Description

three way catalyst systems (TWC)Is installed in the vehicle exhaust system, the most important outer purifier three way catalyst systems (TWC)is installed in the vehicle exhaust system, the most important outer purifier, which can be emitted by vehicle exhaust CO, HC and NOx and other harmful gases by oxidation and reduction reactions into harmless carbon dioxide, water and nitrogen. Because of this catalytic converter can simultaneously be the main types of emissions of harmful substances into harmless substances. With the increasingly stringent environmental requirements, more and more car exhaust catalytic converter is installed as well as the oxygen sensor device. It is installed in the engine exhaust pipe, through oxidation-reduction reaction, carbon dioxide and nitrogen, it is also known as ternary (efficiency) catalytic converter Three catalytic converter works is this: When high-temperature automotive exhaust gas through the purification device, TWC will increase in the cleaning agent CO, HC and NOx gases in three kinds of activity in the undertaking of a certain degree of oxidation - reduction reaction , which under high temperature oxidation of CO to become colorless, non-toxic carbon dioxide gas; HC compounds in the high temperature oxidation into water (H*0) and carbon dioxide; NOx reduction into nitrogen and oxygen. Three kinds of harmful gases into harmless gases, so that vehicle exhaust will be purified