Exhaust system mixer with impactor

摘要

A mixer for a vehicle exhaust system includes an outer shell having an inlet end and an outlet end, an upstream baffle positioned adjacent the inlet end to initiate swirling of engine exhaust gases, and a downstream baffle positioned adjacent the outlet end. An impactor extends between the upstream and downstream baffles, and is spaced radially inwardly from an inner surface of the outer shell by a gap.

主权项

1. A mixer for a vehicle exhaust system comprising:
an outer shell having an inlet end and an outlet end; an upstream baffle positioned adjacent the inlet end to initiate swirling of engine exhaust gases, wherein that upstream baffle comprises a plate having a plurality of inlet openings with at least one inlet opening of the plurality of inlet openings being larger than the remaining inlet openings; a downstream baffle positioned adjacent the outlet end; and an impactor extending between the upstream and downstream baffles, the impactor being spaced radially inwardly from an inner surface of the outer shell by a gap, and the impactor being positioned adjacent to the at least one inlet opening that is larger than the remaining inlet openings, and wherein the impactor comprises a wall that has a first edge and a second edge opposite the first edge, and wherein one of the first and second edges is fixed to a respective one of the upstream and downstream baffles, and wherein the other of the first and second edges is free to move relative to the respective other of the upstream and downstream baffles to accommodate thermal expansion.