Catalytic Converter System

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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 (NOx) in the exhaust gas to carbon dioxide (CO₂ ), nitrogen (N₂ ), and water vapor.

WU-TWC:

Fig 1: Identifying Three Way Catalytic Converter (WU-TWC)

Courtesy of AMERICAN HONDA MOTOR CO., INC.

TWC:

Fig 2: Identifying Under-Floor Three Way Catalytic Converter (TWC)

Courtesy of AMERICAN HONDA MOTOR CO., INC.