手动挡换挡提醒系统的开发和应用研究

文章针对驾驶习惯不良的驾驶员或新手驾驶员,在驾驶手动挡车型时由于换挡时机把握不准而造成的油耗高问题,开发了一套换挡提醒装置,并进行了装车测试。结果证明:驾驶员按照换挡提醒系统的指导操作,对车辆具有一定的节油效果。     

节油驾驶操作

汽车节油的潜力大小是由发动机节油的潜力大小、底盘节油的潜力大小以及驾驶技术的熟练应用的程度而决定的。节油驾驶操作是汽车节油的重要方面。据统计,驾驶技术的优劣可使油耗相差达20%左右。文章总结了选好驾驶员,正确使用车辆,提高操作技术,改变驾驶方法等主要做法及取得的主要成果。     

欧曼超能版再获冠军 这次拿的什么奖

<正>11月25日,"第八届中国国际卡车节油大赛"颁奖典礼在京举行。福田戴姆勒汽车携欧曼GTL超能版460马力牵引车及310马力载货车产品参赛,凭借领先的节油技术优势,分别斩获牵引车组与载货车组节油冠军。同时,欧曼GTL超能版460马力牵引车凭借高效节油获得了"物流快递满意车型奖",树立重卡行业在节油与客户满意度的新标杆。技术节油硬实力冠军品质续传奇本次节油大赛上,欧曼GTL超能版凭借康明斯全新一代ISG发动机和戴姆勒领先的整车匹配技术带来全新的节油技术突     

节油技术整车对比检测方法的应用

对汽车节油技术的检测主要分为发动机性能台架对比试验和整车性能道路对比试验两大类别,文章采用整车性能道路对比试验,使用流量计检测内燃机采用节油技术前后的燃油消耗量,来评定内燃机在运用了节油技术或产品后的节油效果,适用于车辆和柴油发电机组等内燃机的应用产品。     

汽车节油技术的检测与评定

对汽车节油技术的检测一般采用发动机或整车对比检测的方法,仅仅凭借一些普通的计量器具是无法准确检测出车辆各项性能的实际状况,必须采用高精度的测试仪器,并严格控制试验时的环境条件,方能检测出汽车节油技术的真实效果。     

在用内燃机械燃油计量的探索

文章探讨了在用内燃机械的燃油计量问题,提出了开展节约燃油管理工作燃油计量是基础,对于内燃机械的使用企业或单位,在希望燃油发动机自身节油技术更加先进的同时,从计量、统计、考核和评比等管理层面入手,采取各项节油管理的措施是目前成本最低、最可行的方法。     

佳通轮胎节能环保旋风舞动深圳物博会

10月12日,第二届中国(深圳)国际物流与交通运输博览会在深圳会展中心开幕。作为节油轮胎市场的创新者和领先者,佳通轮胎率先支持"广东绿色货运示范项目",并以"更节油、更耐用、可翻新"为主题参展,推出最新的节油环保技术和产品,并赢得了展会组委会颁发的"品牌企业奖"称号。     

道路运输 节能减排路有多远？ 行动篇——苏汽以“油耗统计考核”促节能减排

道路运输企业节能减排涵盖范围甚广，工作的着力点还是在管理上，管理的重点既包括严格执行车辆燃料耗量限值标准，也包括车辆行驶路线的科学选择；既包括加大市场营销力度提高车辆实载率，也包括对司机节油技术的增训.     

第六届北京国际商用车展第二届中国客车节油大赛新闻通报会

2007年1月31日,六届北京国际商用车展组委会召开第六届北京国际商用车展、第二届中国客车节油大赛新闻通报会.第三届中国国际客车大赛、第二届中国客车节油大赛协办单位:米其林(中国)投资有限公司、一汽无锡柴油机厂,支持单位:GM艾里逊变速箱部(中国区域)、泰乐玛汽车制动系统(上海)有限公司、劲达技术(河源)有限公司参加会议.     

