Patent ID: 8016093
Filing Date: 2011-09-13
Classification: B60K

Abstract:
1. A torque transfer device comprising: a rotatable input member; a rotatable output member; a friction clutch to selectively transfer torque between the input member and the output member; an actuator providing an actuating force to the friction clutch; and a controller that controls the actuator in response to a torque request, wherein the controller is configured to control the actuator to cause the torque transfer device to output a torque with a magnitude that is equal to a minimum torque if a magnitude of the torque request is less than the magnitude of the minimum torque; and wherein the controller is configured to control the actuator such that when the minimum torque is less than the magnitude of the torque request, the magnitude of the torque output from torque transfer device is greater than the magnitude of the torque request.