Valve timing control device

Details Valve timing control device Valve timing control device

1997-12-23

1998-11-17

Ferensic, Denise L.

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

123 9031, 74568R, 464 2, F01L 134

Patent

active

058362770

ABSTRACT:
A valve timing control device includes a rotation shaft for opening and closing a valve, a rotation transmitting member rotatably mounted on the rotation shaft, a vane connected to one of the rotation shaft and the rotation transmitting member, a chamber defined between the rotation shaft and the rotation transmitting member and divided into a first pressure chamber and a second pressure chamber by the vane extending into the chamber, a first fluid passage in fluid communication with the first pressure chamber for supplying and discharging the fluid therein and therefrom, respectively, a second fluid passage in fluid communication with the second pressure chamber for supplying and discharging the fluid therein and therefrom, a retracting hole formed on one of the rotation shaft and the rotation transmitting member, a locking pin slidably fitted in the retracting hole and urged toward the other of the rotation shaft and the rotation transmitting member, a receiving hole formed on the other of the rotation shaft and the rotation transmitting member and in which a part of the locking pin is fitted when the relative phase between the rotation shaft and the rotation transmitting member is in a predetermined phase, and a third fluid passage in fluid communication with the receiving hole only when the relative phase between the rotation shaft and the rotation transmitting member is in the predetermined phase.

REFERENCES:
patent: 4858572 (1989-08-01), Shirai et al.
patent: 5377638 (1995-01-01), Mueller
patent: 5450825 (1995-09-01), Geyer et al.
patent: 5666914 (1997-09-01), Ushida et al.
patent: 5722356 (1998-03-01), Hara

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