Exhaust gas cleaning system

When the Audi 100 TDI was launched back in 1989, an oxidation catalyst was sufficient to clean the exhaust gas. In the early years of the new millennium, the technology made rapid progress as particulate filters became standard equipment. Exhaust gas cleaning has been at the core of diesel technology ever since. Today, the Euro 6 emissions standard necessitates the installation of high-tech systems such as SCR/DPF catalytic converters. They are designed to respond as early as possible – the increasing efficiency of Audi TDI engines is continually reducing exhaust gas temperatures.