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气缸盖因其结构复杂,在作三维有限元素法计算时,大多数研究者都对其形状作了较大的简化,这给计算的准确性带来了影响。作者在温度测试的基础上,用西门子计算机对6130柴油机气缸盖的温度场作了三维有限元素法计算研究。使用了ADINAT程序。而计算模型与实际结构极其一致,各部形状,特别是气道的结构形式都不作大的简化。因此计算具有相当规模,整个计算模型包括1127个节点,592个8～21节点的块单元。借助其它辅助程序补充了ADINAT程序的不足,由计算机绘制了模型的有限元素分割图及换热边界图,这是一种有效的数据检查手段。通过分析计算,提出了燃烧室表面划区确定换热系数的模式,为类似型式柴油机气缸盖的计算提供了借鉴,并对9130柴油机气缸盖的热状况做了判定。
Due to the complicated structure of the cylinder head, most of the researchers have simplified the shape of the cylinder head in the calculation of the three-dimensional finite element method, which has affected the accuracy of the calculation. Based on the temperature test, the author calculated the temperature field of cylinder head of 6130 diesel engine with Siemens computer by three-dimensional finite element method. Using ADINAT program. However, the calculation model is extremely consistent with the actual structure, and the shape of each part, especially the structure of the airway, is not greatly simplified. Therefore, the calculation of a considerable scale, the entire calculation model includes 1127 nodes, 592 8-21 nodes block unit. Addition of the ADINAT program by means of other auxiliary programs, the computer has drawn the finite element map of the model and the heat transfer boundary map, which is an effective means of data inspection. Through the analysis and calculation, the model of determining the heat transfer coefficient on the surface of combustion chamber is put forward, which provides a reference for the calculation of diesel engine cylinder head of similar type, and makes a judgment on the thermal condition of 9130 diesel engine cylinder head.