JP4415749B2 - 内燃機関の排気浄化装置 - Google Patents
内燃機関の排気浄化装置 Download PDFInfo
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- JP4415749B2 JP4415749B2 JP2004139915A JP2004139915A JP4415749B2 JP 4415749 B2 JP4415749 B2 JP 4415749B2 JP 2004139915 A JP2004139915 A JP 2004139915A JP 2004139915 A JP2004139915 A JP 2004139915A JP 4415749 B2 JP4415749 B2 JP 4415749B2
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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
- F02D41/0245—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 by increasing temperature of the exhaust gas leaving the engine
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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
- 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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- 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
- F01N9/005—Electrical control of exhaust gas treating apparatus using models instead of sensors to determine operating characteristics of exhaust systems, e.g. calculating catalyst temperature instead of measuring it directly
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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
- F02D41/029—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
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2330/00—Structure of catalyst support or particle filter
- F01N2330/06—Ceramic, e.g. monoliths
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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
- F01N2430/06—Influencing exhaust purification, e.g. starting of catalytic reaction, filter regeneration, or the like, by controlling engine operating characteristics by varying fuel-air ratio, e.g. by enriching fuel-air mixture
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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
- 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
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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
- 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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- 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
- F01N2510/00—Surface coverings
- F01N2510/06—Surface coverings for exhaust purification, e.g. catalytic reaction
- F01N2510/065—Surface coverings for exhaust purification, e.g. catalytic reaction for reducing soot ignition temperature
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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
- F01N2900/0422—Methods of control or diagnosing measuring the elapsed time
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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
- F01N3/02—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
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- 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
- F02D2200/0804—Estimation of the temperature of the exhaust gas treatment apparatus
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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
- 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
- F02D2200/0812—Particle filter loading
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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
- F02D41/0025—Controlling engines characterised by use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
- F02D41/0047—Controlling exhaust gas recirculation [EGR]
- F02D41/005—Controlling exhaust gas recirculation [EGR] according to engine operating conditions
- F02D41/0055—Special engine operating conditions, e.g. for regeneration of exhaust gas treatment apparatus
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- 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
- F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
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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
-
- 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
Description
NEON=αxNE +(1−α)xNEON前回値(ここでαは0 〜1の値。例えば、0.2)
ステップ407では、昇温停止時の回転数NEOFFを算出する。具体的には、昇温停止時の回転数NEOFFの前回値と、エンジン回転数NEを用いて、下記式を用いてなまし計算をする。
NEOFF=αxNE +(1−α)xNEOFF前回値(ここでαは0 〜1の値。例えば0.2)
11 吸気管
12 吸気絞り弁
2 排気通路
2a、2b、2c 排気管
3 パティキュレートフィルタ(DPF)
4 酸化触媒(DOC)
51、52 排気温センサ(温度検出手段)
53 エアフローメータ
6 ECU
7 EGRバルブ
8 差圧センサ
Claims (8)
