Catalytic Converter: Description and Operation

Catalytic Converter System

Warm Up/Three Way Catalytic Converter (WU-TWC) and Three Way Catalytic Converter (TWO)

The WU-TWC/TWC converts hydrocarbons (HC), carbon monoxide (CO), and oxides of nitrogen (NOx) in the exhaust gas to carbon dioxide (CO2), nitrogen (N2), and water vapor.