Control device of an internal combustion engine

A control device (28) for an internal combustion engine (1) which has a variable valve train capable of variably controlling opening/closing time or lift amount of at least one of an intake valve and an exhaust valve, and a turbo charger comprises: an internal EGR scavenging ratio arithmetic operati...

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Bibliographische Detailangaben
Hauptverfasser:	Suzuki, Kunihiko, Nemoto, Mamoru
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BLASTING CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TOTRANSPORTATION COMBUSTION ENGINES COMBUSTION ENGINES IN GENERAL CONTROLLING COMBUSTION ENGINES GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS IGNITION, OTHER THAN COMPRESSION IGNITION, FORINTERNAL-COMBUSTION ENGINES INTERNAL-COMBUSTION PISTON ENGINES LIGHTING MECHANICAL ENGINEERING SUPPLYING COMBUSTION ENGINES IN GENERAL, WITH COMBUSTIBLEMIXTURES OR CONSTITUENTS THEREOF TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES WEAPONS
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Beschreibung
Zusammenfassung:	A control device (28) for an internal combustion engine (1) which has a variable valve train capable of variably controlling opening/closing time or lift amount of at least one of an intake valve and an exhaust valve, and a turbo charger comprises: an internal EGR scavenging ratio arithmetic operation unit to, in a charging status, when intake pressure becomes higher in comparison with exhaust pressure, perform arithmetic operation to obtain an internal EGR scavenging ratio as an internal EGR ratio scavenged from a cylinder to the exhaust pipe and reduced in the overlap duration in which both the intake valve and the exhaust valve are opened; and a unit to control the overlap duration so as to control the internal EGR scavenging ratio to a predetermined ratio.