Variable valve timing device adapted for internal combustion...

Details Variable valve timing device adapted for internal combustion... Variable valve timing device adapted for internal combustion...

2008-01-01

2008-01-01

Chang, Ching (Department: 3748)

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

C123S090390, C123S090440

Reexamination Certificate

active

07314029

ABSTRACT:
A variable valve timing device, adapted for an internal combustion engine, includes a cam shaft having a first cam surface, a rocker arm rotatably supporting a first roller and enabling a valve to be opened by its swing movement when the first roller is pressed, a drive link rotatably supporting a second roller and moving to drive a connecting pin when the second roller is pressed by the first cam surface, a swing cam having a second cam surface and being swingable at a center of a stationary support shaft, when it is pressed by the drive link through the connecting pin, so that the second cam surface presses the first roller, and an actuator for changing a position of a third cam surface to vary a position of the drive link.

REFERENCES:
patent: 6907852 (2005-06-01), Schleusener et al.
patent: 7240649 (2007-07-01), Hara et al.
patent: 11-107725 (1999-04-01), None

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