| 摘要 |
PROBLEM TO BE SOLVED: To prevent a speed change shock by properly relieving a hold value set for fixing a line pressure at the time of automatic transmission speed changing according to an operation state of an internal combustion engine. SOLUTION: When an input torque detection value tt and an input torque hold value tthd detected at the time of speed change transition period starting are not diverged (no in S122), the input torque hold time tthd is kept to be used for line pressure adjusting (S116). If diverged (yes in S122), the input torque detection value tt of a real time is used for line pressure adjustment without using the input torque hold value tthd (S110). Consequently, the input torque hold value tthd is stopped to use, and the input torque detection value tt of the real time can be used. Thereby, the speed change shock can be prevented owing to non usage of the input torque detection value tt due to uncomformity even when a throttle opening changes. COPYRIGHT: (C)2009,JPO&INPIT |
