| 摘要 |
<p>A continuously-variable-ratio transmission ('CVT'), for instance of the toroidal-race rolling-traction type, capable of geared neutral and of operating in at least two regimes and including a ratio-varying component ('variator') (4), a power-recirculating epicyclic (E), a final drive shaft (1) connectable with the variator (4) by way of one of two alternative driven shafts (A, B) and an input epicyclic (e) the input (35) of which is connectable to a prime mover (3) and the two outputs (36, 40) of which are connected to the two alternative driven shafts (A, B) respectively. One of the regimes includes a 'geared neutral' condition, and the power-recirculating epicyclic (E) is associated with clutches (44, 46) whereby power is recirculated through it in that regime. In the remaining one or more regimes no power is recirculated within that epicyclic (E), but drive reaches the CVT output (1) by way of appropriate clutches (44, 46; 48, 47; 49; 45) and whichever of the two driven shafts (A, B) will rise in speed as that regime proceeds.</p> |
