| 摘要 |
A vehicle transmission (10) is provided having an input shaft (11), an epicyclic unit (13) which comprises three compound planets (16, 17, 18) which co-rotate in unison at all times. Two of the planets (16, 17) act as inputs to the epicyclic and engage respective sun gears (20, 21) on the input shaft. The third planet (18) acts as the output and engages a respective sun gear (22) on an output shaft (23) of the epicyclic unit. The transmission further comprises two hydraulically operated clutches (Cl, C2) which are alternatively engageable to drive the input planets via their respective sun from the input shaft. A continuously variable drive connection (24) is made between a carrier (19) for the planets and the input shaft, the connection driving the carrier from the input shaft in a continuously variable manner to provide a CVT. |
