The vehicle three-way catalytic converter is mainly installed in the exhaust purification device of the exhaust system, which can effectively convert the carbon monoxide, hydrocarbons, nitrogen oxides and nitrogen oxides in the vehicle into harmless carbon dioxide, water and nitrogen, so as to effectively protect the environment. The three-way catalytic converter is generally composed of shell, shock absorber, carrier, catalyst coating, etc. The shell can generally be made of stainless steel plate. Generally, in order to ensure the reaction temperature of the catalyst and effectively reduce external heat radiation, the shell of many catalysts forms a double-layer structure. The function of damping pad is very obvious. Generally, it can fix the carrier and keep warm and sealed. Coating materials are usually some precious metals, such as platinum, palladium and other additional rare earth materials, which can improve oxidant activity and high temperature stability.

The original three-way catalytic converter is changed into a large flow three-way catalytic converter, which is a new three-way catalytic converter. The original carrier has more grids, which has a greater blocking effect on the air flow. After modification, the number of grids is less and the exhaust is smoother.

How should the three-way catalytic converter and muffler be refitted?

Muffler is generally called silencing drum, and its function is to dissipate exhaust pressure and reduce exhaust noise. Its basic principle is to discharge waste gas energy and balance air pressure. Because the exhaust gas has a certain pulsation, if directly discharged, it will produce strong noise, and high temperature will also harm the surrounding environment, so it is necessary to add an automobile muffler. The modification of automobile muffler equipment is generally to change the original muffler into the modified muffler. The mufflers used in factory transformation are generally made of linear sound-absorbing stainless steel, and some even use titanium alloy. Such mufflers have small current limit and high durability, but the silencing effect is limited.

The improvement of automobile muffler should not only improve the exhaust efficiency, but also effectively eliminate the noise. However, generally speaking, the exhaust efficiency is the main factor, and the silencing can also be given due consideration. During the transformation, the structure of automobile muffler should be selected according to the characteristics of engine.