This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Fuel Efficiency Screening Tests for Automotive Engine Oils
Annotation ability available
Sector:
Language:
English
Abstract
Engine crankcase oils influence automotive fuel efficiency through the energy required to overcome viscous shear and boundary friction. Although the importance of high shear viscosity has been recognised for some time by the oil and automotive industries and suitable viscometric techniques developed for its determination, a less concerted approach has been taken to the measurement of boundary friction. This paper describes two techniques for measuring this parameter to satisfactory levels of accuracy. Based on two commonly-used types of equipment, both methods yield data which correlate well with measured fuel savings.
Recommended Content
Authors
Citation
Moore, A., "Fuel Efficiency Screening Tests for Automotive Engine Oils," SAE Technical Paper 932689, 1993, https://doi.org/10.4271/932689.Also In
Tribological Insights and Performance Characteristics of Modern Engine Lubricants
Number: SP-0996; Published: 1993-10-01
Number: SP-0996; Published: 1993-10-01
References
- Martin F.A. “Friction in internal combustion engine bearings” Paper C67/85, Combustion Engines - Reduction of Friction and Wear I. Mech. E. London 1985
- Lang O.R. “Reibungsverluste in Verbrennungsmotoren (Friction losses in combustion engines)” Schmiertechnik & Tribologie 29 January 1982
- Igarashi J. Kagaya M. Satoh T. Nagashima T. “High viscosity index petroleum base stocks - the high potential base stocks for fuel economy automotive lubricants” SAE Paper 920659 International Congress & Exposition Detroit February 1992
- Benchaita M.T. Lockwood F.E. “A reliable friction model of lubricant related friction in internal combustion engines” Paper 11.4, Tribologie 2000 Technische Akadamie Esslingen January 1992
- Morecroft D.W. “The Shell low-velocity friction machine for evaluating fuel economy motor oils” Wear 89 2 215 223 1983
- Dobson G.R. Pike W.C. “Predicting viscosity related performance of engine oils” Erdol und Köhle 36 5 218 224 1983
- Dobson G.R. “The prediction of fuel efficiency of engine oils” CEC Symposium on the Performance of Alternative Fuels and Lubricants 1981
- Battersby J. Hillier J.E. “The prediction of lubricant related fuel economy characteristics of gasoline engines by laboratory bench tests” Esslingen International Colloquium June 1986
- Furey M.J. “Metallic contact between sliding surfaces” Trans. A.S.L.E. 4 1 11 1961
- Papay A.G. “Oil-soluble friction reducers - theory and application” 37th Annual Meeting Cincinnati, Ohio May 1982
- Briscoe B.J. Evans D.C.B. “The shear properties of Langmuir-Blodgett layers” Proc. Roy. Soc. Lond. A 380 389 407 1982
- Eyring H. J. chem. Phys. 4 283 1936
- Hirst. W. Moore A.J. “Non-Newtonian behaviour in elastohydrodynamic lubrication” Proc. Roy. Soc. Lond. A 337 101 121 1974
- Hirst W. Moore A.J. “Elastohydrodynamic lubrication at high pressures II. Non-Newtonian behaviour” Proc. Roy. Soc. Lond. A 365 537 565 1979
- Hirst W. Moore A.J. “The effect of temperature on traction in elastohydrodynamic lubrication” Phil. Trans. Roy. Soc. Lond. A 298 183 208 1980
- Johnson K.L. Tevaarwerk J. “Shear behaviour of elastohydrodynamic oil films” Proc. Roy. Soc. Lond. A 356 215 236 1977
- Dowson D. Ruddy B.L. Economou P.N. “The elastohydrodynamic lubrication of piston rings” Proc. Roy. Soc. Lond. A 386 409 430 1983
- Goenka P.K. Paranipe R.S. Jeng Y-R. “FLARE: an integrated software package for friction and lubrication analysis of automotive engines - Part 1: overview and applications” SAE Paper 920487 1992