城市公共交通车辆内噪声调查与模糊数学评价

本文以济南市为例，调查了公共交通车辆内噪声随运行路段、时间、车况、路况的变化情况，比较分析表明，发动机是车内主要噪声源，电车和单车内噪声比通道汽车低３ｄＢ－７ｄＢ，一天内噪声变化与市民乘车上下班时间呈正相关，运用模糊数学方法评价得出济南市公共交通车辆内声环境质量为Ⅱ级（７７ｄＢ），并提出了改革车内声环境的对策 。     

城市公共交通车辆内噪声调查与模糊数学评价——以山东省济南市为例

本文以济南市为例，调查了公共交通车辆内噪声随运行路段、时段、车况、路况的变化情况，比较分析表明，发动机是车内主要噪声源，电车和单车内噪声比通道汽车低３ｄＢ～７ｄＢ，一天内噪声变化与市民乘车上下班时间呈正相关。运用模糊数学方法评价得出济南市公共交通车辆内声环境质量为Ⅱ级（７７ｄＢ），并提出了改革车内声环境的对策     

垃圾填埋气(LFG)用作车辆燃料资源化现状及发展前景

介绍垃圾填埋气用作车辆燃料资源化的优点 ,应用中需解决的净化、贮存和发动机改造的关键技术问题及国外研究应用现状 ,指出在我国具有广阔的发展前景。     

广州地铁二号线列车控制系统的设计

从用户的角度，介绍了广州地铁二号线列车控制系统的技术参数，特点及其性能，并对其在一号线列车控制基础上所做的改进进行了说明.     

突破性的运输技术，不妥协的车辆革命以及向氢的快速转变

即使其它方面只是相同或略好一些,只要能使车辆的效率提高到现在的4－8倍,就会有助于许多问题的解决,诸如空气质量、油料使用、陈旧的产业结构,以及能源（特别是电力）供应等大问题,运输生产技术的变革具有成为世界环境与经济发展重要源泉的潜力。革命性的开发已经在主要的汽车制造国家进行。这些技术变革也为其它国家的大踏步发展提供了一次机遇。     

全Pd三效催化剂研究涂层材料的研究

制备了作为Pd三效催化剂涂层材料组成的活性Al2O3/金属氧化物添加剂试样,用BET法、XRD法及H2－TPR法对这些涂层原材料体系进行表征。结果表明：金属氧化物添加剂提高了活性Al2O3的热稳定性;添加ZrO2改善了CeO2的热稳定性;与含Ca的试样不同,含La试样没有贮氧能力。用含有Al2O3-CeO2/ZrO2和Al2O3-La2O3/BaO的涂层材料制备的Pd催化剂有好的CO,HC和NOx同时净化的三效性能和低的起燃活性。加入0．003％（V／V）SO2降低了催化剂活性,含La2O3/BaO涂层材料的Pd催化剂上NOx反应易被SO2中毒。     

PM2.5: global progress in controlling the motor vehicle contribution

It is well established that ambient particles in the size range of 2.5 microns or less case a wide variety of adverse health effects. According to a recent study from the World Health Organization, in 2010 these effects resulted in approximately 3.2million premature deaths with vehicles being one of the significant contributors. Diesel vehicle particulate emissions which are virtually all smaller than 2.5 microns raise additional special concerns due to their carcinogenicity and high ratio of black carbon （BC） to organic carbon; black carbon has recently been found to be the second most important contributor to climate change after carbon dioxide. Other pollutants emitted by diesels and other vehicles such as the oxides of nitrogen and volatile organic compounds also contribute to ambient particulate matter smaller than 2.5 microns in size （PM2.5） after undergoing secondary transformations in the atrno- sphere. Technologies have dramatically reduce vehicle been developed that can emissions when clean, low sulfur fuels are available and these technologies are being phased in throughout the industrialized world resulting in a global decrease in particulate matter （PM） and BC emissions from vehicles. However the vehicle population is growing rapidly in the developing world, leading to increases in emissions in many countries. Unless these rapidly industrializing countries move to state of the art vehicles and clean fuels, global PM, BC and NOx emissions from road vehicles will start to turn up over the next 10 to 15 years.