Engine Studies of Solid Film Lubricant Coated Pistons

Paper #:
  • 970009

Published:
  • 1997-02-24
Citation:
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.
Pages:
16
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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