Analysis on Energy Saving and Emission Reduction of Electric Vehicles Based upon Life-Cycle Energy Efficiency
Analysis on Energy Saving and Emission Reduction of Electric Vehicles Based upon Life-Cycle Energy Efficiency
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发表时间：
2012
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通讯作者：
Kong Wei-zheng
中科院分区：
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作者：
Kong Wei-zheng
基于全循环能效理论，计算了电动汽车替代传统燃油汽车后的化石能源消耗、二氧化碳和污染物排放的变化，结果表明，电动汽车替代汽油汽车后，一次能源消耗、CO2、CO和HC排放量降低，但NOx和SO2排放量增加;电动汽车替代柴油汽车后，除SO2外的污染物排放量将减少，但CO2和SO2的排放总量将增加，考虑到我国燃煤发电占总发电量的比例，电动汽车替代燃油汽车并不能彻底实现节能减排的目标。
The variation of fossil energy consumption,carbon dioxide and pollutant emissions are calculated after conventional fuel vehicles are replaced with electric vehicles based upon the full-cycle energy efficiency theory.The results show that the primary energy consumption,CO2,CO and HC emissions can be reduced with the substitution of electric vehicles for petrol vehicles,but NOx and SO2 emissions are increased.When diesel vehicles are replaced with electric ones,the emissions of pollutants except SO2 will be reduced,but the total emissions of CO2 and SO2 will be increased.Considering the proportion of coal-fired power generation to the total power generation in China,the target of energy saving and emission reduction cannot be thoroughly realized by the substitution of electric vehicles for oil-fired vehicles.