Patent ID: 8430779

Claim:
A power-dividing gear train assembly for motor vehicles, comprising: a differential having at least one input shaft and at least first and second output shafts, a superimposing gear train comprising a plurality of epicyclic gear trains drivingly connected indirectly or directly with at least one of the first and second output shafts and a drive motor drivingly coupled to the epicyclic gear trains, the superimposing gear train being arranged and constructed to change output torque at the first and second output shafts, wherein the superimposing gear train has a transmission ratio that is set such that the drive motor is still when the first and second output shafts are rotating synchronously, and at least one torque-reducing epicyclic gear train having three shafts, wherein two of said shafts are respectively connected to two shafts of the differential and the at least one torque-reducing epicyclic gear train is connected upstream of the superimposing gear train.