| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a valve device for preventing a shock torque of a clutch capable of properly control the duration time which is the time from releasing of stepping into a clutch pedal to connecting to an engine and a transmission despite the change in viscosity of a working fluid. SOLUTION: When a thrust by a differential pressure of the working fluid subjected to a removable valve body 57 is small since the low actual viscosity of the working fluid is low, the movable valve body 57 comes in contact with a fixed valve body 55 and the working fluid is refluxed via a throttle hole with a large diameter 53a and a throttle hole with a small diameter (fully throttled) 53b into a master cylinder 11. When the thrust by the differential pressure of the working fluid subjected to the movable valve body 57 is large since the actual viscosity of the working fluid is high, the movable valve body does not come in contact with the fixed valve body 55 and the working fluid is refluxed via the throttle hole with large diameter 53a and a step part 62 into the master cylinder 11.</p> |
