Variable valve operating device and valve opening amount...

Details Variable valve operating device and valve opening amount... Variable valve operating device and valve opening amount...

2006-09-22

2010-10-19

Chang, Ching (Department: 3748)

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

C123S090170, C123S090390, C123S345000, C074S569000

Reexamination Certificate

active

07814873

ABSTRACT:
The present invention relates to a variable valve operating device and a valve opening amount adjustment method, and can accurately control the amount of in-cylinder air and the strength of a swirl flow. The variable valve operating device according to the present invention includes a valve mechanism that can select a dual valve variable control mode in which the valve opening amounts of a first valve and a second valve, which are of the same type and provided for the same cylinder, can be varied continuously or in multiple steps. A valve opening amount difference is provided when the valve opening amounts are minimized in the dual valve variable control mode so that the valve opening amount of the first valve is larger than that of the second valve. In addition, adjustments are made so that the minimum valve opening amount of the first valve does not vary from one cylinder to another.

REFERENCES:
patent: 6769387 (2004-08-01), Hayman et al.
patent: U 58-90306 (1983-06-01), None
patent: U 63-69730 (1988-05-01), None
patent: A 2001-329907 (2001-11-01), None
patent: A 2003-161118 (2003-06-01), None
patent: A 2004-100555 (2004-04-01), None

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