Why replace the diesel particulate filter?
When the engine of a diesel car is running, the exhaust gas from combustion passes through the DPF filter, where tiny particles are trapped and larger gas molecules are emitted. Suppose the engine is running poorly, such as through incomplete combustion. In that case, a large amount of carbon will be deposited in the DPF filter and block the intake and exhaust holes, thereby reducing the filtration efficiency and affecting the engine performance. Eventually, the DPF filter needs to be replaced.
Diesel Particulate filter (DPF) is a device installed in the exhaust system of diesel vehicles to reduce particulate matter (PM) in the exhaust by filtering. DPF captures particles through a mixture of surface and internal filtration devices, such as diffusion precipitation, inertial precipitation or linear interception, which can effectively purify 70% to 90% of the particles in the exhaust, and is one of the most effective and direct methods for purifying diesel particulate matter, which has been commercialized internationally. In order to meet the emission regulations of Euro VI or the United States 2010, the diesel exhaust post-treatment system will be more complex, and it is necessary to integrate the diesel oxidation catalytic catalytic converter (DOC), diesel particle filter (DPF), selective catalytic reduction device (SCR) and so on to control diesel emissions.
| Name: |
Diesel Particulate Filter DPF |
| Body Material: |
409L /304 stainless steel |
| Substate: |
honeycombed ceramic or metal |
| Emission: |
Euro2,3,4,5,6 or EPA or CARB(Cpsi up to customers) |
| Advantage: |
Durable, high cleaning rate |
| Service: |
Logo and packing is customized |
| Delivery period |
Within 10 workdays after receiving payment |
| Company nature |
Professional manufacturer |
Diesel particulate filter (DPF) structure
1. Shell:
Material: usually made of stainless steel, with good high temperature and corrosion resistance.
Function: Protect internal components from external mechanical damage and environmental impacts.
2. Honeycomb ceramic carrier:
Material: Common carrier materials include Cordierite, Silicon Carbide and Aluminum Titanate.
Structure: The carrier is designed as a honeycomb structure, the channel is open at one end and blocked at the other end, forming a checkerboard surface design.
Function: When the exhaust gas passes through the porous wall, the particles are trapped on the wall surface, so as to achieve filtration.
3. Catalytic coating:
Material: usually contains precious metals (such as platinum Pt, palladium Pd, rhodium Rh) and some auxiliary materials (such as aluminum oxide, cerium dioxide).
Function: The catalytic coating can reduce the ignition temperature of particles, promote the oxidation combustion of particles, and improve the regeneration efficiency.
4. Blocking end:
Function: one end of the entrance channel is open, and the other end is blocked, forcing the exhaust gas through the porous wall to achieve the filtration of particles
DPF INTRODUCTION
DPF is the only option to satisfy particle number emissions. Common DPF support materials are ceramics, aluminum titanate and silicon carbide. The choice of carrier material is mainly based on the use of DPF and regeneration strategy, including carbon back pressure, filtration efficiency, regeneration temperature, time and so on. All three carriers are now on the market. Our DPF coating technologies are based on a high thermal stable wash coat formulation with excellent NO2 formation.
DOC INTRODUCTION
DOC is one of the most important catalysts for diesel engine reprocessing. Its main function is to oxidize the unburned hydrocarbons (HC) in the engine and the carbon monoxide (CO) produced during combustion into harmless water and carbon dioxide. At the same time, it can also convert NO into NO2 for passive regeneration of downstream catalyst particle trap (CDPF) and improve NOx conversion efficiency of SCR. Depending on the emission requirements, it is sometimes necessary to integrate multiple functions on DOC, which also brings great challenges to the design of DOC. We can provide the following conventional DOC products, but also according to the customer's engine emissions input to provide customized DOC products.
Installation Instructions
Diesel Particulate Filter (DPF) installation position
1. Diesel vehicle installation position DPF is usually installed in the rear of the exhaust system, behind the turbocharger or under the chassis.
High temperature regeneration requirements: DPF needs to be periodically regenerated at high temperature (active or passive), away from the engine to avoid thermal shock, but need to retain sufficient temperature (above 250°C).
Spatial layout: The DPF of heavy diesel vehicles (such as trucks) is often integrated in the chassis exhaust road, while light vehicles (such as passenger cars) may be arranged near the engine compartment.
2. Integrated design Installation
DPF+SCR integration: Some models combine DPF and SCR catalytic converters into one module (such as Ford EcoBlue diesel engine) to reduce pipeline length.
Urea injection system linkage: A urea nozzle installation position should be reserved near the DPF for NOx reduction in the SCR system.
3. Installation of hybrid models for special models:
Diesel hybrid vehicles: (such as Audi SQ7 TDI) may integrate DPF in the exhaust path of electric mode and fuel mode switching, and temperature management under both conditions must be taken into account.
New energy transition technology:
plug-in hybrid diesel vehicles do not work in pure electric mode DPF, but still need to rely on the original installation position to complete regeneration when starting the engine
Diesel particle filter application field
1. Commercial vehicles: Diesel particle filters (DPF) are widely used in the field of commercial vehicles, including trucks, buses and so on. These vehicles usually use diesel engines and emit large amounts of particulate matter (PM) in the exhaust, which can be effectively reduced by DPF.
In the field of heavy diesel vehicles, the demand for DPF continues to grow, especially in the logistics and transport industry, where heavy diesel vehicles are used heavily and the demand for DPF is relatively high.
2.Construction machinery: DPF is also widely used in the field of construction machinery (such as excavators, loaders, etc.). These devices generate large amounts of particulate matter during construction, and DPF can effectively reduce the emission of these pollutants.
3. Agricultural machinery: such as tractors, harvesters, etc., the application of DPF can significantly reduce the particulate matter emissions of these equipment. 4. Generator sets: In the industrial field, the exhaust gas treatment of diesel generator sets is also inseparable from DPF. DPF provides these equipment with an effective exhaust gas treatment solution, so that it can meet the production needs, but also meet the environmental standards.
5. Ships: In the exhaust treatment of diesel engines on ships, DPF also plays an important role in reducing particulate emissions in the exhaust
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
8. Exhaust pipe gasket
9. Exhaust Flanges
10. Catalytic converter end cover
Payment term: TT, LC or Made in China Platform
Mini order: 5pcs
Leading time: Within 5weekdays after receiving full payment.
Packing: wooden case
Audited Supplier 
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