Patent ID: 8469854

Claim:
A drivetrain for an all-wheel drive motor vehicle, the drivetrain comprising: a primary driveline being adapted to drive a pair of primary vehicle wheels, said primary driveline including a first differential having a first differential case driving a pair of first output gears, and a pair of first axleshafts interconnecting said first output gears to said primary vehicle wheels; a power switching mechanism having an input shaft adapted to receive rotary power from said first differential case, an output pinion shaft, and a disconnect mechanism, said disconnect mechanism being operable in a disconnected mode to inhibit transmission of rotary power between said input shaft and said output pinion shaft and in a connected mode to permit transmission of rotary power between said input shaft and said output pinion shaft; and a secondary driveline being adapted to drive a pair of secondary vehicle wheels, said secondary driveline including a propshaft and a rear drive module, said rear drive module including an input pinion shaft, a second differential, a pair of second axleshafts drivingly connected to said pair of secondary vehicle wheels, a torque transfer device, and a limited slip clutch assembly, said second differential having a second differential case driving a pair of second output gears that are drivingly connected to said second axleshafts, said input pinion shaft being coupled by said propshaft to said output pinion shaft of said power switching mechanism, said torque transfer device being operable in a first mode to inhibit transmission of rotary power between said input pinion shaft and said second differential case and in a second mode to permit transmission of rotary power between said input pinion shaft and said second differential case, and said limited slip clutch assembly being operable in a first mode to permit speed differentiation between said second differential case and one of said second axleshafts and in a second mode to inhibit speed differentiation between said second differential case and said one of said second axleshafts.