Geneva show car based on all-new Audi TT features four-cylinder TFSI engine with exceptional 420PS output.
The scope for taking the power and performance of the Audi TT Coupé to unprecedented extremes has been explored in the TT quattro sport concept, a stunning 420PS show car based on the all-new TT which made its world debut this week at the Geneva Motor Show.
“With our Audi TT quattro sport concept show car, we wanted to demonstrate what the new TT’s technology can do if you take it a step further,” explains Prof. Dr. Ulrich Hackenberg, Board Member for Technical Development. “This car is designed for racing – an extreme driving machine for the motorsports enthusiasts among our customers.”
The four-cylinder, 2.0-litre TFSI engine in the Audi TT quattro sport concept makes a powerful statement. Delivering 420PS at 6,700 rpm, it establishes a new benchmark in the 2.0-litre category. Its specific output is 210PS per litre of displacement – more than 2001’s victorious Le Mans R18 racing car, which combined turbocharging with FSI direct injection for the first time in an Audi petrol engine. It also makes a maximum of 450 Nm of torque (331.90 lb-ft) available from 2,400 to 6,300 rpm, and even at just 1,900rpm is still able to deliver over 300Nm (221.27 lb-ft).
Tipping the scales at a relatively featherweight 1,344 kilograms, helped by paring back interior trim and equipment, and by the production car’s advanced Audi Space Frame construction and extensive aluminium panel content, the Audi TT quattro sport concept achieves an exceptional power-to-weight ratio of 312.5PS per ton. As a result, the four-cylinder engine can catapult it from 0 to 62mph in just 3.7 seconds.
Head of Powertrain Development Dr. Stefan Knirsch: “This high-performance power unit is an impressive demonstration of the power reserves available in our EA888 engine range. This power unit has received numerous awards all over the world and it already lives up to its claim in many Audi sporty models. In the TT quattro sport concept, it demonstrates its full power potential. The thirty-five years of experience we’ve gained in the field of turbocharging are manifested in this engine’s unique combination of maximum performance, dynamism, and fuel efficiency.”
The high-performance engine benefits from the successful EA888 technologies such as the Audi valvelift system (AVS) variable valve timing, dual camshaft adjustment, and dual injection system (FSI plus MPI). A wide range of modifications are featured, including special aluminium pistons with integrated cooling channels and an ultra-high-strength forged steel crankshaft.
The cylinder head has been further developed to enable it to contend with the higher loads and increased gas throughput, and the familiar, highly compact thin-wall cylinder crankcase has been strengthened in view of the higher power output through the use of a high-strength cast alloy. The exhaust-gas turbocharger is also a new development incorporating optimized mixed-flow technology, and produces up to 1.8 bar of charge pressure.
When driving, the four-cylinder unit’s reactions are breathtaking. The turbocharged direct-injection engine responds immediately to the throttle and revs eagerly right up to the fuel cut-off at 7,200 rpm. It transfers its torque to a compact, three-shaft S tronic dual-clutch transmission which shifts gears in split-seconds, adding its share to the show car’s impressive acceleration.
The permanent quattro all-wheel drive system oversees the smooth transfer of power to the road. Its hydraulically actuated, electronically controlled multi-disk clutch is located on the rear axle for optimum weight distribution, and can actively redistribute drive torque between the axles in milliseconds.
Article source: www.audi.co.uk