Variable valve operating control apparatus for internal...

Details Variable valve operating control apparatus for internal... Variable valve operating control apparatus for internal...

2006-03-14

2006-03-14

Denion, Thomas (Department: 3748)

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

C123S090160, C123S090170, C123S090200, C123S090310

Reexamination Certificate

active

07011055

ABSTRACT:
A centric phase of an operating angle of an engine valve is detected on the basis of an interval between a reference rotational position of a crankshaft and a reference rotational position of a camshaft, and on the other hand, the centric phase is detected at a period shorter than a period between the reference rotational positions, and one of those detected results is selected on the basis of a predetermined regulation, and an opening characteristic of the engine valve is operated on the basis of the selected centric phase.

REFERENCES:
patent: 5937805 (1999-08-01), Matsumura
patent: 6920852 (2005-07-01), Machida
patent: 2003/0145815 (2003-08-01), Miyakoshi
patent: 2004/0015287 (2004-01-01), Ilzuka et al.
patent: 1 306 528 (2003-05-01), None
patent: 1 310 635 (2003-05-01), None
patent: 2000-087769 (2000-03-01), None
U.S. Appl. No. 11/064,100, filed Feb. 23, 2005, Machida et al.

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