A diesel particulate filter removes particulate matter from diesel exhaust by physical filtration. The common type is a ceramic (cordierite or silicon carbide) honeycomb substrate. The structure like an emissions catalyst substrate with the channels blocked at alternate ends. The exhaust gasses must therefore flow through the walls between the channels and the particulate matter is deposited on the walls.
Other filter types are available, using sintered metal plates, foamed metal structures, fibre mats and other materials as the filtration medium.
The filtration efficiencies of diesel particulate filters is more than 99% in solid matter. Since diesel particulate matter has a non-solid portion, the total efficiency for DPM is lower than 90%. The advantages are lower back pressure and a lower risk of blocking.
1. Carborundum wall flow filter:
Type
| Filter volume(Litre)
| Size ( Diameter × length )
| Shape
|
mm
Inches
A001
2.5
Φ 144×154
Φ 5.66×6
Rotundity
|
3.3
Φ 144×205
Φ 5.66×8
Rotundity
4.4
Φ 144×254
Φ 5.66×10
Rotundity
4.9
Φ 144×305
Φ 5.66×12
Rotundity
A002
2.5
Φ 144×154
Φ 5.66×6
Rotundity
|
3.3
Φ 144×205
Φ 5.66×8
Rotundity
4.4
Φ 144×254
Φ 5.66×10
Rotundity
4.9
Φ 144×305
Φ 5.66×12
Rotundity
A003
2.5
Φ 144×154
Φ 5.66×6
Rotundity
|
3.3
Φ 144×205
Φ 5.66×8
Rotundity
4.4
Φ 144×254
Φ 5.66×10
Rotundity
4.9
Φ 144×305
Φ 5.66×12
Rotundity
A004
2.6
(98×195)×154
(3.8×7.7)×6
Race track
|
3.5
(98×195)×205
(3.8×7.7)×8
Race track
4.3
(98×195)×254
(3.8×7.7)×10
Race track
5.2
(98×195)×305
(3.8×7.7)×12
Race track
2.Cordierite wall flow filter:
100Cpi (DPF)
| 200 Cpi (DPF )
|
Size (Inches )
Size (mm )
Size (Inches)
Size (mm )
Φ5.9×5.9
Φ150×150
Φ5.66×5.9
Φ144×150
Φ7.5×8
Φ190×205
Φ5.66×6
Φ144×152.4
Φ9.45×9.45
Φ240×240
Φ5.66×7
Φ144×177.8
Φ9.45×12
Φ240×305
Φ7.5×8
Φ190×205
Φ10.25×12
Φ260×305
Φ10.25×12
Φ260×305
Φ11.25×12
Φ286×305
Φ10.5×12
Φ267×305
Φ11.25×12.48
Φ286×317
Φ11.25×12
Φ286×305
Φ14.72 ×10.6×12.48
Φ374×270×317
Φ11.25×12.48
Φ286×317