Influence of Fuel Dilution on the Performance of Diesel Engine Oil

被引：0
|
作者：
Su G. [1 ,2 ,3 ]
Guo L. [4 ]
Wang X. [2 ]
Li W. [2 ]
Li X. [1 ]
Wang J. [5 ]
机构：
[1] School of Control Science and Engineering, Shandong University, Jinan, 250061, Shandong
[2] State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000, Gansu
[3] Unit No92783 of PLA, Qingdao, 266102, Shandong
[4] Center of Technology, Weichai Power Co Ltd, Weifang, 261205, Shandong
[5] School of Mechanical Engineering, Qingdao Technological University, Qingdao, 266520, Shandong
来源：
Mocaxue Xuebao/Tribology | 2019年 / 39卷 / 06期
关键词：
Diesel engine oil; Film thickness; Fuel dilution; Physiochemical properties; Tribological property;
D O I：
10.16078/j.tribology.2019104
中图分类号：
学科分类号：
摘要：
Different fuel diluted engine oils were prepared by adding different proportions 0# diesel (5%, 10%, 15%, 20%) into CK-4 15W40 engine oil. Their physiochemical properties such as viscosity, pour point, flash point, total acid number and total base number were measured. Crankcase coking tester, pressure differential scanning calorimetry, optical interference point contact elastohydrodynamic lubrication tester as well as SRV tester were employed to investigate the coking, oxidation, elastohydrodynamic lubrication and boundary lubrication performances, respectively. Results show that viscosity and flash point experienced a drastic decrease with the increase of dilution rate and fuel dilution had a negligible effect on pour point. Total acid number, total base number and oxidation stability decreased to a certain degree. Film thickness of engine oil decreased with the increase of diesel concentration Friction reducing and anti-wear properties under boundary lubrication regime were also deteriorated with the addition of diesel. © 2019, Science Press. All right reserved.
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页码：730 / 736
页数：6
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