| 摘要 |
PURPOSE:To suppress change gear shock by changing the control of the line pressure that is supplied to a working pressure supply means to a frictional engaging element according to a driving condition of a system, or to a running condition and a change gear working period, or to a change gear state. CONSTITUTION:Charge gear actuation, running condition, and change gear state are detected by a first through third detection means, and the line pressure control is decided by a control decision means based on the running condition, as well as compensating the change gear state so as to determine the line pressure compensation by a decision means, updating and recording, making it correspondent to the certain change gear actuation by a correction means, then, correction is made according to the running condition as well as compensation of the line pressure control is made by a control compensation means. The line pressure to be supplied to a working pressure supply means is controlled by a control means based on the compensated line pressure control in certain change gear actuation, so as to supply the controlled working pressure to a frictional engaging element. Change gear shock is thus suppress and abrasion of the frictional engaging element can be reduced. |
