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升级乘用车排放标准有助于减少中国空气污染风险,因为电气化的不确定性

Hongyi Xie¹, Bin Chen¹, Min Dai¹

¹Fudan Tyndall Center and Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention (LAP3, Department of Environmental Science and Engineering, Fudan University, Shanghai 200438, China.

Environmental science & technology

|February 27, 2024

概括

将乘用车升级到CHINA 7标准对于空气质量至关重要. 这一标准即使电动汽车的采用速度缓慢,也确保了减排,为中国提供了弹性战略.

科学领域:

环境科学环境科学
汽车工程汽车工程
气候政策气候政策

背景情况:

中国的CHINA 7标准旨在减少乘用车排放,这对于空气质量管理至关重要.
中国的2060年碳中和目标推动了电动汽车 (EV) 的采用,这可能使排放标准看起来多余.
在不确定的电动汽车普及的情况下,严格标准的减排效益需要彻底调查.

研究的目的:

评估中国升级乘用车排放标准 (中国7) 的减排效益.
评估排放标准在减轻空气污染和二氧化碳排放方面的作用,考虑不同的电气化场景.
为乘用车排放标准升级提供全球参考.

主要方法:

减少排放的车队级分析.
在不同的CHINA 7和电气化场景下对CO2和NOx排放的建模.
对减排强度与电气化贡献的比较评估.

主要成果:

升级到CHINA 7可以弥补因电动汽车采用速度慢于预期而损失的排放减少.
在最佳情景下,到2050年,中国7可以显著减少二氧化碳 (至0.047亿) 和氧化物 (至8.2×10^3).
在非极端的电动汽车场景中,中国7号是减排的主要驱动力,超过了电气化的影响.
中国7号解决了极端电动汽车场景中插电式混合动力电动汽车排放量的增加.

结论:

早期采用严格的排放标准,如CHINA 7,可以提高对空气污染风险的抵抗力.
排放标准对于空气质量和气候目标至关重要,无论电气化速度如何.
中国在严格标准方面的经验为全球乘用车排放政策提供了有价值的典范.

关键词:

空气污染物的空气污染物.碳中和是指碳中立的电气化的电气化新的车辆排放标准汽车排放标准乘用车车队的乘用车车队.

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