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Engine Studies of Solid Film Lubricant Coated Pistons
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English
Abstract
An investigation describing engine friction reduction benefits attainable via the introduction of Solid Film Lubricants to piston skirts is presented. Ford II-25 thermoset and II-25 waterborne molybdenum disulfide based solid film lubricants were shown through single cylinder motored engine experiments, to produce piston system friction reductions of 12 to 17% at 1500 rpm. Further tests undertaken in fired engine dynamometer studies, on a 1.91 1-4 CVH engine, demonstrated total engine friction reductions of 6% at W.O.T. conditions. The reduced engine friction resulted in lowering BSFC at 850 rpm by 3 to 4%. Tests conducted by Powertrain Operations confirmed durability. II-25 thermoset was selected for production implementation on all new Ford engines starting from model year 1995.
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Rao, V., Kabat, D., Yeager, D., and Lizotte, B., "Engine Studies of Solid Film Lubricant Coated Pistons," SAE Technical Paper 970009, 1997, https://doi.org/10.4271/970009.Also In
References
- Rosenberg, R.C. “General Friction Considerations for Engine Design” SAE paper 821576
- Lin, S.S. Patterson, D.J. “Piston - Ring Assembly Friction Modeling by Similarity Analysis” SAE paper 930794
- Patterson, D.J. Lin, S. S. Ford funded research at U. of M. 1990-1991
- Goenka, P.K. Meernik, P.R. “Lubrication Analysis of Piston Skirts” SAE paper 920490
- Rao, V.D.N. Kabat, D.M. Yeager, D.A. “Low Friction Reciprocating Piston Assembly”
- Rao, V.D.N. Kabat, D.M. Rose, R.A. “Metal Encapsulated Solid Lubricant Coating System”
- Rao, V.D.N. Telang, Y.P. “Process for Coating the Rubbing Surfaces Of the Seal of the Gas Turbine Regenerator”
- Heywood, J.B. Internal Combustion Engine Fundamentals McGraw Hill N.Y. 1988
- Kabat, D.M. Rao, V.D.N. “Single Cylinder Friction Measurement Engine and Initial Test Results” Ford Research Laboratory Technical Report no. 92-16
- Amann, C.A. “Engineering the Spark Ignition Engine-- The Piston Rings- Cylinder Wall Interface” SAE paper 885056
- Sibley, L..B. Wear Control Handbook ASME N.Y. 1980
- Kovach, J.T. Tsakiris Wong, L.T. “Engine Friction Reduction for Improved Fuel Economy” SAE paper no. 820085
- Bishop, I.N. “Effect of Design Variables on Friction and Economy” SAE paper 64812A