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 TT Sportback Concept
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<< Prev Page 3 of 3  The 2.0 TFSI engine in the Audi TT Sportback concept captivates with its performance characteristics: It generates 294 kW (400 hp) at 6,400 rpm, with a specific output of 147 kW (200 hp) per liter of displacement. The four-cylinder engine puts 450 Nm (331.9 lb-ft) of torque on the crankshaft between 2,400 and 6,000 rpm, with over 300 Nm (221.3 lb-ft) already available at just 1,900 rpm. The high-performance engine limits fuel consumption to an average of 7.0 liters per 100 kilometers (33.6 US mpg). This equates to CO2 emissions of 162 grams per kilometer (260.7 g/mi).As a member of the Audi EA 888 engine family, there is a comprehensive package of high-end technology on board for the turbocharged direct-injection unit. The camshaft adjustment on the intake and exhaust sides and the Audi valvelift system, which varies the stroke of the exhaust valves in two stages, ensure good filling of the combustion chambers. At part load, indirect injection complements the FSI direct injection. The exhaust manifold embedded in the cylinder head is an important component of the thermal management. The flow of coolant is managed by a powerful rotary slide module. In order to generate the high power output, the 2.0 TFSI has undergone profound modifications, including special aluminum pistons with an integrated cooling channel and a crankshaft made from ultra-high-strength forged steel. The crankcase consists of a new, high-strength casting alloy and the cylinder head has been designed for the increased gas flow rate. The turbocharger has also been redeveloped and builds up a maximum relative boost pressure of 1.8 bar. It contains a mixed flow turbine wheel that is noted for its particularly fast start-up performance. When driving, the four-cylinder unit's extreme dynamics are breathtaking. The turbocharged direct-injection engine accelerates the Audi TT Sportback concept from 0 to 100 km/h (62.1 mph) in 3.9 seconds, demonstrating excellent response characteristics and running at 7,200 rpm up to the maximum rated speed. The sporty sound is made even more resonant as the load and engine speed increase. The force of the engine flows into a compact seven-speed S tronic with a three-shaft layout that performs direct gear changes in a few hundredths of a second. The driver can let the dual-clutch transmission operate in two automatic programs or take control using the paddles on the steering wheel. Power is delivered to the road via quattro permanent all-wheel drive. For optimal weight distribution, the hydraulically actuated and electronically controlled multi-plate clutch is located on the rear axle. The quattro drive actively controls the distribution of torque between the axles in milliseconds, thus adding to the car's dynamic handling. The suspension also reflects the technological expertise behind the Audi TT Sportback concept. The front suspension is based on a McPherson system; aluminum components reduce the weight of the unsprung chassis masses. The four-link rear suspension can process the longitudinal and transverse forces separately. The large wheels have a 21-inch diameter and a tire format of 255/30. The four brake discs in 18-inch format feature a weight-saving wave design. The Electronic Stabilization Control (ESC) adds the final touch to the handling. A sub-function of the ESC is enabled at the cornering threshold - through minimal application of the brakes at the wheels on the inside of the curve, which are reduced of load, the wheel-selective torque control diverts the drive torque to the wheels on the outside of the curve. For the driver, this means a further boost in terms of neutrality, stability and traction. The body plays a leading role in the lightweight construction concept of the Audi TT Sportback concept on the basis of the modular transverse matrix (MQB). The entire front section is made from steel. The passenger compartment floor comprises high-strength, hot-shaped steel components which, thanks to their outstanding strength properties, feature thin walls and are correspondingly light. The compartment's structure, the outer skin, and the doors and lids are made of the classic Audi semi-finished aluminum products cast node, extruded profile and sheet metal. With its composite concept, the body represents the latest evolution of the Audi Space Frame (ASF). Its hybrid construction ensures that the show car has a low center of gravity - ideal for sporty driving. << Prev Page 3 of 3 |
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