JP2007016635A - 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
- Publication number
- JP2007016635A JP2007016635A JP2005196816A JP2005196816A JP2007016635A JP 2007016635 A JP2007016635 A JP 2007016635A JP 2005196816 A JP2005196816 A JP 2005196816A JP 2005196816 A JP2005196816 A JP 2005196816A JP 2007016635 A JP2007016635 A JP 2007016635A
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- Prior art keywords
- oxidant
- internal combustion
- combustion engine
- nox catalyst
- emission control
- Prior art date
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- 238000002485 combustion reaction Methods 0.000 title claims description 29
- 239000007800 oxidant agent Substances 0.000 claims abstract description 78
- 230000001590 oxidative effect Effects 0.000 claims abstract description 67
- 239000003054 catalyst Substances 0.000 claims abstract description 66
- 239000003638 chemical reducing agent Substances 0.000 claims description 26
- 238000000746 purification Methods 0.000 claims description 17
- 238000009825 accumulation Methods 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 abstract description 11
- 230000004913 activation Effects 0.000 abstract description 2
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 110
- 239000013618 particulate matter Substances 0.000 description 34
- 239000007789 gas Substances 0.000 description 29
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 11
- 230000004048 modification Effects 0.000 description 9
- 238000012986 modification Methods 0.000 description 9
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 8
- 238000010586 diagram Methods 0.000 description 7
- 230000003647 oxidation Effects 0.000 description 7
- 238000007254 oxidation reaction Methods 0.000 description 7
- 230000002093 peripheral effect Effects 0.000 description 7
- 229910021529 ammonia Inorganic materials 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 230000003197 catalytic effect Effects 0.000 description 3
- 239000000446 fuel Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 238000005192 partition Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000011144 upstream manufacturing Methods 0.000 description 3
- MGWGWNFMUOTEHG-UHFFFAOYSA-N 4-(3,5-dimethylphenyl)-1,3-thiazol-2-amine Chemical compound CC1=CC(C)=CC(C=2N=C(N)SC=2)=C1 MGWGWNFMUOTEHG-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000007791 liquid phase Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- JCXJVPUVTGWSNB-UHFFFAOYSA-N nitrogen dioxide Inorganic materials O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 125000004430 oxygen atom Chemical group O* 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 2
- 229910010271 silicon carbide Inorganic materials 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- OUUQCZGPVNCOIJ-UHFFFAOYSA-M Superoxide Chemical compound [O-][O] OUUQCZGPVNCOIJ-UHFFFAOYSA-M 0.000 description 1
- 229910010413 TiO 2 Inorganic materials 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- -1 alkoxyl radical Chemical class 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 229910052878 cordierite Inorganic materials 0.000 description 1
- 230000001186 cumulative effect Effects 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
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 239000003502 gasoline Substances 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- TUJKJAMUKRIRHC-UHFFFAOYSA-N hydroxyl Chemical compound [OH] TUJKJAMUKRIRHC-UHFFFAOYSA-N 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000003244 pro-oxidative effect Effects 0.000 description 1
- 230000003584 silencer Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- 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
- Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
- Y02C20/00—Capture or disposal of greenhouse gases
- Y02C20/10—Capture or disposal of greenhouse gases of nitrous oxide (N2O)
Landscapes
- Filtering Of Dispersed Particles In Gases (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Exhaust Gas After Treatment (AREA)
