公开(公告)号：US20210277815A1

公开(公告)日：2021-09-09

申请号：US16497438

申请日：2018-03-27

Applicant: CUMMINS INC.

Inventor： Lars Krister Henrichsen ,  Krishna P. Chliumukuru ,  Michael Haas ,  Mathew L. Anderson

IPC: F01N3/20 ,  F01N3/28 ,  F01N3/08 ,  F01N3/022 ,  B01D53/94

Abstract: An exhaust aftertreatment device includes a housing defining an inlet and an outlet. A plurality of first substrate layers are positioned within the housing in fluid receiving communication with the inlet. The plurality of first substrate layers define a first flow direction, and the plurality of first substrate layers comprise a passive NOx adsorber washcoat. A plurality of second substrate layers are positioned within the housing with the first and second substrate layers being layered in alternating order. The plurality of second substrate layers define a second flow direction perpendicular to the first flow direction, and the plurality of second substrate layers comprise a selective catalytic reduction washcoat. A connecting passage is in fluid receiving communication with the plurality of first substrate layers and in fluid providing communication with the plurality of second substrate layers.