| 摘要 |
PURPOSE:To reduce shift shocks with a simple structure by obtaining desired oil pressure as a function of the output from a torque detecting means to control oil pressure supplied to an oil pressure actuator so that the output from an oil pressure detecting means coincides with the desired oil pressure. CONSTITUTION:When the D or R range is judged by an inhibitor switch 3 the duty is set to 0% to maximize clutch pressure. When either of requirements for a predetermined time T1 and predetermined pressure P1 is satisfied, a timer is reset to obtain the desired oil pressure of clutch pressure in the engine torque on the forward of backward stage and output a driving signal for controlling duty to an electromagnetic valve 5 for slignment with the oil pressure. On the other hand, in the duty control of the clutch pressure by the electromagnetic valve 5, when either of requirements for a predetermined time T2 and predetermined clutch pressure P2 is satisfied, the duty ratio for the electromagnetic valve 5 is set to 0%. Thus, the clutch pressure is stepwise increased to reach the desired pressure and reduce shift shocks. |
