Numerical Study of Power Loss and Lubrication of Connecting Rod Big-End
A hydrodynamic lubrication analysis for connecting rod big-end bearing is conducted. The effects of engine speed, operating condition, lubricant viscosity and oil temperature on tribological performance of big-end bearing have been examined. Force equilibrium is solved to define instantaneous eccent...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2019-06-01
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| Series: | Lubricants |
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| Online Access: | https://www.mdpi.com/2075-4442/7/6/47 |
| _version_ | 1797999162171588608 |
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| author | Abbas Razavykia Cristiana Delprete Paolo Baldissera |
| author_facet | Abbas Razavykia Cristiana Delprete Paolo Baldissera |
| author_sort | Abbas Razavykia |
| collection | DOAJ |
| description | A hydrodynamic lubrication analysis for connecting rod big-end bearing is conducted. The effects of engine speed, operating condition, lubricant viscosity and oil temperature on tribological performance of big-end bearing have been examined. Force equilibrium is solved to define instantaneous eccentricity between journal and bearing to have accurate estimation of oil film thickness at interface of connecting rod big-end bearing and crankpin. Connecting rod big-end is treated as <inline-formula> <math display="inline"> <semantics> <mi>π</mi> </semantics> </math> </inline-formula> film hydrodynamic journal bearing and finite difference scheme is applied to calculate generated hydrodynamic pressure and frictional power loss at each crank angle. Beside the development of analytical formulation, well-known Mobility model introduced by Booker has been employed to be compared with the analytical model. The presented analytical model reduces the complexity and the numerical effort with respect to Mobility method, thus shortening the computation time. The simulation results show good agreement between analytical model, Mobility approach and experimental data. |
| first_indexed | 2024-04-11T11:00:13Z |
| format | Article |
| id | doaj.art-ec82f0e3e0e24d1f83d0db6f94979022 |
| institution | Directory Open Access Journal |
| issn | 2075-4442 |
| language | English |
| last_indexed | 2024-04-11T11:00:13Z |
| publishDate | 2019-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Lubricants |
| spelling | doaj.art-ec82f0e3e0e24d1f83d0db6f949790222022-12-22T04:28:39ZengMDPI AGLubricants2075-44422019-06-01764710.3390/lubricants7060047lubricants7060047Numerical Study of Power Loss and Lubrication of Connecting Rod Big-EndAbbas Razavykia0Cristiana Delprete1Paolo Baldissera2Department of Mechanical and Aerospace Engineering, Politecnico di Torino, 10129 Torino, ItalyDepartment of Mechanical and Aerospace Engineering, Politecnico di Torino, 10129 Torino, ItalyDepartment of Mechanical and Aerospace Engineering, Politecnico di Torino, 10129 Torino, ItalyA hydrodynamic lubrication analysis for connecting rod big-end bearing is conducted. The effects of engine speed, operating condition, lubricant viscosity and oil temperature on tribological performance of big-end bearing have been examined. Force equilibrium is solved to define instantaneous eccentricity between journal and bearing to have accurate estimation of oil film thickness at interface of connecting rod big-end bearing and crankpin. Connecting rod big-end is treated as <inline-formula> <math display="inline"> <semantics> <mi>π</mi> </semantics> </math> </inline-formula> film hydrodynamic journal bearing and finite difference scheme is applied to calculate generated hydrodynamic pressure and frictional power loss at each crank angle. Beside the development of analytical formulation, well-known Mobility model introduced by Booker has been employed to be compared with the analytical model. The presented analytical model reduces the complexity and the numerical effort with respect to Mobility method, thus shortening the computation time. The simulation results show good agreement between analytical model, Mobility approach and experimental data.https://www.mdpi.com/2075-4442/7/6/47connecting rodtribologyhydrodynamic lubricationbig-end bearing |
| spellingShingle | Abbas Razavykia Cristiana Delprete Paolo Baldissera Numerical Study of Power Loss and Lubrication of Connecting Rod Big-End Lubricants connecting rod tribology hydrodynamic lubrication big-end bearing |
| title | Numerical Study of Power Loss and Lubrication of Connecting Rod Big-End |
| title_full | Numerical Study of Power Loss and Lubrication of Connecting Rod Big-End |
| title_fullStr | Numerical Study of Power Loss and Lubrication of Connecting Rod Big-End |
| title_full_unstemmed | Numerical Study of Power Loss and Lubrication of Connecting Rod Big-End |
| title_short | Numerical Study of Power Loss and Lubrication of Connecting Rod Big-End |
| title_sort | numerical study of power loss and lubrication of connecting rod big end |
| topic | connecting rod tribology hydrodynamic lubrication big-end bearing |
| url | https://www.mdpi.com/2075-4442/7/6/47 |
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