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Some Studies on Two-Ring-Pistons in Automobile Turbocharged Gasoline Engine
ISSN: 0148-7191, e-ISSN: 2688-3627
Published February 01, 1984 by SAE International in United States
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To reduce the friction loss, the size of compression height and the weight of piston in the automobile gasoline engines, two-ring-pistons instead of usually used three-ring-pistons have been developed at many manufacturers. In many designs of piston ring arrengement, up to now, the second ring has been used for oil control not for gas sealing. And the second ring loses the sealing effect at a high speed by the ring movement in the groove. Therefore, it is expected that the trouble caused by an increase of blow-by is not large. However, an increase in thermal load caused by a decrease of the piston cooling passage and also an increase of the lubricating oil consumption are considered to be crucial problems, especially in case of high output engines. With respect to these problems, some improvement are indicated on the basis of the experiments.
CitationFuruhama, S., Kojima, M., Enomoto, Y., and Yamaguchi, Y., "Some Studies on Two-Ring-Pistons in Automobile Turbocharged Gasoline Engine," SAE Technical Paper 840183, 1984, https://doi.org/10.4271/840183.
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- Furuhama S. Sasaki S. New Device for Measurement of Piston Frictional Forces in Small Engines SAE-Paper 831284
- Furuhama S. Suzuki H Temperature Distribution of Piston Rings and Piston in High Speed Diesel Engine Bulletion of the JSME 22-174 Dec. 1979 1788
- Furuhama S. Hiruma M. Tsuzita M. Piston Ring Motion and Its Influence on Engine Tribology SAE-Paper 790860
- Furuhama S. Ichikawa H. L-Ring Effect on Air-Cooled Two-stroke Gasoline Engines SAE-Paper 730188