The ways to clean gasoline engine

2021 GRWA new hot-selling catalytic converter can remove gaseous pollutants and particulates. Meet the following characteristics:

1) Reduce emissions of harmful exhaust

The ceramic carrier contains precious metals which could clean the exhaust gas of automobile engines.

2) Remove particles

The catalytic converter is integrated and innovative conversion system can filter particles.

3) Follow the rules

The new GRWA catalytic converter can meet the Euro 6 standard.

With the increasing prosperity of many emerging markets, people have higher and higher expectations for personal travel. At the same time, the density of vehicles in global cities is gradually increasing. LMC Automotive estimated in 2017 that there are about 1 billion cars on the roads in the world, and this number may reach nearly 1.2 billion by 2018; Trend Force said that although the auto market has gradually weakened since 2018, plus due to the severe impact of the epidemic in 2020, the stocking kinetic energy of major module factories is obviously insufficient. However, the global auto market is recovering in 2021. It is estimated that the sales volume of complete vehicles will rebound from 77 million units in 2020 to 84 million units. So far, the global auto market is conservatively estimated to have a total volume of 1.4 billion. The most direct response to this phenomenon is that the automobile market is gradually becoming an important factor affecting the air quality of major cities in the world. Corresponding to this is that the propulsion concept related to electric vehicles-fully electric or as a hybrid vehicle-is gaining more and more attention. However, the consensus of industry experts is still more inclined to the argument that "in the medium term, the internal combustion engine will still be the dominant propulsion concept on the road". "Therefore, reducing the pollution of internal combustion engines is still an important global issue." The official emission standards of various countries and regions around the world are becoming more and more stringent. With these changes, to meet these standards, further optimization of the catalytic converter will be required. Therefore, the GRWA brand 2021 new three-way catalytic converter, which has been changed by technological innovation, has become a popular series of products in the world because of its powerful purification effect and strong quality that meets European standards.

(2021 new three-way catalytic converter is composed of ceramic carrier coated with precious metal)

Because the fuel (a mixture of hydrocarbons) burns incompletely, the engine produces emissions that are harmful to the environment. To prevent pollutants such as nitrogen oxides, carbon monoxide, unburned hydrocarbons, and particulates from entering the air, gasoline and diesel-powered vehicles are equipped with catalytic converters and, in some cases, particulate filter systems. They clean the exhaust gas before it leaves the exhaust system. In the past few years, these optimization measures have greatly reduced the overall environmental pollution of the automotive industry.

The well-known automotive three-way catalytic converter has been used in North America since 1976-in Europe since 1986. Automotive three-way catalytic converters can now remove more than 95% of unwanted substances from the exhaust gas stream. This is achieved through the internal structure of the three-way catalytic converter: the three-way catalytic converter is made of a special ceramic carrier, and the monolithic material contains many parallel channels.

Depending on its intended use, the channel walls have holes of different sizes. According to GRWA's carrier, it is divided into different specifications such as 200 mesh, 300 mesh, and 400 mesh. This ceramic carrier is covered with a coating that contains finely distributed precious metal particles (such as platinum, palladium and rhodium in a three-way catalyst). These materials are catalytically active, ensuring the conversion of carbon monoxide (CO), unburned hydrocarbons (HC) and nitrogen oxides (NOx) into water (H2O), nitrogen (N2) and carbon dioxide (CO2). As a catalytically active substance, precious metals can promote and participate in the reaction, but are not affected by it-this is the basic characteristic of a catalytic converter.

(Preparation of two-layer coated ternary carrier)

The European Commission adopted a new policy on clean air as early as 2016. The new Euro VI standard has come into effect. Now the universal standards for the use of ternary products around the world are basically based on Euro 4, Euro 5, and Euro 6. The main impact of Euro VI will be to reduce nitrogen oxide emissions from diesel vehicles and better control particulate emissions from direct-injection gasoline engines. Users of Euro VI cars will help improve air quality. Buyers of new cars will not notice this directly, but they will emit less emissions while driving. There is also a proposal to establish a unified EU voluntary "front-runner" benchmark for "super ultra-low emission vehicles" (the so-called SULEV), which member states can use to solve air pollution problems in hotspots.

GRWA researchers have further developed the three-way conversion catalyst and optimized its cleaning effect. The 2021 new three-way conversion catalyst uses a double-coated three-way catalyst preparation method to prepare wet gels, prepare catalyst powders, and contain platinum coatings. The coating step and the rhodium-containing coating coating step. The Pt/CeZr catalyst powder prepared by this technology has a high degree of chemical composition uniformity, high purity, ultrafineness, and can improve the dispersibility of Pt active components; at the same time, Pt and carrier cerium-zirconium composite oxide have strong carrier Interaction, forming PtO bond and PtOCe bond during high temperature aging process, greatly improving the stability of catalyst high temperature aging. In addition, the catalyst removes gaseous pollutants, as well as solid particles, from the exhaust gas stream. The porous monolithic wall also acts as a filter for particles. The particles are trapped by the wall and burned into carbon dioxide with the help of high temperature and catalytic coating. Because most of the particles are burned into CO2, the pores of the catalyst are not easily blocked-ensuring that the components remain functional.

Because it meets the Euro VI standard and has strong enough performance after testing and experimentation, the 2021 new three-way catalytic converter has been highly sought after and continues to sell well.

In addition, GRWA has launched more than 100 special car ternary products for different customer needs.

Standard performance is excellent, the purification effect is superior, the carrier is not easy to be blocked, and the service life of the ternary is prolonged. Various factors indicate that a good three-way catalytic converter itself has the function of self-cleaning. The best outcome for a three-way catalytic converter is self-optimization, and then naturally grow old to complete the final mission.

From the perspective of the value of the natural longevity of ternary use, GRWA is definitely a very reliable choice.