CN101278110A - 用于排气后处理系统的诊断方法 - Google Patents
用于排气后处理系统的诊断方法 Download PDFInfo
- Publication number
- CN101278110A CN101278110A CNA200580051738XA CN200580051738A CN101278110A CN 101278110 A CN101278110 A CN 101278110A CN A200580051738X A CNA200580051738X A CN A200580051738XA CN 200580051738 A CN200580051738 A CN 200580051738A CN 101278110 A CN101278110 A CN 101278110A
- Authority
- CN
- China
- Prior art keywords
- value
- nox
- mass flow
- scr
- nox sensor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N11/00—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/009—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more separate purifying devices arranged in series
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
- F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
- F01N3/2066—Selective catalytic reduction [SCR]
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/14—Introducing closed-loop corrections
- F02D41/1438—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
- F02D41/1444—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases
- F02D41/146—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases the characteristics being an NOx content or concentration
- F02D41/1463—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases the characteristics being an NOx content or concentration of the exhaust gases downstream of exhaust gas treatment apparatus
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2550/00—Monitoring or diagnosing the deterioration of exhaust systems
- F01N2550/05—Systems for adding substances into exhaust
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2560/00—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics
- F01N2560/02—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics the means being an exhaust gas sensor
- F01N2560/026—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics the means being an exhaust gas sensor for measuring or detecting NOx
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/02—Adding substances to exhaust gases the substance being ammonia or urea
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/22—Safety or indicating devices for abnormal conditions
- F02D41/222—Safety or indicating devices for abnormal conditions relating to the failure of sensors or parameter detection devices
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
一种用于检测内燃机的选择性催化还原(SCR)排气后处理系统故障的诊断方法。该方法测量并记录用于液态还原剂正常质量流量的第一平均NOx传感器值,然后测量和记录与较高质量流量水平相关的第二平均NOx传感器值。比较这两个记录的NOx传感器值并判断,第一值高于第二值或者还是第一值低于第二值。可以在配给系统或SCR还原剂中发现故障原因。
Description
技术领域
本发明涉及用于检测选择性催化还原(SCR)后处理系统的故障的诊断方法的领域,该后处理系统用于根据权利要求1前序部分描述的内燃机排气通道中的NOx的还原。
背景技术
配备有柴油机或者其它贫燃发动机的车辆具有提高的燃油经济性的优点,但是由于排气中高含量的氧,所以需要控制这种发动机中氧化氮(NOx)的排放。关于这点,选择性催化还原(SCR)催化剂是已知的,以实现NOx的高效转化,在选择性催化还原(SCR)中,通过将还原剂例如尿素主动注入到进入催化剂中的排气混合物中而连续地去除NOx。
