Differential with torque vectoring capabilities

Details Differential with torque vectoring capabilities Differential with torque vectoring capabilities

2007-07-03

2007-07-03

Wright, Dirk (Department: 3681)

Planetary gear transmission systems or components

Differential planetary gearing

Differential or nondifferential planetary combined with...

Reexamination Certificate

active

11045243

ABSTRACT:
A differential for delivering vectored torque to left and right axle shafts that rotate about an axis includes a cage which rotates about the axis as a consequence of torque applied to it. The cage contains gearing that transfers the torque to the axle shafts while accommodating for variances in angular velocity between the axle shafts. In addition, the differential has left and right torque diverters, each of which includes a ring gear on the cage, a sun gear on the axle shaft with which it is identified, planet gears between the ring and sun gears, and a carrier for providing axes about which the planet gears rotate. Each diverter also has a brake which resists rotation of the carrier for the diverter and thereby causes torque to transfer from the cage to the axle shaft while bypassing the gearing. The brakes control the torque delivered to the axle shafts, so the differential has the capacity to vector the torque applied to its cage.

REFERENCES:
patent: 5135071 (1992-08-01), Shibahata et al.
patent: 6120407 (2000-09-01), Mimura
patent: 6932734 (2005-08-01), Hwa et al.
patent: WO 0209966 (2002-02-01), None
SAE International, Paper 2004-01-2053, John Park and William J. Kroppe, Dana Corporation entitled “Dana Torque Vectoring Differential Dynamic Trak™”, May 4-6, 2004.
Yuichi Ushiroda, Kaoru Sawase, Naoki Takahashi, Keiji Suzuki; Kunihiro Manage; Technical Review, 2003 No. 15, pp. 73-76, “Development of Super AYC”.

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