JP5448310B2 - 排気浄化装置 - Google Patents
排気浄化装置 Download PDFInfo
- Publication number
- JP5448310B2 JP5448310B2 JP2007182376A JP2007182376A JP5448310B2 JP 5448310 B2 JP5448310 B2 JP 5448310B2 JP 2007182376 A JP2007182376 A JP 2007182376A JP 2007182376 A JP2007182376 A JP 2007182376A JP 5448310 B2 JP5448310 B2 JP 5448310B2
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- Prior art keywords
- fuel
- particulate filter
- catalyst
- exhaust gas
- exhaust
- 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.)
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- 238000000746 purification Methods 0.000 title claims description 8
- 239000003054 catalyst Substances 0.000 claims description 111
- 239000000446 fuel Substances 0.000 claims description 99
- 238000007254 oxidation reaction Methods 0.000 claims description 68
- 239000007789 gas Substances 0.000 claims description 67
- 230000003647 oxidation Effects 0.000 claims description 58
- 238000002347 injection Methods 0.000 claims description 37
- 239000007924 injection Substances 0.000 claims description 37
- 238000006722 reduction reaction Methods 0.000 claims description 31
- 230000008929 regeneration Effects 0.000 claims description 21
- 238000011069 regeneration method Methods 0.000 claims description 21
- 238000011144 upstream manufacturing Methods 0.000 claims description 13
- 238000006243 chemical reaction Methods 0.000 claims description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 7
- 239000001301 oxygen Substances 0.000 claims description 7
- 229910052760 oxygen Inorganic materials 0.000 claims description 7
- 229930195733 hydrocarbon Natural products 0.000 claims description 5
- 150000002430 hydrocarbons Chemical class 0.000 claims description 5
- 239000013618 particulate matter Substances 0.000 claims description 5
- 230000002194 synthesizing effect Effects 0.000 claims description 4
- 239000004215 Carbon black (E152) Substances 0.000 claims description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 111
- 238000002485 combustion reaction Methods 0.000 description 5
- 230000006835 compression Effects 0.000 description 5
- 238000007906 compression Methods 0.000 description 5
- 238000001816 cooling Methods 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 239000003638 chemical reducing agent Substances 0.000 description 4
- 230000008021 deposition Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 4
- 239000004071 soot Substances 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 238000004939 coking Methods 0.000 description 3
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 238000010531 catalytic reduction reaction Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910052697 platinum Inorganic materials 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 229910052878 cordierite Inorganic materials 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- JSKIRARMQDRGJZ-UHFFFAOYSA-N dimagnesium dioxido-bis[(1-oxido-3-oxo-2,4,6,8,9-pentaoxa-1,3-disila-5,7-dialuminabicyclo[3.3.1]nonan-7-yl)oxy]silane Chemical compound [Mg++].[Mg++].[O-][Si]([O-])(O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2)O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2 JSKIRARMQDRGJZ-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Images
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
- F01N3/02—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
- F01N3/033—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 in combination with other devices
- F01N3/035—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 in combination with other devices with catalytic reactors, e.g. catalysed diesel particulate filters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/0027—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/24—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
- B01D46/2403—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies characterised by the physical shape or structure of the filtering element
- B01D46/2418—Honeycomb filters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/66—Regeneration of the filtering material or filter elements inside the filter
- B01D46/80—Chemical processes for the removal of the retained particles, e.g. by burning
- B01D46/82—Chemical processes for the removal of the retained particles, e.g. by burning with catalysts
-
- 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
- B01D53/9459—Removing one or more of nitrogen oxides, carbon monoxide, or hydrocarbons by multiple successive catalytic functions; systems with more than one different function, e.g. zone coated catalysts
-
- 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
