CATALYTIC CONVERTER SYSTEM OPERATION

• Toxic substances (HC, CO, NO_X) in exhaust gas are purified by oxidization and reduction while passing through the catalytic converter.

– Oxidation

• Combines toxic HC and CO with oxygen to produce non-toxic carbon dioxide and water.

O₂ + HC + CO → CO₂ + H₂O

• Converts toxic NO_X (nitrogen oxides) into non-toxic nitrogen and oxygen. Part of the oxygen produced in this process is used for oxidation.

NO_X → N₂ + O₂