摘要 |
PURPOSE:To prevent a speed change shock by outputting a shift down signal by delaying the time set by a timer after outputting a lock up release signal/ if the rotational frequency is in downward tendency when a shift down signal is generated in the lock up state. CONSTITUTION:The titled control device is adapted to intermittently operate a lock up mechanism A provided on a torque converter by controlling lock up electromagnet means B, an operate a geared speed change mechanism C to change speed by controlling a speed change electromagnetic means D. In this case, when a shift down signal Cp' is output from speed change control means E in the lock up state, according to an output of rotational frequency change condition detection means G, if the rotational frequency of an engine output shaft is in upward tendency, a lock up release signal Cq' is output in synchronization with the signal Cp', and if it is downward tendency, after outputting the signal Cq', the signal Cp' is output by output timing adjust means F. The delay time of outputting the signal Cp' is set by timer means H. |