| 摘要 |
The multi-speed transmission comprises four planetary gear sets, eight rotating shafts and six shifting elements, whereas the sun gear of the first planetary gear set is connected to the fifth shaft, which is connectable to the input shaft through a first clutch and is attachable to a housing through a third brake, whereas the drive shaft is, through a second clutch, connectable to the seventh shaft connected to the bar of the fourth planetary gear set and the ring gear of the third planetary gear set and is connected to the sun gear of the second planetary gear set, whereas the sixth shaft is connected to the ring gear of the first planetary gear set, the bar of the second planetary gear set and the ring gear of the fourth planetary gear set and the third shaft is connected to the sun gear of the third planetary gear set and the sun gear of the fourth planetary gear set, and is attachable to the housing through a first brake, whereas the fourth shaft is connected to the bar of the first planetary gear set, is attachable to the housing through a second brake and, through a third clutch, is detachably connectable to the eighth shaft connected to the ring gear of the second planetary gear set and whereas the output shaft of the transmission is connected to the bar of the third planetary gear set. |
| 主权项 |
1. An automatic transmission, comprising
a housing; a plurality of shafts including a drive shaft, an output shaft, a third shaft, a fourth shaft, a fifth shaft, a sixth shaft, a seventh shaft and an eight shaft; a plurality of planetary gear sets disposed within the housing, the plurality of planetary gear sets including a first planetary gear set, a second planetary gear set, a third planetary gear set and a fourth planetary gear set, a sun gear of the first planetary gear set connected to the fifth shaft, a ring gear of the first planetary gear set connected the sixth shaft, a carrier of the first planetary gear set connected to the fourth shaft, a sun gear of the second planetary gear set connected the drive shaft, a ring gear of the second planetary gear set connected to the eighth shaft, a carrier of the second planetary gear set connected to the sixth shaft, a sun gear of the third planetary gear set connected to the third shaft, a ring gear of the third planetary gear set connected to the seventh shaft, a carrier of the third planetary gear set connected to the output shaft, a sun gear of the fourth planetary gear set connected to the third shaft, a ring gear of the fourth planetary gear set connected to the sixth shaft, a carrier of the fourth planetary gear set connected to the seventh shaft; and a plurality of shifting elements including a first brake, a second brake, a third brake, a first clutch, a second clutch and a third clutch, the first brake selectively coupling the third shaft to the housing, the second brake selectively coupling the fourth shaft to the housing, the third brake selectively coupling the fifth shaft to the housing, the first clutch selectively coupling the drive shaft to the fifth shaft, the second clutch selectively coupling the drive shaft to the seventh shaft, the third clutch selectively coupling the fourth shaft to the eighth shaft. |
