Belt-type continuously variable transmission

摘要

The rigidity of a movable pulley half is enhanced by the rigidity of a cylinder fixed to a back surface of the movable pulley half and influences of a controlled hydraulic pressure and a centrifugal hydraulic pressure which are exerted in a hydraulic fluid chamber partitioned in the cylinder. On the other hand, an annular protruding portion having detection teeth for a rotation sensor is formed on a back surface of an outer circumferential portion of a fixed pulley half, whereby the difference in rigidity between both the pulley halves is reduced by the effect of the annular protruding portion to improve the rigidity of the fixed pulley half, thereby making it possible to allow the variation characteristics of a misalignment relative to a drive ration to approach a characteristic set in advance.