TORQUE VECTORING DIFFERENTIALS
A CONVENTIONAL diff gearing system is located in the centre, but on either side of the carrier is a clutch pack that (when electronically engaged) is able to mechanically link the axle directly to the carrier. Using electronic manipulation of the clutch packs, the designers are able to vary the torque to each wheel. When turning around a bend, the computer is able to provide more torque to the outside wheels, therefore improving turn-in and handling characteristics.
If used as the centre diff in a full-time 4WD application, you could have a vehicle with a bias toward the rear wheels for everyday driving, but could split the torque 50:50 when off road. This differs from a Torsen diff, where the torque split is mechanically set and can’t be altered on the fly.