...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Environmental Science & Technology >Volatile Properties of Particles Emitted by Compressed Natural Gas and Diesel Buses during Steady-State and Transient Driving Modes
【24h】

Volatile Properties of Particles Emitted by Compressed Natural Gas and Diesel Buses during Steady-State and Transient Driving Modes

机译：稳态和瞬态行驶模式下压缩天然气和柴油客车排放的颗粒的挥发性

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Volatile properties of particle emissions from four compressed natural gas (CNG) and four diesel buses were investigated under steady-state and transient driving modes on a chassis dynamometer. The exhaust was diluted utilizing a faB-flow continuous volume sampling system and passed through a thennodenuder at controlled temperature. Particle number concentration and size distribution were measured with a condensation particle counter and a scanning mobility particle sizer, respectively. We show that while almost all the particles emitted by the CNG buses were in the nanoparticle size range, at least 85% and 98% were removed at 100 and 2S0 ℃, respectively. Closer analysis of the volatility of particles emitted during transient cycles showed that volatilization began at around 40 ℃, with the majority occurring by 80 ℃. Particles produced during hard acceleration from rest exhibited lower volatility than those produced during other times of the cycle. On the basis of our results and the observation of ash deposits on the walls of the tailpipes, we suggest that these nonvolatile particles were composed mostly of ash from lubricating oil Heating the diesel bus emissions to 100 ℃ removed ultrafine particle numbers by 69-82% when a nudeation mode was present and just 18% when it was not
机译：在底盘测功机上，在稳态和瞬态驱动模式下研究了四辆压缩天然气（CNG）和四辆柴油公共汽车的颗粒物排放物的挥发性。利用faB-flow连续体积采样系统稀释废气，并使其在受控温度下通过温度节点。分别用缩合颗粒计数器和扫描迁移率粒度仪测量颗粒数浓度和粒度分布。我们显示，虽然CNG总线发出的几乎所有颗粒都在纳米颗粒尺寸范围内，但分别在100和2S0℃时分别去除了至少85％和98％。仔细分析瞬态循环中散发的颗粒的挥发性，发现挥发开始于40℃左右，大部分发生在80℃。硬加速过程中从静止产生的颗粒的挥发性低于循环其他时间产生的颗粒。根据我们的结果以及对排气管壁上灰烬沉积的观察，我们认为这些非挥发性颗粒主要由润滑油中的灰烬组成。将柴油客车排放物加热到100℃，去除的超细颗粒数量减少了69-82％当存在裸体模式时，只有18％不存在裸体模式

著录项

  • 来源
    《Environmental Science & Technology》 |2012年第1期|p.196-203|共8页
  • 作者

    E. R. Jayaratne; N. K. Meyer; Z. D. Ristovski; L. Morawska;

  • 作者单位

    International Laboratory for Air Quality and Health (ILAQH), Institute of Health and Biomedical Innovation, Queensland University of Technology, GPO Box 2434, Brisbane, Queensland 4001, Australia;

    rnInternational Laboratory for Air Quality and Health (ILAQH), Institute of Health and Biomedical Innovation, Queensland University of Technology, GPO Box 2434, Brisbane, Queensland 4001, Australia Laboratory for Energy Systems Analysis, Paul Scherrer Institute, Villigen 5232, Switzerland;

    rnInternational Laboratory for Air Quality and Health (ILAQH), Institute of Health and Biomedical Innovation, Queensland University of Technology, GPO Box 2434, Brisbane, Queensland 4001, Australia;

    rnInternational Laboratory for Air Quality and Health (ILAQH), Institute of Health and Biomedical Innovation, Queensland University of Technology, GPO Box 2434, Brisbane, Queensland 4001, Australia;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号