山地道路上的颗粒量排放:机器学习从道路测试中的见解
Zhiwen Jiang1, Yujie Wu1, Lin Wu1
1Tianjin Key Laboratory of Urban Transport Emission Research, College of Environmental Science and Engineering, Nankai University, Tianjin, 300071, China.
Environmental research
|October 12, 2025
概括
在山地道路上控制车辆颗粒物数量 (PN) 排放是具有挑战性的. 的坡度和高海拔地区显著增加PN排放量,特别是柴油车辆,需要优化驾驶策略.
科学领域:
- 环境科学 环境科学
- 汽车工程 汽车工程
- 公共卫生 公共卫生
背景情况:
- 山地道路对车辆排放控制提出了独特的挑战.
- 微粒子数量 (PN) 排放是一个关键的空气质量和公共卫生问题.
研究的目的:
- 分析中国林山区车辆的PN排放特性.
- 评估地形,驾驶条件和环境对PN排放的影响.
- 制定减轻山区PN排放的战略.
主要方法:
- 在路上测试轻型汽油和柴油车辆.
- 整合可解释的机器学习 (集成模型,SHAP分析).
- 分析地形,驾驶参数 (速度,VSP),高度和环境因素.
主要成果:
- 的坡度增加了PN排放量高达132%由于减速和升高的VSP.
- 高海拔 (> 1.6 公里) 加剧了PN排放,柴油车更加敏感.
- 确定了非线性地形驱动器相互作用,最佳速度范围为25-70公里/小时,以最大限度地减少PN.
- 一个协同的高度梯度效应将排放放大1.2 - 3.6倍.
结论:
- 与地形集成的预测模型和速度优化对于管理山区交通排放至关重要.
- 了解非线性地形驱动器相互作用是制定有效的减排战略的关键.
- 这项研究为在具有挑战性的地理地形中减少车辆PN排放提供了科学基础.
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