CONTROL SYSTEM OF INTERNAL COMBUSTION ENGINE

To suppress deterioration of combustion efficiency and accident fire in an internal combustion engine, and suppress user's discomfort, to suppress malfunction of an EGR valve.SOLUTION: A control device ECU controls an engine mounted on a vehicle. The engine includes an EGR pipe for returning ex...

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Bibliographische Detailangaben
Hauptverfasser:	KAWAURA SOJI, SAKAINO MAKOTO
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	BLASTING COMBUSTION ENGINES CONTROLLING COMBUSTION ENGINES HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS LIGHTING MECHANICAL ENGINEERING SUPPLYING COMBUSTION ENGINES IN GENERAL, WITH COMBUSTIBLEMIXTURES OR CONSTITUENTS THEREOF WEAPONS
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Beschreibung
Zusammenfassung:	To suppress deterioration of combustion efficiency and accident fire in an internal combustion engine, and suppress user's discomfort, to suppress malfunction of an EGR valve.SOLUTION: A control device ECU controls an engine mounted on a vehicle. The engine includes an EGR pipe for returning exhaust gas in an exhaust passage to a suction passage. The EGR pipe is provided with an EGR valve configured to adjust a flow rate of exhaust gas returned to the suction passage. When fuel cut control S14 for stopping the fuel supply to the engine is executed in S10 while the vehicle is running, the ECU executes S20 forced drive control that sets the opening of the EGR valve to the fully open opening after a waiting time S16 has elapsed since the fuel cut control was started.SELECTED DRAWING: Figure 4 【課題】内燃機関の燃焼効率低下および失火を抑制し、かつユーザの違和感を抑制しつつ、ＥＧＲ弁の作動不良を抑制する。【解決手段】制御装置ＥＣＵは、車両に搭載されるエンジンを制御する。このエンジンは、排気経路内の排気を吸気経路に還流させるためのＥＧＲ配管を備える。ＥＧＲ配管には、吸気経路に還流される排気流量を調整するように構成されたＥＧＲ弁が設けられる。ＥＣＵは、車両の走行中Ｓ１０においてエンジンへの燃料供給を停止する燃料カット制御Ｓ１４が実行される場合、燃料カット制御を開始してから待ち時間Ｓ１６が経過した後に、ＥＧＲ弁の開度を全開開度にするＳ２０強制駆動制御を実行する。【選択図】図４