JP2007107415A - 排気浄化装置の制御装置 - Google Patents
排気浄化装置の制御装置 Download PDFInfo
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- JP2007107415A JP2007107415A JP2005297306A JP2005297306A JP2007107415A JP 2007107415 A JP2007107415 A JP 2007107415A JP 2005297306 A JP2005297306 A JP 2005297306A JP 2005297306 A JP2005297306 A JP 2005297306A JP 2007107415 A JP2007107415 A JP 2007107415A
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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
- F02D41/027—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus to purge or regenerate the exhaust gas treating apparatus
- F02D41/0275—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus to purge or regenerate the exhaust gas treating apparatus the exhaust gas treating apparatus being a NOx trap or adsorbent
- F02D41/028—Desulfurisation of NOx traps or adsorbent
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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
- 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
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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
- 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
- F01N13/0097—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 the purifying devices are arranged in a single housing
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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
- 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
- F01N13/011—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 purifying devices arranged in parallel
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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
- 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
- F01N13/08—Other arrangements or adaptations of exhaust conduits
- F01N13/10—Other arrangements or adaptations of exhaust conduits of exhaust manifolds
- F01N13/107—More than one exhaust manifold or exhaust collector
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- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
- F01N3/023—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles
- F01N3/025—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles using fuel burner or by adding fuel to exhaust
- F01N3/0253—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles using fuel burner or by adding fuel to exhaust adding fuel to exhaust gases
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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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
- F01N3/0807—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents
- F01N3/0821—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents combined with particulate filters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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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
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- F01N3/0828—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents characterised by the absorbed or adsorbed substances
- F01N3/0842—Nitrogen oxides
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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
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- F01N3/0871—Regulation of absorbents or adsorbents, e.g. purging
- F01N3/0885—Regeneration of deteriorated absorbents or adsorbents, e.g. desulfurization of NOx traps
