| 摘要 |
PCT No. PCT/GB94/00782 Sec. 371 Date Oct. 11, 1995 Sec. 102(e) Date Oct. 11, 1995 PCT Filed Apr. 14, 1994 PCT Pub. No. WO94/24462 PCT Pub. Date Oct. 27, 1994A continuous-variable ratio transmission comprising a ratio-varying unit ("variator"), and an epicyclic unit having three outputs arranged concentrically. Two of those outputs are connected respectively in fixed ratio to opposite ends of the variator, so that as the variator ratio changes, the speed of one of these outputs always rises and that of the other falls. These two outputs are also connected by appropriate gearing and clutches to the CVT output shaft. Successive regimes of operation, so extending the overall ratio range of the CVT, are obtained by alternatively connecting each of the two epicyclic outputs to the CVT output. Ratios and other parameters are chosen so that regime changes are synchronous. |
