Patent attributes
Nine-speed multi-stage transmission with four planetary gear sets, rotatable shafts and six shift elements. Sun of first set is connected to fifth shaft which is couplable, via third brake, to housing and is connectable, via first clutch, to drive shaft which is connectable, via second clutch, to seventh shaft which is connected to ring of third set and carrier of second set. Drive shaft is connectable to eighth shaft, via third clutch, connected to carrier of first set and sun of second set. Sixth shaft is connected to ring of second set and carrier of fourth set. Fourth shaft is connected to ring of first set and sun of fourth set and is couplable, via second brake, to housing. Third shaft is connected to sun of third set and is couplable, via first brake, to housing. Output shaft is connected to carrier of third set and ring of fourth set.
