SE0502822L - Förfarande och inrättning för övervakning av funktionen hos en sensor eller system - Google Patents

Förfarande och inrättning för övervakning av funktionen hos en sensor eller system

Info

Publication number
SE0502822L
SE0502822L SE0502822A SE0502822A SE0502822L SE 0502822 L SE0502822 L SE 0502822L SE 0502822 A SE0502822 A SE 0502822A SE 0502822 A SE0502822 A SE 0502822A SE 0502822 L SE0502822 L SE 0502822L
Authority
SE
Sweden
Prior art keywords
value
sensor
established
variance
comparison
Prior art date
Application number
SE0502822A
Other languages
English (en)
Other versions
SE529410C2 (sv
Inventor
David Elfvik
Original Assignee
Scania Cv Abp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Scania Cv Abp filed Critical Scania Cv Abp
Priority to SE0502822A priority Critical patent/SE529410C2/sv
Priority to PCT/SE2006/050551 priority patent/WO2007073324A1/en
Priority to CNA2006800478623A priority patent/CN101341315A/zh
Priority to US12/097,160 priority patent/US7680587B2/en
Priority to BRPI0620226-8A priority patent/BRPI0620226A2/pt
Priority to JP2008547180A priority patent/JP2009520155A/ja
Priority to EP06824617A priority patent/EP1969215A1/en
Publication of SE0502822L publication Critical patent/SE0502822L/sv
Publication of SE529410C2 publication Critical patent/SE529410C2/sv

Links

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
    • 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
    • F01N3/206—Adding periodically or continuously substances to exhaust gases for promoting purification, e.g. catalytic material in liquid form, NOx reducing agents
    • 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
    • F01N11/002—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity the diagnostic devices measuring or estimating temperature or pressure in, or downstream of the exhaust 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
    • F01N11/00—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity
    • F01N11/002—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity the diagnostic devices measuring or estimating temperature or pressure in, or downstream of the exhaust apparatus
    • F01N11/005—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity the diagnostic devices measuring or estimating temperature or pressure in, or downstream of the exhaust apparatus the temperature or pressure being estimated, e.g. by means of a theoretical model
    • 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
    • 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
    • F01N9/00—Electrical control of exhaust gas treating apparatus
    • F01N9/007—Storing data relevant to operation of exhaust systems for later retrieval and analysis, e.g. to research exhaust system malfunctions
    • 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
    • F02D41/021—Introducing corrections for particular conditions exterior to the engine
    • F02D41/0235—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus
    • 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
    • F02D41/1446—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 exhaust temperatures
    • 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
    • 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
    • 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
    • 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
    • F01N2550/02—Catalytic activity of catalytic converters
    • 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
    • F01N9/00—Electrical control of exhaust gas treating apparatus
    • F01N9/005—Electrical control of exhaust gas treating apparatus using models instead of sensors to determine operating characteristics of exhaust systems, e.g. calculating catalyst temperature instead of measuring it directly
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2400/00—Control systems adapted for specific engine types; Special features of engine control systems not otherwise provided for; Power supply, connectors or cabling for engine control systems
    • F02D2400/08—Redundant elements, e.g. two sensors for measuring the same parameter
    • 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
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
    • 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)
  • Combined Controls Of Internal Combustion Engines (AREA)
SE0502822A 2005-12-20 2005-12-20 Förfarande och inrättning för övervakning av funktionen hos en sensor eller system SE529410C2 (sv)

Priority Applications (7)

