JP5285296B2 - 排気ガス浄化装置 - Google Patents
排気ガス浄化装置 Download PDFInfo
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- JP5285296B2 JP5285296B2 JP2008041403A JP2008041403A JP5285296B2 JP 5285296 B2 JP5285296 B2 JP 5285296B2 JP 2008041403 A JP2008041403 A JP 2008041403A JP 2008041403 A JP2008041403 A JP 2008041403A JP 5285296 B2 JP5285296 B2 JP 5285296B2
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
- B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
- B01D53/9495—Controlling the catalytic process
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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
- 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
- F01N3/0814—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents combined with catalytic converters, e.g. NOx absorption/storage reduction catalysts
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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
- F01N3/0807—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents
- 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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- 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
- F01N3/0807—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents
- F01N3/0871—Regulation of absorbents or adsorbents, e.g. purging
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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
- F01N3/0807—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents
- F01N3/0871—Regulation of absorbents or adsorbents, e.g. purging
- F01N3/0878—Bypassing absorbents or adsorbents
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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
- F01N3/10—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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- 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
- F01N3/24—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 constructional aspects of converting apparatus
- F01N3/30—Arrangements for supply of additional air
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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
- F01N3/24—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 constructional aspects of converting apparatus
- F01N3/36—Arrangements for supply of additional fuel
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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
- F01N3/24—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 constructional aspects of converting apparatus
- F01N3/38—Arrangements for igniting
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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
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
- F23G7/061—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating
- F23G7/065—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating using gaseous or liquid fuel
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/08—Arrangements of devices for treating smoke or fumes of heaters
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/40—Nitrogen compounds
- B01D2257/404—Nitrogen oxides other than dinitrogen oxide
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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
- F01N2240/00—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being
- F01N2240/14—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being a fuel burner
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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
- F01N2560/06—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics the means being a temperature sensor
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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
- F01N2900/1404—Exhaust gas 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
- F01N2900/06—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
- F01N2900/1614—NOx amount trapped in catalyst
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2215/00—Preventing emissions
- F23J2215/10—Nitrogen; Compounds thereof
- F23J2215/101—Nitrous oxide (N2O)
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2219/00—Treatment devices
