摘要
主轴承是柴油机的主要摩擦副之一,其工作时的润滑状态直接影响船舶柴油机整机的工作性能。特别是在大功率低中速船用柴油机中,主轴承连续工作时间更长,负荷更大,工况更加恶劣,难以形成良好的动压润滑。因此,论文以9缸G32大功率船用柴油机为例,对各段主轴承的轴承载荷,轴心轨迹,最小油膜厚度进行了计算分析,为判断各道主轴承的润滑情况,精确预测轴承性能,以及判断轴系是否存在异常工作情况提供了依据。
The main bearing is one of the primary friction pairs of a diesel engine. The lubrication condition affects the performance of the marine diesel engine directly. Continuous working time of main bearings is longer, load is higher and working condition is even worse especially in low medium speed marine diesel engine, making it difficult to form good dynamic pressure lubrication. Therefore, this paper takes a high - power marine diesel G32 with 9 cylinders as an exam- ple, calculates and analyzes the load, the orbit of main shaft center and the minimum thickness of oil film in each main bearing, providing the basis to estimate each main bearing＇ s lubricating condition, predicting each main bearing＇ s per- formance precisely and judging whether there exists abnormal working conditions in each main bearing.
出处
《现代机械》
2013年第2期42-48,共7页
Modern Machinery
关键词
大功率船用柴油机
轴承载荷
轴心轨迹
最小油膜厚度
high power marine diesel engine
bearing load
the orbit of shaft center
the minimum thickness of oil film
