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首页> 外文期刊>Energy Policy >Dazzled by diesel? The impact on carbon dioxide emissions of the shift to diesels in Europe through 2009
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Dazzled by diesel? The impact on carbon dioxide emissions of the shift to diesels in Europe through 2009

机译：柴油使人眼花？乱？到2009年欧洲转向柴油发动机对二氧化碳排放的影响

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摘要

This paper identifies trends in new gasoline and diesel passenger car characteristics in the European Union between 1995 and 2009. By 2009 diesels had captured over 55% of the new vehicle market. While the diesel version of a given car model may have as much as 35% lower fuel use/km and 25% lower CO_2 emissions than its gasoline equivalent, diesel buyers have chosen increasingly large and more powerful cars than the gasoline market. As a result, new diesels bought in 2009 had only 2% lower average CO_2 emissions than new gasoline cars, a smaller advantage than in 1995. A Laspeyres decomposition investigates which factors were important contributors to the observed emission reductions and which factors offset savings in other areas. More than 95% of the reduction in CO_2 emissions per km from new vehicles arose because both diesel and gasoline new vehicle emissions/km fell, and only 5% arose because of the shift from gasoline to diesel technology. Increases in vehicle mass and power for both gasoline and diesel absorbed much of the technological efficiency improvements offered by both technologies. We also observe changes in the gasoline and diesel fleets in eight EU countries and find changes in fuel and emissions intensities consistent with the changes in new vehicles reported. While diesel cars continue to be driven far farther than gasoline cars, we attribute only some of this difference to a "rebound effect". We conclude that while diesel technology has permitted significant fuel savings, the switch from gasoline to diesel in the new vehicle market contributed little itself to the observed reductions in CO_2 emissions from new vehicles.
机译：本文确定了1995年至2009年间欧盟新的汽油和柴油乘用车特性的趋势。到2009年，柴油已占据了新车市场的55％以上。虽然给定汽车模型的柴油版本比同等汽油的燃料每公里可节省多达35％的燃料使用量和25％的CO_2排放，但与汽油市场相比，柴油购买者选择了越来越大和功率更大的汽车。结果，2009年购买的新柴油的平均CO_2排放量仅比新型汽油汽车低2％，比1995年的优势要小。Laspeyres分解研究了哪些因素是观察到的减排的重要因素，哪些因素抵消了其他方面的节省。地区。新车每公里二氧化碳减少量的95％以上是由于柴油和汽油每公里新车排放量均下降了，而只有5％的增加是因为从汽油技术转向了柴油技术。汽油和柴油的车辆质量和功率的增加吸收了这两种技术提供的大部分技术效率改进。我们还观察了八个欧盟国家的汽油和柴油车队的变化，发现燃料和排放强度的变化与报告的新车辆的变化一致。尽管柴油汽车的行驶距离远远超过汽油汽车，但我们仅将此差异归因于“反弹效应”。我们得出的结论是，尽管柴油技术已大大节省了燃料，但在新车市场中从汽油转向柴油的转变对观察到的新车二氧化碳排放量的减少几乎没有贡献。

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  • 来源
    《Energy Policy》 |2013年第3期|3-10|共8页
  • 作者

    Lee Schipper; Lew Fulton;

  • 作者单位

    Precourt Energy Efficiency Center, Stanford University and Project Scientist, Global Metropolitan Studies, UC Berkeley, California, USA;

    NextSTEPS Program, Institute of Transportation Studies, UC Davis, California, USA;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    automobile fuel efficiency; automobile CO_2 emissions; diesel automobiles;

    机译：汽车燃油效率;汽车二氧化碳排放量;柴油汽车;

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