Tribological response of fresh and used engine oils: The effect of surface texturing, roughness and fuel type

被引:27
|
作者
Cousseau, Tiago [1 ]
Ruiz Acero, Juan Sebastian [1 ]
Sinatora, Amilton [1 ]
机构
[1] Univ Sao Paulo, LFS Lab Surface Phenomena, Av Prof Mello Moraes 2231, BR-05508970 Sao Paulo, SP, Brazil
基金
巴西圣保罗研究基金会;
关键词
Surface texturing; Engine oils; Oil degradation; Friction coefficient; MoDTC; OXIDATIVE-DEGRADATION; GREASE DEGRADATION; FRICTION REDUCTION; BEARING TESTS; MODTC; CONTACT; LUBRICATION; MECHANISMS;
D O I
10.1016/j.triboint.2015.11.016
中图分类号
TH [机械、仪表工业];
学科分类号
0802 ;
摘要
Smooth and rough anisotropic surfaces were used to evaluate the influence of surface roughness and texture on the in situ formation of MoS2 from MoDTC in reciprocating sliding tribotests. In order to also assess the influence of the fuel type contamination (gasoline and ethanol) on the oil properties and tribological performance, the experiments were carried out with an additive free base oil and with a fully formulated 5W30-SM engine oil, as new and after running in dynamometers tests fuelled with ethanol and gasoline. Both texture and fuel types were shown to influence the friction coefficient and wear by changing the tribofilm formation. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码:60 / 69
页数:10
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