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中文摘要：
应用有限时间热力学理论分析了包含多变过程的内可逆Otto循环，由数值计算给出了考虑传热损失时循环输出功与压缩比、效率与压缩比以及输出功与效率的特性关系，分析了多变指数和传热损失对循环性能的影响，通过分析可知多变指数和传热对Otto循环性能有较大影响。计算所得的结果对实际Otto热机的设计和改进有一定的指导意义。
英文摘要：
By using Finite-time thermodynamic theory, an endoreversible Otto cycle with potytropic process is analyzed. The analytical formula between the work output and the compression ratio, between the thermal effi- ciency and the compression ratio, as well as between the work output and the thermal efficiency of the cycle with heat transfer loss are derived. Moreover, the effects of polytropic exponent and heat transfer loss on the Otto cycle performance are analyzed. The results show that the effects of polytropic exponent and heat transfer loss on the Otto cycle performance are obvious. The results obtained in this paper include those of previous lit eratures, and can provide some guidelines for the design and improvement of real Otto heat engines.
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