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Plastic Oil Rings for Diesel Engines: A Preliminary Evaluation
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English
Abstract
The ability of a piston oil ring to conform to liner distortions during engine operation is directly related to its radial stiffness. The ability to conform is also very important for controlling lubricant oil consumption and emissions. This paper describes the procedure utilized to investigate the technical feasibility of using flexible high performance engineering plastics to replace metal as base material for oil rings.
Bench tests and engines were used to select and evaluate different types of plastics for wear resistance and structural integrity. Engine test results indicated no structural failures but wear levels were found to be unacceptably high for use in durable heavy duty diesel engines.
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Citation
Cullen, J., Dixon, R., and Ma, J., "Plastic Oil Rings for Diesel Engines: A Preliminary Evaluation," SAE Technical Paper 960049, 1996, https://doi.org/10.4271/960049.Also In
References
- Andres, T.E. “Polybenzimidazole Based Materials in Automotive Tribological Applications” SAE Technical. Paper 940552 March 1994
- LNP Engineering Plastics Bulletin 254-894 “Intemally Lubricated Reinforced Thermoplastics and Fluoropolymer Composites”
- McGeehan, J.A. “A Survey of the Mechanical Design Factors Affectinc, Engine Oil Consumption” SAE Technical Paper 790864 September 1979
- SAE Piston Ring Standards Manual SAE HS-2200 1993