公开(公告)号：WO2016018886A1

公开(公告)日：2016-02-04

申请号：PCT/US2015/042413

申请日：2015-07-28

Applicant: CUMMINS, INC.

Inventor： SMITH, Michael, A. ,  LUO, Jinyong ,  JOSHI, Saurabh, Yashwant ,  KUMAR, Ashok ,  KAMASAMUDRAM, Krishna ,  CURRIER, Neal, W. ,  YEZERETS, Aleksey

IPC: F01N9/00

CPC classification number: F01N3/208 ,  F01N3/035 ,  F01N11/00 ,  F01N13/009 ,  F01N2550/02 ,  F01N2550/05 ,  F01N2560/021 ,  F01N2560/026 ,  Y02T10/24 ,  Y02T10/47

Abstract: A method includes providing a dosing command to adjust a dosing amount for an exhaust aftertreatment system; receiving selective catalytic reduction (SCR) inlet nitrous oxide (NOx) data and ammonia oxidation (AMOx) outlet NOx data; determining an ammonia-to-NOx ratio (ANR) value based on the SCR inlet NOx data and the dosing command; determining a NOx conversion fraction value based on the SCR inlet NOx data and the AMOx outlet NOx data; and determining a state of an in-use SCR and AMOx system of the exhaust aftertreatment system based on the ANR values and the NOx conversion fraction values for a plurality of dosing commands. Each dosing command corresponds with a distinct ANR value.

Abstract translation: 一种方法包括提供剂量指令以调节排气后处理系统的给药量; 接收选择性催化还原（SCR）入口一氧化二氮（NOx）数据和氨氧化（AMOx）出口NOx数据; 基于所述SCR入口NOx数据和所述配量命令来确定氨与NOx之比（ANR）值; 基于SCR入口NOx数据和AMOx出口NOx数据确定NOx转化分数值; 以及基于多个计量命令的ANR值和NOx转化分数值来确定排气后处理系统的使用中SCR和AMOx系统的状态。 每个剂量指令对应于不同的ANR值。

公开(公告)号：WO2017117103A1

公开(公告)日：2017-07-06

申请号：PCT/US2016/068672

申请日：2016-12-27

Applicant: CUMMINS INC.

Inventor： LUO, Jinyong ,  KUMAR, Ashok ,  KAMASAMUDRAM, Krishna ,  CURRIER, Neal W. ,  YEZERETS, Aleksey ,  TANG, Yadan ,  CUNNINGHAM, Michael J. ,  WANG, Di

IPC: F01N3/10 ,  F01N3/08 ,  F01N3/20 ,  F01N11/00 ,  B01J23/70 ,  B01J23/72

CPC classification number: B01J23/70 ,  B01J23/72 ,  F01N3/2006 ,  F01N3/2066 ,  F01N3/208 ,  F01N11/00 ,  F01N2260/04 ,  F01N2370/04 ,  F01N2550/02 ,  F01N2610/02 ,  Y02A50/2325 ,  Y02T10/24 ,  Y02T10/26 ,  Y02T10/47

Abstract: A method of recovering selective catalytic reduction catalysts relates to metal-Zeolite based catalysts. A selective catalytic reduction catalyst service event where a metal-Zeolite based selective catalytic reduction catalyst of an exhaust aftertreatment system may perform below a threshold level of performance is determined. The selective catalytic reduction catalyst then exposed to a recovery fluid selected to facilitate movement of metal ions.

Abstract translation: 回收选择性催化还原催化剂的方法涉及金属 - 沸石基催化剂。 确定排气后处理系统的基于金属沸石的选择性催化还原催化剂可以在阈值水平以下执行的选择性催化还原催化剂服务事件。 然后将选择性催化还原催化剂暴露于选择用于促进金属离子移动的回收流体。

公开(公告)号：WO2016011366A1

公开(公告)日：2016-01-21

申请号：PCT/US2015/040926

申请日：2015-07-17

Applicant: CUMMINS INC.