典型的贫燃排气后处理系统在US6928806中介绍,其包括用于通过注入还原剂来转化发动机排气混合物中NOx的SCR催化剂。SCR上游和下游的NOx传感器在进入和离开SCR催化剂的排气通道中联接。这些传感器的输出由控制器12读取,并且可以用来确定SCR的NOx转化效率。
上述后处理系统能够检测NOx转化系统的故障,但是,故障原因可能发现是在尿素配给系统或者SCR催化剂中。例如,尿素配给系统可能堵塞,或者SCR催化剂可能失活。
因此,存在对用于诊断SCR催化剂系统的诊断工具的需要,以便于维护和维修。
发明内容
本发明的目的是提供一种能够准确地诊断故障原因的诊断方法。
本发明的方面在于一种用于检测用于还原内燃机排气通道中的NOx的选择性催化还原(SCR)后处理系统故障的诊断方法,该SCR系统包括向催化剂反应器上游的排气注入液态还原剂的配给系统和用于监测SCR反应器下游的排气中NOx排放的下游侧NOx传感器,该诊断方法包括如下步骤:将发动机转矩范围和速度范围设定到预定范围并将液态试剂的质量流量调节到用于该范围的正常水平;测量并记录用于所述质量流量水平的第一平均NOx传感器值,从而将液态试剂质量流量增加到比用于所述范围的正常水平高的水平;测量并记录与所述较高质量流量水平相关的另一个第二平均NOx传感器值;以及比较这两个记录的NOx传感器值并判断是第一值高于第二值,还是第一值低于第二值。
参考附图,将通过下面的描述理解本发明的其它目的和特征。
附图说明
下面将参考附图中所示实施例来更详细地描述本发明,在附图中:
图1概略地示出了具有应用本发明的后处理系统的内燃机;以及
图2是示出了根据本发明的故障诊断的流程图。
具体实施方式
图1示出了用于内燃机10的排气后处理系统的大体构造,该排气后处理系统包括第一排气管部分11,第一排气管部分11将排气从发动机引向尿素基选择性催化还原(SCR)催化剂12。发动机可以是例如用于重型车辆的柴油机。SCR催化剂通过第二排气管部分14连接到净化催化剂反应器13。第三排气管部分15将排气从反应器13引向大气。
SCR催化剂优选为基底金属/沸石配方。还原剂例如尿素水溶液存储在存储容器中(未示出),并输送到联接于SCR催化剂12上游的管部分11的还原剂输送系统16。还原剂由泵通过控制阀和注射器来计量输出,泵和阀都由控制器17控制,优选由微处理器控制。NOx传感器18联接到净化催化剂13下游的管部分15。还原剂的计量基于输入数据,例如发动机转矩负载、发动机转速和来自NOx传感器18的输出。
如果后处理系统发生故障,即记录的尾管NOx水平超过预期极限,则需要确定系统中哪个部件正在发生故障。首先,应当检查溶液中存在尿素并且NOx传感器没有发生故障。
如果已经确定存在尿素且NOx传感器是可靠的,则故障只能来源于催化剂失活或者尿素配给系统堵塞(或者很可能两者同时发生)。在这种情况下本发明的诊断方法是有用的。隔离故障部件对于维护和维修具有很大价值。还有可能的是,将来车载诊断的法规会要求隔离故障部件。
下面参考图2的流程图来解释根据本发明的还原系统诊断细节。
情况是SCR系统下游的NOx传感器18已经指示尾管NOx增加了。在诊断之前还已经确定出:在配给系统配给的溶液中存在尿素并且NOx传感器正在指示正确值。
所建议方法的目的是确定是否由于催化剂失活或者尿素配给系统堵塞而注入尿素过少而导致尾管NOx过高。该方法提供正确结果的先决条件在于控制尿素的质量流量,使得产生的尾管NOx是下面两者中最小的:
a)所预期的尾管NOx浓度
b)相对于当前催化剂活性的最小尾管NOx浓度
在步骤S1和S2中,设定对发动机转矩和发动机转速的要求。载荷点范围很可能受到限制,其次更重要的是,在进行诊断期间载荷点必须大致相同。这是因为该方法使用NOx传感器值,如果发动机输出NOx浓度在诊断期间变化很大,这会掩盖将被检测出的变化。(因此,如果偏离初始载荷点过大,则必须中断进程并在新的载荷点重新开始等。)
在步骤S3中,将尿素质量流量保持在由尿素控制系统确定的正常值。测量催化剂下游的平均NOx传感器值。这里这个值被称作“NOx浓度_正常尿素”
在步骤S4中,尿素质量流量增加,使其略高于当前载荷点的正常值,并且测量平均NOx传感器值。该值被称作“NOx浓度_增加尿素”。
现在,在步骤S5中比较两个NOx传感器信号。两个结果定义为:
A)NOx浓度_正常尿素≥NOx浓度_增加尿素→尿素配给系统堵塞
B)NOx浓度_正常尿素<NOx浓度_增加尿素→SCR催化剂失活
当步骤S5为真时,根据步骤S8,尿素配给系统堵塞并且尿素配给不足。然后,增加尿素配给将增加催化剂中NOx的转化,或者可能堵塞很严重,以致增加配给根本不能导致喷射出更多的尿素。这两种情况都被A包括。
当步骤S5不为真时,根据步骤S7,催化剂出现故障,所以增加尿素的质量流量将不增加NOx的转化,因为催化剂已经在最大容量下工作。相反,NOx传感器将检测出过量的NH3作为增加的NOx浓度。这是由于NOx传感器对NH3交叉敏感(cross sensitive)。此外,SCR催化剂下游的净化催化剂可将NH3在到达NOx传感器18之前氧化成NOx。
或者使用从NOx传感器浓度计算出的变量来代替NOx浓度(例如NOx转化量)。
该方法的一个优点在于比较两个测量值的相对大小。因此不依赖于任何绝对值。
本发明不应被认为局限于上述所示实施例,在下面专利权利要求的范围内可以作出大量变型和修改。例如,图1的后处理系统可以包括颗粒过滤器。
Claims (5)
1.一种用于检测选择性催化还原(SCR)后处理系统故障的诊断方法,该后处理系统用于内燃机(10)的排气通道(14)中的NOx的还原,该SCR系统包括向催化剂反应器(12)上游的排气注入液态还原剂的配给系统(16)和用于监测SCR反应器下游的排气中NOx排放的下游侧NOx传感器(18),该诊断方法包括:
其特征在于如下步骤
将发动机转矩范围和速度范围设定到预定范围并将液态试剂质量流量调节到用于该范围的正常水平,
测量并记录用于所述质量流量水平的平均NOx传感器值,
将所述液态试剂质量流量增加到比用于所述范围的正常水平高的水平,
测量并记录与所述较高质量流量水平相关的另一平均NOx传感器值,
比较这两个记录的NOx传感器值并判断用于正常质量流量的值高于用于增加的质量流量的值,还是用于正常质量流量的值低于用于增加的质量流量的值。
2.根据权利要求1的方法,
其特征在于控制所述用于正常质量流量的值是否等于所述用于增加的质量流量的值的附加步骤。
3.根据权利要求1或2的方法,
其特征在于控制所注入的液态试剂为正确类型的附加步骤。
4.根据权利要求1至3任一项的方法,
