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公开(公告)号：US20160186629A1
公开(公告)日：2016-06-30
申请号：US14586156
申请日：2014-12-30
Applicant: Cummins, Inc.
Inventor： Andrew W. Osburn , Mark N. Bays , Krishna Kamasamudram , Aleksey Yezerets
IPC: F01N3/18
CPC classification number: F01N3/2006 , B01D53/9477 , B01D53/9495 , B01D2251/20 , B01D2255/904 , B01D2255/915 , F01N3/035 , F01N3/10 , F01N3/103 , F01N3/106 , F01N3/18 , F01N3/2066 , F01N3/208 , F01N11/00 , F01N11/002 , F01N13/009 , F01N2550/02 , F01N2550/05 , F01N2610/02 , F01N2610/1493 , F01N2900/1602 , F01N2900/1621 , G01M15/102 , Y02T10/24 , Y02T10/47
Abstract: An apparatus includes a dosing module structured to suspend dosing in an exhaust aftertreatment system; a selective catalytic reduction (SCR) inlet NOx module structured to interpret SCR inlet NOx data and an SCR inlet temperature; a SCR outlet NOx module structured to interpret SCR outlet NOx data; and a system diagnostic module structured to determine an efficiency of a SCR system based on the SCR inlet and outlet NOx data over a range of SCR temperatures, wherein the system diagnostic module is further structured to determine a state of at least one of a diesel oxidation catalyst (DOC), a diesel particulate filter (DPF), and the SCR system based on the SCR efficiency at an elevated SCR temperature range and the SCR efficiency at a relatively lower SCR temperature range relative to a high SCR efficiency threshold and a low SCR efficiency threshold.
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公开(公告)号：US20150218992A1
公开(公告)日：2015-08-06
申请号：US14172259
申请日：2014-02-04
Applicant: Cummins Inc.
Inventor： Aleksey Yezerets , Tamas Szailer , Krishna Kamasamudram , Neal W. Currier , Richard J. Ancimer
IPC: F01N3/20
CPC classification number: F01N3/208 , F01N3/0253 , F01N3/035 , F01N3/106 , F01N3/2006 , F01N3/2066 , F01N13/009 , F01N2260/04 , F01N2550/02 , F01N2560/02 , F01N2570/18 , F01N2610/00 , F01N2900/0601 , F01N2900/08 , F01N2900/1402 , F01N2900/1404 , F01N2900/1602 , F01N2900/1621 , F02D41/027 , F02D41/405 , F02D2200/0802 , Y02T10/24
Abstract: Systems, methods and apparatus are disclosed for targeted regeneration of a catalyst device in an exhaust aftertreatment system of an internal combustion engine. The targeted regeneration can include interpreting, initiating, and/or completing a regeneration event for an SCR catalyst or other type of catalyst in response to a catalyst deactivation condition. A catalyst regeneration event includes at least one of exposing the catalyst to a sufficiently high temperature over a time period that removes contaminants from the catalyst and manipulation of the exhaust gas composition to initiate and/or accelerate removal of contaminants from the catalyst.
Abstract translation: 公开了用于内燃机的排气后处理系统中的催化剂装置的目标再生的系统，方法和装置。 目标再生可以包括解释，启动和/或完成SCR催化剂或其他类型的催化剂的响应于催化剂失活条件的再生事件。 催化剂再生事件包括在一段时间内将催化剂暴露于足够高的温度中的至少一种，其从催化剂中去除污染物并操纵废气组合物以引发和/或加速从催化剂中除去污染物。
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公开(公告)号：US20150113966A1
公开(公告)日：2015-04-30
申请号：US14067814
申请日：2013-10-30
Applicant: Cummins Inc.
Inventor： Krishna Kamasamudram , Neal W. Currier , Ashok Kumar
CPC classification number: B01J29/78 , B01D53/9409 , B01D53/9431 , B01D2251/206 , B01D2255/20723 , B01D2255/20738 , B01D2255/20761 , B01D2255/50 , B01D2255/9032 , B01D2258/012 , B01J29/72 , F01N3/106 , F01N3/2066 , F01N13/009 , F01N13/0093 , F01N2510/0682 , F01N2570/145 , F01N2900/1404 , Y02A50/2344 , Y02C20/10 , Y02T10/24
Abstract: Systems, apparatus and methods are disclosed for reducing the amount of nitrous oxide (N2O) produced in a selective catalytic reductant (SCR) catalyst in an exhaust aftertreatment system. The SCR catalysts are arranged to reduce the amount of N2O produced during NOx reduction while not adversely affecting NOx conversion.
Abstract translation: 公开了用于减少排气后处理系统中在选择性催化还原剂（SCR）催化剂中产生的一氧化二氮（N2O）的量的系统，装置和方法。 SCR催化剂被设置为减少NOx还原期间产生的N 2 O的量，而不会不利地影响NOx转化。
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14.发明申请公开(公告)号：US20140237995A1
公开(公告)日：2014-08-28
申请号：US14189339
申请日：2014-02-25
Applicant: Cummins Inc.
Inventor： Aleksey Yezerets , Krishna Kamasamudram , Neal W. Currier , Ashok Kumar , Michael A. Smith
CPC classification number: F02D41/0235 , B01J38/04 , B01J38/06 , B01J38/08 , B01J38/56 , F01N3/0885 , F01N3/106 , F01N3/2033 , F01N3/2066 , F01N3/208 , F01N11/00 , F01N2550/02 , F01N2610/02 , F01N2610/03 , F01N2610/146 , F01N2900/1404 , Y02T10/24
Abstract: System, apparatus, and methods are disclosed for treating a reduction catalyst that has been exposed to an amount of sulfur. The treating of the reduction catalyst includes providing a fluid stream at a position upstream of the reduction catalyst. The fluid stream includes a temperature and a reductant amount, and the reductant amount includes an amount of urea, ammonia, or hydrocarbons.
