ATE459407T1 - System und verfahren zur selektiven steuerung einer katalytischen reduktion - Google Patents

System und verfahren zur selektiven steuerung einer katalytischen reduktion

Info

Publication number
ATE459407T1
ATE459407T1 AT07253090T AT07253090T ATE459407T1 AT E459407 T1 ATE459407 T1 AT E459407T1 AT 07253090 T AT07253090 T AT 07253090T AT 07253090 T AT07253090 T AT 07253090T AT E459407 T1 ATE459407 T1 AT E459407T1
Authority
AT
Austria
Prior art keywords
scr catalyst
stored
catalytic reduction
value
selective control
Prior art date
Application number
AT07253090T
Other languages
English (en)
Inventor
Michael Parmentier
Julien Schmitt
Original Assignee
Delphi Tech Inc
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 Delphi Tech Inc filed Critical Delphi Tech Inc
Application granted granted Critical
Publication of ATE459407T1 publication Critical patent/ATE459407T1/de

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86—Catalytic processes
    • B01D53/90—Injecting reactants
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
    • B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
    • B01D53/9404—Removing only nitrogen compounds
    • B01D53/9409—Nitrogen oxides
    • B01D53/9431—Processes characterised by a specific device
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
    • B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
    • B01D53/9495—Controlling the catalytic process
    • 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
    • F01N3/206—Adding periodically or continuously substances to exhaust gases for promoting purification, e.g. catalytic material in liquid form, NOx reducing agents
    • F01N3/208—Control of selective catalytic reduction [SCR], e.g. by adjusting the dosing of reducing agent
    • 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
    • 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
    • F01N2560/021—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics the means being an exhaust gas sensor for measuring or detecting ammonia NH3
    • 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
    • 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
    • F01N2900/00—Details of electrical control or of the monitoring of the exhaust gas treating apparatus
    • F01N2900/06—Parameters used for exhaust control or diagnosing
    • F01N2900/08—Parameters used for exhaust control or diagnosing said parameters being related to the engine
    • 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
    • F01N2900/00—Details of electrical control or of the monitoring of the exhaust gas treating apparatus
    • F01N2900/06—Parameters used for exhaust control or diagnosing
    • F01N2900/16—Parameters used for exhaust control or diagnosing said parameters being related to the exhaust apparatus, e.g. particulate filter or catalyst
    • F01N2900/1602—Temperature of exhaust gas 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
    • F01N2900/00—Details of electrical control or of the monitoring of the exhaust gas treating apparatus
    • F01N2900/06—Parameters used for exhaust control or diagnosing
    • F01N2900/16—Parameters used for exhaust control or diagnosing said parameters being related to the exhaust apparatus, e.g. particulate filter or catalyst
    • F01N2900/1616—NH3-slip from catalyst
    • 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
    • F01N2900/00—Details of electrical control or of the monitoring of the exhaust gas treating apparatus
    • F01N2900/06—Parameters used for exhaust control or diagnosing
    • F01N2900/16—Parameters used for exhaust control or diagnosing said parameters being related to the exhaust apparatus, e.g. particulate filter or catalyst
    • F01N2900/1621—Catalyst conversion efficiency
    • 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
    • F01N2900/00—Details of electrical control or of the monitoring of the exhaust gas treating apparatus
    • F01N2900/06—Parameters used for exhaust control or diagnosing
    • F01N2900/16—Parameters used for exhaust control or diagnosing said parameters being related to the exhaust apparatus, e.g. particulate filter or catalyst
    • F01N2900/1622—Catalyst reducing agent absorption capacity or consumption amount
    • 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)
  • Chemical Kinetics & Catalysis (AREA)
  • Analytical Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Environmental & Geological Engineering (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • General Chemical & Material Sciences (AREA)
  • Biomedical Technology (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Toxicology (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Catalysts (AREA)
AT07253090T 2007-07-31 2007-07-31 System und verfahren zur selektiven steuerung einer katalytischen reduktion ATE459407T1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP07253090A EP2025388B8 (de) 2007-07-31 2007-07-31 System und Verfahren zur selektiven Steuerung einer katalytischen Reduktion

Publications (1)

Publication Number Publication Date
ATE459407T1 true ATE459407T1 (de) 2010-03-15

Family

ID=38956365

Family Applications (1)

Application Number Title Priority Date Filing Date
AT07253090T ATE459407T1 (de) 2007-07-31 2007-07-31 System und verfahren zur selektiven steuerung einer katalytischen reduktion

Country Status (4)

Country Link
EP (1) EP2025388B8 (de)
AT (1) ATE459407T1 (de)
DE (1) DE602007005125D1 (de)
WO (1) WO2009024622A2 (de)

