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Variation of Piston Ring Oil Film Thickness in an Internal Combustion Engine - Comparison Between Thrust and Anti-Thrust Sides
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Abstract
This paper describes a measurement method using laser induced fluorescence we have developed for simple simultaneous measurements of piston ring oil film thickness at plural points for internal combustion engines. The findings obtained by the measurements of oil film thickness on both thrust and anti-thrust sides of the piston for a mono-cylinder compact diesel engine using this new measurement method are also discussed in this paper. One of main findings is that the oil film thickness of each ring on both sides differs markedly in terms of the absolute value and the stroke- to-stroke variation. It is found that this difference in oil film thickness is caused by the difference in the amount of lubricating oil supplied to the oil ring, and the effect is greater than that of engine speed or load.
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Citation
Takiguchi, M., Nakayama, K., Furuhama, S., and Yoshida, H., "Variation of Piston Ring Oil Film Thickness in an Internal Combustion Engine - Comparison Between Thrust and Anti-Thrust Sides," SAE Technical Paper 980563, 1998, https://doi.org/10.4271/980563.Also In
References
- Moore S. L. et al. “The Starved Lubrication of Piston Ring in a Diesel Engine” I Mech E Journal 20 6 1978
- Furuhama S. et al. “Measurement of Piston Ring Oil Film Thickness in an Operating Engine” ASLE Preprint 1982
- Wong V. W. et al. “Experimental survey of Lubricant Film Characteristics and Oil Consumption in a Small Diesel Engine” SAE Paper 910741 199 1
- Murakami M. et al. “Analysis of Oil Film Behavior between Piston and Cylinder Liner by Using Scanning-LIF” SAE of Japan 25 4 9439186 1994