Read the three-way catalytic converter ineffective cause, hand to teach you to maintain the three-way catalytic converter

Release Time:

2023-10-27

Read the three-way catalytic converter ineffective cause, hand to teach you to maintain the three-way catalytic converter

Blocked three-way catalytic converter is a very troublesome problem for many car buyers, and it is especially in anxiety every year. The three-way catalytic converter is the most important in-vehicle purification equipment assembled in the automobile exhaust system software, which can change the harmful substances such as CO, HC, and NOx from the tailpipe emissions into non-toxic carbon dioxide, water, and N2 according to air oxidation and oxidation.Today, we will talk about the reason why the three-way catalytic converter is ineffective, and we will also tell you how to maintain the three-way catalytic converter of your car.

Reasons for ineffective three-way catalytic converter

1 Excessive temperature

At room temperature, the three-way catalytic converter does not have the ability to work in catalytic reaction, and its metal catalyst must be heated to a certain temperature before it has the ability to work in air oxidation or restoration. Usually, the flash ignition temperature of the catalytic reaction converter is 250-350℃, and the normal operating temperature is generally 400-800℃. Catalytic reaction converter in the work of the time will cause a lot of since the higher the amount of air oxidation temperature is also higher, when the temperature exceeds 1,000 ° C, which plating of the metal catalyst will be calcined and atrophied, at the same time it is also easy to produce the vehicle spontaneous combustion safety accidents. Therefore, we must pay attention to manipulate the various factors that cause the temperature of the exhaust pipe to rise, such as ignition time is too late or ignition sequence disorder, fire break, etc., which will make the unignited mixture of gases into the catalytic reactor, resulting in the exhaust pipe temperature is too high, and jeopardize the efficiency of the catalytic reaction converter.

Chronic poisoning

Metal catalyst to sulfur, lead, phosphorus, zinc and other elements are very sensitive, sulfur and lead from the car gasoline, phosphorus and zinc from the lubricating grease, these four components and their ignition in the automobile engine produces metal oxides particles are easy to be adhered to the catalytic surface, so that the metal catalyst can not be touched with the organic exhaust, and then lose the catalytic reaction, that is, the so-called "poisoned! This is the so-called "poisoned" condition.

2.Area carbon

Carbon deposits on the surface of three-way catalytic converter

When the vehicle is running in ultra-low temperature for a long time, the three-way catalytic converter can't start, and the carbon smoke from the car engine will stick to the surface of the catalytic converter, which can't touch with CO and HC, and will block the porosity of the medium for a long time, thus jeopardizing its conversion efficiency.

Exhaust Pipe Degradation

The catalytic converter is capable of converting pollutants to a certain extent, so it is important to minimize the initial exhaust pipe according to the in-house purification technology. If the concentration value and total output of each component of organic exhaust pollutants are too large, such as a thick gas mixture, the catalytic reaction generating capacity of the catalytic converter will be jeopardized and its conversion efficiency will be reduced. In addition, because the organic waste gas has a large amount of HC and CO into the catalytic reactor, will be caused by too much redox reaction, oxidation reaction caused by a large amount of heat will make the catalytic reactor temperature too high and destroyed.

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