SPARK IGNITION INTERNAL COMBUSTION ENGINE

PROBLEM TO BE SOLVED: To provide a spark ignition internal combustion engine which reduces a pumping loss without incurring unstable combustion due to enlargement of an overlap period. SOLUTION: The spark ignition internal combustion engine is equipped with: a check valve 30 which is arranged in an...

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Bibliographische Detailangaben
1. Verfasser:	MATSUMOTO HIROMITSU
Format:	Patent
Sprache:	eng
Schlagworte:	ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES BLASTING CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TOTRANSPORTATION COMBUSTION ENGINES COMBUSTION ENGINES IN GENERAL CONTROLLING COMBUSTION ENGINES CYLINDERS, PISTONS OR CASINGS, FOR 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 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 WEAPONS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a spark ignition internal combustion engine which reduces a pumping loss without incurring unstable combustion due to enlargement of an overlap period. SOLUTION: The spark ignition internal combustion engine is equipped with: a check valve 30 which is arranged in an intake passage 20' and permits only flow to a cylinder for intake; a bypass passage 34 which is provided bypassing the check valve 30 and has a smaller passage area than the intake passage 20'; a control valve 36 which opens and closes the bypass passage 34; and an ECU (operation control means) 28 which controls opening/closing of the control valve 36 according to an engine operating condition. The control valve 36 is controlled to be closed at least in a partial load operating area at the time of non-miller cycle operation, and is controlled to be opened in a low and medium rotation high load operating area at the time of miller cycle operation. COPYRIGHT: (C)2011,JPO&INPIT