| 摘要 |
<p>PURPOSE:To allow the engagement and/or disengagement of a clutch to be controlled as required so as to prevent the hydraulic pressure fluctuation from effecting directly on the engaging and/or disengaging force of a clutch by setting both the closing motion of valves and their timing appropriately. CONSTITUTION:A valve V1 21 for the on-off control allows hydraulic pressure from a hydraulic pressure source to be applied to a fluid chamber 5. Two valves 22 (V4) and 23 (V3), which are connected in parallel with each other, are connected with the outlet side of the valve 21, and the outlet side of these valves 22 and 23 is connected with a fluid chamber 4. The valve 22 is effected by the on-off control for a large flow rate, and valve 23 is effected by a duty control which has a good response performance for a small flow rate.</p> |
