Reducing emissions, increasing comfort: Optimizing alumina coatings on electric vehicle brake rotors

非废气排放（NEE），如刹车粉尘，占所有车辆颗粒物排放的近一半。在成功实施了限制汽车尾气排放的政策后，立法者现在将注意力转向了汽车尾气排放。已经提出的技术，以减少制动磨损微粒包括再生制动，盘涂层，和新的垫配方。然而，这些技术是昂贵的，再生制动实际上会导致更大的转子腐蚀。该项目将开发并实施一种具有成本效益的涂层技术，称为PEA（等离子电解镀铝），以减少NEE并提高制动转子的耐腐蚀性。各种制动测功机测试将在部件级别进行，然后是车辆级别的测试。铝基涂层将产生另一种磨损和摩擦机制，提供更一致的摩擦力，减少每次制动时的粘滑问题，从而获得更好的驾驶舒适性和调制性。涂层制动系统有望减少制动距离，并保持轮辋清洁得多。涂层转子将显示最小的潜在磨损，以匹配乘用车的典型寿命。因此，拟议的制动转子氧化铝涂层技术以及来自工业合作伙伴的新配方刹车片的目标不仅是通过减少新能源能源来改善空气和水质，而且还可以提高乘坐舒适性并减少浪费，从而为电动汽车带来更安全，更可持续的未来。该项目将帮助汽车oem和供应商更接近于生产“真正的”零排放汽车，以实现人人享有电动汽车的目标。

Non-exhaust emissions (NEE), such as brake dust, represent nearly half of all vehicle particulate matter emissions. Having successfully implemented policies limiting tailpipe exhaust emissions, legislators are now turning their attention towards brake emissions. Technologies that have been proposed to reduce brake wear particulates include regenerative braking, disc coatings, and new pad formulations. However, these techniques are expensive, and regenerative braking can actually lead to greater rotor corrosion. This project will develop and implement a cost-effective coating technology, called PEA (plasma electrolytic aluminating), to reduce NEE and increase corrosion resistance of brake rotors. Various brake dynamometer tests will be conducted at component levels, followed by vehicle-level tests. The alumina-based coating would result in an alternative wear and friction mechanism that delivers more consistent friction forces and decrease stick-slip problems during each brake event for better driving comfort and modulation. The coated brake system is expected to reduce braking distance and keep wheel rims much cleaner. The coated rotors would show minimum wear potentially to match a typical lifespan of a passenger car. Thus, the proposed alumina coating technology for brake rotors together with newly formulated brake pads from an industrial partner will target to not only improve air and water quality through NEE reduction, but also promote rider comfort and reduce waste, leading to a safer and more sustainable future for electric vehicles. This project will assist auto OEMs and suppliers to get closer to producing "real" emission-free vehicles towards the goal of electromobility for everyone.