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应用热力学第二定律，列出了涡流室式柴油机的火用平衡方程根据系统的热力学火用和适合柴油机的热力学死点，以Ｓ１９５柴油机为例，进行火用分析，显示了火用分析的意义，确定了柴油机中各种火用损失的大小结果表明：燃烧过程火用损失，尤其是涡流室中的燃烧过程火用损失是最主要的火用损失根据火用平衡方程定义了柴油机的火用效率和瞬态火用效率，从而有利于判断柴油机不同负荷下工作过程的不可逆程度
According to the second law of thermodynamics, the exergy equilibrium equation of a vortex chamber diesel engine is listed. According to the thermodynamic exergy of the system and the thermodynamic dead center suitable for a diesel engine, the S195 diesel engine is taken as an example and the exergy analysis shows that The results show that the loss of the exergy in the combustion process, especially the exergy loss of the combustion process in the vortex chamber, is the most important exergy loss. According to the exergy equilibrium equation, the definition of the diesel engine The exergy efficiency and transient exergy efficiency, which will help determine the degree of irreversibility of diesel engine working under different loads