Diesel Particulate Trap

Diesel particulate trap (DPF) is a filter installed in the exhaust system of diesel engines. It can capture black smoke particulate matter (PM) before it enters the atmosphere. Its filtration efficiency can reach more than 95%, with soluble organic components. Usually, the particulate matter is burned to eliminate the particulate matter in order to achieve regeneration.

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Application:

Diesel particulate trap (DPF) is widely used in the elimination of black smoke particles in the exhaust of off-road internal combustion engines such as diesel engine vehicles, diesel generator sets and various construction machinery.

Product Category of Diesel Particulate Trap:

According to the different materials of the catalyst substrate, DPF can be divided into the ceramic base (cordierite, silicon carbide and aluminum titanate) and metal base;
According to the gas circulation form, it can be divided into: wall-flow (WF-DPF), half flow (partial flow) (PF-DPF), and direct flow (FT-DPF).
DPF with or without precious metal coating and CPDF with precious metal coating.
The wall-flow particle trap has a high filtering effect, but the exhaust back pressure is relatively large; the semi-flow particle trap adopts a combination of filtration and straight-through design, with low back pressure, high filtering effect and long service life; Direct-flow particle traps are inexpensive and have very low back pressure, but the filtering effect is average.

Working Principle:

The working principle of the wall-flow particulate trap: By alternately blocking both ends of the pores of the honeycomb porous ceramic, the wall pores of the ceramic are used to filter and remove PM. When the trap has accumulated a certain amount of particulate matter, the system will perform a regeneration process to remove the trapped particulate matter.

diesel particulate filter
The working principle of the semi-flow type (partial flow type) particulate trap: through the multi-fold and non-blocking channel, it can capture most of the particulate matter (PM). Because the surface of the carrier is coated with a catalyst, the particulate matter collected in the pores ( PM) is oxidized to carbon dioxide (CO2), and it can also catalyze the oxidation of co and HC.

Product Parameter of Diesel Particulate Trap:

No. Section Shape Specification holes / square inch No. Section Shape Specification   holes / square inch
1 cylinder Ø143.8*152.4 200 12 cylinder Ø240*240 200
2 cylinder Ø143.8*254 200 13 cylinder Ø240*254 200
3 cylinder Ø170*203 200 14 cylinder Ø267*203 200
4 cylinder Ø170*254 200 15 cylinder Ø267*254 200
5 cylinder Ø170*305 200 16 cylinder Ø267*305 200
6 cylinder Ø190.5*152.4 200 17 cylinder Ø286*203 200
7 cylinder Ø190.5*203 200 18 cylinder Ø286*254 200
8 cylinder Ø190.5*254 200 19 cylinder Ø286*305 200
9 cylinder Ø190.5*305 200 20 cylinder Ø305*305 200
10 cylinder Ø240*152.4 200 21 cylinder Ø330*254 200
11 cylinder Ø240*203 200 22 cylinder Ø330*305 200