Audi TT Clubsport Turbo unveiled

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Audi TT Clubsport Turbo unveiled

Postby Bharat » Sun May 10, 2015 7:18 am

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From May 13 to 16, Audi will be showing its technology concept car on the Wörthersee Tour in the Austrian town of Reifnitz. The inspiration for the show car came from the successful Audi 90 IMSA GTO of the late 1980s. A new technology is making its debut under the hood. The car’s electric biturbo adds even more dynamism to the driving experience with its spontaneous response.

“The electric biturbo signifies a new dimension in driving enjoyment; it boosts sprinting ability and torque and enables high peak power,
” explains Prof. Dr. Ulrich Hackenberg, Audi Board Member for Technical Development.
“In our TDI engines, we are close to production readiness with this technology. We are now presenting it in a TFSI – here too, we are the first automaker in the world to do this. For our fans at Wörthersee, we have packaged the electric biturbo in a very sporty show car.”


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The Audi TT clubsport turbo has a power-boosted 2.5 TFSI engine. From 2,480 cc of displacement, the five-cylinder engine produces 441 kW (600 hp) of power and 650 Nm (479.4 lb-ft) of torque, the latter from 3,000 to 7,000 rpm. Power is transferred via a manual six-speed transmission.

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Thanks to systematic lightweight design, the TT clubsport turbo show car has an unladen weight of just 1,396 kg (3,077.7 lb). The car completes the standard sprint from 0 to 100 km/h (62.1 mph) in 3.6 seconds, and its top speed is 310 km/h (192.6 mph). The TT clubsport turbo plays out its big advantage over the first few meters of a sprint. Its electrically driven compressor lets it cover up to 16 meters (52.5 ft) within the first 2.5 seconds – which is six meters (19.7 ft) further than a comparable car without this innovation. That is a difference of around one and one-half car lengths.

Electric thrust :

An electrically powered compressor offers significant advantages: It revs up to maximum rpm rapidly and without any perceptible delay, and it continues to boost charge pressure when too little drive energy is left in the exhaust gas for the conventional turbocharger. This operating principle makes it possible to design the conventional turbocharger more specifically for high charge pressures and consequently for high engine power – the e-turbo assures spontaneous response and powerful sprints from low engine speeds at all times.

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Energy storage: the 48‑volt electrical system

However, it is not just the power of the five-cylinder engine that is fascinating – so is its unmistakable throaty sound. The exhaust system is designed for minimal back-pressure; a side pipe to the ambient air is located immediately after the racing-type muffler. The 2.5 TFSI engine is cooled by a racing-type radiator. In the lower engine speed range, the electrically driven compressor boosts torque by up to 200 Nm (147.5 lb-ft). A dedicated 48‑volt electrical sub-system – another key future technology from Audi – supplies electrical energy to the turbocharger. A compact lithium-ion battery in the luggage compartment stores the energy that is generated by recuperation when coasting. A DC/DC converter provides the connection to the 12‑volt electrical system.

The power of the Audi TT clubsport turbo reaches the road impressively via a quattro permanent all-wheel drive system whose multi-plate clutch is mounted on the rear axle for better weight distribution. A coilover suspension system enables highly precise adjustment of the body’s ride height and the compression and rebound of the shock absorbers. An electric lifting function protects the equipment from damage by street curbs. Electronic stabilization control (ESC) and torque vectoring round out the dynamic qualities of the suspension ideally.

The show car’s wheels are size 9.5 J x 20. Their six twin-spoke design is finished in a bi-color look – both gloss turn finished and matt black – and the tires are size 275/30. Carbon-fiber ceramic brake discs are mounted behind all four wheels; they are very lightweight and wear-resistant. The front brake discs measure 370 mm (14.6 in) in diameter.

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Bharat
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