Valve timing adjusting device

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

Reexamination Certificate

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Details

C123S090110, C123S090170

Reexamination Certificate

active

06848401

ABSTRACT:
A valve timing adjusting device adjusts valve timing by shifting rotational phase of a camshaft relative to a crankshaft. The device has an electric motor for rotating a rotor member that drives and moves a phase defining member to a required position. The phase defining member defines the rotational phase of the camshaft in accordance with the position itself. The phase defining member may be a planetary gear rotatably supported on an eccentric shaft as the rotor member. The planetary gear works as both a reduction mechanism and a phase shifting mechanism. The phase defining member may be a control pin slidably supported on a rotatable member as the rotor member. A planetary gear may be additionally used as the reduction mechanism for rotating the rotatable member. It is possible to control the phase with high accuracy and durability.

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patent: 20020100444 (2002-08-01), Todo et al.
patent: 20020100446 (2002-08-01), Watanabe
patent: 4-105906 (1992-09-01), None
patent: 2001-041013 (2001-02-01), None
patent: 2002-227616 (2002-08-01), None

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