WO2009071994A3 - Abnormality detection system and abnormality detection method for internal combustion engine - Google Patents

Abnormality detection system and abnormality detection method for internal combustion engine Download PDF

Info

Publication number
WO2009071994A3
WO2009071994A3 PCT/IB2008/003681 IB2008003681W WO2009071994A3 WO 2009071994 A3 WO2009071994 A3 WO 2009071994A3 IB 2008003681 W IB2008003681 W IB 2008003681W WO 2009071994 A3 WO2009071994 A3 WO 2009071994A3
Authority
WO
WIPO (PCT)
Prior art keywords
abnormality detection
nox
region
removal efficiency
combustion engine
Prior art date
Application number
PCT/IB2008/003681
Other languages
French (fr)
Other versions
WO2009071994A2 (en
Inventor
Taiga Hagimoto
Hiroshi Sawada
Daisuke Shibata
Original Assignee
Toyota Motor Co Ltd
Taiga Hagimoto
Hiroshi Sawada
Daisuke Shibata
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 Toyota Motor Co Ltd, Taiga Hagimoto, Hiroshi Sawada, Daisuke Shibata filed Critical Toyota Motor Co Ltd
Priority to BRPI0819893-4A priority Critical patent/BRPI0819893A2/en
Priority to KR1020097027468A priority patent/KR101051900B1/en
Priority to EP08856977A priority patent/EP2225443B1/en
Priority to CN2008801182052A priority patent/CN101878357B/en
Priority to DE602008006460T priority patent/DE602008006460D1/en
Priority to US12/674,445 priority patent/US8171723B2/en
Priority to AT08856977T priority patent/ATE506528T1/en
Publication of WO2009071994A2 publication Critical patent/WO2009071994A2/en
Publication of WO2009071994A3 publication Critical patent/WO2009071994A3/en

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
    • 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
    • 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
    • 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
    • F01N2550/00—Monitoring or diagnosing the deterioration of exhaust systems
    • F01N2550/03—Monitoring or diagnosing the deterioration of exhaust systems of sorbing activity of adsorbents or absorbents
    • 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
    • F01N2560/00—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics
    • F01N2560/06—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics the means being a temperature sensor
    • 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
    • F01N2570/00—Exhaust treating apparatus eliminating, absorbing or adsorbing specific elements or compounds
    • F01N2570/14—Nitrogen oxides
    • 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
    • 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)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)
  • Automobile Manufacture Line, Endless Track Vehicle, Trailer (AREA)
  • Testing Of Engines (AREA)

Abstract

When the NOx SCR catalyst (15) deteriorates, the NOx removal efficiency increases with an increase in the catalyst temperature as indicated by the curves B1 and B2. When there is an irregularity in the amount or quality of aqueous urea solution that is supplied to the NOx SCR catalyst, the NOx removal efficiency decreases at a constant rate as indicated by the curve C. When the NOx removal efficiency is first within the region X2 and then brought into the region Y1, it is determined that the NOx SCR catalyst deteriorates. When the NOx removal efficiency is first within the region X2 and then brought into the region Y2, it is determined that there is an irregularity in the amount or quality of the aqueous urea solution that is supplied to the NOx SCR catalyst.
PCT/IB2008/003681 2007-12-06 2008-12-04 Abnormality detection system and abnormality detection method for internal combustion engine WO2009071994A2 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
BRPI0819893-4A BRPI0819893A2 (en) 2007-12-06 2008-12-04 Anomaly detection system and anomaly detection method for internal combustion engine
KR1020097027468A KR101051900B1 (en) 2007-12-06 2008-12-04 Abnormality detection system and abnormality detection method of internal combustion engine
EP08856977A EP2225443B1 (en) 2007-12-06 2008-12-04 Abnormality detection system and abnormality detection method for internal combustion engine
CN2008801182052A CN101878357B (en) 2007-12-06 2008-12-04 Abnormality detection system and abnormality detection method for internal combustion engine
DE602008006460T DE602008006460D1 (en) 2007-12-06 2008-12-04 SYSTEM FOR DETECTING ANOMALIES AND METHOD FOR DETECTING ANOMALIES FOR A COMBUSTION ENGINE
US12/674,445 US8171723B2 (en) 2007-12-06 2008-12-04 Abnormality detection system and abnormality detection method for internal combustion engine
AT08856977T ATE506528T1 (en) 2007-12-06 2008-12-04 ANOMAL DETECTION SYSTEM AND ANOMAL DETECTION METHOD FOR AN INTERNAL COMBUSTION ENGINE

