Patent ID: 9079495
Filing Date: 2015-07-14
Classification: B60K

Abstract:
1. An all-wheel drive system for a motor vehicle, the motor vehicle having a powertrain, a first pair of wheels and a second pair of wheels, the all-wheel drive system comprising: a primary driveline including a first input, a first differential, a first multi-speed range unit, and a power take-off unit, the first input being configured to be driven by the powertrain, the first differential having a first pair of differential outputs and being configured to distribute rotary power for driving the first pair of wheels, the first multi-speed range unit being operable in first and second speed ratio drive connections for transmitting rotary power between the first differential and the first input, the power take-off unit having a disconnect mechanism, which selectively couples a power take-off input member to the first input for rotation therewith, and a first output, wherein the first input and the first and second differential outputs are rotatable about a first rotary axis; and a secondary driveline including a second input, a second differential and a second multi-speed range unit, the second input being coupled to the power take-off unit to receive rotary power therefrom, the second differential being configured to distribute rotary power for driving the second pair of wheels; wherein the second multi-speed range unit is selectively operable to establish first and second speed ratio drive connections between the second input and the second differential.