Estudio numérico del efecto de perfil del primer anillo del pistón de compresión sobre el rendimiento hidrodinámico del lubricante de un motor diésel

Brahim Menacer; Mostefa Bouchetara

doi:10.3989/revmetalm.177

Authors

Brahim Menacer Ecole Supérieure en Génie Electrique et Energétique - ESGEE - Laboratory of Gas Combustion and Environment, Department of Mechanical Engineering, University of Sciences and the Technology of Oran https://orcid.org/0000-0002-7922-1847
Mostefa Bouchetara Laboratory of Gas Combustion and Environment, Department of Mechanical Engineering, University of Sciences and the Technology of Oran https://orcid.org/0000-0001-6546-9086

DOI:

https://doi.org/10.3989/revmetalm.177

Keywords:

Cylinder liner, Diesel engine, Gas dynamics, Hydrodynamic lubrication, Oil film thickness, Piston ring, Power losses

Abstract

For different operating conditions of an internal combustion engine, the piston-ring-liner compartment represents one of the largest sources of friction and power losses. The present paper is a contribution to evaluate the effect of the compression ring profile on the main tribological performance of the lubricant in a four-stroke diesel engine. A one-dimensional analysis was developed using GT-Suite software for the hydrodynamic lubrication between the compression piston ring and the cylinder wall. A numerical method was applied to analyze the influence of different ring geometrical designs during the working cycle on oil film thickness, frictional force, power losses. The Takigushi simulation model was used to validate and verify the developed numerical model. The results obtained showed a relatively good qualitative and quantitative compatibility between the two applied models. The developed numerical model allows the investigation of the influence of ring design parameters to improve the tribological performance of piston engines.

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