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Additive depletion in engine oil and the effects on tribology performance

发动机油中添加剂的消耗及其对摩擦学性能的影响

基本信息

批准号：
1947530
负责人：
金额：
--
依托单位：
University of Leeds
依托单位国家：
英国
项目类别：
Studentship
财政年份：
2017
资助国家：
英国
起止时间：
2017 至无数据
项目状态：
已结题

来源：
https://gtr.ukri.org/projects?ref=studentship-1947530
关键词：
Additive depletion engine oil effects

项目摘要

Engine manufacturers are facing a growth in demand on how they can increase and lengthen oil change intervals of lubricants, therefore reducing the total cost for customers over the life of an engine, as well as reducing the impact of waste oil on the environment. However, to improve engine oil properties, several additive elements are added to engine oil, which reduce friction and wear and enhance oil properties during harsh working conditions. Over the lifespan of lubricating oil, additive elements are influenced by oil contaminations such as soot and water. Soot particles and water absorb or deplete lubricating additives, which affect engine oil performance and increase the friction and wear of engine components. Additive depletion is an interesting subject due to improvements of media filtration systems, using centrifugal or ultra-filtration systems. The most commonly asked question when using advanced filtering processes is; does the oil filter have an ability to remove additives from the oil or just remove contaminants? By finding the amount of additives that have been depleted and replenishing them can extend the engine drain intervals, reduce waste oil generation and increase the lifespan of lubricating oil. Aims and Objectives:- Study the effects of water in fresh and ageing oil on tribology performance. - Finding the optimal water level in oil which does not affect engine oil performance. - Remove any extra water over the optimal level and if water is removed how it affects the chemical analysis of oil. - Replenish depleted additives and study the tribology performance before and after additives replenishment. Applications and benefits:- Reduce the effects of water contamination in engine oil which can affect physical and chemical properties of oil. - Increase the lifespan of engine components by reduce the effect of water on the metal surfaces. - Determine depleted additive in engine oil and replenish the additive can increase the oil change intervals especially for heavy vehicles.- Reduce the amount of waste oil generation and the effects on environment.

发动机制造商正面临着如何增加和延长润滑油换油周期的需求增长，从而降低客户在发动机寿命期间的总成本，并减少废油对环境的影响。然而，为了改善发动机油的性能，在发动机油中添加了几种添加剂元素，这些添加剂元素在恶劣的工作条件下减少摩擦和磨损并增强油的性能。在润滑油的使用寿命期间，添加剂元素会受到油污染物（如烟灰和水）的影响。碳烟颗粒和水会吸收或消耗润滑添加剂，从而影响发动机油的性能并增加发动机部件的摩擦和磨损。由于使用离心或超滤系统的介质过滤系统的改进，添加剂消耗是一个有趣的主题。在使用先进的过滤工艺时，最常被问到的问题是：机油滤清器是否有能力从机油中去除添加剂或仅去除污染物？通过找到已经耗尽的添加剂的量并补充它们可以延长发动机换油周期，减少废油的产生并增加润滑油的使用寿命。目的和目标：-研究新鲜油和老化油中的水对摩擦学性能的影响。- 找到不影响发动机油性能的最佳机油含水量。- 去除任何超过最佳水平的多余水分，如果水分被去除，它将如何影响油的化学分析。- 补充耗尽的添加剂，研究添加剂补充前后的摩擦学性能。应用和好处：-减少发动机油中的水污染的影响，这可能会影响油的物理和化学性质。- 通过减少水对金属表面的影响来延长发动机部件的使用寿命。- 确定发动机油中耗尽的添加剂并补充添加剂可以增加换油周期，特别是对于重型车辆。减少废油产生量及对环境的影响。