Patent ID: 7496442
Filing Date: 2009-02-24
Classification: F16H,Y10T

Abstract:
1. A method for operating a drive train of a motor vehicle having a drive motor, a variable speed automatic transmission, and at least one control device for actuating the drive motor, said method comprising: the control device processing a rotational speed of the drive motor; when there is an actuated change in rotational speed of the drive motor from a starting rotational speed to a target rotational speed during a neutral position of the variable speed transmission, establishing current profile parameters of the change in rotational speed, based on the rotational speed; and thereafter, using pre-stored profile parameters and the current profile parameters, determining corrected profile parameters by which a profile of rotational speed of the drive motor in selected operating states is calculated in advance; and wherein, the corrected profile parameters are determined as a function of at least one of the starting rotational speed and the target rotational speed.