单位气缸阻尼系数问题的研究（二）──阻尼系数变化的实验分析

Investigation on Damping Coefficient of Torsional Vibration per Cylinder (Part 2)──Experiment in Variation with Crankangle

作为前文的继续，作者利用带有十字头结构的单缸模型机，通过回转与“非回转”实验，对发动机动力轴系扭转振动中的单位气缸阻尼系数问题进行了系统的研究，揭示了单位气缸扭振阻尼系数随曲柄转角变化的规律，并指出了形成这种变化的主要原因。

The problem of the torsional vibration 'damping coefficient per cylinder' of an internal combustion engine shaft system is tackled by means of a single-cylinder motored model of thecrosshead type through a series of 'stationary' and running tests as a continuation of the researchdescribed in Part 1. The variational regulation of damping coefficient per cylinder with crankangle is revealed and the main reason of forming the variation is also presented in the paper.