| 摘要 |
<p>A stepless speed-change power transmission (2) for a vehicle includes a driving pulley (221) disposed on an input shaft (203) and including a fixed driving pulley half (222) and a movable driving pulley half (223), a driven pulley (225) disposed on an output shaft (224) and including a fixed driven pulley half (227) and a movable driven pulley half (226), and an air guide unit (23). The air guide unit (23) includes a curved first air guide wall (231) and a curved second air guide wall (234) that are disposed around the fixed driving pulley half (222) to form first and second notches (237, 238) between the first and second air guide walls (231, 234). The first notch (237) guides air from the fixed driving pulley half (222) onto the driven pulley (225). The second notch (238) guides air from the fixed driving pulley half (222) onto the movable driving pulley half (223).</p> |
