2008 Audi A3 TDI Clubsport Quattro Concept Pictures, Specifications, Information
||3-door hatchback, concept car
|Miles Per Gallon:
||Turbocharged Diesel Inline-4
||224 bhp @ ---- rpm
||332 lb-ft @ ---- rpm
||f: --.- / r: --.- in
||--.- sec @ --- mph
|Braking, 60-0 mph:
|Nürburgring Lap Time:
A TDI from Audi is more than just another diesel – it is, in fact, a dynamic power unit and a rich source of driving pleasure. At the 27th annual Lake Wörther Tour being held in the Austria province of Carinthia from May 21-25, Audi is demonstrating the potential of TDI technology with a very special concept study: the Audi A3 TDI clubsport quattro is powered by an engine delivering a whole 165 kW (224 hp) from its displacement of two liters. And with a torque of 450 Nm (331.90 lb-ft), it endows the premium compact model with the pulling power of a sports car.
The Audi A3 TDI clubsport quattro qualifies as an uncompromising sports machine in all other technical respects too. A six-speed transmission channels the engine's power to the quattro all-wheel drive. 20-inch wheels keep the drive force glued to the road; behind the wheels at the front can be found brake disks made from carbon-fiber-reinforced ceramic. Using the Audi drive select driving dynamics system the driver is able to adjust the throttle response and exhaust sound characteristics, the steering's power assistance, the ESP control and the damper characteristics as desired.
The dynamic image presented by the scintillating A3 study is rounded off by spectacular body styling and a high-class, sporty interior. Parts such as bolt-on wheel arch extensions and a large rear spoiler lend lasting impact to the exterior's looks; the interior is dominated by the racing bucket seats in the front and the open aluminum gear lever gate. Design
The design team has kitted out the Audi A3 TDI clubsport quattro with a whole array of new exterior parts to give it an extremely sharp and dynamic look – almost like a racing car. The paint finish is also a picture of vibrancy: the engine hood, tailgate and roof are Ibis White and the flanks Brilliant Red, while a large white figure "8" is emblazoned across each door in reference to the year 2008. The color scheme is an allusion to the colors of the Austrian national flag.
The single-frame grille has grown slightly in width, which also entailed modifications to the engine hood. The grille's bars – including pronounced vertical sections – have a high-gloss black finish. The bi-xenon headlamp assemblies are embellished by LED daytime running lights and wings. The front bumper incorporates large, square-edged air intakes, together with a blade section that juts a long way forwards and is slightly raised in the centre.
The modified front fenders feature bolt-on wheel arch extensions. The doors and the rear side sections – again with muscular wheel arch paneling – have been given a new, boldly contoured flare at the bottom. This blends together harmoniously with the door sills, which have themselves been restyled. The exterior mirror housings, with their arms that look to have been crafted by the wind, are likewise new. The tinted glass used for the rear windows gives the model yet greater visual presence.
The tail of the Audi A3 TDI clubsport quattro sports a dark grey diffuser. It is a variant on the design of the front blade, and incorporates the two large circular tailpipes of the separate exhaust branches. Modifications have also been carried out to the tail light assemblies. The most striking impression, however, is made by the spoiler atop the rear window that bears a close resemblance to the part featured on the new A4 race car from the German Touring Car Masters (DTM).
Inside the Audi A3 TDI clubsport quattro, the eye is immediately caught by the illuminated door sill trims with their "TDI Power" badging. Awaiting the driver and front passenger are anatomically shaped bucket seats, just like those found in motor racing cars. The rear seats sport the same upholstery design, with special foam padding used to sculpture them into roomy and comfortable individual seats.
The driver takes hold of an elegantly styled steering wheel with a flat-bottomed rim that is reminiscent of the Audi R8 high-performance sports car. The scales of the dials are colored white, the monitor for navigation and entertainment together with its control panel stems from the R8. The jet-style air outlets have multi-way adjustable louvers, and the usual buttons in the center console have given way to classic, sporty toggle switches. The bars underneath the console are covered in leather, the door handles have been milled hollow to save weight. The door linings and floor mats have been newly designed.
The high-performance TDI under the bonnet of the Audi A3 TDI clubsport quattro is like nothing that has gone before it. From its displacement of just 1,968 cc, it summons up an output of 165 kW (224 hp). Torque – the true measure of effortless motoring ability – peaks at an exhilarating 450 Nm (331.90 lb-ft), which is on tap from just 1,750 rpm; in other words, the very bottom of the rev range. As for in-gear flexibility, the diesel model leaves its gasoline-powered rivals standing.
The mighty TDI bestows the Audi A3 TDI clubsport quattro – which tips the scales at just 1,475 kilograms (3251.82 lb) – with pulling power befitting of a sports car. The sprint from 0 to 100 km/h (62.14 mph) is over in a fleeting 6.6 seconds and the speedometer needle keeps rising all the way to 240 km/h (149.13 mph).
