| 摘要 |
PURPOSE: A speed change control method of an automatic transmission is provided to increase fuel efficiency by controlling speed change according to the fuzzy rule on function, and to travel safely by enhancing driving experience with improving deceleration and acceleration. CONSTITUTION: A control unit decides the fuzzy rule including the middle vehicle speed and the maximum changes of throttle opening degree to be satisfied. The control unit detects the predetermined elapsed time in satisfying the fuzzy rule 11, and decides the mode check variable to be 1 to check deceleration control mode in passing the predetermined time. The control unit checks satisfaction of the fuzzy rule 12 in not passing the predetermined time. The fuzzy rule 11 is modified into the fuzzy rule 12 in satisfying the fuzzy rule 12. The deceleration control mode 5 is set to be 0, and the deceleration control mode 6 is set to 1. The control unit decides the satisfaction of the fuzzy rule 1. The sub routine for processing the uphill control mode 6 is performed in satisfying the fuzzy rule 1. Fuel efficiency is increased with upshifting in detecting sudden deceleration, and deceleration is performed efficiently without speed change.
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