Piston for internal combustion engine

A piston (3) for an internal combustion engine (1) of an automotive vehicle. The piston (3) has a piston ring (4) and a piston skirt section (3a) each of which has a sliding section in slidable contact with a cylinder bore section (2a) of a cylinder block (2) in presence of a lubricating oil. The cy...

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Bibliographische Detailangaben
1. Verfasser:	NISHIMURA KIMIO,MABUCHI YUTAKA,HAMADA TAKAHIRO,KANO MAKOTO,MIYAKE HIDENORI,OTA TOMOHITO
Format:	Patent
Sprache:	eng
Schlagworte:	ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES BLASTING CHEMICAL SURFACE TREATMENT CHEMISTRY COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL COMBUSTION ENGINES CYLINDERS CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES DIFFUSION TREATMENT OF METALLIC MATERIAL ENGINEERING ELEMENTS AND UNITS FUELS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL LIGHTING LUBRICANTS LUBRICATING COMPOSITIONS MACHINES OR ENGINES FOR LIQUIDS MECHANICAL ENGINEERING METALLURGY OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR PEAT PETROLEUM, GAS OR COKE INDUSTRIES PISTONS POSITIVE-DISPLACEMENT ENGINES DRIVEN BY LIQUIDS PRODUCING MECHANICAL POWER SEALINGS SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION TECHNICAL GASES CONTAINING CARBON MONOXIDE THERMAL INSULATION IN GENERAL USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATINGINGREDIENTS IN A LUBRICATING COMPOSITION WEAPONS WIND, SPRING WEIGHT AND MISCELLANEOUS MOTORS
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Beschreibung
Zusammenfassung:	A piston (3) for an internal combustion engine (1) of an automotive vehicle. The piston (3) has a piston ring (4) and a piston skirt section (3a) each of which has a sliding section in slidable contact with a cylinder bore section (2a) of a cylinder block (2) in presence of a lubricating oil. The cylinder bore section (2a) is formed of eutectic or hyper-eutectic aluminum alloy. Additionally, a hard carbon thin film is coated on the sliding section of the piston (3) and contains hydrogen atom in an amount of not more than 1 atomic %. Here, the lubricating oil contains at least one selected from the group consisting of ashless fatty acid ester friction modifier, ashless aliphatic amine friction modifier, polybutenyl succinimide, derivative of polybutenyl succinimide, zinc dithiophosphate, and derivative of zinc dithiophosphate.