滚轮从动件发动机试验旧油的分析研究  

ANALYSIS OF USED DIESEL ENGINE OIL FROM RFWT ENGINE TEST

作　　者：徐杰[1] Xu Jie(SINOPEC Research Institute of Petroleum Processing ,Beijing 100083)

机构地区：[1]中国石化石油化工科学研究院,北京100083

出　　处：《石油炼制与化工》2018年第6期61-65,共5页Petroleum Processing and Petrochemicals

摘　　要：对6种柴油机油在滚轮从动件(RFWT)发动机试验后的旧油进行了理化分析、核磁共振磷谱(^(31) P NMR)分析,对RFWT试验件磨斑表面进行了X射线光电子能谱(XPS)深度刻蚀分析。结果表明:碱性ZDDP、中性ZDDP及其初期降解产物二硫代磷酸酯构成的有效磷是抗磨的主要组分,有效磷转化为中间磷的比例越少,磨损越低;ZDDP及其降解产物在低磨损试验件表面形成了较厚的含有硫化物、硫酸盐、磷酸盐等化合物的保护膜,起到了抗磨作用。Six used diesel engine oils from RFWT engine test were studied on changes in physical and chemical properties and were characterized by 31P NMR.The ZDDP degradation was investigated by NMR spectroscopy and the depth etchings on the surface of RFWT test pieces were analyzed by X-ray photoelectron spectroscopy（XPS）.The results showed that the available phosphorus from bZDDP,nZDDP,and dithiophosphates,the decomposition product in early stage is the key effective anti-wear component.The lower the ratio of effective phosphorus to intermediate phosphorus,the lower the wear is.XPS surface analysis revealed a thicker anti-wear film on surface of lower wear test part by ZDDP and its degradation products serves as anti-wear protection.The film contains phosphate,sulfide and sulphate.

关 键 词：滚轮从动件 发动机试验 柴油机油 磨损 烟炱 ZDDP 

分 类 号：TE626.3[石油与天然气工程—油气加工工程]