公开(公告)号：US11333054B2

公开(公告)日：2022-05-17

申请号：US16497438

申请日：2018-03-27

Applicant: CUMMINS INC.

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

IPC: F01N3/20 ,  B01D53/94 ,  F01N3/022 ,  F01N3/08 ,  F01N3/28 ,  F01N13/00

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.

公开(公告)号：US20220220878A1

公开(公告)日：2022-07-14

申请号：US17707312

申请日：2022-03-29

Applicant: CUMMINS INC.

Inventor： Lars Krister Henrichsen ,  Krishna P. Chilumukuru ,  Michael Haas ,  Matthew L. Anderson

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

Abstract: An exhaust aftertreatment system includes a cross-flow selective catalytic reduction catalyst. The cross-flow selective catalytic reduction catalyst includes a housing and a substrate assembly. The substrate assembly includes a plurality of first substrate layers defining a plurality of first flow channels and a plurality of second substrate layers defining a plurality of second flow channels. The exhaust aftertreatment system includes a passive NOx adsorber. The passive NOx adsorber includes a housing. The housing includes an inlet in exhaust gas receiving communication with the plurality of first flow channels of the cross-flow selective catalytic reduction catalyst. The housing includes an outlet in exhaust gas providing communication with the plurality of second flow channels of the cross-flow selective catalytic reduction catalyst. The passive NOx adsorber includes a substrate positioned in the housing. The substrate includes a passive NOx adsorber washcoat.

公开(公告)号：US11598239B2

公开(公告)日：2023-03-07

申请号：US17707312

申请日：2022-03-29

Applicant: CUMMINS INC.

Inventor： Lars Krister Henrichsen ,  Krishna P. Chilumukuru ,  Michael Haas ,  Matthew L. Anderson

IPC: F01N3/20 ,  B01D53/94 ,  F01N3/022 ,  F01N3/08 ,  F01N3/28 ,  F01N13/00

Abstract: An exhaust aftertreatment system includes a cross-flow selective catalytic reduction catalyst. The cross-flow selective catalytic reduction catalyst includes a housing and a substrate assembly. The substrate assembly includes a plurality of first substrate layers defining a plurality of first flow channels and a plurality of second substrate layers defining a plurality of second flow channels. The exhaust aftertreatment system includes a passive NOx adsorber. The passive NOx adsorber includes a housing. The housing includes an inlet in exhaust gas receiving communication with the plurality of first flow channels of the cross-flow selective catalytic reduction catalyst. The housing includes an outlet in exhaust gas providing communication with the plurality of second flow channels of the cross-flow selective catalytic reduction catalyst. The passive NOx adsorber includes a substrate positioned in the housing. The substrate includes a passive NOx adsorber washcoat.

公开(公告)号：US09677439B2

公开(公告)日：2017-06-13

申请号：US14600262

申请日：2015-01-20

Applicant: Cummins Inc.

Inventor： Aniket Gupta ,  Michael J. Cunningham ,  Michael J. Ruth ,  Krishna P. Chilumukuru

IPC: F01N3/035 ,  F01N3/08 ,  F01N3/20 ,  F01N9/00 ,  F01N13/00 ,  F01N3/10

CPC classification number: F01N3/035 ,  F01N3/0807 ,  F01N3/0835 ,  F01N3/0842 ,  F01N3/103 ,  F01N3/106 ,  F01N3/108 ,  F01N3/208 ,  F01N9/00 ,  F01N9/002 ,  F01N13/009 ,  F01N13/0093 ,  F01N13/0097 ,  F01N2340/02 ,  F01N2570/12 ,  F01N2570/14 ,  F01N2610/02 ,  F01N2610/06 ,  F01N2610/1406 ,  F01N2610/1453 ,  F01N2610/146 ,  F01N2900/1402 ,  F01N2900/1404 ,  F01N2900/1602 ,  Y02T10/24 ,  Y02T10/47

Abstract: Systems and methods are provided for managing low temperature NOx and HC emissions, such as during a cold start of an internal combustion engine. The systems and methods include storing NOx and HC emissions at low temperatures and passively releasing and treating these emissions as the temperature of the exhaust system increases.

公开(公告)号：US20150240682A1

公开(公告)日：2015-08-27

申请号：US14600262

申请日：2015-01-20

Applicant: Cummins Inc.

Inventor： Aniket Gupta ,  Michael J. Cunningham ,  Michael J. Ruth ,  Krishna P. Chilumukuru

IPC: F01N3/035 ,  F01N9/00 ,  F01N13/00

CPC classification number: F01N3/035 ,  F01N3/0807 ,  F01N3/0835 ,  F01N3/0842 ,  F01N3/103 ,  F01N3/106 ,  F01N3/108 ,  F01N3/208 ,  F01N9/00 ,  F01N9/002 ,  F01N13/009 ,  F01N13/0093 ,  F01N13/0097 ,  F01N2340/02 ,  F01N2570/12 ,  F01N2570/14 ,  F01N2610/02 ,  F01N2610/06 ,  F01N2610/1406 ,  F01N2610/1453 ,  F01N2610/146 ,  F01N2900/1402 ,  F01N2900/1404 ,  F01N2900/1602 ,  Y02T10/24 ,  Y02T10/47

Abstract: Systems and methods are provided for managing low temperature NOx and HC emissions, such as during a cold start of an internal combustion engine. The systems and methods include storing NOx and HC emissions at low temperatures and passively releasing and treating these emissions as the temperature of the exhaust system increases.

Abstract translation: 提供了用于管理低温NOx和HC排放的系统和方法，例如在内燃机的冷启动期间。 这些系统和方法包括在低温下储存NOx和HC排放物，并随着排气系统的温度升高而被动地释放和处理这些排放物。