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.



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