Post by: Automotive - Limited-production, top-of-the-line version of the high performance sports car
- 100 pounds lighter, the carbon body parts
- V10 FSI with 412 kW (560 hp), 0-100 km / h in 3.6 seconds
Ingolstadt, now even stronger, lighter and faster: displays the version of the Audi R8's limited production high performance sports cars, GT R8. Output from the 5.2-liter V10 has been increased to 412 kW (560 hp), vehicle weight has been reduced by approximately 100 kilograms (£ 220.46). GT R8 accelerates from zero to 100 km / h (62.14 mph) in 3.6 seconds and reaches a top speed of 320 km / h (198.84 mph).
The R8 high-performance sports cars have a winner from scratch. This applies to both the production model, winner of the "World Performance Car" Award in 2008 (R8) and in 2010 (R8 V10), and racing cars, with the LMS R8, which won 23 races in his first season and claimed three championships. The genes from the version now comes to road races - the GT R8. Exclusive series limited to 333 units. Every GT R8 has a badge with a production number on the shift key lever.
Consistent use of lightweight construction: 100 kilograms (220.46 pounds), trimmed
production R8 5.2 FSI quattro has been a successful example of Audi's lightweight construction philosophy. Its aluminum Audi Space Frame (ASF) body weighs just 210 kilograms (462.97 pounds). aluminum body panels joined to the frame with extruded profiles and cast nodes through a positive and frictional connection. Machine framework is made of ultra lightweight magnesium.
ASF body largely hand-built at the Neckarsulm factory complex in the manufacturing process. Very high strength body is the basis for the proper handling of high-performance sports cars, and also offer good comfort and safety first class crash vibration.
Thanks to ASF body, the production R8 5.2 FSI quattro weighs only 1625 kilograms (3,582.51 lb) - with all-wheel drive quattro permanent and optional R Tronic transmission. This makes it all the more difficult for the engineers to once again achieve substantial weight savings. They took a complicated approach that involves every aspect of vehicle, and eventually came to rest in the scales 1 525 kilograms (3,362.05 lb).
R8 GT windshield made of thinner glass, while the cell bulkhead between the passenger and engine compartments, and windows in the rear doors are made of strong, lightweight polycarbonate. All three modifications are saved nine kilograms (19.84 pounds). Rear wing is still good for an additional 1.2 kilograms (2.65 pounds); thin sheets of metal and pieces of shaved additional 2.6 kilograms (5.73 pounds) of aluminum hatch for containers 100 liters (3.53 cubic feet) baggage at the front of the car.
Long rear hatch is made of carbon fiber reinforced plastic (CFRP) - a gain of 6.6 kilograms (14.55 pounds). And the rear bumper of the same material sideblades save an additional 5.2 and 1.5 kilograms (11.46 and 3.31 pounds), respectively. With minimal weight and high strength, CFRP is an ideal material for a high-performance sports car, and Audi has extensive expertise in its use.
The engineers are also striving to shave every possible gram of weight of the technical components of R8. They shaved one kilogram (2.20 pounds) from the power brake system, four kilograms (8.82 pounds) of aluminum cap from the brake discs and 9.4 kilograms (20.72 pounds) of batteries. The engineers also found 2.3 kilograms (5.07 pounds) of air intake modules and 2.8 kilograms (6.17 pounds) in isolation of the engine compartment.
interior is also great potential to save weight-savings. The new, lightweight carpets account for 7.9 kilograms (17.42 lb) bucket seats with a chassis, glass reinforced plastic (GRP) account for 31.5 kilograms (69.45 pounds). Detailed a number of additional steps that targeted the interior, exterior and technology, such as a higher class, for mild steel exhaust system tailpipes.
Even sharper and more effective: design
Audi R8 GT design is an expression of concentrated power - a beautiful, technical statue measuring 4.43 meters (14.53 feet) long, 1.93 meters (6.33 feet) wide and only 1.23 meters (4.04 feet) high . It suffered a lot of exterior modifications that further refine the appearance. Many of them also reduce weight and improve aerodynamics. R8 generates more downforce GT when compared with the rapid production model driven - without an increase in the value of Cd (0.36) or the frontal region (1.99 m2) (21.42 square feet).
From single-frame grille frames, struts and blades in the air intake finished in matt titanium gray; matt black painted grille. The splitter below the bumper has a double lip and made of carbon. Slender, curved flics on the corner of the nose to increase downforce on the front axle and also made of carbon fiber composites.
