CONTROL DEVICE FOR ENGINE
To provide a control device for engine which can suppress generation of knocking while improving fuel efficiency.SOLUTION: An engine which performs a compression self-ignition combustion in which a mixed gas of fuel containing petrol and air are self-ignited in the combustion chamber 6 under a prede...
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Sprache: | eng ; jpn |
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Zusammenfassung: | To provide a control device for engine which can suppress generation of knocking while improving fuel efficiency.SOLUTION: An engine which performs a compression self-ignition combustion in which a mixed gas of fuel containing petrol and air are self-ignited in the combustion chamber 6 under a predefined condition, includes: a knock determination means for predicting and detecting generation of knocking in the combustion chamber 6; and a fluid injection means 14 for injecting fluid at an injection pressure of 30 MPa or more in the combustion chamber 6. When generation of knocking is predicted or detected by the knock determination means, the fluid is injected by the fluid injection means 14 in the combustion chamber during a period of a low-temperature oxidation reaction of the mixed gas in the combustion chamber 6 or during a first half of a period of a high-temperature oxidation reaction of the mixed gas in the combustion chamber 6.SELECTED DRAWING: Figure 9
【課題】費性能を良好にしつつノッキングの発生を抑制することのできるエンジンの制御装置を提供する。【解決手段】ガソリンを含有する燃料と空気との混合気が前記燃焼室内で自着火する圧縮自着火燃焼が所定の条件下で実行されるエンジンにおいて、燃焼室6内でのノッキングの発生を予測または検出するノック判定手段と、燃焼室6内に30MPa以上の噴射圧で流体を噴射する流体噴射手段14とを設ける。ノック判定手段によってノッキングの発生が予測または検出されると、燃焼室6内で混合気の低温酸化反応が生じている期間中または燃焼室6内で混合気の高温酸化反応が生じている期間の前半に、燃焼室6内に流体噴射手段14によって流体を噴射する。【選択図】図9 |
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