Application Number Priority Date Filing Date Title
SE0502822A SE529410C2 (sv) 2005-12-20 2005-12-20 Förfarande och inrättning för övervakning av funktionen hos en sensor eller system
PCT/SE2006/050551 WO2007073324A1 (en) 2005-12-20 2006-12-06 A method and an arrangement for monitoring the functioning of a sensor or an exhaust gas aftertreatment system
CNA2006800478623A CN101341315A (zh) 2005-12-20 2006-12-06 用于监控传感器或废气再处理***的功能的方法和设备
US12/097,160 US7680587B2 (en) 2005-12-20 2006-12-06 Method and an arrangement for monitoring the functioning of a sensor or an exhaust gas aftertreatment system
BRPI0620226-8A BRPI0620226A2 (pt) 2005-12-20 2006-12-06 método e arranjo para monitorar o funcionamento de um sensor ou um sistema de pós-tratamento de gás de exaustão
JP2008547180A JP2009520155A (ja) 2005-12-20 2006-12-06 センサまたは排気ガス後処理システムの機能を監視するための方法および装置
EP06824617A EP1969215A1 (en) 2005-12-20 2006-12-06 A method and an arrangement for monitoring the functioning of a sensor or an exhaust gas aftertreatment system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE0502822A SE529410C2 (sv) 2005-12-20 2005-12-20 Förfarande och inrättning för övervakning av funktionen hos en sensor eller system

Publications (2)

Publication Number Publication Date
SE0502822L true SE0502822L (sv) 2007-06-21
SE529410C2 SE529410C2 (sv) 2007-08-07

Family

ID=38188942

Family Applications (1)

Application Number Title Priority Date Filing Date
SE0502822A SE529410C2 (sv) 2005-12-20 2005-12-20 Förfarande och inrättning för övervakning av funktionen hos en sensor eller system

Country Status (7)

Country Link
US (1) US7680587B2 (sv)
EP (1) EP1969215A1 (sv)
JP (1) JP2009520155A (sv)
CN (1) CN101341315A (sv)
BR (1) BRPI0620226A2 (sv)
SE (1) SE529410C2 (sv)
WO (1) WO2007073324A1 (sv)

