公开(公告)号：US11761365B2

公开(公告)日：2023-09-19

申请号：US17642628

申请日：2020-09-11

Applicant: Cummins Inc.

Inventor： Z. Gerald Liu ,  Apoorv Kalyankar ,  Niklas Schmidt ,  Achuth Mannannur

IPC: F01N3/28 ,  F01N3/20

CPC classification number: F01N3/2892 ,  F01N3/2066 ,  F01N2240/20 ,  F01N2610/02 ,  F01N2610/1453

Abstract: Apparatus and method for mixing reductant in an exhaust gas flow using virtual interception. Embodiments include an exhaust gas and reductant mixer comprising a body, a first flow device, and a reductant entry port. The body defines an exhaust gas flow path having a central portion. The first flow device swirls the exhaust gas in a circumferential direction with respect to the gas flow path. The reductant entry port introduces the reductant into the gas flow path at a location downstream from the first flow device and in an introduction direction (1) offset from the central portion, and (2) opposite the circumferential direction.

公开(公告)号：US10060845B2

公开(公告)日：2018-08-28

申请号：US15462260

申请日：2017-03-17

Applicant: Cummins Inc.

Inventor： Aleksey Yezerets ,  Z. Gerald Liu ,  Krishna Kamasamudram ,  Neal W. Currier

IPC: B01D53/56 ,  G01N15/08 ,  B01D53/94 ,  B01D46/42 ,  B01D46/00 ,  B01J35/04 ,  B01J23/22 ,  G01L19/08 ,  F01N3/20 ,  F01N3/021 ,  F01N11/00

CPC classification number: G01N15/0826 ,  B01D46/0086 ,  B01D46/42 ,  B01D53/9418 ,  B01D53/9436 ,  B01D53/944 ,  B01D53/9445 ,  B01D53/9477 ,  B01D53/9495 ,  B01D2255/2022 ,  B01D2255/2027 ,  B01D2255/20723 ,  B01D2255/2092 ,  B01D2255/904 ,  B01D2258/012 ,  B01J23/22 ,  B01J35/04 ,  F01N3/021 ,  F01N3/035 ,  F01N3/106 ,  F01N3/2066 ,  F01N3/208 ,  F01N3/36 ,  F01N11/002 ,  F01N13/009 ,  F01N2250/02 ,  F01N2370/02 ,  F01N2560/08 ,  F01N2610/02 ,  F01N2900/1616 ,  G01L19/08 ,  G01N2015/084 ,  Y02T10/24 ,  Y02T10/47

Abstract: System and methods for reducing secondary emissions in an exhaust stream from an internal combustion engine are disclosed. The systems and methods include a filtration device positioned downstream from an SCR catalyst of an aftertreatment system disposed in the exhaust system. The filtration device can also be used for particulate filter diagnostics and for treatment of ammonia slip.

公开(公告)号：US20170191921A1

公开(公告)日：2017-07-06

申请号：US15462260

申请日：2017-03-17

Applicant: Cummins Inc.

Inventor： Aleksey Yezerets ,  Z. Gerald Liu ,  Krishna Kamasamudram ,  Neal W. Currier

IPC: G01N15/08 ,  B01D46/42 ,  B01D46/00 ,  F01N11/00 ,  B01J23/22 ,  G01L19/08 ,  F01N3/20 ,  F01N3/021 ,  B01D53/94 ,  B01J35/04

CPC classification number: G01N15/0826 ,  B01D46/0086 ,  B01D46/42 ,  B01D53/9418 ,  B01D53/9436 ,  B01D53/944 ,  B01D53/9445 ,  B01D53/9477 ,  B01D53/9495 ,  B01D2255/2022 ,  B01D2255/2027 ,  B01D2255/20723 ,  B01D2255/2092 ,  B01D2255/904 ,  B01D2258/012 ,  B01J23/22 ,  B01J35/04 ,  F01N3/021 ,  F01N3/035 ,  F01N3/106 ,  F01N3/2066 ,  F01N3/208 ,  F01N3/36 ,  F01N11/002 ,  F01N13/009 ,  F01N2250/02 ,  F01N2370/02 ,  F01N2560/08 ,  F01N2610/02 ,  F01N2900/1616 ,  G01L19/08 ,  G01N2015/084 ,  Y02T10/24 ,  Y02T10/47

Abstract: System and methods for reducing secondary emissions in an exhaust stream from an internal combustion engine are disclosed. The systems and methods include a filtration device positioned downstream from an SCR catalyst of an aftertreatment system disposed in the exhaust system. The filtration device can also be used for particulate filter diagnostics and for treatment of ammonia slip.