Patent ID: 7988573

Claim:
A control device for controlling a belt-type continuously variable transmission, wherein said belt-type continuously variable transmission comprises: two pulley shafts arranged in parallel at a predetermined distance; movable sheaves arranged on the pulley shafts and slidable on corresponding pulley shafts in axial directions of the pulley shafts, respectively; fixed sheaves arranged on the corresponding pulley shafts to face corresponding movable sheaves so as to form grooves between the fixed sheaves and the movable sheaves, respectively; a belt wound on the grooves between the movable sheaves and the fixed sheaves facing one another; a first actuator that is provided to a one of the movable sheaves so as to press the one movable sheave toward a corresponding one of the fixed sheaves to generate a belt pinching pressure on the one movable sheave; a second actuator and a torque cam that are provided to an other movable sheave so as to press the other movable sheave toward an other fixed sheave to generate a belt pinching pressure on the other movable sheave; and an electronic control unit including an input torque deriving arrangement that derives an input torque actually input to the belt-type continuously variable transmission based on an output torque of the belt-type continuously variable transmission and a gear ratio of the belt-type continuously variable transmission, compares the derived input torque actually input to the belt-type continuously variable transmission with an input torque from an internal combustion engine obtained based on an engine torque characteristic map, and corrects input torque information of the engine torque characteristic map when the derived input torque actually input to the belt-type continuously variable transmission differs from the input torque from the internal combustion engine, wherein the output torque output from the belt-type continuously variable transmission is calculated based on a control amount of the first actuator which is related to an oil pressure of the first actuator.