| 摘要 |
PURPOSE:To properly control the return of an engine torque by detecting the velocity of speed change, and by learning and correcting a command timing for returning of the engine torque according to the comarison of the detected velocity and a reference. CONSTITUTION:The actually performed velocity of speed change is detected, and is compared with a reference. The velocity of speed change can be detected, for example, by examining the time spent from a command timing for torque return, up to the speed change is completed. When the velocity is fast, the condition is satisfied slightly before the completion of the speed change, whereas, when the velocity after speed change is slow, the condition is satisfied well before the completion of the speed change. The velocity of the speed change is thus estimated by measuring the time from the command timing for return to the completion of the transmission. Learning and correction are performed from the next speed change on, in such a way that the command for torque return is given as fast as the detected velocity of the speed change is faster. In the same manner, when the velocity is slow, the command is given slowly. Difference in synchronism is torque and completion of speed change can thus be prevented easily, and certainly, whereby speed change shock can be reduced. |
