Fuel injection valve

Details Fuel injection valve Fuel injection valve

2006-12-19

2006-12-19

Nguyen, Dinh Q. (Department: 3752)

Fluid sprinkling, spraying, and diffusing

Including valve means in flow line

Reciprocating

C239S585300, C239S585400, C239S585500, C239S900000, C251S129150

Reexamination Certificate

active

07150417

ABSTRACT:
A valve seat member has a valve seat with a fuel injection aperture. A valve body is movable between a close position wherein the valve body is put on the valve seat and an open position wherein the valve body is separated from the valve seat. A biasing member biases the valve body in a direction of the close position. An electromagnetic coil, upon energization, moves the valve body in a direction of the open position against the biasing force of the biasing member. A nozzle plate is connected to the valve seat member in a manner to cover the fuel injection aperture. The nozzle plate has at a part thereof facing the fuel injection aperture a domed portion that is projected away from the fuel injection aperture. The domed portion has a plurality of fuel injection openings. A side wall extends around and along a periphery of the nozzle plate so as to form a fuel holding recess that is defined by the nozzle plate other than domed portion and the side wall. The fuel holding recess is able to hold a certain amount of a fuel by the force of a surface tension possessed by the fuel.

REFERENCES:
patent: 5437413 (1995-08-01), Shen et al.
patent: 5746376 (1998-05-01), Romann et al.
patent: 5862991 (1999-01-01), Willke et al.
patent: 6877678 (2005-04-01), Xu et al.
patent: 10-122085 (1998-05-01), None

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