专用汽车轻量化设计探讨

汽车轻量化对节能减排起着至关重要的作用。汽车质量的减轻主要归功于铝合金、镁合金塑料、高强度合金钢等新材料用量的增加。介绍了专用汽车轻量化设计的重要性,并结合轻量化材料的发展现状探讨了各种新材料在汽车轻量化设计中的应用,提出了现阶段提高我国专用汽车轻量化设计的思路和建议。     

国内专用车市场新亮点

随着我国社会经济和交通环境的改善，各行业对专用汽车尤其是重型专用汽车的需求越来越大。据专家预测，我国重型专用汽车年需求量将占重型车需求量的50％以上，以年均15％的速度递增。随着国家扩大内需加大基础设施建设政策的实施，重型自卸车需求量越来越大，已占整个重型车需求的30％以上；我国公路总体布局将建成五纵七横路网及9条集装箱货运通道，     

东风随州专用汽车专攻天下

随州这座出土编钟的文化古城，以曾侯乙墓遗址出土的“鹿鹤”青铜器为市标，如今这座城市已成为国内“专用汽车之都”。东风随州专用汽车有限公司（下文简称“东风随专”）即坐落在这里。     

铁岭被授予“中国专用车生产基地”称号

9月24日，在2011第二届中国（铁岭）专用车博览会开幕仪式上，中国汽车工业协会熊传林副秘书长代表中国汽车工业协会向铁岭市人民政府授予“中国专用汽车生产基地”称号并讲话。熊传林副秘书长指出：“铁岭市抓住机遇，     

于永成由市场来说话

于永成,吉林工业大学汽车系毕业,高级工程师.曾任中国道路运输协会专家委员会副主任和客、货运工作委员会专职副主任,主持交通部及国家多项重大攻关项目研究,获交通部多项科技进步奖,与人合著<专用汽车>、<物流技术用语>等专著,为<中国公路水运交通五十年>、<市场经济百科全书>、<交通工程手册>主要撰稿人.现任北京中交协物流研究院交通发展研究部主任、中国物流学会理事.     

全新梅赛德斯-奔驰ACTROS亮相中国

享誉全球的世界头号商用汽车制造商戴姆勒·克莱斯勒参加了2003年9月23-26日在华中经济重镇武汉举行的第四届中国武汉国际商用、专用汽车展览会.其全新梅赛德斯奔驰Actros系列载重车首次亮相中国市场,包括Actros3340S牵引车和Actros4140B混凝土搅拌车,另外一款Axor1840LS牵引车也首次在武汉亮相.     

BICES 2013北京预热

8月16日,中国(北京)国际工程机械、建材机械及矿山机械展览与技术交流会(BICES)主办方宣布,BICES 2013将于2013年10月15日至18日在北京九华国际会展中心举办。同期还将举办IVEX 2013第二届中国·北京国际商用车博览会,以及中国国际应急抢险救援装备展。主办方预测,BICES 2013展会展览面积将突破23万平方米,招募超过1500家各国参展商,同时在为期4天的展会期间,展品范围将涵盖工程机械、建材机械、矿山机械、专用汽车和特种改装车,以及大型抢险救援设备和抢险工程机械等领域。开启·新篇章自2011年底,工程机械行业呈现发展速度明显减缓的态势,而随之产     

现场签198台!这家车企实力不容小觑

正9月28日,华菱星马汽车集团专用车系列产品推介会在随州举行。随州市汽车办主任李西平、华菱星马汽车集团董事长刘汉如及公司相关领导以及来自随州地区共680余位新老客户、专用车企业代表、专用车经销商齐聚一堂,共同品鉴华菱星马专用车带来的价值盛宴。全系列专用车新品集中亮相在有着"中国专用汽车之都"美誉的随州举行如此声势浩大的推介会,华菱星马做足了准备:不仅带来了泵车、搅拌车、散装车、随车起重运输车、牵引车、五轴专用车底盘、     

