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. **

通过快速引入各种电气化技术，包括各种混合动力，燃料电池和电池电动汽车，其中大多数仍然依赖内燃机（ICES），因此该领域的持续进展仍然很重要。不断增长的电气介绍了内燃机设计的新方法，这将使冰和动力总成电气化之间的协同作用更高。除了开发用于冰的先进燃烧技术外，汽车制造商还非常关注摩擦降低以提高冰效率和燃油经济性，因为摩擦的降低20-30％可以节省3-5％的燃油。一个重要的策略是使用酒窝，凹槽和其他表面纹理来控制滑动接口中的摩擦。 ***这项研究将通过以下活动开发一种新的成本效益的表面纹理方法：i）使用一种新的等离子体放电方法（称为等离子体纹理）生成表面纹理模式（即凹痕）； ii）血浆放电过程参数（即电流和电压）对所选合金的表面纹理形态和材料微结构的研究影响。该项目的目的是i）进行受控的实验，该实验会产生不同的Dimple几何形状和Dimple的尺寸，以减少三种润滑方案中的摩擦； ii）石油粘度和添加剂对纹理图案表面摩擦的研究影响。研究小组将i）评估纹理表面的抗衣特性，并探索质地模式与对应面的兼容性，尤其是在边界润滑方面； 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体纹理技术，以在圆柱衬里和轴承材料上创建具有不同尺寸和面积密度的酒窝，以减少动力总成的摩擦。这项研究将更好地理解凹痕表面纹理对降低寄生虫（摩擦）损失的不同润滑状态下摩擦的影响。如果20％的车辆使用该技术，导致燃油效率提高了1-2％，则北美每天将节省600万升燃油。因此，除技术进步外，该提议的项目在环境保护中将非常重要。该研究项目还将为加拿大汽车和制造业的重要HQP培训和人员提供。 **