Catalytic Converter: Description and Operation

Catalytic Converter System

Warm Up Three Way Catalytic Converter (WU-TWC) and Under-Floor Three Way Catalytic Converter (TWC)
The WU-TWC/TWC converts hydrocarbons (HC), carbon monoxide (CO), and oxides of nitrogen (NO(x)) in the exhaust gas to carbon dioxide (CO(2)), nitrogen (N(2)), and water vapor.