Fuel injection pump for internal combustion engines

Details Fuel injection pump for internal combustion engines Fuel injection pump for internal combustion engines

1986-05-05

1988-03-29

Miller, Carl Stuart

Internal-combustion engines

Charge forming device

With fuel pump

123179L, F02M 3900

Patent

active

047336455

ABSTRACT:
A fuel injection pump for internal combustion engines which has an rpm-proportional injection onset adjusting device, a pressure control valve controlling the supply pressure (phd f), a cold-start acceleration device having a pressure valve associated with the pressure control valve, and a full-load stop, controlled by an adjustment device, for limiting the maximum full-load quantity injected by the fuel injection pump. The adjustment device has a piston, which is acted upon on one end by the supply pressure in the suction chamber of the injection pump and on the other end by a pressure (p.sub.a) that is made to differ from the supply pressure by means of two separate throttles. The two throttles have the effect that if the pressure valve is closed, the adaptation device is subjected to a differential pressure which is approximately equal to that when the pressure valve is opened, and so the full-load courses attained in normal operation and in cold operation are virtually identical.

REFERENCES:
patent: 4359994 (1982-11-01), Hofer
patent: 4395990 (1983-08-01), Hofer
patent: 4430974 (1984-02-01), Bofinger et al.
patent: 4475521 (1984-10-01), Grener
patent: 4489698 (1984-12-01), Hofer
patent: 4510908 (1985-04-01), Eisele
patent: 4619238 (1986-10-01), Hain

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