Piston ring

Provided is a piston ring with excellent anti-spalling, anti-friction, and thermal conductivity properties. A piston ring (1) comprises: an annular body (2) having a pair of side faces (2a, 2b), an outer circumferential face (2d), and an inner circumferential face (2c); and a hard coating (11) provi...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	SATO DAISUKE, KAMURA SHUICHI
Format:	Patent
Sprache:	chi ; 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:	Provided is a piston ring with excellent anti-spalling, anti-friction, and thermal conductivity properties. A piston ring (1) comprises: an annular body (2) having a pair of side faces (2a, 2b), an outer circumferential face (2d), and an inner circumferential face (2c); and a hard coating (11) provided on the outer circumferential face (2d). The following expression (1) is satisfied when the width of the body (2) in a first direction (D1) perpendicular to the pair of side faces (2a, 2b) is h1 mm, the width of the hard coating (11) in the first direction (D1) is W mm, and the thickness of the hard coating (11) in a second direction (D2) perpendicular to the outer circumferential face (2d) is L mm. 0.003