Electromagnetically actuatable injection valve

Details Electromagnetically actuatable injection valve Electromagnetically actuatable injection valve

1992-11-16

1993-08-03

Kashnikow, Andres

Fluid sprinkling, spraying, and diffusing

Including valve means in flow line

Reciprocating

2395854, 2395851, 25112918, 25112921, 267177, F16K 3106, F02M 5100

Patent

active

052321673

ABSTRACT:
An injection valve, which overcomes residual magnetic forces and cohesive forces that act between the armature and the core to make the armature stick to the core, impeding the closing motion of the valve needle. The injection valve has a spring adjusting sleeve and a stroke adjusting sleeve for the separate adjustment of the spring force of a restoring spring and of the stroke of the valve needle: these sleeves are disposed in a through bore of a valve end cap. The stroke of the valve needle is limited by a downstream end face of the stroke adjusting sleeve, which when the injection valve is fully open rests on an upstream face end of a fastening segment of the valve needle. A remanent air gap is left between the armature and the core. The novel injection valve is especially suitable for fuel injection systems of mixture-compressing internal combustion engines with externally supplied ignition.

REFERENCES:
patent: 3646914 (1972-03-01), Mennesson
patent: 4783009 (1988-11-01), Coates
patent: 4954799 (1990-09-01), Kumar
patent: 4967966 (1990-11-01), Babitzka et al.
patent: 4978074 (1990-12-01), Weinand
patent: 5143301 (1992-09-01), Reiter et al.
patent: 5170987 (1992-12-01), Krauss et al.

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