| 摘要 |
<p>@ A transmission system which provides a tracked vehicle with a maximum rate of turn that decreases as higher forward gear-ratios are selected and, consequently, high low-speed manoeuvrability combined with relatively low, and therefore safe, maximum rates of turn at high vehicle speeds. This is achieved by means of a modifying differential (16) arranged to rotate a steering input member (83) of a steering differential (6) at a rate equal to a multiple of the rotational speed of a power input member (28) less a multiple of the rotational speed of the output member (40) of a gear unit (3).</p> |
