JP2018119403A - 内燃機関の制御装置 - Google Patents
内燃機関の制御装置 Download PDFInfo
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- 238000001514 detection method Methods 0.000 claims abstract description 21
- 230000004044 response Effects 0.000 claims abstract description 17
- 239000007789 gas Substances 0.000 claims description 85
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- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 22
- 229910052760 oxygen Inorganic materials 0.000 claims description 22
- 239000001301 oxygen Substances 0.000 claims description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 21
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- 238000002347 injection Methods 0.000 description 11
- 239000007924 injection Substances 0.000 description 11
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 10
- 238000012545 processing Methods 0.000 description 9
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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
- F02M26/45—Sensors specially adapted for EGR systems
- F02M26/46—Sensors specially adapted for EGR systems for determining the characteristics of gases, e.g. composition
- F02M26/47—Sensors specially adapted for EGR systems for determining the characteristics of gases, e.g. composition the characteristics being temperatures, pressures or flow rates
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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
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- 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
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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
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/18—Circuit arrangements for generating control signals by measuring intake air flow
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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
- F02D41/24—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
- F02D41/2406—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using essentially read only memories
- F02D41/2425—Particular ways of programming the data
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- F02D41/2438—Active learning methods
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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
- F02D41/24—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
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- 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
- F02M26/45—Sensors specially adapted for EGR systems
- F02M26/48—EGR valve position sensors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
- F02P5/00—Advancing or retarding ignition; Control therefor
- F02P5/04—Advancing or retarding ignition; Control therefor automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions
- F02P5/045—Advancing or retarding ignition; Control therefor automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions combined with electronic control of other engine functions, e.g. fuel injection
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
- F02P5/00—Advancing or retarding ignition; Control therefor
- F02P5/04—Advancing or retarding ignition; Control therefor automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions
- F02P5/145—Advancing or retarding ignition; Control therefor automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions using electrical means
- F02P5/15—Digital data processing
- F02P5/1502—Digital data processing using one central computing unit
- F02P5/1516—Digital data processing using one central computing unit with means relating to exhaust gas recirculation, e.g. turbo
-
- 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
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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
- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/04—Engine intake system parameters
- F02D2200/0404—Throttle 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
- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/04—Engine intake system parameters
- F02D2200/0418—Air humidity
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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
- F02D41/0007—Controlling intake air for control of turbo-charged or super-charged engines
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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
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/04—Introducing corrections for particular operating conditions
