Catalytic Converter

Three way catalyst is the most important external purification device installed in automobile exhaust system. It is finally sintered by special coating process with metal or ceramic as carrier, self-made rare earth coupling oxide as auxiliary component and a small amount of precious metal. This product is not suitable for reduction.

The catalyst has made full use of the coordination effect of precious metals and rare-earth coupound oxide, under the influence of which the Carbon Oxide(CO), Hydrocarbon(HC) and Oxynitride(Nox) in the tail gas of autos is oxidized and deoxidized. In this way, the three pollutants are converted into Carbon Dioxide(CO2), H2O and Nitrogen which are harmless to the air.

After 100 hours of bench rapid aging test in the automobile engineering department of Tsinghua University, the fractional conversion rates of CO, HC and Nox are 96.3%, 94% and 90.5% respectively. The lowest initial ignition temperatures of the catalyst are 235℃, 272℃ and 230C℃ which have risen by 45℃, 53℃ and 40℃ respectively, compared with fresh catalysts after the aging reaction and the aging coefficient is 1.2 accordingly. After tested on autos, it proved to have met EuⅡEmission Standard.

With the enforcement of Eu Ⅲ Emission Standard and Eu Ⅳ Emission Standard in China, Company has optimized the ingredient and developed a series of new catalysts with lower intial ignition temperature, higher conversion efficiency and higher resistant index under sintering and then applied for the National Patent for invention. The adjustments of engines according to the CCC+UCC or UCC Program enable the ingredient of tail gas to meet Eu Ⅲ Emission Standard and EU Ⅳ Emission Standard. In 2006, the ingredient of the tail gas was inspected in the national quality inspection center of autos and the cotents of CO, HC and Nox were 1.0g/km, 0.6g/km and 0.08g/km respectively, which had met Eu Ⅲ Emission Standard.
Metallic Carrier size:

Ceramic Carrier size: