Fuel injection pump for an internal combustion engine

Details Fuel injection pump for an internal combustion engine Fuel injection pump for an internal combustion engine

1975-10-17

1977-12-27

Freeh, William L.

Pumps

Expansible chamber type

Pumping member position controlled port

123139BD, 417500, F04B 706, F02M 5934

Patent

active

040652360

ABSTRACT:
The pump piston in a fuel injection pump is provided with longitudinal grooves which provide communication between the pressure chamber and the fuel supply chamber. An annular groove on the pump piston connects the longitudinal grooves so that communication between the pressure chamber and the fuel supply chamber is interrupted only after onset of the axial pressure stroke regardless of prior piston rotation.

REFERENCES:
patent: 2478528 (1949-08-01), Edwards
patent: 2965087 (1960-12-01), Bischoff
patent: 3758241 (1973-09-01), Eheim
patent: 3945360 (1976-03-01), Laufer

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