Valve control system for internal combustion engine

Details Valve control system for internal combustion engine Valve control system for internal combustion engine

2006-03-21

2006-03-21

Denion, Thomas (Department: 3748)

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

C123S090170, C123S090310, C123S347000

Reexamination Certificate

active

07013853

ABSTRACT:
A valve control system for an internal combustion engine, which enables the operating mode of a valve system to be switched in optimal timing while preventing the driver from feeling the switching operation so busy and at the same time securing feeling of acceleration, thereby improving drivability. A variable valve-actuating mechanism is capable of selectively switching the operating mode of a valve system including intake valves and an exhaust valve between a plurality of operating modes different in output characteristics. Whether or not the operating mode of the valve system should be switched is determined. The execution of the switching of the operating mode of the valve system based on the determination is suppressed according to a degree of suppression set depending on detected load on the engine.

REFERENCES:
patent: 6352061 (2002-03-01), Takahashi
patent: 6491022 (2002-12-01), Okamoto
patent: 6718920 (2004-04-01), Hoshino et al.

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