One highlight of the R8 GT is standard LED lamps, the use of light emitting diodes for all functions. They produce bright, uniform light, has a long service life and low energy consumption. Lighting also has an attractive and distinctive appearance. Daytime running lights each consist of 24 LEDs and appear as a continuous band. The reflectors are reminded open clam shells.
Defining element of the display is sideblades, which direct air to the engine in the R8 and GT also made of carbon matte. The same materials used for housing to reduce the size of the side mirror mounted on aluminum base. 19-inch wheels feature an exclusive design of twin five-spoke Y in titanium-look finish. Sport front fender "GT" badges.
Modifications to the back of the car is very obvious, beginning with a fixed-wing carbon matte. ventilation curtains at either side of the rear door and bumper CFRP, which integrates a large circular tailpipes, and vents to the wheel wells, have been redesigned. Larger diffuser is made of carbon fiber composites, panels and license plates in the back of the blade width in matte gray titanium. Its tail lights, which also uses LED technology, has been housing the dark with clear glass panels.
Audi R8 GT offers a choice of four body colors: Orange Metallic Samoa, Suzuka Gray Metallic, Silver Ice Metallic Phantom Black pearl effect and
Breathtakingly powerful: with 412 kW (560 hp), 5.2 FSI
The V10 is modified, which includes the cylinder head is painted red, Audi R8 provides the GT performance of the heart. The sprint GT R8 from start up to highway speed in 3.6 seconds and from zero to 200 km / h (124.27 mph) in 10.8 seconds. And encourages not leave until the top speed of 320 km / h (198.84 mph) is reached.
Changes to the electronic engine coaxed an extra 26 kW of cylinder-ten, which now produces 412 kW (560 hp) from a displacement of 5204 cc. Torque curve peaks at 540 Nm (398.28 pounds-ft) at 6,500 rpm, 10 Nm (£ 7.38-ft) is more than the production version. This V10 has a specific power output of 79.2 kW (107.6 hp) per liter displacement. power-to-weight ratio is 3.70 kilograms (8.16 pounds) per kW, or 2.72 kg (6.00 pounds) per-hp. The engine redlines at 8700 rpm.
Long-stroke engine (bore x stroke 84.5 x 92.8 mm [3.33 x 3.65 in]), which was built in hand-factory in Győr, Hungary, features crankcase made of aluminum-silicon alloys are lightweight and excellent strength. A bedplate - a frame for the crankshaft bearing bridge - further increase its stiffness. Complete engine weighs just 258 kilograms (568.79 pounds). This is marked with a cylinder angle of 90 degrees and dry lubrication-bah, which uses a highly efficient oil pump module. Both solutions reduce the center of gravity and thus improve driving dynamics.
crankshaft is designed as a pivot pin general. Which connects the piston rod opposite the crankpin involving public, resulting in the firing intervals alternately 54 and 90 degrees. This unique rhythms provide an attractive V10 sound - music, very technical grand like that in racing. Two flaps in the exhaust system and tone adjust the volume as a function of engine speed and load.
Normally aspirated engines consume an average of 13.7 liters of fuel per 100 km (17.17 U.S. mpg) - fuel economy very good given extraordinary powers. FSI petrol direct injection system injects fuel into the combustion chamber up to 120 bar pressure. Turbulent mixture cool the cylinder wall, allowing the compression ratio of 12.5:1. A variable intake manifold and continuous adjustment of the chain-driven camshaft ensures that the combustion chamber is fully filled. Flaps in the intake ports to facilitate the formation of the mixture by pushing the movement in the air falling revenues.
The drivetrain: uncompromising traction
Gear changes in the GT R8 is handled by the R Tronic sequential manual transmission. Electrohydraulic clutch and switching units receive their orders electronically. It changes gear faster than the six-skilled driver can - in a tenth of a second at high loads and engine speeds.