我国综合运输发展的适应性分析

本文回顾了"十一五"时期我国综合运输发展状况,总结了取得的进展和存在的问题,对比这一时期我国经济与社会发展各方面的要求,分析了我国综合运输发展的适应性。     

破解多式联运困局 推动综合运输发展的对策

本文首先辨析了多式联运的内涵,对多式联运进行了界定,然后分析了我国多式联运快速发展的主要条件,结合我国多式联运发展的现状和条件,提出了促进我国综合运输发展的政策建议。     

New energy vehicle in China for sustainable development: Analysis of success factors and strategic implications

The purpose of this study is to understand the effects of the influential factors that affect the sustainable development of new energy vehicle in China, investigate the cause-effect relationships among them, and propose some appropriate policies and efficacious measures for the policy-makers to promote its sustainable development. Interpretative Structuring Modeling was used to identify the critical factors affecting the sustainability of China’s new energy vehicle industry and to find the potential relationships among the factors; subsequently, fuzzy Decision Making Trial and Evaluation Laboratory was employed to investigate the cause-effect relationships among the influential factors and to prioritize these factors. The results reveal that technological maturity, technological standards for new energy vehicles, and funds on R&D of new energy vehicles are the three most important driving factors for promoting the sustainable development of new energy vehicle industry of China. Some implications were also proposed for China’s authority. The success factors and strategic implications of new energy vehicles in China were investigated in a multi-criteria analysis approach.     

货运车型标准化专项治理管理系统设计与实现

货运车型标准化是国家运输行业结构调整及货运行业提质增效发展的重要工作手段与目标。从货运车型标准化转型治理工作的功能需求出发,以正在开展的常压液体危险货物罐车治理工作为基础,本文设计并实现了基于SSM架构的货运车型标准化专项治理管理系统。危险货物道路运输企业在系统中申报罐车信息,罐车检验机构基于车辆识别代码上传罐检报告,道路运输管理机构通过对罐车信息及关键报告进行审核,给予审核结果及意见。     

Investigation of tailpipe and evaporative emissions from China IV and Tier 2 passenger vehicles with different gasolines

The limited understanding of vehicular emissions in China, especially evaporative emissions, is one obstacle to establishing tighter standards. To evaluate tailpipe and evaporative emissions, two typical China IV vehicles and one Tier 2 vehicle with an onboard refuelling vapour recovery (ORVR) system were selected and tested. One of the China IV vehicles was fuelled with gasoline, E10 and M15, respectively, to investigate the effect of fuel properties on vehicular emissions. For each vehicle, cold-start tailpipe emission tests were conducted first, followed by an evaporation test. Based on the emission factors and real-world vehicle activity data, the annual tailpipe and evaporative hydrocarbon (HC) emissions of each vehicle were calculated and compared. The results show that E10 and M15 significantly reduced the tailpipe CO and particle number (PN) emissions but seriously aggravated the NOx emissions, especially for M15. The hot soak losses (HSLs) and diurnal breathing losses (DBLs) were slightly impacted by the fuel properties. The annual evaporative emissions with E10 and M15 were higher than that with gasoline. The ORVR system effectively controlled the evaporative emissions, especially for DBLs. Evaporative emissions from the China IV vehicles were 1.1–1.4 times the tailpipe HC emissions. Additionally, the evaporative emission factors of the China IV vehicles were almost 50% lower than the standard (2.0 g/test), whereas their annual evaporative emissions were almost 1.8–2.8 times higher than those from the Tier 2 vehicle. Therefore, controlling evaporative emissions currently remains a great need in China, and the ORVR might be a recommended evaporative control technology.     

Differences in single heavy vehicle crashes at intersections and midblocks

The objective of this research is to identify the factors differentiating between single heavy vehicle collisions at intersections and midblocks by using a binary logit model. Our results show that single vehicle crashes involving heavy vehicle at intersections are more likely to occur on main roads and highways, whereas crashes at midblocks are more likely to occur on divided two‐way roads, roads with special facilities or features (e.g. bridge) and roads with a higher percentage of heavy vehicle traffic. Intersection crashes are also more likely to involve vehicles that are turning left or right, resulting in angle crashes and vehicle overturn, whereas midblock crashes are more likely to involve vehicles on higher posted speed roads. Copyright © 2017 John Wiley & Sons, Ltd.     

