Plasma Texturing for Friction Reduction of Internal Combustion Engine Components

用于减少内燃机部件摩擦的等离子纹理化

• 批准号: RGPIN-2019-04247
• 负责人: Nie, Xueyuan
• 金额: $ 2.4万
• 依托单位: University of Windsor
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2019
• 资助国家: 加拿大
• 起止时间: 2019-01-01 至 2020-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=684927
• 关键词: Plasma; Texturing; Friction; Reduction; Internal

With rapid introduction of a diverse range of electrification technologies, including various hybrids, fuel cell and battery electric vehicles, the majority of these still rely on internal combustion engines (ICEs) so continuing advances in that area remain important. Growing electrification presents new approaches for internal combustion engine design, which will enable greater levels of synergy between the ICE and powertrain electrification. Apart from developing advanced combustion technologies for ICE, automakers have paid great attention to friction reduction to increase ICE efficiency and fuel economy, since 20-30% reduction in friction can lead to 3-5% fuel saving. An important strategy is the use of dimples, grooves, and other surface textures to control friction in sliding interfaces. *** This research will develop a new cost-efficient surface texturing approach through the following activities: i) generate surface texturing patterns (i.e., dimples) using a new plasma discharging method (called plasma texturing); and ii) study effects of plasma discharging process parameters (i.e, current and voltage) on surface textured morphology and material microstructures of selected alloys. The project intends to i) conduct controlled experiments that create different dimple geometric shapes and dimple's sizes tailored for reducing frictions in three lubrication regimes; and ii) study effects of oil viscosity and additives on friction of the texturally patterned surfaces. The research group will i) evaluate the anti-wear properties of the textured surfaces and explore compatibility of the textural patterns to counterpart surfaces, particularly under the boundary lubrication regime; and ii) finally establish a strategy of friction control via the plasma texturing. The objective of this research is to develop a new plasma texturing technology to create dimples with different sizes and areal densities on cylinder liner and bearing materials for reducing friction of powertrains. The research would provide a better understanding about the influence of dimple surface textures on friction at the different lubrication regimes for less parasitic (friction) losses.*** The plasma texturing technology developed in this research is expected to provide significant friction reduction (20-40%) for piston-cylinder power system, bearing, water pump seals and mechanical seals, etc., resulting in reduced energy consumption and longer durability. If 20% vehicles use the proposed technology, leading to say 1-2% improvement in fuel efficiency, 6 million litres of fuel per day will be saved in North America. Thus, this proposed project will be very significant in environmental protection apart from technical advancement. The research project will also provide the important HQP training and personnel for the Canadian auto and manufacturing sectors. **

随着各种电气化技术（包括各种混合动力汽车、燃料电池和电池电动汽车）的快速引入，其中大多数仍然依赖于内燃机（ICE），因此该领域的持续进步仍然很重要。不断发展的电气化为内燃机设计提供了新方法，这将使内燃机和动力总成电气化之间实现更高水平的协同作用。除了开发先进的内燃机燃烧技术外，汽车制造商还非常注重减少摩擦，以提高内燃机效率和燃油经济性，减少20-30%的摩擦可以节省3-5%的燃油。一个重要的策略是使用凹坑、凹槽和其他表面纹理来控制滑动界面中的摩擦。 *** 这项研究将通过以下活动开发一种新的具有成本效益的表面纹理方法： i) 使用新的等离子体放电方法（称为等离子体纹理）生成表面纹理图案（即凹坑）； ii) 研究等离子体放电工艺参数（即电流和电压）对所选合金的表面织构形貌和材料微观结构的影响。该项目旨在 i) 进行受控实验，创建不同的凹坑几何形状和凹坑尺寸，以减少三种润滑状态下的摩擦； ii) 研究油粘度和添加剂对纹理图案表面摩擦的影响。该研究小组将i）评估纹理表面的抗磨损性能，并探索纹理图案与对应表面的兼容性，特别是在边界润滑状态下； ii) 最终通过等离子体纹理建立摩擦控制策略。这项研究的目的是开发一种新的等离子纹理技术，在气缸套和轴承材料上创建不同尺寸和面密度的凹坑，以减少动力系统的摩擦。该研究将更好地了解凹坑表面纹理对不同润滑状态下摩擦的影响，以减少寄生（摩擦）损失。*** 本研究中开发的等离子纹理技术预计将显着减少摩擦（20- 40%）用于活塞缸动力系统、轴承、水泵密封件和机械密封件等，从而降低能耗并延长耐用性。如果 20% 的车辆使用该技术，也就是说燃油效率提高 1-2%，北美每天将节省 600 万升燃油。因此，本项目除了技术进步之外，在环境保护方面也具有非常重要的意义。该研究项目还将为加拿大汽车和制造业提供重要的总部培训和人员。 **