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昆明是国家节能与新能源汽车示范推广普及试点工程的十三个城市之一,也是西部唯一的试点城市。昆明公交集团作为城市公共交通的骨干企业,坚定不移地贯彻执行国家四部委关于节能减排、建设城市绿色公交、推广新能源公交车的决定,自2009年开始使用新能源公交车。截止到2012年2月,昆明公交集团已投入使用和已购买的新能源公交客车共有400台,车长都为12米。其中4台为纯电动城市客车,其余396台为油电混合动力城市客车,来自全国14个厂家。实践证明,在目前国内纯电动城市客车技术还不成熟的情况下,油电混合动力城市客车是城市公交企业在购置新能源公交车时的最佳选择。为了保障油电混合动力公交的正常运行和稳步推广,昆明公交集团综合修理厂通过制定新能源车辆维护和操作手册、培养技术骨干等手段,积累了经验,取得了良好的效果。 相似文献
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近日,厦门金旅混合动力公交XML6125JHEV38C在第三届中国节能与新能源公交客车创新大赛上一举摘得"技术创新奖"和"最佳车型奖"两项大奖,这也是金旅继2010年和2011年蝉联前两届新能源精英赛冠军后再次获得的重量级大奖。本次大赛以"亮剑自主品牌展示创新技术推进应用发展"为主题,是在新能源汽车(客车)新一轮发展期背景下举行的创新大赛。全国12家客车制造企业携16款新能源公交车同台竞技。经 相似文献
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有关数据表明,相对于传统动力公交车,节能与新能源公交能显著地降低单位运力能耗、减少单位运力排放。以常规混合动力、插电式混合动力、纯电动和燃料电池汽车为代表的节能与新能源客车在综合能效和PM排放等方面表现出独特的优越性,是城市理想的绿色交通工具。 相似文献
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为期三天的2011第十届中国(天津)国际客车及零部件展览会,于3月21日落下帷幕。展会以“低碳客车——让城市更美好”为主题,展会吸引了中、美、德、法等100多家国内外知名企业前来参加,国内三大阵营客车企业全程参与。展会面向公交、旅游市场,推出绿色节能型客车和新能源客车新车型,展示了公交客车领域的节能减排和安全技术、新能源技术以及优秀的零部件。 相似文献
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6月11日,“新能源汽车产品市场供需对接活动”在郑州荥阳举行。本次活动由中国汽车工程学会主办,郑州宇通客车公司协办。来自88个新能源汽车推广示范城市的部分政府主管人员、十余家汽车企业以及几十个城市的公交客运公司等参加了本次会议。 相似文献
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新能源汽车早已是业内的关注热点,客车厂商在研发混合动力客车和纯电动客车上也是不遗余力。在国家财政的大力支持下,尤其是节能与新能源示范推广城市即将增扩为20个,新能源汽车自然市场前景"一片美好"。但在近期,节能与新能源示范推广城市——昆明在批量投放混合动力公交车前,却先批量投入LNG公交车。 相似文献
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Pedestrians as compared to vehicular traffic enjoy a high degree freedom of movement even in heavily congested areas. Consequently, there are more alternative links available to pedestrians between a given origin‐destination (O‐D) pair. This paper describes a study done by the University of Calgary to evaluate the factors affecting the choice of route on intra‐CBD trips or trips within the Central Business District (CBD). An origin destination survey conducted in downtown Calgary, Alberta enabled the identification of the most significant factors influencing the choice. These factors were analyzed in relation to the physical characteristics of the location, personal characteristics of the trip maker and the type of the trip. It appears that most people chose the shortest link and factors such as the level of congestion, safety or visual attractions were only secondary. This suggests that the length should be made a major consideration when planning and designing pedestrian links. 相似文献
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本文阐述了混合动力列车的技术特点及其相应优势与劣势,同时介绍了其在国内外的研究动向,并对其应用前景进行了展望。尽管该类新型铁道车辆的续航能力、电池寿命以及成本等相关问题目前仍有待改善,但以其对城市环境的美化作用与优越的舒适驾乘性能,以及高效节能、绿色环保的显著优势,依然不失为一类充满前景的新型轨道交通运输方式。 相似文献
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明确埋地管道防腐保温层的技术评价标准,对埋地钢质管道的安全运行,延长管道使用寿命具有重要意义。为了对埋地管道防腐保温层做出有效评价,从间接检测与开挖检测2个方面,结合现场检测数据,提出了基于防腐保温层的电流衰减率、绝缘电阻率、质量状况与厚度的分级评价标准及基于4种评价指标的综合评判方法。工程实践表明,该评价标准对防腐保温层是否存在失效能做出有效判断。 相似文献
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This paper estimates the efficiencies and productivity changes of 12 international airports in the Asia-Pacific region based on data from 1998 to 2006. We apply stochastic frontier analysis (SFA) to compute efficiency estimates and use the Malmquist productivity index (MPI) to analyze productivity changes. We use the SFA model with a translog-type production function after testing the statistical hypotheses. According to the results of the SFA hypothesis tests, airports have experienced a technological regression; the deviations from the efficiency frontier are caused more by technical inefficiency than random noise. However, the inefficiency was found to decrease. The MPI reveals a declining trend resulting more from technological change than from efficiency change, with a decrease in inefficiency. Taken together, both the hypothesis tests and the MPI not only provide consistent conclusions, but also suggest that airports should concentrate on technological progress. 相似文献
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In India pedestrians usually cross the road at mid-block crosswalks due to ease of access to their destination or the development of adjacent land use types such as shopping, business areas, school and residential areas. The behaviour of pedestrian will change with respect to different land use type and this change in behaviour of pedestrian further reflects change in perceived level of service (LOS). So, it is important to evaluate the quality of service of such crossing facilities with respect to different land-use type under mixed traffic conditions. In this framework, pedestrian perceived LOS were collected with respect to different land-use type such as shopping, residential and business areas. The ordered probit (OP) model was developed by using NLOGIT software package, with number of vehicles encountered, road crossing difficulty as well as safety considered as primary factors along with pedestrian individual factors (gender and age), land-use type and roadway geometry. From the model results, it has been concluded that perceived safety, crossing difficulty, land-use condition, number of vehicles encountered, median width and number of lanes have significant effect on pedestrian perceived LOS at unprotected (un-signalized) mid-block crosswalks in mixed traffic scenario. The inferences of these results highlights the importance of land use planning in designing a new set of pedestrian access facilities for unprotected mid-block crosswalks under mixed traffic conditions. Also the study results would be useful for evaluating pedestrian accessibility taking into account different land-use type and planning required degree of segregation with vehicular movement at unprotected mid-block crosswalk locations. 相似文献