Variable compression ratio system for internal combustion...

Details Variable compression ratio system for internal combustion... Variable compression ratio system for internal combustion...

2006-06-13

2006-06-13

McMahon, Marguerite (Department: 3747)

Internal-combustion engines

Adjustable combustion chamber

Piston in head adjusted

Reexamination Certificate

active

07059280

ABSTRACT:
A variable compression ratio system for an internal combustion engine, including a variable compression ratio mechanism for continuously varying a compression ratio of the engine, the variable compression ratio mechanism including a control shaft rotatably moveable to a rotational position corresponding to the compression ratio, a hydraulic actuator driving the control shaft to the rotational position depending on operating conditions of the engine, a hydraulic pressure source mechanically driven by the engine to produce a hydraulic pressure supplied to the hydraulic actuator, and a hydraulic control for variably controlling the hydraulic pressure supplied to the hydraulic actuator on the basis of the engine operating conditions.

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patent: 6516757 (2003-02-01), Aoyama et al.
patent: 6595186 (2003-07-01), Hiyoshi et al.
patent: 6604495 (2003-08-01), Moteki
patent: 6691655 (2004-02-01), Aoyama et al.
patent: 2002-115571 (2002-04-01), None

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