JP5968771B2 - 内燃機関の燃料噴射制御装置 - Google Patents
内燃機関の燃料噴射制御装置 Download PDFInfo
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- 238000002347 injection Methods 0.000 title claims description 324
- 239000007924 injection Substances 0.000 title claims description 324
- 239000000446 fuel Substances 0.000 title claims description 210
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- 229930195733 hydrocarbon Natural products 0.000 description 5
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- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
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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
- F02D41/30—Controlling fuel injection
- F02D41/32—Controlling fuel injection of the low pressure type
- F02D41/34—Controlling fuel injection of the low pressure type with means for controlling injection timing or duration
- F02D41/345—Controlling injection timing
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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
- F02D13/00—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing
- F02D13/02—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing during engine operation
- F02D13/0203—Variable control of intake and exhaust valves
- F02D13/0215—Variable control of intake and exhaust valves changing the valve timing only
- F02D13/0219—Variable control of intake and exhaust valves changing the valve timing only by shifting the phase, i.e. the opening periods of the valves are constant
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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
- F02D41/182—Circuit arrangements for generating control signals by measuring intake air flow for the control of a fuel injection device
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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
- F02D11/00—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated
- F02D11/06—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated characterised by non-mechanical control linkages, e.g. fluid control linkages or by control linkages with power drive or assistance
- F02D11/10—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated characterised by non-mechanical control linkages, e.g. fluid control linkages or by control linkages with power drive or assistance of the electric type
- F02D2011/101—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated characterised by non-mechanical control linkages, e.g. fluid control linkages or by control linkages with power drive or assistance of the electric type characterised by the means for actuating the throttles
- F02D2011/102—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated characterised by non-mechanical control linkages, e.g. fluid control linkages or by control linkages with power drive or assistance of the electric type characterised by the means for actuating the throttles at least one throttle being moved only by an electric actuator
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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
- F02D2041/001—Controlling intake air for engines with variable valve actuation
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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
- F02D41/14—Introducing closed-loop corrections
- F02D41/1401—Introducing closed-loop corrections characterised by the control or regulation method
- F02D2041/1413—Controller structures or design
- F02D2041/1432—Controller structures or design the system including a filter, e.g. a low pass or high pass filter
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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
- F02D41/26—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using computer, e.g. microprocessor
- F02D41/28—Interface circuits
- F02D2041/286—Interface circuits comprising means for signal processing
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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
- F02D2200/021—Engine temperature
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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
- F02D2200/0402—Engine intake system parameters the parameter being determined by using a model of the engine intake or its components
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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
- F02D2200/0406—Intake manifold pressure
