JP4365724B2 - 排気浄化装置 - Google Patents
排気浄化装置 Download PDFInfo
- Publication number
- JP4365724B2 JP4365724B2 JP2004127097A JP2004127097A JP4365724B2 JP 4365724 B2 JP4365724 B2 JP 4365724B2 JP 2004127097 A JP2004127097 A JP 2004127097A JP 2004127097 A JP2004127097 A JP 2004127097A JP 4365724 B2 JP4365724 B2 JP 4365724B2
- Authority
- JP
- Japan
- Prior art keywords
- differential pressure
- engine
- control
- temperature
- 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.)
- Expired - Fee Related
Links
- 238000000746 purification Methods 0.000 title claims description 9
- 230000008929 regeneration Effects 0.000 claims description 49
- 238000011069 regeneration method Methods 0.000 claims description 49
- 238000001514 detection method Methods 0.000 claims description 28
- 239000003054 catalyst Substances 0.000 claims description 21
- 238000010438 heat treatment Methods 0.000 claims description 3
- 239000013618 particulate matter Substances 0.000 description 40
- 238000002347 injection Methods 0.000 description 22
- 239000007924 injection Substances 0.000 description 22
- 238000009825 accumulation Methods 0.000 description 17
- 239000000446 fuel Substances 0.000 description 16
- 238000000034 method Methods 0.000 description 10
- 238000002485 combustion reaction Methods 0.000 description 9
- 238000005259 measurement Methods 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 5
- 238000012937 correction Methods 0.000 description 5
- 230000001276 controlling effect Effects 0.000 description 4
- 230000001052 transient effect Effects 0.000 description 4
- 230000006866 deterioration Effects 0.000 description 3
- 238000005192 partition Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Images
Landscapes
- Combined Controls Of Internal Combustion Engines (AREA)
- 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)
Description
11 吸気通路
12 ターボ過給機
14 吸気絞り弁
15 排気通路
16 排気絞り弁
17 CR-DPF(連続再生式フィルタ装置)
18 EGRバルブ
19 ターボバイパス弁
20 コントロールユニット
21 DPF(CSF)
22 DOC
23 差圧センサ
24〜26 温度センサ
27 エアフローセンサ
Claims (1)
- エンジンの排気中に含まれるPMをフィルタに捕集しつつ触媒の作用によりその堆積PMを燃焼させる排気浄化装置において、
フィルタ前後の差圧を検出する検出手段と、
差圧の検出値に基づいて強制再生が必要な時期かどうかを判定する判定手段と、
差圧に基づく強制再生時期の判定を特定の運転状態に制限する制限手段と、
特定の運転状態のときにエンジン回転を所定の差圧検出回転数に維持する制御を行う制御手段と、
強制再生が必要な時期との判定を受けるとフィルタを積極的に昇温させる昇温手段と、を備え、
前記制御手段は、
エンジン回転を差圧検出回転数に維持する制御の継続時間を計測する手段と、
前記継続時間が所定時間になるとエンジン回転の制御を通常の制御に復帰させる手段と、を備え、
前記差圧検出回転数は、通常のアイドル回転数よりも高い回転数であり、
前記継続時間は、エンジンの始動時点からの経過時間であることを特徴とする排気浄化装置。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004127097A JP4365724B2 (ja) | 2004-04-22 | 2004-04-22 | 排気浄化装置 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004127097A JP4365724B2 (ja) | 2004-04-22 | 2004-04-22 | 排気浄化装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2005307878A JP2005307878A (ja) | 2005-11-04 |
JP4365724B2 true JP4365724B2 (ja) | 2009-11-18 |
Family
ID=35436931
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2004127097A Expired - Fee Related JP4365724B2 (ja) | 2004-04-22 | 2004-04-22 | 排気浄化装置 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP4365724B2 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102588054A (zh) * | 2011-01-13 | 2012-07-18 | 日立建机株式会社 | 工程机械的排气净化装置 |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5219919B2 (ja) * | 2009-05-19 | 2013-06-26 | 住友建機株式会社 | 建設機械のdpf自己再生装置 |
JP5682159B2 (ja) * | 2010-06-30 | 2015-03-11 | マツダ株式会社 | ディーゼルエンジン |
JP6159671B2 (ja) * | 2014-03-20 | 2017-07-05 | 株式会社クボタ | エンジンの排気処理装置 |
JP6904167B2 (ja) * | 2017-08-28 | 2021-07-14 | いすゞ自動車株式会社 | 内燃機関の排気ガス流量測定装置 |
JP7384114B2 (ja) * | 2020-05-29 | 2023-11-21 | いすゞ自動車株式会社 | フィルタ状態検知装置 |
CN114414143B (zh) * | 2022-01-19 | 2023-11-17 | 潍柴动力股份有限公司 | 一种dpf压差传感器自学习方法 |
-
2004
- 2004-04-22 JP JP2004127097A patent/JP4365724B2/ja not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102588054A (zh) * | 2011-01-13 | 2012-07-18 | 日立建机株式会社 | 工程机械的排气净化装置 |
Also Published As
Publication number | Publication date |
---|---|
JP2005307878A (ja) | 2005-11-04 |
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