초록 ▼

A particulate matter (PM) filter assembly includes a PM filter that filters PM from an exhaust stream and that includes an entry face facing a first direction of flow of the exhaust stream, and a swirl element disposed in the exhaust stream and that includes a blade that directs a portion of the exh

A particulate matter (PM) filter assembly includes a PM filter that filters PM from an exhaust stream and that includes an entry face facing a first direction of flow of the exhaust stream, and a swirl element disposed in the exhaust stream and that includes a blade that directs a portion of the exhaust stream in a second direction of flow that is different than the first direction of flow. The blade directs the portion of the exhaust stream to distribute the exhaust stream over a frontal area of the entry face of the PM filter. A related method of filtering particulate matter from an exhaust stream is also provided.

대표청구항 ▼

What is claimed is: 1. A particulate matter (PM) filter assembly comprising:a PM filter that filters PM from an exhaust stream and that includes an entry face facing a first direction of flow of said exhaust stream; anda swirl element disposed in said exhaust stream and that includes a plurality of

What is claimed is: 1. A particulate matter (PM) filter assembly comprising:a PM filter that filters PM from an exhaust stream and that includes an entry face facing a first direction of flow of said exhaust stream; anda swirl element disposed in said exhaust stream and that includes a plurality of blades positioned at rotational angles about a first axis and that direct portions of said exhaust stream in second directions of flow that are different than said first direction of flow to distribute said exhaust stream over said entry face, wherein each of said blades includes an inner trailing edge that defines first departure angles and an outer trailing edge extending radially outward from said inner trailing edge that defines second departure angles, and wherein said first departure angles are greater than said second departure angles.