| 摘要 |
<p>PROBLEM TO BE SOLVED: To restrict speed change shock, control a speed change time to a prescribed time, and realize a speed change with less discomfort to occupant by setting a turbine angle speed, the actuation pressure of a frictional member regarding from the turbine torque to the speed change, and the reduction quantity of a torque within a realistic range. SOLUTION: When a speed change instruction is issued during up-shift, calculation is performed by means of an ATCU7 after a prescribed time or at the time when the torque of an engine 1 start reducing. That is, a turbine rotation speed, a turbine torque, and an output shaft torque are obtained, and an assumptivce transmission torque is obtained from the obtained turbine rotation speed, the turbine torque, and a prescribed speed change time. The difference between the assumptive transmission torque and the output shaft torque is obtained, and positive pr negative is judged. By this judgment, the output shaft torque is assumed as the upper value of the assumptive transmission torque, and the torque while in speed change is identical to the torque before speed change or is reduced and determined. Thereby, the speed change with less discomfort to clews can be realized.</p> |
