| US 7,491,146 B2 | ||
| Torque distributing drive assembly for motor vehicles | ||
| Anupam Sharma, East Syracuse, N.Y. (US); and Timothy M. Burns, Elbridge, N.Y. (US) | ||
| Assigned to Magna Powertrain USA, Inc., Troy, Mich. (US) | ||
| Filed on Jan. 22, 2008, as Appl. No. 12/9,782. | ||
| Application 12/009782 is a continuation of application No. 11/396139, filed on Mar. 31, 2006, granted, now 7,344,469. | ||
| Claims priority of provisional application 60/694474, filed on Jun. 28, 2005. | ||
| Prior Publication US 2008/0139359 A1, Jun. 12, 2008 | ||
| This patent is subject to a terminal disclaimer. | ||
| Int. Cl. F16H 48/20 (2006.01) | ||
| U.S. Cl. 475—221 [475/225; 475/231; 475/249] | 20 Claims |
| 1. A motor vehicle, comprising:
a powertrain operable for generating drive torque;
a primary driveline for transmitting drive torque from said powertrain to first and second primary wheels;
a secondary driveline for selectively transmitting drive torque from said powertrain to first and second secondary wheels,
said secondary driveline including an input shaft driven by said powertrain, a first axleshaft driving said first secondary
wheel, a second axleshaft driving said second secondary wheel and a drive mechanism coupling said input shaft to said first
and second axleshafts, said drive mechanism including a differential assembly, a planetary gear assembly, first and second
brakes and a friction clutch, said differential assembly having an input component driven by said input shaft, a first output
component driving said first axleshaft and a second output component driving said second axleshaft, said planetary gear assembly
having a first gear, a second gear, a first carrier, a third gear rotatably supported by said first carrier and meshed with
said first gear and said second gear, a fourth gear, a fifth gear driven by said first carrier, a second carrier coupled to
said first axleshaft, and a sixth gear rotatably supported by said second carrier and meshed with said fourth gear and said
fifth gear, said first brake is operable for selectively braking rotation of said first gear, said second brake is operable
for selectively braking rotation of said fourth gear, and said friction clutch is operable for selectively coupling said first
carrier to one of said input component and said second output component of said differential assembly; and
a control system for controlling actuation of said first and second brakes and said friction clutch.
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