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600ps audi tt concept gives a taste of future turbo power

First application of electric biturbo propulsion in a TFSI engine and 48v system power up the ante in Audi Wörthersee show car

• 600 PS and 650Nm (479.4 lb-ft), 0-62mph in 3.6 seconds and 192mph top speed
• Five-cylinder 2.5 TFSI fitted with electric bi-turbo for spontaneous response and torque boost of up to 200Nm
• quattro all-wheel drive, adjustable coilover suspension and manual transmission with open shift gate, 48-volt electrical system fitted
• Development chief Prof. Dr. Hackenberg: “Technology close to production readiness”
• Premiere at Wörthersee (May 13-16)

The atmosphere will be especially highly charged at this year’s Wörthersee Tour festival because it will play host to an Audi TT clubsport turbo concept delivering a colossal 600PS and 650Nm with the help of an innovative electrically driven biturbo compressor that is close to being production ready. With its stripped-out interior, wider stance and distinctive rear wing the most extreme TT to date is intentionally reminiscent of the thoroughbred Audi 90 IMSA GTO race car of the late 1980s, so it is guaranteed to make an impact at Austria’s annual meeting for Volkswagen Group enthusiasts.

“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.”

The Audi TT clubsport turbo has a power-boosted 2.5 TFSI engine with very impressive performance data. From 2,480 cc of displacement, the five-cylinder engine produces 600 PS of power and 650 Nm (479.4 lb-ft) of torque, the latter from 3,000 to 7,000 rpm. This means that it produces 240 PS and 260 Nm (191.8 lb-ft) per litre of displacement. Power is transferred via a manual six-speed transmission.

Thanks to systematic lightweight design, the TT clubsport turbo show car has an unladen weight of just 1,396 kg. The car completes the standard sprint from 0 to 62 mph in 3.6 seconds, with a top speed of 192 mph. The TT clubsport turbo plays out its big advantage over the first few metres of a sprint. Its electrically driven compressor lets it cover up to 16 metres within the first 2.5 seconds – which is six metres further than a comparable car without this innovation. That is a difference of around one and one-half car lengths.

Electric thrust: Additional compressor fills turbo hole

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.

The effect is impressive. The 2.5 TFSI engine builds up its tremendous power without any perceptible delay. This power is available in any situation – whenever the accelerator pedal is pressed. In an acceleration duel, the TT clubsport turbo effortlessly pulls away from a counterpart with an identically powered engine but no electric biturbo.

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).

Energy storage: the 48 volt electrical system

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 kerbs. Electronic stabilisation 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-colour look – both gloss turn finished and matt black – and the tyres are size 275/30. Carbon-fibre ceramic brake discs are mounted behind all four wheels; they are very lightweight and wear-resistant. The front brake discs measure 370 mm in diameter.

Widened by 14 cm: spectacular add-on parts

The compact sports car takes a full stance on the road with track widths of 1,736 mm in front and 1,729 mm at the rear. The car is 4.33 metres long and 1.97 metres wide, including the side mirrors – 14 cm wider than the technical platform upon which it was based. Its angular wings contribute a separate additive shape to the car body. They take the characteristic design motif of the Audi TT to an extreme and emphasise the quattro drive.

The wings of the show car – painted in the exterior colour Ferro Titanium – are open at the front and rear. Air from the car’s slipstream flows through them to cool the brakes. The Singleframe grille and large air inlets – whose vertical fins form a continuation to the light signature of the Matrix LED headlights – are also optimised for maximum air throughput.

The manually adjustable rear wing is an advanced development of the Audi Sport TT Cup with which the brand very recently launched a dedicated race series. It is now 20 cm wider, and the side flaps, which feature the four rings, were given a new geometry. The wing consists of carbon-fibre reinforced polymer (CFRP) as do all other add-on parts: the air inlets and the large splitter at the front, the side panels and side sill trims as well as the voluminous diffuser at the rear whose lateral segments reference the motif of the air inlets.

The interior: fully focused on the driver

A protective “cage” of ultra-high-strength titanium tubes makes the rear zone of the interior even more rigid and safe. In front, there are lightweight race car bucket seats with four-point harnesses. The display and operating concept with the digital Audi virtual cockpit focuses on the driver, who can control all key driving parameters via four satellite buttons on the multifunction steering wheel.

