Low mass, through flow armature

Details Low mass, through flow armature Low mass, through flow armature

1994-12-02

1996-11-05

Shaver, Kevin P.

Fluid sprinkling, spraying, and diffusing

Including valve means in flow line

Reciprocating

2395855, 25112915, 25112916, F02M 5100

Patent

active

055708420

ABSTRACT:
A typical solenoid-operated fuel injector comprises a housing forming an enclosure which contains a solenoid coil that is selectively energized by electric current to operate the fuel injector. An inlet connector tube extends into a stator to convey liquid fuel into the enclosure, to a valve via which fuel is ejected from the enclosure. A valve needle is disposed within the enclosure between the stator and the valve and is operated by the solenoid coil acting through a spring-biased armature to open and close a flow path through the enclosure between the inlet connector tube and the valve. The stator forms a portion of a magnetic circuit path that directs magnetic flux across a working gap that is disposed within the enclosure between an end of the stator and on one side of the armature wherein the one side of the armature causes impact forces to be exerted axially on the stator during the opening and closing of the flow path. In accordance with the present invention, impact-minimization passages are provided to minimize the effect of such impact forces, and the impact-minimization passages comprises on the armature multi-dimensional fluid passages through the armature that minimizes the effect of such impact forces in comparison to the effect of such impact forces in the absence of the multi-dimensional fluid passages.

REFERENCES:
patent: 5114077 (1992-05-01), Cerny
patent: 5192048 (1993-03-01), Wakeman
patent: 5299776 (1994-04-01), Brinn, Jr. et al.
patent: 5341994 (1994-08-01), Wakeman

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