| 摘要 |
PURPOSE:To prevent a speed change shock by outputting a lock up release signal in synchronization with generation of a shift down signal if the rotational frequency of an engine is upward tendency, and outputting the lock up release signal before the generation of the shift down signal if it is downward tendency when a shift down signal is generated in the lock up state. CONSTITUTION:The above control device is adapted to intermittently operate a lock up mechanism A provided on a torque converter by controlling lock up electromagnetic means B, and operate a geared speed change mechanism C to change speed by controlling 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 the rotational frequency change condition detection means G, if the rotational frequency of an engine output shaft is upward tendency,a lock up release signal Cq' is output in synchronization with outputting of the shift down signal Cp', and if it is downward tendency, first the signal Cq' is output, and later the signal Cp' is output by output timing adjust means F. |