CFRP and black Alcantara define the interior of the Audi TT clubsport turbo. The race seats are upholstered in coral orange Alcantara and feature contrasting stitching and piping. In the doors and on the centre console, CFRP parts with their large surfaces create sporty accents, and the doors are closed by pulling on a tube-shaped grip with an Alcantara inlay. The air vents and gear shifter also have coral orange accents – the aluminium gear shift lever travels in an open shift gate.

Article source: www.audi.co.uk

Pilot plant in Dresden, Germany, delivers first consignment of high quality Audi e-diesel using CO2 from biogas and ambient air

• New synthetic fuel could make a significant contribution to climate protection 
• No need for mineral oil: e-diesel made from water, CO2 and green power
• Synthetic petrol (Audi e-gasoline) also in development

Ingolstadt/Berlin, April 22, 2015 – Audi has taken another big step in the development of new, CO2-neutral fuels: A pilot plant in Dresden, Germany, has started production of the synthetic fuel Audi e-d iesel.

After a commissioning phase of just four months, the research facility in Dresden started producing its first batches of high-quality diesel fuel a few days ago. The energy technology corporation sunfire is Audi’s project partner and the plant operator. It operates according to the power-to-liquid (PtL) principle and uses green power to produce a liquid fuel. The only raw materials needed are water and carbon dioxide. The CO2 used is currently supplied by a biogas facility. In addition, initially a portion of the CO2 needed is extracted from the ambient air by means of direct air capturing, a technology of Audi’s Zurich-based partner Climeworks.

Reiner Mangold, Head of Sustainable Product Development at Audi, sees Audi e-diesel and Audi e-fuels in general as an important component that complements electric mobility: “In developing Audi e-diesel we are promoting another fuel based on CO2 that will allow long-distance mobility with virtually no impact on the climate. Using CO2 as a raw material represents an opportunity not just for the automotive industry in Germany, but also to transfer the principle to other sectors and countries.”

Production of Audi e-diesel involves various steps: First, water heated up to form steam is broken down into hydrogen and oxygen by means of high-temperature electrolysis. This process, involving a temperature in excess of 800 degrees Celsius, is more efficient than conventional techniques because of heat recovery, for example. Another special feature of high-temperature electrolysis is that it can be used dynamically, to stabilise the grid when production of green power peaks.

In two further steps, the hydrogen reacts with the CO2 in synthesis reactors, again under pressure and at high temperature. The reaction product is a liquid made from long-chain hydrocarbon compounds, known as blue crude. The efficiency of the overall process – from renewable power to liquid hydrocarbon – is very high at around 70 percent. Similarly to a fossil crude oil, blue crude can be refined to yield the end product Audi e-diesel. This synthetic fuel is free from sulphur and aromatic hydrocarbons, and its high cetane number means it is readily ignitable. As lab tests conducted at Audi have shown, it is suitable for admixing with fossil diesel or, prospectively, for use as a fuel in its own right.

Construction work on the facility in Dresden-Reick kicked off in July 2013 and the plant was commissioned on November 14, 2014. The plant is set to produce over 3,000 litres of Audi e-diesel over the coming months. Audi is sunfire’s exclusive partner in the automotive sector.

Over and above the partnership with sunfire, Audi has been active in the development of CO2-neutral fuels – Audi e-fuels – since 2009. The Audi e-gas plant in Werlte, Lower Saxony, already produces Audi e-gas (synthetic methane) in a comparable manner to power the Audi A3 Sportback g-tron*, which is available in countries in which a suitable fuelling infrastructure exists. Audi is also conducting joint research into the synthetic manufacture of Audi e-gasoline with Global Bioenergies, of France. In a further project, Audi has joined forces with the U.S. company Joule, which uses microorganisms to produce the synthetic fuels Audi e-diesel and Audi e-ethanol.

Article source: www.audi.co.uk

More equipment for SE Executive, new Sport trim and emission improvements

• New Sport specification for A8 models includes striking exterior package and long list of standard technology
• 3.0 TDI quattro power increases to 262PS, yet emissions fall by 6g/km to 149g/km on SE and SE Executive models
• 2016 Model Year Audi A8 now available to order
• New look Sport versions available from June

New heights of luxury and new lows in CO2 output have just been achieved in the Audi A8 range, which in addition to further improved TDI engines and a raft of equipment upgrades also gains a striking new Sport specification with a look that references the flagship S8. The first versions of the updated 2016 Model Year A8 range can be ordered from today priced from £59,585 OTR, and the new Sport models from June. UK deliveries will start in the summer.

