JP6123634B2 - 圧縮着火式エンジンの制御装置 - Google Patents
圧縮着火式エンジンの制御装置 Download PDFInfo
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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
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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]
- F02D41/005—Controlling exhaust gas recirculation [EGR] according to engine operating conditions
- F02D41/0057—Specific combustion modes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
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- 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
- F01N3/0807—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents
- F01N3/0828—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents characterised by the absorbed or adsorbed substances
- F01N3/0842—Nitrogen oxides
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- F02B3/00—Engines characterised by air compression and subsequent fuel addition
- F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
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- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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- 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
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- 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
- F02D21/10—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 having secondary air added to the fuel-air mixture
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- F02D—CONTROLLING COMBUSTION ENGINES
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- 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]
- F02D41/006—Controlling exhaust gas recirculation [EGR] using internal EGR
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- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
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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
- F02D41/3011—Controlling fuel injection according to or using specific or several modes of combustion
- F02D41/3017—Controlling fuel injection according to or using specific or several modes of combustion characterised by the mode(s) being used
- F02D41/3023—Controlling fuel injection according to or using specific or several modes of combustion characterised by the mode(s) being used a mode being the stratified charge spark-ignited mode
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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
- F02D41/3011—Controlling fuel injection according to or using specific or several modes of combustion
- F02D41/3017—Controlling fuel injection according to or using specific or several modes of combustion characterised by the mode(s) being used
- F02D41/3035—Controlling fuel injection according to or using specific or several modes of combustion characterised by the mode(s) being used a mode being the premixed charge compression-ignition mode
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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
- F02D41/38—Controlling fuel injection of the high pressure type
- F02D41/40—Controlling fuel injection of the high pressure type with means for controlling injection timing or duration
- F02D41/401—Controlling injection timing
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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
- F02M25/00—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
- F02M25/10—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture adding acetylene, non-waterborne hydrogen, non-airborne oxygen, or ozone
- F02M25/12—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture adding acetylene, non-waterborne hydrogen, non-airborne oxygen, or ozone the apparatus having means for generating such gases
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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
- F01N2570/00—Exhaust treating apparatus eliminating, absorbing or adsorbing specific elements or compounds
- F01N2570/14—Nitrogen oxides
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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
- F02B17/00—Engines characterised by means for effecting stratification of charge in cylinders
- F02B17/005—Engines characterised by means for effecting stratification of charge in cylinders having direct injection in the combustion chamber
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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
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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
- F02D41/30—Controlling fuel injection
