Fuel injector using two piezoelectric devices

Details Fuel injector using two piezoelectric devices Fuel injector using two piezoelectric devices

2006-07-18

2006-07-18

Yu, Justine R. (Department: 3751)

Valves and valve actuation

Electrically actuated valve

Having element dimensionally responsive to field

C239S102200, C310S328000

Reexamination Certificate

active

07077379

ABSTRACT:
A fuel injector uses two or more individual piezoelectric devices. A first piezoelectric device is used to actuate a valve which allows pressurized fuel to pass from a pressure chamber through an outlet port. The fuel is pressurized by a second piezoelectric device. In certain applications, a return piezoelectric device is arranged in opposing configuration to the first piezoelectric device so that the valve can be positively moved both into its opened and closed positions rather than depending on the return force of a spring.

REFERENCES:
patent: 4437644 (1984-03-01), Wilmers
patent: 4593658 (1986-06-01), Moloney
patent: 4739929 (1988-04-01), Brandner et al.
patent: 4813601 (1989-03-01), Schwerdt et al.
patent: 4927084 (1990-05-01), Brandner et al.
patent: 5094429 (1992-03-01), Dostert
patent: 5203537 (1993-04-01), Jacobs et al.
patent: 5335861 (1994-08-01), Matusaka
patent: 5779149 (1998-07-01), Hayes, Jr.
patent: 5816780 (1998-10-01), Bishop et al.
patent: 6042345 (2000-03-01), Bishop et al.
patent: 6240905 (2001-06-01), Boecking
patent: 6291929 (2001-09-01), Heinz et al.
patent: 6411009 (2002-06-01), Jaenker
patent: 6644280 (2003-11-01), Rodriguez-Amaya et al.
patent: 6725838 (2004-04-01), Shafer et al.
patent: 6840466 (2005-01-01), Igashira et al.
patent: 6928986 (2005-08-01), Niethammer et al.
patent: 6930438 (2005-08-01), Cramer et al.
patent: 2004/0003786 (2004-01-01), Gatecliff et al.
A Thesis entitled “A Comprehensive Piezoceramic Actuator Review and Its Application to the Design of a Direct-Injection Fuel Injector” by Christohper J. Taylor, Sep. 2002.
“Thunder White Paper”, published 2001 by Face International Corporation.
“Application Notes”, published 2002 by Face International Corporation.

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