INTAKE CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE

PROBLEM TO BE SOLVED: To improve fuel economy even under an operation condition where combustion improvement effect due to tumble flow in a combustion chamber of the engine is not much. SOLUTION: An upper passage 21 and a lower passage 22 is partitioned and formed in an intake passage of each cylind...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	NAKABAYASHI KATSUHIKO, MIYANAGA HIROAKI, NAKAJIMA KAZUSHI
Format:	Patent
Sprache:	eng
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 INTERNAL-COMBUSTION PISTON ENGINES LIGHTING MECHANICAL ENGINEERING TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE WEAPONS
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To improve fuel economy even under an operation condition where combustion improvement effect due to tumble flow in a combustion chamber of the engine is not much. SOLUTION: An upper passage 21 and a lower passage 22 is partitioned and formed in an intake passage of each cylinder of the engine 11, and a tumble control valve 23 opening and closing the upper passage 21 and an intake pressure control valve 24 opening and closing the lower passage 22 are provided. The tumble control valve 23 of each cylinder is closed to form tumble flow in the combustion chamber under a predetermined operation condition. The intake pressure control valve 24 is opened after intake stroke of each cylinder by closing the intake pressure control valve 24 near a start position of intake stroke of each cylinder under the operation condition where combustion improvement effect due to tumble flow is not much. Consequently, downstream side intake pressure of the intake pressure control valve 24 gets higher than that of a system not provided with the intake pressure control valve 24 in intake stroke of each cylinder. Cylinder pressure during intake stroke is made higher (reduce negative pressure) and pumping loss is reduced. COPYRIGHT: (C)2008,JPO&INPIT