城市公交线路调度发车频率优化模型

根据客流需求合理确定发车频率是优化调度方案，实现科学调度的关键工作之一。在分析现有模型的基础上，结合中国城市公交常用的调度模式，建立了以客流需求为基础数据，以乘客满意度和企业满意度加权平均值最大为目标的公交线路发车频率规划模型。介绍了优化模型的构建过程、目标函数与约束条件中各组成要素的计算方法以及模型的解法，阐述了模型所需数据的自动获取和处理方法。实例证明该模型是可行的。     

浅谈城市公共交通规划

城市公共交通规划是城市公共客运交通建设的宏观指导性文件，是城市总体规划、综合交通规划的重要组成部分和必要的深化。通过规划目标及目标函数、线网规划的约束条件、公交线路站点规划、线网优化以及公共客流量分配对城市公共交通进行规划，可以促进国民经济和社会的发展。     

基于CAN总线的汽车检测线网络系统设计改造

针对现有汽车检测线系统复杂的特点,在介绍现场总线技术和检测线结构的基础上。以CAN总线控制器SJA1000作为汽车检测线各单元的核心控制器,提出了基于CAN总线的汽车检测线网络系统设计改造方案。该方案简化了检测线网络系统结构,系统具有模块化、实时性和开放性等特点。实践表明,CAN总线技术在汽车检测线上的应用可以提高车辆的检测速度和质量,降低检测线改造和使用维护成本,具有较大的应用价值。     

Hierarchical control strategies for energy management of connected hybrid electric vehicles in urban roads

This paper presents a fuel efficient control strategy for a group of connected hybrid electric vehicles (HEVs) in urban road conditions. A hierarchical control architecture is proposed in this paper for every HEV, where the higher level and the lower level controller share information with each other and solve two different problems that aim at improving its fuel efficiency. The higher level controller of each HEV is considered to utilize traffic light information, through vehicle to infrastructure (V2I) communication, and state information of the vehicles in its near neighborhood, via vehicle to vehicle (V2V) communication. Apart from that, the higher level controller of each HEV uses the recuperation information from the lower level controller and provides it the optimal velocity profile by solving its problem in a model predictive control framework. Each lower level controller uses adaptive equivalent consumption minimization strategy (ECMS) for following their velocity profiles, obtained from the higher level controller, in a fuel efficient manner. In this paper, the vehicles are modeled in Autonomie software and the simulation results are provided in the paper that shows the effectiveness of the proposed control architecture.     

Use of hybrid vehicles in Japan: An analysis of used car market data

Despite the rapid market penetration of hybrid vehicles (HVs), their usage and contributions to environmental protection have not been examined by vehicle traveling data. In this paper, we analyzed Japan’s used car market data to understand how HVs are used on the street. We find GV drivers with high travel demand switched from GVs to HVs during the transition period. Despite HV owners driving much longer distances than conventional gasoline vehicle (GV) owners, they emit less carbon dioxide (CO₂) emissions, owing to better fuel economy. We also find that HV owners spend roughly the same amount of money annually as GV owners. However, the per-kilometer travel cost of HVs is much lower than that of GVs even if the depreciation cost of the vehicle and vehicle related taxes are included in the analysis.     

客车自燃事故原因分析及对策建议

针对一系列客车自燃事故,结合在客车产品方面的检测经验和结构、工艺、使用、管理方面的了解,分析可能导致客车自燃事故的原因,提出提高客车安全水平、避免自燃事故的若干对策。     

浅议客车密封性试验方法

客车密封性是影响客车舒适性的重要指标，对指导客车车身设计有着重要的意义。这里介绍了客车密封性测试的几种典型方法及特点，阐述了针对不同用途的客车应采用适宜的客车密封性测试方法。     

混合动力商用车电气系统设计

首先介绍一汽混合动力商用车的研发背景、整车概念描述、整车电气系统配置。然后阐述如何进行电气系统设计,其中分为电气系统供电电路设计和控制器通信系统的通信电路设计。最后总结混合动力商用车电气系统设计的要点,并对混合动力商用车进行展望。     

公交客车如何避免火灾的设计思路

分析公交客车上发生火灾的原因，介绍在公交客车设计中如何做到防火、灭火及乘客疏散3个方面的内容。     

LPG城市客车BRT改造及BRT车保障措施可行性分析

对广州市LPG城市客车进行BRT改造的主要内容以及BRT车的保障措施进行可行性分析,为其他城市推广应用BRT车提供参考.