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Understanding the mechanism of Cylinder Bore and Ring Wear in Methanol Fueled SI Engines
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English
Abstract
One of the major problems created by the use of methanol fuels in SI engines is the high cylinder bore and ring wear rates observed during operation at low engine temperatures. The objective of the work reported in this paper was to identify the processes controlling the corrosion/wear mechanism in methanol-fueled, spark-ignition engines.
Basically, three different types of experiments were performed during this project. The experiments consisted of:
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1.
Combustion experiments designed to identify the combustion products of methanol at various locations within a confined methanol flame;
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2.
Exposure studies designed to define the specific role of each of the combustion products on the corrosion mechanism;
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3.
Lubricant screening experiments designed to identify the mode of penetration of the oil film, and the location, in the microscale, of the surface attack.
Performic acid was identified as the corrosive agent. It appears that corrosion prevention is best accomplished through additive formulation designed to prevent the accumulation on the metal surfaces of the precursors to performic acid formation and to provide excellent dynamic antiwear characteristics.
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Authors
Topic
Citation
Ryan, T., Bond, T., and Schieman, R., "Understanding the mechanism of Cylinder Bore and Ring Wear in Methanol Fueled SI Engines," SAE Technical Paper 861591, 1986, https://doi.org/10.4271/861591.Also In
References
- Owens E.C. “Methanol-Fuel Effects on Spark Ignition Lubrication and Wear,” International Symposium on Alcohol Fuel-Technology-Methanol and Ethanol Wolfsburg, Germany November 1977
- Marbach H.W., Jr. Owens E.C. Ryan T.W. III Frame E.A. Naegeli D.W. “Evaluation of the Effects of Alcohol Fuels on Spark Ignition Engine Wear,” U.S. Army Fuels and Lubricants Research Laboratory Final Report AFLRL No. 150, Government Accession No. AD A110021 December 1981
- Ryan T.W. III Naegeli D. W. Owens E. C. Marbach H.W. Barbee J.G. “The Mechanisms Leading to Increased Cylinder Bore and Ring Wear in Methanol-Fueled S.I. Engines,” SAE Paper 811200 October 1981
- Owens E.C. Marbach H.W. JR. Frame E.A. Ryan T.W. III “Effects of Alcohol Fuels on Engine Wear,” SAE Paper 800857 June 1980
- Nautiyal P.C. Goetz W.A. Battista V.C. “A Comparison of Methanol and Gasoline Engine Cold Starting Wear Performance,” Centre for Alternate Fuel Utilisation Mississauga, Ontario, Canada, L5K1B3
- Baisley W.H. Edwards C.F. “Wear Characteristics of Fleet Vehicles Operating on Methyl Alcohol,” SAE Paper 811202 October 1981
- Chui G.K. King E.T. Pedrys F. “Evaluation of Lubricants for Methanol-Fueled Engines,” Paper C3-1 Proc. 5th ISAFT Auckland, New Zealand 1982
- Marbach H.W. Jr. Frame E.A. Owens E.C. Naegeli D.W. “The Effects of Alcohol Fuels and Fully Formulated Lubricants on Engine Wear,” SAE Paper 811199 October 1981