| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a hydraulic controller of a power transmission device controlling a forward/backward movement switching mechanism and a torque converter by one solenoid valve and preventing the V-belt of a transmission from slipping. <P>SOLUTION: This hydraulic controller 9 comprises the transmission, the forward/backward movement switching mechanism 6 installed between an input shaft 2 into which the power of a prime mover is inputted and the transmission, the torque converter 3 having a direct-coupling mechanism 5 transmitting a power between the output shaft and the input shaft 2 of the prime mover, and a solenoid valve 11 generating control pressure by regulating an original pressure. The switching means 14 switches a hydraulic pressure supplied to the forward/backward movement switching mechanism 6 to a low pressure in deceleration operation while the direct-coupling mechanism 5 is controlled by the solenoid valve 11. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
