JP5471831B2 - Scrシステム - Google Patents
Scrシステム Download PDFInfo
- Publication number
- JP5471831B2 JP5471831B2 JP2010119715A JP2010119715A JP5471831B2 JP 5471831 B2 JP5471831 B2 JP 5471831B2 JP 2010119715 A JP2010119715 A JP 2010119715A JP 2010119715 A JP2010119715 A JP 2010119715A JP 5471831 B2 JP5471831 B2 JP 5471831B2
- Authority
- JP
- Japan
- Prior art keywords
- urea water
- urea
- injection amount
- float
- level sensor
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Fee Related
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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
- F01N3/2066—Selective catalytic reduction [SCR]
- F01N3/208—Control of selective catalytic reduction [SCR], e.g. 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
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/30—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats
- G01F23/64—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats of the free float type without mechanical transmission elements
- G01F23/72—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats of the free float type without mechanical transmission elements using magnetically actuated indicating means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/30—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats
- G01F23/64—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats of the free float type without mechanical transmission elements
- G01F23/72—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats of the free float type without mechanical transmission elements using magnetically actuated indicating means
- G01F23/74—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats of the free float type without mechanical transmission elements using magnetically actuated indicating means for sensing changes in level only at discrete points
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F25/00—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume
- G01F25/20—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume of apparatus for measuring liquid level
- G01F25/22—Checking proper indicating of discrete level by floats
-
- 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
- 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
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/14—Arrangements for the supply of substances, e.g. conduits
- F01N2610/1406—Storage means for substances, e.g. tanks or reservoirs
-
- 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
- F01N2610/14—Arrangements for the supply of substances, e.g. conduits
- F01N2610/1406—Storage means for substances, e.g. tanks or reservoirs
- F01N2610/142—Controlling the filling of the tank
-
- 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
-
- 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
- F01N2900/0418—Methods of control or diagnosing using integration or an accumulated value within an elapsed period
-
- 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
- F01N2900/18—Parameters used for exhaust control or diagnosing said parameters being related to the system for adding a substance into the exhaust
- F01N2900/1806—Properties of reducing agent or dosing system
- F01N2900/1814—Tank level
