Molecular dynamics investigation of a model ionic liquid lubricant for automotive applications

被引:18
|
作者
Gkagkas, Konstantinos [1 ]
Ponnuchamy, Veerapandian [2 ]
Dasic, Miljan [3 ]
Stankovic, Igor [3 ]
机构
[1] Toyota Motor Europe NV SA, Adv Technol Div, Tech Ctr, Hoge Wei 33B, B-1930 Zaventem, Belgium
[2] Abylsen Belgium, B-1000 Brussels, Belgium
[3] Univ Belgrade, Sci Comp Lab, Ctr Study Complex Syst, Inst Phys Belgrade, 11080 Belgrade, Serbia
关键词
Friction; Molecular dynamics; Ionic liquid; Drivetrain; FRICTION; SIMULATIONS; SURFACES; SCALE; FILMS;
D O I
10.1016/j.triboint.2016.12.017
中图分类号
TH [机械、仪表工业];
学科分类号
0802 ;
摘要
In the current work we present a new modelling approach for simulating meso scopic phenomena related to lubrication of the piston ring cylinder liner contact. Our geometry allows a variable confinement gap and a varying amount of lubricant in the gap, while avoiding the squeeze-out of the lubricant into vacuum. We have implemented a coarse grain molecular dynamics description of an ionic liquid as a lubricant which can expand into lateral reservoirs. The results have revealed two regimes of lubrication, an elasto-hydrodynamic one under low loads and one with low, velocity-independent specific friction, under high loads. The observed steep rise of normal forces at small plate-to-plate distances is an interesting behaviour that could potentially be exploited for preventing solid solid contact and wear.
引用
收藏
页码:83 / 91
页数:9
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