| 摘要 |
<p>A continuously variable transmission system having a variable diameter pulley (10) connected by a drive belt (12) to at least one other pulley (14). A tensioner pulley (18) maintains the tension of the drive belt (12) within predetermined limits as the effective diameter of the variable diameter pulley (10) changes. The effective diameter of the variable diameter pulley (10) is determined by a balance between a resilient force biasing a plurality of belt engaging members (54) in a predetermined direction and a radial force action on the plurality of belt engaging members (54) in the opposite direction. In one embodiment, the resilient force biases the plurality of belt engaging members (54) outwardly, and the tensioner pulley (18) is displaced to generate the inwardly directed radial force. Alternatively, the plurality of belt engaging members (54) are biased inwardly by a resilient force and are displaced outwardly by centrifugal forces.</p> |