Electronic management system offers automatic with Sport mode and the characteristics of Normal, and two manual level. This is controlled using the gear selector lever briefly about the central tunnel and two paddles in the steering wheel. Maximum thrust when the launch is guaranteed by the Launch Control - a program that manages a full engine acceleration at high speed and minimum wheel slip when starting.
permanent quattro all-wheel-drive is an ideal technology for a high-performance sports car. Viscous clutch located in front of the center sends 15 percent of the difference in power to the front axle and 85 percent to the rear wheels during normal driving. This split harmonizes perfectly with 43:57 weight distribution which Audi R8 GT's per cent. clutch send as many as 30 percent of power to the front wheels in milliseconds, if necessary. A mechanical locking differential on the rear axle further improve traction. This provides a restriction to 25 percent when the acceleration and up to 40 percent in the attack.
Even tauter chassis and more precise
The Audi R8 high-performance GT sports car driving machine with a heart of lateral acceleration and lightning-fast, almost instantaneous reaction. mid-mounted engine is close to the vertical axis; mass almost negligible during the change of direction quickly. GT R8 is a dynamic, precise and stable in almost every situation.
This followed the racing chassis design classic - double wishbones made out of aluminum to find wheels. That is, hydraulic power-assisted rack-and-wing has a ratio 16.3:1 steering wheel connects the driver directly and intimately and exactly the road. A manually adjustable coilover suspension, which lowers the body as much as 10 millimeters (0.39 in), is standard. a higher front and rear wheel camber make the level of infestation is more agile handling than the standard model.
Forged 19-inch wheels 8.5 J x 19 front and 11 J x 19 at the rear, and shod with size 235/35 and 295/30 tires, respectively. Audi 305/30 tires will increase along with the optional wheels on the rear axle on demand. Cup tires, which offer the ultimate in performance on dry roads, is available for race fans.
Audi mountain internally ventilated, carbon fiber ceramic brake discs standard. They are extremely durable and abrasion resistance and especially light. Together they weight nine kilograms (19.84 pounds) less than their steel counterparts of the same size. They measure 380 mm (14.96 in) in diameter in front and 356 mm (14.02 in) at the rear. Who fled to the friction ring helmets through elastic elements. Red brake calipers anodized aluminum - with six pistons at the front - which is exclusive to the GT R8.
ESP stabilization program specifically for the GT R8 and can switch to Sport mode simply by pressing a button to allow spectacular, but safe, oversteer when accelerating out of corners. The driver can deactivate the system fully for the trip to the race track.
Exclusive and dynamic: the interior and equipment
At Audi, reducing weight means better performance and efficiency, but does not sacrifice. The Audi R8 GT, which sells Audi in Germany for € 193,000, is equipped with automatic climate control system and power windows, navigation system with MMI operating logic and a powerful sound system. A 465 watt, ten-channel Bang & Olufsen sound system, CD changer and Audi Music Interface is available as an option. As usual with Audi, the interior show a loving attention to detail. Rich materials pamper occupants with the look and feel smoother.
Interior ergonomics are decorated in a sporty black and dark gray. Wheel steering, main, roofing paper, the knee, the parking brake lever and bucket seats covered in Alcantara with contrast stitching accents. A shark leather-look synthetic that feels a bit rough to touch it applied to the bulkhead, door liners, the monks and dashboard instruments. The monoposto "" - the arch in the cockpit - is made of matt carbon.
Groups of instruments features a white fast with "R8 GT" badge. Newly designed selector lever is made of CFRP and aluminum; center tunnel and door liners sports with body color of decorative inlays. The frame of the door trims feature decorated with matt aluminum R8 GT "logo.
A number of features that are only available as an option for the GT R8. Exterior options include two alternative wheel, a body-color front splitter and the engine compartment of the CFRP layer. carbon element at the doors, and tunnels, in the cockpit and instrument panel are available as interior choices. Others include leather multifunction steering wheel, a belt of red, orange or gray, floor mats with GT R8 "" logo and trim CFRP doorway illuminated in red. If desired, Audi will fit the frame carbon seat, which is somewhat lighter than the bullet CFRP. Alcantara seat covers are optionally available with the GT "embroidered R8" logo.
Race packages available for racing fans. These include bolt-in roll bar red or black, the latter path and type approval, as well as road-approved four-point belt, red or black, fire extinguishers and kill switches for the battery. A front panel for optional modules covering key motorsports balanced swivel for four-point seat belts, and change the roll bar into a full cage. Looking for more comfort and convenience of the buyer can select the phone preparation with a microphone, an innovative belt. Audi also offers a full leather package, elements of control in leather with contrasting stitching and cruise control system as options. Parking assistance provided with standard equipment.
source: Audi Press
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