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Effect of Engine Operating Parameters on Engine Combustion Chamber Deposits
ISSN: 0148-7191, e-ISSN: 2688-3627
Published October 01, 1990 by SAE International in United States
Annotation ability available
A single-cylinder engine was used to study the effect of engine operating parameters on the early stage of deposit formation (first 8 hours). Deposit samples were collected from the engine cylinder using removable sampling probes.
Among the engine operating parameters studied, coolant temperature had the greatest influence on deposit formation. Equivalence ratio of the air-fuel mixture was also important. Other variables such as compression ratio and intake air temperature had minimal effects.
Investigations using a temperature controlled probe revealed that surface temperature is a dominant factor in the deposit forming process. Within a temperature range from 98°C to 256°C, there is an inverse relationship between the amount of deposit accumulated and the surface temperature. Extrapolating the experimental data showed that the critical surface temperature for deposit formation is near 310°C, above which no deposit is expected to form.
CitationCheng, S. and Kim, C., "Effect of Engine Operating Parameters on Engine Combustion Chamber Deposits," SAE Technical Paper 902108, 1990, https://doi.org/10.4271/902108.
- Orelup J. W. and Lee O. I., “Factors Influencing Carbon Formation in Automobile Engines”, Industrial and Engineering Chemistry, 17, p731, 1925.
- Brooks D. B., “Tests of Carbon Deposition in Internal Combustion Engines”, SAE Transaction, p21, 1926.
- Mikita J. J. and Bettoney W. E., “Combustion Chamber Deposits and Their Effects on Engine Fuel Requirement”, Oil Gas J., 52, p84, July 1953.
- Melby A. O., Diggs D. R., and Sturgis B. M., “An Investigation of Preignition in Engines”, SAE Journal, p42, Jan. 1954.
- Warren J., “Combustion Chamber Deposits and Octane-Number Requirement”, SAE Transaction, Vol. 62, p582, 1954.
- Gibson H. J., Hall C. A., and Hirschler D. A., “Combustion-Chamber Deposition and Knock”, SAE Transaction, Vol. 61, p361, 1953.
- Gibson H. J., Hall C. A., and Huffman A. E., “Combustion-Chamber Deposition and Power Loss”, SAE Transaction, Vol. 6, p594, 1952.
- Cleveland A. E. and Enoch O., “Combustion-Chamber Deposits and Power Loss”, SAE Journal, p56, Dec. 1952.
- LoRusso J. A., Kaiser E. W., and Lavoie G. A., “In-Cylinder Sampling Valve Measurements of Hydrocarbons in a Spark Ignited Engine”, Combustion Institute Meeting, Eastern States, Atlanta, Nov. 1979.
- Ebert L. B., “Chemistry of Engine Combustion Deposits: Literature Review”, Chemistry of Engine Combustion Deposits, Plenum, New York, 1985.
- Covitch M. J., Gundic D. T., and Graf R. T., “Microstructure of Carbonaceous Diesel Engine piston Deposits”, Lubrication Engineering, p128, Feb. 1988.
- McNab J. G., Moody L. E., and Hakala N. V., “Effect of Lubricant Composition on Combustion-Chamber Deposits”, SAE Transaction, Vol. 62, p228, 1954.
- Dimitroff R. D., Moffitt J. V., and Quillion R. D., “Aromatic Compounds in Fuels Identified as Main Precursors of Engine Varnish”, SAE Journal, p52, July 1969.
- Shore L. B. and Ockert K. F., “Combustion-Chamber Deposits - A Radiotracer Study”, SAE Transaction, Vol. 66, p285, 1958.
- Corning Glass Co., Data Bulletin MDS-2.
- Incropera F. P. and DeWitt D. P., “Fundamentals of Heat Transfer”, John Wiley & Son, 1981.
- Mikita J. J. and Sturgis B. M., “The Chemistry of Combustion Chamber Deposits”, Proceedings of the 4th World Petroleum Congress, Sect vi/F, p357, 1956.
- Myers P. S., Uyehara O. A., and DeYoung R., “Investigation of Exhaust Emissions Characteristics and Deposits Forming Tendencies of low H/C Fuels in Spark Ignition Engines”, Automotive Technology Development Contractor's Coordination Meeting, Dearborn, Michigan, Oct 1981.
- Spindt R. S. and Wolfe C. L., “The Where and Why of Engine Deposits”, SAE Paper no 636, 1951.
- Lauer J. L. and Friel P. J., “Some Properties of Carbonaceous Deposits Accumulated in Internal Combustion Engines”, Combustion and Flame, Vol. 4, p107, July 1960.