| 摘要 |
PURPOSE:To avoid shift hunting and frequent brake operation on a down-hill so as to facilitate driving operation by selecting the optimum speed change step conformable to the road conditions such as a flat road of an urban area, a straight going-up road between mountains and a curved portion and a driver's driving intention. CONSTITUTION:The steering angle and the lateral acceleration applied to a vehicle are detected, and the effective value of the product thereof is obtained. According to the obtained effective value, the speed change step of an automatic transmission 3 is selected. |
