Fuel injection pump for internal combustion engines

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

1977-03-09

1979-08-28

Brown, David H.

Internal-combustion engines

Intake manifold

Manifold tuning, balancing or pressure regulating means

417494, 417499, 123139AE, 123139AD, 123139AF, F02D 304, F02D 100

Patent

active

041657233

ABSTRACT:
A fuel injection pump for internal combustion engines includes a reciprocating and rotating pump piston. Fuel delivery to the pressure line connected to an injection valve can be interrupted by the opening of a main control orifice in the wall of the cylinder which permits fuel to return to a low pressure volume of the pump. In order to provide for pressure relief of the pressure line when no injection takes place, there are provided a pressure control valve and a pressure relief conduit which bypasses this valve. The pressure relief conduit terminates in an auxiliary control orifice in the wall of the cylinder and is also obturated by the piston during its motion. The two control orifices are so located as to be opened in a predetermined sequence. The piston surface includes portions which block the auxiliary control orifice during engine starting.

REFERENCES:
patent: 2225019 (1940-12-01), Retel
patent: 2254441 (1941-09-01), Muller et al.
patent: 2696807 (1954-12-01), Junge et al.
patent: 2810375 (1957-10-01), Froehlich et al.

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