期刊名称：Journal of Theoretical and Applied Information Technology
印刷版ISSN：1992-8645
电子版ISSN：1817-3195
出版年度：2013
卷号：48
期号：2
页码：904-910
出版社：Journal of Theoretical and Applied
摘要：This paper introduces the principle of thermal analysis for the combustion engine piston, gets the heat exchange coefficient of the piston top and the heat exchange coefficient distribution of the piston and the cooling water through calculation, calculates the temperature field of the piston with the finite element method and modifies the calculation model by repeatedly comparing the result with the measured temperature. It is found out that the temperatures of the piston top and the first circular groove are relatively high after calculating the temperature field and based on the results the optimization scheme of adding the cooling oil chamber is applied to the piston structure. Results show that, after optimization, the maximum temperature of the piston top is decreased to 264, and the temperature at the first ring is decreased to 204℃, thus improving the working condition of the piston ring.
