This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
The Mechanisms Leading to Increased Cylinder Bore and Ring Wear in Methanol-Fueled S. I. Engines
Annotation ability available
Sector:
Language:
English
Abstract
It is now a fairly well established fact that excessive ring and cylinder bore wear can result from the operation of an S. I. engine on neat methanol. The mechanism leading to the excessive wear were investigated using both engine and bench tests.
Engine tests using prevaporized superheated methanol indicated that the wear results from reactions between the combustion products and the cast iron cylinder liner, where the presence of liquid methanol in the combustion chamber appears to be an important part of the mechanism. These reactions were investigated using a spinning disc combustor.
The spinning disc combustor was used to provide a source of burning methanol droplets which were subsequently quenched on a water-cooled cast iron surface. The condensate formed on the cast iron surface was collected and analyzed for chemical composition. Infrared analysis indicated the presence of large quantities of iron formate, a reaction product of iron and formic acid. Additional spinning disc tests were performed to investigate the effects of surface material on the formation of formic acid.
Recommended Content
Authors
- Thomas W. Ryan - U.S. Army Fuels and Lubricants Research Laboratory, Southwest Research Institute, San Antonio, TX
- D. W. Naegeli - U.S. Army Fuels and Lubricants Research Laboratory, Southwest Research Institute, San Antonio, TX
- E. C. Owens - U.S. Army Fuels and Lubricants Research Laboratory, Southwest Research Institute, San Antonio, TX
- H. W. Marbach - U.S. Army Fuels and Lubricants Research Laboratory, Southwest Research Institute, San Antonio, TX
- J. G. Barbee - U.S. Army Fuels and Lubricants Research Laboratory, Southwest Research Institute, San Antonio, TX
Topic
Citation
Ryan, T., Naegeli, D., Owens, E., Marbach, H. et al., "The Mechanisms Leading to Increased Cylinder Bore and Ring Wear in Methanol-Fueled S. I. Engines," SAE Technical Paper 811200, 1981, https://doi.org/10.4271/811200.Also In
References
- Hagen, D. L. “Methanol as a Fuel: A Review with Bibliography.” SAE Paper 770792 1977
- Ebersole, G. D. Manning, F. S. “Engine Performance and Exhaust Emissions: Methanol versus Isooctane.” SAE Paper 720692 1971
- Fleming, R. D. Chamberlain, T. W. “Methanol as Automotive Fuel Part I -Straight Methanol.” SAE Paper 750121 1975
- Brinkman, N. D. “Effect of Compression Ratio on Exhaust Emissions and Performance of a Methanol-Fueled Single-Cylinder Engine.” SAE Paper 770791 1977
- Ingamells, J. C. Lindquist, R. H. “Methanol as a Motor Fuel or a Gasoline Blending Component.” SAE Paper 750123 1975
- Owens, E. C. “Methanol-Fuel Effects on Spark Ignition Lubrication and Wear.” International Symposium on Alcohol Fuel-Technology-Methanol and Ethanol Wolfsburg, Germany 1977
- Owens, E. C. Marbach, H. W. Frame, E. A. Ryan, III, T. W. “Effects of Alcohol Fuels on Engine Wear.” SAE Paper 800857 1980
- Quillian, R. D., et al “Cleaner Crankcases with Blowby Diversion,” SAE Paper 801B 1964
- Mars, P. Scholten, J. J. F. Zqietering, P. “The Catalytic Decomposition of Formic Acid.” Advances in Catalysis 14 35 1963
- Blake, P. G. Hinshelwood, C. “The Homogeneous Decomposition Reactions of Gaseous Formic Acid.” Proc. Ray. Soc. A255 444 1960
- Aronowitz, D. Naegeli, D. W. Glassman, I. “Kinetics of the Pyrolysis of Methanol.” J. Phy. Chem. 81 2555 1977
- Aronowitz, D. Santoro, R. J. Dryer, F. L. Glassman, I. “Kinetics of the Oxidation of Methanol: Experimental Results-Semi-Global Modeling and Mechanistic Concepts.” The 17th Symposium (International) on Combustion Leads, England 1978