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http://dx.doi.org/10.9725/kstle.2005.21.2.083

A Basic Study on Piston-Ring Pack  

Chun, Sang-Myung (Dept. of Automotive Engineering, Hoseo University)
Publication Information
Tribology and Lubricants / v.21, no.2, 2005 , pp. 83-92 More about this Journal
Abstract
A piston assembly is very important because it directly receives the energy generated during combustion process. Surely, the friction and lubrication of piston-ring pack do an important role in the performance and fuel economy of an engine. In fact, the friction loss in piston-ring pack is the biggest portion to the whole engine friction. Therefore, the improvement of lubrication quality and friction loss in piston-ring pack will be directly related with the improvement in the performance and fuel economy of an engine. Meanwhile, the oil consumption and blow-by gas through piston-cylinder-ring crevices have to be controlled as less as possible. In these two aspects, the study on the optimized design of piston-ring pack has to be carried out. In this study, for the efficient design of piston-ring pack, it is focused to develop a basic computer program that predicts the inter-ring pressure, the motion of ring and the blow-by gas through a crevice volume model between adjacent rings, and the oil film thickness and the friction computed by lubrication theories.
Keywords
piston ring; blow-by gas;
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  • Reference
1 Kuo, T., Sellnau, M. C. and Theobald, M. A., 'Cal­culation of Flow in the Piston-Cylinder-Ring Crevices of a Homogeneous-Change Engine and Comparison with Experiment,' SAE Paper 890838,1989
2 McGeehanm J. A., 'A Literature Review of the Effects of Piston and Ring Friction and Lubrication Oil Viscos­ity on Fuel Economy,' SAE Paper No. 780673, 1978
3 Furuhama, S. and Tada, T., 'On the Flow of the Gas through the Piston Rings,' JSME Bullitin, Vol. 4, No. 16, 1961
4 Miltsios, G. K., Patterson, D. J. and Papanastasiou, T. C., 'Solution of the Lubrication Problem and Calcula­tion of the Friction Force on the Piston Ring,' J. of Tribology, Vol. 111, pp. 635-641, 1989   DOI
5 Furuhama, S., Hiruma, M. and Tsuzita, M., 'Piston Ring Motion and Its Influence on Engine Tribology,' SAE Paper No. 790860, 1979
6 Yun, J. E., Chung, Y., Chun, S. M. and Lee K. Y., 'Study of a Piston Ring Assembly Design through Experimental and Numerical Investigation of Inter­Ring Gas Pressure and Blow-By in a Four-Stroke SI Engine,' ICP-8-174, The 8th International Pacific Con­ference on Automotive Engineering, Pacific Conven­tion Plaza, Yokohama, Japan, 1995
7 Das, P. K., 'Analysis of Piston Ring Lubrication,' SAE Paper No. 760008, 1976
8 Namazian, M. and Heywood, J. B., 'Flow in the Pis­ton-Cylinder-Ring Crevices of a Spark-Ignition Engine: Effect on Hydrocarbon Emissions, Efficiency and Power,' SAE Transaction, Vol. 91, Section 1, pp. 261-288, 1982