Effect of Diesel Engine Lubricating Oil on Turbocharger Compressor Soot Deposits under Oil Dilution Conditions  

作　　者：Xu Yan Yang He Lu Wentong Lin Lei Xing Jianqiang Wang Yajun 

机构地区：[1]SINOPEC Research Institute of Petroleum Processing Co.,Ltd.,Beijing 100083,China [2]SINOPEC Key Laboratory of Bio-liquid Fuels,Beijing 100083,China

出　　处：《China Petroleum Processing & Petrochemical Technology》2024年第4期1-8,共8页中国炼油与石油化工(英文版)

基　　金：financially supported by SINOPEC(Grant No.124015)。

摘　　要：Due to increasingly stricter emissions on particulate matter(PM)emissions,diesel particulate filter(DPF)regeneration has become the most widely used and effective technology to reduce PM emissions.However,using incylinder post-injection-based active DPF regeneration can increase engine oil dilution,thus affecting engine lubrication.Using a 4-cylinder turbocharged direct-injection diesel engine,this study analyzed the effect of lubricating oil on the formation and properties of turbocharger compressor soot deposits associated with engine oil dilution.Three diesel engine lubricating oils(CJ-4,CK-4,and CJ-4*)were selected,with each subjected to 200 hours of engine bench testing at 8%oil dilution.The composition of CJ-4*was the same as that of CJ-4 but with reduced amount of additives.Soot deposits were collected and analyzed.A merit calculation method was established to rate turbocharger deposits.Transmission electron microscopy,Raman spectroscopy,Fourier transform infrared spectroscopy,and thermogravimetric analysis(TGA)were used to characterize the morphology and composition of soot samples.The results showed that turbocharger deposits from CJ-4 and CK-4 were less than that from CJ-4*.The deposits from CJ-4*showed a more disordered morphology,whereas those from CJ-4 and CK-4 exhibited a higher degree of order.TGA results showed that the soluble organic fraction content in the deposit derived from CJ-4*was much higher than that obtained from CJ-4 and CK-4.

关 键 词：diesel engine lubricating oil oil dilution soot deposit turbocharger compressor 

分 类 号：X701[环境科学与工程—环境工程]