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The catalytic converter is one of many exhaust parts necessary for your cars operation. The use of this device is due to the need to remove a high percentage of the accompanying toxic gases from engine exhaust fumes. Only mandatory use is regulated in some countries, where road traffic is intense and therefore high environmental pollution. The dynamics of its operation is complex and dependent on several factors that must be accurately controlled to achieve the objective, the modern way to feed the injection gasoline engine assisted by computer, and use of precision sensors have enabled the efficient catalytic converter to be a reality.


In this device hot gases come from the engine and its interior chemical reactions that convert the toxic gases into non-toxic gases at the outlet. Reactions occur catalytically so it derives its name. In modern converters (triple action) the changes are produced by changing the carbon monoxide (CO), oxides of nitrogen and unburned hydrocarbons (CnHm) coming from the engine, carbon dioxide (CO2), molecular nitrogen (N2) and water (H2O). Previously only transformed converters unburned hydrocarbons and carbon monoxide were called double-acting, but now are considered obsolete or have a limited field of use.

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