Patent ID: 6053139
Filing Date: 2000-04-25
Classification: F01L

Abstract:
A valve timing control device comprising:a rotary shaft rotatably assembled within a cylinder head of an internal combustion engine;a rotational transmitting member mounted around the peripheral surface of the rotary shaft so as to rotate relative thereto within a predetermined range for transmitting a rotational power from a crank shaft;a vane provided on either of the rotary shaft or the rotational transmitting member;a pressure chamber formed between the rotary shaft and the rotational transmitting member, and divided by the vane into an advance chamber and a delay chamber;a first fluid passage for supplying and discharging a fluid to and from the advance chamber;a second fluid passage for supplying and discharging a fluid to and from the delay chamber;a locking mechanism for holding the rotary shaft and the rotational transmitting member at a middle position of the predetermined range, when the internal combustion engine starts; anda controlling mechanism for restricting the rotational transmitting member from rotating around the rotary shaft within a range between the middle position and an end position of the predetermined range.