1967-02-01

Heat Rejection and Cooling Requirements of Internal Combustion Engines 670524

This paper develops methods of calculating the heat rejection of internal combustion engines so that these quantities can be used in selecting radiators and oil coolers. The importance of heat which is rejected, though often not recognized, is that it is the source of most engine trouble and also is the basic determinant for the rating of an engine. Part of the heat which is rejected is carried away in the exhaust gases, the remainder passes through the metallic walls of the engine, causing expansion and internal stress in the parts.
Also discussed are input-output relationships in the engine as well as calculations for heat loss and engine cooling phenomena. The methods developed give some insight into the thermodynamic efficiency of the internal combustion engine.

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