This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Influences of Lubricant Properties on ASTM Sequence VI and Sequence VI-A Fuel Efficiency Performance
Annotation ability available
Sector:
Language:
English
Abstract
Influences of high shear viscosity and boundary friction on ASTM Sequence VI and Sequence VI-A fuel efficiency (FE) performances are studied through the use of laboratory screening tests. Statistical analysis of FE and screening test data suggests that optimum screening test conditions are identical for the two engine tests. This being so, a single set of screening test data allows both engine test outcomes to be predicted and the changing influence of the lubricant to be readily perceived.
A further investigation is made of the influence of pressure-viscosity coefficient on Sequence VI-A fuel efficiency performance. Values of this property are determined through measurements of elastohydrodynamic oil film thickness and the results included in a further analysis of engine performance. A small but significant influence on fuel efficiency is detected.
Recommended Content
Authors
Citation
Moore, A., "Influences of Lubricant Properties on ASTM Sequence VI and Sequence VI-A Fuel Efficiency Performance," SAE Technical Paper 961138, 1996, https://doi.org/10.4271/961138.Also In
References
- Moore, A. J. Fuel efficiency screening tests for automotive engine oils SAE Trans. 1993 102 1091 1099
- Benchaita, M. T. Lockwood, F. E. A reliable friction model of lubricant-related friction in internal combustion engines Lubrication Science 1993 5 259 280
- 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 1992
- Moore, A. J. Cooper, D. Robinson, T. M. Rheological properties of engine crankcase and gear oil components in elastohydrodynamic oil films SAE Trans. 1994 103 1352 1364
- Johnson, G. J. Wayte, R. Spikes H. A. The measurement and study of very thin lubricant films in concentrated contacts S.T.L.E. Trans. 1991 34 187 194
- Hamrock B. J. Dowson D. Isothermal elastohydrodynamic lubrication of point contacts Trans. A.S.M.E. 1977 A99 264 276
- Barus, C. Isothermals, isopiestics and isometrics relative to viscosity American Journal of Science 1893 45 87
- Cooper, D. Moore, A. J. Application of the ultra-thin elastohydrodynamic oil film thickness technique to the study of automotive engine oils Wear 1994 175 93 105
- Gunsel, S. Spikes, H. A. Aderin, M. In-situ measurement of ZDDP films in concentrated contacts Tribology 2000, 8th International Colloquium of the Technical Academy of Esslingen 1992
- Chittenden, R. J. Dowson, D. Dunn, J. F. Taylor, C. M. A theoretical analysis of the isothermal elastohydrodynamic lubrication of concentrated contacts I. Direction of lubricant entrainment coincident with the major axis of the Hertzian contact ellipse Proc. Roy. Soc. Lond. A 1985 397 245 269
- Dowson, D. Ruddy, B. L. Economou, P. N. The elastohydrodynamic lubrication of piston rings Proc. Roy. Soc. Lond. A 386 409 430 1983