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Automobile exhaust gas catalytic converter performance characteristics

source：/ | Release time：2023-10-09

Three-way catalytic converter performance stable, reliable quality, long life, its products are widely used in Toyota, Honda, Buick, Audi, Volkswagen, Hyundai, Suzuki, Changhe and other models. The carrier component of the three-way catalyst is a porous ceramic material installed in a special exhaust pipe. It is called a carrier because it does not participate in the catalytic reaction itself, but is covered with a layer of platinum, rhodium, palladium and other precious, heavy metals. It turns HC and CO from the exhaust gas into water and CO2, which together break Nox down into nitrogen and oxygen. HC, Co are toxic gases, excessive inhalation will lead to death, and NOX will directly lead to the occurrence of photochemical smog. It is proved that the three-way catalytic converter is an effective method to reduce these emissions. In response to oxidation and reduction, carbon monoxide is oxidized to carbon dioxide, hydrocarbons are oxidized to water and carbon dioxide, and nitrogen oxides are reduced to nitrogen and oxygen. All three harmful gases have become harmless. When the temperature is too low, the conversion efficiency will drop sharply, while the active temperature of the catalyst (the better working temperature) is about 400 ° C to 800 ° C, too high will also make the aging of catalysts. Under the ideal air-fuel ratio (14.7:1) , the catalytic conversion effect is also good.

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