Method and apparatus for controlling variable valve...

Details Method and apparatus for controlling variable valve... Method and apparatus for controlling variable valve...

2006-03-27

2008-12-02

Denion, Thomas E (Department: 3748)

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

C123S090150, C123S345000, C123S346000, C123S347000, C123S348000, C701S103000, C701S105000

Reexamination Certificate

active

07458348

ABSTRACT:
In a V-type engine provided with a variable valve timing mechanism and variable valve lift mechanism for an intake valve, a torque difference between respective banks is obtained. In a region in which an opening area of the intake valve is larger than a threshold, valve timing of the intake valve by the variable valve timing mechanism is corrected so as to reduce the torque difference, whereas in a region in which the opening area of the intake valve is smaller than the threshold, lift characteristics of the intake valve by the variable valve lift mechanism is corrected so as to reduce the torque difference.

REFERENCES:
patent: 6843230 (2005-01-01), Iizuka et al.
patent: 6851409 (2005-02-01), Machida et al.
patent: 6863050 (2005-03-01), Iizuka et al.
patent: 7077085 (2006-07-01), Arai et al.
patent: 7191050 (2007-03-01), Machida
patent: 11-82073 (1999-03-01), None
patent: 11-210510 (1999-08-01), None

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