| 摘要 |
<P>PROBLEM TO BE SOLVED: To quickly engage friction engagement elements as a motor starts up, and to quickly release the engagement of the friction engagement elements as the motor stops. <P>SOLUTION: The upstream side 57 of a bypass oil path bypasses a linear solenoid valve SLC1 and is connected to an oil path 52 for drive pressure, and the downstream side 58 of the bypass oil path is connected through a check valve 84 to an oil path 55 for the discharge port of an electromagnetic pump 60. A C1 relay valve 70 is configured in such a manner that, when a modulator pressure PMOD acting on a port 72a for a first signal pressure is higher than or equal to a set pressure, the C1 relay valve makes the connection between the linear solenoid valve SLC1 and a clutch C1 and breaks the connection between the upstream side 57 and the downstream side 58 of the bypass oil path, and when the modulator pressure PMOD is not higher than or equal to the set pressure, the C1 relay valve 70 makes the connection between the electromagnetic pump 60 and the clutch C1 and also makes the connection between the upstream side 57 and the downstream side 58 of the bypass oil path. <P>COPYRIGHT: (C)2012,JPO&INPIT |
