再生制动系统有效地减少了制动磨损颗粒的形成
Qijun Zhang1, Jiawei Yin1, Tiange Fang1
1Tianjin Key Laboratory of Urban Transport Emission Research & State Environmental Protection Key Laboratory of Urban Ambient Air Particulate Matter Pollution Prevention and Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300071, China.
Journal of hazardous materials
|December 28, 2023
概括
新的研究表明,新能源汽车 (NEV) 的制动磨损颗粒 (BWPs) 与传统燃料汽车 (CFV) 显著不同. 在制动过程中,NEV的超细颗粒物排放量显著降低,为未来的排放标准提供了洞察力.
科学领域:
- 环境科学 环境科学
- 汽车工程 汽车工程
- 粒子物理学 粒子物理学
背景情况:
- 车磨损颗粒 (BWPs) 是非排气车辆排放的主要来源.
- 现有的BWP研究主要集中在传统燃料汽车 (CFV) 上,对新能源汽车 (NEV) 的数据有限.
研究的目的:
- 通过使用一种新型测试系统,研究和描述新能源汽车的BWP排放.
- 为了在不同驾驶条件下比较NEV和CFV之间的BWP排放配置文件.
主要方法:
- 专门为新能源汽车开发一个独立的BWP排放测试系统.
- 在代表性NEV和CFV上使用底盘动力表在各种测试周期中进行BWP排放测试.
- 分析单颗粒形态学来对BWP进行分类.
主要成果:
- 与汽油汽车相比,具有再生制动系统的新能源汽车表现出明显的BWP排放特征.
- 在CFV的车事件中,过渡性排放显示出更高的峰值度,而在NEV的车阻力事件中,NEV显示出更高的峰值.
- 新能源汽车的连续制动导致超细颗粒度超过3个数量级低于汽油汽车的度.
- 根据形态学,BWP被分为含碳,富铁和混合金属颗粒.
结论:
- 这项研究提供了关于NEVs现实的BWP排放特征的关键数据.
- 这些发现支持开发针对性排放标准和对新能源汽车的控制策略.
- 这项研究强调了新能源汽车在颗粒物排放方面对环境的好处.
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