Fuel injection valve

Details Fuel injection valve Fuel injection valve

1979-12-03

1981-09-08

Kashnikow, Andres

Fluid sprinkling, spraying, and diffusing

Combining of separately supplied fluids

Fluid streams have angular junction

2395332, B05B 134

Patent

active

042880378

ABSTRACT:
A fuel injection valve is proposed that serves for low-pressure fuel injection into the intake manifold of a mixture-compressing, externally ignited internal combustion engine. The fuel injection valve (1) includes a valve needle (12,12") which opens against the force of a closing spring (22), and this valve needle has downstream of the valve seat (16, 16") a fuel guidance cone (17, 17', 17") which tapers in the direction of fuel flow. The fuel guidance cone (17,17', 17") is so disposed that it projects into an air chamber (26) of the fuel injection valve (1) connected to an air line (9). The fuel guidance cone (17, 17', 17") may be embodied either conically or with a surface which extends in a concave manner and tapers tangentially toward the conical tip (29, 29'). An embodiment of a fuel injection valve (1) of this kind with a fuel guidance cone (17, 17', 17"), even lacking an air envelope during full-load or during the transition from idle to full-load assures the formation of a focused fuel jet without dampening the wall of an ejection nozzle (28) provided in alignment with the valve needle (12,12") on the fuel injection valve.

REFERENCES:
patent: 2860780 (1958-11-01), Ziesche et al.
patent: 2913187 (1959-11-01), Anderson
patent: 3782639 (1974-01-01), Boltz et al.

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