JP2019044745A - Egrシステム - Google Patents
Egrシステム Download PDFInfo
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- JP2019044745A JP2019044745A JP2017171855A JP2017171855A JP2019044745A JP 2019044745 A JP2019044745 A JP 2019044745A JP 2017171855 A JP2017171855 A JP 2017171855A JP 2017171855 A JP2017171855 A JP 2017171855A JP 2019044745 A JP2019044745 A JP 2019044745A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/0025—Controlling engines characterised by use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
- F02D41/0047—Controlling exhaust gas recirculation [EGR]
- F02D41/005—Controlling exhaust gas recirculation [EGR] according to engine operating conditions
- F02D41/0052—Feedback control of engine parameters, e.g. for control of air/fuel ratio or intake air amount
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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
- F02M26/51—EGR valves combined with other devices, e.g. with intake valves or compressors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
- F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
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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
- F02B47/00—Methods of operating engines involving adding non-fuel substances or anti-knock agents to combustion air, fuel, or fuel-air mixtures of engines
- F02B47/04—Methods of operating engines involving adding non-fuel substances or anti-knock agents to combustion air, fuel, or fuel-air mixtures of engines the substances being other than water or steam only
- F02B47/08—Methods of operating engines involving adding non-fuel substances or anti-knock agents to combustion air, fuel, or fuel-air mixtures of engines the substances being other than water or steam only the substances including exhaust gas
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D21/00—Controlling engines characterised by their being supplied with non-airborne oxygen or other non-fuel gas
- F02D21/06—Controlling engines characterised by their being supplied with non-airborne oxygen or other non-fuel gas peculiar to engines having other non-fuel gas added to combustion air
- F02D21/08—Controlling engines characterised by their being supplied with non-airborne oxygen or other non-fuel gas peculiar to engines having other non-fuel gas added to combustion air the other gas being the exhaust gas of engine
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/14—Introducing closed-loop corrections
- F02D41/1438—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
- F02D41/1444—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases
- F02D41/146—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases the characteristics being an NOx content or concentration
- F02D41/1463—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases the characteristics being an NOx content or concentration of the exhaust gases downstream of exhaust gas treatment apparatus
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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
-
- 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
- F02M26/06—Low pressure loops, i.e. wherein recirculated exhaust gas is taken out from the exhaust downstream of the turbocharger turbine and reintroduced into the intake system upstream 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
- F02M26/14—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the exhaust system
- F02M26/15—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the exhaust system in relation to engine exhaust purifying apparatus
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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
- F02M26/14—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the exhaust system
- F02M26/16—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the exhaust system with EGR valves located at or near the connection to the exhaust system
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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
- F02M26/65—Constructional details of EGR valves
- F02M26/71—Multi-way valves
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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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Exhaust Gas After Treatment (AREA)
- Exhaust-Gas Circulating Devices (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
Abstract
【解決手段】EGRシステム30は、NOxを浄化可能な排気浄化装置10を有する車両1に適用されたEGRシステムであって、EGR通路31と、流量変更機構32と、排気浄化装置から排出された排気中のNOx濃度が予め設定された基準値よりも多い場合に、テールパイプ4aに流入する排気の流量の比率が減少し且つEGR通路に流入する排気の流量の比率が増大するように流量変更機構を制御する制御処理を実行することを開始するとともに、当該制御処理においてテールパイプに流入する排気の流量の比率よりもEGR通路に流入する排気の流量の比率を多くする制御装置20と、を備える。
【選択図】図1
Description