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007315899A JP4412399B2 (en) 2007-12-06 2007-12-06 Abnormality detection device for internal combustion engine
JP2007-315899 2007-12-06

Publications (2)

Publication Number Publication Date
WO2009071994A2 WO2009071994A2 (en) 2009-06-11
WO2009071994A3 true WO2009071994A3 (en) 2009-07-23

Family

ID=40601502

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2008/003681 WO2009071994A2 (en) 2007-12-06 2008-12-04 Abnormality detection system and abnormality detection method for internal combustion engine

Country Status (11)

Country Link
US (1) US8171723B2 (en)
EP (1) EP2225443B1 (en)
JP (1) JP4412399B2 (en)
KR (1) KR101051900B1 (en)
CN (1) CN101878357B (en)
AT (1) ATE506528T1 (en)
BR (1) BRPI0819893A2 (en)
DE (1) DE602008006460D1 (en)
ES (1) ES2363658T3 (en)
RU (1) RU2441989C1 (en)
WO (1) WO2009071994A2 (en)

Families Citing this family (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
DE102009007765A1 (en) * 2009-02-06 2010-08-12 Daimler Ag Method for operating an internal combustion engine with an exhaust gas purification system comprising an SCR catalytic converter
JP5478110B2 (en) 2009-04-30 2014-04-23 日野自動車株式会社 Reducing agent abnormality detection method
US8205440B2 (en) * 2009-09-14 2012-06-26 GM Global Technology Operations LLC Intrusive SCR efficency testing systems and methods for vehicles with low temperature exhaust gas
US8863504B2 (en) 2009-09-30 2014-10-21 Cummins Inc. System, method, and apparatus for determining aftertreatment fluid quality
JP4875744B2 (en) 2009-12-09 2012-02-15 本田技研工業株式会社 Catalyst degradation judgment device for exhaust purification system
DE112010005244T5 (en) * 2010-02-09 2012-11-15 Honda Motor Co., Ltd. Emission cleaning device
US8353202B2 (en) * 2010-08-12 2013-01-15 GM Global Technology Operations LLC Exhaust diagnostic systems and methods with SCR conversion efficiency monitor disabling
BR112013025858B1 (en) 2011-04-05 2021-03-09 Cummins Emisson Solutions Inc system and method for monitoring post-treatment system
CN103703221B (en) * 2011-04-12 2016-03-16 丰田自动车株式会社 The deterioration detecting apparatus of selective reduction type NOx catalyst
US20130152545A1 (en) * 2011-12-14 2013-06-20 Caterpillar Inc. Diesel eission fluid quality detection system and method
WO2014002866A1 (en) * 2012-06-28 2014-01-03 ボッシュ株式会社 Abnormality diagnosis device, and exhaust purification device of internal combustion engine
EP2930325B1 (en) * 2012-12-06 2017-08-23 Toyota Jidosha Kabushiki Kaisha Failure determination system of exhaust gas purification apparatus
US9273587B2 (en) 2013-01-28 2016-03-01 Cummins Ip, Inc. Method, system, and apparatus for diagnosing an exhaust aftertreatment component
US9109488B2 (en) 2013-03-15 2015-08-18 Cummins Ip, Inc. Method, system, and apparatus for diagnosing an exhaust aftertreatment component
JP6087866B2 (en) * 2014-05-23 2017-03-01 トヨタ自動車株式会社 Exhaust gas purification device abnormality diagnosis device
GB2529183B (en) * 2014-08-12 2018-04-04 Jaguar Land Rover Ltd Engine exhaust system and control system for an engine exhaust system
US9422847B2 (en) * 2014-12-30 2016-08-23 Cummins, Inc. System and method of isolating component failures in an exhaust aftertreatment system
CN105156185B (en) * 2015-06-23 2019-01-22 北京理工大学 A kind of on-line monitoring method of SCR catalysis reaction chamber aging
GB2548931B (en) * 2016-01-27 2021-09-08 Cummins Inc Exhaust aftertreatment thermal management controls
DE102018203757A1 (en) * 2017-04-25 2018-10-25 Robert Bosch Gmbh Method for operating an SCR system with at least two metering valves
KR102089980B1 (en) 2017-09-14 2020-03-17 산 조경 주식회사 Planting mat and method for green plantin by Ecomat
KR102069672B1 (en) 2017-09-14 2020-01-23 주식회사 해성 Structure for preventing erosion
KR102013252B1 (en) 2017-09-14 2019-08-22 산 조경 주식회사 Block for preventing erosion
US10634032B2 (en) * 2017-12-15 2020-04-28 GM Global Technology Operations LLC Method and apparatus for monitoring an exhaust aftertreatment system for an internal combustion engine
JP6729542B2 (en) * 2017-12-27 2020-07-22 トヨタ自動車株式会社 Exhaust purification device abnormality diagnosis system
CN110541745B (en) * 2019-09-20 2020-12-22 潍柴动力股份有限公司 Abnormity positioning method and device and electronic control unit
CN112539103B (en) * 2020-11-30 2022-01-25 潍柴动力股份有限公司 Method and system for monitoring urea quality
US11519350B2 (en) * 2020-12-09 2022-12-06 Cummins Inc. Systems and methods for cold operation NOx burden reduction
KR20220170058A (en) 2021-06-22 2022-12-29 주식회사 해성 Core Net

