Can three way catalysis be cleaned? How to wash?

Hello. OK. It needs to be taken out and washed with sulfuric acid. Hope it helps. [If you have a problem with the car, ask the car master.] 4S shop professional technician, 10 minutes to solve. 】

Hello, the three-way catalysis can be cleaned, but also needs to be cleaned, generally by using the way of hanging bottles to clean up by exhausting to achieve the effect, I hope mine will help you! [If you have a problem with the car, ask the car master.] 4S shop professional technician, 10 minutes to solve. 】

Hello. OK. The current three-way catalytic cleaning is all cleaned by hanging bottles! Specialized tools are needed! Hope mine can help you thank you! [If you have a problem with the car, ask the car master.] 4S shop professional technician, 10 minutes to solve. 】

Yes, it is best to remove it and soak it with oxalic acid to clean it I hope you can be satisfied and I wish you a happy life [If you have a problem with the car, ask the car master. 4S shop professional technician, 10 minutes to solve. 】

Sanyuan has a special cleaning liquid, which can be hung directly on the air intake system, similar to the operation of hanging bottles, and the cleaning can be completed. [If you have a problem with the car, ask the car master.] 4S shop professional technician, 10 minutes to solve. 】

Hello, yes, there is special equipment to clean the car [If you have a problem with the car, ask the car master. 4S shop professional technician, 10 minutes to solve. 】

You look good at your kilometers, generally it is cleaned by hanging bottles, it is best to run at high speed after cleaning, if it is blocked, it will be removed and cleaned with oxalic acid or toilet cleaner [If the car has a problem, ask the car master. 4S shop professional technician, 10 minutes to solve. 】

1. Add cleaning agent to the oil tank.

The biggest advantage of this method is that it is cheap and easy to operate, and only needs to add this type of cleaning agent directly to the oil tank, but the cleaning effect of this product on the three-way catalytic converter is really minimal; Because the product has been burned out after being burned in the combustion chamber and reaches the three-way catalytic converter, there is hardly any cleaning effect.

Second, hanging bottle cleaning.

Hanging bottle cleaning is also called non-dismantling cleaning, the biggest advantage of this cleaning three-way catalytic method is that there is no need to disassemble the three-way catalytic converter, the disadvantage is that the cost of purchasing cleaning equipment is expensive, and the cleaning effect is not good.

This kind of hanging bottle cleaning is through the inlet vacuum suction, the cleaning agent is sucked into the combustion chamber for combustion, and a high-temperature oxidation environment is established inside the three-way catalytic converter.

Then, through the redox reaction, the sulfur and phosphorus chemicals on the three-way catalytic converter and the unburned products of gasoline are converted into carbon dioxide, sulfur dioxide and other gases and discharged out of the exhaust pipe, so as to achieve the purpose of restoring the activity of rare metals on the three-way catalytic converter.

3. Dismantling and cleaning.

Dismantling and cleaning is a very laborious and laborious method, which requires the three-way catalytic converter to be completely disassembled from the vehicle, and then soaked in cleaning agents (oxalic acid, toilet cleaner) for a period of time, and then rinsed with clean water, so that the three-way catalytic converter cleaning method is the most effective.

Extended Materials. The working principle of the three-way catalytic converter.

Enhances gas activity.

The working principle of the three-way catalytic converter is: when the high-temperature automobile exhaust gas passes through the purification device, the purification agent in the three-way catalytic converter will enhance the activity of CO, HC and NOx, and promote it to carry out a certain oxidation-reduction chemical reaction.

Among them, CO is oxidized at high temperature to become colorless and non-toxic carbon dioxide gas; HC compounds are oxidized to water (H20) and carbon dioxide at high temperatures; NOx is reduced to nitrogen and oxygen. The three harmful gases become harmless gases, so that the exhaust gas of the car can be purified.

Catalytic spraying carriers.

A three-way catalytic reactor is similar to a muffler. Its outer part is made of a double layer of stainless steel sheet to make a barrel. In a double-layer sheet sandwich is fitted with thermal insulation asbestos fiber felt. The inside is filled with a purifying agent in the middle of a mesh partition. The purification agent consists of a carrier and a catalyst.

The carrier is generally made of aluminum oxide, and its shapes include spherical, polygonal and mesh partitions. The purifying agent actually acts as a catalyst and is also known as a catalyst. The catalyst is made of platinum, rhodium, and palladium. Spraying one of these on the carrier constitutes a purifying agent.

The three-way catalytic converter can be cleaned, with the growth of the car's use time, it will breed a lot of carbon deposits, including throttle carbon deposits, fuel injectors, and three-way catalytic converters will have carbon deposits, if not cleaned, it will cause some failures of the car, affecting the performance, and regular cleaning is to restore the performance of the car. It is recommended that you try Carbon King three-way catalytic deep cleaning agent, which is used to strongly remove carbon, sulfur, phosphorus, manganese, iron, and zinc compounds on the surface of the three-way catalytic converter, prevent clogging, dredge the microporous channels of the catalytic converter, restore the activity of the catalytic converter, and prolong the service life. Hope mine is helpful to you.

