.

Abstract: A fuel injector includes an injector body having an injector cavity, a valve seat, and a flow control member. The valve seat is comprised of a metallic material having a grain size of 0.05-5.0 ?m. Additionally, the fuel injector includes a nozzle valve element positioned in the injector cavity and configured to move between an open position in response to the flow control member being spaced apart from the valve seat and a closed position in response to the flow control member engaging the valve seat. Fuel is configured to flow from the fuel injector in response to the nozzle valve element being in the open position.

Abstract: An improved rotary fuel distributor is provided which effectively dynamically centers the rotor during operation while actively cooling the rotor and refilling fuel passages to minimize cavitation. A pressure balancing system is provided which includes pressure area defining grooves formed adjacent a rotor outlet port to control the pressure gradient in the clearance between the rotor and the distributor housing thereby effectively providing a more predictable force component which can be controlled to more effectively balance the rotor in conjunction with two balancing ports positioned on the opposite side of the rotor from the outlet port. A refill and cooling system is provided to continuously and actively cool the rotor with cool, low pressure fuel throughout rotation thereby displacing the hot fuel with cool fuel and effectively preventing thermal seizure of the rotor.

Abstract: A unitized fuel supply assembly is disclosed including an in-line reciprocating cam driven pump (14) for supplying fuel to an accumulator (12) from which fuel is directed to a plurality of engine cylinders by means of a distributor (16) mounted on the unitized assembly. Dual pump control valves (20) provide fail safe electronic control over the effective pump displacement. One or more injection control valves mounted on the distributor are provided to control injection timing and quantity. The accumulator (12) contains a labyrinth of interconnected chambers (36) which are shaped and positioned to produce a minimum overall package size while providing for easy manufacture.

Abstract: A wear resistant, reduced stress at increased injection pressure fuel distributor assembly for distributing high pressure fuel to the fuel injectors of an internal combustion engine is provided. The assembly includes a fuel distributor rotor with a surface profile configuration that effectively and efficiently distributes high and low pressure fuel to the fuel injectors without internal fuel distribution channels. The rotor is preferably formed from a high thermal expansion, wear-resistant ceramic or coated metal material.

Abstract: A wear resistant, reduced stress at increased injection pressure fuel distributor assembly for distributing high pressure fuel to the fuel injectors of an internal combustion engine is provided. The assembly includes a fuel distributor rotor with a surface profile configuration that effectively and efficiently distributes high and low pressure fuel to the fuel injectors without internal fuel distribution channels. The rotor is preferably formed from a high thermal expansion, wear-resistant ceramic or coated metal material.

Abstract: A three-way valve including a valve housing having a valve chamber and a high pressure fluid supply inlet, high pressure fluid outlet and drain communicating with the valve chamber is disclosed. A movable member is reciprocally received in the valve chamber so as to be reciprocated between first and second positions for selectively fluidically communicating the outlet with either the inlet or drain. A first valve seat is formed in the valve housing and concentrically disposed in the valve chamber for sealing communication between the outlet and drain and a second valve seat is concentrically disposed in a cavity formed in the movable member for sealing communication between the inlet and outlet. A floating pin is received in the movable valve member cavity at a one end of the movable valve member and cooperates with the second valve seat for selectively sealing fluidic communication between the inlet and the outlet.

Abstract: A pressure balanced three-way solenoid valve including a valve housing having a valve chamber and a high pressure fluid supply passage, high pressure fluid outlet passage and drain passage communicating with the valve chamber is disclosed. A movable valve member is reciprocally received in the valve chamber so as to be reciprocated between first and second positions for selectively fluidically communicating the outlet passage with either the supply passage or drain passage. A first valve seat is formed in the valve housing and concentrically disposed in the valve chamber for fluidic communication between the outlet passage and drain passage and a second valve seat is concentrically disposed in a cavity formed in the movable valve member for sealing communication between the supply passage and outlet passages.

Abstract: An identification technique that includes a closed loop parameter estimation algorithm for process gain, time constant and deadtime. The estimation algorithm uses time integrals of system variables responding to a step input. Proper selection of the integrals (control areas) results in a set of equations which are solvable for desired process parameters.

Abstract: A self-tuning system and method for controlling a process based on a measured variable comprises modular parameter estimators, parameter converters and controllers which are used to control the process and receive input from the process. Self-tuning gain scheduling allows the calculated parameters to be updated by a second variable from the process. Regression analysis is used in conjunction with the conventional gain scheduling to more accurately refine the control action. A limiter is also used in conjunction with the regression analysis to avoid an overly high or low correction signal for the controller.

Abstract: A proportional plus integral plus differential (PID) controller containing an algorithm option is disclosed. The option allows the selection of a classical interacting type of controller or a non-interacting type of controller. The classical interacting type of controller is characterized by the property that tuning any one of the proportional, integral or derivative terms changes the effective value of the other terms. In contrast, the non-interacting type of controller is characterized by the property that tuning any one of the proportional, integral or derivative terms has no effect on the other terms.

Abstract: A self-tuning system and method for controlling a process based on a measured parameter comprises modular parameter estimators and parameter controllers which are used in conjunction with the process and which receive as an input the measured parameter. An internal model controller is used as one of the parameter converters and incorporates a feed forward index which is used for gain scheduling. Regression analysis is also used in conjunction with the conventional gain scheduling to more accurate refine the control action. A limiter is also used in conjunction with the regression analysis to avoid an overly high or overly low correction signal for the controller.