Torque vectoring drive axle assembly

Details Torque vectoring drive axle assembly Torque vectoring drive axle assembly

2006-07-25

2006-07-25

Morris, Lesley D. (Department: 3611)

Motor vehicles

Having four wheels driven

Including separate mechanical assemblies for transmitting...

C180S249000, C180S248000, C475S221000, C475S248000, C475S229000

Reexamination Certificate

active

07080707

ABSTRACT:
A drive axle assembly includes a pair of axleshafts connected to a pair of wheels, and a drive mechanism for selectively coupling a driven input shaft to one or both of the axleshafts. The drive mechanism includes first and second drive units that can be selectively engaged to control the magnitude of the drive torque transferred and the relative rotary speed between the input shaft and the axleshafts. Each drive unit includes a planetary gearset disposed between the input shaft and its corresponding axleshaft, and a pair of mode clutches that may be activated to cause the planetary gearset to establish different speed ratio drive connections between the input shaft and the axleshaft. A control system including an electronic control unit (ECU) and sensors are provided to control actuation of the clutches so as to control the side-to-side traction characteristics of the drive axle assembly.

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