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The Radiant and Convective Components of Diesel Engine Heat Transfer
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Abstract
The ratio of two temperature gradients across the combustion-chamber wall in a diesel engine is used to provide a heat flow ratio showing the radiant heat transfer as a per cent of local total heat transfer. The temperature gradients were obtained with a thermocouple junction on each side of the combustion-chamber wall. The first temperature gradient was obtained by covering the thermocouple at the cylinder gas-wall interface with a thin sapphire window, while the second was obtained without the window. Results show that the time-average radiant heat transfer is of significant magnitude in a diesel engine, and is probably even more significant in heat transfer during combustion and expansion.
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Ebersole, G., Myers, P., and Uyehara, O., "The Radiant and Convective Components of Diesel Engine Heat Transfer," SAE Technical Paper 630148, 1963, https://doi.org/10.4271/630148.Also In
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