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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
- F01N3/2033—Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating using a fuel burner or introducing fuel into exhaust duct
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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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- F01N9/00—Electrical control of exhaust gas treating apparatus
- F01N9/002—Electrical control of exhaust gas treating apparatus of filter regeneration, e.g. detection of clogging
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- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
- F02B37/007—Engines characterised by provision of pumps driven at least for part of the time by exhaust with exhaust-driven pumps arranged in parallel, e.g. at least one pump supplying alternatively
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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- 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
- F02D41/027—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus to purge or regenerate the exhaust gas treating apparatus
- F02D41/029—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus to purge or regenerate the exhaust gas treating apparatus the exhaust gas treating apparatus being a particulate filter
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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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- F01N2430/00—Influencing exhaust purification, e.g. starting of catalytic reaction, filter regeneration, or the like, by controlling engine operating characteristics
- F01N2430/08—Influencing exhaust purification, e.g. starting of catalytic reaction, filter regeneration, or the like, by controlling engine operating characteristics by modifying ignition or injection timing
- F01N2430/085—Influencing exhaust purification, e.g. starting of catalytic reaction, filter regeneration, or the like, by controlling engine operating characteristics by modifying ignition or injection timing at least a part of the injection taking place during expansion or exhaust stroke
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- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/08—Exhaust gas treatment apparatus parameters
- F02D2200/0802—Temperature of the exhaust gas treatment apparatus
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- F02D41/14—Introducing closed-loop corrections
- F02D41/1438—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
- F02D41/1439—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the position of the sensor
- F02D41/1441—Plural sensors
- F02D41/1443—Plural sensors with one sensor per cylinder or group of cylinders
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- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/02—EGR systems specially adapted for supercharged engines
- F02M26/08—EGR systems specially adapted for supercharged engines for engines having two or more intake charge compressors or exhaust gas turbines, e.g. a turbocharger combined with an additional compressor
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- F02M26/22—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage
- F02M26/23—Layout, e.g. schematics
- F02M26/24—Layout, e.g. schematics with two or more coolers
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- F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
