Slip preventing control of toroidal continuously variable transmission

摘要

A toroidal continuously variable transmission (2) transmits the rotation output of a vehicle engine (1) at an arbitrary speed ratio. The toroidal continuously variable transmission (2) comprises two disks (31, 32) disposed coaxially, and power rollers (33) in contact with the two disks (31, 32). Surfaces of the two disks (31, 32) and of the power roller (33) are provided with oil. The oil is temporarily collected in oil pan (34). The oil temperature in the oil pan (34) is detected by a sensor (14), and slip of the power rollers (33) is prevented by suppressing the output torque of the engine (1) when the oil temperature is low.