TWC, Three-Way Catalytic Converter
The three-way catalytic converter is the key component of automobile exhaust treatment system, which is mainly used to purify the harmful substances in gasoline engine exhaust. It converts carbon monoxide (CO), hydrocarbons (HC), and nitrogen oxides (NOx) to harmless carbon dioxide (CO2), water (H2O), and nitrogen (N2) through catalytic reactions.
Working principle
Catalytic reaction: The catalyst is coated with precious metal catalysts (such as platinum, palladium, rhodium), which can accelerate the chemical reaction, so that harmful gases are converted to harmless substances at lower temperatures.
• Oxidation reaction: Carbon monoxide (CO) and hydrocarbons (HC) react with oxygen (O2) under the action of a catalyst to form carbon dioxide (CO2) and water (H2O).
Reduction reaction: Nitrogen oxide (NOx) is reduced to nitrogen gas (N2) under the action of a catalyst.
Advantages of three-way catalytic converter
• Efficient purification: It can significantly reduce harmful substances in exhaust gas and meet strict emission standards.
• Optimized combustion: Through catalytic reactions, the combustion efficiency of the engine is improved and carbon accumulation is reduced.
• Improved fuel economy: Optimize combustion processes to reduce fuel consumption.
Application scenario
• Gasoline engine: widely used in passenger cars, light commercial vehicles and other gasoline engine vehicles.
• Hybrid vehicles: In hybrid vehicles, the three-way catalytic converter also plays an important role in ensuring that the exhaust gas is up to standard.
Diesel Particulate Filter (DPF)
Diesel particulate filter is an important part of diesel engine exhaust treatment system, which is mainly used to filter particulate matter (PM) in diesel exhaust and reduce solid particulate matter emissions in exhaust.
Working principle
• Physical filtration: Diesel particle filters are usually made of porous ceramic materials (such as cordierite, silicon carbide) to capture particulate matter in the exhaust gas by means of physical interception.
Regeneration technology: In order to maintain the performance of the filter, the DPF needs to be regenerated regularly. The regeneration process can be achieved by passive regeneration (taking advantage of the high temperature of the engine when running) or active regeneration (by means of external heating or post-injection of fuel, etc.)
Advantages of diesel particulate filter
• Efficient filtration: It can effectively filter particulate matter in diesel exhaust, and the filtration efficiency can reach 70% to 90%.
• Meet emission standards: Help diesel engines meet stringent emission standards, such as Euro VI, Country VI, etc.
Optimize combustion: Improve engine combustion efficiency and reduce fuel consumption by reducing particulate emissions.
Application scenario
• Commercial vehicles: widely used in trucks, buses and other commercial vehicles.
• Construction machinery: suitable for excavators, loaders and other construction machinery.
• Diesel generator set: used for exhaust gas treatment of diesel generator set
Why replace the three-way catalytic converter?
1. The performance deteriorates
Power attenuation: When the three-way catalytic converter is blocked or damaged, the engine's exhaust resistance increases, resulting in a decrease in power. If the vehicle has sustained power attenuation (a power drop of more than 15%), it may be that the three-way catalytic converter has failed.
Increased fuel consumption: Blockage of the three-way catalytic converter will affect the engine's combustion efficiency, resulting in increased fuel consumption.
Excessive exhaust emissions: If the performance of the three-way catalytic converter is reduced, the harmful substances in the exhaust gas can not be effectively converted, resulting in excessive exhaust emissions and cannot pass the annual inspection
2. Fault code alarm
Fault code P0420: When the vehicle's fault code shows P0420, it indicates that the efficiency of the three-way catalytic converter is lower than normal and may need to be replaced.
Oxygen sensor failure: The oxygen sensor is a key component to monitor the working status of the three-way catalytic converter. If the oxygen sensor fails, it may cause the efficiency of the three-way catalytic converter to decrease, or even damage.
