KR101500349B1 - Lnt촉매의 열화 감지장치 및 방법 - Google Patents
Lnt촉매의 열화 감지장치 및 방법 Download PDFInfo
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- KR101500349B1 KR101500349B1 KR1020090120090A KR20090120090A KR101500349B1 KR 101500349 B1 KR101500349 B1 KR 101500349B1 KR 1020090120090 A KR1020090120090 A KR 1020090120090A KR 20090120090 A KR20090120090 A KR 20090120090A KR 101500349 B1 KR101500349 B1 KR 101500349B1
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- reducing agent
- amount
- lnt catalyst
- lambda
- nox
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- 239000003054 catalyst Substances 0.000 title claims abstract description 115
- 230000006866 deterioration Effects 0.000 title claims abstract description 18
- 238000000034 method Methods 0.000 title claims abstract description 17
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 78
- 238000001514 detection method Methods 0.000 claims abstract 2
- 230000007257 malfunction Effects 0.000 claims 2
- 230000008929 regeneration Effects 0.000 abstract description 12
- 238000011069 regeneration method Methods 0.000 abstract description 12
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 10
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 5
- 238000012544 monitoring process Methods 0.000 abstract description 3
- 239000003795 chemical substances by application Substances 0.000 abstract 1
- 238000000746 purification Methods 0.000 description 8
- 230000033228 biological regulation Effects 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 3
- 239000000446 fuel Substances 0.000 description 3
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- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 230000001172 regenerating effect Effects 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 231100000572 poisoning Toxicity 0.000 description 1
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- 239000000376 reactant Substances 0.000 description 1
- 238000011946 reduction process Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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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
- 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
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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
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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
- 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
- F01N2560/025—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics the means being an exhaust gas sensor for measuring or detecting O2, e.g. lambda sensors
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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
- F01N2560/00—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics
- F01N2560/14—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics having more than one sensor of one kind
-
- 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
- F01N2900/04—Methods of control or diagnosing
- F01N2900/0416—Methods of control or diagnosing using the state of a sensor, e.g. of an exhaust gas sensor
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- 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
- Y02T10/40—Engine management systems
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- 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)
Abstract
Description
Claims (8)
- 희박모드에서 NOx를 흡장하고, NOx를 환원제와 반응시켜 NOx를 재생시키는 LNT촉매;LNT촉매 전/후단에 각각 장착되어 람다값을 검출하는 제1,2람다센서;상기 제1,2람다센서의 신호를 이용하여 NOx 환원에 소모된 환원제 양과 슬립되는 환원제 양을 검출하여 슬립비를 산출하고, 슬립비에 따라 LNT촉매의 열화 여부를 판정하는 제어부;를 포함하되,상기 제어부는 람다값(λ=1)에서 제2람다센서의 람다값을 차 연산하여 LNT촉매 후단으로 슬립되는 환원제의 양을 산출하고,제2람다센서의 람다값에서 제1람다센서의 람다값을 차 연산하여 LNT촉매에서 NOx의 환원에 소모된 환원제의 양을 산출하는 것을 특징으로 하는 LNT촉매의 열화 감지장치.
- 삭제
- 제1항에 있어서,상기 제어부는 환원제의 슬립량을 환원제의 공급량으로 나누어 슬립비를 산출하고, 슬립비가 설정된 임계값을 초과하면 LNT촉매를 열화로 판정하며, 슬립비가 설정된 임계값 미만이면 LNT촉매를 정상으로 판정하는 것을 특징으로 하는 LNT촉매의 열화 감지장치.
- LNT촉매에 흡장된 NOx를 환원시키는 운전모드에서 제1,2람다센서의 신호를 검출하는 과정;제1,2람다센서의 신호에서 NOx 환원에 소모된 환원제 양과 반응되지 않고 슬립되는 환원제 양을 검출하는 과정;상기 소모된 환원제 양과 슬립되는 환원제 양을 이용하여 환원제의 슬립비를 연산하는 과정;상기 연산된 환원제의 슬립비와 임계값을 비교하여 LNT촉매의 열화 여부를 진단하는 과정;을 포함하며,상기에서 NOx 환원에 소모된 환원제 양은 제2람다센서의 람다값에서 제1람다센서의 람다값을 차 연산하여 산출하는 것을 특징으로 하는 LNT촉매의 열화 감지방법.
- 삭제
- 제4항에 있어서,상기에서 NOx 환원에 소모되지 못하고 슬립되는 환원제 양은 람다값(λ=1)에 서 제2람다센서의 람다값을 차 연산하여 산출하는 것을 특징으로 하는 LNT촉매의 열화 감지방법.
- 제4항에 있어서,상기 슬립비는 환원제의 슬립량을 환원제의 공급량(소모량+슬립량)으로 나누어 산출하며, 슬립비가 임계값을 초과하면 LNT촉매를 열화로 판정하고, 슬립비가 임계값 미만이면 LNT촉매를 정상으로 판정하는 것을 특징으로 하는 LNT촉매의 열화 감지방법.
