Abstract
Goal-directed utilization of active torque distribution to the four drive wheels has become increasingly important in the last few years, especially with a view to improving both driving dynamics and traction. With the Vector Drive rear axle transmission, ZF generates such a torque vectoring system at the rear axle. This paper describes how such a rear axle torque vectoring system can be implemented while fulfilling the requirements of precise torque control and robust functional availability with adherence to safety requirements as well as suitability for volume production. Based on the technical description of the system and its setup, the interaction of the individual components within the overall functionality is demonstrated.
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