| 摘要 |
PROBLEM TO BE SOLVED: To reduce cranking torque of an engine in restarting the engine so that a vehicle including a toroidal transmission mechanism, returns from idling stop.SOLUTION: A solenoid valve 52 for controlling a clamping force of a hydraulic loader 27 of a toroidal transmission mechanism 11 disconnects a second oil passage 60 from a first oil passage 59, and connects the same to a drain port P3 in idling stop of an engine E, thus a traction oil of high viscosity inside of the hydraulic loader 27 is quickly discharged in restarting the engine E by cranking, generation of centrifugal oil pressure is prevented, and cranking torque can be reduced. When the engine E is restarted, the solenoid valve 52 disconnects the second oil passage 60 from the drain port P3 and connects the same to the first oil passage 59, so that the traction oil is supplied to the hydraulic loader 27 again, thus the clamping force is generated, and slip of a power roller 25 can be suppressed. |