- 제4항에 있어서,상기 LNT촉매의 열화가 판정되면 고장 코드를 저장함과 동시에 표시수단을 통해 지시하는 것을 특징으로 하는 LNT촉매의 열화 감지방법.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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KR1020090120090A KR101500349B1 (ko) | 2009-12-04 | 2009-12-04 | Lnt촉매의 열화 감지장치 및 방법 |
Applications Claiming Priority (1)
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KR1020090120090A KR101500349B1 (ko) | 2009-12-04 | 2009-12-04 | Lnt촉매의 열화 감지장치 및 방법 |
Publications (2)
Publication Number | Publication Date |
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KR20110063140A KR20110063140A (ko) | 2011-06-10 |
KR101500349B1 true KR101500349B1 (ko) | 2015-03-10 |
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KR1020090120090A Expired - Fee Related KR101500349B1 (ko) | 2009-12-04 | 2009-12-04 | Lnt촉매의 열화 감지장치 및 방법 |
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Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102012218728B4 (de) * | 2012-01-02 | 2015-06-25 | Ford Global Technologies, Llc | Verfahren zur Überwachung eines Speicherkatalysators einer Brennkraftmaschine |
KR101406495B1 (ko) | 2012-12-17 | 2014-06-27 | 현대자동차주식회사 | 차량의 lnt 제어방법 |
JP6243620B2 (ja) * | 2012-12-18 | 2017-12-06 | 現代自動車株式会社Hyundai Motor Company | 車両のlnt制御方法 |
KR101567209B1 (ko) | 2014-04-24 | 2015-11-06 | 현대자동차주식회사 | 차량용 배기 후처리장치의 제어 방법 |
DE202014005514U1 (de) * | 2014-07-05 | 2015-10-06 | GM Global Technology Operations LLC (n. d. Ges. d. Staates Delaware) | Elektronisches Steuergerät für einen Verbrennungsmotor |
DE102015200769A1 (de) | 2015-01-20 | 2016-07-21 | Ford Global Technologies, Llc | Verfahren zur Überwachung einer Abgasnachbehandlungsanlage eines Kraftfahrzeugs mit einem hybridelektrischen Antrieb sowie Steuerungseinrichtung für einen hybridelektrischen Antrieb |
DE102016200158A1 (de) | 2015-01-20 | 2016-07-21 | Ford Global Technologies, Llc | Verfahren zur Überwachung einer Abgasnachbehandlungsanlage eines Verbrennungsmotors sowie Steuerungseinrichtung für eine Abgasnachbehandlungsanlage |
DE102015200751B4 (de) | 2015-01-20 | 2021-03-04 | Ford Global Technologies, Llc | Verfahren zur Überwachung einer Abgasnachbehandlungsanlage eines Verbrennungsmotors sowie Steuerungseinrichtung für eine Abgasnachbehandlungsanlage |
DE102016200155A1 (de) | 2015-01-20 | 2016-07-21 | Ford Global Technologies, Llc | Verfahren zur Überwachung einer Abgasnachbehandlungsanlage eines Verbrennungsmotors sowie Steuerungseinrichtung für eine Abgasnachbehandlungsanlage |
DE102015200762A1 (de) | 2015-01-20 | 2016-07-21 | Ford Global Technologies, Llc | Verfahren zur Überwachung einer Abgasnachbehandlungsanlage eines Verbrennungsmotors sowie Steuerungseinrichtung für eine Abgasnachbehandlungsanlage |
KR101683512B1 (ko) | 2015-03-30 | 2016-12-07 | 현대자동차 주식회사 | 린 녹스 트랩의 재생 시 환원되는 질소산화물의 양을 계산하는 방법 및 배기 가스 정화 장치 |
DE102018202458A1 (de) * | 2018-02-19 | 2019-08-22 | Robert Bosch Gmbh | Verfahren zur Überwachung eines Stickoxid-Speicherkatalysators |
DE102019200367B4 (de) | 2019-01-15 | 2025-03-27 | Ford Global Technologies, Llc | Verfahren zum Bestimmen von Regenerationsparameterwerten eines Mehrfach-LNT-Katalysatorsystems und Vorrichtung zur Datenverarbeitung |
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JP2004301103A (ja) * | 2003-04-01 | 2004-10-28 | Nissan Motor Co Ltd | 排気ガス浄化触媒の劣化診断装置 |
JP2008038738A (ja) * | 2006-08-04 | 2008-02-21 | Toyota Motor Corp | NOx触媒の劣化検出装置 |
KR100906880B1 (ko) * | 2008-03-31 | 2009-07-08 | 현대자동차주식회사 | 린 녹스 트랩의 촉매 효율 모니터링 방법 |
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- 2009-12-04 KR KR1020090120090A patent/KR101500349B1/ko not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2004301103A (ja) * | 2003-04-01 | 2004-10-28 | Nissan Motor Co Ltd | 排気ガス浄化触媒の劣化診断装置 |
JP2008038738A (ja) * | 2006-08-04 | 2008-02-21 | Toyota Motor Corp | NOx触媒の劣化検出装置 |
KR100906880B1 (ko) * | 2008-03-31 | 2009-07-08 | 현대자동차주식회사 | 린 녹스 트랩의 촉매 효율 모니터링 방법 |
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