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2009 Audi Sports Car roadster/coupe TT-RS

Although the 2009 Audi TT has improved greatly on previous models in terms of general fun-factory and handling, enthusiasts still don't place it in the same league as the M Coupes, Boxter/Caymans and S2000s of the world. The S line model, which debuted in 2008, served up a big helping of improvements, but Audi fans still wanted more.

2009 Audi TT-RS

Audi is once again producing a five-cylinder engine – and a very special one at that. Arriving at dealerships this summer, the TT RS has a turbocharged 2.5-liter engine with direct gasoline injection; it produces 250 kW (340 bhp) and 450 Nm (331.90 lb.-ft.) of torque. The blazing five-cylinder engine enables the TT RS to perform extraordinary feats. In conjunction with quattro permanent all-wheel drive and a high-performance chassis, the engine makes the compact Audi TT RS a top-notch sports car – available as a coupĂ© or roadster.

Sporty 5-cylinder fuel engines have a long legacy at Audi. The maximum famous is arguably the turbocharged 2.1-liter engine in the Audi quattro. The first model, which became released in 1980, provided an outstanding 147 kW (200 bhp). And the Sport quattro from 1984, without delay stimulated through motorsport, introduced a whopping 225 kW (306 bhp). For 25 years, turbochargers and quattro have been a dynamic components for success.

Audi has resumed the usage of this recipe. Designed from scratch, the 5-cylinder engine combines a turbocharger with FSI direct fuel injection to elevate the TT RS to a excessive-overall performance sports car. The TFSI delivers 250 kW (340 bhp) from a displacement of 2,480 cc (151.34 cu in): a selected output of one hundred.Eight kW (137.1 bhp) in keeping with liter.

The energy-to-weight ratio is likewise first rate. In the case of the Coup?, which weighs in at a trifling 1,450 kilograms (3,196.70 pounds), the electricity-to-weight ratio is simply four.Three kilograms in line with bhp.

The TT RS Coup? Rockets from zero to a hundred km/h (zero to 62.14 mph) in four.6 seconds; the Roadster desires only a tenth of a 2d longer. The confined top speed of 250 km/h (155.34 mph) is merely the legitimate determine for each versions; as an choice, Audi can boom it to 280 km/h (173.98 mph).

Almost even greater brilliant is the aggressive pulling power. The most torque of 450 Nm (331.90 lb.-feet.) is constantly to be had between 1,six hundred and five,300 rpm. In addition, the TT RS overtakes without the slightest effort. Last but no longer least, its engine makes passengers? Pores and skin tingle time and again way to its speedy and effective reaction, its inspiring unfastened-revving person, and its unmistakably guttural tailpipes: five-cylinder classical music by means of Audi!

As an uncompromising sports activities-automobile engine, the two.Five-liter TFSI is extremely-compact. Just forty nine centimeters (19.29 inches) in period, it is ideally suited for transverse set up inside the TT RS. And its weight of just 183 kilograms (403.45 pounds) also units a report. The crankcase is fabricated from vermicular-graphite cast iron. This excessive-tech material unites the maximum in strength with low weight; it has in any other case only been used for the massive TDI engines from Audi. Perfectly placed reinforcements enhance the block?S loadability. The light-weight cylinder head, the pistons, and the connecting rod are lightweight in addition to excessive-power.

The ultra-effective five-cylinder engine is extraordinarily gas-efficient, requiring a median of just nine.2 liters/a hundred km [25.57 mpg] as regards the Coup? (Roadster: 9.5 l/a hundred km [24.76 mpg]). Switchable flaps inside the intake manifold blend the incoming air in a calculated configuration. Injected at a pressure as excessive as one hundred twenty bar by using the commonplace-rail machine, the gasoline swirls intensely within the combustion chamber ? Which in flip cools the walls. This sooner or later enables a compression ratio of 10.Zero:1, which could be very high for a turbocharged engine. Both of the adjustable camshafts, controlled thru chains, also beautify charging efficiency with appreciate to the air-fuel mixture.

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