Timing control for fuel injection pump

Details Timing control for fuel injection pump Timing control for fuel injection pump

1976-05-21

1977-07-26

Dority, Jr., Carroll B.

Internal-combustion engines

Intake manifold

Manifold tuning, balancing or pressure regulating means

123139ST, 123179L, 417221, F02M 5920

Patent

active

040375730

ABSTRACT:
A fuel injection pump having a cam and pump plungers movable relative to the cam to translate the contour of the cam into a sequence of pumping strokes is disclosed. An advance piston connected to the cam to adjust the timing of the pumping strokes is controlled by a hydraulic pressure which increases with engine speed. The advance piston mounts two control pistons one of which controls the delivery of hydraulic pressure to the advance piston after a predetermined engine speed is reached and the other bypasses the first to control the delivery of the hydraulic pressure during starting and until a lower engine speed is reached.

REFERENCES:
patent: 3147746 (1964-09-01), Hofer
patent: 3433159 (1969-03-01), Kemp
patent: 3486492 (1969-12-01), Lehnerer
patent: 3897764 (1975-08-01), Bakti

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