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Modeling of Oil Transport between Piston Skirt and Cylinder Liner in Internal Combustion Engines
ISSN: 0148-7191, e-ISSN: 2688-3627
Published April 2, 2019 by SAE International in United States
This content contains downloadable datasetsAnnotation ability available
The distribution of lubricating oil plays a critical role in determining the friction between piston skirt and cylinder liner, which is one of the major contributors to the total friction loss in internal combustion engines. In this work, based upon the experimental observation an existing model for the piston secondary motion and skirt lubrication was improved with a physics-based model describing the oil film separation from full film to partial film. Then the model was applied to a modern turbo-charged SI engine. The piston-skirt FMEP predicted by the model decreased with larger installation clearance, which was also observed from the measurements using IMEP method at the rated. It was found that the main period of the cycle exhibiting friction reduction is in the expansion stroke when the skirt only contacts the thrust side for all tested installation clearances. The main reason for lower skirt friction with larger clearance is greater amount of oil available during the expansion stroke.
CitationMeng, Z., Ahling, S., and Tian, T., "Modeling of Oil Transport between Piston Skirt and Cylinder Liner in Internal Combustion Engines," SAE Technical Paper 2019-01-0590, 2019, https://doi.org/10.4271/2019-01-0590.
Data Sets - Support Documents
|[Unnamed Dataset 1]|
- Richardson, D.E., “Review of Power Cylinder Friction for Diesel Engines,” Journal of Engineering for Gas Turbines and Power 122(4):506-519, 2000, doi:10.1115/1.1290592.
- Knoll, G.D. and Peeken, H.J., “Hydrodynamic Lubrication of Piston Skirts,” Journal of Lubrication Technology 104(4):504-508, 1982, doi:10.1115/1.3253271.
- Oh, K.P., Li, C.H., and Goenka, P.K., “Elastohydrodynamic Lubrication of Piston Skirts,” ASME. J. Tribol. 109(2):356-362, 1987, doi:10.1115/1.3261366.
- Dursunkaya, Z., Keribar, R., and Ganapathy, V., “A Model of Piston Secondary Motion and Elastohydrodynamic Skirt Lubrication,” ASME. J. Tribol. 116(4):777-785, 1994, doi:10.1115/1.2927332.
- Duyar, M., Bell, D., and Perchanok, M., “A Comprehensive Piston Skirt Lubrication Model Using a Mass Conserving EHL Algorithm,” SAE Technical Paper 2005-01-1640, 2005, doi:10.4271/2005-01-1640.
- McClure, F., “Numerical Modeling of Piston Secondary Motion and Skirt Lubrication in Internal Combustion Engines,” Ph.D. dissertation, Massachusetts Institute of Technology, 2007.
- Patir, N. and Cheng, H.S., “An Average Flow Model for Determining Effects of Three-Dimensional Roughness on Partial Hydrodynamic Lubrication,” Journal of Lubrication Technology 100(1):12-17, 1978, doi:10.1115/1.3453103.
- Elrod, H.G., “A Cavitation Algorithm,” Journal of Lubrication Technology 103(3):350-354, 1981, doi:10.1115/1.3251669.
- Bai, D., “Modeling Piston Skirt Lubrication in Internal Combustion Engines,” Ph.D. dissertation, Massachusetts Institute of Technology, 2012.
- Totaro, P., “Modeling Piston Secondary Motion and Skirt Lubrication with Applications,” Master’s thesis, Massachusetts Institute of Technology, 2014.
- Meng, Z., “Numerical Investigation of the Piston Skirt Lubrication in Heavy Duty Diesel Engines,” Master’s thesis, Massachusetts Institute of Technology, 2017.
- Thirouard, B., “Characterization and Modeling of the Fundamental Aspects of Oil Transport in the Piston Ring Pack of Internal Combustion Engines,” Ph.D. dissertation, Massachusetts Institute of Technology, 2001.
- Przesmitzki, S., “Characterization of Oil Transport in the Power Cylinder of Internal Combustion Engines during Steady State and Transient Operation,” Ph.D. dissertation, Massachusetts Institute of Technology, 2008.
- Zanghi, E., “Analysis of Oil Flow Mechanisms in Internal Combustion Engines via High Speed Laser Induced Fluorescence (LIF) Spectroscopy,” Master’s thesis, Massachusetts Institute of Technology, 2014.
- Zanghi, E. and Tian, T., “Development of a High Speed Laser Induced Fluorescence (HSLIF) System in a Single Cylinder Engine for Oil Transport Studies,” SAE Technical Paper 2016-01-0642, 2016, doi:10.4271/2016-01-0642.
- Westerfield, Z., Totaro, P., Kim, D., and Tian, T., “An Experimental Study of Piston Skirt Roughness and Profiles on Piston Friction Using the Floating Liner Engine,” SAE Technical Paper 2016-01-1043, 2016, doi:10.4271/2016-01-1043.
- Totaro, P., Westerfield, Z., and Tian, T., “Introducing a New Piston Skirt Profile to Reduce Engine Friction,” SAE Technical Paper 2016-01-1046, 2016, doi:10.4271/2016-01-1046.
- Coyne, J.C. and Elrod, H.G., “Conditions for the Rupture of a Lubricating Film. Part I: Theoretical Model,” Journal of Lubrication Technology 92(3):451-456, 1970, doi:10.1115/1.3451441.
- Meiser, J., Deuss, T., Ehnis, H., and Künzel, R., “Friction Power Measurements of a Fired Gasoline Engine Influence of Installation Clearance and Piston Pin Offset,” MTZ Worldwide 75(12):24-29, 2014, doi:10.1007/s38313-014-0261-2.