Patent ID: 8052579
Filing Date: 2011-11-08
Classification: F16D,Y10T

Abstract:
1. A method for checking the plausibility of an actuation position of a clutch of a double-clutch transmission operated by an actuator, comprising the following steps: disengaging the clutch assigned to a currently active old subtransmission and simultaneously engaging the clutch assigned to a new subtransmission to shift from a gear selected in the old subtransmission to a gear selected in the new subtransmission; deselecting the gear selected in the old subtransmission during an overlapping operation of the clutches or immediately thereafter; detecting a difference between a speed of rotation of a drive shaft of the double-clutch transmission driven by a drive motor and a speed of rotation of an input shaft of the old subtransmission; and evaluating the state of the clutch assigned to the old subtransmission as disengaged when the difference in speeds of rotation of the drive shaft of the double-clutch transmission and the input shaft of the old subtransmission exceeds a predetermined value within a predetermined time after deselection of the gear.