基于远程技术的冷藏车辆的运行和排放特性分析
Xionghui Zou1, Yanyan Yang2, Zhengjun Yang1
1CATARC Automotive Test Center(Tianjin)Co.,Ltd, Tianjin, 300300, China.
Heliyon
|February 24, 2025
概括
柴油车辆的远程在线监控显示,高置比率显著影响排放和燃料使用. 冷藏式卡车的NOx排放量更高,特别是重型车型,尿素消耗与燃料使用有关.
科学领域:
- 环境科学 环境科学
- 汽车工程 汽车工程
- 运输技术 运输技术 运输技术
背景情况:
- 远程在线监控可有效跟踪正在使用的柴油车辆.
- 了解运营特征,排放和燃料消耗对于车队管理和环境影响评估至关重要.
研究的目的:
- 在一年内比较和分析轻型,中型和重型冷柴油车的运行特性,排放和燃料消耗.
- 确定影响冷藏柴油车排放和能源消耗的关键因素.
主要方法:
- 利用车载诊断系统 (OBD) 的远程数据进行分析.
- 在不同车辆类别 (轻型,中型,重型) 中比较运行数据,排放因子和燃料消耗.
- 分析了氧化 (NOx) 排放和尿素消耗模式的季节性变化.
主要成果:
- 冷却车辆的置比率比0到50公里/小时的速度区间中的平均值高.
- 氧化 (NOx) 排放因子在冬季和夏季月份都会升高.
- 与中型 (45%更高) 和轻型 (54.7%更高) 车辆相比,重型冷藏车的年平均NOx排放因子 (0.232g/km) 显著更高.
- 尿素含量每100公里下降3%-5%,反映了每月燃料消耗趋势.
结论:
- 高置比率是影响冷藏柴油车总排放量和能源消耗的关键因素.
- 季节性温度变化影响氧化排放,冬季和夏季的峰值.
- 随着车辆尺寸的增加,氧化排放强度也会增加,这凸显了重型卡车有针对性的排放控制战略的需要.
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