Patent ID: 11054028

Abstract:
A CVT is provided with a primary pulley (1) and a secondary pulley (2) between which a belt (3) is wound, and hydraulic pressure control valves (5, 6, 7) which control pulley hydraulic pressures. A CVT controller (8) sets a base current indicated value to be output to solenoids (5a, 6a, 7a) of the hydraulic pressure control valves (5, 6, 7), on the basis of a pulley hydraulic pressure indicated value. A dither control unit (58) of the CVT controller (8) superimposes a dither current onto the base current indicated value to be output to the solenoids (5a, 6a, 7a) if, during pulley hydraulic pressure control, the situation is determined, on the basis of belt slip determination information, to be such that belt slipping is highly likely to occur.