Offered in standard or Long Wheelbase formats, the latest range features a rationalised choice of engines. Long Wheelbase versions will continue to be available with the highly efficient petrol-electric hybrid drivetrain and with the quintessential Audi luxury saloon power source – the 6.3-litre, twelve-cylinder, 500PS W12. Another formidable petrol engine – the 4.0-litre TFSI with Cylinder-on-Demand technology – will also remain at the heart of the 520PS S8, which is available exclusively with the standard wheelbase.

A pair of TDI units powers standard wheelbase versions, and both are also available in conjunction with the Long Wheelbase body. The 3.0-litre V6 TDI benefits from a slight power increase from 258PS to 262PS and a further reduction in CO2 output from an already impressively low 155g/km to 149g/km (in conjunction with 18-inch wheel), equating to a combined economy figure of 49.6mpg. The 4.2-litre V8 TDI retains its prodigious 385PS and 850Nm of torque, enabling it to propel the predominantly aluminium-bodied saloon to 62mph in a mere 4.7 seconds (standard wheelbase) without ruling out the potential for up to 39.2mpg. CO2 output in this version also falls from 194g/km to 189g/km.

New Sport specification

The two TDI engines can be complemented by three levels of specification – SE, SE Executive and a new Sport option, which is reserved for standard wheelbase versions and replaces the Sport Executive trim in the outgoing range. Sport models are now more distinctly marked out visually by a new dynamic exterior package featuring front and rear treatments reminiscent of the flagship S8, combined with pronounced ‘S’ style side skirts and 19-inch alloy wheels in a seven-parallel spoke design.

Not surprisingly all three specification levels are lavish, and include features such as Valcona leather upholstery, double glazing and a 180-watt audio system, combined with advanced technology including all-LED headlights, HDD satellite navigation and the fingertip-sensitive MMI Touch infotainment control system.

Over and above the SE equipment, SE Executive versions add features such as the Audi parking system advanced with reversing camera, the advanced key for convenient locking, unlocking and starting without direct key intervention and powered, hands-free bootlid operation. New additions at this level for the 2016 Model Year include powered door closure, comfort front seats with 22-way powered adjustment and memory function and privacy glass for the rear windows.

In addition to a purposeful new look, the exterior specification of the new Sport models also includes new 19-inch seven parallel spoke alloy wheels and state-of-the-art MatrixBeam LED headlights, which use banks of LEDs that can be individually shut off to avoid dazzling oncoming and leading traffic while retaining full beam illumination. Inside, a 600-watt Bose sound system upgrade and Mobile Phone Preparation – High with Audi connect bringing in-car internet-based services and establishing a mobile Wi-Fi hotspot add to the potential for information and entertainment.

Long Wheelbase TDI, Long Wheelbase W12 and S8 models feature their own bespoke and even more all-encompassing equipment lists.

With its lightweight construction, quattro all-wheel-drive and standard four-mode adaptive air suspension the A8 has always been one of the most agile and controllable luxury saloons. A8 4.2 TDI models capitalise on these assets even more fully with the help of an additional sport differential enabling torque transfer between the rear wheels for greater adjustability, and driveability in all A8 models can be further enhanced by options such as a firmer sport version of the air suspension and a dynamic steering system.

Article source: www.audi.co.uk

All-new seven-seat luxury SUV with exceptional specification becomes available to order next month

• All-new Q7 priced from £50,340 OTR to £53,835 OTR – ordering opens in April, first customer deliveries begin in August
• Available at launch with 272 PS V6 TDI engine
• 218 PS 3.0 TDI quattro expected to open for ordering in late summer 2015
• Comprehensive standard specification includes MMI Navigation Plus with MMI Touch, Audi connect (3 month trial), Audi drive select, keyless go, parking system plus, powered tailgate
• S line versions fitted with all-weather LED headlights, 20-inch alloy wheels, privacy glass, four-zone climate control and S line styling enhancements