JP2016513193A - Egr制御方法及び装置 - Google Patents
Egr制御方法及び装置 Download PDFInfo
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- JP2016513193A JP2016513193A JP2015546398A JP2015546398A JP2016513193A JP 2016513193 A JP2016513193 A JP 2016513193A JP 2015546398 A JP2015546398 A JP 2015546398A JP 2015546398 A JP2015546398 A JP 2015546398A JP 2016513193 A JP2016513193 A JP 2016513193A
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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]
- F02D41/0065—Specific aspects of external EGR control
- F02D41/0072—Estimating, calculating or determining the EGR rate, amount or flow
-
- 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
- F02D41/0025—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
-
- 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]
- F02D41/0065—Specific aspects of external EGR control
-
- 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]
- F02D41/0077—Control of the EGR valve or actuator, e.g. duty cycle, closed loop control of position
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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
- F02D41/0002—Controlling intake air
- F02D2041/0017—Controlling intake air by simultaneous control of throttle and exhaust gas recirculation
-
- 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]
- F02D41/0065—Specific aspects of external EGR control
- F02D41/0072—Estimating, calculating or determining the EGR rate, amount or flow
- F02D2041/0075—Estimating, calculating or determining the EGR rate, amount or flow by using flow sensors
-
- 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
- F02D41/0057—Specific combustion modes
-
- 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
- F02D41/18—Circuit arrangements for generating control signals by measuring intake air flow
-
- 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
-
- 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)
- Output Control And Ontrol Of Special Type Engine (AREA)
- Exhaust-Gas Circulating Devices (AREA)
- Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
Abstract
Description
図1は、本発明の一実施例に係るEGR制御システムの構造を概略的に示す図である。
図1に示されるように、本発明の一実施形態に係るEGR制御システム100は、流量計(MAF)8と、空気フィルタ(A/F)7を通って吸入される外気を燃焼室1に供給する吸気マニホールド2側に設けられ、吸気負圧を調節する吸気圧力制御弁(IPCV)5と、排気マニホールド3側から分岐したEGR供給流路4上に設けられ、燃焼室1にて燃焼して排出される排気ガスを吸気マニホールド2側に導入するEGR弁6とを含む。EGR弁6は、例えば、低圧EGR弁(LP−EGR Vlv)であることができる。さらに、EGR供給流路4は、過給機のような補機類に従属していない低圧EGRループ(LP−EGR Loop)を形成することが好ましい。
図2に示されるように、エンジン制御ユニット(ECU)は、エンジン(E/G)に設けられた速度センサ、空気流量計などから、エンジンのrpm、燃料量(Fuel Q)及び空気量(Air Q)などに関する測定データを取得し、該測定データと、それ自体に格納された目標EGR率マップとに基づいて、実EGR量と要求EGR量とを計算する。計算の結果、実EGR量と要求EGR量との間に差がある場合、ECUは、実EGR量を要求EBR量に追従させるためにアクチュエータに制御信号を送達する。該制御信号に基づいて、吸気圧力制御弁(IPCV)の開度及びEGR弁(例えば、低圧EGR弁(LP−EGR Vlv))の開度を調節することにより、要求EGR量を満足する大量のEGRをエンジンに供給するようになる。尚、要求EGR率を満足する正確な制御を行うためには、吸入空気量の実測定値及び目標EGR率マップを用いたPID制御(Proportional−Integral−Derivative control)を行うことが好ましい。
図3に示されるように、先ず、エンジン制御ユニット(ECU)は、エンジンから低温燃焼を行うための目標EGR量(Target EGR Quantity)又は要求EGR率(Demand EGR Rate)を計算可能な情報、例えば、現在のrpm情報及び実燃料量(Actual Fuel Quantity;Fuel Q)情報を獲得する(S301)。
図4は、本発明の好適な実施例に係るEGR制御システムの数値解釈モデルを示す図である。
Claims (7)
- エンジンの燃焼室から排出される排気ガスの再循環を制御するためのEGR(Exhaust Gas Recirculation)制御方法であって、
エンジンの運転状態に関するデータを取得するデータ取得ステップと、
前記データに基づいて供給ガスの現EGR率を計算する現EGR率計算ステップと、
予め作成された目標EGR率マップにおいて前記データと対応付けられる要求EGR率を設定する要求EGR率設定ステップと、
前記要求EGR率と現EGR率との差を計算する誤差算出ステップと、
前記差に応じて供給ガスの吸入側の圧力を調節して排気ガスの再循環量を変化させることで現EGR率を要求EGR率に追従させる制御ステップと、を含むEGR制御方法。 - 前記制御ステップは、供給ガスの吸入側に設けられ、吸入負圧を調節するための吸気圧力制御弁の開度、及び、排気ガスの排出側に設けられ、排気ガスを供給ガスの吸入側に導入するためのEGR弁の開度を互いに調整することで行われることを特徴とする請求項1に記載のEGR制御方法。
- 前記排気ガスは、排気ガスの排出側から分岐したEGR供給流路に沿って供給ガスの吸入側に導入され、前記EGR供給流路は、過給機(ターボチャージャー)のような補機類に従属していない独立したループを形成することを特徴とする請求項1又は2に記載のEGR制御方法。
- 前記制御ステップでは、吸入空気量の実測定値、及び目標EGR率マップを用いたPID制御によって要求EGR率を満足させるように制御されることを特徴とする請求項1又は2に記載のEGR制御方法。
- 前記エンジンの運転状態に関するデータは、エンジン速度、供給燃料量及び吸入空気量を含むことを特徴とする請求項1に記載のEGR制御方法。
