Patent ID: 8500602
Filing Date: 2013-08-06
Classification: B60K,F02D,F16D,F16H,Y10T

Abstract:
1. A method of operating a transmission of a motor vehicle, wherein the transmission is positioned in a drive train between a drive aggregate and an axle drive, an input shaft of the transmission is connected via a controllable separation clutch (K) with the drive aggregate, and an output shaft of the transmission is connected with the axle drive, and power is divertable from the transmission to drive a power take-off (PTO), and for either activating or connecting the power take-off (PTO), a rotation speed of the drive aggregate is first requested via an engine intervention, the transmission is shifted to neutral and the separation clutch (K) is disengaged and thereafter, the separation clutch (K) is again engaged and the engine intervention is canceled, the method comprising the steps of: partially engaging the separation clutch (K) at either a position dependent or a distance dependent clutch speed; monitoring a transmission input rotational speed and a drive aggregate rotational speed during the partial engagement of the separation clutch (K) at the either position dependent or the distance dependent clutch speed; and discontinuing engagement of the separation clutch (K), at the either position dependent or the distance dependent clutch speed, and fully engaging the separation clutch (K) at a maximum clutch speed, when the transmission input rotational speed approximately reaches the drive aggregate rotational speed, and the drive aggregate rotational speed approximately matches an idle rotational speed of the drive aggregate.