Internal-combustion engines – Poppet valve operating mechanism – With means for varying timing
Reexamination Certificate
2007-07-17
2007-07-17
Denion, Thomas (Department: 3748)
Internal-combustion engines
Poppet valve operating mechanism
With means for varying timing
C123S090170, C123S090310, C123S090150
Reexamination Certificate
active
11084255
ABSTRACT:
There is provided a variable valve control system for an internal combustion engine, including an intake valve event and lift control mechanism capable of varying an operation angle of an intake valve of the engine; an intake valve timing control mechanism capable of varying a center phase of the operation angle of the intake valve; a detection unit to detect a malfunction in the intake valve timing control mechanism; and a fail-safe unit to control the intake valve event and lift control mechanism upon detection of the malfunction in the intake valve timing control mechanism in such a manner that intake valve opening timing becomes advanced with respect to top dead center.
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U.S. Appl. No. 10/953,365, filed Sep. 30, 2004, Shindou.
Denion Thomas
Eshete Zelalem
Nissan Motor Co,. Ltd.
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