| 摘要 |
PROBLEM TO BE SOLVED: To perform good speed change suited to the engaging operation state of an engaging element, by correcting the specified time in a next stage invalid stroke charging stage in the next speed change on the basis of the engaging state of the next stage engaging element in a next stage engaging stage. SOLUTION: In the first speed change command, a command is output to maximize oil pressure only for the first time Tm1, oil pressure is quickly supplied to a next stage engaging element, and invalid stroke charging is performed. When the invalid stroke charging stage is finished, oil pressure is decreased to the specified oil pressure, and the engagement of the next stage engaging element is performed. By this engagement, the ratio of input and output revolutions of the next engaging element is changed, the change ratio of the ratio of input and output revolutions to the time when the ratio of input and output revolutions is changed by the specified value is found, the change ratio is compared with the reference change ratio, and the invalid stroke charging time Tm in the next speed change is corrected on the basis of the compared result. |
