| US 7,601,089 B2 | ||
| Power transfer unit with torque vectoring drive mechanism | ||
| Sankar K. Mohan, Jamesville, N.Y. (US); Anupam Sharma, East Syracuse, N.Y. (US); and Thomas Bowen, Rochester Hills, Mich. (US) | ||
| Assigned to Magna Powertrain USA, Inc., Troy, Mich. (US) | ||
| Filed on Aug. 21, 2007, as Appl. No. 11/894,527. | ||
| Application 11/894527 is a continuation of application No. 11/226993, filed on Sep. 15, 2005, granted, now 7,267,627. | ||
| Application 11/226993 is a continuation in part of application No. 10/852620, filed on May 24, 2004, granted, now 7,086,982. | ||
| Prior Publication US 2008/0004149 A1, Jan. 03, 2008 | ||
| This patent is subject to a terminal disclaimer. | ||
| Int. Cl. F16H 48/20 (2006.01) | ||
| U.S. Cl. 475—221 [475/225; 475/249] | 19 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 disposed between said input shaft and
said first and second axleshafts, said drive mechanism including a differential, a speed changing unit, first and second mode
clutches and a brake unit, said differential 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 speed changing unit having
a gearset driven by said input component and a transfer shaft driven by said gearset, said first mode clutch is operable for
selectively coupling said first output component for rotation with said transfer shaft, said second mode clutch is operable
for selectively coupling said second output component for rotation with said transfer shaft, and said brake unit is operable
for selectively braking a component of said gearset; and
a control system for controlling actuation of said first and second mode clutches and said brake unit.
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