- 速度センサと空気流量計を含むエンジン;
吸気圧力制御弁及びEGR弁の開度を制御するアクチュエータ;及び
前記エンジンからエンジンの運転状態に関するデータを取得し、該取得したデータと、予め格納された目標EGR率マップに基づいて実EGR量と要求EGR量を計算し、前記計算の結果、実EGR量と要求EGR量との間に差が生じる場合、前記アクチュエータに制御信号を伝達するエンジン制御ユニット;を含み、
前記エンジン制御ユニットは、前記差に応じて供給ガスの吸入側圧力を調節して排気ガスの再循環量を変化させることで、現EGR量を要求EGR量に追従させることを特徴とするEGR制御装置。 - 前記エンジンの運転状態に関するデータは、エンジン速度、供給燃料量及び吸入空気量を含むことを特徴とする請求項6に記載のEGR制御装置。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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KR10-2012-0153021 | 2012-12-26 | ||
KR20120153021 | 2012-12-26 | ||
PCT/KR2013/011616 WO2014104628A1 (ko) | 2012-12-26 | 2013-12-13 | Egr 제어 방법 및 장치 |
Publications (1)
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JP2016513193A true JP2016513193A (ja) | 2016-05-12 |
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JP2015546398A Pending JP2016513193A (ja) | 2012-12-26 | 2013-12-13 | Egr制御方法及び装置 |
Country Status (6)
Country | Link |
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US (1) | US9790877B2 (ja) |
EP (1) | EP2940275B1 (ja) |
JP (1) | JP2016513193A (ja) |
KR (1) | KR20150091073A (ja) |
CN (1) | CN104884771B (ja) |
WO (1) | WO2014104628A1 (ja) |
Cited By (1)
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CN113685279A (zh) * | 2020-05-19 | 2021-11-23 | 广州汽车集团股份有限公司 | 一种实时egr率的确定方法及装置 |
Families Citing this family (11)
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KR102216860B1 (ko) | 2015-01-08 | 2021-02-18 | 두산인프라코어 주식회사 | Egr 밸브 제어 장치 및 제어 방법 |
KR102454615B1 (ko) * | 2015-11-04 | 2022-10-14 | 현대두산인프라코어(주) | 임팩터 타입 브리더 |
US9982610B2 (en) * | 2015-11-30 | 2018-05-29 | Hyundai Motor Company | Control method of boosting apparatus |
JP6565109B2 (ja) * | 2016-09-09 | 2019-08-28 | 日産自動車株式会社 | 内燃機関の制御方法及び制御装置 |
MY195559A (en) | 2017-02-01 | 2023-02-02 | Nissan Motor | Intake Control Method And Intake Control Device For Internal Combustion Engine |
CN109838315B (zh) * | 2017-11-29 | 2021-09-10 | 长城汽车股份有限公司 | 开度调节方法、开度调节装置及车辆 |
US10823120B2 (en) * | 2018-11-16 | 2020-11-03 | Fca Us Llc | Spark ignited engine load extension with low pressure exhaust gas recirculation and delta pressure valve |
CN110552799A (zh) * | 2019-09-20 | 2019-12-10 | 潍柴动力股份有限公司 | 一种废气再循环控制方法及装置 |
CN111779582A (zh) * | 2020-06-23 | 2020-10-16 | 河南柴油机重工有限责任公司 | 一种柴油机的egr系统的控制方法、系统及应用 |
US11313291B2 (en) * | 2020-08-03 | 2022-04-26 | GM Global Technology Operations LLC | Secondary throttle control systems and methods |
CN114856843B (zh) * | 2022-05-18 | 2023-05-23 | 潍柴动力股份有限公司 | 一种排气量计算方法、egr气量控制方法及egr系统 |
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2013
- 2013-12-13 US US14/654,938 patent/US9790877B2/en active Active
- 2013-12-13 EP EP13868718.1A patent/EP2940275B1/en active Active
- 2013-12-13 JP JP2015546398A patent/JP2016513193A/ja active Pending
- 2013-12-13 KR KR1020157014634A patent/KR20150091073A/ko not_active Application Discontinuation
- 2013-12-13 WO PCT/KR2013/011616 patent/WO2014104628A1/ko active Application Filing
- 2013-12-13 CN CN201380067962.2A patent/CN104884771B/zh not_active Expired - Fee Related
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2011522159A (ja) * | 2008-06-02 | 2011-07-28 | ボーグワーナー・インコーポレーテッド | ターボチャージャ付きエンジンシステムの複数の通路によって排気ガス再循環を制御する方法 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN113685279A (zh) * | 2020-05-19 | 2021-11-23 | 广州汽车集团股份有限公司 | 一种实时egr率的确定方法及装置 |
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Publication number | Publication date |
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WO2014104628A1 (ko) | 2014-07-03 |
EP2940275B1 (en) | 2020-02-05 |
KR20150091073A (ko) | 2015-08-07 |
EP2940275A4 (en) | 2016-08-24 |
US20150345415A1 (en) | 2015-12-03 |
US9790877B2 (en) | 2017-10-17 |
EP2940275A1 (en) | 2015-11-04 |
CN104884771A (zh) | 2015-09-02 |
CN104884771B (zh) | 2018-11-02 |
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