Fuel injection valve

Details Fuel injection valve Fuel injection valve

2005-03-15

2005-03-15

Hwu, Davis (Department: 3752)

Fluid sprinkling, spraying, and diffusing

Including valve means in flow line

Reciprocating

C239S585400, C239S585500, C239S533300, C239S088000

Reexamination Certificate

active

06866210

ABSTRACT:
A fuel injector for fuel injection systems of internal combustion engines has a valve-closure member that is in working engagement with a valve needle and that coacts with a valve-seat surface positioned in an orifice of a valve-seat member to form a sealing seat. The fuel injector has at least one spray discharge opening positioned in the valve-seat member. Between the valve-seat surface and the spray discharge opening, a second surface that make a more acute angle with the center axis of the fuel injector than the valve-seat surface, is formed by the orifice of the valve-seat member. A closure element extension whose enveloping surface forms an obtuse angle with the contiguous contour of the valve-closure member is positioned at the downstream end of the valve-closure member.

REFERENCES:
patent: 4153205 (1979-05-01), Parrish, Jr.
patent: 4523719 (1985-06-01), Hofmann
patent: 4528951 (1985-07-01), Yamada
patent: 5033679 (1991-07-01), Golev et al.
patent: 5725157 (1998-03-01), DeLuca
patent: 5890660 (1999-04-01), Stevens
patent: 93 22 09 (1955-08-01), None
patent: 37 10 467 (1987-12-01), None
patent: 21 85 070 (1987-07-01), None

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