Patent ID: 7361113

Claim:
A motor vehicle, comprising: a powertrain operable for generating drive torque; and a driveline for selectively transmitting drive torque from said powertrain to first and second wheels, said driveline including an input shaft driven by said powertrain, a first axleshaft driving said first wheel, a second axleshaft driving said second wheel, and a drive mechanism for selectively coupling said input shaft to one or both of said first and second axleshafts, said drive mechanism including a transfer shaft driven by said input shaft and first and second drive units operably disposed between said transfer shaft and said first and second axleshafts, said first drive unit including a first planetary gearset, a first mode clutch and a first overrunning clutch, said first planetary gearset includes a first carrier driven by said transfer shaft, a first sun gear, a first ring gear driving said first axleshaft, and a set of first planet gears meshed with said first sun gear and said first ring gear and which are rotatably supported by said first carrier, said first mode clutch is operable to selectively brake rotation of said first sun gear and said first overrunning clutch is operable to releaseably couple said first ring gear for rotation with said first carrier, said second drive unit including a second planetary gearset, a second mode clutch and a second overrunning clutch, said second planetary gearset includes a second carrier driven by said transfer shaft, a second sun gear, a second ring gear driving said second axleshaft, and a set of second planet gears meshed with said second sun gear and said second ring gear and which are rotatably supported by said second carrier, said second mode clutch is operable to selectively brake rotation of said second sun gear and said second overrunning clutch is operable to releaseably couple said second ring gear for rotation with said second carrier.