- F02D41/10—Introducing corrections for particular operating conditions for acceleration
- F02D41/107—Introducing corrections for particular operating conditions for acceleration and deceleration
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
- F02P5/00—Advancing or retarding ignition; Control therefor
- F02P5/04—Advancing or retarding ignition; Control therefor automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions
- F02P5/145—Advancing or retarding ignition; Control therefor automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions using electrical means
- F02P5/15—Digital data processing
- F02P5/152—Digital data processing dependent on pinking
- F02P5/1528—Digital data processing dependent on pinking for turbocompressed engine
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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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- General Engineering & Computer Science (AREA)
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- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Theoretical Computer Science (AREA)
- Signal Processing (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
- Exhaust-Gas Circulating Devices (AREA)
- Electrical Control Of Ignition Timing (AREA)
Abstract
【解決手段】吸気管(10)を流れる空気とEGRガスの混合ガスの流量を調整するスロットルバルブ(7)の下流側に設けたEGRセンサ(9、25)の検出信号を入力として第1のEGR率を求め、少なくとも空気流量センサ(3)とEGRバルブ開度センサの検出信号を入力として所定の演算を行なって第2のEGR率を推定すると共に、第2のEGR率をEGRセンサの応答遅れに対応して遅れ処理して第3のEGR率を求め、更に、第3のEGR率と第1のEGR率の差分を反映して第2のEGR率を学習補正する。
【選択図】図3
Description
「差分DREGR」=「EGR率RMODELF」−「EGR率RVAP」
で求めることができる。「差分DREGR」が求まるとステップS16に移行する。
Claims (12)
- 内燃機関の吸気系に排気系からの排気ガスを再循環するEGRバルブを有する外部EGR装置と、前記内燃機関の吸気系に設けられ、前記内燃機関に吸入される空気の空気流量を測定する空気流量センサと、排気ガスが混合された混合ガスのEGR率を検出するEGRセンサとを備えた内燃機関に使用され、少なくとも前記空気流量センサ、及び前記EGRセンサに基づき混合ガスのEGR率を推定するEGR推定手段を備えた内燃機機関の制御装置において、
前記EGR推定手段は、前記吸気系を流れる混合ガスの流量を調整するスロットルバルブの下流側に設けた前記EGRセンサの検出信号を入力として第1のEGR率を求める第1機能部と、少なくとも前記空気流量センサ、前記EGRバルブの開度センサ、前記スロットルバルブの開度センサの1つ以上の検出信号を入力として所定の演算を行なって第2のEGR率を推定する第2機能部と、前記第2のEGR率を前記EGRセンサの応答遅れに対応して応答遅れ処理して第3のEGR率を求める第3機能部と、更に、前記第3のEGR率と前記第1のEGR率の差分を反映して前記第2のEGR率を学習補正する第4機能部を備えていることを特徴とする内燃機機関の制御装置。 - 請求項1に記載の内燃機関の制御装置において、
前記EGRセンサは、少なくとも前記吸気系に設けられ混合ガスの湿度を検出する混合ガス湿度センサから構成されていることを特徴とする内燃機関の制御装置。 - 請求項2に記載の内燃機関の制御装置において、
前記EGRセンサは、前記混合ガス湿度センサに加えて、前記吸気系に設けられ空気の湿度を検出する大気湿度センサから構成されていることを特徴とする内燃機関の制御装置。 - 請求項1に記載の内燃機関の制御装置において、
前記EGRセンサは、前記吸気系に設けられ混合ガスの酸素濃度を検出する吸気側酸素濃度センサから構成されていることを特徴とする内燃機関の制御装置。 - 請求項1乃至請求項4のいずれか1項に記載の内燃機関の制御装置において、
前記第2機能部は、混合ガスの挙動を模擬する複数の数式からなる物理モデルを演算して前記第2のEGR率を推定することを特徴とする内燃機関の制御装置。 - 請求項5に記載の内燃機関の制御装置において、
前記第4機能部は、前記第3のEGR率と前記第1のEGR率とが所定の値以上に乖離している場合に、前記第3のEGR率と前記第1のEGR率の差分に対応して前記第2のEGR率を学習補正することを特徴とする内燃機機関の制御装置。 - 請求項6に記載の内燃機関の制御装置において、
前記第4機能部による学習補正は、前記物理モデルで使用する前記EGRバルブの開口面積を補正することで実行されることを特徴とする内燃機関の制御装置。 - 請求項7に記載の内燃機関の制御装置において、
前記第4機能部による学習補正は、前記第3のEGR率が前記第1のEGR率よりも大きい場合、前記EGRバルブの開口面積を小さくする補正を実行し、前記第3のEGR率が前記第1のEGR率よりも小さい場合、前記EGRバルブの開口面積を大きくする補正を実行することを特徴とする内燃機関の制御装置。 - 請求項1乃至請求項8のいずれか1項に記載の内燃機関の制御装置において、
前記EGR推定手段は、前記吸気系で結露が生じているかどうかを判定する結露判定機能部を備え、結露が生じている場合は前記第4機能部による学習補正を実行しないことを特徴とする内燃機関の制御装置。 - 請求項9に記載の内燃機関の制御装置において、
前記結露判定機能部は、前記吸気系の推定された水蒸気分圧が飽和水蒸気圧以上になった場合に、前記吸気系に結露が生じたと判定することを特徴とする内燃機関の制御装置。 - 請求項10に記載の内燃機関の制御装置において、
推定された前記水蒸気分圧は、前記吸気系の混合ガスの圧力と温度から算出されることを特徴とする内燃機関の制御装置。 - 請求項9に記載の内燃機関の制御装置において、
前記EGR推定手段は、前記結露判定機能部によって結露していると判定された状態で、前記第4機能部による学習補正が実行されていない場合、前記EGRバルブの開度を減少すると共に、点火プラグによる点火時期を遅角することを特徴とする内燃機関の制御装置。
Priority Applications (5)
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JP2017009144A JP6707038B2 (ja) | 2017-01-23 | 2017-01-23 | 内燃機関の制御装置 |
EP17892465.0A EP3575589A4 (en) | 2017-01-23 | 2017-12-27 | CONTROL DEVICE FOR COMBUSTION ENGINE |
US16/478,077 US11067041B2 (en) | 2017-01-23 | 2017-12-27 | Control device for internal combustion engine |
PCT/JP2017/046876 WO2018135265A1 (ja) | 2017-01-23 | 2017-12-27 | 内燃機関の制御装置 |
CN201780069427.9A CN110177929B (zh) | 2017-01-23 | 2017-12-27 | 内燃机的控制装置 |
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Cited By (2)
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WO2022074957A1 (ja) * | 2020-10-06 | 2022-04-14 | 日立Astemo株式会社 | 電子制御装置及びエンジン制御システム |
JP7479903B2 (ja) | 2019-04-01 | 2024-05-09 | マレリ・ヨーロッパ・エッセ・ピ・ア | 内燃機関の燃焼を制御するための方法 |
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KR20200070816A (ko) * | 2018-12-10 | 2020-06-18 | 현대자동차주식회사 | 응축수 발생을 방지하는 흡배기 시스템 및 그 작동 방법 |
KR20200071930A (ko) * | 2018-12-11 | 2020-06-22 | 현대자동차주식회사 | 응축수 방지를 위한 습도 센서가 적용된 eGR 제어 방법 |
KR20210000459A (ko) * | 2019-06-25 | 2021-01-05 | 현대자동차주식회사 | 산소농도기반 egr 유량 보상제어 방법 및 엔진 시스템 |
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