中国乘用车轻量化水平发展趋势研究

Research on Development Trends of Lightweight Level of Passenger Cars in China

采集了2010~2020年中国市场销售的约1.5万个燃油乘用车和电动乘用车样本,采用整车轻量化系数作为乘用车轻量化水平评价指标,对其不同类型、级别和车系的整车轻量化水平变化趋势和现状进行了研究。结果表明,近10年各类燃油乘用车的整车轻量化系数持续下降,降幅约30%,行业整体轻量化水平不断提高,但提高的幅度趋缓。自主品牌燃油乘用车的整车轻量化水平与其他车系仍有一定的差距。电动乘用车的整车轻量化系数呈下降趋势,轻量化水平不断提高,但其与燃油乘用车的轻量化特征存在较大差异。

The sample data of 15000 internal combustion engine vehicles(ICEVs)and electric vehicles(BEVs)sold in the Chinese market from 2010 to 2020 were collected,the lightweight index was adopted to evaluate the lightweight level of the passenger cars,and the status and trends of vehicle lightweight level were studied.The results show that in the past ten years,the lightweight index of ICEVs has continued to decline and has decreased by about 30%.The overall lightweight level of the industry has continued to increase but the rise has slowed down.There is still a certain gap in the lightweight level of ICEVs between the self-owned brands and other brands.For BEVs,the lightweight index has also decreased and the lightweight level continues to increase.However,there is a noticeable difference in the lightweight level between BEVs and ICEVs.