![[Hot Item] Silicon Carbide DPF Diesel Particulate Filter with High Soot Burn off Efficiency](http://image.made-in-china.com/2f0j00GMgvjyisEYbI/Silicon-Carbide-DPF-Diesel-Particulate-Filter-with-High-Soot-Burn-off-Efficiency.webp)
Product Details
Basic Info.
Model NO.
BS-SC
Engine Type
Bestn
Type
Exhaust Pipe
Body Material
Steel
Discharge Standard
Euro IV
Certification
ISO9001
Noise Source
The Noise of Engine
The Noise of Engine
Aerodynamic Noise
Automobile Chassis Noise
Transmission Noise
Component
Exhaust Tail Pipe
Main Market
Europe
Munber of Channels
100, 200, 300, 400, 500, 600 Cpsi
Usage
Automobile Exhaust System
Size
Customized
Shape
Cuboid, Square, Roundness
Transport Package
Carton Box with Pallet, Wooden Box
Specification
150*150*300/150*150*100/100*100*100
Trademark
BSETN
Origin
Pingxiang Jiangxi
HS Code
6909190000
Production Capacity
500 Cubic Meter/Cubic Meters Per Month
Product Description
Silicon Carbide DPF Diesel Particulate Filter with High Soot Burn Off Efficiency
1. What is a DPF and What Does It Do?
To understand Silicon Carbide, one must first understand the purpose of a DPF.
Function: A DPF acts like a "sieve" or "maze" installed in the exhaust line. Its walls are covered with microscopic pores (approximately 10-20μm). Exhaust gases can pass through, but larger particulate matter (PM2.5 and above) is trapped within the channels, significantly reducing PM emissions to comply with increasingly stringent environmental regulations (such as China VI, Euro VI, etc.).
Regeneration: The trapped particles accumulate over time, causing exhaust backpressure to increase, which affects engine performance and fuel economy. Therefore, these particles need to be periodically burned off in a process called "regeneration." Regeneration involves raising the temperature inside the DPF (typically to above 550°C) to oxidize and burn the soot into carbon dioxide (CO2), which is then expelled.
2. Why Choose Silicon Carbide (SiC) Material?
The main substrate materials for DPFs are Cordierite and Silicon Carbide (SiC). Silicon Carbide has become the preferred material for high-performance DPFs due to its exceptional physical and chemical properties.
Below is a comparison between Silicon Carbide and Cordierite:
| Property | Silicon Carbide (SiC) | Cordierite | Advantage of SiC |
| High-Temperature Resistance | Extremely High (can operate continuously above 1200°C, melting point ~2700°C) | Moderate (max. service temp. ~1200°C, lower melting point) | Prevents melting or damage during active regeneration or fault conditions, offering higher reliability. |
| Thermal Conductivity | Good | Poor | Facilitates rapid and even heat distribution within the substrate, preventing localized hot spots and cracks, and aids regeneration efficiency. |
| Thermal Expansion Coefficient | Low | Low | Both have low coefficients, but SiC's modulus of elasticity is higher, which is a key consideration (see Pros/Cons below). |
| Mechanical Strength | Very High | Moderate | More resistant to impact and vibration, leading to a longer service life. |
3. The Unique Structure of SiC DPFs
To address the challenges posed by its high thermal conductivity and high modulus of elasticity (brittleness), SiC DPFs typically employ an ingenious design-a segmented bonded structure.
Structure: The entire DPF substrate is divided into multiple small blocks (e.g., a 4x4 matrix). Each block is an independent SiC unit. These units are then assembled into a monolithic body using a special bonding agent, and finally wrapped in a retention mat and housed inside a metal canister.
Why this design?
Manages Thermal Stress: Although SiC has good thermal conductivity and low expansion, its high modulus of elasticity makes it brittle. During regeneration, significant thermal stress could crack a monolithic SiC substrate. Dividing it into small segments allows each unit to expand and contract independently. The gaps between blocks absorb and (offset/neutralize) the thermal stress, preventing catastrophic cracking.
Improves Manufacturing Yield: The process of manufacturing large monolithic SiC parts is far more difficult and has a higher breakage rate than producing smaller units.
4. Advantages and Disadvantages of SiC DPF
Advantages:
Exceptional High-Temperature Resistance: Ideal for high-load diesel engines (e.g., heavy-duty trucks, construction machinery) and applications requiring frequent regeneration. Offers superior safety.
High Filtration Efficiency: Typically achieves 95% or even 99% efficiency, making it key for meeting ultra-low emission standards.
Long Service Life: Its high strength and corrosion resistance generally result in a longer lifespan than cordierite DPFs.
Good Thermal Conductivity: Aids in initiating regeneration and ensuring uniform temperature distribution.
Disadvantages:
High Cost: The raw material cost and manufacturing process for SiC are significantly higher than for cordierite, making SiC DPFs more expensive.
Higher Weight: Silicon Carbide has a higher density than cordierite, resulting in a heavier DPF for the same volume, which is a disadvantage for vehicle weight reduction.
Requires Segmented Design: The structure is relatively complex, involving more manufacturing steps.
Package
Working Principle
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