| 摘要 |
PURPOSE:To prevent shock during speed change by correcting vehicle speed, changed to a low speed stage set in a speed change map, to the high speed side by the specified quantity when throttle opening is less than the specified value and the rate-of-change of vehicle speed is more than the specified value, thus performing speed change control. CONSTITUTION:Multistage speed change gear mechanism is automatically operated according to a speed change map preset on the basis of throttle opening information from a throttle opening detecting means for detecting throttle opening and vehicle speed information for a vehicle speed detecting means for detecting vehicle speed. A vehicle speed rate-of-change computing means is provided to compute the rate-of- change of vehicle speed from the vehicle speed information, and the vehicle speed changed to the low speed stage set in the speed change map is corrected to the high speed side by the specified quantity when the throttle opening is less than the specified value and the vehicle speed change-of-rate is more than the specified value, thus performing speed change control. The vehicle speed during speed change operation is thereby prevented from being lowered down below the creeping speed of the concerned speed change stage even with response delay by oil pressure between a speed change command and the actual execution of speed change, and thus shock during speed change is prevented. |
