This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Evaluation of Dispersancy by Analytical Methods
Annotation ability available
Sector:
Language:
English
Abstract
Test severity, inhibition and oil discrepancy: these are factors which influence the formation of sludge and the extent of its settling in the engine.
By appropriate used-oil analyses it is possible to calculate indices of the oil's performance which are largely independent of the type of engine used and the test procedure followed. The ASTM D 893 test procedure is inapplicable to a large number of modern motor oils.
An alternative method based on the filtration of used oils over membrane filters has been of great help in recent years. However, a newly developed photometric method seems promising in overcoming most present analytical difficulties.
The indices obtained from used-oil analyses can become the only feasible test method in the development of long drain oils.
Authors
Topic
Citation
Badiali, F., Berti, F., Ingoni, A., and Pusateri, G., "Evaluation of Dispersancy by Analytical Methods," SAE Technical Paper 780932, 1978, https://doi.org/10.4271/780932.Also In
References
- Bouman C.A. “Properties of Lubricating Oil and Engine Deposits.” London MacMillan and Co. Limited 1950
- Labre J. Octobre 1956
- Rogers D.T. et al. “Mechanism of Engine Sludge Formation and Additive Action.” SAE Trans. 1956 982
- Rouze S.R. Forster F.A. “A Service Evaluation of Detergent Lubricating Oils Utilizing Electron Microscopy.” Lubrication Engineering May 1960
- Asseff P.O. “Used Engine Oil Analyses.” Review SAE 770642 1977