JP4718613B2 - 排気後処理システムの診断方法 - Google Patents
排気後処理システムの診断方法 Download PDFInfo
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- JP4718613B2 JP4718613B2 JP2008533286A JP2008533286A JP4718613B2 JP 4718613 B2 JP4718613 B2 JP 4718613B2 JP 2008533286 A JP2008533286 A JP 2008533286A JP 2008533286 A JP2008533286 A JP 2008533286A JP 4718613 B2 JP4718613 B2 JP 4718613B2
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- nox sensor
- mass flow
- scr
- nox
- sensor value
- Prior art date
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- 238000002405 diagnostic procedure Methods 0.000 title claims description 9
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 claims description 136
- 239000003054 catalyst Substances 0.000 claims description 27
- 238000002347 injection Methods 0.000 claims description 15
- 239000007924 injection Substances 0.000 claims description 15
- 239000003638 chemical reducing agent Substances 0.000 claims description 11
- 239000007789 gas Substances 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 6
- 238000010531 catalytic reduction reaction Methods 0.000 claims description 5
- 238000002485 combustion reaction Methods 0.000 claims description 5
- 238000000746 purification Methods 0.000 claims description 4
- 238000011144 upstream manufacturing Methods 0.000 claims description 4
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 26
- 239000004202 carbamide Substances 0.000 description 26
- 238000006243 chemical reaction Methods 0.000 description 8
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 6
- 230000007547 defect Effects 0.000 description 5
- 238000003745 diagnosis Methods 0.000 description 5
- 229910021529 ammonia Inorganic materials 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 230000002950 deficient Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000009849 deactivation Effects 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000006722 reduction reaction Methods 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 229910021536 Zeolite Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000010953 base metal Substances 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- WTHDKMILWLGDKL-UHFFFAOYSA-N urea;hydrate Chemical compound O.NC(N)=O WTHDKMILWLGDKL-UHFFFAOYSA-N 0.000 description 1
- 239000010457 zeolite Substances 0.000 description 1
Images
Classifications
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- 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)
Description
a)所望の排気管NOx濃度
b)現在の触媒活性に対して最小限の排気管NOx濃度
の最低限の排気管NOxをもたらすように制御することである。
A)NOx濃度_標準尿素≧NOx濃度_増加尿素→尿素注入システムが閉塞している。
B)NOx濃度_標準尿素<NOx濃度_増加尿素→SCR触媒が不活性化している。
Claims (2)
- 内燃機関(10)の排ガス流路(14)内でNOx(窒素酸化物)の還元を行う選択接触還元(SCR)後処理システムの不良の原因を検査および診断するための診断方法であって、該SCRシステムは、SCR触媒(12)の上流の排気に流動還元剤を注入する注入システム(16)と、該SCR反応装置の下流の排気内のNOx排出を管理するための下流側NOxセンサ(18)とからなり、
該機関のトルク範囲および速度範囲を所定区間に設定して、該流動還元剤の質量流量をこの区間の標準的なレベルに調節する段階と;
前記質量流量レベルに対する平均NOxセンサ値を測定して登録する段階と;
該流動還元剤の質量流量を前記区間に対する標準よりも高いレベルに増加する段階と;
前記高い質量流量レベルに関連した別の平均NOxセンサ値を測定して登録する段階と;
該2つの登録されたNOxセンサ値を比較して、標準質量流量に対する平均NOxセンサ値が増加した質量流量に対する別の平均NOxセンサ値よりも高い場合は流動還元剤を注入する注入システム(16)が閉塞していることを、または標準質量流量に対する平均NOxセンサ値が増加した質量流量に対する別の平均NOxセンサ値よりも低い場合はSCR触媒(12)が不活性化していることを判断する段階とからなる、診断方法。 - 浄化触媒(13)が前記後処理システム内で前記SCR触媒(12)と前記NOxセンサ(18)の間に配置される、請求項1に記載の方法。
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 |
---|---|
JP2009510324A JP2009510324A (ja) | 2009-03-12 |
JP4718613B2 true JP4718613B2 (ja) | 2011-07-06 |
Family
ID=37900046
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2008533286A Expired - Fee Related JP4718613B2 (ja) | 2005-09-29 | 2005-09-29 | 排気後処理システムの診断方法 |
Country Status (6)
Country | Link |
---|---|
US (1) | US7854161B2 (ja) |
EP (1) | EP1931865B1 (ja) |
JP (1) | JP4718613B2 (ja) |
CN (1) | CN100587235C (ja) |
BR (1) | BRPI0520558A2 (ja) |
WO (1) | WO2007037730A1 (ja) |
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DE102007037569B4 (de) | 2007-08-09 | 2020-01-16 | Daimler Ag | Verfahren zum Prüfen eines Abgasnachbehandlungssystems |
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2005
- 2005-09-29 US US12/088,712 patent/US7854161B2/en not_active Expired - Fee Related
- 2005-09-29 JP JP2008533286A patent/JP4718613B2/ja not_active Expired - Fee Related
- 2005-09-29 CN CN200580051738A patent/CN100587235C/zh not_active Expired - Fee Related
- 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 EP EP05788533.7A patent/EP1931865B1/en not_active Not-in-force
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JP2000297704A (ja) * | 1999-04-12 | 2000-10-24 | Toyota Motor Corp | 内燃機関の排気浄化装置 |
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JP2009510324A (ja) | 2009-03-12 |
EP1931865B1 (en) | 2013-11-13 |
CN101278110A (zh) | 2008-10-01 |
US20090049899A1 (en) | 2009-02-26 |
EP1931865A1 (en) | 2008-06-18 |
CN100587235C (zh) | 2010-02-03 |
WO2007037730A1 (en) | 2007-04-05 |
EP1931865A4 (en) | 2010-10-06 |
US7854161B2 (en) | 2010-12-21 |
BRPI0520558A2 (pt) | 2009-05-12 |
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