Powertrain systems for passenger cars

Systems for electric vehicles

Function

The Electric Vehicle is propelled purely by electricity, so it does not burn fuel or emit any CO₂ when driving.

With further technical progress and the growth of an infrastructure with a dense network of electric filling stations, vehicles driven by electric power alone will become more widespread on the market. They are a milestone on the path to independence from fossil fuels and will in future make a mobility possible that is equally economical as it is free of CO₂ production.

Electric axle drive

The electric axle drive unit sits directly on the axle and includes a separate motor/generator which drives the vehicle electrically when functioning as a motor and helps to transform mechanical braking energy into electrical energy when functioning as a generator.

Inverter

The power electronics is the connection between the battery and the electric machine. It converts the direct current of the high-performance battery into the alternating current required to power the electric motor.

Cooperative regenerative braking system

Traditional braking maneuvers represent a waste of the kinetic energy that has only just been generated via fuel combustion.

The cooperative regenerative braking system ensures that as much braking energy as possible is recuperated and stored as electrical energy. To do this, the generator is used to slow the vehicle down. As soon as the braking requirements exceed the braking capacity of the generator, the classic wheel brakes are applied.

The cooperative regenerative braking system fulfills the same safety requirements as conventional braking systems.

High-voltage battery

The battery supplies the electric machine during electric propulsion. When driving with the combustion engine and during regenerative braking, the battery is charged by the electric machine.