Valve system

Details Valve system Valve system

2008-04-07

2010-12-14

Chang, Ching (Department: 3748)

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

C123S090440, C123S090600, C123S090480

Reexamination Certificate

active

07849826

ABSTRACT:
A valve system includes a first valve provided on an intake or exhaust port; a second valve provided on another intake or exhaust port; a first cam unit on a camshaft, defining first and second lobe heights; and a second cam unit on the camshaft, defining a third lobe height. The first cam unit moves the first valve by a distance of either the first or the second lobe height, and the second cam unit moves the second valve by a distance of the third lobe height.

REFERENCES:
patent: 7207300 (2007-04-01), Ezaki et al.
patent: 2001-123811 (2001-05-01), None
patent: 2000-0017311 (2000-03-01), None

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