Electromagnetic unit fuel injector

Details Electromagnetic unit fuel injector Electromagnetic unit fuel injector

1982-02-19

1983-07-12

Love, John J.

Fluid sprinkling, spraying, and diffusing

Unitary injection nozzle and pump or accumulator plunger

239585, F02M 5500, F02M 5100

Patent

active

043926126

ABSTRACT:
An electromagnetic unit fuel injector for use in a diesel engine includes a housing with a pump therein defined by an externally actuated plunger reciprocable in a bushing and defining therewith a pump chamber open at one end for the discharge of fuel to a spring biased, pressure actuated fuel injection nozzle. The pump chamber is also connected to a first chamber via a solenoid actuated, normally open, hollow, ported valve controlled passage to permit the ingress and egress of fuel. The first chamber adjacent to one end of the valve is in flow communication with a second chamber at the opposite end of the valve and these chambers are connected to a drain passage and supply passage, respectively. During a pump stroke, the solenoid can be energized to move the valve in position to block flow from the pump chamber to the first chamber so as to allow the pressurization of fuel by the pump to effect discharge of fuel from the injection nozzle.

REFERENCES:
patent: 2144861 (1939-01-01), Truxell, Jr.
patent: 3006556 (1961-10-01), Shade et al.
patent: 3777977 (1973-12-01), Regneault et al.
patent: 3982693 (1976-09-01), Hulsing
patent: 4046112 (1977-09-01), Deckard
patent: 4129253 (1978-12-01), Bader, Jr. et al.
patent: 4129254 (1978-12-01), Bader, Jr. et al.
patent: 4129255 (1978-12-01), Bader, Jr. et al.
patent: 4129256 (1978-12-01), Bader, Jr. et al.
patent: 4317541 (1982-03-01), Beardmore

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