PISTON FOR INTERNAL COMBUSTION ENGINE

PROBLEM TO BE SOLVED: To provide a piston for an internal combustion engine capable of further effectively reducing friction resistance to a cylinder inner wall of a skirt portion. SOLUTION: On a thrust surface 3a of the skirt portion 3 pressing against the cylinder inner call Ca during reciprocatin...

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Bibliographische Detailangaben
1. Verfasser:	KAWASE NAOKAZU
Format:	Patent
Sprache:	eng
Schlagworte:	ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES BLASTING COMBUSTION ENGINES CYLINDERS CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS LIGHTING MECHANICAL ENGINEERING PISTONS SEALINGS THERMAL INSULATION IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a piston for an internal combustion engine capable of further effectively reducing friction resistance to a cylinder inner wall of a skirt portion. SOLUTION: On a thrust surface 3a of the skirt portion 3 pressing against the cylinder inner call Ca during reciprocating of a piston P, a large number of portal oil guide walls 11 defining oil pockets having inlets 13a opening in a moving direction of the piston P is formed. Oil interposed between the skirt portion 3 and the cylinder inner wall Ca is introduced into the oil pockets 13 with the movement of the piston P, thereby constituting a hydrodynamic fluid bearing between the thrust surface 3a and the cylinder inner wall Ca. COPYRIGHT: (C)2009,JPO&INPIT