Investigation of the Rearrangement of Reactive–Inert Particulate Structures in a Single Channel of a Wall-Flow Filter

Wall-flow filters are a standard component in exhaust gas aftertreatment and have become indispensable vehicles. Ash soot particles generated during engine combustion deposited diesel or gasoline particulate filters. During regeneration, the oxidized. The remaining ash can form different deposition patterns: homogenous layer plug-end filling. It has not yet been clarified whether filling is first formed by rearrangements of agglomerates before regeneration reactive particles. In this study, experiments carried out with single channel wall-flow filter. For investigations, inert formed. rearrangement achieved flowing through model filter observed high-speed camera. structures detach at inlet, transported along plug. velocity detached depends on their size, shape, track channel. If agglomerate near walls channel, deviates from core flow. higher velocity, larger agglomerates.