长期追风测量:大型城市中的重型卡车的排放特征和空间模式
Pan Yang1, Hui Wang1, Xiaomeng Wu1
1State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing, 100084, China; State Environmental Protection Key Laboratory of Sources and Control of Air Pollution Complex, Beijing, 100084, China.
Environmental pollution (Barking, Essex : 1987)
|September 5, 2024
概括
在深监测重型柴油卡车的排放量,发现新标准的氧化 (NOX) 和黑碳 (BC) 显著减少. 先进的后处理系统是控制这些空气污染物的关键.
科学领域:
- 环境科学 环境科学
- 大气化学 大气化学
- 运输工程 运输工程
背景情况:
- 管理大城市的空气质量需要对重型柴油卡车 (HDDT) 排放的准确评估.
- 氧化 (NOX) 和黑碳 (BC) 是HDDT影响城市空气质量的关键污染物.
研究的目的:
- 用移动羽毛追逐来评估深HDDT的真实世界排放.
- 评估不同排放标准 (中国III-VI) 和后处理技术对NOX和BC排放的有效性.
主要方法:
- 移动羽毛追逐被用来监测来自7778多个HDDT的排放.
- 分析包括NOX和BC的排放因子 (EF),考虑车辆标准,后处理系统,季节变化和空间因素.
主要成果:
- 与较旧的标准相比,中国V和VI型卡车的NOX EF (分别为27%和85%) 在车队平均水平上显著降低.
- 中国V卡车的先进后处理系统 (DOC,DPF,SCR) 降低了NOX42%,BC降低了61%.
- 季节性变化影响了排放,冬季NOX EF较高,BC.EF较低.
结论:
- 现实世界的排放监测对于有效控制HDDT污染至关重要.
- 更严格的排放标准和先进的后处理技术对于减少大城市的NOX和BC至关重要.
- 环境温度和道路类型影响HDDT的排放特性.
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