Abstract: A unit fuel injector is provided comprising an injector body containing a pumping chamber for receiving fuel at a low pressure level from a fuel supply passage for subsequent discharge at a high pressure level, a discharge orifice and a transfer passage communicating with the pumping chamber and the discharge orifice. A valve element is provided for movement between (i) an advanced position wherein the supply passage communicates with the pumping chamber through the transfer passage and (ii) a retracted position wherein communication between the supply passage and the pumping chamber is blocked to allow fuel to flow from the pumping chamber through the transfer passage and out the discharge orifice.

Abstract: A unit fuel injector is provided comprising an injector body containing a pumping chamber and a valve element provided for movement between (i) an advanced position wherein a supply passage communicates with the pumping chamber through a transfer passage and (ii) a retracted position wherein communication between the supply passage and the pumping chamber is blocked to allow fuel to flow from the pumping chamber through the transfer passage and out the discharge orifice. In one embodiment the valve element includes a control valve integrally formed with a tip valve, and a force balancing element for tending to balance the forces acting on the valve element by reducing the effective cross-sectional area upon which fluid pressure operates. The control valve, whether formed integral with or separate from the tip valve, extends through the solenoid to engage a valve seat formed adjacent the pumping chamber.

Abstract: A fuel injection system for a diesel engine having injection and metering modes of operation for delivering fuel to an engine comprising a plurality of fuel injectors wherein each of said fuel injectors comprise a first port, a second port and a metering chamber for storing a premetered quantity of fuel, during the metering mode of operation, prior to the injection of said premetered quantity of fuel into the engine during the injection mode of operation.

Abstract: A fuel injection system for a diesel engine having an injection and metering modes of operation for delivering fuel to an engine comprising a plurality of fuel injectors wherein each of said fuel injectors comprise a first port, a second port and a metering chamber for storing a premetered quantity of fuel, during the metering mode of operation, prior to the injection of said premetered quantity of fuel into the engine during the injection mode of operation.

Abstract: An electromagnetic solenoid is adapted to open and close an associated valve or to reciprocally engage a slideable member. The solenoid includes an electromagnetic and multi-piece armature enclosed within a protective housing. The armature comprises an inner pole piece operatively connected to an outer pole piece to initially provide a multi-level air gap with respect to the electromagnet. The inner pole piece is telescopically received within the outer pole piece and may over-travel the outer pole piece once the motion of the outer pole piece has ceased.

Abstract: An electromagnetic control valve (20) having a protective ported housing (22, 24, 32) and an electromagnet (70) and a reciprocatively situated armature (90) located therein. The control valve (20) further has a movable valve plate (160) and stationary valve seat (110) operatively connected to the armature (90) and situated within a passage (40) to control the flow of fluid therethrough. The valve seat (110) includes a plurality of circularly spaced fluid receiving passages (146) and a single annular fluid exit passage (148). The valve plate (160) has a like plurality of circularly spaced passages (170) located in a mating surface (162) adapted to mate with a corresponding surface (142) of the valve seat (110) and to seal off the flow of fluid through the valve seat.

Abstract: A fuel injector (10) is provided for each cylinder of an internal combustion engine, the injector including an electronically operated control valve (146) disposed between supply passage (42) and a timing chamber (98) to control the admission of fuel into and out of the timing chamber. A primary pumping plunger (62) and a secondary plunger (90) are axially spaced within the central bore of the injection body, and a normally closed injection nozzle (14) is situated at one end of the injector body. A mechanical linkage (27, 28, 30) associated with the camshaft of the engine drives the primary pumping plunger (62) against the bias of a main spring (18). The timing chamber (98) is defined between the plungers (62, 90) and a metering chamber (128) is defined between the secondary plunger (90) and the nozzle (14).

Abstract: Disclosed herein is a carburetor for an internal combustion engine embodying a novel air control valve in which the air is admitted from a plurality of radially disposed apertures. Air flow is controlled by a like plurality of movable shutters attached to a movable cage assembly circumscribing the carburetor housing. The carburetor also embodies vacuum valves which generate vacuum signals for the engine's spark advance and exhaust gas recirculating mechanisms as a function of the engine's manifold vacuum and the position of the cage assembly. In the preferred embodiment, the cage assembly is a rotary cage.