Torque vectoring axle

Details Torque vectoring axle Torque vectoring axle

2007-08-21

2007-08-21

Morris, Lesley D. (Department: 3611)

Motor vehicles

Having four wheels driven

With differential means for driving two wheel sets at...

C180S245000, C180S246000, C180S249000, C475S248000, C475S249000

Reexamination Certificate

active

10846859

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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