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004176719A (en) * 2002-11-25 2004-06-24 Robert Bosch Gmbh Method and apparatus for monitoring exhaust gas after-treatment system
US20050287034A1 (en) * 2004-06-24 2005-12-29 Wills J S System for diagnosing reagent solution quality and emissions catalyst degradation
EP1767754A1 (en) * 2004-06-17 2007-03-28 Hino Motors, Ltd. Exhaust gas purification apparatus

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4315278A1 (en) 1993-05-07 1994-11-10 Siemens Ag Method and device for metering a reducing agent into a nitrogen-containing exhaust gas
JP3082523B2 (en) 1993-08-09 2000-08-28 日産自動車株式会社 Catalyst deterioration diagnosis device for internal combustion engine
JP3799770B2 (en) 1997-09-18 2006-07-19 トヨタ自動車株式会社 Catalyst deterioration diagnosis device for internal combustion engine
JP3826515B2 (en) 1997-10-14 2006-09-27 トヨタ自動車株式会社 Catalyst deterioration diagnosis device for internal combustion engine
JP4161609B2 (en) * 2002-04-23 2008-10-08 三菱ふそうトラック・バス株式会社 Exhaust gas purification device for internal combustion engine
JP4267534B2 (en) * 2004-07-23 2009-05-27 日野自動車株式会社 Abnormality detection method for exhaust purification system
JP4290109B2 (en) 2004-10-29 2009-07-01 日産ディーゼル工業株式会社 Exhaust purification equipment
JP3714559B1 (en) 2004-11-05 2005-11-09 日産ディーゼル工業株式会社 Exhaust purification device
JP2006242094A (en) 2005-03-03 2006-09-14 Hino Motors Ltd Exhaust emission control device
DE102005014662A1 (en) 2005-03-31 2006-12-21 Robert Bosch Gmbh Method for operating an internal combustion engine and device for carrying out the method
JP4710868B2 (en) * 2007-04-25 2011-06-29 トヨタ自動車株式会社 Exhaust gas purification device for internal combustion engine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004176719A (en) * 2002-11-25 2004-06-24 Robert Bosch Gmbh Method and apparatus for monitoring exhaust gas after-treatment system
EP1767754A1 (en) * 2004-06-17 2007-03-28 Hino Motors, Ltd. Exhaust gas purification apparatus
US20050287034A1 (en) * 2004-06-24 2005-12-29 Wills J S System for diagnosing reagent solution quality and emissions catalyst degradation

