在往复式内燃机中,需要弄清楚的最重要的课题之一就是活塞环与气缸套之间的摩擦特性,以期达到减小摩擦损失或者是解决最近几年伴随着发动机性能的提高而出现的擦伤和磨损等问题。本文是利用液体静压轴承来支撑气缸套这一改进的浮动气缸套法,用以精确地测量在着火运行试验时活塞组件的摩擦力与曲轴转角的函数关系。利用这一装置所获得的试验结果,探讨了发动机的转速、润滑油的粘度,气缸内气体的压力及活塞环的数目对摩擦特性的影响以及在反拖知着火运行试验时摩擦特性的差别。 One of the most important issues to be understood in a reciprocating internal combustion engine is the frictional characteristics between the piston ring and the cylinder liner in order to achieve a reduction of frictional losses or a wipe that has been accompanied by an increase in engine performance in recent years Injuries and wear and other issues. This article is an improved floating cylinder liner that utilizes a hydrostatic bearing to support a cylinder liner to accurately measure the frictional force of the piston assembly as a function of crankshaft angle during a fire run test. Based on the experimental results obtained by this device, the effects of engine speed, viscosity of lubricating oil, pressure of gas in cylinder and the number of piston rings on the frictional characteristics and friction characteristics during anti-dragging fire test were discussed.