Catalytic Converter: Description and Operation

Exhaust System / Emission Control

The exhaust system not only ensures that pollutants are cleaned from combustion exhaust gases, it also has a significant effect on the acoustics of the vehicle. The main function of the exhaust system is after-treatment of the exhaust gas.

Cayenne S exhaust system







Twin-branch exhaust system with branch coupling connection
1 Exhaust manifold, bank 1/2
2 Wideband oxygen sensor LSU 4.9 ahead of catalytic converter, bank
3 Primary catalytic converter (ceramic substrate), bank 1/2
4 Step oxygen sensor LSF 4.2 behind catalytic converter, bank 1/2
5 2 main catalytic converters (metal substrate), bank 1/2