dpf FILTRATION
After the filter is installed and connected to the exhaust line, the main questions revolve around the backpressure, the filtration efficiency and the soot load. The filtration efficiency is given as a percentage of PM collection. The graph below shows the filtration rate over the entire range of particle sizes instead of particulate volume. Our filters' collection rate starts above 99%.
How did we get here? One of the most important variables is the wall-flow technology: the inlet and outlet channels are alternately closed. The inflowing exhaust gases need to stream through the ceramic channels in order to reach an outlet channel. All gaseous components are able to escape through the porous wall structure while all particles are held back.
Below, you can see how the wall-flow technology (closed filter) works and compare it to the non wall-flow (open filter) technology:
WALL-FLOW -video
- The filter channels are alternately closed
- Filtration efficiency of 99.9%
- Filtration rate measured by number of particles, not only by mass
NON-WALL FLOW
- Works like a catalytic converter
- The filter cannot be blocked
- Filtering efficiency of 40%-60%
