JP6750536B2 - 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
- JP6750536B2 JP6750536B2 JP2017036535A JP2017036535A JP6750536B2 JP 6750536 B2 JP6750536 B2 JP 6750536B2 JP 2017036535 A JP2017036535 A JP 2017036535A JP 2017036535 A JP2017036535 A JP 2017036535A JP 6750536 B2 JP6750536 B2 JP 6750536B2
- Authority
- JP
- Japan
- Prior art keywords
- way catalyst
- ammonia concentration
- exhaust gas
- degree
- fuel ratio
- 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.)
- Expired - Fee Related
Links
- 238000002485 combustion reaction Methods 0.000 title claims description 11
- 238000000746 purification Methods 0.000 title claims description 11
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 214
- 239000003054 catalyst Substances 0.000 claims description 139
- 229910021529 ammonia Inorganic materials 0.000 claims description 107
- 239000000446 fuel Substances 0.000 claims description 55
- 230000006866 deterioration Effects 0.000 claims description 49
- 239000007789 gas Substances 0.000 description 35
- 238000001514 detection method Methods 0.000 description 9
- 231100000572 poisoning Toxicity 0.000 description 9
- 230000000607 poisoning effect Effects 0.000 description 9
- 230000007423 decrease Effects 0.000 description 7
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 238000011144 upstream manufacturing Methods 0.000 description 4
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
Images
Landscapes
- Exhaust Gas After Treatment (AREA)
Description
25 吸入空気量センサ
32 三元触媒
34 空燃比センサ
35 温度センサ
36 アンモニアセンサ
40 電子制御ユニット
Claims (1)
- 機関排気通路内に配置された三元触媒と、
前記三元触媒の温度、前記三元触媒に流入する排気ガスの空燃比、及び、機関吸入空気量を含む機関運転状態を検出するように構成されている運転状態センサと、
前記三元触媒から流出する排気ガス中のアンモニア濃度を検出するように構成されているアンモニアセンサと、
電子制御ユニットであって、
前記三元触媒に流入する排気ガスの空燃比が理論空燃比よりもリッチのときに前記三元触媒から流出する排気ガス中のアンモニア濃度を検出するとともに、このときの前記機関運転状態を検出し、
検出された前記機関運転状態における基準アンモニア濃度を算出し、
検出された前記アンモニア濃度が前記基準アンモニア濃度よりも高いときに前記三元触媒の劣化度合いがあらかじめ定められた設定度合いよりも高いと判断する、
ように構成されている電子制御ユニットと、
を備えた、内燃機関の排気浄化装置。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2017036535A JP6750536B2 (ja) | 2017-02-28 | 2017-02-28 | 内燃機関の排気浄化装置 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2017036535A JP6750536B2 (ja) | 2017-02-28 | 2017-02-28 | 内燃機関の排気浄化装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2018141417A JP2018141417A (ja) | 2018-09-13 |
JP6750536B2 true JP6750536B2 (ja) | 2020-09-02 |
Family
ID=63527916
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2017036535A Expired - Fee Related JP6750536B2 (ja) | 2017-02-28 | 2017-02-28 | 内燃機関の排気浄化装置 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP6750536B2 (ja) |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4290109B2 (ja) * | 2004-10-29 | 2009-07-01 | 日産ディーゼル工業株式会社 | 排気浄化装置 |
JP4492669B2 (ja) * | 2007-10-24 | 2010-06-30 | トヨタ自動車株式会社 | 内燃機関の空燃比制御装置 |
JP5224188B2 (ja) * | 2010-03-12 | 2013-07-03 | 独立行政法人交通安全環境研究所 | 排気ガス浄化装置 |
US8919099B2 (en) * | 2011-06-10 | 2014-12-30 | GM Global Technology Operations LLC | System and method for determining an ammonia generation rate in a three-way catalyst |
US9664094B2 (en) * | 2013-09-26 | 2017-05-30 | General Electric Company | Systems and methods for monitoring catalyst deactivation and controlling an air/fuel ratio |
-
2017
- 2017-02-28 JP JP2017036535A patent/JP6750536B2/ja not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
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JP2018141417A (ja) | 2018-09-13 |
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