There's really no reason to complain about the current Audi R8, whatwith it's powerful V-8 engine, bold appearance, and all-wheel drive.However, Ingolstadt's best have upped the ante with the new R8 V-10 5.2FSI, set to debut this January at the North American International AutoShow in Detroit. It's no secret that the R8 shares a lot of itsunderpinnings with the Lamborghini Gallardo, and now the Lambo'sten-cylinder engine makes its way down the food chain and into Audi'ssupercar.
The 5.2-liter V-10 is said to produce 525 horsepower and 391pound-feet of torque -- boosts of XX and XX (respectively) over the V-8R8. This means that the newest R8 will be able to sprint from zero to62 miles per hour in just 3.9 seconds and will carry on all the way toa top speed of 196 mph. Both the six-speed manual and R-tronictransmissions will be available. This R8 also gets a set of all-LEDheadlamps as well as a new rear diffuser where a set of twin exhaustsreplace the quad pipes on the eight-cylinder R8. Larger air intakesalso beef up the area near the side blades in order to force more airinto the larger engine.
Pricing is said to start around $180,000, and we'll be sure to giveyou our full impressions when the car is unveiled this January. Untilthen, have a look through our gallery or click through the post to readAudi's official press release.
The Audi R8 5.2 FSI quattro: breathtaking performance
* The new 5.2-liter, ten-cylinder engine puts out 525 hp
* Sprint to 100 km/h in 3.9 seconds, top speed 316 km/h
* High-performance sports car with striking design
Ingolstadt – Audi is launching the next variant of itstop-of-the-line model. With the R8, the brand has established itself atthe forefront of high-end sports cars from the very start – and nowcomes the R8 V10. Its 5.2-liter, ten-cylinder engine churns out 386 kW(525 hp) and 530 Nm (390.91 lb-ft) of torque, which makes forbreathtaking performance. With superior Audi technologies such asquattro all-wheel drive, the lightweight aluminum body, the innovativeall-LED headlights, and its striking design, the
R8 V10 takes pole position against the competition.
The R8 V10 is the result of cumulative know-how from Audi's stringof Le Mans victories. Its naturally aspirated engine combines racingtechnology such as dry sump lubrication with FSI gasoline directinjection. The ten-cylinder design is the perfect synthesis forimpressive top performance, mighty pulling power, and low weight.Starting in 2009, this engine will also prove its potential on theworld's racetracks – in the new R8 racing car Audi is developing forcustomer teams in conformance with the GT3 rules.
The V10 engine in the production sports car will be almost identicalin construction to the one in the racing version. Its displacement is5,204 cc, at 6,500 rpm it delivers 530 Nm (390.91 lb-ft) of torque, at8,000 rpm its power tops out at 386 kW (525 hp).
The specific power output is 100.9 hp per liter of displacement –and each hp has to propel only 3.09 kilograms (6.91 lb) of weight,because the Audi R8 V10 in the version with the six-speed manualgearshift weighs only 1,620 kilograms (3571 lb). The engine accountsfor 258 of these kilograms (569 lb) – that's only 31 kilos (68 lb) morethan the V8.
The Audi R8 5.2 FSI quattro rockets from zero to 100 km/h (62.14mph) in 3.9 seconds. In the version with the sequentially shifting Rtronic it reaches 200 km/h (124.27 mph) in another 8.1 seconds. Eventhen its propulsive power hardly lessens: it's sufficient to reach atop speed of 316 km/h (196.35 mph). The immense force, the spontaneityand the thrust of the acceleration, plus the sound of the engine – allthese impressions coalesce into a breathtaking sports car experience.The V10 plays a concert with growling bass tones and powerful highnotes, which grows into a grandiose fortissimo as the engine revs up.This sonorous acceleration doesn't reach its limit until 8,700 rpm.
The 5.2-liter powerplant uses direct injection according to the FSIprinciple developed by Audi. A common rail system injects the fuel intothe combustion chambers with up to 120 bar of pressure. Directinjection reduces the susceptibility to knocking and provides a certainamount of cooling through the evaporation of the fuel, which in turnsupports a high compression ratio of 12.5:1. This in turn contributesto superior performance and improves fuel economy. The R8 V10 with Rtronic gets by on an average of 13.7 liters per 100 km (17.17 US mpg).
For maximum dynamics: low center of gravity engine
The technical refinements of the long-stroke ten-cylinder engineinclude dry sump lubrication, which allows the engine to be mounted lowwithin the chassis. The wide cylinder angle of 90 degrees also makesfor a low center of gravity. The crankcase is a high-strengthaluminum-alloy casting produced in a complex process. The connectingrods are made of forged steel, the pistons of aluminum. The fourcamshafts are chain-driven and each is adjustable through 42 degrees.This provides great latitude in controlling the valve timing. Incombination with the straight, flow-optimized ducts of the intakemanifold, this improves the charge throughout the entire speed range.
The R8 5.2 FSI quattro has a six-speed transmission. A precise andsmooth-shifting manual transmission comes as standard equipment. Thesequential R tronic is available as an option. The high-tech gearshiftconveys an authentic racing feel – with the rocker switches at thesteering wheel and the short shifting times of usually less thanone-tenth of a second. When the driver actuates the Launch Controlprogram by pressing a button, the R8 V10 takes off in a vehementquick-start with electronically controlled tire slip – both with the Rtronic and with the manual transmission.
A contributing factor to the wide lead in traction and drivingsafety of the Audi R8 V10 over the competition is quattro all-wheeldrive – it's the superior technology especially for a high-performancesports car. Four powered wheels get more grip than two. They enable thedriver to step on the gas sooner when coming out of a curve. It's notonly the traction that benefits, but also the transverse dynamics andthe stability.
44 to 56 percent – the ideal axle load distribution
[ 本帖最後由 carwing 於 2008-12-22 12:06 PM 編輯 ] |
發表於 2008-12-11 09:41 AM
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