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The Effect of Oil Ring Geometry on Oil Film Thickness in the Circumferential Direction of the Cylinder
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English
Abstract
This paper describes measurements of oil film thickness of piston ring packages which have different oil control rings. The oil film thickness measurements were taken at three points, namely, the piston thrust side, front side and rear side, by the Laser Induced Fluorescence Method(LIF). One of the main findings is that the oil film thickness on the thrust side varies greatly from cycle to cycle, while cyclic variations are smaller on the front and rear sides. This difference is due to the smaller inclination of the oil control rings on the front and rear sides, compared with that on the thrust side. It is also found that oil consumption has a good correlation with oil film thickness on the thrust side and that the thrust side oil film thickness becomes thinner as the oil ring becomes narrower.
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Citation
Nakayama, K., Seki, T., Takiguchi, M., Someya, T. et al., "The Effect of Oil Ring Geometry on Oil Film Thickness in the Circumferential Direction of the Cylinder," SAE Technical Paper 982578, 1998, https://doi.org/10.4271/982578.Also In
References
- Takiguchi M. et al “Variation of Piston Ring Oil Film Thickness in an Internal Combustion Engine -Comparison Between Thrust and Anti-Thrust Sides-” SAE Paper 980563 1998
- Furuhama S. “A Dinamic Theory of Piston-Ring Lubrication(1st. Report, Calculation)” Bulletin of JSME 2 7 1959 423