Fuel injection pump

Details Fuel injection pump Fuel injection pump

1977-10-05

1979-09-25

Freeh, William L.

Pumps

With condition responsive pumped fluid control

Bypass or relief valve part carried by or carries...

123139AQ, F04B 4900

Patent

active

041689402

ABSTRACT:
A fuel injection pump for delivery of fuel under high pressure to combustion chambers and in which the fuel is delivered by a rotating and reciprocating pump piston. The relative angular position of the pump piston with respect to its drive shaft defines the timing of fuel injection. This timing is varied in accordance with engine speed by a hydraulic servo-mechanism which includes a piston moving against two springs, one of which comes into engagement before the other so that the change of injection timing as a function of engine speed follows two different curves.

REFERENCES:
patent: 3635603 (1972-01-01), Eheim
patent: 3906916 (1975-09-01), Laufer
patent: 3910724 (1975-10-01), Okamoto
patent: 3942914 (1976-03-01), Hofer et al.
patent: 3945360 (1976-03-01), Laufer
patent: 4036193 (1977-07-01), Kobayashi et al.

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