Three-way catalysts also face the risk of damage.The main causes of damage include high temperature, chronic poisoning, surface carbon, exhaust deterioration and oxygen sensor failure.

First of all, high temperature is one of the common causes of damage to three-way catalysts.When the exhaust temperature exceeds the limit temperature that the catalytic converter can withstand, the catalyst may sintering necrosis, resulting in catalytic converter failure.Therefore, it is necessary to control the causes of exhaust temperature rise to avoid high temperature caused by ignition time or fire break.

Secondly, chronic poisoning is also one of the important causes of damage to three-way catalysts.The catalyst is very sensitive to sulfur, lead, phosphorus, zinc and other elements, which come from the combustion products of gasoline and lubricating oil.They will form oxide particles inside the catalytic converter, adsorbed on the catalyst surface, affect the catalytic effect of the catalyst, make it lose effect, namely the so-called "poisoning" phenomenon.Therefore, it is necessary to avoid using inferior gasoline and oil containing these elements.

In addition, long-term low temperature work can also lead to damage to three-way catalysts. When the car is working at low temperature, the three-way catalyst can not start, the soot emitted by the engine will be attached to the catalyst surface, resulting in the catalyst can not contact with CO and HC, and then block the pores of the carrier, affecting the conversion efficiency.Therefore, it is necessary to avoid low speed and high gear driving and long time idle speed, in order to reduce the generation of carbon deposition.

In addition, the deterioration of exhaust will also cause damage to the three-way catalyst.If the concentration of exhaust pollutants emitted by the engine is too large, such as the mixture is too thick, it will affect the catalytic efficiency of the catalytic converter, and even cause the damage of the catalytic converter due to high temperature.Finally, the failure of the oxygen sensor will also affect the working efficiency of the three-way catalyst.The oxygen sensor is one of the key components in the feedback control system of the fuel injection device.If the oxygen sensor fails, it will lead to the air-fuel ratio is not accurate, and then affect the efficiency of the catalytic converter, reducing its service life.

For the problem of how to clean the three-way catalyst, there is a common method to use a hanging bottle for cleaning.This method is relatively convenient and fast, but after cleaning, it may cause the catalyst to be blocked, affecting its normal work.Therefore, in the usual use, the regular maintenance and maintenance of the three-way catalyst is very necessary, which can avoid excessive carbon deposition and blockage, and prolong the service life of the catalyst.

Automotive three-way catalyst plays a vital role in purifying automobile exhaust.By converting harmful gases such as CO, HC and NOx into harmless substances, it effectively reduces the harm of automobile exhaust to the environment and human health.However, the three-way catalyst is also faced with the risk of damage.Factors such as high temperature, chronic poisoning, surface carbon, exhaust deterioration and oxygen sensor failure may lead to catalyst failure.Therefore, we need to pay attention to controlling the exhaust temperature, avoid using inferior gasoline and oil, reduce low speed for a long time and idle speed.

When cleaning the three-way catalyst, using a bottle to clean is a common method, but it should be noted that after cleaning may lead to catalyst blockage, affecting its normal work.Therefore, regular maintenance and maintenance of the three-way catalyst is very necessary, can avoid excessive carbon and blockage problems, prolong the service life of the catalyst.

In a word, it is very important for car enthusiasts and car owners to understand the structure and function of the three-way catalyst, master the causes of damage and cleaning methods.Only by properly using and maintaining the three-way catalyst can we ensure the environmental performance and long service life of the car.I hope this article can bring you a comprehensive understanding and practical knowledge about the three-way catalyst.