Can be washed.

Detection and judgment of the blockage method of the three-way catalytic system:

The three-way catalytic converter is affected by its own harsh working environment and its conversion performance characteristics, and there will be various faults in the process of use. For example, due to the blockage of the three-way catalytic converter, the engine power decreases, the flameout or the start is difficult, and the exhaust gas exceeds the standard, which is likely to interfere with our fault judgment.

1.Check whether the voltage of the front and rear oxygen sensors of the three-way catalytic converter is consistent. If it is consistent, it means that the three-way catalytic converter is damaged, that is, it is blocked or the three-way is burned because of the engine misfire.

2.Reach over to the exhaust pipe to see if you can feel the airflow, if you can't, it's blocked.

3.Take off the air filter. Step on the gas pedal on the spot. When I look at it, black smoke comes out of the air filter.

4.The temperature difference between the front and back of the thermosensitive three-way catalytic converter is used to determine whether it is blocked.

5.The maximum speed was not reached during the test drive, and the acceleration was poor.

Explain how to clean the three-way catalytic converter.

How to clean three-way catalysis? $3 (check transaction price |.)How to clean the catalytic? The three-way catalytic cleaning method is:

1. The effect of cleaning with oxalic acid solution is also obvious, but this method needs to disassemble the three-way catalytic device, and there are certain requirements for the exchange ratio and soaking time of Qingzhong Zhaooxalic acid solution, and the internal structure will be damaged if it is not used properly; 2. Dismantle-free cleaning, that is, by "hanging bottles" or adding cleaning agent to the fuel tank, it is suitable for three-way catalytic slight blockage. The specific method of cleaning the three-way catalysis by hanging the bottle: 1. Start the engine and extinguish the engine after the water temperature is normal; 2. The cleaning agent is poured into the special equipment, and the output joint of the equipment is connected with the air traffic pipe of Zhenyu Renting; 3. Start the engine, control the speed at 2000 rpm, open the flow control valve, and slowly drip the cleaning agent into the inlet tract for about 30 minutes; 4. After the cleaning is completed, keep the engine speed for 3 to 5 minutes to drain the residual liquid.

The method of three-way catalytic cleaning: 1. First, the vehicle is lifted by a car lift, and the three-way catalytic converter is completely disassembled; 2. Use oxalic acid solution (1:10 ratio with water) to soak and clean the three-way catalytic converter, and then clean the three-way catalytic converter with cold water; 3. Reload the cleaned three-way catalytic converter into the vehicle and run it for trial operation.

At this stage, the popular cleaning methods of three-way catalysis include additive cleaning and hanging bottle cleaning, whether it is additive cleaning or hanging bottle cleaning, the actual cleaning effect of the three-way catalytic converter is not very high. If you want to more fully clean the three-way catalytic converter, it is only disassembly and cleaning, but in view of the relative inconvenience of this method, time-consuming and laborious, it is impossible for the general automobile 4S shop and the repair department to give disassembly services.

Although the store does not give disassembly services, we can still DIY the actual operation by ourselves, and the actual operation process is as follows:

1. First of all, the car lift is used to lift the vehicle, and the three-way catalytic converter is completely disassembled.

2. Use oxalic acid solution (1:10 ratio of water to add water) to soak and clean the three-way catalytic converter, and then clean the three-way catalytic converter with cold water.

3. Reload the cleaned three-way catalytic converter into the vehicle and run it for trial operation.

Additive cleaning: additive cleaning is to add a special type of three-way catalytic cleaning agent to the fuel tank of gasoline and diesel vehicles, and when the vehicle is running, the cleaning agent will enter the engine combustion chamber together due to the vehicle gasoline, and finally be discharged according to the exhaust pipe and organic exhaust gas, and when it goes through the three-way catalytic converter, the cleaning liquid will carry out a certain cleaning effect.

Advantages of this method: high price, cost-effective, convenient practical operation; Defects: The actual effect of cleaning is very limited.

Hanging bottle cleaning: Hanging bottle is the core now, and it is also the cleaning method recommended by automobile 4S shops and maintenance shops. The method is connected to the vacuum solenoid valve of the automobile engine according to a plastic hose, and the air pressure in the hollow pipe is used to suck the cleaning agent in the hanging bottle into the automobile engine, and the three-way catalytic converter is cleaned when it is discharged with the exhaust pipe.

Advantages of this method: the convenience shirt contains good use and cleaning functions; Defects: The price is more expensive.

