Fuel injection valve for internal combustion engines

Details Fuel injection valve for internal combustion engines Fuel injection valve for internal combustion engines

1985-05-02

1987-01-13

Nase, Jeffrey V.

Fluid sprinkling, spraying, and diffusing

Fluid pressure responsive discharge modifier* or flow...

Fuel injector or burner

2395339, F02M 4700

Patent

active

046358544

ABSTRACT:
A central plunger is disposed in the nozzle holder for displacement in unison with the nozzle needle through a whole lifting stroke thereof. The central plunger has an end remote from the nozzle needle slidably fitted in an axial bore formed in the nozzle holder and provided with restriction means. The axial bore is communicated with a fuel inlet port formed in the nozzle holder and connected to an injection pipe extending from the fuel injection pump. The nozzle needle is lifted in unison with the central plunger against increased fuel pressure within the axial bore via the central plunger in addition to the urging force of the nozzle spring, so that it gradually lifts, resulting in reduced combustion noise of the engine, as well as a high valve opening pressure.

REFERENCES:
patent: 4215821 (1980-08-01), Eblen
patent: 4269360 (1981-05-01), Kopse
patent: 4285471 (1981-08-01), Eblen et al.
patent: 4403740 (1983-09-01), Eblen et al.

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