其特征在于控制所述NOx传感器的功能的附加步骤。
5.根据权利要求1至4的任一项的方法,
其中净化催化剂(13)在所述后处理系统中位于所述SCR催化剂(12)和所述NOx传感器(18)之间。
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/SE2005/001447 WO2007037730A1 (en) | 2005-09-29 | 2005-09-29 | A diagnostic method for an exhaust aftertreatment system |
Publications (2)
Publication Number | Publication Date |
---|---|
CN101278110A true CN101278110A (zh) | 2008-10-01 |
CN100587235C CN100587235C (zh) | 2010-02-03 |
Family
ID=37900046
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN200580051738A Expired - Fee Related CN100587235C (zh) | 2005-09-29 | 2005-09-29 | 用于排气后处理系统的诊断方法 |
Country Status (6)
Country | Link |
---|---|
US (1) | US7854161B2 (zh) |
EP (1) | EP1931865B1 (zh) |
JP (1) | JP4718613B2 (zh) |
CN (1) | CN100587235C (zh) |
BR (1) | BRPI0520558A2 (zh) |
WO (1) | WO2007037730A1 (zh) |
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101988422A (zh) * | 2009-07-30 | 2011-03-23 | 通用汽车环球科技运作公司 | 用于对scr催化剂的工作进行检验的方法和系统 |
CN101988421A (zh) * | 2009-07-30 | 2011-03-23 | 福特环球技术公司 | 用于诊断具有多于一个scr区的排放系统的方法和系统 |
CN102213131A (zh) * | 2010-04-05 | 2011-10-12 | 博世株式会社 | 排气净化系统的异常诊断装置及方法以及排气净化系统 |
CN102317586A (zh) * | 2009-02-05 | 2012-01-11 | 德尔福技术控股有限公司 | 氧化催化剂的车载诊断 |
CN102713180A (zh) * | 2009-12-18 | 2012-10-03 | 沃尔沃拉斯特瓦格纳公司 | 用于对排气后处理装置中的还原剂缓冲器水平进行控制的方法 |
CN102985168A (zh) * | 2010-06-29 | 2013-03-20 | 瓦锡兰芬兰有限公司 | 选择性催化还原的控制方法和装置 |
CN103038474A (zh) * | 2010-06-23 | 2013-04-10 | 英瑞杰汽车系统研究公司 | 用于监控scr系统的方法 |
CN103748325A (zh) * | 2011-04-05 | 2014-04-23 | 卡明斯散发控制技术公司 | 用于后处理系统监测的系统、方法和设备 |
CN104074581A (zh) * | 2014-06-11 | 2014-10-01 | 安徽华菱汽车有限公司 | 一种报错方法、装置及系统 |
CN106257006A (zh) * | 2015-06-19 | 2016-12-28 | 丰田自动车株式会社 | 异常诊断装置 |
CN107542563A (zh) * | 2016-06-28 | 2018-01-05 | 罗伯特·博世有限公司 | 借助于氨填充水平在scr系统中进行故障识别 |
CN108474282A (zh) * | 2016-01-22 | 2018-08-31 | 康明斯有限公司 | 确定还原剂输送性能的系统和方法 |
CN110433658A (zh) * | 2019-07-09 | 2019-11-12 | 北京工业大学 | 一种柴油机多台架氮氧化物治理的方法及实现装置 |
CN110541745A (zh) * | 2019-09-20 | 2019-12-06 | 潍柴动力股份有限公司 | 异常定位方法、装置及电子控制单元 |
Families Citing this family (38)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4710868B2 (ja) * | 2007-04-25 | 2011-06-29 | トヨタ自動車株式会社 | 内燃機関の排気浄化装置 |
DE102007022594A1 (de) * | 2007-05-14 | 2008-11-27 | Robert Bosch Gmbh | Diagnoseverfahren für ein in einen Abgasbereich einer Brennkraftmaschine einzubringendes Reagenzmittel und Vorrichtung zur Durchführung des Verfahrens |
KR100957138B1 (ko) * | 2007-07-09 | 2010-05-11 | 현대자동차주식회사 | 질소산화물 센서 고장 판단 방법 및 이를 수행하는 선택적환원 촉매 시스템 |
DE102007037569B4 (de) | 2007-08-09 | 2020-01-16 | Daimler Ag | Verfahren zum Prüfen eines Abgasnachbehandlungssystems |
DE102007040439A1 (de) * | 2007-08-28 | 2009-03-05 | Daimler Ag | Betriebs- und Diagnoseverfahren für ein SCR-Abgasnachbehandlungssystem |
JP4445002B2 (ja) * | 2007-11-21 | 2010-04-07 | 株式会社日本自動車部品総合研究所 | 排気浄化装置 |
