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Review of Organic Friction Modifiers - Contribution to Fuel Efficiency?
Technical Paper
2000-01-1792
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Friction modifiers have been around for many years. Originally, the application was for limited slip gear oils, automatic transmission fluids and multipurpose tractor fluids.
Since fuel economy became an international issue, initially to reduce crude oil consumption, friction modifiers have been introduced into automotive crankcase lubricants as well. The current emphasis is to improve the fuel efficiency through the engine lubricant and to reduce emissions to the environment.
This paper describes the chemistry of the various organic friction modifiers as well as the non-organic types. A basic understanding is given on the mechanisms how and why these products work as friction modifiers and what is known about structure - activity relationships.
Definitions are given about the various lubrication regimes as well as figures to what extend these regimes are present in current engine tests measuring fuel economy. In addition, it is described which type of friction modifiers is most active in the various lubrication regimes.
Factors influencing the friction reducing properties, like base fluid characteristics and competing additives, are covered and appropriate tests to measure frictional properties are described. Finally, some recent work regarding the effect of some friction modifiers on frictional levels, determined with a pin-on-ring tribometer, is shown.
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Kenbeek, D., Buenemann, T., and Rieffe, H., "Review of Organic Friction Modifiers - Contribution to Fuel Efficiency?," SAE Technical Paper 2000-01-1792, 2000, https://doi.org/10.4271/2000-01-1792.Also In
References
- An Investigation into the Effect of Zinc Dithiophosphate on ASTM Sequence VIA Fuel Economy Wilk M.A. Abraham W.D. Dohner B.R. SAE paper 961914
- Friction Analysis of Modern Gasoline Engines and New Test Methods to Determine Lubricant Effects Houben M. 10th International Colloquium Esslingen 1996
- Fuel Efficiency of Engine Oils - Current Issues Korcek S. 53rd Annual STLE Meeting Detroit 1998
- Oil-Soluble Friction Reducers - Theory and Application Papay A. G. ASLE Annual Meeting May 1982 ASLE
- Miscellaneous additives Crawford J. Psaila A. Chemistry & Technology of Lubricants Mortier R.M. Orszulik S.T. London 1992 160 165
- Friction modifiers and their testing Christadudakis D. Additives for Lubricants 1994 134 162
- Retention of Fuel efficiency of Engine Oils Korcek S. Johnson M.D. Jensen R.K. Collum C. Mc. 11th International Colloquium Esslingen 1998
- Friction Reduction in Lubricated Components through Engine Oil Formulation Sorab J. Korcek S. Bovington C. SAE paper 982640
- Engine Friction Lubricant Sensitivities: A Comparison of Modern diesel and Gasoline Engines Taylor R.I. 11th International Colloquium Esslingen 1998
- Effects of ageing on fuel efficient engine oils February 1996
- Fuel efficiency Screening Tests for Automotive Engine oils Moore A.J. SAE paper 932689
- Prediction of the Influence of Lubricant Formulations on Fuel economy, from Laboratory Bench Tests Bovington C. Spikes H. Proceedings of the International Tribology Conference Yokahama 1995