| 摘要 |
There is provided a V-belt continuously variable transmission ( 10 ) including: a primary pulley ( 11 ) that is connected to an input shaft ( 11 d); a secondary pulley ( 12 ) that is connected to an output shaft ( 12 d); a V-belt ( 13 ) that is wrapped around the primary pulley ( 11 ) and the secondary pulley ( 12 ); and controllers ( 20, 30 ). When a speed ratio of the transmission ( 10 ) is to be increased, the oil pressure supplied to the primary pulley ( 11 ) is set to an oil pressure necessary for ensuring a torque capacity of the V-belt ( 13 ) and necessary for maintaining the speed ratio, and the oil pressure supplied to the secondary pulley ( 12 ) is set to an oil pressure that is higher than the oil pressure necessary for ensuring the torque capacity of the V-belt ( 13 ) and necessary for maintaining the speed ratio, thereby attaining a target speed change speed.
|