KR100999617B1 (ko) * | 2007-12-14 | 2010-12-08 | 현대자동차주식회사 | 선택적 촉매의 모니터링장치 |
US9657630B2 (en) * | 2008-12-18 | 2017-05-23 | GM Global Technology Operations LLC | Diagnostic systems and methods for selective catalytic reduction (SCR) systems based on NOx sensor feedback |
US8919102B2 (en) | 2009-01-13 | 2014-12-30 | Toyota Jidosha Kabushiki Kaisha | Exhaust purifying device for internal combustion engines |
US8091416B2 (en) * | 2009-01-16 | 2012-01-10 | GM Global Technology Operations LLC | Robust design of diagnostic enabling conditions for SCR NOx conversion efficiency monitor |
US8555613B2 (en) * | 2009-03-02 | 2013-10-15 | GM Global Technology Operations LLC | Model-based diagnostics of NOx sensor malfunction for selective catalyst reduction system |
US9255510B2 (en) * | 2009-03-09 | 2016-02-09 | GM Global Technology Operations LLC | Ammonia (NH3) storage control system and method based on a nitrogen oxide(NOx) sensor |
US8863504B2 (en) * | 2009-09-30 | 2014-10-21 | Cummins Inc. | System, method, and apparatus for determining aftertreatment fluid quality |
US8429898B2 (en) * | 2010-06-18 | 2013-04-30 | GM Global Technology Operations LLC | Selective catalytic reduction (SCR) catalyst depletion control systems and methods |
US8454916B2 (en) | 2010-06-18 | 2013-06-04 | GM Global Technology Operations LLC | Selective catalytic reduction (SCR) catalyst depletion control systems and methods |
JP5574120B2 (ja) * | 2011-04-28 | 2014-08-20 | 三菱ふそうトラック・バス株式会社 | NOx浄化システムの診断装置 |
US8694197B2 (en) * | 2011-05-26 | 2014-04-08 | GM Global Technology Operations LLC | Gain/amplitude diagnostics of NOx sensors |
US9677488B2 (en) | 2012-04-10 | 2017-06-13 | Volvo Lastvagnar Ab | Self-diagnosing method for diagnosing a SCR system |
US8720187B2 (en) * | 2012-05-07 | 2014-05-13 | GM Global Technology Operations LLC | Exhaust diagnostic control system and method with selective disablement of NOx reduction efficiency diagnostic |
FR3006371B1 (fr) * | 2013-05-28 | 2017-04-28 | Renault Sas | Procede et systeme de controle de la qualite d'un agent de reduction catalytique selective d'oxydes d'azote, injecte dans une ligne d'echappement d'un vehicule automobile |
FR3007795B1 (fr) | 2013-06-28 | 2015-06-19 | Renault Sa | Systeme et procede de diagnostic de la reduction catalytique selective d'un vehicule automobile. |
EP3051085B1 (en) | 2013-09-25 | 2017-07-05 | Toyota Jidosha Kabushiki Kaisha | Diagnostic device for exhaust-gas purification device |
TWI533921B (zh) | 2014-03-26 | 2016-05-21 | 財團法人車輛研究測試中心 | 氣體互感現象分析系統及其分析方法 |
GB2518287A (en) * | 2014-07-28 | 2015-03-18 | Daimler Ag | Method and control assembly for operating an exhaust gas system |
KR101684135B1 (ko) * | 2015-06-26 | 2016-12-08 | 현대자동차주식회사 | Scr 시스템의 고장진단방법 |
