This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
The Importance of Friction Modifiers in the Formulation of Fuel Efficient Engine Oils
Annotation ability available
Sector:
Language:
English
Abstract
Fuel economy benefits derived from improved engine crankcase lubricants have been well documented in the last 10 years. These benefits can be gained not only by a reduction in oil viscosity but also by addition of special friction modifier additives. These have been shown to operate by reducing the friction within the boundary regimes of the engine.
Work has been carried out which indicates that a secondary but possibly more significant contribution can be made by friction modifiers where the hydrodynamic regime is extended to lower viscosities. As a result it may be possible to formulate finished lubricants with lowered viscosities while remaining free from wear debits. Such optimised lubricants will result in furtner fuel economy improvements.
Recommended Content
Authors
Citation
Griffiths, D. and Smith, D., "The Importance of Friction Modifiers in the Formulation of Fuel Efficient Engine Oils," SAE Technical Paper 852112, 1985, https://doi.org/10.4271/852112.Also In
References
- Screening Tests Used for Developing Fuel Efficient Engine Oils Chamberlin and Saunders The Lubrizol Corporation: ASLE 34th Annual Meeting 1979
- Determining Friction Characteristics of Engine Oils by Engine Friction and Viscosity Measurements Dancy J.H. Marshall H.T. Oliver C.R. SAE 800365
- Fuel Economy Lubricants in Heavy Duty Road Service Younghouse E.C. Waddey W.E. Schmidt R.P. SAE 801349
- The Effect of Molybdenum Containing Oil Soluble Friction Modifiers on Engine Fuel Economy and Gear Oil Efficiency Greene A.B. Risdar T.J. SAE 811187
- Oil Soluble Friction Reducers - Theory and Application Papay A.G. J. of the Amer. Soc. of Lub. Eng. 38 7 419 1982
- The Influence of Motor Oil Viscosity and Friction Modification on Automotive Fuel Economy, C6/82 I. Mech. E. 1982 Roberts D.C. Gaskill G.P. Richard G.P.
- Fuel Economy Improvements with Friction Modified Engine Oils in Environmental Protection Agency & Road Tests Haviland M.L. Goodwin M.C. General Motors
- Bench Engine Testing of Low Viscosity Engine Oils Pommer W. Klamann D. Symposium on Fuel Efficient Lubricants Esslingen June 1984
- The Relationship Between Oil Viscosity and Engine Performance - A Literature Search Stewart R.M. Selby T.W. SAE Paper 770372
- European Valve Train Wear - Some Experience with the Volvo B20 Test Slater B.B. SAE Paper 750866
- European Oils for Spark Ignition Engines Roux F. SAE Paper 750863
- Viscosity Effects on Engine Wear Under High-Temperature. High-Speed Conditions McMillan M.L. Rosenberg R.C. Murphy C.K. SAE Paper 7809512
- The Relationship of Journal Bearing Wear to Multigrade Engine Oil Viscometric Properties Stambaugh R.L. Kopko R.J. Bennett P.A. SAE Paper 770627
- Some Relationships Between the Viscometric Properites of Motor Oils and Performance in European Engines Bell J.C. Voisey M.A. SAE Paper 770378
- Engine Oil and Bearing Wear Longstrup T.F. Smith, M.F. Jr. SAE Paper 810330
- The Effects of Engine Oil Viscosity and Composition on Fuel Efficiency Clevenger J.E. Carlson D.C. Kleiser W.M. SAE Paper 841369