Initially, the team used standardized cars with little technological input from Audi, but that changed starting with the 2017/18 season when the carmaker started to develop its own cars.
After a disappointing season that saw them finish sixth in the Constructors’ standings, the team is determined to bow out of the competition as winners with the help of its latest racecar, the e-tron FE07.
The single-seater is built on the Spark SRT05E chassis made from carbon fiber with an aluminum honeycomb core. It uses a fully independent pushrod suspension system with steel wishbones and two shock absorbers for each wheel.
“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,” says Stefan Aicher, Head of E-Powertrain Development at Audi Sport.
The result of this painstaking development process is the MGU05, a single-speed electric powertrain with an internal rotor concept, external magnets, a highly efficient cooling system, and six electrical phases.
The team also worked extensively to increase the efficiency of the new powertrain, pruning numerous challenging testing cycles that pushed it to its limits. This led to an overall efficiency of more than 95%, according to the engineers.
Like all Formula E cars, the e-tron F07 is supplied with electric power by a 385-kg (849-lb) battery developed by McLaren Applied Technologies. The 52-kWh lithium-ion pack, which can be recharged in about 45 minutes, is mounted between the driver’s seat and the MGU.
For the upcoming season, Audi Sport ABT Schaeffler will attempt to win it all with the help of long-time driver Lucas di Grassi and Formula E newcomer Rene Rast. The latter earns a permanent seat with Audi after replacing Daniel Abt for last season’s final six races.
The e-tron F07 will also be used by Audi customer team Envision Virgin Racing which finished fourth in the prior season, seven points clear of the works team.
The new season is set to debut on 26 February with the Diriyah ePrix held in Saudi Arabia’s capital city Riyadh.