FR3042220B1 (fr) * | 2015-10-08 | 2017-11-03 | Renault Sas | Procede de diagnostic d'un catalyseur de reduction selective des oxydes d'azote |
WO2018132059A1 (en) * | 2017-01-16 | 2018-07-19 | Scania Cv Ab | A system and a method for determining a cause for impaired performance of a catalytic configuration |
US10082061B1 (en) * | 2017-03-07 | 2018-09-25 | GM Global Technology Operations LLC | Predictive control for slip and breakthrough determination of selective catalytic reduction systems |
DE102018215627A1 (de) * | 2017-11-29 | 2019-05-29 | Continental Automotive Gmbh | Verfahren zum Betreiben einer Abgasnachbehandlungsanlage einer Brennkraftmaschine und Abgasnachbehandlungsanlage |
DE102018202117A1 (de) * | 2018-02-12 | 2019-08-14 | Robert Bosch Gmbh | Verfahren zum Detektieren eines Emulators für ein SCR-Katalysatorsystem |
US11008922B2 (en) | 2018-12-12 | 2021-05-18 | Cummins Inc. | System and method for diagnosing health of an exhaust aftertreatment system |
US11760170B2 (en) | 2020-08-20 | 2023-09-19 | Denso International America, Inc. | Olfaction sensor preservation systems and methods |
US11636870B2 (en) | 2020-08-20 | 2023-04-25 | Denso International America, Inc. | Smoking cessation systems and methods |
US11828210B2 (en) | 2020-08-20 | 2023-11-28 | Denso International America, Inc. | Diagnostic systems and methods of vehicles using olfaction |
US11932080B2 (en) | 2020-08-20 | 2024-03-19 | Denso International America, Inc. | Diagnostic and recirculation control systems and methods |
US11760169B2 (en) | 2020-08-20 | 2023-09-19 | Denso International America, Inc. | Particulate control systems and methods for olfaction sensors |
US11881093B2 (en) | 2020-08-20 | 2024-01-23 | Denso International America, Inc. | Systems and methods for identifying smoking in vehicles |
US11813926B2 (en) | 2020-08-20 | 2023-11-14 | Denso International America, Inc. | Binding agent and olfaction sensor |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5522218A (en) | 1994-08-23 | 1996-06-04 | Caterpillar Inc. | Combustion exhaust purification system and method |
JP3852788B2 (ja) | 1995-10-02 | 2006-12-06 | 株式会社小松製作所 | ディーゼルエンジンのNOx 触媒の劣化検出装置およびその劣化検出方法 |
JP3702701B2 (ja) * | 1999-04-12 | 2005-10-05 | トヨタ自動車株式会社 | 内燃機関の排気浄化装置 |
DE19924029C2 (de) * | 1999-05-26 | 2001-05-23 | Porsche Ag | Verfahren zur Überwachung der Funktion eines Systems zur Abgasnachbehandlung |
JP4277374B2 (ja) * | 1999-07-22 | 2009-06-10 | トヨタ自動車株式会社 | 内燃機関の排気浄化装置 |
US6546720B2 (en) | 2001-09-04 | 2003-04-15 | Ford Global Technologies, Inc. | Method and apparatus for controlling the amount of reactant to be added to a substance using a sensor which is responsive to both the reactant and the substance |
US6928806B2 (en) * | 2002-11-21 | 2005-08-16 | Ford Global Technologies, Llc | Exhaust gas aftertreatment systems |
