Patent ID: 6625536
Filing Date: 2003-09-23
Classification: B60W,F16D,Y10T

Abstract:
A procedure for the control and regulation of a clutch in an automated stepped transmission for a motor vehicle, wherein an electronic control apparatus, by means of a first or second regulation circuit determines the behavior of the clutch, whereby two conditions of driving are provided for, and the first condition represents a start-up process for a vehicle in traction operation driven at a speed less than a given threshold speed value, the second condition represents a driving above a threshold vehicle speed and that a traction force interrupted shifting from a first (i1) into a second gear ratio stage (i2) can be carried out, whereby for the control and regulation of the clutch during the first driving condition, the first regulation circuit is employed, the regulation size of which is equivalent to the actual value of the motor speed of revolution (n_MOT_IST) and that during the second condition of driving a second regulation circuit is employed, the regulation size of which is equivalent to the actual value of a difference in speeds of rotation (dnK_IST) of the clutch, therein characterized, in that during a third condition of driving, which corresponds to driving under a threshold vehicle speed in a compression stage, the clutch is subjected to a controlled pressure value dependent upon various influences, and that the actual value of the difference in speeds of rotation (dnK_IST) of the clutch is not set back to a value of zero.