| 摘要 |
The present invention relates to a device for controlling an automatic transmission including a first frictional engagement element that is engaged at a first gear shift stage and is released at a second gear shift stage. When a request for a gear shift from the second gear shift stage to the first gear shift stage during a gear shift from the first gear shift stage to the second gear shift stage is present, occurrence of a shock and an engine rotation rise is suppressed. After the gear shift from the first gear shift stage to the second gear shift stage is finished (S1), a stroke rate of a piston that is actuated to press friction discs of the first frictional engagement element is calculated (S2), and the stroke rate calculated is compared with a predetermined stroke threshold value (S3). When the stroke rate calculated becomes equal to or smaller than the stroke threshold value, the gear shift from the second gear shift stage to the first gear shift stage is started. |