Abstract translation: 公开了用于处理暴露于一定量硫的还原催化剂的系统，装置和方法。 还原催化剂的处理包括在还原催化剂的上游位置提供流体物流。 流体流包括温度和还原剂量，并且还原剂量包括一定量的尿素，氨或烃。
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公开(公告)号：US10544720B2
公开(公告)日：2020-01-28
申请号：US15408799
申请日：2017-01-18
Applicant: Cummins Inc.
Inventor： Michael Haas , Krishna Kamasamudram , Ashok Kumar
Abstract: An internal combustion engine system includes an engine and an aftertreatment system that is connected to the engine to receive an exhaust flow from the engine. The aftertreatment system includes a contaminant storage catalyst for storing contaminants produced by the engine during cold start and low temperature operating conditions, and a NOx reduction catalyst downstream of the storage catalyst for receiving the contaminants released from the storage catalyst when temperature conditions in the exhaust flow and/or NOx reduction catalyst are above an effective temperature threshold for NOx reduction. A contaminant amount stored on the storage catalyst can be estimated in response to one or more operating parameters to manage a storage capacity of the storage catalyst. A bypass can used to bypass the storage catalyst to preserve storage capacity for a subsequent cold start condition.
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Patent Agency Ranking
公开(公告)号：US20180363528A1
公开(公告)日：2018-12-20
申请号：US16062266
申请日：2016-12-27
Applicant: CUMMINS INC.
Inventor： Jinyong Luo , Ashok Kumar , Krishna Kamasamudram , Neal W. Currier , Aleksey Yezerets , Yadan Tang , Michael J. Cunningham , Di Wang
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.
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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.
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公开(公告)号：US20170226911A1
公开(公告)日：2017-08-10
申请号：US15408799
申请日：2017-01-18
Applicant: Cummins Inc.
Inventor： Michael Haas , Krishna Kamasamudram , Ashok Kumar
CPC classification number: F01N3/2053 , F01N3/0807 , F01N3/0842 , F01N3/2006 , F01N3/2033 , F01N3/2066 , F01N9/00 , F01N2410/03 , F01N2410/06 , F01N2610/02 , F01N2610/03 , F01N2900/1602 , F01N2900/1614 , Y02T10/24 , Y02T10/26 , Y02T10/47
Abstract: An internal combustion engine system includes an engine and an aftertreatment system that is connected to the engine to receive an exhaust flow from the engine. The aftertreatment system includes a contaminant storage catalyst for storing contaminants produced by the engine during cold start and low temperature operating conditions, and a NOx reduction catalyst downstream of the storage catalyst for receiving the contaminants released from the storage catalyst when temperature conditions in the exhaust flow and/or NOx reduction catalyst are above an effective temperature threshold for NOx reduction. A contaminant amount stored on the storage catalyst can be estimated in response to one or more operating parameters to manage a storage capacity of the storage catalyst. A bypass can used to bypass the storage catalyst to preserve storage capacity for a subsequent cold start condition.
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公开(公告)号：US09517457B2
公开(公告)日：2016-12-13
申请号：US14067814
申请日：2013-10-30
Applicant: Cummins Inc.
Inventor： Krishna Kamasamudram , Neal W. Currier , Ashok Kumar
CPC classification number: B01J29/78 , B01D53/9409 , B01D53/9431 , B01D2251/206 , B01D2255/20723 , B01D2255/20738 , B01D2255/20761 , B01D2255/50 , B01D2255/9032 , B01D2258/012 , B01J29/72 , F01N3/106 , F01N3/2066 , F01N13/009 , F01N13/0093 , F01N2510/0682 , F01N2570/145 , F01N2900/1404 , Y02A50/2344 , Y02C20/10 , Y02T10/24
Abstract: Systems, apparatus and methods are disclosed for reducing the amount of nitrous oxide (N2O) produced in a selective catalytic reductant (SCR) catalyst in an exhaust aftertreatment system. The SCR catalysts are arranged to reduce the amount of N2O produced during NOx reduction while not adversely affecting NOx conversion.
Abstract translation: 公开了用于减少排气后处理系统中在选择性催化还原剂（SCR）催化剂中产生的一氧化二氮（N2O）的量的系统，装置和方法。 SCR催化剂被设置为减少NOx还原期间产生的N 2 O的量，而不会不利地影响NOx转化。
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20.发明授权Systems and methods for NOx reduction and aftertreatment control using passive NOx adsorption 有权使用无源NOx吸附的NOx还原和后处理控制系统和方法公开(公告)号：US09512761B2
公开(公告)日：2016-12-06
申请号：US14453169
申请日：2014-08-06
Applicant: Cummins Inc.
Inventor： Richard J. Ancimer , Mert Geveci , Michael Haas , Alok Joshi , Krishna Kamasamudram
CPC classification number: F01N3/2066 , F01N3/035 , F01N3/103 , F01N3/106 , F01N3/2006 , F01N3/2033 , F01N13/009 , F01N2610/02 , Y02T10/24 , Y02T10/26
Abstract: Systems and methods for managing aftertreatment systems that include passive NOx adsorption devices and SCR catalyst elements are disclosed. Temperature generation devices upstream of the passive NOx adsorption devices facilitate control of the aftertreatment systems to improve fuel economy and NOx conversion efficiency.
Abstract translation: 公开了用于管理包括被动式NOx吸附装置和SCR催化剂元件的后处理系统的系统和方法。 无源NOx吸附装置上游的温度发生装置便于后处理系统的控制，以提高燃料经济性和NOx转化效率。
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