(EU)No 3/2014附件9照明及信号装置标准简介

正(EU)No 3/2014附件9《照明及信号装置(包括光源自动切换)要求《对L类车辆的照明和光信号的安装进行了全面、系统的规定。特别是对L2e、L5e、L6e和L7e类车的规定,其内容比2009/67/EC更加合理更加科学。但笔者同时认为该标准也存在一些不足。现对L1e类、L3e类、L4e类和L2e、L5e、L6e和L7e     

资讯

欲做纯电动出行"T型车"高度集成的比亚迪e平台11月18日,"定e未来驭简不凡"比亚迪e平台媒体讲解会于北京举办,活动主要是为了讲解比亚迪的e平台技术构成,并且也对电动车行业未来的发展做出了规划。比亚迪e平台凭借着"33111"高集成化系统设计,对于电动车行业发展有着不小的推进,同时也会带给消费者更加安全可靠、更加实用的纯电动车型。     

"上帝"的回声

自悠e125投放市场后,其内在的精良品质和优质的服务为骑士送上一份意外的惊喜,在高兴之余,他们忍不住纷纷表达自已对悠e的喜爱之情。     

汽车制造业供应商(一)

0001 e2e提供优秀企业管理方案 志杰科技集团(e2e Business Solwtion Ltd)简称e2e,旨在将世界上先进的信息技术及企业运作经验与中国企业的具体实际相结合.     

全球最大100家零部件配套企业(四)

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乘员保护(包括内部凸出物和车门适用)要求的研究

正(EU)No.3/2014附件12乘员保护是对L2e、L5e、L6e和L7e类内部安装有安全玻璃、侧门、侧立柱和/或车顶等构成封闭式或半封闭式车厢的车辆的内部凸出物和车门适用的一种特殊要求。该要求于2013年10月24日颁布,于2016年1月1日起执行。该要求是保证乘员(包括驾驶员)安全必不可少的一部分,在     

料浆水分预测模糊控制装置软件设计方法

对料浆水分含量的控制问题,设计了预测模糊控制装置,从监控程序和执行程序两个方面对其软件设计进行了介绍,对监控程序每一部分作了详细的说明,并对求偏差e和偏差变化率△e子程序给出了程序框图。     

比亚迪e5纯电动汽车无法上电故障的检修

一、故障现象有一辆2019年款的比亚迪e5纯电动汽车,正常起动车辆时,仪表显示无法识别到钥匙,对智能钥匙系统进行检修后,再次起动车辆时,车辆系统能识别到钥匙,但是仪表显示无法上电。二、故障分析因为比亚迪e5纯电动汽车有智能钥匙系统,车辆系统无法识别到钥匙,说明该系统存在故障。确认智能钥匙电源正常后,查阅比亚迪e5纯电动汽车维修手册,其智能钥匙控制系统电路如图1所示。     

期待又一个“60万公里无大修”出现 e6纯电动车行程超过50万公里的浮想

<正>比亚迪e6突破50万公里,且还能跑50万公里,让18年前的一汽大众"60万公里无大修"之事,再次浮现,历历在目。4年前的5月,40辆零排放无污染的比亚迪e6纯电动车率先加盟深圳出租车行列,至今已发展为拥有850辆e6的电动出租车队。最早运营的e6电动出租车,单车行驶里程均超过50万公里,第一批中其它e6也将陆续突破50万公里,创造了全球电动车实际行驶里程最长的世界纪录。众所周知,出租车是车主或司机挣钱谋生的工     

昌河北斗星e＋漠河亮相

3月15～16日．昌河汽车在中国的最北端——北极漠河，发布了北斗星e＋新车。据昌河汽车、昌河铃术品牌总监陈平介绍．北斗星e＋主要体现了对A00级高端微轿细分市场的关注。北斗星e＋车型也是昌河汽车加盟中国长安集团之后的开篇之作。     

直喷式柴油机燃烧噪声和活塞拍击噪声的探讨

通过试验方法获取燃烧噪声的传递函数，并测量噪声和缸内压力信号，用时间窗获取包含活塞拍击噪声的燃烧噪声，并与缸内燃烧压力和传递函数计算所得的燃烧噪声进行比较分析，得到了活塞拍击噪声出现的频率范围。对活塞拍击噪声的特性进行了进一步分析。     

带高低挡电动汽车变速装置的设计与开发

多数电动汽车采用固定速比的1挡减速器,存在电机效率低,续驶里程短等问题.基于此,改用2挡变速传动方案,设计了一种新型高低挡变速电动汽车驱动系统.对传动系统的速比进行了优化设计,2挡传动比分别为6.7和10.5;将高低挡位变速器与驱动系统集成于一体.研发了一种体积小、强度高、功能性强且性能稳定的差速器.经实际道路试验,该新型电动汽车能耗降低了6.8％,续驶里程延长了7.2％.     

顶管工程的测量监督及误差校正

通过对沈阳市顶管施工中所发生误差原因的分析 ,结合目前顶管施工中的测量监督及误差校正方法 ,列举了顶管施工中存在的问题并提出建议和整改措施     

类质同象对常见矿物抗压强度的影响

矿物的物理力学性质的,竖化,一是受类质同象的置换,二是受外力的影响,前者如高温可使矿物颜色改变,后者如风化可使矿物结构等受到影响,强度降低.该文通过对矿物各类试验,证实影响矿物物理力学性质变化的因素.     

