浮环轴承用作内燃机轴承研究及试验

本文探讨浮环轴承能否在内燃机轴承中应用.根据内燃机非稳定(动)载荷的特性从理论上分析了浮环轴承的工作特性,在S195柴油机上将原有曲轴主轴承改装为圆柱浮环轴承进行试验,首次获得成功.内燃机启动升速时,当曲轴转速达740r/min 时浮环开始浮起并进入正常运转.当停机减速时,曲轴转速下降到200r/min,浮环才停止转动.浮环一旦浮起就能良好进行工作,完全有可能在非稳定载荷的内燃机中应用,有希望进一步降低内燃机轴承的摩擦功耗和提高使用寿命.

Experimental and Analytical Research on Floating-Ring Bearings for Engine Applications

This study deals with whether floating-ring journal bearings can beused as engine bearings.The performance of the floating-ring journal bearingis analysed,based on its nonstationary load properties.In a S195 4-strokediesel engine,floating-ring bearings were used as main bearings and the firstexperiment was successful.After starting,the ring was lifted off when thecrankshaft speed reached 740 r/min.Once the ring was lifted off,it remainedin normal working order.During the deceleration stage,the ring maintainedits rotation until the crankshaft speed was decreased to 200 r/min and gradu-ally stopped It is possible for floating-ring bearings to be used in engines wherethe load is nonstationary.It is hoped that a reduction in crankshaft bearingpower loss and an increase in bearing lifetime will be provided by the floating-ring bearing.