| 摘要 |
PURPOSE:To simplify the clutch switching control system by providing an electromagnetic switch valve for supplying hydraulic pressure regulated by an electromagnetic regulating valve to the clutch actuators which function to connect or disconnect the clutches. CONSTITUTION:The first control valve 35 and second control valve 36 are provided to control the connection and disconnection of clutches 5, 6. There is also provided a clutch controlling electromagnetic valve 43 to control the supply of hydraulic pressure to pistons 40, 41 and switch the supply of hydraulic pressure to the two clutch actuators 8, 10. The input port 43a of said electromagnetic valve 43 is connected to a control pressure circuit 44, which is turn is connected to a pressure line 34a via a pressure control valve 45. In order to control this pressure control valve 44, there is provided a linear control pilot valve 47 which receives hydraulic pressure from a pressure line 34a and builds up hydraulic pressure proportional to the value of input current. |
