On the eve of the 2011 International Motor Show (IAA) in Frankfurt Audi presented the new Audi A5 DTM: after the V8 Quattro (1990-1992) and A4 (2004-2011) has the brand with the four rings for the first time with a 2-door coupe in the most popular international touring car series selected.
The new Audi A5 DTM, sport bearing internal project at Audi with the name of the “R17”, meets the new technical standards in force in the season 2012. The project is based on three basic objectives: security of vehicles, a reduction in costs by 40% and a spectacular exterior design.
2011 IAA visitors have the chance to an impression from the first-hand look of the new car in the Audi-Hall of the 13th century, September 25 is younger 2011. Audi A5 DTM and more resistant than its predecessor with success, has the Audi won four of the last seven title of DTM. Under the body, which has a totally new type of carbon is, a hybrid chassis construction. The combination of a machined steel and carbon fiber monocoque sets new standards in security for a touring car race. In addition, the chassis one of the more than 50 components that are the same for all vehicles of the DTM.
“By these shared components it possible, was the aim of reducing the costs of up to 40% without affecting the safety and the attractiveness of the DTM vehicles,” says Director of Audi Motorsport Dr Wolfgang Ullrich, who is responsible for the new Audi A5 DTM development.
Audi A5 DTM is 5.01 M long, 1.95 m wide and low 1.15 metres. All DTM vehicles wheelbase is identical, that is, like its predecessor, the 2, 750 mm. A5 DTM is by a V8 engine with a capacity of around 340 kW (460 HP). Six-speed manual, pneumatically operated, via paddle shift now is on the steering wheel, a new development. Change events are more precise compared to conventional manual Gearshifts and the number quadrupled kilometers of the unit, 24,000 km.
The electronics of the engine (Bosch MS 5.1), which function without backups and the Central screen i.e. used in the Audi R8 LMS of his art. Exclusive partner of tyre Hankook supplies tires more big and spacious with dimensions similar to sports cars in the LMP2.
With the Audi A5 DTM-carbon cell a tank with a capacity of 120 litres security is integrated. It would be the current DTM race distance without aerial refueling stop. Is a fast system development for the descents refuel.
The module in the front subframe and the transmission in the back are all DTM vehicles and limit the freedom of the engineers on the suspension to be provided to these shared components. Furthermore, as a material for the A Armas steel and gives the size of the pipe. The regulation defines for the company’s hub, the material and the production process. Prescribed part of the bleaching of aluminium with a minimum weight. Moreover, the regulation is defined strictly providing a hubs and rims for all participants.
The possibilities in the field of aerodynamics, so are limited. Air flow through the body, as in the current A4 DTM and complex additional wings on the back are no longer allowed. This leads to a strong visual similarity between the auto race and the production model. At the same time, are the new DTM vehicles of less sensitive to contact with other of the body and offer improvements also thanks to the larger rear wing slipstream.
“In the past Audi a very innovative solutions in particular in the field of aerodynamics in the DTM, has”, said Dr. Martin Selva Meier, head of the engineering of Audi Sport. “Because these areas will experience now severe limitations on decisive advantages over the competition good detail solutions”.
The project “R17” was in May 2010 and a month later, it was decided that the A5 model would serve as the starting point. Tests in a wind tunnel model are from February 2011 lead. The roll-out was done by Martin Tomczyk successfully on the 29 July 2011. Audi A5 DTM test was run. The adoption of the DTM-A5 to March 01-2012 Audi in Ingolstadt and Neckarsulm engineers to then sports still have time, to refine the detailed solutions.