Electromagnetic unit fuel injector with piston assist solenoid a

Details Electromagnetic unit fuel injector with piston assist solenoid a Electromagnetic unit fuel injector with piston assist solenoid a

1984-08-06

1985-11-05

Nase, Jeffrey V.

Fluid sprinkling, spraying, and diffusing

Unitary injection nozzle and pump or accumulator plunger

239125, F02M 4700

Patent

active

045508755

ABSTRACT:
An electromagnetic unit fuel injector includes a pump assembly having an external actuated plunger reciprocable in a bushing with flow therefrom during a pump stroke being directed to a fuel injection nozzle of the assembly. Fuel flow from the pump can also flow through a passage means, containing a normally open, substantially pressure-balanced control valve actuated by a solenoid assembly in the valve closing direction to block drain flow during a pump stroke, as desired. A piston, actuated by discharge fuel pressure is operatively connected to the control valve to assist the solenoid in holding the control valve in a closed position.

REFERENCES:
patent: 4129253 (1978-12-01), Bader et al.
patent: 4392612 (1983-07-01), Deckard et al.
patent: 4408718 (1983-10-01), Wich
patent: 4463900 (1984-08-01), Wich
patent: 4470545 (1984-09-01), Deckard et al.
patent: 4482094 (1984-11-01), Knape
patent: 4485969 (1984-12-01), Deckard et al.
Pending U.S. patent application Ser. No. 530,549 filed Sep. 9, 1983, in the name of John I. Deckard.
Pending U.S. patent application Ser. No. 595,694 filed Apr. 2, 1984 in the names of John I. Deckard; Richard R. Teerman and Russell H. Bosch.

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