Patent ID: 8712658
Filing Date: 2014-04-29
Classification: F16D

Abstract:
1. A method for adapting a contact point in a drivetrain of a motor vehicle including a dual clutch transmission with a first clutch connected to a first input shaft for the transmission and a second clutch connected to a second input shaft for the transmission, a combustion engine, and an electric motor connected to the first input shaft via the dual clutch transmission, comprising: placing the first and second clutch in a disengaged first position, for the first transmission input shaft, the transmission is in a neutral position to the transmission output shaft; rotating the electric motor; obtaining and saving a first reference torque of the electric motor; moving, using an actuator, the first clutch in an engagement direction to a second position; measuring the torque of the electric motor; determining that the measured torque of the electric motor is approximately equal to a predetermined clutch torque from a characteristic curve for the first clutch; determining a path traversed by the actuator from the disengaged first position of the first clutch to the second position of the first clutch; and, replacing, in the characteristic curve, a reference actuator path for the predetermined clutch torque with the path traversed by the actuator.