SYSTEM OF CONTROLLING TORQUE TRANSFER IN A MOTOR VEHICLE ANDRELATED METHOD

摘要

A system for controlling torque transfer in a motor vehicle includes a transfer case (20), a front inter-axle differential unit (22) and a rear inter-axle differential unit (24). The transfer case is operative for automatically transferring torque between front and rear pairs of wheels. The front inter-axle differential unit is operative for automaticall y transferring torque between the wheels of the front pair of wheels. The rear inter-axle differential unit is operative for automatically transferring torque between the wheels of the rear pair of wheels. Under extreme operating conditions, the system is operative for delivering substantially all torque to a single tractive wheel.