JP2015163788A - 内燃機関の排気ガス後処理システムの管路内の未燃焼炭化水素の蓄積を防ぐシステム - Google Patents
内燃機関の排気ガス後処理システムの管路内の未燃焼炭化水素の蓄積を防ぐシステム Download PDFInfo
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- 229930195733 hydrocarbon Natural products 0.000 title claims abstract description 31
- 150000002430 hydrocarbons Chemical class 0.000 title claims abstract description 31
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 27
- 238000009825 accumulation Methods 0.000 title claims abstract description 13
- 238000010438 heat treatment Methods 0.000 claims abstract description 16
- 239000003344 environmental pollutant Substances 0.000 claims abstract description 11
- 231100000719 pollutant Toxicity 0.000 claims abstract description 11
- 239000012041 precatalyst Substances 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims description 49
- 238000004590 computer program Methods 0.000 claims description 3
- 239000004215 Carbon black (E152) Substances 0.000 claims 2
- 239000003054 catalyst Substances 0.000 description 18
- 239000007789 gas Substances 0.000 description 8
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 5
- 230000004913 activation Effects 0.000 description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 3
- 229910002091 carbon monoxide Inorganic materials 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000000446 fuel Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 230000006399 behavior Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000011217 control strategy Methods 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 238000013178 mathematical model Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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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
- F01N9/00—Electrical control of exhaust gas treating apparatus
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
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- 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
- F01N3/2006—Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating
- F01N3/2013—Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating using electric or magnetic heating means
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- 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
- F02D41/021—Introducing corrections for particular conditions exterior to the engine
- F02D41/0235—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus
- F02D41/024—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus to increase temperature of the exhaust gas treating apparatus
- F02D41/0255—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus to increase temperature of the exhaust gas treating apparatus to accelerate the warming-up of the exhaust gas treating apparatus at engine start
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- 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
- F02D41/1459—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 a hydrocarbon content or concentration
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
- G01M15/04—Testing internal-combustion engines
- G01M15/10—Testing internal-combustion engines by monitoring exhaust gases or combustion flame
- G01M15/102—Testing internal-combustion engines by monitoring exhaust gases or combustion flame by monitoring exhaust gases
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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
- F01N2430/00—Influencing exhaust purification, e.g. starting of catalytic reaction, filter regeneration, or the like, by controlling engine operating characteristics
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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
- 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
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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
- 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
- F01N2900/0601—Parameters used for exhaust control or diagnosing being estimated
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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
- 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
- F01N2900/14—Parameters used for exhaust control or diagnosing said parameters being related to the exhaust gas
- F01N2900/1402—Exhaust gas composition
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- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