水泥混凝土路面板厚计算中温度应力系数Bx的数解法

在水泥混凝土路面设计中，水泥混凝土板的温度应力系数Bx是在规范中人工查图确定的，这会带来较大的人为因素的影响，造成设计结果的不唯一性；同时也不便于计算机程序化的实现，提高设计的效率。本文对图形采用回归方法拟合出求解温度应力系数(Bx)的数学方程，并实现了设计的程序化。     

杭州狭长软土基坑支护侧移规律与解析预测方法研究

In order to reduce the influence of deep narrow foundation pit construction on adjacent properties in urban area in Hangzhou, the characteristics of the support wall lateral deflection are analyzed and the corresponding analytical prediction method is proposed. The support wall lateral deflections of the deep narrow foundation pits at Wenyi West Road, Qingchun Station, Qiutao Station, Xingtang Station and Qingnian Station in Hangzhou soft clay are monitored and compared with those of deep foundation pits in Zhejiang and deep narrow foundation pits in Shanghai, Taipei and Singapore. The results show that the maximum support wall lateral deflection of the foundation pit on Wenyi West Road, 0.20%He ~0.25%He, where He is the maximum excavation depth, is close to that in Shanghai(0.15%He~0.41% He), but is smaller than those in Zhejiang, Taipei and Singapore(0.27% He~0.62% He); which is related to the high tangential modulus of Hangzhou soil and small width of the foundation pit. The support wall lateral deflection of the narrow deep foundation pits in Hangzhou can be precisely predicted based on the representative stress strain relationship at site and the modified mobilisable strength design (MMSD) method.     

Self-reported likely behaviour of rail passengers during an emergency evacuation-A case study of Kuala Lumpur,Malaysia

Prior knowledge on how passengers behave during a potential emergency evacuation could be advantageous in designing efficient crowd management and emergency procedures. This study examines the likely behaviours of Malaysian passengers during a potential future emergency evacuation situation. Four key behaviours, i.e., reactive, proactive, cooperative and competitive behaviours, were considered. A questionnaire survey was conducted at one major rail transit terminal in Kuala Lumpur, Malaysia to collect the data. All 301 questionnaire responses displayed non-uniformity in their likely behaviour. Results explained that the passengers are more likely to be proactive (e.g., move to exit immediately as soon as the warning siren is sounded) than reactive (e.g., go to assembly point after being instructed) during the pre-evacuation. Further, people are more likely to be cooperative (e.g., help other people who may have difficulties in getting out) than competitive (e.g., push or shove other peoples to get out quickly) during the evacuation. In terms of demographic influences on behaviours, results demonstrated that there could be significant differences in certain behaviours between males and females and between different age groups. The findings of this study provide valuable information for developing models for simulating passengers' evacuation at rail transit terminals. Further, the managers of emergency response could utilize such data and outcomes in devising effective crowd management strategies and developing appropriate training and educational campaigns.     

Comparison of direct and indirect methods for minimum lap time optimal control problems

Minimum lap time simulations are especially important in the design, optimisation and setup of race vehicles. Such problems usually come in different flavours, e.g. quasi-steady state models vs. full dynamic models and pre-defined (fixed) trajectory problems vs. free trajectory problems. This work is focused on full dynamic models with free trajectory. Practical solution techniques include direct methods (i.e. solution of an nonlinear programming problem problem, widespread approach) and indirect method (i.e. based on Pontryagin's principle, less common, yet quite efficient in some cases). In this contribution the performance of the direct and indirect methods are compared in a number of vehicle-related problems.     

细粒物质变化对风积沙击实特性的影响

受风蚀及风积作用的影响,风积沙中的细粒物质,包括粉粒与黏粒,是最易变化且变化最大的组分。为了研究它们对风积沙击实特性的影响,在风积沙中掺配不同比例的粉粒与黏粒,进行击实试验。试验结果表明,风积沙击实曲线的起点,即含水量为零或接近于零时的击实干密度,主要由级配决定,级配好则击实曲线的起点高,亦即干密度较大。而粉粒与黏粒的含量则决定着击实曲线走势,其中包括是否具有干压实特性。随着粉粒与黏粒含量由低到高,在一个较宽的区间范围内(掺配粉土时为≤40%,掺配黏土时为≤30%),级配的改善使得击实曲线总体上走高,干压实效果仍然比较明显。该试验对风积沙路基干压实工艺在实际工作中的推广与运用是非常有利的。     

电容式混合动力轿车硬件在环试验研究

针对电容式混合动力轿车整车控制器搭建了硬件在环试验平台,并作出了优化,实现了整个平台数据交互的“一线制”。详细论述了硬件在环试验流程,编制了上位机操控界面,配合使用基于CCP的在线标定软件在该硬件在环试验平台上对ISG电机基本助力扭矩MAP图和基本制动扭矩MAP图进行了初步标定,并在该实验台上取得了良好的仿真结果。