Breathtakingly powerful Audi R8 GT: 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 90-degree cylinder angle and lubrication of dry-flood, 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 provides a unique rhythm V10 sounds interesting – music, grand very technical like that in a race. Two flaps in the exhaust system and tone adjust the volume as a function of engine speed and load.
Aspirated engines typically 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.
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