| 摘要 |
<p>PURPOSE:To decrease a speed change shock, etc., with a simple structure in a clutch for making speed change control and torque transmission. CONSTITUTION:A direct clutch 70 for making speed change control and torque transmission is constituted in a stationary type oil pressure cylinder structure and in a two-step cylinder structure. An oil passage 90 under a line pressure is communicated with a solenoid valve 91 to be switched to either its state of oil supply or oil discharge, that solenoid valve 91 is communicated with one side oil pressure chamber 72b via the oil passage 95 under the first clutch pressure and it is communicated with the other side oil pressure chamber 72a via the oil passage 99 under the second clutch pressure, an accumulator 96 which holds the first clutch pressure low for a prescribed period of time is arranged aside to the oil passage 95 under the first clutch pressure and a switching control valve 98 for increasing/decreasing the second clutch pressure in response to the magnitude of the first clutch pressure is arranged aside to the oil passage 99 under the second clutch pressure.</p> |
