本文介绍了测定柴油机机械损失的不同方法,提供了拖动法的实测数据和经验公式。在缺少实验设备的情况下,利用计算公式可以估算柴油机各部分的机械损失。文中还为减少机械损失指出了方向并提出了措施。 In this paper, different methods to measure the mechanical loss of diesel engine are introduced, and the measured data and empirical formula of dragging method are provided. In the absence of experimental equipment, the use of calculation formula can estimate the mechanical loss of various parts of the diesel engine. The paper also pointed out the direction of reducing mechanical loss and proposed measures.