Industry Solutions

                 As far as filter flow resistance is concerned, a segmented design has two primary effects on the filter response: given a filter volume, segmentation reduces the net filtration wall area of the filter; it also slightly reduces the filter open frontal area.  Both effects cause an increase in the filter pressure drop.  At first, a reduction of 15% in the filtration wall area might appear negligible; however, a close scrutiny reveals that the consequence on the filter pressure drop is certainly non-negligible.  This substantial drop can be seen in figure below.

                 Segmented and monolithic filters differ in their flow resistance, commonly known as pressure drop.  In this work, an existing, validated pressure drop model for monolithic filter has been customized for a segmented filter.  Model predictions have been compared to experimentally-collected data, demonstrating the model accuracy.

 

 

 

 

 

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Idea #2: Pressure Drop of Segmented Diesel Filter

Pressure drop of a segmented filter (dashed line) vs. a monolithic filter.

Cummins

Diesel Particulate Filter