Fuel pump

Details Fuel pump Fuel pump

1994-03-08

1996-05-21

Gluck, Richard E.

Internal-combustion engines

Charge forming device

With fuel pump

417490, F02M 3704

Patent

active

055179738

ABSTRACT:
A fuel injection pump includes a pump barrel (12) against (12) against which is located in sealing relationship a valve block (22). A plunger (15) is reciprocably mounted in a bore (14) in the barrel (12) and the valve block (22) contains a spill valve (26) which can spill fuel from the bore (14) during the inward movement of the plunger. An inlet port (21) is formed in the wall of the bore (14) and is uncovered by the plunger (15) during its outward movement. The inlet port communicates with a first annular space (13) defined between the pump barrel and a surrounding pump body (10). The spilled fuel flows through the spill valve into a second annular space (55) defined between the valve block and the body. The first and second annular spaces have a respective inlet and outlet and are substantially isolated from each other.

REFERENCES:
patent: 4074666 (1978-02-01), Indra
patent: 4343280 (1982-08-01), Luscomb
patent: 4705006 (1987-11-01), Bastenhof
patent: 5373828 (1994-12-01), Askew et al.

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