| 摘要 |
PROBLEM TO BE SOLVED: To suppress a clutch engaging shock in start operation while positively preventing unintended speed change from being performed by a failure or the like. SOLUTION: An engine brake regulating means for regulating torque on the engine brake side to a selected operation range in a range of a predetermined total variable speed ratio or a variable speed ratio has a back pressure setting means for setting the back pressure of an oil chamber for supporting the torque on the engine brake side out of two oil chambers 30A, 30B of a hydraulic actuator 30 for driving a trunnion of a toroidal type continuously variable transmission. The engine brake regulating means is also provided with orifices 54, 55 or accumulators 50, 51 for delaying the rise of back pressure to supply pressure when a vehicle stop range is changed over to a forward range or a reverse range. |
