Audi Sport Team Principal Allan McNish says that motorsport has always been extremely important to the German manufacturer. Speaking at the launch of the new ABB FIA Formula E car on Thursday, the Former F1 driver and 24 Hours of LeMans winner said:
Motorsport has always been of decisive importance for Audi and its technology development. That is also where our most famous slogan ‘Vorsprung durch Technik’ comes from,
Head of Development with Audi e Drive, Stefan Aicher commented saying:
“The Audi e-tron FE07 has an all-new electric powertrain that was developed in-house for the first time,”While in recent years a continually optimized version of the powertrain, jointly developed with technology partner Schaeffler, was always used, work on the new MGU inverter unit for the coming world championship started from scratch. “We went to the limits in all areas of this project.
Aicher went on to say:
We were able to directly reinvest these savings in the new MGU for the benefit of enhanced efficiency. Even so, the new MGU inverter unit weighs less than 35 kilograms. This was an exceptional achievement by the whole team.
The team will continue with Lucas Di Grassi and Rene Rast for season 7. Speaking about the efficiency of the powertrain, Formula E project leader with Audi Sport, Tristan Summerscale says:
That is why we are leaving no stone unturned to reduce the energy loss within the system to an absolute minimum. The extensive work done on in-house test benches was a decisive factor in achieving this objective. In numerous tough testing cycles, the entire powertrain was stressed to its limits in order to raise the entire high-voltage system to a maximum performance level. The outcome was successful: “We have achieved an overall efficiency of more than 95 percent for our powertrain. The new MGU inverter unit has an efficiency of even more than 97 percent in all relevant driving conditions.
Summerscale went on to say:
If you compare our MGU with an internal combustion engine delivering a comparable power output of 250 kW, our efficiency is not only twice as high, but our weight of less than 35 kilograms is also much lighter. “This clearly shows what an efficient solution an electric powertrain is.
Photograph courtesy of Audi Sport