Fuel injector having fuel-filled damping chamber

Details Fuel injector having fuel-filled damping chamber Fuel injector having fuel-filled damping chamber

1984-04-13

1986-08-12

Kashnikow, Andres

Fluid sprinkling, spraying, and diffusing

Terminal outlet formed between parts mounted for relative...

Spray fluid pressure responsive discharge modifier

2395333, 23953312, F02M 6108, F02M 6116

Patent

active

046051716

ABSTRACT:
A fuel injection nozzle for internal combustion engines, having an outwardly opening valve needle, which is connected with a piston upon which a damping cap is placed, which is supported on a shoulder integral with the housing. In the damping cap, a damping chamber is formed, which communicates via a throttle conduit with the flow path of the fuel. The diameter of the piston is smaller than the cross section enclosed by the valve seat, as a result of which an annular shoulder is attained, on which the unthrottled fuel pressure acts upon the valve needle in the opening direction. This disposition has the advantage that at lower rpm and smaller fuel quantities, the valve needle can be effectively braked even up to relatively long needle strokes, without the injection duration becoming overly long at higher rpm.

REFERENCES:
patent: 4531676 (1985-07-01), Seifert

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