| 摘要 |
PURPOSE:To attain transmission characteristics that the transmission is quiet at the low speed of a vehicle and importance is attached to acceleration performance at the high speed of the vehicle, by downshifting a transmission control valve through the operation of a shifting cam at the time of kick-down acceleration below a set vehicle speed, and more downshifting the valve at said time above the set vehicle speed independently of the operation of the cam. CONSTITUTION:Below a set vehicle speed V0, a vehicle speed switch 62 is off, a signal with a high level is generated and the output of a NOR gate 64 is put on a low level so that an actuator 61 is put out of action independently of kick- down operation. At the time of the kick-down operation, an operating member 48 is pushed in by a shifting cam 51 so that a transmission control valve 44 is downshifted. When the kick-down operation is performed above the set vehicle speed V0, switches 62, 63 are both turned off so that the actuator 61 is put into action. At that time, the operating member 48 is pushed in by the actuator 61 independently of the shifting cam 51 so that the transmission control valve 44 is downshifted. |
