Anti-bounce needle valve for a fuel injector

Details Anti-bounce needle valve for a fuel injector Anti-bounce needle valve for a fuel injector

2005-04-05

2005-04-05

Nguyen, Dinh Q. (Department: 3752)

Fluid sprinkling, spraying, and diffusing

Fluid pressure responsive discharge modifier* or flow...

Fuel injector or burner

C239S088000, C251S129010

Reexamination Certificate

active

06874703

ABSTRACT:
An anti-bounce needle valve for a fuel injector, wherein the needle inherently incorporates the anti-bounce feature. The needle has a conventionally configured exterior for interfacing with a valve seat and a tip body of a conventional fuel injector. The needle is characterized by a needle body having an interior cavity which is filled with small diameter shot, preferably generally spherical tungsten carbide shot. In operation, when the needle impacts upon the valve seat at the conclusion of a fuel injection process, the shot causes the needle collision with the valve seat to be inelastic, thereby eliminating needle bounce.

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