three-way catalytic converter, a gas purification system in a car, generally mounted on the outside of the automotive exhaust system, responsible exclude harmful vehicle exhaust gases discharged into harmless substances by chemical, etc., is a important automotive environmental initiatives. Since catalytic converters of three main process off-gas of harmful substances, purifying it, so that ldquo; three yuan rdquo ;. .
1 three-way catalytic converter works
Structure: three-way catalytic converter primarily consists of a metal housing, a chassis and a network composed of a catalytic layer, played the most important role it is the catalytic layer, which is attached above the layer of platinum, rhodium and other precious metal catalyst. Automobile exhaust faction contains hydrocarbons and carbon monoxide are toxic gases, not only pollute the environment, and would harm the human body.
Working principle: when a high temperature by the exhaust gas purifying apparatus automobiles, three-way catalyst in the purifying agent will enhance carbon monoxide, hydrocarbons and nitrogen oxides activity of three gases, which cause the oxidation of certain – chemical reduction reaction, hydrocarbons and carbon monoxide oxidation reaction occurs in the catalyst, generatingWater and carbon dioxide, so that the exhaust gas composition is changed. Moreover, catalytic converters also remove the nitrogen oxides to form nitrogen and oxygen, to purify exhaust gas. .
2 Note
unleaded petrol, to prevent the catalyst ldquo; poisoning rdquo ;. While it is itself toxic substances in the exhaust gas purifier, it is not vulnerable to the attack, lead and sulfur in gasoline and other catalytically active elements of substance crystals to form a new structure or catalytic species deposited on the top, thus destroying catalytic species surface activity of the catalytic converter can cause a very negative impact.
To select a suitable catalytic system, considering the vehicle, engine operating conditions, among other factors, that the respective functions have been integrated effectively play the role.
three-way catalytic converter, it is a device typically does not require regular maintenance, but if there are problems, check immediately, troubleshooting. When the car is recommended conservation or want to take a look and take preventive measures always hurt.