Also Published As

Publication number Publication date
US8171723B2 (en) 2012-05-08
EP2225443B1 (en) 2011-04-20
BRPI0819893A2 (en) 2015-05-19
KR20100022092A (en) 2010-02-26
KR101051900B1 (en) 2011-07-26
EP2225443A2 (en) 2010-09-08
ES2363658T3 (en) 2011-08-11
US20110146235A1 (en) 2011-06-23
JP4412399B2 (en) 2010-02-10
CN101878357A (en) 2010-11-03
RU2441989C1 (en) 2012-02-10
WO2009071994A2 (en) 2009-06-11
JP2009138626A (en) 2009-06-25
CN101878357B (en) 2012-03-21
ATE506528T1 (en) 2011-05-15
DE602008006460D1 (en) 2011-06-01

Similar Documents

Publication Publication Date Title
WO2009071994A3 (en) Abnormality detection system and abnormality detection method for internal combustion engine
WO2009135021A3 (en) Apparatus, system, and method for reducing nox emissions on an scr catalyst
MX2013001990A (en) Method and devices for heating urea-containing materials in vehicle emission control system.
WO2009135016A3 (en) Apparatus, system, and method for reducing nox emissions on an scr catalyst
WO2011139631A3 (en) Scr catalyst ammonia surface coverage estimation and control
WO2009031030A3 (en) Exhaust emission control system of internal combustion engine and exhaust emission control method
WO2008045499A3 (en) Dual injector system for diesel emissions control
WO2009135010A3 (en) Apparatus, system, and method for controlling ammonia slip from an scr catalyst
WO2013004629A3 (en) Ammonia gas generator and method for producing ammonia in order to reduce nitrogen oxides in exhaust gases
WO2009135014A3 (en) Apparatus, system, and method for reducing nox emissions on an scr catalyst using ammonia storage and slip control
WO2008012653A3 (en) Optimal fuel profiles
WO2011032020A3 (en) Low temperature selective catalytic reduction catalyst and associated systems and methods
GB201010627D0 (en) Method for the determination of a NOx concentration value upstream of a SCR catalyst in a diesel engine
WO2009134831A3 (en) Passive ammonia-selective catalytic reduction for nox control in ineternal combustion engines
WO2009135060A3 (en) Apparatus, system, and method for reducing nox emissions on an scr catalyst
WO2009024622A3 (en) System and method for selective catalytic reduction control
WO2006121993A3 (en) Method and apparatus for selective catalytic reduction of nox
WO2010053505A3 (en) Flex fuel internal combustion engine system
EP2554816A3 (en) NH3 emissions management in a nox reduction system
EP2126306A4 (en) On-board-diagnosis method for an exhaust aftertreatment system and on-board-diagnosis system for an exhaust aftertreatment system
WO2012128721A3 (en) Systems and methods for exhaust gas cleaning and/or ballast water treatment
MY157391A (en) Selective catalytic reduction via electrolysis of urea
EP1698769A3 (en) Method and device for supply of additive for exhaust gas cleaning
EP2505803A3 (en) Compression ignition engine system with diesel particulate filter coated with nox reduction catalyst and stable method of operation
WO2008078645A1 (en) Exhaust purifying apparatus for internal combustion engine

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 200880118205.2

Country of ref document: CN

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 08856977

Country of ref document: EP

Kind code of ref document: A2

WWE Wipo information: entry into national phase

Ref document number: 7899/DELNP/2009

Country of ref document: IN

ENP Entry into the national phase

Ref document number: 20097027468

Country of ref document: KR

Kind code of ref document: A

WWE Wipo information: entry into national phase

Ref document number: 12674445

Country of ref document: US

WWE Wipo information: entry into national phase

Ref document number: 2008856977

Country of ref document: EP

NENP Non-entry into the national phase

Ref country code: DE

WWE Wipo information: entry into national phase

Ref document number: 2010122975

Country of ref document: RU

ENP Entry into the national phase

Ref document number: PI0819893

Country of ref document: BR

Kind code of ref document: A2

Effective date: 20100604