| 摘要 |
A control valve part switches a flowing direction of working fluid between a first advance chamber and a first retard chamber in a timing adjustment mode, and restricts working fluid from flowing between the first advance chamber and the first retard chamber in a working angle adjustment mode. A check valve part allows working fluid to flow from a second retard chamber through a check passage to a second advance chamber, and restricts working fluid from flowing from the second advance chamber through the check passage to the second retard chamber. A switch valve part allows a communication between the second advance chamber and the second retard chamber through a switch passage in the working angle adjustment mode, and prohibits the communication between the second advance chamber and the second retard chamber through the switch passage in the timing adjustment mode.
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