- F01N3/0231—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 special exhaust apparatus upstream of the filter for producing nitrogen dioxide, e.g. for continuous filter regeneration systems [CRT]
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/20—Reductants
- B01D2251/208—Hydrocarbons
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/01—Engine exhaust gases
- B01D2258/012—Diesel engines and lean burn gasoline engines
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B29/00—Engines characterised by provision for charging or scavenging not provided for in groups F02B25/00, F02B27/00 or F02B33/00 - F02B39/00; Details thereof
- F02B29/04—Cooling of air intake supply
-
- 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
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- General Chemical & Material Sciences (AREA)
- Geometry (AREA)
- Environmental & Geological Engineering (AREA)
- Analytical Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Physics & Mathematics (AREA)
- Biomedical Technology (AREA)
- Exhaust Gas After Treatment (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Exhaust-Gas Circulating Devices (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
- Processes For Solid Components From Exhaust (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Description
即ち、前記NO 2 生成触媒22で生成されたNO 2 が多く存在する雰囲気下で前記燃料添加装置23により燃料を添加することにより、パティキュレートフィルタ13に担持されている酸化触媒や、その前段に配置される酸化触媒14で添加燃料(HC)とNO 2 との還元反応を促進し得るようにしてある。
4 吸気
5 吸気管
8 気筒
9 排気ガス
10 排気マニホールド
11 排気管
13 パティキュレートフィルタ
14 酸化触媒
15 EGRライン
20 制御装置
21 燃料噴射装置
22 NO2生成触媒
23 燃料添加装置(燃料添加手段)
25 選択還元型触媒
Claims (3)
- 前段に酸化触媒を装備した触媒再生型のパティキュレートフィルタを排気管途中に介装し、エンジンの各気筒への燃料噴射時にポスト噴射を追加して未燃燃料分を多く残すことで排気ガス中に燃料添加を行い、その添加燃料が前段の酸化触媒上で酸化反応した時の反応熱により後段のパティキュレートフィルタ内の捕集済みパティキュレートを燃焼させて該パティキュレートフィルタを強制再生するようにした排気浄化装置において、前段の酸化触媒より上流側の排気管に排気ガス中のNOのNO2への酸化反応を促進するNO2生成触媒を設けると共に、該NO2生成触媒と前段の酸化触媒との間で排気温度の低い運転状態にて前記ポスト噴射に替わり排気ガス中に燃料を直噴することで燃料添加を行う燃料添加手段を設け、前記NO 2 生成触媒で生成されたNO 2 が多く存在する雰囲気下で前記燃料添加手段により燃料を添加することにより、パティキュレートフィルタに担持されている酸化触媒や、その前段に配置される酸化触媒で添加燃料とNO 2 との還元反応を促進し得るように構成し、更には、前記燃料添加手段より上流側で排気系から排気ガスの一部を抜き出して吸気系へ再循環し得るように構成したことを特徴とする排気浄化装置。
- 酸素共存下でも選択的にNOxを炭化水素と反応させ得る選択還元型触媒をパティキュレートフィルタの後段に追加装備したことを特徴とする請求項1に記載の排気浄化装置。
- 酸素共存下でも選択的にNOxを炭化水素と反応させ得る選択還元型触媒を燃料添加手段と前段の酸化触媒との間に追加装備したことを特徴とする請求項1に記載の排気浄化装置。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007182376A JP5448310B2 (ja) | 2007-07-11 | 2007-07-11 | 排気浄化装置 |
PCT/JP2008/000561 WO2009008110A1 (ja) | 2007-07-11 | 2008-03-13 | 排気浄化装置 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007182376A JP5448310B2 (ja) | 2007-07-11 | 2007-07-11 | 排気浄化装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2009019556A JP2009019556A (ja) | 2009-01-29 |
JP5448310B2 true JP5448310B2 (ja) | 2014-03-19 |
Family
ID=40228304
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2007182376A Active JP5448310B2 (ja) | 2007-07-11 | 2007-07-11 | 排気浄化装置 |
Country Status (2)
Country | Link |
---|---|
JP (1) | JP5448310B2 (ja) |
WO (1) | WO2009008110A1 (ja) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5698446B2 (ja) * | 2009-08-17 | 2015-04-08 | 日野自動車株式会社 | ディーゼルエンジンの排ガス浄化装置 |
KR20110056137A (ko) * | 2009-11-20 | 2011-05-26 | 주식회사 알란텀 | Egr 가스 필터 시스템 |
US8096125B2 (en) * | 2009-12-23 | 2012-01-17 | Ford Global Technologies, Llc | Methods and systems for emission system control |
JP5644164B2 (ja) * | 2010-04-15 | 2014-12-24 | いすゞ自動車株式会社 | 排気ガス浄化装置 |
JP5752378B2 (ja) * | 2010-09-22 | 2015-07-22 | 日野自動車株式会社 | 排気浄化装置 |
JP5804544B2 (ja) * | 2010-10-26 | 2015-11-04 | 日野自動車株式会社 | 内燃機関の排気処理装置 |
JP2014141923A (ja) | 2013-01-24 | 2014-08-07 | Hino Motors Ltd | 排気浄化装置 |
JP5672328B2 (ja) * | 2013-03-22 | 2015-02-18 | トヨタ自動車株式会社 | 内燃機関の排気浄化装置 |
JP2017020347A (ja) * | 2015-07-07 | 2017-01-26 | 株式会社日本自動車部品総合研究所 | 内燃機関の制御装置 |
CN110360635B (zh) * | 2019-08-15 | 2025-01-03 | 湖北玥研科技有限公司 | 气体净化一体机 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0849533A (ja) * | 1994-08-05 | 1996-02-20 | Nissan Diesel Motor Co Ltd | エンジンの排気浄化装置 |
JP4211401B2 (ja) * | 2003-01-15 | 2009-01-21 | トヨタ自動車株式会社 | 内燃機関の排気浄化装置 |
JP2006266192A (ja) * | 2005-03-25 | 2006-10-05 | Hino Motors Ltd | エンジンの排気ガス浄化装置 |
JP2007002697A (ja) * | 2005-06-22 | 2007-01-11 | Hino Motors Ltd | 排気浄化装置 |
JP2007040221A (ja) * | 2005-08-04 | 2007-02-15 | Mitsubishi Fuso Truck & Bus Corp | 排気浄化装置 |
-
2007
- 2007-07-11 JP JP2007182376A patent/JP5448310B2/ja active Active
-
2008
- 2008-03-13 WO PCT/JP2008/000561 patent/WO2009008110A1/ja active Application Filing
Also Published As
Publication number | Publication date |
---|---|
JP2009019556A (ja) | 2009-01-29 |
WO2009008110A1 (ja) | 2009-01-15 |
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