COMBUSTION DEVICE OF DIESEL ENGINE

PURPOSE:To intensify back squish flow quickly at the end of fuel injection period by determining a ratio of aperture diameter at an upper part of a combustion chamber to a piston diameter so as to be small, and by taking the depth of the combustion chamber and the inclination angle of a side wall so...

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Bibliographische Detailangaben
Hauptverfasser:	IMAMORI TOSHIICHI, OHASHI RYOICHI, SENDA JIRO
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:	PURPOSE:To intensify back squish flow quickly at the end of fuel injection period by determining a ratio of aperture diameter at an upper part of a combustion chamber to a piston diameter so as to be small, and by taking the depth of the combustion chamber and the inclination angle of a side wall so as to be large. CONSTITUTION:In a piston 4, an aperture ratio d2/D of an upper aperture diameter d2 to a piston diameter D is taken so as to be small, and the depth of a combustion chamber 5 and an inclination angle theta2 of a side wall 11 are taken so as to be large. By this constitution, velocity of back squish flow is increased. Consequently, at the end of fuel injection period, fuel spray, together with combustion gas and flames, is injected actively into a clearance A between a top surface of the piston 4 and a cylinder head at a high speed, and is burnt rapidly by making use of the air inside the clearance A.