DPF Honeycomb Ceramic for Exhaust System

Product Description

Cordierite Diesel Particulate Filter is mainly used in the diesel engine tail gas purifying system to solve the air pollution problem. It is a device designed to remove diesel particulate matter or soot from the exhaust gas of a diesel engine. Wall-flow diesel particulate filters usually remove 85% or more of the soot, and under certain conditions can attain soot removal efficiencies approaching 100%. Some filters are single-use, intended for disposal and replacement once full of accumulated ash. Others are designed to burn off the accumulated particulate either passively through the use of a catalyst or by active means such as a fuel burner which heats the filter to soot combustion temperatures.

This is accomplished by engine programming to run (when the filter is full) in a manner that elevates exhaust temperature or produces high amounts of NOx to oxidize the accumulated ash, or through other methods. This is known as "filter regeneration". Cleaning is also required as part of periodic maintenance, and it must be done carefully to avoid damaging the filter. Failure of fuel injectors or turbochargers resulting in contamination of the filter with raw diesel or engine oil can also necessitate cleaning. The regeneration process occurs at road speeds higher than can generally be attained on city streets; Vehicles driven exclusively at low speeds in urban traffic can require periodic trips at higher speeds to clean out the DPF. If the driver ignores the warning light and waits too long to operate the vehicle above 40 miles per hour (64 km/h), the DPF may not regenerate properly, and continued operation past that point may spoil the DPF completely so it must be replaced. Some newer diesel engines, namely those installed in combination vehicles, can also perform what is called a Parked Regeneration, where the engine increases RPM to around 1400 while parked, to increase the temperature of the exhaust.

Specifications:
*High Porosity
*High refractory
*High soot removal (can be up to 95%)
*Longevity service
*Experienced in vehicle exhaust catalyst
*Low thermal expansion
*High filter specific surface area
*Low pressure drop
*Long-term durability performance
*High soot removal: >95%

Shape Hole density (hole/in2) Size (mm) Size (inch)
Round 100/200 CPSI Φ127×152.4 5×6
Round 100/200 CPSI Φ144×150 5.66×5.9
Round 100/200 CPSI Φ144×152.4 5.66×6
Round 100/200 CPSI Φ144×254 5.66×10
Round 100/200 CPSI Φ150×150 5.9×5.9
Round 100/200 CPSI Φ190×200 7.48×7.87
Round 100/200 CPSI Φ190×203 7.48×8
Round 100/200 CPSI Φ190×305 7.48×12
Round 100/200 CPSI Φ228×305 8.97×12
Round 100/200 CPSI Φ240×76.2 9.45×3
Round 100/200 CPSI Φ240×100 9.45×3.94
Round 100/200 CPSI Φ240×240 9.45×9.45
Round 100/200 CPSI Φ240×305 9.45×12
Round 100/200 CPSI Φ260×305 10.23×12
Round 100/200 CPSI Φ267×305 10.50×12
Round 100/200 CPSI Φ286×100 11.26×3.94
Round 100/200 CPSI Φ286×267 11.26×10.50
Round 100/200 CPSI Φ286×305 11.26×12
Round 100/200 CPSI Φ286×355 11.26×13.97
Round 100/200 CPSI Φ286×381 11.26×15
Round 100/200 CPSI Φ305×330 12×13
Race track 100 CPSI Φ188×103×145 7.4×4.05×5.7
Assemble track 100 CPSI Φ374×270×317 14.72×10.62×12.48

Item Technical index
Chemical Composition SiO2 50.9±1%
AL2O3 35.2±1%
MgO 13.9±1%
Physical Properties Compression Strength in normal temperature ≥10Mpa
Thermal expansion coefficient ≤1.2×10-6 /Degree C
Wall thickness of hole density of 100 hole/ in2 0.42-0.50mm
Wall thickness of hole density of 200 hole/ in2 0.32-0.40mm
Apparent porosity ≥50%
Average hole diameter 10-15 micron
Highest Working Temperature 1400Degree C
Soot-filtration efficiency ≥95%

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