Low-tension piston ring assembly

The utility model discloses a low-tension piston ring assembly, which comprises a piston body, a first piston ring groove, a second piston ring groove, an oil ring groove, a first piston ring, a second piston ring and an oil ring, wherein the first piston ring groove, the second piston ring groove,...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	ZHANG XING, HUANG ZHOUWEI
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES BLASTING COMBUSTION ENGINES CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS LIGHTING MECHANICAL ENGINEERING WEAPONS
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Beschreibung
Zusammenfassung:	The utility model discloses a low-tension piston ring assembly, which comprises a piston body, a first piston ring groove, a second piston ring groove, an oil ring groove, a first piston ring, a second piston ring and an oil ring, wherein the first piston ring groove, the second piston ring groove, the oil ring groove, the first piston ring, the second piston ring and the oil ring are arranged on the excircle surface of the piston body. The excircle surface of the first piston ring is in an arc shape, and a chamfer is arranged between an inner wall of the excircle surface of the first piston ring and the upper end face of the first piston ring. The section of the second piston ring is in a trapezoidal shape with the lower right corner provided with an arc-shaped notch, the upper edge and the right edge of the trapezoid are respectively perpendicular to the left edge of the trapezoid, and the right edge of the trapezoid is inclined leftwards. The section of the oil ring is in an ordinary flat key shape formed