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The Role of Lubricant Additives in Controlling Abnormal Combustion (ORI)
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English
Abstract
This paper reviews the effects of several lubricant related variables on abnormal combustion. The effects of basestocks, sulfated ash level, metal detergent type, and viscosity improver are discussed. The data indicate that improved customer satisfaction can be achieved by design of lubricant type and additive components. Ashless or low sulfated ash oils, and those formulated with hydrocarbon viscosity improvers are shown to contribute less toward ORI and other types of abnormal combustion. In addition, the choice of metal detergent is found to be important. The range of improvement can be as much as 4 octane units. An attempt is made to relate viscosity improver structure to stability and combustion chamber deposit forming tendency. Laboratory, engine, and field test data are presented.
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Citation
Barber, P., Lonstrup, T., and Tunkel, N., "The Role of Lubricant Additives in Controlling Abnormal Combustion (ORI)," SAE Technical Paper 750449, 1975, https://doi.org/10.4271/750449.Also In
References
- Mikita J. J. Bettoney W. E. “Combustion Chamber Deposits and their Effects on Engine Fuel Requirements” Forty-first Annual Meeting of Western Petroleum Refineries Association San Antonio, Texas March 23-25 1953
- DuMont L. F. “Possible Mechanisms by Which Combustion-Chamber Deposits Accumulate and Influence Knock” SAE Summer Meeting French Lick, Indiana June 1951
- Marciente A. Chiampo P. “Influence of Lubricating Oil Ash on the ORI of Engines Running on Unleaded Fuel” Paper 720945 SAE National Fuels and Lubricants Meeting Tulsa, Oklahoma October 1972
- Pless L. G. “Lube-Oil Effects on Surface Ignition-‘A Sleeping Giant’” Paper 77C SAE National Fuels and Lubricants Meeting Tulsa, Oklahoma October 1963
- Sequeira J. S. Destors D. Akoun G. “The Influence of Motor Oil Formulation on Preignition Prevention” Societe des Ingenieurs de 1 Automobile/Association Francaise des Techniciens du Petrole Paris, France April 1970
- Bartleson J. D. Hughes E. C. “Combustion Chamber Deposits as Related to Carbon Forming Properties of Motor Oils” Industrial and Engineering Chemistry 45 7 July 1953 1501 1508
- McNab J. G. Moody L. E. Hakala N. V. “Effect of Lubricant Composition on Combustion-Chamber Deposits” SAE Annual Meeting Detroit January 1954
- Plonsker L. Retzloff J. B. Bartleson J. D. “Use of Ashless Phenolic Antioxidants in Motor Oils” American Chemical Society Symposium on Additives for Lubricants and Fuels Division of Petroleum Chemistry Chicago, Illinois August 1973
- Texaco Petrochemicals 1 1974