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A Study of Temperature Distribution in a Diesel Piston - Comparison of Analytical and Experimental Results
ISSN: 0148-7191, e-ISSN: 2688-3627
Published September 01, 1986 by SAE International in United States
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The purpose of this paper is to investigate the piston temperature and temperature distribution with varying engine torques and speeds for a farm diesel engine. This analysis is based on the concept that the piston thermal system is considered to be one part of the whole engine energy system. That is, by thermodynamics cycle simulation, the heat transfer rate from gas to metals. was first calculated, and then the temperature distribution in the piston was obtained by an axi-symmetrical finite element heat conduction model. In order to verify the predicted values, input data for the cycle simulation were obtained, at the same time the piston temperature were measured. Some of the governing thermal boundary conditions of the piston were arrived at through a literature research.
The calculated results indicate that heat transfer rate increases with engine speed. Also an increase in engine torque increases the heat release, hence also increases the time-averaged piston temperature. The maximum temperature reached in the piston occurred at the maximum power operating condition. A comparison of computed and experimental results showed that the numerical model adequately predicts the thermal effects on the piston under various engine operation conditions.
|Technical Paper||DETERMINATION OF LOCAL HEAT TRANSFER COEFFICIENTS AT THE PISTON OF A HIGH SPEED DIESEL ENGINE BY EVALUATION OF MEASURED TEMPERATURE DISTRIBUTION|
|Technical Paper||Examination of Key Issues in Low Heat Rejection Engines|
CitationWu, H. and Chiu, C., "A Study of Temperature Distribution in a Diesel Piston - Comparison of Analytical and Experimental Results," SAE Technical Paper 861278, 1986, https://doi.org/10.4271/861278.
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