Valve timing control apparatus for internal combustion...

Details Valve timing control apparatus for internal combustion... Valve timing control apparatus for internal combustion...

2006-03-14

2006-03-14

Denion, Thomas (Department: 3748)

Internal-combustion engines

Poppet valve operating mechanism

Camshaft drive means

C123S090150, C123S090170

Reexamination Certificate

active

07011060

ABSTRACT:
In a structure in which an opening-and-closing timing of an intake valve and/or an exhaust valve is varied due to a rotational phase of a camshaft with respect to a crankshaft of an internal combustion engine being varied, the rotational phase is detected at each rotational period of the camshaft on the basis of a reference rotational position of the crankshaft and a reference rotational position of the camshaft which have been detected, and on the other hand, the rotational phase is detected in an arbitrary timing regardless of the rotational period of the camshaft. Further, a correction value for correcting the rotational phase detected in an arbitrary timing is learned with the rotational phase detected at each rotational period of the camshaft as a reference.

REFERENCES:
patent: 6718922 (2004-04-01), Yasui
patent: 2000-303865 (2000-10-01), None

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