Bearing Score Analysis of BM15LC Engine Crankshaft 在线阅读 下载PDF
Author of the article:MA Dongwei;ZHANG Yuanhao;HU Zhihua;ZHAO Qi
Author's Workplace：School of Materials and Engineering,Hubei University of Automotive Technology,Shiyan 442002,China
Key Words：crankshaft bearing bush hard particle bearing score
Abstract：
The crankshaft bearings in BM15LC engine was analyzed by means of macroscopic analysis,scanning electron microscopy(SEM),energy spectrum analysis(EDS)and microstructure analysis.The results show that the engine crankshaft and bearing shells show obvious abrasive wear characteristics,the surface wear marks of crankshaft is shallow and no blocky exfoliation.The alloy layer on the inner surface of the bearing shells is partially exfoliated,and many hard iron particles are embedded.The hard particles that initially entered the gap between the crankshaft and the bearing bush are likely to come from the uncleaned cylinder block after machining,which is the source of the engine crankshaft pull bush.
