Piston For Internal-Combustion Engine And Combination Of Piston And Piston Ring For Internal-Combustion Engine

A piston for an internal-combustion engine includes a through-hole communicating with the inner space of the piston formed in an oil-ring groove into which an oil ring is fitted and a through-hole connected with a second-ring groove, the through-hole having an opening spreading from the lower portio...

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Bibliographische Detailangaben
Hauptverfasser:	ABE TOMOAKI, HITOSUGI HIDESHI
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:	A piston for an internal-combustion engine includes a through-hole communicating with the inner space of the piston formed in an oil-ring groove into which an oil ring is fitted and a through-hole connected with a second-ring groove, the through-hole having an opening spreading from the lower portion of the bottom of the second-ring groove in a top-to-bottom direction of the piston to the lower surface of the second-ring groove and linearly extending to the inner space of the piston; and a combination of the piston and piston rings of the three-ring type for an internal-combustion engine, the end gaps of compression rings among the piston rings being set in a predetermined range.