发动机不同喷油时刻下烟炱对磨损的影响  

Effect of Soot on Wear at Different Engine Injection Time

作　　者：杨国峰 张恩兴 银增辉 湛日景 郝婧 林赫[1] Yang Guofeng;Zhang Enxing;Yin Zenghui;Zhan Rijing;Hao Jing;Lin He(Key Laboratory of Power Machinery and Engineering of Ministry of Education,Shanghai Jiao Tong University,Shanghai 200240,China;Shanghai Marine Diesel Engine Research Institute,Shanghai 201108,China;China Automotive Technology and Research Center Company Limited,Tianjin 300300,China)

机构地区：[1]上海交通大学动力机械与工程教育部重点实验室,上海200240 [2]中国船舶集团有限公司第七一一研究所,上海201108 [3]中国汽车技术研究中心有限公司,天津300300

出　　处：《内燃机学报》2023年第6期539-546,共8页Transactions of Csice

基　　金：国家自然科学基金资助项目(91441129);天津大学内燃机燃烧学国家重点实验室开放课题资助项目(K2021-16)。

摘　　要：为研究不同喷油时刻下烟炱对磨损的影响,选定发动机在两种不同喷油时刻分别运行100 h,并对不同运行时间下发动机润滑油中的烟炱进行分离提取.采用四球机研究了发动机在不同喷油时刻、运行相同时间内产生的烟炱对宏观磨损的影响,并采用扫描电子显微镜等多种分析技术对磨损钢球形貌以及烟炱颗粒的微观结构、石墨层信息、官能团结构及元素等变化规律进行研究,得出烟炱宏观磨损特性与微观特性的内在关联性.In order to study the influence of soot on wear at different injection times,the testing engine was run 100 hours at two different kinds of injection timing,and the soot in engine oil was separated and extracted at dif-ferent operation times.A four ball machine was used to study the influence of soot generated during the same operation time of the engine at different injection times on macroscopic wear.The scanning electron microscope and other analytical techniques were used to study the morphology of worn steel balls and the changing rules of the microstructure,graphite layer information,functional group structure and elements of soot particles.As a result,the internal correlation between the macro wear characteristics and the micro characteristics of soot is found.

关 键 词：发动机润滑油 磨损 宏观特性 微观特性 扫描电子显微镜 

分 类 号：TK428.9[动力工程及工程热物理—动力机械及工程]