内燃机万有特性试验曲线的绘制

Plotting the Universal Performance Curves of Combustion Engines

使用同一组数据，由不同的试验人员绘制内燃机的万有特性曲线时，将使曲线的形状存在着差异。为尽量减小这种人为因素所造成的误差，提高试验精度，介绍了一种绘制内燃机万有特性曲线的方法。提出了原始特性曲线的概念，并分析了它对万有特性曲线的影响。

Practive shows that there will be difference existing in the shape of the universal performance curres plotted by different persons with the same set of figures. In ovder to minimize theerror due to personal effect and improve the testing precision,a kind of plotting method for the universal per formance curves has been recomnended. A concept of inital performance curve has been introduced and effect of the concept to the universal performance curve analysed.