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/30—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats
- G01F23/76—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats characterised by the construction of the float
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Toxicology (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Combustion & Propulsion (AREA)
- Health & Medical Sciences (AREA)
- Exhaust Gas After Treatment (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Description
(2)バッテリ電圧が所定範囲内(例えば10〜16V)であること
(3)レベルセンサ120の回路にエラーがないこと
(4)レベルセンサ120で検出した液面高さが、最も低い段階(ステップ)でないこと。
2 尿素水噴射量積算部
3 積算値リセット部
4 異常判定部
100 SCRシステム
102 排気管
103 SCR装置(選択還元触媒装置)
104 ドージングバルブ
105 尿素タンク
119 SCRセンサ
120 レベルセンサ(尿素水レベルセンサ)
125 ECM
126 DCU
127 尿素水噴射制御部
128 尿素水レベル検出部
E エンジン
Claims (2)
- エンジンの排気管に設けられた選択還元触媒装置と、
尿素水を貯留する尿素タンクと、
前記尿素タンクに設けられ、前記尿素タンク内の尿素水の液面に追従するフロートと、該フロートの位置を検出することにより、前記尿素タンク内に貯留された尿素水の液面高さを検出する検出手段とを備えたフロート式の尿素水レベルセンサと、
前記エンジンから排出されるNOx量に応じて尿素水の噴射量を制御する尿素水噴射制御部と、を備えたSCRシステムにおいて、
尿素水の噴射量を積算して、尿素水噴射量積算値を算出する尿素水噴射量積算部と、
前記検出手段からの検出値が変化したときに、前記尿素水噴射量積算値をリセットする積算値リセット部と、
前記尿素水噴射量積算値が所定の判定用閾値を超えたときに、前記尿素水レベルセンサに異常があると判断する異常判定部と、を備えたことを特徴とするSCRシステム。 - 前記尿素水レベルセンサの前記検出手段は、前記尿素タンク内に貯留された尿素水の液面高さを段階的に検出するようにされ、
前記判定用閾値は、前記検出手段が検出する尿素水の液面高さの段階における少なくとも1段階に相当する尿素水の量を超える値に設定される請求項1記載のSCRシステム。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2010119715A JP5471831B2 (ja) | 2010-05-25 | 2010-05-25 | Scrシステム |
CN201180025420.XA CN102906404B (zh) | 2010-05-25 | 2011-05-16 | Scr系统 |
US13/699,495 US8959891B2 (en) | 2010-05-25 | 2011-05-16 | Selective catalytic reduction system |
EP11786510.5A EP2578860B1 (en) | 2010-05-25 | 2011-05-16 | Selective catalytic reduction system |
PCT/JP2011/061214 WO2011148811A1 (ja) | 2010-05-25 | 2011-05-16 | Scrシステム |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2010119715A JP5471831B2 (ja) | 2010-05-25 | 2010-05-25 | Scrシステム |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2011247137A JP2011247137A (ja) | 2011-12-08 |
JP5471831B2 true JP5471831B2 (ja) | 2014-04-16 |
Family
ID=45003802
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2010119715A Expired - Fee Related JP5471831B2 (ja) | 2010-05-25 | 2010-05-25 | Scrシステム |
Country Status (5)
Country | Link |
---|---|
US (1) | US8959891B2 (ja) |
EP (1) | EP2578860B1 (ja) |
JP (1) | JP5471831B2 (ja) |
CN (1) | CN102906404B (ja) |
WO (1) | WO2011148811A1 (ja) |
Cited By (1)
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---|---|---|---|---|
KR20200071684A (ko) * | 2018-12-10 | 2020-06-19 | 티이 커넥티비티 코포레이션 | 유체 센서 조립체 |
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JP5900608B2 (ja) * | 2012-04-18 | 2016-04-06 | トヨタ自動車株式会社 | 液体の残量検出装置 |
JP5978798B2 (ja) * | 2012-06-28 | 2016-08-24 | 三菱自動車工業株式会社 | 燃料レベルセンサ診断装置 |
JP6127510B2 (ja) * | 2012-12-28 | 2017-05-17 | いすゞ自動車株式会社 | 尿素scr用尿素水消費量診断装置 |
KR20140087369A (ko) | 2012-12-28 | 2014-07-09 | 현대자동차주식회사 | 요소 레벨 센서의 고장 진단 방법 및 장치 |
JP6142530B2 (ja) * | 2012-12-28 | 2017-06-07 | いすゞ自動車株式会社 | 尿素scr用尿素水消費量診断装置 |
JP5842805B2 (ja) * | 2012-12-28 | 2016-01-13 | 株式会社デンソー | 尿素水添加制御装置 |
JP6127509B2 (ja) | 2012-12-28 | 2017-05-17 | いすゞ自動車株式会社 | 尿素scr用尿素水消費量診断装置 |
JP6136297B2 (ja) | 2013-01-28 | 2017-05-31 | いすゞ自動車株式会社 | 尿素scr用尿素水消費量診断装置 |
