CATALYTIC CONVERTER SYSTEM OPERATION [L3]
BUE011600050N03
• Contaminants in the exhaust gas (HC, CO, NOx) are purified by oxidization and deoxidization while passing through the catalytic converter.
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- Oxidization process
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• Noxious HC (hydrocarbon) and CO (carbon monoxide) are bonded to oxygen which is converted to non-noxious carbon dioxide and water.
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O2 + HC + CO → CO2 + H2O
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- Deoxidization process
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• Noxious NOx (nitrogen oxide) is converted to non-noxious nitrogen and oxygen.A part of the oxygen generated at this time is used in the oxidization process.
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NOx → N2 + O2