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Audi details its 48 volt electrical system

Audi has disclosed additional details about its newly developed 48 volt electrical system which will be implemented in a series of model in the near future. The RS5 TDI concept benefits from a new subsidiary 48 volt electrical system featuring “new storage technologies” and it also “delivers much more power than the 12 volt system with lead batteries.”

According to Audi, this new system is capable of improving the vehicle’s efficiency as well as its performances. The aforementioned RS5 TDI concept came with a supplemental electric turbocharger but Audi’s engineers are now testing a mild hybrid system which has an engine start/stop system, a lithium-ion battery pack and an “efficiency-optimized” alternator which comes with an energy recovery output of 10 kW representing a lot more than the usual alternators.

The lithium-ion battery is in charge of powering the vehicle at those times when the engine is turned off, thus lowering fuel consumption by around 0.4 liters / 100 km. Audi Technical Development boss Prof. Dr. Ulrich Hackenberg says the 48 volt electrical system will pave the way for new technologies that will make cars not only more sporty, but also more convenient to use and more efficient as well.

Expect Audi’s new 48 volt electrical system to be introduced on several all-new model in the next couple of years.

Adrian Padeanu

Long-time fan of the fabled Four Rings.