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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
- F02D2200/10—Parameters related to the engine output, e.g. engine torque or engine speed
- F02D2200/101—Engine speed
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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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- 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
- Y02T10/12—Improving ICE efficiencies
-
- 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)
- Combined Controls Of Internal Combustion Engines (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Description
デュアルインジェクションでは、インジェクタ1本あたりの燃料流量が減るため、インジェクタから噴射される噴霧粒径が小さくなる。これによって、吸気行程で燃料を噴射した場合に、燃料がシリンダ壁等に付着しにくくなり、排気エミッションや燃料消費が低減するメリットがある。
図8は、吸気ポート圧の微分値dPM/dt>0の期間における空気速度ベクトルの例である。吸気ポート圧の微分値dPM/dt>0の期間では、吸気ポートとシリンダ内の差圧が比較的大きいので、吸気ポート全体一様に、吸気ポートからシリンダ内に向かう比較的速い吸気流れが生じる。
もしくは後述する別の実施例で示すように、吸気行程内の、別の吸気ポート圧微分値dPM/dt>0期間に噴射を割り振っても良い。
吸気ポート圧力PMは、本実施例の内燃機関の吸気ポート圧センサによって検出された1番気筒の吸気ポート内圧力のサイクル平均を示している。また吸気ポート圧微分値dPM/dtは、吸気ポート圧力PMの時間微分を示している。これら吸気ポート圧力PM、吸気ポート圧微分値dPM/dtの求め方は実施例1と同じである。
図29は、本実施例における、ECU13内での噴射タイミングの決定手順の例を示すフローチャート図である。このフローチャートは実質的に図12に示すフローチャートを同じものであるが、図12のステップ107がステップ114に置き換えられている点で異なっている。
Claims (8)
- 複数の気筒に接続され気筒毎に独立した吸気ポートと、前記吸気ポート内に燃料を噴射する吸気ポート毎に設けられた燃料噴射弁とを備えた内燃機関に用いられ、前記内燃機関の作動状態量に基づき前記燃料噴射弁から噴射される燃料量を演算し、所定の燃料噴射時期に前記燃料噴射弁に噴射信号を送出する燃料噴射演算手段を備えた内燃機関の燃料噴射制御装置であって、
前記気筒の吸気行程内で燃料を噴射する期間の過半が、前記気筒の吸気ポート内のガス圧力が増加する期間内になるように、前記燃料噴射演算手段から前記燃料噴射弁に噴射信号を送出すると共に、
前記燃料噴射演算手段には吸気管に流入するガス量を調整するスロットル弁の開度信号が入力され、スロットル弁の開度変化が所定の開度変化より小さい場合に、前記気筒の吸気行程内で燃料を噴射する期間の過半が、前記気筒の吸気ポート内のガス圧力が増加する期間内になるように、前記燃料噴射演算手段から前記燃料噴射弁に噴射信号を送出することを特徴とする内燃機関の燃料噴射制御装置。 - 複数の気筒に接続され気筒毎に独立した吸気ポートと、前記吸気ポート内に燃料を噴射する吸気ポート毎に設けられた燃料噴射弁とを備えた内燃機関に用いられ、前記内燃機関の作動状態量から前記燃料噴射弁から噴射される燃料量を演算し、所定の燃料噴射時期に前記燃料噴射弁に噴射信号を送出する燃料噴射演算手段を備えた内燃機関の燃料噴射制御装置であって、
前記燃料噴射演算手段には少なくとも1つの吸気ポート内のガス圧力を検出する吸気ポート圧センサの吸気ポート圧信号が入力され、前記吸気ポート圧センサを設けた気筒の吸気行程内で燃料を噴射する期間の過半が、前記吸気ポート圧センサで検出された前記吸気ポート内のガス圧力が増加する期間内になるように、前記燃料噴射演算手段から前記燃料噴射弁に噴射信号を送出することを特徴とする内燃機関の燃料噴射制御装置。 - 請求項2に記載の内燃機関の燃料噴射制御装置において、
前記燃料噴射演算手段には吸気管に流入するガス量を調整するスロットル弁の開度信号が入力され、スロットル弁の開度変化が所定の開度変化より小さい場合に、前記吸気ポート圧センサを設けた気筒の吸気行程内で燃料を噴射する期間の過半が、前記吸気ポート圧センサで検出された前記吸気ポート内のガス圧力が増加する期間内になるように、前記燃料噴射演算手段から前記燃料噴射弁に噴射信号を送出することを特徴とする内燃機関の燃料噴射制御装置。 - 請求項1または請求項2に記載の内燃機関の燃料噴射制御装置において、
前記燃料噴射演算手段は前記吸気行程に複数回の燃料噴射を行うことを特徴とする内燃機関の燃料噴射制御装置。 - 請求項1または請求項2に記載の内燃機関の燃料噴射制御装置において、
前記燃料噴射演算手段は前記吸気行程に噴射する燃料噴射の回数を切り換えることを特徴とする内燃機関の燃料噴射制御装置。 - 請求項1または請求項2に記載の内燃機関の燃料噴射制御装置において、
前記吸気行程内での前記吸気ポート内のガス圧力が増加する複数の期間を噴射候補期間とし、前記吸気行程内で燃料を噴射する期間の過半が、前記複数の噴射候補期間のなかで前記吸気工程に対応する気筒のピストン速度が最も速い噴射候補期間になるように、前記燃料噴射演算手段から前記燃料噴射弁に噴射信号を送出することを特徴とする内燃機関の燃料噴射制御装置。 - 請求項4に記載の内燃機関の燃料噴射制御装置において、
前記吸気行程内での吸気ポート内のガス圧力が増加する複数の期間を噴射候補期間とし、前記吸気工程に対応する気筒のピストン速度によって決まる前記複数の噴射候補期間の優先順位にしたがって前記燃料噴射弁の燃料噴射時期を割り当てることを特徴とする内燃機関の燃料噴射制御装置。 - 請求項1または請求項3に記載の内燃機関の燃料噴射制御装置において、
所定の開度変化が、前記スロットル弁全開時の開度の1%以下であることを特徴とする内燃機関の燃料噴射制御装置。
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JP2012267895A JP5968771B2 (ja) | 2012-12-07 | 2012-12-07 | 内燃機関の燃料噴射制御装置 |
CN201310642435.1A CN103883412B (zh) | 2012-12-07 | 2013-12-03 | 内燃机的燃料喷射控制装置 |
US14/099,173 US9394847B2 (en) | 2012-12-07 | 2013-12-06 | Fuel injection control apparatus for internal combustion engine |
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JP6168016B2 (ja) * | 2014-09-02 | 2017-07-26 | 株式会社デンソー | 燃料密度検出装置 |
US9695772B2 (en) * | 2014-09-24 | 2017-07-04 | GM Global Technology Operations LLC | System and method for adjusting fuel injection parameters during transient events to reduce particulate emissions |
JP6960370B2 (ja) | 2018-04-19 | 2021-11-05 | 日立Astemo株式会社 | 内燃機関の燃料噴射制御装置 |
WO2020226957A1 (en) | 2019-05-03 | 2020-11-12 | Walbro Llc | Charge forming device with throttle valve |
FR3107090B1 (fr) * | 2020-02-07 | 2023-11-03 | Centre Nat Rech Scient | Dispositif d’injection de carburant, moteur et procédé associé. |
JP7299857B2 (ja) * | 2020-05-21 | 2023-06-28 | 株式会社クボタ | ポート噴射式エンジン |
CN112096529B (zh) * | 2020-08-06 | 2023-01-17 | 陈其安 | 发动机运行的控制方法、装置和存储介质 |
US11920544B2 (en) | 2021-10-18 | 2024-03-05 | Walbro Llc | Fuel supply device with injector and vapor management |
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2012
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US9394847B2 (en) | 2016-07-19 |
CN103883412B (zh) | 2016-12-07 |
US20140158092A1 (en) | 2014-06-12 |
CN103883412A (zh) | 2014-06-25 |
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