3. Physical damage
Blockage: Long-term use of inferior fuel or frequent short-distance driving may lead to carbon accumulation or blockage inside the three-way catalytic converter.
Rupture: High temperature or mechanical impact may cause the carrier inside the three-way catalytic converter to rupture, affecting its normal work.
4. Toxic failure
Fuel quality problems: The use of inferior fuel containing more impurities such as sulfur and lead will lead to poisoning of the three-way catalytic converter and reduce its catalytic efficiency.
Lubricating oil problem: Phosphorus, zinc and other elements in lubricating oil can also lead to poisoning of the three-way catalytic converter
Engine failure: incomplete engine combustion, ignition system failure, etc., will cause the unburned mixture to enter the three-way catalyst, produce high temperature, and damage its internal structure
Installation Instructions
The installation position of the three-way catalytic converter
1. Installation position of the three-way catalytic converter
The three-way catalytic converter is usually installed in the middle or rear of the automobile exhaust system, near the engine. The specific location is as follows:
• The front end of the exhaust pipe: the three-way catalytic converter is generally installed between the exhaust manifold and the exhaust pipe, also known as the "exhaust head segment". This ensures that high-temperature exhaust gases can be processed quickly through the catalytic converter
• Between front and rear oxygen sensors: the three-way catalytic converter is located between the front and rear oxygen sensors, which is easy to monitor the exhaust gas treatment effect
• Middle of the exhaust pipe: In some models, the three-way catalytic converter is installed in the middle of the exhaust pipe
Diesel particulate filter (DPF) installation location
The diesel particulate filter is usually installed in the middle of the exhaust pipe, between the muffler and the engine. The specific location is as follows:
• Middle of the exhaust pipe: The DPF is generally installed in the middle of the exhaust pipe, near the silencer
Between the muffler and the engine: This installation position helps to effectively filter and remove particulate matter from the exhaust
• Tightly coupled arrangement: In some designs, the DPF is integrated with the three-way catalyst and installed near the exhaust manifold, which is called tightly coupled arrangement.
| Material |
Stainless Steel Metal |
| Name |
Catalytic Converter |
| Size |
can be customized |
| MOQ |
50 |
| Packing |
Bubble Bag + Strong Carton Box |
| Application |
Gasoline cars, diesel cars, |
| Warranty Service |
1years |
Dezhou Fujiya Auto Parts Technology Company, which focuses on automotive exhaust treatment system research and development, production, and sales of high-tech enterprises. Since its inception, the company has been committed to providing customers worldwide with high-quality automotive three-way catalytic converters, diesel particulate filters (DPF), tailpipes, and mufflers.
Core product
1. Automobile three-way catalytic converter
2. Diesel Particulate Filter (DPF)
3. Car mufflers
4. Exhaust manifold
5. Corrugated pipe
6. Exhaust pipe
7. Car exhaust tips
Enterprise advantage
• Technological innovation: The company has a professional R&D team, and constantly invests R & D resources to ensure the product technology is leading.
• Quality assurance: The company has passed the ISO 9001 quality management system certification to ensure that every product meets international standards
• Customized services: The company provides customized solutions that can adjust product specifications and performance according to customer needs
• Global layout: excellent quality and active after-sales service, the company's products are exported to many countries and regions around the world.
Payment item: TT, LC
Leading time: within 7workdays after receiving customer's deposit
Packing: wooden case
1 Who are we?
Our company is located in Shandong, China. Our products began to be sold to Canada, the United States, Australia and the Middle East in 2016
2 What can you buy here?
You can find the products you need according to your model. If you don't have them, you can contact us. We can produce according to the sample.
3 How can we guarantee the quality of our products?
Before production, we will purchase samples of the original vehicle for production to ensure consistent loading angle. Our raw materials for production are all standard Grade I 409 steel to ensure durability.
4 What if there is no product you want on the platform?
Our products have been updated, you can send us pictures.
5 What if the product is not applicable?
Don't worry about contacting us. We will solve all the problems for you.
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