Fuel injector

Details Fuel injector Fuel injector

2011-07-05

2011-07-05

Hwu, Davis (Department: 3752)

Fluid sprinkling, spraying, and diffusing

Injection nozzle opened by relieving supply

C239S585500

Reexamination Certificate

active

07971802

ABSTRACT:
A fuel injector comprising a nozzle having a nozzle needle which is moveable with respect to a first needle seat to control fuel delivery through a nozzle outlet. The injector includes a nozzle control valve for controlling fuel flow into a control chamber through a first passage to pressurise the control chamber, and for controlling fuel flow out of said control chamber through said first passage to depressurise the control chamber. Movement of the nozzle needle is controlled by fuel pressure within the control chamber, such that pressurising the control chamber causes the nozzle needle to be urged against the first needle seat to close the nozzle outlet, and depressurising the control chamber causes the nozzle needle to lift from the first needle seat to open the nozzle outlet. The nozzle needle defines, at least in part, a restricted passage through which fuel can flow into the control chamber as the control chamber depressurises. The fuel flow into the control chamber through the restricted passage serves to reduce the rate at which the control chamber depressurises, thereby reducing the rate at which the nozzle needle lifts from the first needle seat to open the nozzle outlet.

REFERENCES:
patent: 5020500 (1991-06-01), Kelly
patent: 5244154 (1993-09-01), Buchholz et al.
patent: 5544816 (1996-08-01), Nally et al.
patent: 6367453 (2002-04-01), Igashira et al.
patent: 6499467 (2002-12-01), Morris et al.
patent: 6994273 (2006-02-01), Ganser et al.
patent: 2006/0186227 (2006-08-01), Augustin
patent: 0135872 (1985-04-01), None
patent: HEI9-60565 (1997-03-01), None
patent: 2001-355534 (2001-12-01), None
patent: 2003-28020 (2003-01-01), None
patent: 2005-529264 (2005-09-01), None
patent: 2004/005702 (2004-01-01), None
patent: 2005/085624 (2005-09-01), None
patent: 2006/091429 (2006-08-01), None
European Search Report dated May 23, 2008.
Japan Office Action dated Jun. 30, 2010.

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