F - Mech Eng,Light,Heat,Weapons – 02 – D
Patent
F - Mech Eng,Light,Heat,Weapons
02
D
123/126
F02D 7/00 (2006.01) F02D 1/12 (2006.01) F02M 41/06 (2006.01) F02M 59/44 (2006.01)
Patent
CA 1155016
Abstract The present invention provides a liquid fuel injection pump suited for the delivery of measured charges of liquid fuel under high pressure to an associated engine comprising a pump chamber wherein the charges are pressurized to high pressure, means for metering the fuel delivered by the pump to provide measured charges of fuel in amount correlated with engine operating conditions, means for generating a pressure correlated with the speed of rotation of the pump and means for overriding the metering means to limit the maximum charge of fuel delivered by the pump per pumping stroke which varies with pump speed, the improvement wherein the overriding means comprises a piston mounted in a bore for longitudinal and rotational movement and is responsive to said pressure correlated with pump speed, said piston providing a cam profile formed by a surface of revolution around an axis which is nonparallel to the longitudinal axis of the piston, and means for holding the piston in a preselect rotational position.
375818
Marks & Clerk
Stanadyne Inc.
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