Variable valve mechanism and intake air amount control...

Details Variable valve mechanism and intake air amount control... Variable valve mechanism and intake air amount control...

2005-10-04

2005-10-04

Denion, Thomas (Department: 3748)

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

C123S090150

Reexamination Certificate

active

06951195

ABSTRACT:
A variable valve mechanism of an internal combustion engine capable of changing at least one of two valve physical quantities, i.e., valve operation angle and valve lift, has a valve lift adjustment mechanism that adjusts the at least one valve physical quantity with a higher precision in a region where the at least one valve physical quantity is relatively small than in a region where the at least one valve physical quantity is relatively large. Therefore, a size increase of the variable valve mechanism can be avoided, and the mechanism can easily be incorporated into the engine.

REFERENCES:
patent: 4850311 (1989-07-01), Sohn
patent: 5937806 (1999-08-01), Lyko et al.
patent: 6647935 (2003-11-01), Aoyama et al.
patent: A 5-18221 (1993-01-01), None
patent: A 2001-263015 (2001-09-01), None

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