Influence of the position of oil drain holes of a piston on lubricating oil consumption

Hiroki Hasegawa, Koji Kikuhara, Akemi Ito, Shunsuke Nishijima, Masatsugu Inui, Hirotaka Akamatsu

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

An increase in lubricating oil consumption in an engine causes an increase in particulate matters in exhaust gases, poisoning the catalyst of after treatment devices, abnormal combustion in a turbo-changed gasoline engine and so on. Recent trend of low friction of a piston and piston ring tends to increase in lubricating oil consumption. Therefore reducing oil consumption is required strongly. It is known that oil pressure generated under the oil ring affects lubricating oil consumption. It is also known that the position of oil drain holes affects lubricating oil consumption. In this study, the effect of the position of oil drain holes on oil pressure under the oil ring and lubricating oil consumption was investigated. The oil pressure under the oil ring is measured using fiber optic pressure sensors and pressure generation mechanisms were investigated. Lubricating oil consumption was also measured using sulfur tracer method and the effects of oil drain holes against the oil pressure under the oil ring were evaluated. Four types of arrangement of oil drain holes were tested. The oil pressure variations under the oil ring in the circumferential direction was measured using a gasoline engine. An increase in oil pressure was found during down-stroke of the piston. The lowest oil pressure was found for the piston with four oil drain holes. Two holes nearby the front / rear end of the piston skirt showed relatively lower pressure. The measured results of oil consumption showed good agreement to measured oil pressure under the oil ring. It was found that oil pressure under the oil ring affected oil consumption, and oil drain holes set near the front / rear end of the piston skirt were effective for reducing oil consumption.

Original languageEnglish
Title of host publicationEmissions Control Systems; Instrumentation, Controls, and Hybrids; Numerical Simulation; Engine Design and Mechanical Development
PublisherAmerican Society of Mechanical Engineers
ISBN (Electronic)9780791858325
DOIs
Publication statusPublished - 2017
Externally publishedYes
EventASME 2017 Internal Combustion Engine Division Fall Technical Conference, ICEF 2017 - Seattle, United States
Duration: 2017 Oct 152017 Oct 18

Publication series

NameASME 2017 Internal Combustion Engine Division Fall Technical Conference, ICEF 2017
Volume2

Conference

ConferenceASME 2017 Internal Combustion Engine Division Fall Technical Conference, ICEF 2017
Country/TerritoryUnited States
CitySeattle
Period17/10/1517/10/18

ASJC Scopus subject areas

  • Fuel Technology

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