Patent ID: 6095942
Filing Date: 2000-08-01
Classification: B60W,F16H,Y10S,Y10T

Abstract:
A speed change control device for a vehicular continuously variable transmission which transmits the output of an engine thus changed to drive wheels in a state of a continuously variable change speed, said control device comprising:vehicle speed detecting means for detecting a vehicle speed;throttle opening degree detecting means for detecting a throttle opening degree;brake operation detecting means for detecting a brake operation;brake vehicle speed memory means which, when the brake operation is detected by said brake operating detecting means, renews and stores the vehicle speed as a brake release vehicle speed which is detected by said vehicle speed detecting means when the brake is operated; andgradient detecting means for detecting the gradient of a road on which a vehicle runs,wherein, in the case where the fact that the brake is not operated is detected by said brake operation detecting means, and the fact that a throttle is substantially fully closed is detected by said throttle opening degree detecting means,when the present vehicle speed detected by said vehicle speed detecting means is higher than the brake release vehicle speed stored in said brake vehicle speed memory means,a speed change target value is obtained according to the difference between said present vehicle speed and said brake release vehicle speed, and to the road gradient detected by said gradient detecting means, andin the same case, when the present vehicle speed detected by said vehicle speed detecting means is lower than the brake release vehicle speed stored in said brake vehicle speed memory means,the speed change target value is obtained according to the road gradient detected by said gradient detecting means, and speed change control is carried out so as to obtain the speed change target value.