Patent ID: 8795126
Filing Date: 2014-08-05
Classification: B60K,F16H,Y10T

Abstract:
1. A drivetrain for an all-wheel drive motor vehicle, the drivetrain comprising: a primary driveline including a first differential, said primary driveline being adapted for driving a pair of first vehicle wheels, said first differential having a first differential case; a power switching mechanism having an input shaft adapted to receive rotary power from a powertrain, a two-speed range unit disposed between said input shaft and said first differential that is operable in a first range mode to couple said input shaft and said first differential case for common rotation and in a second range mode to establish a reduced speed ratio drive connection between said input shaft and said first differential case, an output pinion shaft, a disconnect mechanism operable in a connected mode to permit transmission of rotary power between said input shaft and said output pinion shaft and in a disconnected mode to inhibit transmission of rotary power between said input shaft and said output pinion shaft; and a second driveline including a propshaft and a rear drive module, said rear drive module having a second differential, an input pinion shaft, an output shaft, a torque transfer device, and a second two-speed range unit, said second differential being adapted to drive a set of second vehicle wheels and having a second differential case, 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 permit transmission of rotary power between said input pinion shaft and said output shaft and in a second mode to inhibit transmission of rotary power between said input pinion shaft and said output shaft, said second two-speed range unit being disposed between said output shaft and said second differential and being operable in a first range mode to establish a first speed ratio drive connection between said output shaft and said second differential case and in a second range mode to establish a second speed ratio drive connection between said output shaft and said second differential case.