Valve timing control device

Details Valve timing control device Valve timing control device

1997-05-15

1998-11-17

Lo, Weilun

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

123 9031, 74568R, 464 2, F01L 1344, F01L 1300

Patent

active

058362754

ABSTRACT:
A valve timing control device has a first pressure chamber and a second pressure chamber to rotate vanes mounted on a rotor and a fluid supplying means for supplying fluid under pressure to at least a selected one of the first pressure chamber and the second pressure chamber in order to control valve timing. The device further includes a locking means for connecting a housing member and the rotor and a canceling means for canceling the operation of the locking means. The canceling means cancels the locking means before the fluid supplying means supplies fluid under pressure to the first pressure chamber or the second pressure chamber, so that the locking means is canceled completely before the vanes rotate.

REFERENCES:
patent: 4858572 (1989-08-01), Shirai et al.
patent: 5361735 (1994-11-01), Butterfield et al.
patent: 5367992 (1994-11-01), Butterfield et al.
patent: 5666914 (1997-09-01), Ushida et al.

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