The four-valve sports engine is smart too; it responds spontaneously to the throttle and pampers the occupants with the low-vibration running of its mechanics. On an acoustic level, however, it proudly proclaims its abilities for all to hear: the exhaust system is a new development, with controllable resonance chambers on both tailpipes to amplify the rich, sonorous sound.
The engineers took as a basis the undersquare engine (bore x stroke = 81.0 x 95.5 millimeters) with an output of either 103 kW (140 hp) or 125 kW (170 hp), depending on the configuration, and added to it an optimized turbocharger. The advanced design of its blades allows it to supply more air; as in the series-production version, the variable geometry of the turbine's blades ensures spontaneous response.
The 2.0 TDI, which is managed by one of the most sophisticated control units currently available on the market, is brimming with high tech. Fuel injection is handled by a common-rail system with piezoelectric injectors and eight-hole nozzles. The high-precision metering of as many as five injections of fuel per power stroke has the effect of audibly reducing the noise level. The system operates at a pressure of 1,800 bar – this results in extremely fine atomization of the fuel which, together with the revised piston geometry, makes the combustion process a highly efficient one.
The engine's intake manifold houses swirl flaps that generate a tumbling action in the inflowing air; electric motors regulate the flaps" position so that this tumbling motion is always perfectly suited to the current load and engine speed. Two balancer shafts in the engine reduce the degree of vibration in the crank drive. The drive unit for the belt that propels the two camshafts has also been reworked with a view to improving the engine's acoustics.
In its high-performance 165 kW (224 hp) version, the 2.0 TDI unit is still able to make use of a high proportion of recirculated and sharply cooled exhaust gas to achieve cooler combustion with lower oxygen levels – this brings about a substantial reduction in untreated nitrogen oxide emissions. The four-cylinder power unit already complies with the limits of the Euro 5 emissions standard, which is not due to come into force until September 2010 and whose foremost aim is to cut NOx emissions.
The ultra-efficient two-liter engine attains a power-to-displacement ratio of 83.8 kW (113.8 hp) per liter, and torque-to-displacement ratio of 228.7 Nm (168.68 lb-ft) per liter – figures which comparable gasoline engines are simply unable to match.
The Audi A3 TDI clubsport quattro has been designed strictly in accordance with the principle of maximum efficiency. Power is transferred by a compact, transverse-mounted six-speed transmission whose casing is made from lightweight magnesium. The short-throw gear lever can be moved swiftly and precisely through a classic open gate made of aluminum. The transmission ratios have been adjusted and the components reinforced to make allowance for the TDI engine's extremely high performance.
The engine's power is transferred to the road with virtually zero losses thanks to the quattro all-wheel drive. The system's key component is a multi-plate clutch which is positioned at the rear, thereby further optimizing the weight distribution. Under normal driving conditions, the electronically controlled and hydraulically operated clutch directs the engine's drive power to the front wheels; whenever necessary, however, an infinitely adjustable proportion of the propulsive force can be diverted rearwards.
When altering the power split, the plates inside the clutch are subjected to high oil pressure, pushing them together – a procedure which is completed in a matter of milliseconds thanks to a newly designed pressure reservoir for the pump. The quattro drive constitutes the perfect power transmission system for the mighty two-door model, significantly enhancing traction, handling characteristics, stability and straight-line running, whatever the weather.
The Audi A3 TDI clubsport quattro comes equipped with a sports suspension that is more than capable of handling the formidable power. The front suspension – a classic McPherson layout – is pivoted on a light, high-strength aluminum subframe. A rack-and-pinion steering system with a direct ratio produces a sensation of close contact with the road. Power assistance is generated by an electromechanical drive unit for high efficiency, and its level decreases as the speed increases.
The rear suspension comprises four links per wheel which fulfill all manner of tasks. The trailing links absorb the propulsive and braking forces. As an aid to ride comfort, their configuration is relatively soft. The connections to the three transverse links, on the other hand, are rigid in order to direct transverse forces into the body with absolute precision. In this instance, the coil springs and shock absorbers are also kept separate from one another. The set-up is decidedly firm, while the body has been lowered by 36 millimeters (1.42 inches) compared to the standard production version.
The Audi A3 TDI clubsport quattro rides on impressive ten-spoke wheels measuring 9 J x 20, which are in turn shod with size 265/30 ZR 20 tires.
Whereas the brakes at the rear wheels were borrowed from the series-production A3, their counterparts on the front would not be out of place on a supercar: six-piston calipers exert a vice-like grip on brake discs measuring 356 millimeters (14.02 inches) in diameter. The discs themselves are made of a material which has been of tremendous value to the aerospace industry, consisting of high-strength carbon fibers embedded in hard silicon carbide.
They have a lightweight construction, can withstand extreme levels of strain, are corrosion-free and have a service life in the region of 300,000 km (approx. 186,400 miles).
Image Credits: Audi
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