Continuously variable valve actuation system

Details Continuously variable valve actuation system Continuously variable valve actuation system

2009-08-05

2011-12-20

Chang, Ching (Department: 3748)

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

C123S090390, C123S090440, C074S569000

Reexamination Certificate

active

08079334

ABSTRACT:
A continuously variable valve actuation (CVVA) system may include a driving cam rotated by a driving force transmitted from a crankshaft, and a driven cam pressed by the driving cam to be rotated around a first end thereof serving as a rotational axle of the driven cam, wherein the driven cam has a cam face at a second end thereof so as to press and open a valve when rotated, and wherein a vertical distance between the rotational axis of the first end of the driven cam and a rotational axis of the driving cam is configured to be adjusted by moving a position of the rotational axis of the first end of the driven cam.

REFERENCES:
patent: 6886512 (2005-05-01), Naumann

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