| 摘要 |
Tensioner (1, 30) comprising a body (2) defining an axis (A), a support (4) revolving about the axis (A), a pulley (6) carried idle by the support (4) for contacting an accessory drive belt, a spring (7) for applying a torque to the support (4) and tensioning the belt and a rotary motor (8) and a gear (9) for controlling a thrust element (10) which applies a load to the support (4), the spring (7) surrounding the motor (8). |