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- 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
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Abstract
【解決手段】各排気系統(排気通路13L,13R)に配設した触媒の状態に関わらず、全ての排気系統のPM再生またはS被毒再生を同一に処理にて制御することで、各排気系統の触媒制御要求毎にPM再生・S被毒再生を実施する場合と比較して、再生回数を少なくしてPM再生・S被毒再生に伴う燃費悪化を抑制する。また、PM再生制御時には、複数の触媒の中で触媒床温が最も低い触媒を基準にしてPM再生を実施することによりPMの燃え残りを無くす。さらに、S被毒再生制御については、複数の触媒の触媒床温を平均した値を基準にしてS被毒再生を実施することにより、触媒の熱劣化を最小限に抑えつつ、硫黄分を十分に離脱できるようにする。
【選択図】図1
Description
まず、本発明を適用するエンジンの一例を図1を参照しながら説明する。
ECU100は、CPU、ROM、RAM及びバックアップRAMなどを備えている。ROMは、各種制御プログラムや、それら各種制御プログラムを実行する際に参照されるマップ等が記憶されている。CPUは、ROMに記憶された各種制御プログラムやマップに基づいて演算処理を実行する。また、RAMは、CPUでの演算結果や各センサから入力されたデータ等を一時的に記憶するメモリであり、バックアップRAMは、エンジン1の停止時にその保存すべきデータ等を記憶する不揮発性のメモリである。
ECU100は、DPNR触媒18L,18Rに堆積したPMを酸化させるPM再生制御、NSR触媒17L,17R及びDPNR触媒18L,18RのNOx吸蔵還元触媒をS被毒から回復させるS被毒再生制御、及び、NSR触媒17L,17R及びDPNR触媒18L,18RのNOx吸蔵還元触媒に吸蔵されたNOxを還元するNOx還元制御などを実行する。以下、これらPM再生制御、S被毒再生制御及びNOx還元制御について説明する。
ECU100は、DPNR触媒18L,18RへのPMの堆積量を推定している。PM堆積量の推定方法としては、エンジン回転数と燃料噴射量に応じたエンジン排出PM量を予め実験等により求めてマップ化しておき、このマップにより求められるエンジン排出PM量を積算してPMの堆積量を算出するという方法が挙げられる。
ECU100は、NSR触媒17L,17R及びDPNR触媒18L,18RのNOx吸蔵還元触媒のS被毒量を推定している。S被毒量の推定方法としては、エンジン回転数と燃料噴射量に応じたS被毒量を予め実験等により求めてマップ化しておき、このマップにより求められるS被毒量を積算するという方法が挙げられる。そして、ECU100は、推定したS被毒量が所定の判定値(限界推定量)を超えたときにS被毒を回復する再生時期であると判定してS被毒再生を実施する。S被毒再生制御については後述する。
次に、ECU100が実行するPM再生・S被毒再生制御について図2のフローチャートを参照しながら説明する。このPM再生・S被毒再生制御ルーチンは所定時間周期で繰り返し実行される。
まず、ディーゼルエンジンにおいては、大部分の運転領域で排気の空燃比はリーン空燃比となっているため、通常の運転状態では、NSR触媒17L,17R及びDPNR触媒18L,18Rの周囲雰囲気は高酸素濃度状態となっている。このため、排気ガス中のNOxは、NSR触媒17L,17R及びDPNR触媒18L,18RのNOx吸蔵還元触媒に吸蔵されるが、周囲雰囲気が低酸素濃度となるときは非常に少ないため、吸蔵されたNOxが還元されにくく、NOx吸蔵還元触媒のNOx吸蔵能力が飽和しやすい。
以上の例では、排気系統が2系統のV型8気筒ディーゼルエンジンに本発明を適用した例を示したが、本発明はこれに限られることなく、例えば図6に示すように、左右のバンク2L,2Rにそれぞれ2系統の排気通路201L,202L及び201L,201Rが形成され、全体として4系統の排気系統が接続されたディーゼルエンジンなど、排気系統が3系統以上の任意の気筒数のディーゼルにも適用可能である。また、V型エンジンに限られることなく、水平対向型や直列型などの他のレイアウトのエンジンにも適用可能である。さらに、本発明は、筒内直噴ディーゼルエンジンに限られることなく、他のタイプのディーゼルエンジンにも適用可能である。
2L,2RL バンク
3 シリンダ
4 インジェクタ
5 吸気通路
5L,5R 分岐路
5C 共通吸気通路
10 インテークマニホールド
11L,11R エキゾーストマニホールド
12L,12R 燃料添加弁
13L,13R 排気通路(排気系統)
17L,17R NSR触媒
18L,18R DPNR触媒
21L,21R 第1排気温センサ
23L,23R 空燃比センサ
24L,24R 差圧センサ
100 ECU
Claims (3)
- 内燃機関の複数のシリンダ群に互いに異なる排気系統が接続され、その各排気系統にそれぞれ排気ガスを浄化する触媒が配設された排気浄化装置の制御装置であって、前記複数の排気系統の触媒のPM再生またはS被毒再生を同一の処理にて制御することを特徴とする排気浄化装置の制御装置。
- 前記PM再生は、前記複数の触媒の中で触媒床温が最も低い触媒を基準に制御するとともに、前記S被毒再生は、前記複数の触媒の触媒床温を平均した値を基準にして制御することを特徴とする請求項1に記載の排気浄化装置の制御装置。
- 前記複数の触媒のPM堆積量を吸入空気量に基づいて推定し、その推定したPM堆積量が最も大きい触媒を基準にしてPM再生時期を判定することを特徴とする請求項1または2に記載の排気浄化装置の制御装置。
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JP2005297306A JP4657074B2 (ja) | 2005-10-12 | 2005-10-12 | 排気浄化装置の制御装置及び排気浄化装置の制御方法 |
US12/089,848 US20090229256A1 (en) | 2005-10-12 | 2006-10-10 | Control unit for exhaust gas purifying apparatus |
PCT/JP2006/320217 WO2007043529A1 (ja) | 2005-10-12 | 2006-10-10 | 排気浄化装置の制御装置 |
EP06811529A EP1947306B1 (en) | 2005-10-12 | 2006-10-10 | Control unit for exhaust gas purifying apparatus |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008274892A (ja) * | 2007-05-02 | 2008-11-13 | Toyota Motor Corp | 内燃機関の排気浄化装置 |
WO2008153873A2 (en) * | 2007-06-05 | 2008-12-18 | U.S. Environmental Protection Agency | Diesel particulate filter regeneration system |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2920823A1 (fr) * | 2007-09-12 | 2009-03-13 | Renault Sas | Procede de decrassage d'un echangeur thermique d'un circuit de recirculation de gaz d'echappement d'un moteur a combustion interne |
