Piston for internal combustion engine

• Main Authors: SHIMURA YASUO, NOMURA AKISHI
• Format: Patent
• Language: English
• Published: 11.12.2002
• Edition: 7
• Subjects: ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES; BLASTING; COMBUSTION ENGINES; CRANKCASE VENTILATING; CYLINDERS; CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ENGINE PLANTS IN GENERAL; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; LIGHTING; LUBRICATING INTERNAL COMBUSTION ENGINES; LUBRICATING OF MACHINES OR ENGINES IN GENERAL; MACHINES OR ENGINES IN GENERAL; MECHANICAL ENGINEERING; PISTONS; SEALINGS; STEAM ENGINES; THERMAL INSULATION IN GENERAL; WEAPONS

To lighten and miniaturize a piston and form a piston for a high-speed revolution. A top ring groove and an oil ring groove are formed on the periphery of a crown and a lubricator is provided inside the oil ring groove. A pair of piston pin bosses are provided continuously under the crown in opposite positions and a skirt is provided apart by 90°. The lower end of the skirt is located on the upside of the lower end of the piston pin boss and a lubricator is provided in an upper part of the skirt, under and in the vicinity of the oil ring groove.