Engine valve actuation system

Details Engine valve actuation system Engine valve actuation system

2006-01-24

2006-01-24

Denion, Thomas (Department: 3748)

Internal-combustion engines

Poppet valve operating mechanism

Hydraulic system

C123S090150, C123S19800E, C091S407000, C091S408000

Reexamination Certificate

active

06988471

ABSTRACT:
An engine valve actuation system includes an engine valve moveable between first and second positions, a valve actuation assembly connected to move the engine valve between the first and second positions, a fluid actuator configured to selectively modify a timing of the engine valve in moving from the second to the first position, a source of fluid, and a pair of passages in the cylinder that allow fluid to flow from the chamber to the fluid source. The fluid actuator includes a cylinder and a piston at least partly defining a chamber. The piston is slidably movable in the cylinder between a first position and a second position, and blocks at least a portion of one of the passages at an intermediate position between the second position and the first position to reduce fluid flow from the chamber when the piston moves from the second position toward the first position.

REFERENCES:
patent: 3250068 (1966-05-01), Vulliamy
patent: 4065094 (1977-12-01), Adams
patent: 4150640 (1979-04-01), Egan
patent: 4211107 (1980-07-01), Sleeter et al.
patent: 4296911 (1981-10-01), Escobosa
patent: 4424790 (1984-01-01), Curtil
patent: 4561253 (1985-12-01), Curtil
patent: 4794892 (1989-01-01), Konno
patent: 4815423 (1989-03-01), Holmer
patent: 4869222 (1989-09-01), Klassen
patent: 5000145 (1991-03-01), Quenneville
patent: 5408979 (1995-04-01), Backlund et al.
patent: 5421359 (1995-06-01), Meister et al.
patent: 5445128 (1995-08-01), Letang et al.
patent: 5460131 (1995-10-01), Usko
patent: 5462025 (1995-10-01), Israel et al.
patent: 5531192 (1996-07-01), Feucht et al.
patent: 5537976 (1996-07-01), Hu
patent: 5576963 (1996-11-01), Ribbens et al.
patent: 5577468 (1996-11-01), Weber
patent: 5606940 (1997-03-01), Shafer et al.
patent: 5682854 (1997-11-01), Ozawa
patent: 5692464 (1997-12-01), Kimura
patent: 5927075 (1999-07-01), Khair
patent: 5983863 (1999-11-01), Cavanagh et al.
patent: 5996550 (1999-12-01), Israel et al.
patent: 6006706 (1999-12-01), Kanzaki
patent: 6021758 (2000-02-01), Carey et al.
patent: 6026786 (2000-02-01), Groff et al.
patent: 6067946 (2000-05-01), Bunker et al.
patent: 6082328 (2000-07-01), Meistrick et al.
patent: 6170441 (2001-01-01), Haldeman et al.
patent: 6192841 (2001-02-01), Vorih et al.
patent: 6209516 (2001-04-01), Yamashita
patent: 6237551 (2001-05-01), Macor et al.
patent: 6267107 (2001-07-01), Ward
patent: 6273076 (2001-08-01), Beck et al.
patent: 6279550 (2001-08-01), Bryant
patent: 6301887 (2001-10-01), Gorel et al.
patent: 6301889 (2001-10-01), Gladden et al.
patent: 6302076 (2001-10-01), Bredy
patent: 6302370 (2001-10-01), Schwoerer et al.
patent: 6412457 (2002-07-01), Vorih et al.
patent: 6467452 (2002-10-01), Duffy et al.
patent: 6474277 (2002-11-01), Vanderpoel et al.
patent: 6550433 (2003-04-01), Vorih et al.
patent: 6571765 (2003-06-01), Kuboshima et al.
patent: 6651601 (2003-11-01), Sun et al.
patent: 6651618 (2003-11-01), Coleman et al.
patent: 6688280 (2004-02-01), Weber et al.
patent: 6769385 (2004-08-01), Chang
patent: 6772742 (2004-08-01), Lei et al.
patent: 2003/0164163 (2003-09-01), Lei et al.
patent: 2003/0183185 (2003-10-01), Sun et al.
patent: 05106415 (1993-04-01), None
patent: 2000120457 (2000-04-01), None
patent: 2000145484 (2000-05-01), None
patent: WO 98/02653 (1998-01-01), None
Edwards et al., “The Potential of a Combined Miller Cycle and Internal EGR Engine for Future Heavy Duty Truck Applications,” The Engineering Society for Advancing Mobility Land Sea Air and Space International, International Congress and Exposition, Feb. 23-26, 1998, pp. 1-19.
Obert, “Internal Combustion Engines and Air Pollution,” Based on Internal Combustion Engines, Third Edition, 1973, pp. 612-614.
Challen et al., “Diesel Engine Reference Book, Section Edition,” SAE International, 1999, pp. 75, 81, 84, 146, and 263-305.
Yorihiro Fukuzawa et al., “Development of High Efficiency Miller Cycle Gas Engine”, Mitsubishi Heavy Industries, Ltd., Technical Review, vol. 38, No. 3, Oct. 2001, pp. 146-150.
Request forInter PartesReexamination Transmittal Form for U.S. Pat. 6,688,280, and Attachment to Request for Inter Parties Reexamination Transmittal Form, Sep. 17, 2004.
Request forInter PartesReexamination Transmittal Form for U.S. Pat. 6,651,618, and Attachment to Request for Inter Parties Reexamination Transmittal Form, Aug. 27, 2004.
http://www.mazda.com.au/corpora/209.html, Oct. 16, 2001, p. 1-6.
Specification for U.S. Appl. No. 10/309,312, Engine Valve Actuation System, filed Dec. 4, 2002.
U.S. Patent and Trademark Office Action for U.S. Appl. No. 10/309,312, mailed Dec. 2, 2004.
U.S. Patent and Trademark Office Action for U.S. Appl. No. 10/309,312, mailed Jul. 26, 2004.
U.S. Patent and Trademark Office Action for U.S. Appl. No. 10/309,312, mailed Feb. 24, 2004.

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