| 摘要 |
PURPOSE:To perform correct speed change control by providing a teeth number ratio updating means using the teeth number ratio calculated by a teeth number ratio learning means as the true teeth number ratio to update the teeth number ratio when the teeth number ratio calculated by the teeth number ratio learning means is different from the stored teeth number ratio. CONSTITUTION:When a car is judged to be in the ordinary running stage by an electronic controller 90, the teeth number ratio of a speed change gear train is calculated by a teeth number ratio learning means based on the input shaft rotating speed detected by an input shaft rotating speed sensor 98 and the ring gear rotating speed detected by an output side rotating speed sensor 100, if the teeth number ratio calculated by the teeth number ratio learning means differs from the previously stored teeth number ratio, the teeth number ratio calculated by the teeth number ratio learning means is used as the true teeth number ratio by a teeth number ratio updating means to update the teeth number ratio. Even if the initially set memory of the teeth number ratio is wrong, it is automatically updated to a correct one, the output shaft rotating speed is correctly calculated, and speed change control is correctly performed. |