- F23J2219/20—Non-catalytic reduction devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2900/00—Special arrangements for conducting or purifying combustion fumes; Treatment of fumes or ashes
- F23J2900/15081—Reheating of flue gases
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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
- 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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Description
図1を用いて、第1実施形態の排気ガス浄化装置1が説明される。排気ガス浄化装置1は、内燃機関又は燃焼機器の機関側排気通路100に接続される装置である。
次に、排気ガス浄化装置1の作動が説明される。ここで、制御装置10が、排気ガス浄化装置1を作動させる。制御装置10は、各分岐排気通路2、3について、通常運転又は再生運転を実施する。
次に、燃焼装置6、7について、作動時期がより詳しく説明される。
次に、燃焼領域A1、A2及びA3における空気過剰率λ1、λ2、λ3について、好ましい範囲が具体的に説明される。
第1実施形態の排気ガス浄化装置1は、次のような効果を発揮する。
図8を用いて、第2実施形態の排気ガス浄化装置1が説明される。第2実施形態の排気ガス浄化装置1には、第1実施形態の排気ガス浄化装置1に、更に、温度検出手段(温度センサ16)及び吸着量検出手段(窒素酸化物濃度センサ17)が、備えられている。また、第2実施形態では、制御装置10による排気ガス浄化装置1の制御に、温度センサ16及び窒素酸化物濃度センサ17の検出情報が利用される。
次に、排気ガス浄化装置1の作動において、温度検出手段(温度センサ16)及び吸着量検出手段(窒素酸化物濃度センサ17)に関連する制御が、説明される。ここで説明する制御を除いては、第2実施形態の作動は、第1実施形態の作動と同一である。
第2実施形態の排気ガス浄化装置1は、更に、次のような効果を発揮する。
図9を用いて、第3実施形態の排気ガス浄化装置1が説明される。第3実施形態の排気ガス浄化装置1では、窒素酸化物吸着材の材料に、Pt、Rh、Pdの何れかが必ず含まれている。また、第3実施形態の排気ガス浄化装置1からは、第1実施形態の排気ガス浄化装置1に備える補助空気供給手段15が取り除かれている。加えて、第2燃焼装置7が空気過剰の第2混合ガスを供給するように制御される。ここで、第1実施形態では、第2燃焼装置7は、燃料過剰の第2混合ガスを供給する。
窒素酸化物吸着材5の材料にPt、Rh、Pdが含まれるので、窒素酸化物を還元するための燃焼装置を設ける必要がない。また、第2燃焼装置6が空気過剰条件下(1.0<λ4<1.6)で燃焼反応を発生させるので、未燃物(一酸化炭素及び炭化水素)も無害化される。したがって、窒素酸化物を還元するために燃料過剰環境下での燃焼反応を発生させる場合と比べて、エネルギー消費量が低減される。
2、3 分岐排気通路
2a、3a 排気入口
2b、3b 排気出口
4 遮断弁
5 窒素酸化物吸着材
6 第1燃焼装置
7 第2燃焼装置
10 制御装置
15 補助空気供給手段
61、71、151 空気ノズル(空気供給手段の一部)
62、72 燃料ノズル(燃料供給手段の一部)
63、73 点火プラグ(着火装置)
100 機関側排気通路
100b 排気出口
Claims (5)
- 内燃機関又は燃焼機器の機関側排気通路に接続される複数の分岐排気通路と、
前記各分岐排気通路の排気入口を開放又は閉鎖して、前記機関側排気通路から前記各分岐排気通路への排気ガスの流入及び遮断を切替える排気ガス遮断手段と、
前記各分岐排気通路内に設けられ、空気過剰雰囲気で窒素酸化物を一時的に吸着し、該吸着した窒素酸化物を昇温又は還元雰囲気で脱離する窒素酸化物吸着材と、
前記各分岐排気通路内で前記各窒素酸化物吸着材より排気上流側に配置され、空気供給手段と燃料供給手段と着火手段とから構成され、燃料を燃焼させることによって前記昇温又は還元雰囲気を発生させる第1燃焼装置と、
前記各分岐排気通路内で前記各窒素酸化物吸着材より排気下流側に配置され、空気供給手段、燃料供給手段及び着火手段から構成される第2燃焼装置と、
を備えている、排気ガス浄化装置の制御方法において、
前記各分岐排気通路について、通常運転と再生運転とがあり、
前記通常運転では、前記排気ガス遮断手段の切替えにより、該通常運転の実施される前記分岐排気通路に排気ガスを流入させ、
前記再生運転では、前記排気ガス遮断手段の切替えにより、該再生運転の実施される前記分岐排気通路への排気ガスの流入を防止した状態で、前記第1燃焼装置及び前記第2燃焼装置を作動させ、
前記再生運転の実施される前記分岐排気通路内で、前記第1燃焼装置が供給する燃料と空気の割合を、空気過剰率λ1で、所定の下限値から1までの範囲に制御し、前記下限値は、前記第1燃焼装置による燃焼の安定性が保たれるように決定されており、
前記再生運転の実施される前記分岐排気通路内で、前記第1燃焼装置において、燃料と空気の供給開始時期よりも着火時期を遅らせており、
前記再生運転の実施される前記分岐排気通路内で、前記窒素酸化物吸着材の排気上流側に設置された温度検出手段により前記窒素酸化物吸着材の温度を検出し、前記窒素酸化物吸着材の温度が、該窒素酸化物吸着材上で燃料の酸化反応が開始される温度より低い場合、前記第1燃焼装置の着火手段を作動させる、
ことを特徴とする排気ガス浄化装置の制御方法。 - 請求項1に記載の排気ガス浄化装置の制御方法において、
前記排気ガス浄化装置は、前記各分岐排気通路内で前記第2燃焼装置の空気供給手段の排気下流側に補助空気供給手段を備えており、
前記分岐排気通路内で、前記第2燃焼装置の空気供給手段から前記補助空気供給手段までの空間を燃料過濃燃焼領域とし、前記補助空気供給手段から排気下流側の空間を燃料希薄燃焼領域としており、
前記再生運転の実施される前記分岐排気通路内で、
前記燃料過濃燃焼領域内のガスの空気過剰率λ2が、0.5<λ2<1.0の範囲となり、
前記燃料希薄燃焼領域内のガスの空気過剰率λ3が、1.0<λ3<1.6の範囲となるように、
前記第1燃焼装置及び前記第2燃焼装置が供給する燃料及び空気の量、及び補助空気供給手段が供給する空気の量を制御する、
排気ガス浄化装置の制御方法。 - 請求項1又は2に記載の排気ガス浄化装置において、
前記窒素酸化物吸着材の材料にPt、Rh、Pdの何れかが含まれており、
前記再生運転の実施される前記分岐排気通路内で、
前記第2燃焼装置の空気供給手段から排気下流側の空間内のガスの空気過剰率λ4を、1.0<λ4<1.6の範囲となるように、
前記第1燃焼装置及び前記第2燃焼装置が供給する燃料及び空気の量を制御する、
排気ガス浄化装置の制御方法。 - 請求項1記載の排気ガス浄化装置において、
前記内燃機関又は前記燃焼機器の始動時に、
前記各分岐排気通路内で、前記第2燃焼装置を作動させる、
排気ガス浄化装置の制御方法。 - 請求項1記載の排気ガス浄化装置の制御方法において、
前記内燃機関又は前記燃焼機器の始動時に、
前記各分岐排気通路内で、前記第1燃焼装置を空気過剰条件で作動させる、
排気ガス浄化装置の制御方法。
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JP2008041403A JP5285296B2 (ja) | 2008-02-22 | 2008-02-22 | 排気ガス浄化装置 |
PCT/JP2009/052980 WO2009104723A1 (ja) | 2008-02-22 | 2009-02-20 | 排気ガス浄化装置 |
CN2009801061211A CN101970823B (zh) | 2008-02-22 | 2009-02-20 | 排气气体净化装置 |
KR1020107018234A KR101212376B1 (ko) | 2008-02-22 | 2009-02-20 | 배기가스 정화장치 |
US12/918,649 US8656705B2 (en) | 2008-02-22 | 2009-02-20 | Exhaust gas purification device |
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US8656705B2 (en) | 2014-02-25 |
CN101970823B (zh) | 2013-04-03 |
KR20100102724A (ko) | 2010-09-24 |
JP2009197713A (ja) | 2009-09-03 |
EP2253813A1 (en) | 2010-11-24 |
WO2009104723A1 (ja) | 2009-08-27 |
CN101970823A (zh) | 2011-02-09 |
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