Industry Solutions

                 This idea uses the flow resistance of a segmented diesel particulate filter.  Filter flow resistance is expected to remain below a certain limit as to minimize the adverse effect of exhaust flow blockage, due to the continuous particulate filtration and deposition build-up in the filter on the diesel engine.

                 Both Cordierite and Silicon Carbide filters perform the action of particulate filtration via passing the engine exhaust gas though their filtration walls typically a fraction of a millimeter thick.  Flow passage through the filtration walls generates a fair amount of resistance to the flow, which is a non-negligible component of the total filter pressure drop.

                 The difference between the magnitudes of the flow resistance of a monolithic vs. a segmented filter due to the flow through the filtration walls are that given two identical monolithic and segmented filters, the segmented filter holds lower filtration wall area, resulting in a higher flow resistance than the Cordierite filter does.

 

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Idea #2: Pressure Drop of Segmented Diesel Filter

A monolithic (Cordierite) filter left vs. a segmented

(Silicon Carbide) filter composed of 16 individual segments.

Cummins

Diesel Particulate Filter