Fuel injection pump with positive displacement delivery valve ha

Details Fuel injection pump with positive displacement delivery valve ha Fuel injection pump with positive displacement delivery valve ha

1978-07-31

1980-05-06

Myhre, Charles J.

Internal-combustion engines

Intake manifold

Manifold tuning, balancing or pressure regulating means

123139AF, 417456, F02M 4108, F04B 3910

Patent

active

042011701

ABSTRACT:
A diesel fuel injection system having a positive displacement fuel delivery valve with a valve piston with a conventional passage for delivering fuel to injection nozzles and a second more restricted passage at an intermediate axial position of the valve piston for delivering such fuel at lower pumping rates, such as during low speed engine cranking, so that the valve piston is displaced a lesser amount at lower pumping rates and thereby increase the downstream residual fuel pressure when the pumping rate is lower.

REFERENCES:
patent: 2883934 (1959-04-01), Roosa
patent: 3489093 (1970-01-01), Thornber
patent: 3704963 (1972-12-01), Baxter
patent: 3752138 (1973-08-01), Gaines
patent: 3773440 (1973-11-01), Tateishi
patent: 3861833 (1975-01-01), Salzgeber et al.
patent: 3918853 (1975-11-01), Drori
patent: 4074668 (1978-02-01), Indra

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