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L-Ring Effect on Air-Cooled Two-Stroke Gasoline Engines
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English
Abstract
An L-ring (a piston ring with an L-shaped cross section) has been used on some air-cooled two-stroke gasoline engines. Good performance has been obtained; the reason is unknown. The maximum power of these small engines (used mainly for small cars, motorcycles, outboard motors, snowmobiles, etc.) is limited by its thermal load endurance. So piston and cylinder become the most important factors to the engine's performance. L-ring effects are examined in the light of these temperature measurements.
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Citation
Furuhama, S. and Ichikawa, H., "L-Ring Effect on Air-Cooled Two-Stroke Gasoline Engines," SAE Technical Paper 730188, 1973, https://doi.org/10.4271/730188.Also In
References
- Dykes P. De K. “Piston Ring Movement during Blow-by in High-Speed Petrol Engines.” Trans. Inst. Mech. Engrs. 2 1947-1948 71
- Furuhama S. Tsuruta M. “A Dynamic Theory of Piston-Ring Lubrication (4th Report, Load).” Transactions of the JSME 27 178 1962 919 926
- Furuhama S. Hiruma M. “Axial Movement of Piston Rings in the Groove.” 27th ASLE Annual Meeting Houston May 1-4 1972
- Furuhama S. “The Temperature of a Crankpin Bearing of an Automobile Engine.” ASLE Transactions 10 1967 203 213
- Furuhama S. Tada T. Nakumura T. “Some Measurements of the Piston Temperatures in a Small Type Gasoline Engine.” Bulletin of JSME 7 26 1964 422 429