|The aluminum V12 TDI|
Audi made racing history on Saturday as its diesel-powered Audi R10 TDI won the Mobil 1 Twelve Hours of Sebring, becoming the first diesel car in the world to win a major sports car race. Audi used Sebring as a test for the 24 Hours of Le Mans race, set for June 17-18.
The new Audi R10 TDI is powered by a completely new all-aluminum, 5.5-liter, twelve-cylinder bi-turbo TDI engine that delivers more than 485 kW (650 hp) and more than 1,100 Nm of torque.
The V12 TDI used in the R10 is the first Audi diesel engine with an aluminium crankcase. The cylinder-bank angle is 90 degrees. The V12 TDI has, like Audi production car engines, four valves per cylinder and twin overhead camshafts. The common rail fuel injection system exceeds 1,600 bar, and ignition pressures reach values never previously seen in any Audi engine. The V12 TDI is equipped with a pair of diesel particle filters.
This engine is the specifically most powerful diesel there is in the world and, up until now, the biggest challenge that Audi Sport has ever faced in its long history. There has never been anything remotely comparable. We started development with a clean sheet of paper.—Ulrich Baretzky, Head of Engine Technology at Audi Sport
Audi wants to use its diesel work in motorsport to increase its technology advantages in the commercial diesel engines. Every second Audi sold today is delivered with a TDI diesel engine.
With regard to fuel consumption, environmental friendliness, the combustion process and other new technologies we expect an enormous push in the coming years. We are still relatively close to the findings of our colleagues from production since we are breaking completely new ground in motorsport. However, this will change. I believe to be able to share the things that we developed specifically for motorsport with production in the future.—Ulrich Baretzky