Variable valve timing control device

Internal-combustion engines – Poppet valve operating mechanism – With means for varying timing

Reexamination Certificate

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Details

C123S090170, C123S090310, C464S160000

Reexamination Certificate

active

06994062

ABSTRACT:
A variable valve timing control device includes a rotor member integrally connected to either one of a camshaft and a crankshaft, a housing member connected to either one of the crankshaft and the camshaft via a driving force transmitting member and assembled to the rotor member so as to be rotatable relative thereto, a vane, a fluid pressure chamber divided into an advanced angle chamber and a retarded angle chamber by the vane, and a sensor wheel assembled to either one of the rotor member and the housing member and including a projecting portion for detecting a rotational angle of the rotor member or the housing member by using a sensor provided adjacent to the sensor wheel. The sensor wheel includes at least one reference hole for determining a position of the projecting portion in a circumferential direction of the sensor wheel.

REFERENCES:
patent: 5715780 (1998-02-01), Haller
patent: 6609498 (2003-08-01), Mathews et al.
patent: 6729280 (2004-05-01), Muraki
patent: 6827052 (2004-12-01), Kobayashi et al.
patent: 2002/0062802 (2002-05-01), Saito et al.
patent: 2003/0221647 (2003-12-01), Kobayashi et al.
patent: 2002-227622 (2002-08-01), None

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