Abstract: A fuel injection fuel supply system for a combustion engine has a fuel injector valve effective for metering and injecting all of the required fuel to the engine induction system; in one version a single valve functions to supply the required fuel in equal amounts to each of the combustion cylinders of the engine through chamber means exposed to superatmospheric air; an electromagnetic assembly having a magnetic open loop is used for cyclically opening and closing the injector valve.

Abstract: A fuel injection fuel supply system for a combustion engine has a single fuel injector valve effective for injecting all of the required fuel in equal amounts to each of the combustion cylinders of the engine through chamber means exposed to superatmospheric air; the injected fuel and the superatmospheric air combine to form a fuel-air emulsion which flows to the intake of each of the combustion cylinders.

Abstract: A fuel metering apparatus is shown as having a throttle body with an induction passage therethrough and a throttle valve for controlling flow through the induction passage, a fuel-air-emulsion discharge member is situated generally in the induction passage downstream of the throttle valve, an air passage communicates between a source of air and the fuel-air-emulsion discharge member, the air passage has a flow restrictor therein which provides for sonic flow therethrough, a fuel metering valving assembly is effective for metering liquid fuel at a superatmospheric pressure and delivering such metered liquid fuel into the air passage upstream of the flow restrictor thereby causing the thusly metered liquid fuel and air to pass through the sonic flow restrictor before being discharged into the induction passage by the fuel-air-emulsion discharge member, the fuel-air-emulsion discharge member has a plurality of discharge ports spaced from each other and directed into the induction passage, a heater is provided in

Abstract: A thermal barrier for a diesel engine poppet valve is disclosed. The barrier includes a cup-shaped member having a shield portion spaced from the valve face and a cylindrical skirt portion welded to the valve head. The shield, skirt, and valve face define a hermetically sealed chamber which, when evacuated of gases, provides a heat conduction barrier for insulating the valve face from combusting gases. The chamber is preferably filled with a reinforcing to structurally support the shield and further insulate the valve face. The structural support may be in the form of an insulating material and/or a fabricated material having a low contact area with the shield and valve face.

Abstract: A pilot fuel injection system for a diesel engine. One embodiment of the system includes a high pressure fuel pump, an accumulator, a mechanical fuel distributor, a pair of fuel metering valves for each cylinder of the engine, a fuel injection nozzle for each cylinder, and an electronic logic for controlling actuation of the metering valves; in a second system embodiment a pair of the metering valves supply fuel to all of the engine cylinders. Several embodiments of the metering valve are disclosed, some of which allows exclusion of the mechanical fuel distributor from the system. All of the disclosed metering valves meter fuel from the pump to the nozzles by traversing a passage in a valving member across another passage. Motion is imparted to the valving member by electromagnetic means which are energized by the electronic logic. The logic is responsive to engine speed and throttle position.

Abstract: A pilot fuel injection system for a diesel engine. One embodiment of the system includes a high pressure fuel pump, an accumulator, a mechanical fuel distributor, a pair of fuel metering valves for each cylinder of the engine, a fuel injection nozzle for each cylinder, and an electronic logic system for controlling actuation of the metering valves; in a second system embodiment a pair of the metering valves supply fuel to all of the engine cylinders. Several embodiments of the metering valve are disclosed, some of which allows exclusion of the mechanical fuel distributor from the system. All of the disclosed metering valves meter fuel from the pump to the nozzles by traversing a passage in a valving member across another passage. Motion is imparted to the valving member by electromagnetic means which are energized by the electronic logic. The logic is responsive to engine speed and throttle position.

Abstract: A valve assembly for a pilot fuel injection system, which system also includes a transfer pump, a high pressure fuel pump, and a fuel injection nozzle. The valve assembly includes a blocking valve and a metering valve in an unitary housing having a high pressure fuel inlet, a metered fuel outlet, and a fuel return outlet. The blocking valve includes a cam ring operating a spool type valving member which opens and closes the high pressure inlet to the metering valve in a timed phase relation with an engine. The metering valve includes a cam ring, a spool type valving member, a spring, and a dump means. The cam ring has a single lobe which smoothly increases on one side and abruptly decreases in two steps on the other side; the smooth side slides the spool in one direction at velocities proportional to engine speed while the inlet is closed by the blocking valve; and the spring moves the spool along a two stepped path at velocities independent of engine speed while the inlet is open.