Internal-combustion engines – Engine speed regulator – By changing valve timing
Reexamination Certificate
2006-12-26
2006-12-26
Argenbright, T. M. (Department: 3747)
Internal-combustion engines
Engine speed regulator
By changing valve timing
C123S090150, C123S090170
Reexamination Certificate
active
07152578
ABSTRACT:
An electronic controller variably controls the center of an operating angle of an intake valve as follows: when an engine load factor is equal to or higher than a threshold in a low load operation, the electronic controller advances the center of the operating angle with a decrease in the engine load factor. When the engine load factor is lower than the threshold in the low load operation, the electronic controller retards the center of the operating angle with a decrease in the engine load factor.
REFERENCES:
patent: 6397800 (2002-06-01), Nohara et al.
patent: 6615775 (2003-09-01), Takemura et al.
patent: A 2001-263015 (2001-09-01), None
Argenbright T. M.
Toyota Jidosha & Kabushiki Kaisha
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