The Audi R10 TDI, usually abbreviated to R10, is a racing car from the German car manufacturer Audi. The car is by far a classic at Le Mans, winning every year since its introduction to the introduction of the new R15. It is designed and constructed for sports car racing in the Le Mans Prototype LMP1 class of the 24 Hours of Le Mans, and other similar endurance races. The car was unveiled 13 December 2005 at 12:00 CET, and went on to win both its maiden race at the 2006 12 Hours of Sebring in March, and the June 2006 24 Hours of Le Mans. It was built to supersede the previous Audi R8 race car, a proven successful model which won five times at Le Mans since 2000, while earning a reputation as one of the most successful racing cars of all time. In later years the Automobile Club de l'Ouest (ACO), who sets the rules for racing in the Le Mans 24 Hours, has reduced the restrictor size on the engine, and stipulated the R8 carry ballast, to make the races more competitive. In response to the new level of competition, the development of a successor was necessary. Unlike most racing cars competing in the LMP1 series, the R10 is powered by a diesel engine, with two turbochargers and utilizes the Turbocharged Direct Injection (TDI) technology. The engine itself is a 5.5L V12 made of aluminium, employing common rail direct fuel injection technology. The turbochargers are supplied by Garrett Systems, with 39.9 mm (1.57 in) restrictor plates mounted in front of the intake. The weight of this engine is a problem for Audi. The latest Audi 3.0 L V6 TDI weighs 220 kg (485 lb), and the 4.2 L V8 TDI 255 kg (562 lb) but their blocks are made of compacted graphite iron (CGI). The V12 is rumoured to weigh upwards of 200 kg (441 lb); Audi engineers say that the weight per cylinder is the same as the preceding 3.6-litre FSI V8 of the Audi R8. It was the first diesel powered car to win either of those events. This is the most ambitious and the most expensive project ever undertaken by Audi Sport; the Audi R10 TDI project costs Audi $15 million a year. [READ THE REST OF THIS ARTICLE]
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