[PTA SC] Audi R10 5.5 V12 TDI @ 811 lb-ft

De OP
Audi is once again one step ahead of the opposition: The inventor of TDIwill become the world's first automobile manufacturer to fight for overall victory with a diesel engine at the famous 24 Hours of Le Mans. The all-new Audi R10, which was unveiled in Paris, is powered by a totally new 5.5-litre, twelve-cylinder bi-turbo TDI engine, which is extremely quiet and economical.

The Le Mans Prototype, with over 650 hp and more than 1,100 Newton metres torque, significantly exceeds the power produced by the majority of previous Audi racing cars including that of its victorious R8 predecessor. Audi ventures into previously unexplored diesel-engine terrain with the V12 power plant manufactured completely from aluminium. As with the TFSI technology, which triumphed initially at Le Mans before being adopted for mass-production, Audi customers should benefit once again from the lessons learnt in motorsport.

The R10 prototype's V12 power unit, which is equipped with two diesel particle filters, is hardly recognisable as a diesel thanks to the engine's smooth running nature. The TDI engine's specialities presented the Audi Sport engineers with a whole list of challenges. The injection pressure easily exceeds the 1,600 bar achieved in production cars. The usable power band lies between 3,000 and 5,000 revs per minute; an unusually low rev range for a racing engine. The driver must change gear in the R10 far less often than in the R8 because of the TDI engine's favourable torque curve.

The enormous torque of over 1,100 Newton metres does not only make extreme demands of the R10 transmission system; even the latest generation of engine dynamometers at Audi Sport had to be re-equipped with special gearboxes capable of withstanding the unusual forces.

Additionally, radical changes to the chassis were also necessary. The Audi R10 has a significantly longer wheel base than the R8. The overly wide front tyres are, up until now, unique for a Le Mans Prototype. New technologies were also implemented during the development of the carbon-fibre monocoque. Chassis, engine and gearbox form an extremely rigid, fully stressed unit.

The new Audi R10 successfully completed its first test at the end of November. An extensive test programme, including the 12-hour race at Sebring (USA) on 18 March, is scheduled before the 24 Hours of Le Mans on 17/18 June 2006. The development team from Audi Sport is supported by Reinhold Joest's squad, which also performed this task during the R8 project.

General specifications

Country of origin Germany
Year of introduction 2006
Weight 925 kilo / 2039.3 lbs

Drivetrain

Engine TDI 90º V 12
Engine Location Mid , longitudinally mounted
Displacement 5.500 liter / 335.6 cu in
Valvetrain 4 valves / cylinder, DOHC
Fuel feed Direct Fuel Injection
Aspiration Twin Garrett Turbos
Gearbox X-Trac
Drive Rear wheel drive

Performance figures

Power 650 bhp / 485 KW
Torque 1100 Nm / 811 ft lbs
BHP/Liter 118 bhp / liter
Power to weight ratio 0.7 bhp / kg












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Op maandag 13 februari 2006 13:23 schreef ijsmeis het volgende:
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