Families Citing this family (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE533790C2 (sv) * 2009-05-29 2011-01-11 Scania Cv Ab Förfarande och system för styrning av insprutningen av reduktionsmedel uppströms en SCR-katalysator
JP5398372B2 (ja) * 2009-06-18 2014-01-29 Ｕｄトラックス株式会社 エンジンの排気浄化装置
EP2339136B1 (de) * 2009-12-23 2013-08-21 FPT Motorenforschung AG Verfahren und Vorrichtung zur Steuerung eines SCR-Katalysatorwandlers eines Fahrzeugs
WO2011082401A2 (en) 2010-01-01 2011-07-07 Cummins Intellectual Properties, Inc. Engine and exhaust aftertreatment control
SE534479C2 (sv) * 2010-01-27 2011-09-06 Scania Cv Ab Skattning av en avvikelse för åtminstone en modellvariabel hos en katalysatormodell
DE102010060099A1 (de) * 2010-10-21 2012-04-26 Ford Global Technologies, Llc. Verfahren zum Anpassen eines SCR Katalysators in einem Abgassystem eines Kraftfahrzeugs
DE102011103346B4 (de) 2011-02-16 2014-06-26 Mtu Friedrichshafen Gmbh Verfahren zur modellbasierten Bestimmung der Temperaturverteilung einer Abgasnachbehandlungseinheit
WO2013190659A1 (ja) * 2012-06-20 2013-12-27 トヨタ自動車株式会社 内燃機関の排気浄化装置
RU2606468C1 (ru) * 2012-12-13 2017-01-10 Тойота Дзидося Кабусики Кайся Устройство диагностики неисправностей устройства управления выхлопными газами
US9512764B2 (en) 2013-07-11 2016-12-06 Ford Global Technologies, Llc Ammonia storage management for SCR catalyst
JP6330444B2 (ja) * 2014-04-16 2018-05-30 いすゞ自動車株式会社 排気浄化システム
DE102015216656A1 (de) * 2015-09-01 2017-03-02 Bayerische Motoren Werke Aktiengesellschaft Verfahren zum Betrieb einer Abgasreinigungsanlage
CN105370354B (zh) * 2015-12-11 2018-03-27 中国北方发动机研究所(天津) 一种柴油机scr后处理稳态前馈控制方法
KR102227454B1 (ko) * 2016-12-08 2021-03-15 스카니아 씨브이 악티에볼라그 암모니아 피복 정도 프로파일 제어 시스템 및 방법
FR3066542B1 (fr) * 2017-05-16 2021-04-02 Renault Sas Procede de traitement des oxydes d'azote a l'echappement d'un moteur a combustion interne et dispositif associe
WO2019019046A1 (zh) * 2017-07-26 2019-01-31 罗伯特·博世有限公司 用于控制发动机中的scr尿素喷射系统的喷射量的方法及装置
FR3076854A1 (fr) * 2018-01-12 2019-07-19 Psa Automobiles Sa Procede de controle d’un systeme de reduction selective catalytique
CN109236427B (zh) * 2018-09-14 2020-11-03 国家能源投资集团有限责任公司 Scr系统的喷氨控制方法和装置、存储介质、处理器
GB2589150B (en) * 2019-11-25 2022-02-23 Delphi Automotive Systems Lux Dual SCR system control method
CN111828150B (zh) * 2020-07-16 2021-08-17 一汽解放汽车有限公司 一种发动机后处理器尿素喷射的控制方法
CN112903272B (zh) * 2021-01-25 2024-02-27 凯龙高科技股份有限公司 一种scr催化剂nh3存储校准试验装置及方法
CN113648830B (zh) * 2021-02-26 2022-07-01 齐鲁工业大学 一种大截面燃煤烟气流速测量及scr系统氨定量方法
CN115045738B (zh) * 2022-05-09 2023-11-17 潍柴动力股份有限公司 尿素喷射系统的控制方法、装置、处理器和尿素喷射系统
DE102022128485A1 (de) * 2022-10-27 2024-05-02 Volkswagen Aktiengesellschaft Verfahren zum Betreiben eines Abgasnachbehandlungssystems sowie Abgasnachbehandlungssystem
EP4382731B1 (de) * 2022-12-05 2025-11-19 Volvo Truck Corporation Nachbehandlungssystem
DE102022213338B4 (de) * 2022-12-09 2024-10-02 Audi Aktiengesellschaft Verfahren zum Betreiben einer Antriebseinrichtung sowie entsprechende Antriebseinrichtung
CN115903513B (zh) * 2022-12-09 2025-08-29 北京工商大学 基于改进非线性自抗扰的汽车尾气scr控制系统设计方法
CN117588291B (zh) * 2024-01-18 2024-04-09 中汽研汽车检验中心（天津）有限公司 一种尿素品质在线监测方法
CN118640082B (zh) * 2024-08-16 2024-11-29 潍柴动力股份有限公司 一种scr系统的控制方法以及控制装置

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6993900B2 (en) * 2002-10-21 2006-02-07 Ford Global Technologies, Llc Exhaust gas aftertreatment systems
US7093427B2 (en) * 2002-11-21 2006-08-22 Ford Global Technologies, Llc Exhaust gas aftertreatment systems
SE526404C2 (sv) * 2004-01-20 2005-09-06 Scania Cv Abp Förfarande och anordning för styrning av insprutning av reduktionsmedel
DE102004031624A1 (de) * 2004-06-30 2006-02-02 Robert Bosch Gmbh Verfahren zum Betreiben eines zur Reinigung des Abgases einer Brennkraftmaschine verwendeten Katalysators und Vorrichtung zur Durchführung des Verfahrens
DE102005012568A1 (de) 2005-03-18 2006-09-21 Daimlerchrysler Ag Vorrichtung zur Entfernung von Stickoxiden aus Brennkraftmaschinenabgas und Verfahren zur Dosierung eines Zuschlagstoffs für Brennkraftmaschinenabgas
US20070137181A1 (en) * 2005-12-16 2007-06-21 Devesh Upadhyay Exhaust gas aftertreatment systems

Also Published As

Publication number Publication date
EP2025388B1 (de) 2010-03-03
WO2009024622A3 (en) 2009-06-04
EP2025388B8 (de) 2010-05-12
WO2009024622A2 (en) 2009-02-26
WO2009024622A8 (en) 2010-03-11
EP2025388A1 (de) 2009-02-18
DE602007005125D1 (de) 2010-04-15

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