- F02D41/3011—Controlling fuel injection according to or using specific or several modes of combustion
- F02D41/3017—Controlling fuel injection according to or using specific or several modes of combustion characterised by the mode(s) being used
- F02D2041/3052—Controlling fuel injection according to or using specific or several modes of combustion characterised by the mode(s) being used the mode being the stratified charge compression-ignition mode
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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
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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
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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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- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
- Combustion Methods Of Internal-Combustion Engines (AREA)
Description
切替負荷T3よりも負荷の高い領域はSIモードに相当する。このSI領域では、前述したように、クールドEGRガスのみを気筒18内に導入する。すなわち、スロットル弁36の開度は全開に維持されると共に、EGR弁511は、全開負荷では閉弁している一方で、エンジン負荷の低下に従い次第に開く。こうして、SIモードにおいては、混合気の空燃比を理論空燃比(λ≒1)に設定する条件下でEGR率を最大に設定している。これは、ポンプ損失の低減に有利である。また、混合気の空燃比を理論空燃比に設定することは、三元触媒の利用を可能にする。エンジン負荷の低下に従い燃料噴射量が低下するため、EGR率は連続的に高くなる。このことは、エンジン負荷が連続的に変化するようなときには、気筒18内のガス組成を連続的に変化させることになるから、制御性の向上に有利である。
切替負荷T3は、前述したようにCIモードとSIモードとの切り替えに係り、切替負荷T3以下の低負荷側においてはCIモードとなる。CIモードとSIモードとの切替負荷を挟んだ低負荷側と高負荷側とのそれぞれにおいて、混合気の空燃比は理論空燃比(λ≒1)に設定している。CIモードにおいては、前述したEGR率の制限が無くなることから、気筒18内に導入する新気量を減らさずに、気筒18の充填量を最大にする。
所定負荷T2以下の領域は、図6における領域(1−2)に対応する。前述の通り、この領域では、混合気の空気過剰率λを1よりも大きくする。従って、図8において一点鎖線で示すλ≒1のラインよりも気筒18内に導入される新気量は増えかつ、排気ガス量(ここでは、内部EGRガス量)はλ≒1のラインよりも減る。尚、切替負荷T3と所定負荷T2との間には、混合気の空気過剰率λを徐変する区間を設けている。
エンジン1の負荷が低下するに従い連続的に高くなるEGR率は、特定負荷T1において、最高EGR率rmaxに設定される。特定負荷T1までは、前述の通り、エンジン1の負荷が低下するに従い、EGR率を連続的に高く設定しているが、特定負荷T1よりもエンジン1の負荷が低いときには、エンジン1の負荷の高低に拘わらず、EGR率を最高EGR率rmaxで一定にする。ここで、EGR率を、最高EGR率rmaxを超えないように設定することは、EGR率を高くして気筒18内に大量の排気ガスを導入してしまうと、気筒18内のガスの比熱比が低くなることで、圧縮開始時のガス温度が高くても、圧縮端温度が逆に低くなってしまうためである。
10 PCM(制御器)
18 気筒
21 吸気弁
22 排気弁
25 点火プラグ
50 EGR通路(ガス状態調整システム)
51 主通路(ガス状態調整システム)
511 EGR弁(ガス状態調整システム)
52 EGRクーラ(ガス状態調整システム)
67 インジェクタ(燃料噴射弁)
71 (排気側)VVL(ガス状態調整システム)
72 (吸気側)VVT(ガス状態調整システム)
74 (吸気側)VVL(ガス状態調整システム)
75 (排気側)VVT(ガス状態調整システム)
76 オゾン発生器
Claims (4)
- 気筒を有するエンジン本体と、
前記気筒内に供給する燃料を噴射するよう構成された燃料噴射弁と、
前記気筒内に導入する新気の量と排気ガスの量とをそれぞれ調整することによって、前記気筒のガス状態を調整するように構成されたガス状態調整システムと、
前記エンジン本体の運転状態が、予め設定された圧縮着火領域にあるときには、前記気筒内の混合気を圧縮着火燃焼させることにより、前記エンジン本体を運転するように構成された制御器と、を備え、
前記制御器は、前記エンジン本体の運転状態が前記圧縮着火領域における、所定負荷以上の所定領域内にあるときには、
前記エンジン本体の回転数が所定回転数よりも低い低速側領域においては、前記ガス状態調整システムによって、スロットル弁を全開にしつつ、前記気筒内の混合気の空気過剰率λが1よりも大きいリーンとなるように、前記気筒内の全ガス量に対する前記排気ガスの量の割合であるEGR率を低くし、
前記低速側領域よりも前記エンジン本体の回転数が高い領域を含む高速側領域においては、前記スロットル弁を全開にしつつ、前記気筒内の混合気の空気過剰率λが1以下となるように、前記EGR率を高くする圧縮着火式エンジンの制御装置。
- 請求項1に記載の圧縮着火式エンジンの制御装置において、
前記気筒内に導入する新気にオゾンを添加するよう構成されたオゾン発生器をさらに備え、
前記制御器は、前記所定領域の低速側領域において、前記オゾン発生器により、前記気筒内に導入する新気にオゾンを添加する圧縮着火式エンジンの制御装置。 - 請求項2に記載の圧縮着火式エンジンの制御装置において、
前記制御器は、外気温度が所定温度以下のときに、前記所定領域の低速側領域において、前記オゾン発生器により、前記気筒内に導入する新気にオゾンを添加する圧縮着火式エンジンの制御装置。 - 請求項1〜3のいずれか1項に記載の圧縮着火式エンジンの制御装置において、
前記燃料噴射弁は、前記気筒内に燃料を直接噴射するように構成され、
前記制御器は、前記所定領域の低速側領域においては、前記燃料噴射弁による燃料噴射時期を圧縮行程における前半又は吸気行程にし、前記所定領域の前記高速側領域においては、前記燃料噴射弁による燃料噴射時期を圧縮行程における後半又は膨張行程にする圧縮着火式エンジンの制御装置。
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JP2013224534A JP6123634B2 (ja) | 2013-10-29 | 2013-10-29 | 圧縮着火式エンジンの制御装置 |
US15/032,899 US9719441B2 (en) | 2013-10-29 | 2014-10-23 | Control device for compression ignition-type engine |
PCT/JP2014/005381 WO2015064066A1 (ja) | 2013-10-29 | 2014-10-23 | 圧縮着火式エンジンの制御装置 |
CN201480059958.6A CN105683537B (zh) | 2013-10-29 | 2014-10-23 | 压缩点火式发动机的控制装置 |
DE112014004936.0T DE112014004936B4 (de) | 2013-10-29 | 2014-10-23 | Steuervorrichtung für Kompressionszündungsmotor |
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JP6123634B2 true JP6123634B2 (ja) | 2017-05-10 |
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JP6123633B2 (ja) * | 2013-10-29 | 2017-05-10 | マツダ株式会社 | 圧縮着火式エンジンの制御装置 |
JP6311739B2 (ja) * | 2016-03-31 | 2018-04-18 | マツダ株式会社 | エンジンの制御装置 |
JP6253735B1 (ja) * | 2016-08-24 | 2017-12-27 | 三菱電機株式会社 | 内燃機関の燃焼支援装置 |
CN106285985A (zh) * | 2016-09-30 | 2017-01-04 | 广州汽车集团股份有限公司 | 汽油发动机过量空气系数燃烧控制方法及燃烧控制系统 |
WO2018096586A1 (ja) * | 2016-11-22 | 2018-05-31 | マツダ株式会社 | 圧縮自己着火式エンジンの制御装置 |
US10895208B2 (en) * | 2017-08-24 | 2021-01-19 | Mazda Motor Corporation | Control system for compression-ignition engine |
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WO2015064066A1 (ja) | 2015-05-07 |
CN105683537A (zh) | 2016-06-15 |
DE112014004936T5 (de) | 2016-07-21 |
US20160252031A1 (en) | 2016-09-01 |
DE112014004936B4 (de) | 2020-06-25 |
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