...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Scientific Research and Reports >Evaluation of the Impact of Motorcycles in Urban Transport on Air Pollution: A Case of Douala City in Cameroon
【24h】

Evaluation of the Impact of Motorcycles in Urban Transport on Air Pollution: A Case of Douala City in Cameroon

机译：城市交通中摩托车对空气污染的影响评估：以喀麦隆杜阿拉市为例

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Aims: This work aimed to evaluate the impact of motorcycle taxis on air pollution for the particular case of Douala city in Cameroon. Study Design: Samples were collected from motorcycle drivers and an exhaust gas analyser was used for better understanding of this area of ??activity. It was done to obtain the different amounts of pollutants emitted by these motorcycles in different traffic situations. Place and Duration of Study: Douala Urban Community, National Advanced School of Public Works, and Energy, Water and Environment Laboratory of National Advanced School of Engineering (University of Yaounde I) between February 2017 and June 2018. Methodology: The statistical data concerning the motorcycles in circulation, estimated around 233,799, in the transport sector between 2009 and 2013 in Cameroon, were used for the present study. Using these data, the correlation of the evolution of motorcycles in circulation in the transport sector was established. For motorcycles exhausts, atmospheric pollutants namely, carbon dioxide (CO2), carbon monoxide (CO), nitrogen oxide (NOx) and hydrocarbon (HC) were measured. Results: A survey of 500 motorcycle taxis, revealed that 58% of motorcycles were acquired prior to release, 56% was less than 5 years old and 95% consumed gasoline. The survey also revealed that 64% of motorcycles operating in urban transport had a tax power of between 6 and 7 HP. The different amounts of pollutants, emitted on a sample of 45 motorcycle taxis, followed that in slow traffic in urban areas (5?km/h), CO (depending on their aging condition) was emitted between 0.40 and 3.02?g/kg; the Euro 3 standard on motorcycle emissions recommends a limit of 1 g/kg. In the same traffic situation, maximum values ??for HC and NOx, were 0.62?g/kg and 3.10×10sup?3/sup g/kg, respectively; values ??were within the limits set by the same standard, namely 0.8 g/kg and 0.15 g/kg respectively. The statistics available between 2007 and 2011 revealed an almost linear evolution of the "motorcycle" phenomenon in urban centers in Cameroon, making it possible to put 647,000 motorcycles into circulation between 2007 and 2018. Conclusion: Traffic situation, aging of the motorcycles and nature of the fuel revealed their influence on the emissions of pollutants by motorcycle taxis. These results are a useful tool to monitor the air pollution levels caused by motorcycles in urban transport.
机译：目的：这项工作旨在针对喀麦隆杜阿拉市的特殊情况，评估摩托车出租车对空气污染的影响。研究设计：从摩托车驾驶员处收集样品，并使用废气分析仪更好地了解这一活动区域。这样做是为了获得这些摩托车在不同交通状况下排放的不同数量的污染物。研究的地点和持续时间：2017年2月至2018年6月之间的杜阿拉城市社区，国家公共工程高级学院和国家工程高级学院（雅温得第一大学）的能源，水与环境实验室。本研究使用了在2009年至2013年间喀麦隆交通领域的流通中摩托车，估计约233,799辆。利用这些数据，建立了交通部门中流通摩托车的发展趋势的相关性。对于摩托车尾气，测量了大气污染物，即二氧化碳（CO2），一氧化碳（CO），氮氧化物（NOx）和碳氢化合物（HC）。结果：对500辆摩托车的出租车进行的一项调查显示，有58％的摩托车是在放行之前购置的，有56％的摩托车不到5年使用，有95％的汽油消耗。调查还显示，在城市交通中行驶的摩托车中，有64％的征税能力为6至7马力。在45辆摩托车出租车的样本中，污染物的排放量不同，其次是在城市交通缓慢（5？km / h）时，CO（取决于其老化状况）的排放量在0.40至3.02？g / kg之间。欧盟3排放标准建议限制为1 g / kg。在相同的交通状况下，HC和NOx的最大值分别为0.62？g / kg和3.10×10 ？3 g / kg;值在同一标准设定的范围内，分别为0.8g / kg和0.15g / kg。 2007年至2011年之间的可用统计数据显示，喀麦隆市中心的“摩托车”现象几乎呈线性演变，这使得2007年至2018年之间有647,000辆摩托车流通成为可能。结论：交通状况，摩托车的老化和自然环境燃料揭示了它们对摩托车出租车污染物排放的影响。这些结果是监测城市交通中摩托车造成的空气污染水平的有用工具。

著录项

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