Patent ID: 7553250
Filing Date: 2009-06-30
Classification: B60K

Abstract:
1. A drive train of an all-wheel drive vehicle, comprising: a driven front axle and a driven rear axle; a front drive shaft leading to the front axle; a rear drive shaft leading to the rear axle; a transfer case adapted to be coupled to an engine transmission block and including a drive through shaft having a first end adapted to be drivingly connected to the engine transmission block and a second end fixed for rotation with the rear drive shaft; a first friction coupling selectively drivingly interconnecting the drive through shaft and the front drive shaft; a second friction coupling provided at the rear axle to selectively drivingly interconnect and disconnect the drive through shaft and a rotatable input to the rear axle; and a control device to regulate the magnitude of torque transferred by the first and second friction couplings.