Fuel injection valve

Details Fuel injection valve Fuel injection valve

2009-04-21

2011-11-08

Ganey, Steven J (Department: 3752)

Fluid sprinkling, spraying, and diffusing

Fluid pressure responsive discharge modifier* or flow...

Fuel injector or burner

C239S533120, C239S575000, C239S585100, C239S585400, C239SDIG023, C210S429000

Reexamination Certificate

active

08052073

ABSTRACT:
A fuel injection valve includes a valve main body of a hollow tubular shape, a needle valve provided to the valve main body in a slidable manner, a valve seat opposing the needle valve to form a seat portion and having an injection hole formed downstream of the seat portion, and a guide portion provided upstream of the seat portion to guide the needle valve. An annular passage communicating in a circumferential direction is defined between the inner peripheral surface of the valve main body and the outer peripheral surface of the guide portion and a fuel passage through which to introduce a fuel from the annular passage to the seat portion is defined. An almost cylindrical filter to trap foreign matter heading toward the fuel passage is provided to the annular passage.

REFERENCES:
patent: 4453671 (1984-06-01), Hafner
patent: 5238192 (1993-08-01), McNair
patent: 6003791 (1999-12-01), Reiter
patent: 6015103 (2000-01-01), Kotkowicz
patent: 7770812 (2010-08-01), Sebastian
patent: 2007/0181713 (2007-08-01), Mueller et al.
patent: 2003-129922 (2003-05-01), None

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