As one of the most important components in the exhaust gas purification equipment of fuel vehicles, the three-way catalytic converter is responsible for the catalytic reaction recovery of harmful substances such as carbon monoxide (CO), nitrogen oxides (HC) and nitrogen oxide NOx in the exhaust gas: the catalytic reaction of the three key harmful substances CO, HC and NOx is transformed into non-toxic and pollution-free water (H? o), carbon dioxide (CO

2）、n2（n

2) and o2 (o

2) Drain out.

In the long-term use of the three-way catalytic converter, there is no shortage of chemical substances such as carbon deposits in the organic exhaust gas of the vehicle to adhere to the porous structure porcelain medium, and in the long run, it may cause blockage.

Photo by Pacific Automobile Network Q&A).

Three-way catalysis is a method that can convert harmful substances such as carbon monoxide (CO), nitrogen oxides (HC) and nitrogen oxides (NOX) in vehicle exhaust into non-toxic and non-polluting water (H?) according to air oxidation and oxidationO), carbon dioxide (CO2), N2 (N2) and O2 (O2), which play a very important role in the exhaust gas purification equipment of fuel vehicles.

How to clean three-way catalysis.

When the three-way catalysis is applied for a long time, there is no shortage of carbon deposits and other chemicals that will adhere to the porous structure of the porcelain medium, and in the long run, it is possible that the three-way catalysis will be blocked. Once the three-way catalysis is blocked, we should clean it as soon as possible, otherwise with the change of time, it will not be just a simple cleaning can be handled.

At this stage, there are generally three kinds of cleaning for three-way catalysis: additive cleaning, hanging bottle cleaning and disassembly cleaning. But it is more popular, and at the same time, the car 4S shop and the repair department strongly recommend the method of hanging bottle cleaning.

Additive cleaning: Additive cleaning is the same as the application of fuel additives, according to the immediate filling of gasoline and diesel vehicle fuel tanks. The key competitive advantage of this method is that it is easy to use and cost-effective, but its actual cleaning effect is very limited.

Hanging bottle cleaning: This method is connected to the vacuum solenoid valve of the automobile engine according to a plastic hose, and relies on the air pressure in the hollow pipe to suck the cleaning agent in the hanging bottle into the automobile engine, and cleans the three-way catalytic converter when it is discharged with the exhaust pipe. Because it must be a special type of special tools, it is not recommended that car buyers clean it by themselves.

What is the use of washing three-way catalysis?

As far as the three cleaning methods mentioned above are concerned, the three-way catalytic method of water washing (i.e., disassembly cleaning) is the most effective, and at the same time, it is also the most complete cleaning method. However, because it must be completely dismantled three-way catalytic, time-consuming and laborious, many 4S shops and repair departments do not give water cleaning (disassembly) services.

First of all, the first step is to disassemble the negative cable of the battery, and it must be noted that the disassembly and assembly must be carried out after the ignition switch is turned to the K port and the negative cable of the battery is disassembled for 90s. The second step is to remove the front exhaust pipe, loosen the 2 bolts and remove the bracket. Remove the 2 fastening bolts and 2 fastening nuts from the front and middle exhaust pipes.

Then use a socket wrench to remove the 3 fastening nuts of the front exhaust pipe and the preheated three-way catalytic converter. Remove the front exhaust pipe and gasket. When it comes to the third step, it is time to disassemble the preheated catalytic converter, first check whether the preheated catalytic converter is cooled, then disassemble the auxiliary oxygen sensor connector, remove the bolts, nuts and exhaust manifold support.

Then remove the 3 bolts, 2 nuts, preheated catalytic converter, gasket, retainer and gasket. Remove 5 bolts and 2 heat shields from the preheated three-way catalytic converter. In the third step, the three-way catalytic converter was completely dismantled.

1. So how to reinstall the preheated three-way catalytic converter, which is our fourth step, first use 8 bolts to install 2 heat shields on the new preheated three-way catalytic converter. Then install the new gasket, retainer and gasket on the preheated catalytic converter, and then use 3 bolts and 2 new nuts to install the preheated catalytic converter with balancing (tightening torque, use the bolt and travel nut to install the exhaust manifold bracket (tighten the torque is, connect the auxiliary oxygen sensor connector.

2. The fifth step is to reinstall the front exhaust pipe. First, replace the left and right ends of the front exhaust pipe with 2 new gaskets. Then install 2 fastening bolts and 2 new fastening nuts on the front and middle exhaust pipes.

Use a socket wrench to tighten the front exhaust pipe and 1 new fastening nut of the preheated three-way catalytic converter (tightening torque is. Tighten 2 fastening bolts and 2 fastening nuts for the front exhaust pipe and middle exhaust pipe (tightening torque is: Use 2 bolts to install the bracket support.

3. Finally, connect the negative cable of the battery. At this point, the disassembly and assembly of the preheating three-way catalytic converter has been completed.