Source: dtm.com To make a championship winning car even better - the Audi Sport engineers and technicians faced this delicate task when the job of developing the DTM race version of the new Audi A4 arose. From the visual aspect they certainly succeeded: The new A4 DTM, which was publicly unveiled at the Motor Show in Geneva, appears even more dynamic than the successful predecessor model with which
Mattias Ekström won the DTM title last year.
The fourth-generation Audi A4 DTM, which bears the project name "R14" internally at Audi Sport, is also futuristic from the technical aspect. With the help of state-of-the-art CFD calculations (Computational Fluid Dynamics) particular attention was paid to the air flow running around and through the car. "In doing so we completed what we had already started last year with the R13," explains Head of Audi Motorsport Dr Wolfgang Ullrich. "We are convinced that we have achieved the most logical optimisation of the aerodynamics allowed within the framework of the regulations."During the twelve-month development period, which started in March 2007, a predominantly new DTM car differing in many details to its predecessor was created in Ingolstadt and Neckarsulm. "Ground breaking technical innovations on a par with quattro, FSI or TDI are not possible owing to the restrictive nature of the regulations," says Dr Martin Mühlmeier, Head of Audi Sport Technology. "In the DTM it's more a question of the logical interpretation and implementation of the technology allowed."
In the process it was possible to reduce the car's centre of gravity height and to further reduce the dry weight, which in turn gives the race engineers more flexibility to set the car up to suit specific race tracks and the weight distribution. The technicians even found development potential in the four-litre near 460 hp V8 engine used in the Audi A4 DTM. The internal friction was further reduced which in turn benefited the power produced and torque curve.