| 摘要 |
<p>In order to rapidly achieve a restricted state in a valve opening/closing timing control device provided with a restriction mechanism, the valve opening/closing timing control device is switchable between a first state in which a fluid is supplied to a communication flow path to lift a restriction by a restriction member and release lock by a lock member, a second state in which the fluid is supplied to a retard chamber to release the lock by the lock member and put the restriction by the restriction member, and a third state in which the restriction member is restricted and the lock member is locked without supplying the fluid to the communication flow path and supplying the fluid to the retard chamber, and is configured such that the minimum cross-sectional area of an advance passage for supplying the fluid to an advance chamber is larger than the minimum cross-sectional area of a retard passage for supplying the fluid to the retard chamber.</p> |
