2009 Audi Sportback Concept Overview

Since its introduction in 2004, the concept of the Sportback has established itself in the compact class. The success of the Audi A3 Sportback has exceeded even the expectations of its makers – far more customers choose the four-door model with the large rear hatch than its three-door sibling.

But it is far more than two additional doors that sets the Audi A3 Sportback apart from the base model. It is characterized by the sporting elegance of a coupe, the versatility of a five-door model, sophisticated technology and pronounced sportiness – driving dynamics in a new guise.

The developers at Audi chose the world’s cleanest diesel technology as the unit best befitting the Audi Sportback concept show car. The six-cylinder 3.0 TDI clean diesel is equipped with a system for the effective reduction of nitrogen oxides. The diesel engine development engineers at Audi have combined an entire package of innovative measures for this latest TDI generation: The piezo common rail system with an injection pressure of 2,000 bar, highly efficient exhaust gas recirculation and optimized turbocharging result in significantly reduced raw engine emissions. One of the highlights are the combustion chamber sensors that enable even more precise regulation of the combustion processes in the engine – this is the first time that such sensors have been installed on any engine in the world, marking yet another Audi innovation.

The status of the new-generation TDI as the definitive clean-running, high-tech diesel is sealed by the downstream exhaust emission control system, which reduces emissions by up to 90 percent. The system uses AdBlue, a biologically degradable, waterborne additive that is injected in small amounts upstream of the DeNOx catalytic converter. In addition to the catalytic converter, the exhaust emission control system comprises the metering module, the AdBlue tank and heated lines, as well as an extensive system of sensors. The additional oxidizing catalytic converter and the highly efficient, regulated diesel particulate filter round off the comprehensive emission control system.

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