CATALYTIC CONVERTER SYSTEM OPERATION


BHE011620500T03

• Toxic substances (HC, CO, NOX) 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
– Reduction
• Converts toxic NOX (nitrogen oxides) into non-toxic nitrogen and oxygen. Part of the oxygen produced in this process is used for oxidation.
NOX → N2 + O2