JP4510655B2 - 内燃機関の排ガス浄化装置 - Google Patents
内燃機関の排ガス浄化装置 Download PDFInfo
- Publication number
- JP4510655B2 JP4510655B2 JP2005027008A JP2005027008A JP4510655B2 JP 4510655 B2 JP4510655 B2 JP 4510655B2 JP 2005027008 A JP2005027008 A JP 2005027008A JP 2005027008 A JP2005027008 A JP 2005027008A JP 4510655 B2 JP4510655 B2 JP 4510655B2
- Authority
- JP
- Japan
- Prior art keywords
- egr
- nox
- passage
- temperature
- side passage
- 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
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Classifications
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- 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
- F02M26/17—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the intake system
- F02M26/19—Means for improving the mixing of air and recirculated exhaust gases, e.g. venturis or multiple openings to the intake system
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- 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
- F02B29/0406—Layout of the intake air cooling or coolant circuit
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- 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
- F02M26/02—EGR systems specially adapted for supercharged engines
- F02M26/04—EGR systems specially adapted for supercharged engines with a single turbocharger
- F02M26/05—High pressure loops, i.e. wherein recirculated exhaust gas is taken out from the exhaust system upstream of the turbine and reintroduced into the intake system downstream of the compressor
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- 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
- F02M26/23—Layout, e.g. schematics
- F02M26/25—Layout, e.g. schematics with coolers having bypasses
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- 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
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust-Gas Circulating Devices (AREA)
- Exhaust Gas After Treatment (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Description
TERG←αTEGR(n)+(1−α)TEGR(n−1)……(1)
ここで、αは1.0未満の所定のなまし係数である。この式(1)から明らかなように、推定温度TEGRの今回値TEGR(n)と、前回値TEGR(n−1)との加重平均値が、今回の推定温度TEGRとして算出される。
APAVE←α・AP+(1−α)APAVE ……(2)
ここで、αは1.0未満の所定のなまし係数である。
2 ECU(NOx捕捉量算出手段手段,温度状態判定手段、NOx還元許 可手段)
3 エンジン(内燃機関)
4 吸気管(吸気系)
5 排気管(排気系)
6 インジェクタ(NOx還元手段)
12 スロットル弁(NOx還元手段)
14a EGR管(EGR通路)
14c 高温側通路
14d 低温側通路
15b EGR通路切替え弁(EGR通路切替え手段)
17 NOx触媒(NOx捕捉材)
37 排気温センサ(温度状態判定手段)
S_QNOx NOx排出量積算値(NOx捕捉量)
S_QNOxREF 判定値(所定値)
Claims (1)
- 吸気系および排気系を有する内燃機関から排出された排ガスを浄化する内燃機関の排ガス浄化装置であって、
前記排気系に設けられ、排ガス中のNOxを捕捉するNOx捕捉材と、
当該NOx捕捉材に捕捉されたNOx量を、NOx捕捉量として算出するNOx捕捉量算出手段と、
当該算出されたNOx捕捉量が所定値に達したときに、前記NOx捕捉材に捕捉されたNOxを還元するNOx還元手段と、
前記排気系と前記吸気系の間に設けられ、前記排気系から前記吸気系に排ガスの一部をEGRガスとして、より低い温度で還流させる低温側通路と、当該低温側通路よりも高い温度で還流させる高温側通路と、を有するEGR通路と、
当該EGR通路を前記低温側通路と前記高温側通路に切り替えるEGR通路切替え手段と、
EGRガスが所定の高温状態にあるか否かを判定する温度状態判定手段と、
前記EGR通路切替え手段によって前記EGR通路が前記低温側通路から前記高温側通路に切り替えられた場合において、前記温度状態判定手段によって前記EGRガスが前記所定の高温状態にあると判定されたときにのみ、前記NOx還元手段によるNOxの還元を許可するNOx還元許可手段と、
を備えていることを特徴とする内燃機関の排ガス浄化装置。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005027008A JP4510655B2 (ja) | 2005-02-02 | 2005-02-02 | 内燃機関の排ガス浄化装置 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005027008A JP4510655B2 (ja) | 2005-02-02 | 2005-02-02 | 内燃機関の排ガス浄化装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2006214321A JP2006214321A (ja) | 2006-08-17 |
JP4510655B2 true JP4510655B2 (ja) | 2010-07-28 |
Family
ID=36977753
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2005027008A Expired - Fee Related JP4510655B2 (ja) | 2005-02-02 | 2005-02-02 | 内燃機関の排ガス浄化装置 |
Country Status (1)
Country | Link |
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JP (1) | JP4510655B2 (ja) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4706645B2 (ja) * | 2007-02-23 | 2011-06-22 | トヨタ自動車株式会社 | 内燃機関の排気浄化システム |
JP4735625B2 (ja) * | 2007-09-10 | 2011-07-27 | トヨタ自動車株式会社 | 内燃機関のegr装置 |
JP5811261B2 (ja) * | 2012-02-24 | 2015-11-11 | 日産自動車株式会社 | ディーゼルエンジンの排ガス後処理システム及び排ガス後処理方法 |
CN113686588B (zh) * | 2021-07-16 | 2023-06-16 | 东风汽车集团股份有限公司 | 一种寒冷环境下egr***的试验方法和装置 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003097256A (ja) * | 2001-09-21 | 2003-04-03 | Toyota Motor Corp | 内燃機関 |
JP2004340069A (ja) * | 2003-05-16 | 2004-12-02 | Toyota Motor Corp | 内燃機関の排気浄化システム |
-
2005
- 2005-02-02 JP JP2005027008A patent/JP4510655B2/ja not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003097256A (ja) * | 2001-09-21 | 2003-04-03 | Toyota Motor Corp | 内燃機関 |
JP2004340069A (ja) * | 2003-05-16 | 2004-12-02 | Toyota Motor Corp | 内燃機関の排気浄化システム |
Also Published As
Publication number | Publication date |
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JP2006214321A (ja) | 2006-08-17 |
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