Technical Trend of Friction Reduction in Engine Bearings

Currently, the demand for improved fuel consumption rates in automobiles has increased because of growing concerns related to global warming and energy conservation. Because of these concerns, the number of automobiles equipped with hybrid systems, also known as hybrid electric vehicles (HEVs), is i...

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Autores principales:	Shu Kamiya, Toru Desaki
Formato:	article
Lenguaje:	EN
Publicado:	Japanese Society of Tribologists 2017
Materias:	engine bearings friction reduction resin coatings cold conditions 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/7e75b4b27e7e46bd99a56c12aef4c74d
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spelling	oai:doaj.org-article:7e75b4b27e7e46bd99a56c12aef4c74d2021-11-05T09:20:26ZTechnical Trend of Friction Reduction in Engine Bearings1881-219810.2474/trol.12.89https://doaj.org/article/7e75b4b27e7e46bd99a56c12aef4c74d2017-07-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/trol/12/3/12_89/_pdf/-char/enhttps://doaj.org/toc/1881-2198Currently, the demand for improved fuel consumption rates in automobiles has increased because of growing concerns related to global warming and energy conservation. Because of these concerns, the number of automobiles equipped with hybrid systems, also known as hybrid electric vehicles (HEVs), is increasing. In hybrid electric vehicles, a reduction in engine bearing friction is required to improve fuel economy, particularly under the operating conditions with low oil temperature. In this study, two cutting-edge technical methods used for reducing engine-bearing friction are described. One method utilizes a resin coating as a low-friction material, which is including graphite in the coating instead of MoS2 and CaCO3. The other utilizes a Partial Twin Groove (PTG) bearing as a surface design. PTG bearing has an effect of quick warm-up oils on the bearing surface by reducing oil leakage. Narrow grooves located on the bearing surface enhance the suction of oil from the outside of the bearing to the inner surface. As a result, engine oil recirculates in the bearing and the oil temperature is quickly raised, particularly under cold conditions. This design offers a fuel efficiency of approximately 0.14%.Shu KamiyaToru DesakiJapanese Society of Tribologistsarticleengine bearingsfriction reductionresin coatingscold conditionsPhysicsQC1-999Engineering (General). Civil engineering (General)TA1-2040Mechanical engineering and machineryTJ1-1570ChemistryQD1-999ENTribology Online, Vol 12, Iss 3, Pp 89-93 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	engine bearings friction reduction resin coatings cold conditions Physics QC1-999 Engineering (General). Civil engineering (General) TA1-2040 Mechanical engineering and machinery TJ1-1570 Chemistry QD1-999
spellingShingle	engine bearings friction reduction resin coatings cold conditions Physics QC1-999 Engineering (General). Civil engineering (General) TA1-2040 Mechanical engineering and machinery TJ1-1570 Chemistry QD1-999 Shu Kamiya Toru Desaki Technical Trend of Friction Reduction in Engine Bearings
description	Currently, the demand for improved fuel consumption rates in automobiles has increased because of growing concerns related to global warming and energy conservation. Because of these concerns, the number of automobiles equipped with hybrid systems, also known as hybrid electric vehicles (HEVs), is increasing. In hybrid electric vehicles, a reduction in engine bearing friction is required to improve fuel economy, particularly under the operating conditions with low oil temperature. In this study, two cutting-edge technical methods used for reducing engine-bearing friction are described. One method utilizes a resin coating as a low-friction material, which is including graphite in the coating instead of MoS2 and CaCO3. The other utilizes a Partial Twin Groove (PTG) bearing as a surface design. PTG bearing has an effect of quick warm-up oils on the bearing surface by reducing oil leakage. Narrow grooves located on the bearing surface enhance the suction of oil from the outside of the bearing to the inner surface. As a result, engine oil recirculates in the bearing and the oil temperature is quickly raised, particularly under cold conditions. This design offers a fuel efficiency of approximately 0.14%.
format	article
author	Shu Kamiya Toru Desaki
author_facet	Shu Kamiya Toru Desaki
author_sort	Shu Kamiya
title	Technical Trend of Friction Reduction in Engine Bearings
title_short	Technical Trend of Friction Reduction in Engine Bearings
title_full	Technical Trend of Friction Reduction in Engine Bearings
title_fullStr	Technical Trend of Friction Reduction in Engine Bearings
title_full_unstemmed	Technical Trend of Friction Reduction in Engine Bearings
title_sort	technical trend of friction reduction in engine bearings
publisher	Japanese Society of Tribologists
publishDate	2017
url	https://doaj.org/article/7e75b4b27e7e46bd99a56c12aef4c74d
work_keys_str_mv	AT shukamiya technicaltrendoffrictionreductioninenginebearings AT torudesaki technicaltrendoffrictionreductioninenginebearings
_version_	1718444419576758272

Technical Trend of Friction Reduction in Engine Bearings

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