Development of Hydrogen-Free Diamond-Like Carbon Coating for Piston Rings

The first piston ring application of a hydrogen-free diamond-like carbon (H-free DLC) coating to a mass-production gasoline engine reduces friction. It is found that the friction reduction effect between the cylinder bore and piston is 18%. When H-free DLC is applied to top ring, friction is over 10...

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Autores principales:	Tsuyoshi Higuchi, Yutaka Mabuchi, Hiroki Ichihara, Takashi Murata, Masaki Moronuki
Formato:	article
Lenguaje:	EN
Publicado:	Japanese Society of Tribologists 2017
Materias:	piston ring diamond-like carbon friction adhesion low viscosity oil Physics QC1-999 Engineering (General). Civil engineering (General) TA1-2040 Mechanical engineering and machinery TJ1-1570 Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/ed9e277b389444ffa34c1ce8d2790b92
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spelling	oai:doaj.org-article:ed9e277b389444ffa34c1ce8d2790b922021-11-05T09:20:26ZDevelopment of Hydrogen-Free Diamond-Like Carbon Coating for Piston Rings1881-219810.2474/trol.12.117https://doaj.org/article/ed9e277b389444ffa34c1ce8d2790b922017-07-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/trol/12/3/12_117/_pdf/-char/enhttps://doaj.org/toc/1881-2198The first piston ring application of a hydrogen-free diamond-like carbon (H-free DLC) coating to a mass-production gasoline engine reduces friction. It is found that the friction reduction effect between the cylinder bore and piston is 18%. When H-free DLC is applied to top ring, friction is over 10% reduced. The effect is larger than H-free DLC applied to oil rings. Because DLC as low friction coating is effective in a thin oil film and there are few oil at a large area near piston Top Dead Center (TDC). The friction reduction effect is enhanced when lower viscosity engine oil is used. In this study, the adhesion strength of H-free DLC coating on piston rings is also improved. It is shown that the relation between the adhesion strength and 2 coating parameters; i.e. providing substrate roughness and coating thickness. Adhesion strength is verified by test results using actual parts considered to piston ring environment by gasoline engine. Piston rings with low friction and high reliability are developed.Tsuyoshi HiguchiYutaka MabuchiHiroki IchiharaTakashi MurataMasaki MoronukiJapanese Society of Tribologistsarticlepiston ringdiamond-like carbonfrictionadhesionlow viscosity oilPhysicsQC1-999Engineering (General). Civil engineering (General)TA1-2040Mechanical engineering and machineryTJ1-1570ChemistryQD1-999ENTribology Online, Vol 12, Iss 3, Pp 117-122 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	piston ring diamond-like carbon friction adhesion low viscosity oil Physics QC1-999 Engineering (General). Civil engineering (General) TA1-2040 Mechanical engineering and machinery TJ1-1570 Chemistry QD1-999
spellingShingle	piston ring diamond-like carbon friction adhesion low viscosity oil Physics QC1-999 Engineering (General). Civil engineering (General) TA1-2040 Mechanical engineering and machinery TJ1-1570 Chemistry QD1-999 Tsuyoshi Higuchi Yutaka Mabuchi Hiroki Ichihara Takashi Murata Masaki Moronuki Development of Hydrogen-Free Diamond-Like Carbon Coating for Piston Rings
description	The first piston ring application of a hydrogen-free diamond-like carbon (H-free DLC) coating to a mass-production gasoline engine reduces friction. It is found that the friction reduction effect between the cylinder bore and piston is 18%. When H-free DLC is applied to top ring, friction is over 10% reduced. The effect is larger than H-free DLC applied to oil rings. Because DLC as low friction coating is effective in a thin oil film and there are few oil at a large area near piston Top Dead Center (TDC). The friction reduction effect is enhanced when lower viscosity engine oil is used. In this study, the adhesion strength of H-free DLC coating on piston rings is also improved. It is shown that the relation between the adhesion strength and 2 coating parameters; i.e. providing substrate roughness and coating thickness. Adhesion strength is verified by test results using actual parts considered to piston ring environment by gasoline engine. Piston rings with low friction and high reliability are developed.
format	article
author	Tsuyoshi Higuchi Yutaka Mabuchi Hiroki Ichihara Takashi Murata Masaki Moronuki
author_facet	Tsuyoshi Higuchi Yutaka Mabuchi Hiroki Ichihara Takashi Murata Masaki Moronuki
author_sort	Tsuyoshi Higuchi
title	Development of Hydrogen-Free Diamond-Like Carbon Coating for Piston Rings
title_short	Development of Hydrogen-Free Diamond-Like Carbon Coating for Piston Rings
title_full	Development of Hydrogen-Free Diamond-Like Carbon Coating for Piston Rings
title_fullStr	Development of Hydrogen-Free Diamond-Like Carbon Coating for Piston Rings
title_full_unstemmed	Development of Hydrogen-Free Diamond-Like Carbon Coating for Piston Rings
title_sort	development of hydrogen-free diamond-like carbon coating for piston rings
publisher	Japanese Society of Tribologists
publishDate	2017
url	https://doaj.org/article/ed9e277b389444ffa34c1ce8d2790b92
work_keys_str_mv	AT tsuyoshihiguchi developmentofhydrogenfreediamondlikecarboncoatingforpistonrings AT yutakamabuchi developmentofhydrogenfreediamondlikecarboncoatingforpistonrings AT hirokiichihara developmentofhydrogenfreediamondlikecarboncoatingforpistonrings AT takashimurata developmentofhydrogenfreediamondlikecarboncoatingforpistonrings AT masakimoronuki developmentofhydrogenfreediamondlikecarboncoatingforpistonrings
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Development of Hydrogen-Free Diamond-Like Carbon Coating for Piston Rings

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