Valve timing control device

Details Valve timing control device Valve timing control device

1997-03-28

1998-07-07

Lo, Weilun

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

123 9031, F01L 1344

Patent

active

057752796

ABSTRACT:
A valve timing control device comprising a rotor fixed on a cam shaft of an engine, a housing member rotatably mounted on the cam shaft so as to surround the rotor is disclosed. The valve timing control device also comprises a chamber defined between the housing member and the rotor and having a pair of circumferentially opposed walls, a vane mounted on the rotor and extended outwardly therefrom, in the radial direction into the chamber so as to divide the chamber into a first pressure chamber and a second pressure chamber, 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 and a force means for expanding one of the first pressure chamber and the second pressure chamber.

REFERENCES:
patent: 5181484 (1993-01-01), Kan et al.
patent: 5666914 (1997-09-01), Ushida et al.

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