Fuel feed pump for a fuel injection pump for internal combustion

Details Fuel feed pump for a fuel injection pump for internal combustion Fuel feed pump for a fuel injection pump for internal combustion

1995-11-22

1997-01-28

Gluck, Richard E.

Pumps

With condition responsive pumped fluid control

Pressure responsive relief or bypass valve

F02M 4112

Patent

active

055972918

ABSTRACT:
Fuel feed pump for a fuel injection pump for internal combustion engines, with a pair of intermeshing gearwheels, the said pair being driven in rotation in a pumping chamber (3), which gearwheels feed fuel out of a suction space (13), connected to a supply tank, along a feed duct (17), formed between the end faces of the gearwheels and the circumferential wall of the pumping chamber (3), into a pressure space (15) connected to the fuel injection pump, and with a bypass duct (25) which connects the suction space (13) to the pressure space (15) and in which a pressure valve (31) controlling the maximum fuel pressure in the pressure space (15) is arranged. At the same time, according to the invention, the bypass duct (25) is integrated into the housing (1) of the fuel feed pump in such a way that the pressure valve (31) can be inserted into the housing (1) of the feed pump completely via the inlet orifice (19) of the suction space (13).

REFERENCES:
patent: 2310078 (1943-02-01), Herman
patent: 3146720 (1964-09-01), Henry
patent: 3628893 (1971-12-01), Carpigiani
patent: 4927343 (1990-05-01), Longberry
patent: 5496155 (1996-03-01), Noah et al.

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