本文介绍了应用电子计算机计算发动机的各种设计参数对充气效率的影响的数学模型、计算流程图和计算结果。从中可以看出,发动机的各种设计参数对充气效率的影响。在新设计或改进原有的四冲程汽、柴油机产品时,可利用这一程序予测充气效率的数值或改变设计参数,使充气效率理想化。 This paper introduces the mathematical model, the calculation flow chart and the calculation results of the influence of various design parameters of the engine on the charging efficiency by using electronic computer. It can be seen from the various design parameters of the engine on the inflatable efficiency. In the new design or improvement of the original four-stroke steam and diesel engine products, this procedure can be used to predict the value of the inflatable efficiency or to change the design parameters to make the inflatable efficiency ideal.