习惯带来节油的收益

燃油价格的上涨,让运输企业的利润空间被逐渐的压缩.在各个汽车厂家纷纷推出节油技术的基础上,运输公司也进行各种各样培训与鼓励措施.鼓励司机节约燃油.     

Analysis of factors affecting the choice of route of pedestrians

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.     

Non-parametric analyses of efficiency of airports

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.     

波纹管应力分析研究进展

评述了波纹管应力理论研究方法的进展情况，围绕解析法、工程近似法和数值法，对波纹管理论研究中的一些主要成果作了较详细的回顾和总结，对各种研究方法作出了评价，展望了亟待解决的一些问题。     

注汽管道承压能力评估和实物试验验证

基于失效评估图技术对某注汽管道进行了承压能力评价,给出了管线在不同腐蚀壁厚情况下的极限承压能力和极限裂纹尺寸。并利用实物爆破试验验证了评价方法的安全性和有效性,通过对爆破断口进行宏观和微观分析,发现管段的开裂属于脆性开裂。     

实现多组态计量软件集中监控的可行性分析

天然气自动计量系统有多种组态软件,由于软件的不相通性,造成了计量系统数据采集的通用性差、数据传输与入库的时效性差、数据利用的可靠性低.结合各组态软件的实际情况,从设计上充分利用Oracle大数据处理能力以及Partition(分区表)的特性,实现历史数据的存储,应用WebService与COM+数据访问组件提供多层数据访问架构,采用OPC与DDE工业数据交换协议,实现了各站场计量数据的实时上传,为连续数据采集和实时监控提供了可能,节约了改造成本.     

埋地管道防腐保温层失效评价

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。     

城市轨道交通杂散电流监测系统概述

介绍了城市轨道交通工程中杂散电流不同的监测系统的构成,分析了集中式、分散式和智能型等监测系统的配置和功能,以及智能型实时在线监测系统的重要意义,为轨道交通工程杂散电流监测系统的选择与应用提供参考。     

Preliminary results of an analysis of areas of influence in Shanghai

The main deficiency of most current modeling approaches to transportation can be identified as neglect of the integration of existing geographical knowledge in regard to the ex ante transport/land use modeling approaches, with its focus on territorial dynamics and theory development. This paper addresses this aspect of the problem by introducing a theoretical and methodological framework for the analysis of the interrelationship between land uses. The analysis attempts to determine to what extent the functional land use in a city can be considered an ordered pattern. The order sought does not rely on purely spatial configurations, but on the correlation of transportation and land use. The first section of this paper focuses on theoretical considerations. It stresses the fact that conventional approaches do not apply in the present context. It then suggests an alternative based on areas of influence and measured in terms of level of attractance of land uses. The second describes a procedure based on this alternative following the remarkable contribution of Hanjoul, Beguin and Thill. An application of this procedure to the analysis of Shanghai is then examined. Finally, an evaluation of the strategies for optimizing the interrelationship between land uses is presented. The paper concludes with a possible research agenda.     

输油管道中原油乳状液的流变性研究

原油乳状液的流变性是原油开采后在管道中输送的重要研究方面,为了更好地研究这一性质,采用电动搅拌机、偏光显微镜以及流变仪等仪器来测定不同含水率的原油乳状液在不同条件下的黏度,观测不同含水率的原油乳状液在偏光显微镜下的形态。并且分别对原油乳状液的黏度与含水率之间的关系以及与剪切速率之间的关系进行研究,初步确定了所测区块原油乳状液的转相点以及该区块原油乳状液的流变特性,为生产中的油气集输提供了理论依据。     

Direct analysis of the perceived importance of attributes of reliability of travel modes in urban travel

Reliability of travel modes was found to be the most important characteristic of transportation systems in several attitudinal investigations of individual travel behavior. This paper represents the first part of a research effort aimed at gaining a better understanding of the characteristics of reliability of transportation modes in urban travel. In this research, reliability characteristics are identified; their importance relative to each other is assessed, and an insight into possible structure of an objective reliability index is discussed. The research is based on perceived values of reliability, which were identified through a large attitudinal survey conducted in the Chicago metropolitan area.