Patent ID: 8579745

Claim:
A belt type continuously variable transmission comprising: a primary sheave and a secondary sheave each having a pair of flanges axially movable relative to each other, at least one of the flanges of the primary sheave being a movable flange; a belt wound around the sheaves; a flange position detection sensor for detecting a position of the movable flange; a restriction section for restricting movement of the movable flange at one end of a movable range of the movable flange; and a control device for controlling the position of the movable flange in a running mode based on a detection value of the flange position detection sensor, the control device including a first storage section for storing in advance reference correlation between the position of the movable flange and the detection value of the flange position detection sensor, a first processing section for moving the movable flange to a position in a check mode different from the running mode where movement of the movable flange is restricted by the restriction section, and for storing a detection value of the flange position detection sensor detected with the movable flange moved to that position in a second storage section, and a second processing section in the check mode for deriving correlation between the position of the movable flange in the belt type continuously variable transmission and the detection value of the flange position detection sensor based on the detection value of the flange position detection sensor stored in the second storage section by the first processing section and the reference correlation between the position of the movable flange and the detection value of the flange position detection sensor stored in the first storage section.