DE10254843A1 (de) * | 2002-11-25 | 2004-06-03 | Robert Bosch Gmbh | Verfahren und Vorrichtung zur Überwachung eines Abgasnachbehandlungssystems |
WO2006081598A2 (de) * | 2005-02-03 | 2006-08-10 | Avl List Gmbh | Verfahren zur diagnose eines abgasnachbehandlungssystems |
JP4963052B2 (ja) * | 2006-09-22 | 2012-06-27 | Udトラックス株式会社 | 排気温度センサの異常検出装置 |
-
2005
- 2005-09-29 WO PCT/SE2005/001447 patent/WO2007037730A1/en active Application Filing
- 2005-09-29 BR BRPI0520558-1A patent/BRPI0520558A2/pt not_active IP Right Cessation
- 2005-09-29 CN CN200580051738A patent/CN100587235C/zh not_active Expired - Fee Related
- 2005-09-29 EP EP05788533.7A patent/EP1931865B1/en not_active Not-in-force
- 2005-09-29 JP JP2008533286A patent/JP4718613B2/ja not_active Expired - Fee Related
- 2005-09-29 US US12/088,712 patent/US7854161B2/en not_active Expired - Fee Related
Cited By (28)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102317586A (zh) * | 2009-02-05 | 2012-01-11 | 德尔福技术控股有限公司 | 氧化催化剂的车载诊断 |
CN102317586B (zh) * | 2009-02-05 | 2013-11-06 | 德尔福技术控股有限公司 | 用于监测内燃机排气管线中的氧化催化剂的方法 |
US9304061B2 (en) | 2009-07-30 | 2016-04-05 | Ford Global Technologies, Llc | Methods and systems for diagnostics of an emission system with more than one SCR region |
CN101988422A (zh) * | 2009-07-30 | 2011-03-23 | 通用汽车环球科技运作公司 | 用于对scr催化剂的工作进行检验的方法和系统 |
CN101988422B (zh) * | 2009-07-30 | 2013-07-31 | 通用汽车环球科技运作公司 | 用于对scr催化剂的工作进行检验的方法和系统 |
CN101988421A (zh) * | 2009-07-30 | 2011-03-23 | 福特环球技术公司 | 用于诊断具有多于一个scr区的排放系统的方法和系统 |
CN101988421B (zh) * | 2009-07-30 | 2015-04-08 | 福特环球技术公司 | 用于诊断具有多于一个scr区的排放系统的方法和系统 |
CN102713180B (zh) * | 2009-12-18 | 2015-09-16 | 沃尔沃拉斯特瓦格纳公司 | 用于对排气后处理装置中的还原剂缓冲器水平进行控制的方法 |
CN102713180A (zh) * | 2009-12-18 | 2012-10-03 | 沃尔沃拉斯特瓦格纳公司 | 用于对排气后处理装置中的还原剂缓冲器水平进行控制的方法 |
CN102213131A (zh) * | 2010-04-05 | 2011-10-12 | 博世株式会社 | 排气净化系统的异常诊断装置及方法以及排气净化系统 |
CN103038474A (zh) * | 2010-06-23 | 2013-04-10 | 英瑞杰汽车系统研究公司 | 用于监控scr系统的方法 |
CN102985168A (zh) * | 2010-06-29 | 2013-03-20 | 瓦锡兰芬兰有限公司 | 选择性催化还原的控制方法和装置 |
CN102985168B (zh) * | 2010-06-29 | 2015-01-07 | 瓦锡兰芬兰有限公司 | 选择性催化还原的控制方法和装置 |
CN103748325A (zh) * | 2011-04-05 | 2014-04-23 | 卡明斯散发控制技术公司 | 用于后处理系统监测的系统、方法和设备 |
CN106958478B (zh) * | 2011-04-05 | 2020-04-03 | 卡明斯散发控制技术公司 | 用于后处理系统监测的系统、方法和设备 |
US10927741B2 (en) | 2011-04-05 | 2021-02-23 | Cummins Emission Solutions Inc. | System, method, and apparatus for aftertreatment system monitoring |
CN103748325B (zh) * | 2011-04-05 | 2017-03-15 | 卡明斯散发控制技术公司 | 用于后处理系统监测的系统、方法和设备 |
CN106958478A (zh) * | 2011-04-05 | 2017-07-18 | 卡明斯散发控制技术公司 | 用于后处理系统监测的系统、方法和设备 |
CN104074581A (zh) * | 2014-06-11 | 2014-10-01 | 安徽华菱汽车有限公司 | 一种报错方法、装置及系统 |
CN106257006B (zh) * | 2015-06-19 | 2018-11-13 | 丰田自动车株式会社 | 异常诊断装置 |
CN106257006A (zh) * | 2015-06-19 | 2016-12-28 | 丰田自动车株式会社 | 异常诊断装置 |
CN108474282A (zh) * | 2016-01-22 | 2018-08-31 | 康明斯有限公司 | 确定还原剂输送性能的系统和方法 |