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- 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
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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
- 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
- F01N2900/1618—HC-slip from catalyst
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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
- 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
- F01N2900/1631—Heat amount provided to exhaust apparatus
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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
- 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
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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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
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- Y02T10/40—Engine management systems
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Abstract
【解決手段】排気ガス後処理システムはプレ触媒がなく、汚染物質放出を減少させるために少なくとも装置に蓄積された未燃焼炭化水素の質量を連続推定し、未燃焼炭化水素の質量が所定のしきい値を超えたときに排気管路(ATS)の加熱を加速する方策を駆動する。
【選択図】図2
Description
段階2:ATSに蓄積されたHCの残存値Rを取得する。
段階3:生成されたHCの質量Pと変換されたHCの質量Cを推定する。
段階4:排気管路(排気管路の少なくとも1箇所)内に蓄積されたHCの質量Iを計算する。I=R+P−C;
段階5:Iが第1のしきい値T1より大きいかどうかを確認する。
段階6:大きい場合は、WATSPを駆動する。
段階9:そうでない場合は、Iが第2のしきい値T1より小さいかどうかを確認する。
段階10:小さい場合はWATSPを非駆動し、段階13に進む。そうでない場合は、段階13に進む。WATSPを駆動した後で(段階6)
段階7:Iが第3のしきい値T3より大きいかどうかを確認する。
段階8:大きい場合、内燃機関の保護手順を駆動する。そうでない場合、
段階11:Iが、T3より低くかつT2より高い第4のT4より小さいかどうかを確認する。段階12:小さい場合、内燃機関の保護手順を非駆動し、次に段階13に進む。
段階13:内燃機関が停止されたかどうかを確認する。
段階14:停止された場合、IをR(I=R)に割り当て、段階15で制御を終える。そうでない場合は、段階3から即ち、生成されたHCの質量Pと変換されたHCの質量Cの推定から続く。
Claims (10)
- 汚染物質放出を減少させるための少なくとも1つの装置を含む内燃機関の排気ガス後処理システム(ATS)の管路内の未燃焼炭化水素の蓄積を防ぐ方法であって、プレ触媒のない前記排気ガス後処理管路を構成する予備段階と、少なくとも汚染物質放出を減少させるための前記装置に蓄積された未燃焼炭化水素の質量(I)を連続推定する手順(S)とを含み、前記推定手順(S)が、前記未燃焼炭化水素の前記質量(I)が所定のしきい値(T1)を超えたときに前記内燃機関の正常寄与よりも前記排気管路(ATS)の加熱を加速するシステム/方策を駆動する(S ON)方法。
- 前記排気管路(ATS)の前記加熱を加速する前記システム/方策の更に他の制御プロセス(S1,S2,S3,...)が存在するとき、前記推定手順(S)が、前記更に他のプロセス(S1,S2,S3,...)より高い優先権を得る、請求項1に記載の方法。
- 前記推定手順が、
前記内燃機関によって生成された未燃焼炭化水素(HC)の第1の質量(P)を計算する段階と、
少なくとも前記汚染物質放出を減少させるための前記装置によって変換された未燃焼炭化水素(HC)の第2の質量(C)を計算する段階と含む請求項1又は2に記載の方法。 - 前記推定手順(S)の最初の実行において、蓄積された未燃焼炭化水素の前記質量(I)の値が、未燃焼炭化水素(HC)の前記第1の質量(P)と前記第2の質量(C)との差から提供される、請求項3に記載の方法。
- 蓄積された未燃焼炭化水素の前記質量(I)の前記値が、不揮発性メモリに記憶され、前記推定手順(S)の更なる実行のたびに、蓄積された未燃焼炭化水素の前記質量(I)の値が、前記記憶された値に前記第1の質量(P)を加算し、それから未燃焼炭化水素(HC)の前記第2の質量(C)を減算することによって与えられる(I=R+P−C)、請求項4に記載の方法。
- 蓄積された未燃焼炭化水素の前記質量(I)が、第2のしきい値(T3)を超えたとき、前記推定手順(S)が、前記内燃機関によって生成された熱の制限モードを駆動する、請求項1〜5のいずれか一項に記載の方法。
- コンピュータ上で実行されたときに、請求項1〜6の請求項による前記推定手順(S)を実行するように適応されたプログラムコード手段を含むコンピュータプログラム。
- 記録されたプログラムを含み、コンピュータ上で実行されたときに、請求項1〜6の請求項による前記推定手順(S)を実行するように適応されたプログラムコード手段を含むコンピュータ可読手段。
- 内燃機関の排気ガス後処理システム(ATS)であって、プレ触媒がなく、
汚染物質放出を減少させるための少なくとも1つの装置と、
汚染物質放出を減少させるための少なくとも前記装置に蓄積された未燃焼炭化水素の質量(I)を連続的に推定し、未燃焼炭化水素の前記質量(I)が所定のしきい値(T1)を超えたときに排気ガス(ATS)加熱を加速するシステム/方策を駆動する(S ON)ための手段とを含む、排気ガス後処理システム(ATS)。 - 内燃機関と、請求項9に記載の内燃機関の排気ガス後処理システム(ATS)を含む車両又は機械。
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JP2012092759A (ja) * | 2010-10-27 | 2012-05-17 | Mitsubishi Heavy Ind Ltd | ディーゼルエンジンの排気浄化装置 |
EP2607672B1 (en) * | 2011-12-20 | 2016-08-17 | Fiat Powertrain Technologies S.p.A. | System and method for regenerating the particulate filter of a Diesel engine |
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2015
- 2015-02-23 JP JP2015032888A patent/JP6650675B2/ja active Active
- 2015-02-25 US US14/631,009 patent/US20150240694A1/en not_active Abandoned
- 2015-02-26 ES ES15156771.6T patent/ES2622859T3/es active Active
- 2015-02-26 EP EP15156771.6A patent/EP2924267B1/en active Active
Patent Citations (3)
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JPH1122449A (ja) * | 1997-07-08 | 1999-01-26 | Nissan Motor Co Ltd | エンジンの排気浄化装置 |
JP2004108320A (ja) * | 2002-09-20 | 2004-04-08 | Isuzu Motors Ltd | 排気ガス浄化方法及びそのシステム |
JP2007505265A (ja) * | 2003-05-16 | 2007-03-08 | ユミコア・アクチエンゲゼルシャフト・ウント・コムパニー・コマンディットゲゼルシャフト | 炭化水素を吸蔵する成分を有する触媒の運転方法 |
Also Published As
Publication number | Publication date |
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EP2924267B1 (en) | 2017-01-25 |
ES2622859T3 (es) | 2017-07-07 |
JP6650675B2 (ja) | 2020-02-19 |
EP2924267A1 (en) | 2015-09-30 |
US20150240694A1 (en) | 2015-08-27 |
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