分に直接接続されているが、この構成に限定されるものではなく、例えば、入口部34は排気浄化装置10の排気出口部分に、他の配管部材を介して接続されていてもよい。また三方弁33の第1出口部35は、テールパイプ4aの排気入口部に排気管4bを介して接続されているが、この構成に限定されるものではなく、例えば、第1出口部35は、テールパイプ4aの排気入口部分に直接接続されていてもよい。また三方弁33の第2出口部36は、EGR通路31のEGRガス入口部に直接接続されているが、この構成に限定されるものではなく、第2出口部36はEGR通路31のEGRガス入口部に、他の配管部材を介して接続されていてもよい。
制御する。このテールパイプ流量減少制御処理の詳細について、フローチャートを用いて説明すると次のようになる。
10に何等かの問題が生じて排気浄化装置10のNOx浄化性能が想定よりも低下した場合であっても、基準値(本実施形態では一例として排出ガス規制値)より多いNOx濃度の排気が大気へ放出されることを効果的に抑制することができる。すなわち、排気浄化装置10に何等かの問題が生じて排気浄化装置10のNOx浄化性能が想定よりも低下した場合であっても、大気へ放出される排気中のNOx濃度を排出ガス規制値に適合させることができる。
2 エンジン
3 吸気通路
4 排気通路
4a テールパイプ
5 ターボチャージャ
10 排気浄化装置
20 制御装置
30 EGRシステム
31 EGR通路
32 流量変更機構
33 三方弁
34 入口部
35 第1出口部
36 第2出口部
37 NOxセンサ
Claims (2)
- エンジンの排気通路のテールパイプの部分よりも排気流動方向で上流側の部分にNOxを浄化可能な排気浄化装置を有する車両に適用されたEGRシステムであって、
前記排気浄化装置から排出された排気の一部を前記エンジンの吸気通路に導入するEGR通路と、
前記排気浄化装置から排出されて前記テールパイプに流入する排気の流量と、前記排気浄化装置から排出されて前記EGR通路に流入する排気の流量と、の比率を変更する流量変更機構と、
前記排気浄化装置から排出された排気中のNOx濃度が予め設定された基準値よりも多い場合に、前記テールパイプに流入する排気の流量の比率が減少し且つ前記EGR通路に流入する排気の流量の比率が増大するように前記流量変更機構を制御する制御処理の実行を開始するとともに、当該制御処理において前記テールパイプに流入する排気の流量の比率よりも前記EGR通路に流入する排気の流量の比率を多くする制御装置と、を備えるEGRシステム。 - 前記流量変更機構は、三方弁によって構成され、
前記三方弁は、前記排気浄化装置から排出された排気が流入する入口部と、前記入口部から流入した排気が流出するとともに前記テールパイプの排気入口部に連通した第1出口部と、前記入口部から流入した排気が流出するとともに前記EGR通路のEGRガス入口部に連通した第2出口部と、を有し、前記制御装置に制御されることで、前記入口部から流入して前記第1出口部から流出される排気の流量と前記入口部から流入して前記第2出口部から流出される排気の流量との比率を変更する請求項1記載のEGRシステム。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2017171855A JP2019044745A (ja) | 2017-09-07 | 2017-09-07 | Egrシステム |
US16/644,807 US20210071625A1 (en) | 2017-09-07 | 2018-09-04 | Egr system |
DE112018004936.1T DE112018004936T5 (de) | 2017-09-07 | 2018-09-04 | Agr-system |
PCT/JP2018/032725 WO2019049853A1 (ja) | 2017-09-07 | 2018-09-04 | Egrシステム |
CN201880057838.0A CN111051677A (zh) | 2017-09-07 | 2018-09-04 | Egr系统 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2017171855A JP2019044745A (ja) | 2017-09-07 | 2017-09-07 | Egrシステム |
Publications (1)
Publication Number | Publication Date |
---|---|
JP2019044745A true JP2019044745A (ja) | 2019-03-22 |
Family
ID=65634188
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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JP2017171855A Pending JP2019044745A (ja) | 2017-09-07 | 2017-09-07 | Egrシステム |
Country Status (5)
Country | Link |
---|---|
US (1) | US20210071625A1 (ja) |
JP (1) | JP2019044745A (ja) |
CN (1) | CN111051677A (ja) |
DE (1) | DE112018004936T5 (ja) |
WO (1) | WO2019049853A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112576418A (zh) * | 2019-09-29 | 2021-03-30 | 广州汽车集团股份有限公司 | 一种具有egr气缸的发动机系统及发动机控制方法 |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111486030A (zh) * | 2020-06-10 | 2020-08-04 | 安徽腾达汽车科技有限公司 | 一种废气循环阀腔室 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000130270A (ja) * | 1998-10-29 | 2000-05-09 | Toyota Motor Corp | 内燃機関 |
WO2012081049A1 (ja) * | 2010-12-13 | 2012-06-21 | 三菱電機株式会社 | 排気ガス循環バルブ |
US20150275737A1 (en) * | 2012-11-24 | 2015-10-01 | Daimler Ag | Method for monitoring the formation of nitrogen dioxide at an oxidation catalytic converter, and exhaust system |
US20160251012A1 (en) * | 2015-02-18 | 2016-09-01 | Ford Global Technologies, Llc | Methods relating to exhaust after-treatment devices |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5321255B2 (ja) | 2009-06-05 | 2013-10-23 | トヨタ自動車株式会社 | 内燃機関の排気浄化装置 |
JP6319561B2 (ja) | 2014-03-11 | 2018-05-09 | 三菱自動車工業株式会社 | 排気浄化システム |
JP2017171855A (ja) | 2016-03-25 | 2017-09-28 | 凸版印刷株式会社 | 粘着シート |
-
2017
- 2017-09-07 JP JP2017171855A patent/JP2019044745A/ja active Pending
-
2018
- 2018-09-04 US US16/644,807 patent/US20210071625A1/en not_active Abandoned
- 2018-09-04 CN CN201880057838.0A patent/CN111051677A/zh active Pending
- 2018-09-04 DE DE112018004936.1T patent/DE112018004936T5/de active Pending
- 2018-09-04 WO PCT/JP2018/032725 patent/WO2019049853A1/ja active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000130270A (ja) * | 1998-10-29 | 2000-05-09 | Toyota Motor Corp | 内燃機関 |
WO2012081049A1 (ja) * | 2010-12-13 | 2012-06-21 | 三菱電機株式会社 | 排気ガス循環バルブ |
US20150275737A1 (en) * | 2012-11-24 | 2015-10-01 | Daimler Ag | Method for monitoring the formation of nitrogen dioxide at an oxidation catalytic converter, and exhaust system |
US20160251012A1 (en) * | 2015-02-18 | 2016-09-01 | Ford Global Technologies, Llc | Methods relating to exhaust after-treatment devices |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112576418A (zh) * | 2019-09-29 | 2021-03-30 | 广州汽车集团股份有限公司 | 一种具有egr气缸的发动机系统及发动机控制方法 |
Also Published As
Publication number | Publication date |
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CN111051677A (zh) | 2020-04-21 |
US20210071625A1 (en) | 2021-03-11 |
WO2019049853A1 (ja) | 2019-03-14 |
DE112018004936T5 (de) | 2020-06-04 |
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