- Processes For Solid Components From Exhaust (AREA)
Abstract
【解決手段】 第2分岐路12によるNOx触媒5への酸化剤の供給量を、第1分岐路11によるDPF4への酸化剤の供給量よりも大とする。第2分岐路12によって供給される酸化剤により、3NO+O3→3NO2の反応によって十分な量のNO2がNOx触媒5に供給されて、好適な量ないし割合のNO2によりNOx触媒5の活性化を促進することができる。
【選択図】 図1
Description
2 エンジン
4 DPF
5 NOx触媒
6 酸化触媒
7,507a,507b リアクタ
11,111,211,311,411 第1分岐路
11a 手動バルブ
12,112,312,412 第2分岐路
Claims (6)
- 内燃機関からの排気経路中に設けられPMを捕集するPM捕集装置と、当該PM捕集装置よりも下流側に設けられたNOx触媒装置と、前記PM捕集装置の直前に酸化剤を供給する第1の酸化剤供給手段と、前記NOx触媒装置の直前に酸化剤を供給する第2の酸化剤供給手段と、を有する内燃機関の排気浄化装置において、
前記第2の酸化剤供給手段による酸化剤の供給量を、前記第1の酸化剤供給手段による酸化剤の供給量よりも大としたことを特徴とする内燃機関の排気浄化装置。 - 請求項1に記載の内燃機関の排気浄化装置であって、
前記第2の酸化剤供給手段による酸化剤の供給量は、前記NOx触媒装置の所定の必要酸化剤量を上回るように設定されていることを特徴とする内燃機関の排気浄化装置。 - 請求項1または2に記載の内燃機関の排気浄化装置であって、
前記第1および第2の酸化剤供給手段による供給量を可変する制御手段を更に備えたことを特徴とする内燃機関の排気浄化装置。 - 請求項3に記載の内燃機関の排気浄化装置であって、
前記制御手段は、前記PM捕集装置におけるPMの堆積量に基づいて前記供給量を可変することを特徴とする内燃機関の排気浄化装置。 - 請求項3または4に記載の内燃機関の排気浄化装置であって、
前記制御手段は、前記PM捕集装置の温度に基づいて前記供給量を可変することを特徴とする内燃機関の排気浄化装置。 - 請求項1ないし5のいずれかに記載の内燃機関の排気浄化装置であって、
前記NOx触媒装置の直前に還元剤を供給する還元剤供給手段を更に備えたことを特徴とする内燃機関の排気浄化装置。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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JP2005196816A JP4529822B2 (ja) | 2005-07-05 | 2005-07-05 | 内燃機関の排気浄化装置 |
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JP2005196816A JP4529822B2 (ja) | 2005-07-05 | 2005-07-05 | 内燃機関の排気浄化装置 |
Publications (2)
Publication Number | Publication Date |
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JP2007016635A true JP2007016635A (ja) | 2007-01-25 |
JP4529822B2 JP4529822B2 (ja) | 2010-08-25 |
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JP2005196816A Expired - Fee Related JP4529822B2 (ja) | 2005-07-05 | 2005-07-05 | 内燃機関の排気浄化装置 |
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008223576A (ja) * | 2007-03-12 | 2008-09-25 | Toyota Motor Corp | 内燃機関の排気ガス浄化装置 |
WO2012124531A1 (ja) * | 2011-03-15 | 2012-09-20 | 日野自動車株式会社 | 排ガス浄化装置 |
JP2012193620A (ja) * | 2011-03-15 | 2012-10-11 | Hino Motors Ltd | 排ガス浄化装置 |
JP2013011193A (ja) * | 2011-06-28 | 2013-01-17 | Hino Motors Ltd | 排ガス浄化装置 |
WO2013042644A1 (ja) * | 2011-09-21 | 2013-03-28 | 日野自動車株式会社 | 排ガス浄化装置 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2004024301A1 (de) * | 2002-09-05 | 2004-03-25 | Robert Bosch Gmbh | Verfahren zur abgasnachbehandlung und vorrichtung hierzu |
JP2004092557A (ja) * | 2002-09-02 | 2004-03-25 | Mitsubishi Fuso Truck & Bus Corp | エンジン制御装置 |
WO2004061278A1 (de) * | 2003-01-02 | 2004-07-22 | Daimlerchrysler Ag | Abgasnachbehandlungseinrichtung und -verfahren |
-
2005
- 2005-07-05 JP JP2005196816A patent/JP4529822B2/ja not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2004092557A (ja) * | 2002-09-02 | 2004-03-25 | Mitsubishi Fuso Truck & Bus Corp | エンジン制御装置 |
WO2004024301A1 (de) * | 2002-09-05 | 2004-03-25 | Robert Bosch Gmbh | Verfahren zur abgasnachbehandlung und vorrichtung hierzu |
WO2004061278A1 (de) * | 2003-01-02 | 2004-07-22 | Daimlerchrysler Ag | Abgasnachbehandlungseinrichtung und -verfahren |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008223576A (ja) * | 2007-03-12 | 2008-09-25 | Toyota Motor Corp | 内燃機関の排気ガス浄化装置 |
WO2008126566A1 (ja) * | 2007-03-12 | 2008-10-23 | Toyota Jidosha Kabushiki Kaisha | 内燃機関の排気ガス浄化装置 |
WO2012124531A1 (ja) * | 2011-03-15 | 2012-09-20 | 日野自動車株式会社 | 排ガス浄化装置 |
JP2012193620A (ja) * | 2011-03-15 | 2012-10-11 | Hino Motors Ltd | 排ガス浄化装置 |
CN103547774A (zh) * | 2011-03-15 | 2014-01-29 | 日野自动车株式会社 | 废气净化装置 |
US9021792B2 (en) | 2011-03-15 | 2015-05-05 | Hino Motors, Ltd. | Exhaust gas purification device |
JP2013011193A (ja) * | 2011-06-28 | 2013-01-17 | Hino Motors Ltd | 排ガス浄化装置 |
WO2013042644A1 (ja) * | 2011-09-21 | 2013-03-28 | 日野自動車株式会社 | 排ガス浄化装置 |
JP5456943B2 (ja) * | 2011-09-21 | 2014-04-02 | 日野自動車株式会社 | 排ガス浄化装置 |
US9156000B2 (en) | 2011-09-21 | 2015-10-13 | Hino Motors, Ltd. | Exhaust gas purifier |
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JP4529822B2 (ja) | 2010-08-25 |
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