Additive depletion in engine oil and the effects on tribology performance

发动机制造商面临着越来越多的需求，他们如何增加和延长润滑油的换油间隔，从而降低客户在发动机使用寿命内的总成本，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，这些添加剂可以减少摩擦和磨损，并在恶劣的工作条件下提高油的性能。在润滑油的使用寿命内，添加剂元素会受到油污(如烟尘和水)的影响。烟尘颗粒和水会吸收或消耗润滑油添加剂，影响发动机油的性能，增加发动机零部件的摩擦磨损。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。在使用高级过滤工艺时，最常被问到的问题是：机油过滤器是否有能力去除机油中的添加剂或仅去除污染物？通过找出已经耗尽的添加剂的量并补充它们，可以延长发动机排气间隔，减少废油产生，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水分对摩擦学性能的影响。-寻找不影响发动机油性能的最佳油品水位。-去除超过最佳水平的任何多余的水，以及如果水被去除，它将如何影响油的化学分析。-补充耗尽的添加剂，并研究添加剂补充前后的摩擦学性能。用途和优点：-减少发动机油中水污染的影响，因为水污染会影响机油的物理和化学性质。-通过减少水对金属表面的影响来增加发动机部件的寿命。-确定发动机油中耗尽的添加剂，并补充该添加剂可增加换油间隔，特别是对重型车辆。-减少废油量和对环境的影响。

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.