This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Measurement of Lubricating Oil Consumption Using Mg Tracer in a Medium-Speed Diesel Engine
Technical Paper
1999-01-3572
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
It has been reported that multigrade oils save fuel and oil. In medium-speed diesel railroad engines, the claimed savings being about 20% oil and 1% fuel.
Oil consumption in such engines has previously been measured in locomotives operating in commercial service, and subject to the errors and logistics problems associated with such procedures. We now report the results of an oil consumption test run in a full-scale engine on a dynamometer in a test cell.
The technique involved estimation of the mass of oil in the engine by the amount of dilution of a pre-measured quantity of magnesium when added to the crankcase. This method accounts for oil in the entire system including the sump, filter housing, and oil galleries. The results indicated at least a 15% oil consumption benefit for an SAE 25W-40 oil versus SAE 40.
The paper presents the technique, the mathematical model used, and a rigorous statistical analysis to support the conclusions.
Recommended Content
Authors
Topic
Citation
Bajpai, S., Logan, M., Stanley, R., and Sundaram, S., "Measurement of Lubricating Oil Consumption Using Mg Tracer in a Medium-Speed Diesel Engine," SAE Technical Paper 1999-01-3572, 1999, https://doi.org/10.4271/1999-01-3572.Also In
References
- Logan, M. R. Shamah, E. S. “Multigrade Railroad Lubricants - Fuel Savings and Field Performance in 2-Stroke and 4-Stroke Engines,” Society of Lubrication Engineers 45 1988 625 633
- Logan, M. R. Stanley, R. M. Hamilton, G.D.S. “Multigrade Engine Oil Consumption Benefits - Results of a Field Test in Railroad Service,” Journal of the Society of Tribologists and Lubrication Engineers 45 1989 639 647
- McGeehan, J. A. “Effects of Piston Deposits, Fuel Sulfur, and Lubricant Viscosity on Diesel Engine Oil Consumption and Cylinder Bore Polishing,” SAE Paper No. 831721 1983
- Logan, M. R. Parker, C. K. Pallesen, L. C. “Improved Fuel Economy Through Lubricant Technology in Medium-Speed Railroad Diesel Engines,” Journal of the American Society of Lubrication Engineers 40 1984 225 233
- Hamilton, G. D. Mullins, D. O. “Reduced Locomotive Fuel Consumption With a Multigrade Engine Oil in Field Service,” Lubrication Engineering 43 1987 252 263
- Thomas, F. J. Ahluwalia, J. S. Shamah, E. S. “Medium-Speed Diesel Engines: Part II - Lubricants, Their Characteristics, and Evaluation,” Transactions of the American Society of Mechanical Engineers 106 1984 879 894
- Fuels and Lubricants Committee, Locomotive Manufacturers Association “Field Experience With Multigrade Railroad Locomotive Oils,” Proceedings of the 52 nd Annual Meeting of the Locomotive Officers Association 1990 55 74