Multiscale tribological modelling of a novel sliding cam transmission system for internal combustion engines

内燃机传动系统依靠活塞、曲轴和变速箱从燃烧室向轴提供动力。这些机器部件经过了彻底的优化，并广泛用于一系列产品，然而，不同配置的传动系统有可能在能源效率和减排方面提供显著改进。该项目旨在与希腊的G-Drill项目合作，探索一种新型的内燃机传动系统。他们的创新概念旨在通过将传统的传动系统替换为直接位于燃烧器和变速箱之间的滑动凸轮接口来提高性能。这给这种装置的润滑界面带来了几个摩擦学挑战，需要进一步研究。还需要新的建模方法来弥合现有能力与创新设计理念之间的差距。目的：通过建立多尺度的滑动凸轮传动系统的润滑界面模型，并与传统内燃机的效率进行比较，来研究新型滑动凸轮传动系统的多尺度摩擦学性能。目的：1.使用单尺度计算方法对新型滑动凸轮传动系统的润滑界面进行仿真。2.扩展模拟方法以包含多尺度现象，例如表面特征和粗糙度接触的存在。3.确定滑动凸轮系统的摩擦学系统性能，并与常规设计进行效率比较。4.通过与项目合作伙伴协作，使模拟开发与并行实验保持一致，从而验证发现。

Internal combustion engine transmission systems rely on pistons, crankshafts, and gearboxes to provide power from the combustion chamber to the axels. These machine components have been optimised thoroughly and are widely used industrially for a range of products, however different configurations of the transmission system have the potential to provide significant improvements in terms of energy efficiency and emissions reduction. This project intends to explore a novel transmission system for IC engines in collaboration with project partners G-Drill based in Greece. Their innovative concept aims to improve performance by replacement of a conventional transmission system with a sliding cam interface located directly between the combustor and gearbox. This creates several tribological challenges for the lubricated interfaces of such a device which need further investigation. New modelling approaches are also needed to bridge the gap between current capabilities and this innovative design concept.Aim: To investigate the multiscale tribological performance of a novel sliding cam transmission system by developing a multiscale model of the lubricated interfaces and comparing efficiency versus conventional internal combustion engines.Objectives: 1. Simulate the lubricated interfaces of a novel sliding cam transmission system using single scale computational methods. 2. Expand the simulation approach to incorporate multiscale phenomena such as the presence of surface features and asperity contact. 3. Determine the tribological system performance of the sliding cam system and compare efficiencies versus conventional designs. 4. Validate findings by collaborating with project partners to align simulation development with concurrent experimentation.