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1.发明授权
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2.发明公开
公开(公告)号：EP3604757A1
公开(公告)日：2020-02-05
申请号：EP19198683.5
申请日：2010-12-21
申请人： Cummins IP, Inc.
发明人： Wilhelm, Daniel D. , Owusu, Kwadwo O. , Evans, April , Lin, Xiao , Kern, Robert , Mitchell, Douglas A. , Farrell, Lisa
IPC分类号： F01N11/00 , F01N3/18 , B01D53/94 , F01N3/023 , F01N3/20 , F01N13/00 , F01N3/021 , F01N3/10 , F02D41/02 , F02D41/14
摘要： According to one embodiment, described herein is an apparatus for mitigating on-board diagnostic (OBD) faults generated by an OBD system of an internal combustion engine (ICE) system (10) having a selective catalytic reduction system (230) with a diesel exhaust fluid (DEF) decomposition tube (239). The apparatus includes a fault mitigation module (320) that is configured to monitor at least one OBD signal of the OBD system and issue a request (325) for regenerating the DEF decomposition tube when a value of the at least one OBD signal reaches a predetermined regeneration threshold corresponding with the at least one OBD signal. The regeneration threshold is reachable prior to an OBD fault threshold corresponding with the at least one OBD signal. The apparatus also includes a regeneration module (340) that is configured to regenerate the DEF decomposition tube according to the issued request.
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3.发明公开Apparatus, method and system for diagnosing reductant deposits in an exhaust aftertreatment system 审中-公开Vorrichtung，Verfahren und System zur Diagnus von Reduktionsmittelablagerungen in einem Abgasnachbehandlungssystem
公开(公告)号：EP2772622A1
公开(公告)日：2014-09-03
申请号：EP14156645.5
申请日：2014-02-25
申请人： Cummins IP, Inc.
CPC分类号： F01N9/00 , F01N3/2066 , F01N11/002 , F01N2550/05 , F01N2560/06 , F01N2610/02 , F01N2610/03 , F01N2610/148 , F01N2900/1404 , F02D41/027 , Y02T10/47
摘要： An exhaust gas treatment system for an internal combustion engine has a reluctant delivery system that delivers reductant to an exhaust stream in an exhaust aftertreatment system. A temperature sensor is positioned in or near the flow of reductant and exhaust to measure the temperature of the reluctant and exhaust. A change in temperature over time, such as an increase, decrease, or change in variation amplitude, indicates the presence of a reductant deposit in the system. Detection of the deposit initiates a regeneration cycle in which the operating characteristic of the system change to eliminate the reductant deposit to present it front hindering the performance of the exhaust aftertreatment system.
摘要翻译： 用于内燃机的废气处理系统具有将还原剂输送到排气后处理系统中的废气流的不愿意的输送系统。 温度传感器位于还原剂和排气流中或附近，以测量re气和排气的温度。 温度随时间的变化，如增加，减少或变化幅度的变化，表明在系统中存在还原剂沉积物。 沉积物的检测开始了再生循环，其中系统的操作特性改变以消除还原剂沉积物，以使其前面阻碍排气后处理系统的性能。
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4.发明公开
公开(公告)号：EP3486445A1
公开(公告)日：2019-05-22
申请号：EP18215750.3
申请日：2014-02-25
申请人： Cummins IP, Inc.
摘要： An exhaust gas treatment system for an internal combustion engine may have a reductant delivery system that delivers reductant to an exhaust stream in an exhaust aftertreatment system. A temperature sensor may be positioned in or near the flow of reductant and exhaust to measure the temperature of the reductant and exhaust. A change in temperature over time, such as an increase, decrease, or change in variation amplitude, may indicate the presence of a reductant deposit in the system. Detection of the deposit may initiate a regeneration cycle in which the operating characteristics of the system change to eliminate the reductant deposit to prevent it from hindering the performance of the exhaust aftertreatment system.
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5.发明授权
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