F - Mech Eng,Light,Heat,Weapons – 02 – M
Patent
F - Mech Eng,Light,Heat,Weapons
02
M
103/4
F02M 41/08 (2006.01) F02D 1/12 (2006.01) F02M 41/06 (2006.01) F02M 59/20 (2006.01) F02M 63/02 (2006.01)
Patent
CA 1082985
ABSTRACT OF THE DISCLOSURE The invention provides a liquid fuel injection pump suited for the delivery of measured charges of liquid fuel under high pressure sequentially to the cylinders of an associ- ated engine comprising a pump chamber wherein the charges are pressurized to high pressure, a free piston type plunger reciprocably mounted in said pump chamber, a stop for said pump plunger to limit the maximum volume of said chamber, mechanical means for driving said pump plunger in a direction to reduce the volume of said pump chamber to pressurize the fuel therein, and hydraulic means to power said pump plunger in the opposite direction, said hydraulic means including a passage containing fuel under pressure in continuous communication with said pump chamber, a one way valve in said passage unseated by the pressure therein after the release of the pump plunger by said mechanical means to power the plunger against said stop and fully charge said pump chamber prior to each pumping stroke of the pump plunger, said hydraulic means serving as the sole means for powering the pump plunger against said stop.
292849
Marks & Clerk
Stanadyne Inc.
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