Means for attenuating audible noise from a solenoid-operated fue

Details Means for attenuating audible noise from a solenoid-operated fue Means for attenuating audible noise from a solenoid-operated fue

1991-07-29

1993-05-04

Kashnikow, Andres

Fluid sprinkling, spraying, and diffusing

Including valve means in flow line

Reciprocating

25112921, F16K 3106

Patent

active

052073874

ABSTRACT:
Audible noise emission from a solenoid-operated fuel injector is reduced by providing a circumferential slot around the end of the stator at the working gap between the stator and the armature. In one form of the invention the slot is unoccupied and creates a flange that absorbs impact energy by deflection. In another form the slot is filled with dimagnetic material that exerts an opposing force that retards armature motion as the armature approaches the stator in response to solenoid energization opening the injector.

REFERENCES:
patent: 4245789 (1981-01-01), Gray
patent: 4522372 (1985-06-01), Yano et al.
patent: 4637554 (1987-01-01), Takeda

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