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Catalytic converter prototypes were first designed in France at the end of the 19th century, when only a few thousand "oil cars" were on the roads; these prototypes had inert clay-based materials coated with platinum, rhodium, and palladium and sealed into a double metallic cylinder. [6]
The initial catalytic converters were installed in cars in the 1975 model year. In 1976, the three-way catalyst was introduced, which, after updates, has been able to eliminate 97% of tailpipe hydrocarbon emissions, 96% of carbon monoxide and 90% of nitrogen oxides produced in automobile engines and those used in light trucks and sport utility ...
He built a generic catalytic converter capable of reducing carbon monoxide and unburned hydrocarbons from automobile exhausts. For his design, he received U.S. Patent 2,742,437 in 1956. [ 2 ] [ 13 ] [ 32 ] Catalytic converters eventually became standard equipment in American cars, following passage of the Clean Air Act , introduced by Edmund S ...
It is a U.S. legal requirement to have a catalytic converter. [3] [4] Converters may not be removed from a vehicle that is used only for "off-road" driving in the United States. [5] The main purpose of a catalytic converter on an automobile is to reduce harmful emissions of hydrocarbons, carbon monoxide, and nitrogen oxides into the atmosphere.
In 1970, Taylor joined General Motors where she is known for her work at General Motors on catalytic converters that helped reduce pollution from car exhaust, following work done earlier by Eugene Houdry. [1] Taylor developed catalytic converters that converted nitric oxide into nitrogen, instead of ammonia, a toxin to humans. [1]
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Catalytic-converter-equipped vehicles have helped cut other air pollutants by more than 3 billion tons worldwide between 1975 and 2000; of this 1.5 billion short tons was in the United States. Automobiles meet emission standards that required reductions of up to 98+ percent for HC, 96 percent for CO, and 95 percent for NOx compared to the ...