- 内燃機関の排気通路に設置されるパティキュレートフィルタに堆積したパティキュレートを焼却除去して上記パティキュレートフィルタを再生する排気浄化装置であって、
上記パティキュレートフィルタを昇温するための昇温手段と、
上記パティキュレートフィルタの温度を推定する温度推定手段と、
上記パティキュレートフィルタへのパティキュレート堆積量を推定するパティキュレート堆積量推定手段と、
上記パティキュレート堆積量推定手段で推定されるパティキュレート堆積量が所定値を超えた時に、上記温度推定手段の出力に応じて上記昇温手段による昇温量を制御する昇温量制御手段と、
上記昇温量制御手段の出力を用いて、昇温操作の実施、停止の時間比率を算出する時間比率算出手段と、
上記時間比率の基準となる周期が随時変化するように、該周期を算出する基準周期算出手段と、
上記時間比率と上記基準となる周期に基づき、上記昇温手段による昇温操作の実施、停止を切り替える切り替え手段を有し、
上記基準周期算出手段は、上記基準となる周期が連続して同じ値とならないように、該周期を算出し、基準周期による周期的なトルクショックが連続しないようにすることを特徴とする内燃機関の排気浄化装置。 - 内燃機関の排気通路に設置されるパティキュレートフィルタに堆積したパティキュレートを焼却除去して上記パティキュレートフィルタを再生する排気浄化装置であって、
上記パティキュレートフィルタを昇温するための昇温手段と、
上記パティキュレートフィルタの温度を推定する温度推定手段と、
上記パティキュレートフィルタへのパティキュレート堆積量を推定するパティキュレート堆積量推定手段と、
上記パティキュレート堆積量推定手段で推定されるパティキュレート堆積量が所定値を超えた時に、上記温度推定手段の出力に応じて上記昇温手段による昇温量を制御する昇温量制御手段と、
上記昇温量制御手段の出力を用いて、昇温操作の実施、停止の時間比率を算出する時間比率算出手段と、
上記時間比率の基準となる周期が随時変化するように、該周期を算出する基準周期算出手段と、
上記時間比率と上記基準となる周期に基づき、上記昇温手段による昇温操作の実施、停止を切り替える切り替え手段を有し、
上記基準周期算出手段は、上記基準となる周期がランダムに変化するように、該周期を算出することを特徴とする内燃機関の排気浄化装置。 - 上記切り替え手段は、上記基準となる周期内において上記時間比率を保ったまま、昇温操作の実施、停止の周期が上記基準となる周期と異なるように、昇温操作の実施、停止を切り替えることを特徴とする請求項1または2記載の内燃機関の排気浄化装置。
- 内燃機関の排気通路に設置されるパティキュレートフィルタに堆積したパティキュレートを焼却除去して上記パティキュレートフィルタを再生する排気浄化装置であって、
上記パティキュレートフィルタを昇温するための昇温手段と、
上記パティキュレートフィルタの温度を推定する温度推定手段と、
上記パティキュレートフィルタへのパティキュレート堆積量を推定するパティキュレート堆積量推定手段と、
上記パティキュレート堆積量推定手段で推定されるパティキュレート堆積量が所定値を超えた時に、上記温度推定手段の出力に応じて上記昇温手段による昇温量を制御する昇温量制御手段と、
上記昇温量制御手段の出力を用いて、昇温操作の実施、停止の時間比率を算出する時間比率算出手段と、
上記時間比率の基準となる周期が随時変化するように、該周期を算出する基準周期算出手段と、
上記時間比率と上記基準となる周期に基づき、上記昇温手段による昇温操作の実施、停止を切り替える切り替え手段を有し、
上記切り替え手段は、上記基準となる周期内において上記時間比率を保ったまま、昇温操作の実施、停止の周期がランダムに変更されるように、昇温操作の実施、停止を切り替えることを特徴とする内燃機関の排気浄化装置。 - 上記時間比率算出手段は、昇温操作を実施している時の内燃機関の回転数と、停止している時の内燃機関の回転数を用いて、昇温実施時または停止時のいずれかの燃料噴射状態を補正することを特徴とする請求項1ないし4のいずれか記載の内燃機関の排気浄化装置。
- 内燃機関の排気通路に設置されるパティキュレートフィルタに堆積したパティキュレートを焼却除去して上記パティキュレートフィルタを再生する排気浄化装置であって、
上記パティキュレートフィルタを昇温するための昇温手段と、
上記パティキュレートフィルタの温度を推定する温度推定手段と、
上記パティキュレートフィルタへのパティキュレート堆積量を推定するパティキュレート堆積量推定手段と、
上記パティキュレート堆積量推定手段で推定されるパティキュレート堆積量が所定値を超えた時に、上記温度推定手段の出力に応じて上記昇温手段による昇温量を制御する昇温量制御手段と、
上記昇温量制御手段の出力を用いて、昇温操作の実施、停止の時間比率を算出する時間比率算出手段と、
上記時間比率の基準となる周期が随時変化するように、該周期を算出する基準周期算出手段と、
上記時間比率と上記基準となる周期に基づき、上記昇温手段による昇温操作の実施、停止を切り替える切り替え手段を有し、
内燃機関の回転数あるいはトルクが予め定められる限定領域にある時に、上記時間比率算出手段、上記基準周期算出手段および上記切り替え手段のいずれかの操作を禁止する操作禁止手段を設けることを特徴とする内燃機関の排気浄化装置。 - 上記補正量が所定量よりも大きくなった場合に、昇温操作の異常と判定する異常判定手段を設けることを特徴とする請求項5記載の内燃機関の排気浄化装置。
- 上記補正量が所定量よりも大きくなった場合に、上記パティキュレートフィルタの再生を中止する再生中止手段を有することを特徴とする請求項5記載の内燃機関の排気浄化装置。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004139915A JP4415749B2 (ja) | 2004-05-10 | 2004-05-10 | 内燃機関の排気浄化装置 |
US11/118,344 US7703278B2 (en) | 2004-05-10 | 2005-05-02 | Exhaust emission control device of internal combustion engine |
DE102005021264A DE102005021264B4 (de) | 2004-05-10 | 2005-05-09 | Vorrichtung zum Regeln von Abgasemissionen einer Brennkraftmaschine |
FR0504691A FR2869952B1 (fr) | 2004-05-10 | 2005-05-10 | Dispositif de commande des emissions des gaz d'echappement d'un moteur a combustion interne |
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JP2004139915A JP4415749B2 (ja) | 2004-05-10 | 2004-05-10 | 内燃機関の排気浄化装置 |
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JP2005320914A JP2005320914A (ja) | 2005-11-17 |
JP4415749B2 true JP4415749B2 (ja) | 2010-02-17 |
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JP2004139915A Expired - Fee Related JP4415749B2 (ja) | 2004-05-10 | 2004-05-10 | 内燃機関の排気浄化装置 |
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US (1) | US7703278B2 (ja) |
JP (1) | JP4415749B2 (ja) |
DE (1) | DE102005021264B4 (ja) |
FR (1) | FR2869952B1 (ja) |
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EP1653069B1 (en) * | 2004-10-26 | 2018-03-21 | Volvo Car Corporation | Method and combustion system for improving combustion characteristics for a direct injected compression ignition engine |
CN101292078B (zh) * | 2005-09-01 | 2011-03-30 | 日野自动车株式会社 | 颗粒过滤器的再生方法 |
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2004
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US20050247052A1 (en) | 2005-11-10 |
FR2869952A1 (fr) | 2005-11-11 |
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US7703278B2 (en) | 2010-04-27 |
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JP2005320914A (ja) | 2005-11-17 |
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