Inventor： KUMAR, Ashok ,  KAMASAMUDRAM, Krishna ,  LUO, Jinyong

IPC: B01D53/94 ,  B01J37/02 ,  F01N3/28

CPC classification number: B01D53/9418 ,  B01D53/9477 ,  B01D2251/2062 ,  B01D2251/2067 ,  B01D2255/20723 ,  B01D2255/20738 ,  B01D2255/20761 ,  B01D2255/50 ,  B01D2255/9032 ,  B01D2255/904 ,  B01D2255/911 ,  B01D2255/9155 ,  B01D2257/404 ,  B01D2258/012 ,  B01J29/072 ,  B01J29/80 ,  B01J35/0006 ,  B01J37/0244 ,  B01J37/0246 ,  F01N3/035 ,  F01N3/103 ,  F01N3/106 ,  F01N3/2066 ,  F01N3/28 ,  F01N13/0093 ,  F01N13/0097 ,  F01N2510/063 ,  F01N2510/0682 ,  F01N2570/18 ,  Y02T10/24

Abstract: The present application relates generally to selective catalytic reduction (SCR) exhaust aftertreatment apparatuses, systems and methods. SCR exhaust aftertreatment is an important technology for reducing emissions of oxides of Nitrogen (NOx) from internal combustion engines. Providing effective NOx reduction during a variety of operating conditions including, for example, steady state conditions, transient conditions, low temperature conditions, high temperature conditions, low load conditions, high load conditions and other conditions remains a significant challenge. There is a substantial need for the unique apparatuses, systems and methods disclosed herein.

Abstract translation: 本申请一般涉及选择性催化还原（SCR）废气后处理装置，系统和方法。 SCR废气后处理是减少内燃机氮氧化物（NOx）排放的重要技术。 在包括例如稳态条件，瞬态条件，低温条件，高温条件，低负载条件，高负载条件和其他条件的各种操作条件下提供有效的NOx还原仍然是重大挑战。 对本文公开的独特的装置，系统和方法是非常需要的。

公开(公告)号：WO2014126920A1

公开(公告)日：2014-08-21

申请号：PCT/US2014/015806

申请日：2014-02-11

Applicant: CUMMINS, INC.

Inventor： KUMAR, Ashok ,  SMITH, Michael, A. ,  KAMASAMUDRAM, Krishna ,  CURRIER, Neal ,  YEZERETS, Aleksey

IPC: F01N3/20 ,  F01N9/00

CPC classification number: F01N3/2066 ,  F01N3/106 ,  F01N3/208 ,  F01N9/00 ,  F01N9/005 ,  F01N11/002 ,  F01N13/009 ,  F01N2570/04 ,  F01N2900/1402 ,  F01N2900/1612 ,  F02B37/22 ,  F02D41/005 ,  F02D43/04 ,  Y02T10/144 ,  Y02T10/24 ,  Y02T10/47

Abstract: Systems, methods, and apparatuses are provided for determining an SCR component sulfur value, determining whether the SCR component sulfur value exceeds a sulfur regeneration threshold and increasing an engine NO amount incident to an SCR catalyst in response to the SCR component sulfur value exceeding the sulfur regeneration threshold.

Abstract translation: 提供了用于确定SCR组分硫值的系统，方法和装置，确定SCR组分硫值是否超过硫再生阈值，并响应于SCR组分硫值超过硫而增加引入SCR催化剂的发动机NO量 再生阈值。

公开(公告)号：EP3682097A1

公开(公告)日：2020-07-22

申请号：EP17928486.4

申请日：2017-10-10

Applicant: Cummins Inc.

Inventor： JOSHI, Saurabh Y. ,  CURRIER, Neal W. ,  YEZERETS, Aleksey ,  KUMAR, Ashok ,  RASH, Tyler A. ,  SRINIVASAN, Anand ,  WANG, Di ,  TANG, Yadan

IPC: F01N11/00 ,  G01N33/00