| 摘要 |
A valve timing control device for an engine comprises a rotatable shaft (210) for controlling valve opening and closing of the engine, and a rotation transmitting member (260) the rotatably mounted on the rotatable shaft (210). The rotatable shaft (210) and the rotation transmitting member (260) define therebetween at least one chamber (R0) which is divided into one or more first pressure chambers (R1) and one or more second pressure chambers (R2) by one or more vanes (240) which are mounted on the rotatable shaft (210) or on the rotation transmitting member (260) and which extend into the chamber (RO). A fluid supply means (111) selectively supplies fluid under pressure to the or each first pressure chamber (R1) or to the or each second pressure chamber (R2) to control the timing of the engine. Locking means (250) are provided for connecting together the rotatable shaft (210) and the rotation transmitting member (260) when the relative rotation between the rotatable shaft (210) and the rotation transmitting member (260) is in a predetermined phase. The locking pin (250) defines, with the bore (233), a fluid chamber (R3) which communicates with the other of the first and second pressure chambers (R1,R2) via a fluid passage (234) when the locking pin (250) is extended from the bore (233) into the receiving recess (222), the communication via the fluid passage (23) being restricted, and movement of the locking pin damped, when the locking pin (250) is received fully within the bore (233). <IMAGE> |
