Posted: 12 Sep 2011 07:45 AM PDT
On the eve of the International Motor Show (IAA) in Frankfurt Audi presented its new DTM vehicle: After the V8 quattro (1990 to 1992) and the A4 (2004 to 2011) the brand with the four rings has opted to use a two-door coupe in the most popular international touring car series for the first time.
The new Audi A5 DTM, which bears the internal project name “R17” at Audi Sport, conforms to the new Technical Regulations that will come into effect in the 2012 season. The project was premised on three key aims: the safety of the vehicles, reduction of the costs by up to 40 percent and a spectacular exterior design.
IAA visitors will have the opportunity to get a first-hand impression of the new car’s look at the Audi Hall from September 13th to 25th. The Audi A5 DTM appears lower and sturdier than its successful predecessor with which Audi has won four of the last seven DTM titles. Underneath the body, which is completely made of carbon, a new type of chassis features a hybrid construction. The combination of a carbon fiber monocoque and steel cage sets new standards in terms of safety for a race touring car. In addition, the chassis is one of more than 50 components which are identical for all DTM vehicles.
“Due to these shared components it was possible to achieve the cost reduction target of up to 40 percent without compromising on the safety and attractiveness of the DTM vehicles,” explains Head of Audi Motorsport Dr. Wolfgang Ullrich, who has been in charge of the new Audi A5 DTM development.
The A5 DTM is 5.01 meters long, 1.95 meters wide and 1.15 meters low. The wheelbase of all DTM vehicles is identical, i.e. 2,750 millimeters. Like its predecessor, the A5 DTM is powered by a V8 engine with an output of about 340 kW (460 HP). The six-speed transmission, now pneumatically operated using paddle shifters in the steering wheel, is a new development. The shifting events are more precise compared with conventional manual gearshifts and allow the mileage of the unit to be quadrupled to up to 24,000 kilometers.
The engine electronics (Bosch MS 5.1), which operate without fuses, and the central display that is already being used in the Audi R8 LMS are state-of-the-art as well. The exclusive tire partner Hankook is supplying larger and wider tires with dimensions resembling those of LMP2 sports cars.
A safety fuel tank with a capacity of 120 liters is integrated with the carbon fiber cell of the Audi A5 DTM. It would allow the current distance of a DTM race to be covered without a refueling stop. For longer races a quick refueling system is in development.
The engine sub-frame at the front and the transmission at the rear are identical for all DTM cars and limit the freedom of the engineers with respect to the suspension, which has to be mounted to these shared components. In addition, steel as the material for the A-arms and the tube dimensions are specified. For the hub carrier, the regulations define the material and the production process to be used. A milled aluminum part with a minimum weight is prescribed. Furthermore, a strict provision in the regulations defines the wheel hubs and the rims for all entrants.
The possibilities in the area of aerodynamics are restricted as well. Air flow through the body, as in the case of the current A4 DTM, and complex additional wings at the rear are no longer allowed. This creates a stronger visual resemblance between the race car and the production model. At the same time the new DTM vehicles are to respond less sensitively to body contact with other vehicles and deliver slipstream improvements – also thanks to the larger rear wing.
“In the past, Audi has had very innovative solutions particularly in the area of aerodynamics in the DTM,” says Dr. Martin Mühlmeier, Head of Engineering at Audi Sport. “Since these areas have been subjected to severe restrictions good detailed solutions will now be crucial to achieving advantages over the competition.”
The “R17” project was launched in May 2010 and a month later the decision was made that the A5 would serve as the base model. Trials in the model wind tunnel have been run since February 2011. The roll-out was successfully performed on July 29, 2011 by Martin Tomczyk. Since then testing of the A5 DTM has been in progress. The homologation of the A5 DTM is scheduled for March 1, 2012 – until then the engineers at Audi Sport in Ingolstadt and Neckarsulm still have time to fine-tune the detailed solutions.
- Audi Motorsport
Posted: 12 Sep 2011 06:33 AM PDT
Stephan Winkelmann, President and CEO of Automobili Lamborghini S.p.A., is presenting at the Volkswagen Group Night in Frankfurt the most extreme Gallardo ever: the Gallardo LP 570-4 Super Trofeo Stradale. Automobili Lamborghini is bringing motor racing excitement directly to the road. This new and most extreme top model in the Gallardo lineup is based on the successful race car from the Lamborghini Blancpain Super Trofeo, the world’s fastest single-make series.
The car will be produced in a limited run of 150 numbered units.
The Lamborghini Blancpain Super Trofeo championship brings professional racers and gentlemen drivers face-to-face in fiercely fought battles on Europe’s most challenging racetracks such as Monza, Silverstone and Hockenheim. There are many similarities between the racing and road versions of this super sports car. For example, they both share the same V10 powerplant, which is used in the racing version with no modifications.
An enormous and manually variable rear spoiler for increased dynamic load
Right from first glance, these similarities are even more evident in the new Gallardo LP 570-4 Super Trofeo Stradale. In fact, it is equipped with the same rear spoiler that offers greater aerodynamic load – reaching in the best aerodynamic condition 3 times the load of the Gallardo LP 560-4 – for increased dynamic stability during tight, high-speed driving. As in the race cars, the rear spoiler can be varied manually in order to let the driver optimize the car’s performance according to the track or road characteristics.
Another element taken directly from the racing version is the removable engine hood with quick-release system. Both the spoiler and the hood are of course made of carbon composite material, as are a host of other components on the SuperTrofeo Stradale. Together with aluminum, carbon fiber is the basis behind the extremely lightweight construction of Gallardo’s new top model.
Lightweight construction through consistent use of carbon fiber.
