| 摘要 |
PURPOSE: To improve control accuracy by predicting the actual pressure based on the target value of specified pressure generated by pressure generating means generating a specified pressure through regulation of the discharge pressure of an oil pump, and deciding the control rate for controlling operation pressure by operation pressure generation means by the use of the predicted pressure. CONSTITUTION: When a shift command is outputted, in a controller 300, the base flow rate passing a duty solenoid valve DSV when the valve is fully opened is obtained from a map according to a line pressure. An oil temp. compensation coefficient is then read from the map, the compensation value of flow rate is obtained by multiplying the base flow rate by the coefficient, and the compensation flow rate is calculated to calculate the total flow rate. Precharge control is carried out until the total flow rate exceeds a specified value. Line pressure is predicted according to the target value set by the control for generating the line pressure corresponding to the opening or throttle or the like, and the line pressure is used for calculating the base flow rate by the precharge control. |
