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首页> 外文会议>29th Leeds-Lyon Symposium on Tribology Sep 3-6, 2002 University of Leeds, UK >Optimised Additive-Surface Material Combinations for Reduced Friction Wear in Internal Combustion Engines
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Optimised Additive-Surface Material Combinations for Reduced Friction Wear in Internal Combustion Engines

机译：优化的添加剂表面材料组合，可降低内燃机的摩擦和磨损

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摘要

There has been a general increase in the level of CO_2, NO_x and particulate emissions through the consumption of hydrocarbon fuels over the last 2-3 decades. These emissions have a detrimental effect on the environment and, as such, are undesirable. In an attempt to reduce emissions and to increase fuel efficiency of internal combustion engines there have been developments in two key areas: lubricant technology and materials technology. Improvements in lubricant formulation and/or improvements in the material technology performance of internal combustion engine components can potentially lead to an overall reduction in friction and wear. Because of the increased use of new materials and surface engineering in engines it is necessary to understand their lubrication requirements, which are anticipated to be different to those of conventional Fe-based materials. The work presented in this paper addresses aspects of lubrication of a traditional Cr-bearing steel and Al-Si alloy-based components. In particular, the interaction of surfaces with lubricant additives is investigated. Tribological tests have been performed and are supported by post-test examination using X-ray Photoelectron Spectroscopy (XPS), and Environmental Scanning Electron Microscope (ESEM) with Energy Dispersive X-ray analysis (EDX). Preliminary results show that fully formulated lubricant oils are effective in the reduction of wear and friction for ferrous-based systems but not for aluminium systems. Initial XPS and EDX data suggests that a relatively thick anti-wear film is formed on ferrous materials but is thin (and therefore unstable) for steel on aluminium systems. In completely non-ferrous systems the wear film is absent. In this paper the fundamental aspects of the film formation as well as the practical aspects of the results will be discussed.
机译：在过去的2-3年中，通过消耗碳氢化合物燃料，CO_2，NO_x和颗粒物排放水平普遍增加。这些排放物对环境有不利影响，因此是不希望的。为了减少排放并提高内燃机的燃料效率，在两个关键领域进行了开发：润滑剂技术和材料技术。润滑剂配方的改进和/或内燃机部件的材料技术性能的改进可能潜在地导致摩擦和磨损的总体降低。由于发动机中新材料和表面工程的使用增加，因此有必要了解它们的润滑要求，这预计与常规的铁基材料不同。本文介绍的工作涉及传统含铬钢和铝硅合金基部件的润滑方面。特别地，研究了表面与润滑剂添加剂的相互作用。已经进行了摩擦学测试，并得到了使用X射线光电子能谱（XPS）和具有能量色散X射线分析（EDX）的环境扫描电子显微镜（ESEM）的测试后检查的支持。初步结果表明，完全配制的润滑油可有效减少铁基系统的磨损和摩擦，但不适用于铝系统。最初的XPS和EDX数据表明，在黑色金属材料上会形成相对较厚的抗磨膜，但对于铝系统上的钢，抗磨膜却较薄（因此不稳定）。在完全有色金属系统中，没有耐磨膜。本文将讨论成膜的基本方面以及结果的实际方面。

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