The Gallardo LP 570-4 Super Trofeo Stradale boasts a maximum dry weight of 1340 kilograms. It beats the already lean Gallardo LP 560-4 by 70 kilograms, which gives the Gallardo LP 570-4 Super Trofeo Stradale a stunning power-to-weight ratio of 2.35 kilograms per HP for breathtaking performance. It sprints from 0 to 100 km/h in a mere 3.4 seconds and reaches 200 km/h just 10.4 seconds later. Its forward thrust finally tops out at 320 Km/h.
“Rosso Mars” stands for Italy’s racing tradition
The Gallardo Super Trofeo Stradale sports a brand new “Rosso Mars” finish that underscores the special connection between ultimate race track performance and Lamborghini’s “Italianness”. The “Rosso Mars” color symbolizes Italy’s traditional racing red, as established at the beginning of last century in motor racing, when the home nations of the competitors were indicated by the color of the paint on the vehicles. Dark green stood for Great Britain, blue was for France, white (and silver later on) represented Germany, white and blu stripes for USA, and red was the color of all race cars from Italy.
Red, black and carbon fiber characterize the exterior
The exterior appearance of the Gallardo LP 570-4 Super Trofeo Stradale is perfectly accentuated by a matte black finish on the large rear spoiler, the engine hood and the front air intakes, which contrasts with the “Rosso Mars” paint. The forged wheels are painted in high-gloss black, a color that is also available on the roof as an option. The rocker panel covers, impressive rear diffuser and outside mirror housings are made of carbon fiber polished to a high gloss, while the brake calipers are accented in red for the first time on a Lamborghini. It’s a perfect match with the exterior color and racing concept of this new super sports car. And besides the historically suggestive “Rosso Mars”, the new Gallardo Super Trofeo Stradale is also available upon request in “Grigio Telesto” or “Bianco Monocerus” with the roof available in gloss black as an option, as mentioned above.
Minimalist sporty interior
Black and red, the perfect combination of sporty minimalism, are the dominant shades inside the Super Trofeo Stradale. The most broadly used materials are Alcantara – in “Rosso Mars” on the underside of the dashboard, the central part of the seat cushion and the backrest – and extremely lightweight carbon fiber. Black Alcantara with contrasting red top-stitching is used to finish the other parts of the interior. The steering wheel is upholstered in black suede and also features red top-stitching. The door panels, the monocoque racing seats and the center console cover are made of carbon fiber, the construction of which Lamborghini has achieved a world-leading expertise. Discreet sporty accents are provided by dark chrome visible metal parts.
Upon request, an interior layout including elements made of carbon fiber, such as the handbrake frame, the middle of the center console, the lower rim of the steering wheel, the decorative frames around the main and secondary instrument panels, the door handles, and the handle for opening the glove box (also available upon request), can be ordered.
Like the Super Trofeo competition version, the new Super Trofeo Stradale is based on the Gallardo Superleggera technical approach. The V10 powerplant generates 570 HP, equivalent to 419 kW, which is fully available at 8000 RPM. The maximum torque is equally impressive, with the torque curve peaking at 540 Nm at 6500 RPM. The V10’s unique firing order delivers the striking sound you hear in motor racing.
Transmission “race tested” in the Lamborghini Blancpain Super Trofeo championship series
Like the race car, the Gallardo Super Trofeo Stradale offers the robotized e-gear six-speed transmission controlled by steering wheel paddles as standard equipment. This electronically controlled system shifts through its six gears smoothly and much faster than any human being could. And for maximum acceleration from a standing start, the transmission can be set to the “Thrust Mode” – a program that allows to reach the best performance possible executing a racing start with minimal tire slippage at an initial engine speed of approximately 5000 rpm.
Permanent all-wheel drive for maximum traction in any situation
Every kilometer in the Gallardo LP 570-4 Super Trofeo Stradale is packed with sheer excitement, in part due to its unrelenting grip in virtually all situations thanks to all-wheel drive. At the end of the day, the Lamborghini Super Trofeo is the only single-brand racing series in the world that features all-wheel drive race cars. The Gallardo Super Trofeo Stradale is a highly concentrated driving machine offering a truly stunning driving experience with breathtaking cornering speeds and fast, immediate response. Its road manners are always precise, stable and completely safe.
Suspension with unmatched precision
The layout of the suspension is directly derived from motor racing, with a double aluminum wishbone guiding the wheels. Precise rack-and-pinion steering gives the driver a very close connection to the road. As is true for the Gallardo Superleggera, the vehicle is specially set up to take full advantage of its dynamic potential. No other model in the Gallardo line is as close to being a true race car. Another great feature is the ultra-lightweight 19-inch wheels, which alone save some 13 kilograms. The lightweight and sturdy wheel bearings and bolts are made from titanium and high performance Pirelli P Zero Corsa tires are fitted.
Brakes with unmatched stopping power
Behind the massive wheels are brakes designed for unmatched stopping power, as controlled by the ESP stability control system, which is standard equipment. The front axle is equipped with aluminum calipers with eight pistons each, and the calipers on the rear axle have four pistons each. The ventilated discs on the front and rear measure 365 and 356 millimeters, respectively. Upon request, Lamborghini will install a carbon-ceramic brake system. The carbon-ceramic discs measure 380 mm for the front wheels and 356 mm for the rear wheels.
The optional equipment designed with racing in mind includes not only the carbon-fiber ceramic brake discs, but also a tubular interior roll cage, 4-point safety belts and fire extinguisher. On the other hand, those who want comfort can equip their Super Trofeo Stradale with a satellite navigation, with Bluetooth connection for mobile phones, an anti-theft system, and a lifting system that raises the front axle.
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