| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a continuously variable transmission for a vehicle capable of improving fuel consumption and drivability by preventing a vehicle speed obtained from a detected value of a damaged sensor from being used for a transmission control. <P>SOLUTION: A transmission control device 50 which performs a transmission control of the continuously variable transmission for a vehicle 20 in accordance with the vehicle speed V compares a first vehicle speed V1 obtained from the rotation speed NDR of an output member 26 of the continuous variable transmission and a second vehicle speed V2 obtained from the rotation speed NABS of the wheels DRW and the first vehicle speed selection means S5, which selects the lower side of the vehicle speed is selected as a substitute vehicle speed Vsub among the first V1 and the second V2 vehicle speeds, and the third vehicle speed V3 obtained from the output side rotation speed NEL of a clutch mechanism 5, and the substitute vehicle speed Vsub are compared and among the third vehicle speed V3 and the substitute vehicle speed Vsub, a second selection means S6 is composed as the higher side vehicle speed Vc and is selected as the control vehicle. The control vehicle speed Vc is used as the vehicle speed V for carrying out speed change control. <P>COPYRIGHT: (C)2008,JPO&INPIT |
