10 Facts About Catalytic converters

Catalytic converters converter is an exhaust emission control device that converts toxic gases and pollutants in exhaust gas from an internal combustion engine into less-toxic pollutants by catalyzing a redox reaction.

Catalytic converters are usually used with internal combustion engines fueled by gasoline or diesel, including lean-burn engines, and sometimes on kerosene heaters and stoves.

Catalytic converters were further developed by a series of engineers including Carl D Keith, John J Mooney, Antonio Eleazar, and Phillip Messina at Engelhard Corporation, creating the first production catalytic converter in 1973.

Three-way catalytic converters have the additional advantage of controlling the emission of nitric oxide and nitrogen dioxide, which are precursors to acid rain and smog.

Since 1981, "three-way" catalytic converters have been used in vehicle emission control systems in the United States and Canada; many other countries have adopted stringent vehicle emission regulations that in effect require three-way converters on gasoline-powered vehicles.

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In general, engines fitted with 3-way catalytic converters are equipped with a computerized closed-loop feedback fuel injection system using one or more oxygen sensors, though early in the deployment of three-way converters, carburetors equipped with feedback mixture control were used.

Three-way Catalytic converters are effective when the engine is operated within a narrow band of air-fuel ratios near the stoichiometric point.

When catalytic converters were first introduced, most vehicles used carburetors that provided a relatively rich air-fuel ratio.

Catalytic converters have proven to be reliable and effective in reducing noxious tailpipe emissions.

Welded-on Catalytic converters are at risk of theft, as they can be easily cut off.