摘要
针对 EQ6 10 0型汽油机 ,利用内燃机磨合台架试验装置对所研制的内燃机专用磨合油与普通 15 W/ 40内燃机油进行对比磨合试验 ,对磨合油液进行直读铁谱分析 ,对缸套 -活塞环磨合表面形貌及元素组成进行测试分析 .结果表明 :专用磨合油的磨合效果明显优于普通内燃机油 ;超细金刚石微粉可以加速磨合进程 ,分化并减小磨屑尺寸 ,从而避免缸壁拉伤和改善缸套 -活塞环摩擦副的摩擦学特性 .
Comparative running-in bench test of EQ6100 engine was carried out to investigate the running-in effect of conventional 15W/40 internal combustion engine oil and a specially formulated running-in oil for the engine (coded as MR-oil). A direct reading ferrograph TPD-2 was used to analyze the wear debris compositions of the tested oil sample after running-in. The morphologies and elemental compositions of the surface of cylinder-piston ring were observed and examined with a Talysurf-6 profilometer and a scanning electron microscope (SEM) equipped with energy dispersive spectrometer (EDAX). As the results, ultradispersed diamond (UDD) in MR-oil helps to accelerate the running-in process and to smash larger wear debris in the running-in oil to small ones, therefore to prevent the cylinder bore from abrasion by large hard wear debris. This contributes to improve the tribological properties of cylinder-piston ring pair and the running-in quality.
出处
《摩擦学学报》
EI
CAS
CSCD
北大核心
2001年第1期59-62,共4页
Tribology
关键词
内燃机
发动机油
磨合
表面改性
实验研究
Internal combustion engines
Lubricating oils
Morphology
Rings (components)
Surface treatment
