Multi-stage power-shift transmission

摘要

A power-shiftable multi-stage transmission in planetary design, between a drive shaft and an output shaft, in particular an automatic transmission for a vehicle. The multi-stage transmission has two parallel shaft sections, six shift elements, at least two spur-gear stages and three planetary gear sets, each of which has one sun gear, one ring gear, and one planet carrier having a plurality of planetary gears. The planet carrier is united in a carrier, and the two shaft sections can be connected to one another via the at least two spur-gear stages. Different transmission ratios between the drive shaft and the output shaft can be implemented by selective engagement of the six shift elements such that a plurality of forward gears, in particular nine forward gears, and at least one reverse gear, can be implemented.

主权项

1. A power-shiftable multi-stage transmission (120) of a planetary design, for a vehicle (100), for installation between a drive shaft (AN) and an output shaft (AB), the mufti-stage transmission comprising:
first and second parallel shaft sections (WS1, WS2); first, second, third and fourth clutches (K1, K2, K3, K4) and first and second brakes (B1, B2); at least first and second spur-gear stages (STS1, STS2); first, second and third planetary gear sets (PS1, PS2, PS3); and each of the first, the second and the third planetary gear sets (PS1, PS2, PS3) comprising a sun gear (SO1, SO2, SO3), a ring gear (HO1, HO2, HO3), and a planet carrier (ST1, ST2, ST3) supporting a plurality of planetary gears; wherein the first and the second shaft sections (WS1, WS2) are connectable to one another via at least the first and the second spur-gear stages (STS1, STS2); each of the first shift brake (B1), the second shift clutch (K2) and the third shift clutch (K3) are directly connected to the planet carrier of the third planetary gear set (PS3) for coupling the planet carrier of the third planetary gear set (PS3) to other components of the mufti-stage transmission (120); different transmission ratios between the drive shaft (AN) and the output shaft (AB) are implemented by selective engagement of the first, the second, the third, and the fourth clutches (K1, K2, K3, K4) and first and second brakes (B1, B2) such that nine forward gears, and at least one reverse gear, are implementable.