Method for the optimization of the switching point a downshift in the case of a vehicle comprising an automatic transmission.

摘要

Method for the optimization of the switching point a downshift in the case of a vehicle comprising an automatic transmission, characterized in that for a possible next downshift is carried out, the duration of up to reaching of the new synchronization point is calculated, wherein for this purpose the time sequences of the shift sequence control is calculated and on the strategy which determines the switching point of the switching fabric are the reaction time is often transmitted, in which case, on the basis of the calculated time required to reach of the new synchronization point of the switching point is determined such that the maximum possible or the desired gear shift speed can be achieved, wherein for circuits operating in tension, the values to be transmitted from the control of the disengaging shift element preparing be calculated, since from the control of the shut-off pressure of the release point from the synchronous point of the istgangs, wherein for circuits in the coasting operation the values to be transmitted from the control of the engaging shift element be calculated because of this switching element for the rotation speed change to the new gear ratio step is responsible.