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WO2007070730A2 (en) * 2005-11-04 2007-06-21 Southwest Research Institute Fuel deposit testing using burner-based exhaust flow simulation system
DE102008040737A1 (de) * 2008-07-25 2010-01-28 Robert Bosch Gmbh Verfahren und Vorrichtung zur Dynamiküberwachung einer Breitband-Lambdasonde
JP4692911B2 (ja) * 2008-09-18 2011-06-01 トヨタ自動車株式会社 ＮＯｘセンサの出力較正装置及び出力較正方法
US8590290B2 (en) 2009-09-01 2013-11-26 Cummins Inc. Methods, systems, and apparatuses of SCR diagnostics
US8504278B2 (en) * 2009-10-29 2013-08-06 GM Global Technology Operations LLC Method and system for detecting a fault during catalyst light-off
US20130228150A1 (en) * 2009-12-14 2013-09-05 Gotek Energy, Inc. Rotary, Internal Combustion Engine
US8733317B2 (en) * 2009-12-14 2014-05-27 Gotek Energy, Inc. Rotary, internal combustion engine
SE534678C2 (sv) * 2010-03-23 2011-11-15 Scania Cv Abp Metod för adaption av en massflödesgivare
SE534845C2 (sv) * 2010-05-28 2012-01-17 Scania Cv Abp Metod och system för adaption av en gassensor som är anordnad i en avgasledning
SE534846C2 (sv) * 2010-05-28 2012-01-17 Scania Cv Ab Metod och system för adaption av en elektrokemisk gassensor som är anordnad i en avgasledning
US8510024B2 (en) * 2010-09-09 2013-08-13 GM Global Technology Operations LLC Model-based diagnostic method and system for a selective reduction catalyst device in a vehicle
DE102010037431A1 (de) * 2010-09-09 2012-03-15 Ford Global Technologies, Llc. Verfahren zum Anpassen einer exothermen Reaktion im Abgassystem eines Kraftfahrzeugs
KR101305632B1 (ko) * 2011-09-21 2013-09-09 기아자동차주식회사 배기정화장치의 피독감지시스템 및 감지방법
CN103256100B (zh) * 2013-05-23 2017-02-08 无锡伊佩克科技有限公司 一种汽车尾气自检净化***
US9388728B2 (en) * 2013-06-10 2016-07-12 Cummins Emission Solutions, Inc. Systems and methods for NOx sensor diagnostics
US10109118B2 (en) 2013-10-04 2018-10-23 Volvo Truck Corporation Method for monitoring the operation of a sensor
AT513791B1 (de) * 2014-04-25 2016-05-15 Avl List Gmbh Partikelmessgerät und ein Verfahren zum Betreiben des Partikelmessgerätes
JP6404030B2 (ja) * 2014-08-12 2018-10-10 株式会社堀場製作所 排ガス測定用情報処理装置、排ガス測定システム及びプログラム
US9617940B2 (en) * 2014-08-14 2017-04-11 General Electric Company Engine diagnostic system and an associated method thereof
WO2016175226A1 (ja) * 2015-04-28 2016-11-03 ヤマハ発動機株式会社 鞍乗型車両
DE102015224935B4 (de) 2015-12-11 2017-12-14 Continental Automotive Gmbh Verfahren, Vorrichtung und System zum Betreiben eines Stickoxidsensors
DE102016225756A1 (de) * 2016-12-21 2018-06-21 Robert Bosch Gmbh Verfahren zur Diagnose eines Qualitätssignals, Steuergerät, Steuergerät-Programm und Steuergerät-Programmprodukt
SE540695C2 (sv) 2017-02-20 2018-10-16 Scania Cv Ab A system and a method for determining a correct or incorrectposition of a temperature sensor of an emission control sys tem
DE102017202778A1 (de) * 2017-02-21 2018-08-23 BSH Hausgeräte GmbH Gargerät mit einer Aufnahme für ein entnehmbar ausgebildetes Sensormodul
CN107091143A (zh) * 2017-06-15 2017-08-25 无锡威孚力达催化净化器有限责任公司 一种柴油机后处理温度信号的监控方法、监控装置及***
CN107703916B (zh) * 2017-09-30 2019-06-07 英特尔产品（成都）有限公司 电子压力调节器诊断***及方法
CN111001275B (zh) * 2018-10-08 2021-12-07 上海洁鹿环保科技有限公司 废气处理***数据处理方法、装置、及可存储介质
US11346264B2 (en) * 2019-08-29 2022-05-31 Cummins Emission Solutions Inc. Systems and methods for controlling exhaust gas aftertreatment sensor systems
CN111473977B (zh) * 2020-03-11 2021-11-23 中汽研汽车检验中心（天津）有限公司 一种车载终端scr出入口温度数据一致性的测试方法
CN115059532B (zh) * 2022-07-14 2023-05-12 东风商用车有限公司 颗粒捕集器载体孔道损坏诊断方法

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DE4304144C2 (de) * 1993-02-11 2000-01-05 Audi Ag Abgas-Nachbehandlungseinrichtung für eine Brennkraftmaschine
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JP3239698B2 (ja) 1995-07-25 2001-12-17 トヨタ自動車株式会社 内燃機関の触媒劣化判定装置
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US6453663B1 (en) * 2001-08-16 2002-09-24 Ford Global Technologies, Inc NOx sensor monitoring
SE526488C2 (sv) 2003-06-10 2005-09-27 Scania Cv Abp Förfarande och anordning för övervakning av en SCR-katalysator där uppmätta och beräknade temperaturvärden jämförs

Also Published As

Publication number Publication date
CN101341315A (zh) 2009-01-07
WO2007073324A1 (en) 2007-06-28
BRPI0620226A2 (pt) 2011-11-01
US7680587B2 (en) 2010-03-16
EP1969215A1 (en) 2008-09-17
SE529410C2 (sv) 2007-08-07
US20080295489A1 (en) 2008-12-04
JP2009520155A (ja) 2009-05-21

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