The Effect of the Position and Number of Oil Drain Hole on the Oil Pressure Generating under the Oil Ring with Relation to Oil Consumption

エンジンのオイル消費に関係するオイルリング下の 油圧発生メカニズムおよびその低減方法に関する研究

Oil drain holes of a piston affects engine oil consumption, but there is no theoretical guidance for optimal design. This study aimed for clarifying the effect of design of oil-drain-hole on oil behavior under the oil-ring to estimate mechanism for oil pressure generating. 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 when the piston with four oil-drain-hole. Two holes set nearly front / near end of the piston-skirt showed relatively lower pressure.エンジンのピストンに装着されるオイルリングの下に発生する圧力は,オイル消費に影響を及ぼす.そこで圧力測定により発生メカニズム検討およびピストン設計が及ぼす影響の調査を行った.当該部圧力は,運転条件や流入する潤滑油量などの影響を受けること,オイルリング周辺の油穴は圧力低減に有効であることが示された.


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  • Accession Number: 01672697
  • Record Type: Publication
  • Source Agency: Japan Science and Technology Agency (JST)
  • Files: TRIS, JSTAGE
  • Created Date: May 15 2018 3:02PM