Patent ID: 7500931

Claim:
An all-wheel drive vehicle ( 1 ) having a drive engine ( 5 ), at least two vehicle axles ( 2 , 3 ), and a transmission unit ( 7 ) for variable distribution of drive torque from the drive engine ( 5 ), in a longitudinal direction of the vehicle, between the vehicle's axles ( 2 , 3 ), the transmission unit ( 7 ) having a transmission input shaft ( 10 ) and at least two transmission output shafts ( 11 , 12 , 13 ), at least two planetary gearsets ( 14 , 15 , 18 ) and an electric machine ( 16 ) arranged between two mutually connected shafts ( 14 A, 15 A) of the planetary gearsets ( 14 , 15 ) for the variable distribution of torque delivered by the transmission input shaft ( 10 ) between the at least two transmission output shafts ( 11 , 12 , 13 ) as a function of a torque produced by the electric machine ( 16 ), the electric machine ( 16 ) actively communicating with the transmission unit ( 7 ) in an area of a connection between the two mutually connected shafts ( 14 A, 15 A) of the planetary gearsets ( 14 , 15 ), and the planetary gearsets ( 14 , 15 ) having different transmission ratios such that, during a direct start, the electric machine ( 16 ) is driven by virtue of a speed difference between the two mutually connected shafts ( 14 A, 15 A) of the planetary gearsets ( 14 , 15 ).