Fuel injection pump for internal combustion engines

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

1992-05-29

1993-02-23

Miller, Carl S.

Internal-combustion engines

Charge forming device

With fuel pump

123449, F02M 3704

Patent

active

051880830

ABSTRACT:
The invention is based on a fuel injection pump in which to supply a very rapid pressure rise in the interior of a fuel injection pump, a pressure valve controlling this pressure is modified such that upon cold starting of the engine, the pressure valve closes a bypass line at the feed pump and thus delivers all the fuel to the fuel injection pump. The closure is effected as a function of rpm and accordingly pressure, and also as a function of the engine operating temperature; in the fuel injection pump according to the invention, the rpm- and pressure-dependent diversion is performed by the adjusting piston of an injection adjuster. Thus, compared with the known cold-starting accelerating devices, one additional pressure limiting valve can be eliminated.

REFERENCES:
patent: 3101078 (1963-08-01), Evans
patent: 3147746 (1964-09-01), Hofer
patent: 4353343 (1982-10-01), Trachte
patent: 4368709 (1983-01-01), Yasuhara
patent: 4430974 (1984-02-01), Bofinger
patent: 4475521 (1984-10-01), Greiner
patent: 4502449 (1985-03-01), Laufer
patent: 4619238 (1986-10-01), Hain
patent: 4622943 (1986-11-01), Braun
patent: 4733645 (1988-03-01), Hain
patent: 5085196 (1992-02-01), Hain

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