Injection timing control device for distributor-type fuel inject

Details Injection timing control device for distributor-type fuel inject Injection timing control device for distributor-type fuel inject

1981-11-09

1983-10-11

Lazarus, Ira S.

Internal-combustion engines

Charge forming device

With fuel pump

F02M 5920

Patent

active

044085915

ABSTRACT:
A servo valve is arranged within a timer piston for displacement in response to fuel pressure variable as a function of the engine rpm. When there occurs a change in the fuel pressure, the servo valve is automatically displaced relative to the timer piston to open a passageway for supplying the above fuel pressure to a hydraulic oil chamber defined at one end of the timer piston to cause displacement of the timer piston for control of injection timing. When there is no change in the fuel pressure, the servo valve is positioned to close the passageway to hold the timer piston stationary. Further, means may be provided for adjusting the setting load of a servo spring urging the valve body of the servo valve against the above fuel pressure.

REFERENCES:
patent: 3051154 (1962-08-01), Kemp
patent: 3433159 (1969-03-01), Kemp
patent: 3447520 (1969-06-01), Drori
patent: 3552366 (1971-01-01), Kemp
patent: 3897764 (1975-08-01), Bakti
patent: 4037574 (1977-07-01), Swift
patent: 4074667 (1978-02-01), Skinner
patent: 4329961 (1982-05-01), Johnston

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