Particulate matter filter assembly for, e.g. diesel engine of motor vehicle, has swirl element that is positioned in direction of flow of exhaust stream to direct portion of stream in opposite direction

摘要

The filter assembly (112) has a particulate matter (PM) filter (122) that comprises the entry face (134) facing the direction of flow of exhaust stream. A swirl element (124) comprises a blade positioned in the direction of flow of exhaust stream to direct a portion of stream in the opposite direction. An independent claim is included for method of filtering particulate matter.