| 摘要 |
<p>A continuously variable transmision (CVT) is disclosed. The CVT includes a drive pulley (322) adapted to connect to a crankshaft (12) of an engine. The drive pulley (322) has inner (234) and outer (236) halves with belt engagement surfaces (334, 336) to engage the sides of the belt (332). The drive pulley (322) of the CVT also includes a slide sleeve (364) disposed on the shaft (374) adapted to engage an inner side of a belt (332). The inner (234) and outer (236) halves of teh drive pulley (322) are biased apart from one another by a spring (342). The slide sleeve (364) engages the belt (332) when the belt (332) is stationary or traveling at low speeds. The driven pulley (224) includes inner (328) and outer (330) halves with belt engagement surfaces (338, 340). The two halves (328, 330) are biased into contact with one another. A connector connects the inner (328) half to the outer (330) half. In addition, a pneumatically-actuated driven pulley is described together with a CVT incorporating same.</p> |
