Does the three-way catalysis need to be cleaned, and how to clean it best

For car threeYuanFor catalysis, if it is used for a long time without cleaning, it is easy to cause clogging. Once the three-way catalysis is blocked, it will not only fail to meet the emission reduction standards of automobile exhaust, but it may even cause a sharp increase in emissions of pollutants. At the same time, three-way catalysis is an important part of the engine's closed-loop control system. The blocked three-way catalysis can even affect the normal operating conditions of the entire engine.

How to clean the three-way catalysis

1, Bottle cleaning

The three-way catalyst is cleaned by slinging, which is currently the most mainstream cleaning method, and it is also a cleaning project strongly promoted by 4S shops and repair shops. This method does not need to disassemble the three-way catalyst and is easy to operate; the disadvantage is that the material cost is relatively expensive, and the cleaning effect is better than the former, but compared to the material cost, the cleaning effect is not ideal.

2, Additive cleaning

Additive cleaning is to add cleaning agent to the fuel tank. After the vehicle is started, the cleaning agent will enter the combustion chamber along with the gasoline to burn and finally be discharged in the exhaust pipe. Catalyze for cleaning. This method is affordable and easy to operate, but the effect is worrying.

3, Disassembly and cleaning

Disassembly and cleaning need to completely disassemble the three-way catalyst and soak and clean with oxalic acid. This method has the best cleaning effect, but the operation is troublesome, time-consuming and laborious, and many 4S shops and repair shops are unwilling to provide disassembly and washing services.

Three-way catalytic plugging phenomenon

1, Mild blockage:The specific manifestation of mild blockage is that the exhaust purification capacity of the vehicle is reduced, but we cannot be able to detect it without professional equipment.discoverStrange.

2, Moderate blockage:The specific manifestation of moderate blockage is that the vehicle's exhaust purification ability continues to decrease, while the engine's fuel consumption increases, power drops, etc., and the engine failure indicator light may also light up.

3, Serious blockage:When the three-way catalysis is severely blocked, in addition to the above symptoms, the high-temperature exhaust gas cannot be effectively discharged and continues to accumulate. The normal operation of the engine will be greatly affected, and even flameout will occur, and the exhaust pipe will be more serious. It may burn red due to high temperature, or even spontaneously ignite.