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INGOLSTADT, Germany - Audi is expanding the TT line with anew entry-level engine: the 1.8 TFSI. This highly efficient four-cylinderengine with turbocharger and direct injection, with 118 kW (160 hp) and 250Nm (184.39 lb-ft) torque, lends the TT Coupé and TT Roadster sportyperformance. A second innovation rounds out the program: The 2.0 TFSI nowis also available with quattro all-wheel drive.
The 1.8 TFSI is a high-tech engine that combines all of the features ofmodern engine technology. It is highly compact, and at just 135 kilograms(297.62 lb), it is unusually light. An adjustable intake camshaft improvesthe process of filling the combustion chambers, while two balancing shaftsrefine the engine’s running character. Thanks to a new type ofdemand-based control strategy, the oil pump uses minimal energy andtherefore contributes to lower fuel consumption. The pump delivers only theamount of oil needed by the engine in its current mode of operation.
With the direct fuel injection featured by the new entry-level engine,fuel is injected directly into the four-valve cylinder head at 150 barpressure from a high-pressure accumulator through newly developed, six-holeinjectors. There it mixes with air that is set into a swirling motion byflaps in the intake manifold.
The mixture is homogenous; 14.7 parts of air are added to one part fuel.Evaporation of the directly injected fuel cools the combustion chamber,which – when combined with turbocharging – provides a highcompression ratio. The charger is designed to react swiftly to demand sothat the engine quickly reaches maximum torque and remains at this highlevel for long periods. The result is high elasticity at any rpm.
Turbocharger and FSI: The perfect combination
Direct injection and turbocharger technology are the perfect combinationfor outstanding driving enjoyment and impressive efficiency. With its 1,798cc of volumetric displacement, the 1.8 TFSI is able to achieve powersimilar to that of a naturally aspirated V6 of years past: With engineoutput of 118 kW (160 hp), it features peak torque of 250 Nm (184.39 lb-ft)available between 1,500 to 4,500 rpm. The undersquare engine meanwhileoffers great fuel efficiency – with the Coupé using just 6.7 litersper 100 kilometers (35.11 mpg) and the Roadster using 6.9 liters per 100 km(34.09 mpg).
The 1.8 TFSI, whose torque flows to the front wheels through a six-speedmanual transmission, offers responsive, light-footed, high-revving andpowerful performance. It propels the Audi TT Coupé to 100 km/h (62.14 mph)in just 7.2 seconds, and on up to a top speed of 226 km/h (140.43 mph); forthe Audi TT Roadster these figures are 7.4 seconds and 223 km/h (138.57mph). This dynamic performance is also due to the low total weight: theCoupé weighs a mere 1,240 kilograms (2,733.73 lb), and the Roadster just1,285 kilograms (2,832.94 lb). Both car bodies consist primarily ofaluminum – here as well, Audi proves its superb capabilities in thearea of lightweight design.
Even greater traction: quattro for the 2.0 TFSI
Also new to the Audi TT lineup is quattro all-wheel drive for thetop-selling 2.0 TFSI – it boosts traction, which in turn increasessafety and driving enjoyment. The high-tech S tronic transmission shiftsthrough its six gears without any perceptible interruption in the powerflow. The core of the quattro drive system – the electronicallycontrolled and hydraulically activated multidisk clutch – works evenmore quickly than before thanks to a new accumulator. Within milliseconds,it redirects power from the front to the rear wheels as needed.
The TFSI four-cylinder engine draws its power from a displacement of1,984 cc. Like its little brother, it combines the FSI direct fuelinjection technology developed by Audi with the turbocharger. The highlyrefined four-valve engine delivers 147 kW (200 hp) and constantly applies280 Nm (206.52 lb-ft) of torque to the crankshaft between 1,700 and 5,000rpm. The peak speed for the Coupé is 238 km/h (147.89 mph), and 235 km/h(146.02 mph) for the Roadster; the sprint from 0 to 100 km/h (62.14 mph) iscompleted in 6.2 and 6.4 seconds, respectively. Fuel consumption for theCoupé is just 7.7 liters per 100 km (30.55 mpg) and 7.8 liters per 100kilometers (30.16 mpg) for the Roadster.
The TT 1.8 TFSI and the 2.0 TFSI quattro will roll out to dealers in thefirst half of the year. Entry into the dynamic world of TT starts at EUR29,400 for the Coupé and EUR 30,500 for the Roadster. The 2.0 TFSI quattroS tronic lists for EUR 37,250 and EUR 38,300, respectively.
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