Method for controlling a variable event valvetrain

Details Method for controlling a variable event valvetrain Method for controlling a variable event valvetrain

2005-07-07

2008-12-30

Eshete, Zelalem (Department: 3748)

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

C123S090160

Reexamination Certificate

active

07469667

ABSTRACT:
A method for controlling a variable event valvetrain during engine start and stop is presented. According to the method, valve lift and/or timing can be adjusted to reduce the amount of oxygen pumped into an exhaust gas after treatment system. The method can reduce engine emissions, at least during some conditions, since there may be less oxygen available to alter the operating state of the exhaust gas after treatment system.

REFERENCES:
patent: 4811231 (1989-03-01), Hataoka et al.
patent: 4964318 (1990-10-01), Ganoung
patent: 6474291 (2002-11-01), Collins et al.
patent: 6609365 (2003-08-01), Almkvist et al.
patent: 6705257 (2004-03-01), Shimizu
patent: 6837040 (2005-01-01), Sonoda et al.
patent: 6850831 (2005-02-01), Buckland et al.
patent: 6938598 (2005-09-01), Lewis et al.
patent: 7011075 (2006-03-01), Lewis
patent: 7021289 (2006-04-01), Lewis et al.
patent: 7047126 (2006-05-01), Lewis
patent: 7055483 (2006-06-01), Lewis et al.
patent: 7194993 (2007-03-01), Lewis et al.
patent: 2003/0101952 (2003-06-01), Uehara et al.
patent: 2003/0106515 (2003-06-01), Kondo
patent: 2004/0149251 (2004-08-01), Nishikawa et al.
patent: 2005/0066933 (2005-03-01), Kaita et al.
patent: 2005/0066934 (2005-03-01), Kawamura
patent: 2005/0211227 (2005-09-01), Mizutani
patent: 02221649 (1990-09-01), None
Abstract, JP 02221649 A.
SAE 2001-01-0581; “Air Charge Estimation In Camless Engines”; van Nieuwstadt et al.; Detroit, MI; Mar. 5-8, 2001.
SAE 2000-01-1227; “The Third Generation of Valvetrains—New Fully Variable Valvetrains for Throttle-Free Load Control”; Flierl et al.; BMW Group.
SAE 960584; “Comparison of Variable Camshaft Timing Strategies at Part Load”; Leone et al.; Ford Motor Co.; 1996.
SAE 2004-01-1268; “Comparison of Dual Retard VCT to Continuously Variable Event Valvetrain”; Jung et al.; Detroit, MI, Mar. 8-11, 2004.
U.S. Appl. No. 10/805,654, filed Mar. 19, 2004, Donald Lewis et al.

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