SPARK IGNITION DIRECT INJECTION ENGINE

PROBLEM TO BE SOLVED: To secure sufficient combustion energy while improving emission performance in realization of homogeneous combustion in a direct injection engine. SOLUTION: A crown surface 260 of a piston 26 is formed in roughly flat. A second cavity 262 extending closely to an outer circumfer...

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Bibliographische Detailangaben
Hauptverfasser:	AIGA SHOICHI, OOTA MUNEYUKI, TOSHINARI TAKASHI, FUJIWARA YOSHIYUKI, NOOI YOSHIHISA
Format:	Patent
Sprache:	eng
Schlagworte:	ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES BLASTING CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TOTRANSPORTATION COMBUSTION ENGINES COMBUSTION ENGINES IN GENERAL 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 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 secure sufficient combustion energy while improving emission performance in realization of homogeneous combustion in a direct injection engine. SOLUTION: A crown surface 260 of a piston 26 is formed in roughly flat. A second cavity 262 extending closely to an outer circumference of the piston 26 along a first cavity 261 is formed in an exhaust side of the first cavity 261 formed on the crown surface 260. Since a flame surface which grows in a roughly spherical shape in the first cavity 261can quickly grow to a bottom part side of the second cavity 262 by riding over to the adjoining second cavity 262, not only time for created flame to ride over a partition wall 263 from the first cavity 261 is shortened but also flame surface area is increased again by the second cavity 262. Consequently, lag of heat release rate and slowness combustion can be prevented and combustion torque can be increased. COPYRIGHT: (C)2007,JPO&INPIT