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Wear of Piston Rings and Liners by Laboratory Simulation
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English
Abstract
A new bench tester for laboratory simulation of piston ring and cylinder wear has been developed. Tests are made using liner segments which bear against a reciprocating piston ring. Temperatures up to 550°C, and loads and speeds representative of the most severe top ring conditions may be imposed. A precision oil spray system delivers the desired quantity and quality of oil to the wear interface. The computer controlled simulator duplicates the desired test cycle, and displays and stores data on friction forces and friction coefficients as the test proceeds.
In this paper results are presented from the simulator for production and prototype ring and liner combinations, including ceramic coatings for potential use in advanced diesel engines. The importance of the method of oil delivery on test repeatability is emphasized. Some comparisons with Cameron Plint bench tests and firing engine results are presented. Good correlations were found with respect to the relative ranking of material pairs.
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Slone, R., Patterson, D., Morrison, K., and Schwartz, G., "Wear of Piston Rings and Liners by Laboratory Simulation," SAE Technical Paper 890146, 1989, https://doi.org/10.4271/890146.Also In
References
- Slone R. J. et. al. “Upper Cylinder Wear Simulation in Heavy Duty Diesel Engines,” Proc. of the 1987 Coatings for Advanced Heat Engines Workshop, US Dept. of Energy Conference 870762 Castine Maine July 27-30 1987
- Patterson D. J. et. al. “Piston and Ring Friction Studies in Cummins 903 Engine “Third Progress Report To U S TACOM,” University of Michigan January 1988
- Naylor M. G. S. “Development of Advanced Diesel Wear Coatings,” Proc. of the 1987 Coatings for Advanced Heat Engines Workshop, US Dept. of Energy Conference 870762 Castine Maine July 27-30 1987