Early last month Audi revealed they would be racing four R18s at Le Mans this year, two of which would be using a hybrid drivetrain. Overnight the R18 e-tron quattro was announced. It will be joined by a development of the R18 Ultra which won the Le Mans 24 hour race last year.
As the name suggests the new R18 uses an e-tron hybrid system and brings a return of Audi’s famed all-wheel drive quattro system to top level motorsport. However, the quattro system will be unlike any we’ve seen on an Audi road car. For now at least.
The rear wheels will be powered by the latest incarnation of the V6 TDI, producing 375kW, which has brought Audi so much success. The front wheels will be where the e-tron fun happens. They will get their power from a flywheel accumulator which is charged by capturing braking energy from the front wheels at speeds over 120km/h.
Audi say the production applications underpinning the R18 e-tron quattro are their inspiration. “Audi has always consciously selected championships and categories in racing that have a close relationship to production and therefore have technical relevance for the Audi customers,†explains Head of Audi Motorsport Dr Wolfgang Ullrich. “quattro, TFSI and TDI are three excellent examples of how motorsport has stimulated production development. A similar tendency is apparent with the e-tron quattro: we test a completely new technology on the race track before it’s introduced to the Audi production line.â€
The R18 ultra has been further developed as well. Apart from the hybrid components it is idential to the R18 e-tron quattro. Both models now feature a new gearbox with a carbon-fiber composite housing.
Audi Sport Team Joest will compete in the 2012 World Endurance Championship which starts with the 12 hours of Sebring on 12 March. The R18 ultra TDI will race at Sebring before the R18 e-tron quattro joins the program for the 6 hour of Spa and the remaining races on the calendar. Including, of course, the 24 hours of Le Mans (16–17 June).
You can read more from Audi after the break.