JP2015110921A - 排気浄化装置 - Google Patents
排気浄化装置 Download PDFInfo
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- JP2015110921A JP2015110921A JP2013252997A JP2013252997A JP2015110921A JP 2015110921 A JP2015110921 A JP 2015110921A JP 2013252997 A JP2013252997 A JP 2013252997A JP 2013252997 A JP2013252997 A JP 2013252997A JP 2015110921 A JP2015110921 A JP 2015110921A
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- Prior art keywords
- amount
- urea water
- scr
- reducing agent
- adsorption amount
- 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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- 238000002347 injection Methods 0.000 claims abstract description 71
- 239000007924 injection Substances 0.000 claims abstract description 71
- WTHDKMILWLGDKL-UHFFFAOYSA-N urea;hydrate Chemical compound O.NC(N)=O WTHDKMILWLGDKL-UHFFFAOYSA-N 0.000 claims abstract description 50
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 38
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 21
- 229910021529 ammonia Inorganic materials 0.000 claims abstract description 4
- 238000001179 sorption measurement Methods 0.000 claims description 62
- 239000003054 catalyst Substances 0.000 claims description 18
- 230000009467 reduction Effects 0.000 claims description 16
- 238000001514 detection method Methods 0.000 claims description 7
- 238000002485 combustion reaction Methods 0.000 claims description 6
- 239000007789 gas Substances 0.000 claims description 6
- 229910017464 nitrogen compound Inorganic materials 0.000 claims description 4
- 150000002830 nitrogen compounds Chemical class 0.000 claims description 4
- 238000005192 partition Methods 0.000 claims description 4
- 239000003990 capacitor Substances 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 abstract 1
- 239000000243 solution Substances 0.000 abstract 1
- 229910000069 nitrogen hydride Inorganic materials 0.000 description 15
- 238000000746 purification Methods 0.000 description 9
- 238000006722 reduction reaction Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 7
- 238000002474 experimental method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000011144 upstream manufacturing Methods 0.000 description 4
- 230000003247 decreasing effect Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 229910021536 Zeolite Inorganic materials 0.000 description 1
- 238000010531 catalytic reduction reaction Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000010457 zeolite Substances 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
- 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
Landscapes
- Exhaust Gas After Treatment (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
Description
12 排気通路
18 エンジン回転数センサ
19 アクセル開度センサ
20 排気後処理装置
21 尿素水噴射装置
22 SCR
27 電極
50 ECU
51 SCR内部温度演算部
52 NH3吸着量演算部
53 尿素水噴射制御部
54 噴射量補正部
Claims (3)
- 内燃機関の排気系に設けられ、尿素水から生成されるアンモニアを還元剤として排気中に含まれる窒素化合物を還元浄化する選択的還元触媒と、
前記選択的還元触媒に尿素水を噴射する尿素水噴射手段と、
前記選択的還元触媒の静電容量を検出する静電容量検出手段と、
前記静電容量検出手段から入力される静電容量に基づいて、前記選択的還元触媒の還元剤吸着量を演算する還元剤吸着量演算手段と、
少なくとも前記内燃機関の運転状態に応じて設定される所定の基準噴射量に基づいて、前記尿素水噴射手段の尿素水噴射を制御する噴射制御手段と、
前記還元剤吸着量演算手段から入力される還元剤吸着量に基づいて、前記基準噴射量を補正する噴射量補正手段と、を備える
ことを特徴とする排気浄化装置。 - 前記静電容量検出手段から入力される静電容量に基づいて、前記選択的還元触媒の内部温度を演算する内部温度演算手段をさらに備え、
前記噴射量補正手段が、前記還元剤吸着量演算手段から入力される還元剤吸着量と、前記内部温度演算手段から入力される内部温度に応じた前記選択的還元触媒の還元剤吸着可能量との差に基づいて、前記基準噴射量を補正する
請求項1に記載の排気浄化装置。 - 前記静電容量検出手段が、前記選択的還元触媒内に一個以上の隔壁を挟んで対向配置されてコンデンサを形成する少なくとも一対の電極で構成される
請求項1又は2に記載の排気浄化装置。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2013252997A JP6179378B2 (ja) | 2013-12-06 | 2013-12-06 | 排気浄化装置 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2013252997A JP6179378B2 (ja) | 2013-12-06 | 2013-12-06 | 排気浄化装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2015110921A true JP2015110921A (ja) | 2015-06-18 |
JP6179378B2 JP6179378B2 (ja) | 2017-08-16 |
Family
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JP2013252997A Expired - Fee Related JP6179378B2 (ja) | 2013-12-06 | 2013-12-06 | 排気浄化装置 |
Country Status (1)
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JP (1) | JP6179378B2 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111120061A (zh) * | 2019-12-30 | 2020-05-08 | 广州城市职业学院 | 一种scr系统监控与故障诊断设备及方法 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003293736A (ja) * | 2002-04-04 | 2003-10-15 | Mitsubishi Fuso Truck & Bus Corp | 内燃機関のNOx浄化装置 |
JP2006305732A (ja) * | 2005-03-30 | 2006-11-09 | Brother Ind Ltd | インクジェットプリンタヘッド |
JP2008223495A (ja) * | 2007-03-08 | 2008-09-25 | Ngk Insulators Ltd | 温度測定ハニカム構造体 |
JP2011012578A (ja) * | 2009-06-30 | 2011-01-20 | Isuzu Motors Ltd | Pmセンサ |
JP2011163197A (ja) * | 2010-02-09 | 2011-08-25 | Honda Motor Co Ltd | 内燃機関の排気浄化装置 |
-
2013
- 2013-12-06 JP JP2013252997A patent/JP6179378B2/ja not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003293736A (ja) * | 2002-04-04 | 2003-10-15 | Mitsubishi Fuso Truck & Bus Corp | 内燃機関のNOx浄化装置 |
JP2006305732A (ja) * | 2005-03-30 | 2006-11-09 | Brother Ind Ltd | インクジェットプリンタヘッド |
JP2008223495A (ja) * | 2007-03-08 | 2008-09-25 | Ngk Insulators Ltd | 温度測定ハニカム構造体 |
JP2011012578A (ja) * | 2009-06-30 | 2011-01-20 | Isuzu Motors Ltd | Pmセンサ |
JP2011163197A (ja) * | 2010-02-09 | 2011-08-25 | Honda Motor Co Ltd | 内燃機関の排気浄化装置 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111120061A (zh) * | 2019-12-30 | 2020-05-08 | 广州城市职业学院 | 一种scr系统监控与故障诊断设备及方法 |
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JP6179378B2 (ja) | 2017-08-16 |
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