Overview
This document contains information on:
General
Function requirements
Selection of direction of travel
General
The direction of travel is specified by the driver with the aid of the drive range via the DIRECT-SELECT selector lever.
Function requirements
Circuit 15 ON
Selection of direction of travel
For vehicles with two electric machines, the following explanations apply for each machine.
The powertrain control unit requests the direction of travel according to the selector lever position from the power electronics control unit. The power electronics control unit controls the electric machine with 3-phase alternating voltage via the integrated power inverter. Reversing for drive range "R" is realized in this case through reversing the direction of rotation of the electric machine.
The current direction of travel is displayed in the multifunction display.
The drive range "N" is not realized by opening a coupling, but rather, it is simulated my means of corresponding actuation of the electric machine.