Distributed Functions: Notes

Because parts of the hybrid active gearbox and its functions have been developed by the co-operation partners, BMW had to agree to compromises regarding distributing the gearbox functions to the control units.

In previous BMW vehicles, the electronic transmission control (EGS) has authority over most gearbox functions, such as gear selection, engaging and disengaging the parking lock or selecting the shift program. Important input signals here are those from actuation of the accelerator pedal or brake pedal, information about the movement of the vehicle (speed, acceleration etc.), the engine speed and the operation of the gear selector switch. Based on this, the suitable shift program is used and the correct gear for the driving situation determined and engaged.