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Graphicoanalytical method for calculation of heat transfer through the piston of an internal combustion engine

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Abstract

Using a quantitative estimate of deposit formation on the pistons of a diesel engine and results of engine thermometry, a graphicoanalytical method is developed for calculation of heat transfer through an oil-cooled piston.

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Abbreviations

Tm :

mean resultant gas temperature in engine cylinder

th :

temperature of heated side of piston

tc :

temperature of cooled piston surface

to :

temperature of cooling oil

q:

specific thermal flux through piston

Pe :

mean effective engine pressure

Cm :

mean piston speed

Ti :

injected air temperature, °K

Pi :

injected air pressure

ge :

effective fuel flow rate

δ:

mean thickness of piston bottom

λ:

thermal-conductivity coefficient of piston bottom

Z:

number of strokes in engine cycle

αw :

gas-to-wall heat-transfer coefficient

αo :

wall-to-oil heat-transfer coefficient

R:

total thermal resistance

Literature cited

  1. V. M. Buznik, Heat Transfer in Marine Energy Devices [in Russian], Sudostroenie, Leningrad (1967).

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  2. G. B. Rozenblit, Heat Transfer in Diesel Engines [in Russian], Mashinostroenie, Moscow (1977).

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  3. A. V. Kostrov, “Calculation of heat transfer in foreign internal combustion engines,” in: Internal Combustion Engines [in Russian], No. 4-67-5, NIIINFORMTYaZhMASh, Moscow (1967).

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  4. N. I. Molodtsov, P. V. Sokolov, and Ya. Ya. Vlasov, “Study of heat transfer in diesels,” Tr. Tsentr. Nauchno-Issled. Dizel'. Inst., No. 68 (1975).

  5. B. S. Stefanovskii, Thermal Loading of High-Speed Piston Engine Components [in Russian], Mashinostroenie, Moscow (1978).

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  6. S. I. Sevast'yanov, The Effect of Fuels and Lubricating Oils on Reliability and Durability of Railway Diesel Engines [in Russian], Transport, Moscow (1971).

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  7. S. I. Sevast'yanov, “Study of high-temperature deposits on diesel engine pistons,” Khim. Tekhnol. Topliv Masel, No. 11 (1973).

  8. S. I. Sevast'yanov, “Increasing the reliability of new locomotives,” Zheleznodorzh. Transport, No. 4 (1979).

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Authors
  1. S. I. Sevast'yanov
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Additional information

Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 37, No. 5, pp. 918–925, November, 1979.

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Sevast'yanov, S.I. Graphicoanalytical method for calculation of heat transfer through the piston of an internal combustion engine. Journal of Engineering Physics 37, 1371–1376 (1979). https://doi.org/10.1007/BF01102239

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  • DOI: https://doi.org/10.1007/BF01102239

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