| 摘要 |
PURPOSE:To make clutch termination full at low speed rotation and improve air to fuel ratio by providing a clutch full termination control valve that sets a starting valve to the start or full termination oil pressure status depending upon the case where the car speed is below or exceeds the full termination car speed. CONSTITUTION:A clutch full termination control valve 108 has a rod 182 at the left side below the full termination car speed and at the right side beyond the same car speed. Thus, a starting valve 116 controls the start pressure of a port 204a at the start oil pressure adjustment status so as to correspond to the engine rotating speed signal oil pressure that is actuated on a port 204d. Since this start pressure is supplied to a clutch 36 for advance through a manual valve 104, the clutch actuation pressure is raised depending upon the engine rotating speed. When a car reaches the car speed exceeding the preset one, the control valve 108 is switched and supplies the drive pulley rotating speed signal oil pressure to a port 204e through an oil path 190. As a result, the start pressure of the port 204a is raised to the full termination oil pressure adjustment status and a clutch 4 can fully be terminated and run even at low speed rotation. |
