CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE
PROBLEM TO BE SOLVED: To provide a control device, for an internal combustion engine with a structure allowing gas to flow back from an intake passage to an EGR passage, capable of preventing processing object gas such as blow-by gas and purge gas from directly flowing into an exhaust passage withou...
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Format: | Patent |
Sprache: | eng ; jpn |
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Zusammenfassung: | PROBLEM TO BE SOLVED: To provide a control device, for an internal combustion engine with a structure allowing gas to flow back from an intake passage to an EGR passage, capable of preventing processing object gas such as blow-by gas and purge gas from directly flowing into an exhaust passage without being processed.SOLUTION: When detecting or predicting that pressure in an intake passage of an EGR valve is higher or getting higher than the pressure in an exhaust passage thereof, a control device for an internal combustion engine operates a processing object gas introduction system so as to stop introduction of processing object gas into the intake passage or reduce an amount of the processing object gas introduced into the intake passage.SELECTED DRAWING: Figure 5
【課題】吸気通路からEGR通路にガスが逆流しうる構造の内燃機関において、被処理ガスであるブローバイガスやパージガスが未処理のまま排気通路に流れることを抑えることができる制御装置を提供する。【解決手段】本発明に係る制御装置は、EGRバルブの吸気通路の側に作用する圧力がEGRバルブの排気通路の側に作用する圧力よりも高いこと又は高くなることが検知又は予測された場合、被処理ガスの吸気通路への導入を停止するか、或いは、被処理ガスの吸気通路への導入量を減量するように被処理ガス導入システムを操作する。【選択図】図5 |
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