液化天然气(LNG)汽车日常检查方法及维护技术综述

天然气是一种优质的替代燃料,具有污染小、安全系数高、运行费用低等优点。天然气已经成为城市公共交通领域应用最为成功和广泛的车辆替代燃料技术,为推动交通运输行业的节能减排做出了显著的贡献。液化天然气汽车,作为天然气汽车的一种类型,与传统汽柴油车相比,液化天然气汽车安装了包括液化天然气气瓶、气管路及各种控制阀门和仪表在内的专用装置,在对液化天然气汽车进行日常检查时需要针对液化天然气汽车的专用装置进行重点检查。本文则针对液化天然气汽车的特点,对液化天然气汽车的正确使用方法、日常检查方法及维护技术要求、以及相关注意事项三个方面进行了解读,为指导液化天然气汽车进行日常检查与定期维护提供了技术参考。     

大型铁路客运枢纽换乘服务研究

站在运输服务设计的角度,以增强旅客换乘出行体验为目的,提出“人、行李分离”的换乘服务理念,并基于该服务理念设计铁路客运枢纽内同站和异站换乘的方案。异站换乘方案设计时,提出铁路专用车的概念,打造一种全新的换乘模式,满足旅客换乘出行的多元化需求,吸引旅客主动换乘。最后,从心理和生理舒适性两个角度对换乘服务理念进行评价,结果表明“人、行李分离”服务创造了旅客换乘出行附加价值,提高了旅客的换乘出行体验感。     

Impact of license plate restriction policy on emission reduction in Hangzhou using a bottom-up approach

Many emission models have been developed for estimating the impact of transport policies on vehicle emissions. Macroscopic models, such as MOBILE and COPERT, are used for area analysis, while microscopic models, such as CMEM, are applied for corridor analysis. It is well known that driving dynamics are critical for estimating vehicle emissions. MOVES can be used for both macroscopic and microscopic emission analysis, and its advantage lies in the consideration of driving dynamics. Using a bottom-up approach, we study the impact of license plate restriction policy on vehicle emission reduction by localizing the emission rates in MOVES according to the vehicle emission standards in China. We implement the approach to evaluate the impact on the total vehicle emissions in Hangzhou, China before and after the implementation of license plate restriction policy. In the restricted region, the reductions of total Vehicle Kilometer Traveled (VKT) and total emissions are 9.6% and 6.9%, respectively. The result shows that the license plate restriction policy is effective in achieving the targeted emission reduction.     

Applying activity-travel data for the assessment of vehicle exhaust emissions: Application of a GPS-enhanced data collection tool

This paper describes the development of a global positioning system, enhanced data collection tool for the assessment of vehicle exhaust emissions. This involves the collection of activity and travel data on a personal digital assistant with built-in global positioning system receiver. By converting the second-by-second global positioning system based travel data into emissions, estimates are made of the exhausts produced by individual vehicle trips. Differences in travel behaviour and vehicle emissions were examined by gender and trip purpose.     

The transition to electric bikes in China: history and key reasons for rapid growth

Annual electric bike (e-bike) sales in China grew from 40,000 in 1998 to 10 million in 2005. This rapid transition from human-powered bicycles, buses and gasoline-powered scooters to an all-electric vehicle/fuel technology system is special in the evolution of transportation technology and, thus far, unique to China. We examine how and why e-bikes developed so quickly in China with particular focus on the key technical, economic, and political factors involved. This case study provides important insights to policy makers in China and abroad on how timely regulatory policy can change the purchase choice of millions and create a new mode of transportation. These lessons are especially important to China as it embarks on a large-scale transition to personal vehicles, but also to other countries seeking more sustainable forms of transportation.