CN108474282B (zh) * | 2016-01-22 | 2021-04-30 | 康明斯有限公司 | 确定还原剂输送性能的系统和方法 |
CN107542563A (zh) * | 2016-06-28 | 2018-01-05 | 罗伯特·博世有限公司 | 借助于氨填充水平在scr系统中进行故障识别 |
CN107542563B (zh) * | 2016-06-28 | 2021-04-16 | 罗伯特·博世有限公司 | 借助于氨填充水平在scr系统中进行故障识别 |
CN110433658A (zh) * | 2019-07-09 | 2019-11-12 | 北京工业大学 | 一种柴油机多台架氮氧化物治理的方法及实现装置 |
CN110433658B (zh) * | 2019-07-09 | 2021-11-19 | 北京工业大学 | 一种柴油机多台架氮氧化物治理的方法及实现装置 |
CN110541745A (zh) * | 2019-09-20 | 2019-12-06 | 潍柴动力股份有限公司 | 异常定位方法、装置及电子控制单元 |
Also Published As
Publication number | Publication date |
---|---|
CN100587235C (zh) | 2010-02-03 |
US20090049899A1 (en) | 2009-02-26 |
JP4718613B2 (ja) | 2011-07-06 |
WO2007037730A1 (en) | 2007-04-05 |
BRPI0520558A2 (pt) | 2009-05-12 |
JP2009510324A (ja) | 2009-03-12 |
EP1931865B1 (en) | 2013-11-13 |
US7854161B2 (en) | 2010-12-21 |
EP1931865A1 (en) | 2008-06-18 |
EP1931865A4 (en) | 2010-10-06 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN100587235C (zh) | 用于排气后处理系统的诊断方法 | |
CN102667090B (zh) | 评估nox传感器响应速率劣化的设备、系统和方法 | |
CN101839162B (zh) | 基于NOx传感器反馈的选择性催化还原系统的诊断系统和方法 | |
US8596045B2 (en) | On-board-diagnosis method for an exhaust aftertreatment system and on-board-diagnosis system for an exhaust aftertreatment system | |
CN102165157B (zh) | 一种用于运行带有scr催化器及在上游起氧化催化作用的排气净化部件的排气净化系统的方法 | |
EP2141331B1 (en) | Exhaust purification device for internal combustion engine | |
KR102059602B1 (ko) | 자동차의 선택적 촉매 환원 시스템을 진단하기 위한 시스템 및 방법 | |
US9038369B2 (en) | Systems and methods for aftertreatment system diagnostics | |
CN101790623A (zh) | Scr排气后处理系统的运行方法及诊断方法 | |
US8783019B2 (en) | Apparatus and method for onboard performance monitoring of oxidation catalyst | |
US10690079B2 (en) | Method for diagnosing and controlling ammonia oxidation in selective catalytic reduction devices | |
US20110047964A1 (en) | Methods, systems, and apparatuses of scr diagnostics | |
CN104364484B (zh) | 异常诊断装置以及内燃机的排气净化装置 | |
CN110821621B (zh) | 用于监测scr催化器的方法 | |
US9664089B2 (en) | Fault diagnosis method of SCR system and an apparatus thereof | |
CN111263848A (zh) | 用于操作柴油发动机的废气后处理系统的方法和废气后处理系统 | |
US8549836B2 (en) | Method for operating an exhaust system, exhaust system and vehicle having an exhaust system | |
US8682595B2 (en) | Method to estimate NO2 concentration in an exhaust gas of an internal combustion engine | |
CN114183224A (zh) | 用于排气后处理系统的方法和系统 | |
CN103806993A (zh) | 排气后处理脱硫控制 | |
US9523974B2 (en) | Method of controlling operation of an exhaust fluid treatment apparatus | |
Gong et al. | NH 3 slip detection using NO x sensor | |
CN114458429A (zh) | 增强颗粒捕捉器被动再生的校准方法、校准模块及可读存储介质 | |
JP2020190221A (ja) | 還元触媒の異常診断装置 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100203 Termination date: 20140929 |
|
EXPY | Termination of patent right or utility model |