JP6024478B2 (ja) | 2013-01-28 | 2016-11-16 | いすゞ自動車株式会社 | 尿素scr用尿素水配管閉塞検出装置 |
CN103147830B (zh) * | 2013-03-26 | 2016-09-28 | 凯龙高科技股份有限公司 | 一种scr尾气后处理系统故障诊断仪 |
ITBO20130181A1 (it) * | 2013-04-22 | 2014-10-23 | Magneti Marelli Spa | Sensore di livello per un serbatoio contenente un liquido di comando in un motore a combustione interna |
US20140331645A1 (en) * | 2013-05-13 | 2014-11-13 | Caterpillar Inc. | System and Method for Injector Fault Remediation |
EP2848931A1 (en) * | 2013-09-16 | 2015-03-18 | Inergy Automotive Systems Research (Société Anonyme) | A vehicle urea tank associated with a sensing chamber for acoustic quality and level sensing |
JP6505356B2 (ja) * | 2013-07-17 | 2019-04-24 | 住友建機株式会社 | ショベル |
CN104344869A (zh) * | 2013-07-30 | 2015-02-11 | 中国第一汽车股份有限公司 | 固体储氨系统的剩余氨气量的光电检测方法 |
US9151657B2 (en) * | 2013-09-10 | 2015-10-06 | Texas Lfp, Llc | Dual measurement liquid level transducer |
JP6225638B2 (ja) * | 2013-10-25 | 2017-11-08 | いすゞ自動車株式会社 | Scrシステム、scrセンサ、およびレベルセンサ |
JP6437831B2 (ja) * | 2015-01-22 | 2018-12-12 | 日立建機株式会社 | 排気浄化装置 |
JP6601260B2 (ja) * | 2015-03-04 | 2019-11-06 | 株式会社デンソー | 燃料レベルセンサ診断装置 |
WO2016171029A1 (ja) * | 2015-04-22 | 2016-10-27 | ボッシュ株式会社 | 液位センサの異常検出装置及び異常検出方法 |
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JP2017110955A (ja) | 2015-12-15 | 2017-06-22 | 本田技研工業株式会社 | 液位推定装置 |
KR101807038B1 (ko) * | 2016-07-25 | 2017-12-08 | 현대자동차 주식회사 | 요소수 레벨 측정값 보정, 표시 및 히터 작동 방법 및 장치 |
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CN111173603B (zh) * | 2020-01-19 | 2022-06-21 | 无锡威孚力达催化净化器有限责任公司 | 一种尿素消耗量的监测方法、装置及系统 |
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CN114687839B (zh) * | 2022-03-18 | 2023-06-23 | 潍柴动力股份有限公司 | 尿素液位卡滞的确定方法、确定装置和车辆 |
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JP2000303826A (ja) | 1999-04-16 | 2000-10-31 | Isuzu Motors Ltd | ディーゼルエンジンの排ガス浄化装置 |
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JP5008366B2 (ja) * | 2006-09-26 | 2012-08-22 | Udトラックス株式会社 | エンジンの排気浄化装置 |
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JP5152912B2 (ja) * | 2008-06-27 | 2013-02-27 | ボッシュ株式会社 | タンク内センサの合理性診断方法及び合理性診断装置 |
JP5900608B2 (ja) * | 2012-04-18 | 2016-04-06 | トヨタ自動車株式会社 | 液体の残量検出装置 |
-
2010
- 2010-05-25 JP JP2010119715A patent/JP5471831B2/ja not_active Expired - Fee Related
-
2011
- 2011-05-16 US US13/699,495 patent/US8959891B2/en active Active
- 2011-05-16 WO PCT/JP2011/061214 patent/WO2011148811A1/ja active Application Filing
- 2011-05-16 CN CN201180025420.XA patent/CN102906404B/zh active Active
- 2011-05-16 EP EP11786510.5A patent/EP2578860B1/en active Active
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20200071684A (ko) * | 2018-12-10 | 2020-06-19 | 티이 커넥티비티 코포레이션 | 유체 센서 조립체 |
KR102655658B1 (ko) * | 2018-12-10 | 2024-04-09 | 티이 커넥티비티 코포레이션 | 유체 센서 조립체 |
Also Published As
Publication number | Publication date |
---|---|
EP2578860A1 (en) | 2013-04-10 |
JP2011247137A (ja) | 2011-12-08 |
CN102906404A (zh) | 2013-01-30 |
WO2011148811A1 (ja) | 2011-12-01 |
US20130064716A1 (en) | 2013-03-14 |
CN102906404B (zh) | 2015-04-22 |
EP2578860B1 (en) | 2019-07-24 |
EP2578860A4 (en) | 2015-12-16 |
US8959891B2 (en) | 2015-02-24 |
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