Analyzing the Surface Roughness Effects on Piston Skirt EHL in Initial Engine Start-Up Using Different Viscosity Grade Oils
The absence of fully developed fluid film lubrication between Pistonand Liner surfaces is responsible for high friction and wear at initial engine start‐up. In this paper flow factor method is used in two dimensional Reynolds’ equation to model the effects of surfaceroughness characteristics on Pist...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
University of Kragujevac
2013-06-01
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| Series: | Tribology in Industry |
| Subjects: | |
| Online Access: | http://www.tribology.fink.rs/journals/2013/2013-2/7.pdf |
| _version_ | 1828492807315128320 |
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| author | M. Gulzar S.A. Qasim R.A. Mufti |
| author_facet | M. Gulzar S.A. Qasim R.A. Mufti |
| author_sort | M. Gulzar |
| collection | DOAJ |
| description | The absence of fully developed fluid film lubrication between Pistonand Liner surfaces is responsible for high friction and wear at initial engine start‐up. In this paper flow factor method is used in two dimensional Reynolds’ equation to model the effects of surfaceroughness characteristics on Piston Skirt elastohydrodynamiclubrication. The contact of surface asperities between the twosurfaces and its after effects on EHL of piston skirt is investigated. For this purpose, two different grade oils are used to show the changing effects of viscosity combined with surface roughness on different parameters including film thickness, eccentricities and hydrodynamic pressures. The results of the presented model shows considerable effects on film thickness of rough piston skirt, hydrodynamic pressures and eccentricities profilesfor 720 degrees crank angle. |
| first_indexed | 2024-12-11T11:27:10Z |
| format | Article |
| id | doaj.art-3d92ce7e5f544636a4800917d42b3e60 |
| institution | Directory Open Access Journal |
| issn | 0354-8996 2217-7965 |
| language | English |
| last_indexed | 2024-12-11T11:27:10Z |
| publishDate | 2013-06-01 |
| publisher | University of Kragujevac |
| record_format | Article |
| series | Tribology in Industry |
| spelling | doaj.art-3d92ce7e5f544636a4800917d42b3e602022-12-22T01:08:58ZengUniversity of KragujevacTribology in Industry0354-89962217-79652013-06-01352141147Analyzing the Surface Roughness Effects on Piston Skirt EHL in Initial Engine Start-Up Using Different Viscosity Grade OilsM. GulzarS.A. QasimR.A. MuftiThe absence of fully developed fluid film lubrication between Pistonand Liner surfaces is responsible for high friction and wear at initial engine start‐up. In this paper flow factor method is used in two dimensional Reynolds’ equation to model the effects of surfaceroughness characteristics on Piston Skirt elastohydrodynamiclubrication. The contact of surface asperities between the twosurfaces and its after effects on EHL of piston skirt is investigated. For this purpose, two different grade oils are used to show the changing effects of viscosity combined with surface roughness on different parameters including film thickness, eccentricities and hydrodynamic pressures. The results of the presented model shows considerable effects on film thickness of rough piston skirt, hydrodynamic pressures and eccentricities profilesfor 720 degrees crank angle.http://www.tribology.fink.rs/journals/2013/2013-2/7.pdfEHLPiston skirtFlowfactorAsperityHydrodynamicVogelpohl parameter |
| spellingShingle | M. Gulzar S.A. Qasim R.A. Mufti Analyzing the Surface Roughness Effects on Piston Skirt EHL in Initial Engine Start-Up Using Different Viscosity Grade Oils Tribology in Industry EHL Piston skirt Flowfactor Asperity Hydrodynamic Vogelpohl parameter |
| title | Analyzing the Surface Roughness Effects on Piston Skirt EHL in Initial Engine Start-Up Using Different Viscosity Grade Oils |
| title_full | Analyzing the Surface Roughness Effects on Piston Skirt EHL in Initial Engine Start-Up Using Different Viscosity Grade Oils |
| title_fullStr | Analyzing the Surface Roughness Effects on Piston Skirt EHL in Initial Engine Start-Up Using Different Viscosity Grade Oils |
| title_full_unstemmed | Analyzing the Surface Roughness Effects on Piston Skirt EHL in Initial Engine Start-Up Using Different Viscosity Grade Oils |
| title_short | Analyzing the Surface Roughness Effects on Piston Skirt EHL in Initial Engine Start-Up Using Different Viscosity Grade Oils |
| title_sort | analyzing the surface roughness effects on piston skirt ehl in initial engine start up using different viscosity grade oils |
| topic | EHL Piston skirt Flowfactor Asperity Hydrodynamic Vogelpohl parameter |
| url | http://www.tribology.fink.rs/journals/2013/2013-2/7.pdf |
| work_keys_str_mv | AT mgulzar analyzingthesurfaceroughnesseffectsonpistonskirtehlininitialenginestartupusingdifferentviscositygradeoils AT saqasim analyzingthesurfaceroughnesseffectsonpistonskirtehlininitialenginestartupusingdifferentviscositygradeoils AT ramufti analyzingthesurfaceroughnesseffectsonpistonskirtehlininitialenginestartupusingdifferentviscositygradeoils |