US8001782B2 (en) * | 2007-09-26 | 2011-08-23 | Ford Global Technologies, Llc | Approach for identifying and responding to an unresponsive wastegate in a twin turbocharged engine |
DE102009052151B3 (de) | 2009-11-06 | 2011-05-05 | Mtu Friedrichshafen Gmbh | Kühlsystem einer Brennkraftmaschine |
JP5328818B2 (ja) * | 2011-01-12 | 2013-10-30 | 株式会社豊田自動織機 | 排気ガス浄化装置及びその制御方法 |
JP2013007375A (ja) * | 2011-05-24 | 2013-01-10 | Nissan Motor Co Ltd | 内燃機関の燃料噴射制御装置 |
JP5553451B2 (ja) * | 2011-10-20 | 2014-07-16 | 株式会社豊田自動織機 | 内燃機関の排気浄化装置 |
DE102014219061A1 (de) * | 2014-09-22 | 2016-03-24 | Voith Patent Gmbh | Abgasnachbehandlungssystem für Verbrennungsmotoren |
DE102018213469B4 (de) * | 2018-08-10 | 2024-05-02 | Bayerische Motoren Werke Aktiengesellschaft | Erkennen einer Modifikation eines Partikelfilters für einen Abgasstrang eines Kraftfahrzeugs |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003343314A (ja) * | 2002-05-21 | 2003-12-03 | Denso Corp | 内燃機関の排気浄化装置 |
JP2005036662A (ja) * | 2003-07-16 | 2005-02-10 | Toyota Motor Corp | 内燃機関の排気処理装置 |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19852240A1 (de) * | 1998-11-12 | 2000-05-18 | Volkswagen Ag | Überwachungsverfahren für NOx-Speicherkatalysatoren und Abgasreinigungsvorrichtung zur Durchführung dieses Verfahrens |
US6826906B2 (en) * | 2000-08-15 | 2004-12-07 | Engelhard Corporation | Exhaust system for enhanced reduction of nitrogen oxides and particulates from diesel engines |
JP2004339993A (ja) * | 2003-05-14 | 2004-12-02 | Toyota Motor Corp | 内燃機関の排気浄化システム |
JP4034703B2 (ja) * | 2003-07-16 | 2008-01-16 | トヨタ自動車株式会社 | 内燃機関の排気制御装置 |
JP4320621B2 (ja) * | 2003-08-25 | 2009-08-26 | 株式会社デンソー | 内燃機関の排気浄化装置 |
JP4304447B2 (ja) * | 2003-08-29 | 2009-07-29 | いすゞ自動車株式会社 | 排気ガス浄化方法及び排気ガス浄化システム |
JP2005155374A (ja) * | 2003-11-21 | 2005-06-16 | Isuzu Motors Ltd | 排気浄化方法及び排気浄化システム |
JP4349119B2 (ja) * | 2003-12-19 | 2009-10-21 | いすゞ自動車株式会社 | 排気ガス浄化方法及び排気ガス浄化システム |
US7249455B2 (en) * | 2003-12-23 | 2007-07-31 | Arvin Technologies, Inc. | Method and apparatus for regenerating a nitrogen oxides absorber |
JP4321332B2 (ja) * | 2004-04-01 | 2009-08-26 | トヨタ自動車株式会社 | 内燃機関の排気浄化装置 |
JP4415881B2 (ja) * | 2005-03-09 | 2010-02-17 | トヨタ自動車株式会社 | 内燃機関の排気浄化装置 |
-
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- 2006-10-10 EP EP06811529A patent/EP1947306B1/en not_active Expired - Fee Related
- 2006-10-10 WO PCT/JP2006/320217 patent/WO2007043529A1/ja active Application Filing
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003343314A (ja) * | 2002-05-21 | 2003-12-03 | Denso Corp | 内燃機関の排気浄化装置 |
JP2005036662A (ja) * | 2003-07-16 | 2005-02-10 | Toyota Motor Corp | 内燃機関の排気処理装置 |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008274892A (ja) * | 2007-05-02 | 2008-11-13 | Toyota Motor Corp | 内燃機関の排気浄化装置 |
WO2008153873A2 (en) * | 2007-06-05 | 2008-12-18 | U.S. Environmental Protection Agency | Diesel particulate filter regeneration system |
WO2008153873A3 (en) * | 2007-06-05 | 2009-02-12 | Us Environment | Diesel particulate filter regeneration system |
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EP1947306A1 (en) | 2008-07-23 |
EP1947306B1 (en) | 2011-12-14 |
WO2007043529A1 (ja) | 2007-04-19 |
JP4657074B2 (ja) | 2011-03-23 |
US20090229256A1 (en) | 2009-09-17 |
EP1947306A4 (en) | 2010-11-10 |
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