| 摘要 |
A multi-speed transmission has four planetary gear sets, eight rotatable shafts and six shifting elements. The sun gear of the first planetary gear set is connected to the third shaft, which is detachably connectable to the input shaft through a first coupling and is attachable to the housing through a first brake. The input shaft is, through a second coupling, detachably connectable to the fourth shaft connected to the bar of the third planetary gear set, which is attachable to the bar of the first planetary gear set through a second brake, that is coupled to the housing (G). The input shaft is connected to the sun gear of the fourth planetary gear set. The eighth shaft is connected to the ring gear of the first planetary gear set, the sun gear of the second planetary gear set, and the sun gear of the third planetary gear set. The fifth shaft is connected to the bar of the second planetary gear set and the ring gear of the third planetary gear set and is, through a third coupling, detachably connectable to the seventh shaft connected to the ring gear of the fourth planetary gear set. The sixth shaft is connected to the ring gear of the second planetary gear set and is, through a fourth coupling, detachably connectable to the output shaft of the transmission, which is connected to the bar of the fourth planetary gear set. |
