国六轻型汽油车温室气体排放特征

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Abstract The World Light Vehicle Test Cycle (WLTC) was used to measure the emissions of 84 China VI light-duty gasoline vehicles, including 6hybrid vehicles. The results showed that the greenhouse gas emissions of vehicles generally increase with engine displacement. Vehicles with larger displacements usually have more complex engine designs, which increases the uncertainty of greenhouse gas emissions. The CO₂ growth rate caused by the CH₄ and N₂O emissions from various types of vehicles, converted into greenhouse gas warming potentials, is less than 1%, indicated that CO₂ emissions from vehicle exhaust are still the main source of greenhouse gases. In addition, the greenhouse gas emissions of China VI light-duty gasoline vehicles were closely related to the engine technology, and the emissions from plug-in hybrid vehicles can be reduced by about 23.4% to 27.9%.

Key words： greenhouse gas light-duty vehicle WLTC cycle engine technolog

Received: 06 July 2023

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X511

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	YIN Dai-lin
	AI Li-li
	WENG Yi

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YIN Dai-lin,AI Li-li,WENG Yi. Greenhouse gas emissions characteristics of China VI light-duty gasoline vehicles[J]. CHINA ENVIRONMENTAL SCIENCECE, 2024, 44(2): 679-685.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2024/V44/I2/679

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