| 摘要 |
PURPOSE:To optimize the control at the time of carrying out lock-up and the start of speed change at the same timing by carrying out both the start of speed change and lock-up based on that a torque converter entered a coupling zone and that the condition of reaching the start of speed change taking a defined delay into account is satisfied. CONSTITUTION:At the time of starting a vehicle with the maximum gear ratio, at the point of time when a torque converter 12 enters a coupling zone and a speed change starting condition taking a defined delay into account is reached, the lock-up and the start of speed change are nearly simultaneously carried out eliminating delay in hydraulic system, to carry out shift-up under a lock-up condition. Thereby, the simultaneous control of the lock-up and the start of speed change can be accurately performed. |
