Abstract: A power-dividing gear train assembly for motor vehicles includes a differential that outputs torque to two output shafts. The output torque applied to the output shafts is changeable by using a superimposing gear train, which comprises a plurality of epicyclic gear trains and is drivingly connected indirectly or directly with the output shafts. A drive motor is drivingly coupled to the superimposing gear train and the transmission ratio of the superimposing gear train is set such that an output shaft of the drive motor is still when the output shafts are rotating synchronously. To achieve a more precise and quicker-reacting redistribution of the drive torques, at least one epicyclic gear train, which reduces torque and cooperates with the differential, is connected upstream of the superimposing gear train.

Abstract: The invention relates to a power-dividing gear train assembly for motor vehicles, having a driven differential that outputs to two output shafts via compensating elements, wherein the output torque at the output shafts is changeable by using a superimposing gear train, which is formed by epicyclic gear trains and is drivingly connected indirectly or directly with the output shafts, and a drive motor coupled thereto, and wherein the transmission ratio of the superimposing gear train is set such that the drive motor is still when the output shafts are rotating synchronously. For achieving a more precise and quicker-reacting redistribution of the drive torques in a structurally-advantageous construction of the superimposing gear train and the drive motor, it is proposed that at least one epicyclic gear train (Uz, Uz2, U1, U2), which reduces torque and interacts with the differential (U), is connected upstream to the superimposing gear train (26).