| 摘要 |
<p>Provided is a speed change control system comprising a speed ratio detecting unit for detecting the speed ratio between the input shaft and the output shaft of a torque converter, a torque converter speed ratio reference speed changing unit for shifting up or down the speed stage of a transmission in accordance with the speed ratio detected, a brake detecting unit for detecting the action of a running brake device, and a shiftdown limiting unit for permitting a shiftdown to a first speed by a speed change unit, when the action of the brake device is not detected by the brake detecting unit, but for limiting the minimum speed stage at a shiftdown time by the speed changing unit, to a second speed when the action of the brake device is detected. ® KIPO & WIPO 2009</p> |
