Fuel injector having a separable armature and pintle

Details Fuel injector having a separable armature and pintle Fuel injector having a separable armature and pintle

2008-09-09

2008-09-09

Gorman, Darren W (Department: 3752)

Fluid sprinkling, spraying, and diffusing

Including valve means in flow line

Reciprocating

C239S533700, C239S533900, C239S585100

Reexamination Certificate

active

11592026

ABSTRACT:
A fuel injector comprises an injector body having a tip portion defining a spray aperture; a pintle extending within the tip portion for axial movement between an extended position and a retracted position, the pintle having a head portion engageable with the spray aperture to close the spray aperture when the pintle is in its retracted position; biasing means being provided for biasing the pintle towards its retracted position; and solenoid means for selectively moving the pintle into said extended position; said solenoid means comprising an electromagnetic coil and a moveable armature capable of being acted upon by the coil to urge the pintle towards its extended position; wherein the pintle and armature are separable from one another whereby the armature can decouple from the pintle when the pintle moves from its extended position to its retracted position.

REFERENCES:
patent: 3450353 (1969-06-01), Eckert
patent: 3623460 (1971-11-01), Komaroff et al.
patent: 4342443 (1982-08-01), Wakeman
patent: 5104046 (1992-04-01), Sakagami
patent: 5141164 (1992-08-01), Ohno et al.
patent: 2004/0164175 (2004-08-01), Maeurer et al.
patent: 1197738 (1970-07-01), None

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