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Ball-on-Cylinder Testing for Aviation Fuel Lubricity
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English
Abstract
Of the many research approaches investigated over the years to measure the lubrication properties of aviation turbine fuels, the Ball-on-Cylinder Lubricity Evaluator (BOCLE) has emerged as the most significant test. BOCLE was originally a lubricant research device modified for low viscosity jet fuel when the Air Force encountered fuel control problems in 1965 with JP-4. It proved to be capable of detecting the presence of additives such as corrosion inhibitors which improve boundary lubrication properties and also the absence of natural lubricity agents in highly refined jet fuel. The Coordinating Research Council carried out several programs to investigate test variables such as cylinder type, humidity control and load. A semi-automated version using Falex test rings has now been commercialized and is being used to test fuels from aircraft experiencing abnormal pump wear and fuel control hang-up.
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Authors
Citation
Dukek, W., "Ball-on-Cylinder Testing for Aviation Fuel Lubricity," SAE Technical Paper 881537, 1988, https://doi.org/10.4271/881537.Also In
References
- Appeldoorn, J. K. Dukek, W. G. “Lubricity of Jet Fuels” SAE 660712 October 3-7 1966
- Vere, R. A. “Lubricity of Aviation Turbine Fuels” SAE 690667 October 6-10 1969
- Tao, F. F. Appeldoorn, J. K. “The Ball-on-Cylinder Test for Evaluating Jet Fuel Lubricity” ASLE Cleveland, OH May 6-9 1968
- Tyler, J. C. Cuellar, J. P. “Fuel Lubricity-Survey of the Literature” AFLRL No. 136/MED 121 January 1981
- Cuellar, J. P. et al. “Aviation Fuel Lubricity Studies” SWRI Report to CRC Fuel Lubricity Group April 1986
- “Aviation Fuel Lubricity Evaluation” March 1988
- Jones, J. B. Pocock, G. “Magnetic Orientation of Four-Ball Test Specimens and Effect on Total Test Time” Nature 274 Aug. 1978