In this study,a 14×6JJ a-alloy automobile wheel was used as the object,the fatigue strength and lifetime of the wheel suffered from varying amplitude load were predicted with a cumulative danage theory (the modified Miner theorem),which was considered to be accurate and secure,based on the analysis of load spectrum.The predicted lifetime was verified using a reliability theory.The results showed that,the modified Miner theorem was reliable in the prediction of the lifetime of an automobile a-alloy wheel.

关键词：汽车；合金汽车轮毂；耐疲劳性设计

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Particle emissions of a diesel car fueled with coal to liquids (CTL) on road were tested.The particle number and size distribution were mainly studied.Three typical roads were adopted in this test, including urban arterial roads, secondary roads and freeways.The results show that transient particle number of the car has a corresponding relationship with the vehicle speed.With the speed increasing, the number of both nucleation mode particles and accumulation mode particles increase continuously.With the CTL blend ratio increasing, the number of nucleation mode particles and accumulation mode particles decreases, especially accumulation mode particles whose size are more than 100nm diameter.With the CTL blend ratio increasing, the particle numbers in the three typical roads show downward trends, especially on freeways.It shows that the CTL fuel can distinctly reduce the exhaust particle number of diesel cars on road.

关键词：汽车；柴油车；煤制液体；粒子发射

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This paper presents an Extension theory-based approach to product design,the basic idea is to use combined qualitative and quantitative modeling in Extenics to describe the user's possible product using process as well as the corresponding internal structural,assembly and motion relationships of product, then mark the contradictory problems via the correlation between the magnitudes and characteristics of various elements, and then obtain the design scheme meeting the requirements by extension transformation method.

关键词：汽车；定性和定量建模；扩展变换方法；装配

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This report discusses light-vehicle crash countermeasure profiles and functions for five target pre-crash scenario groups based on vehicle-to-vehicle (V2V) communications. Target pre-crash scenario groups include rear-end, lane change, opposite direction, junction crossing, and left turn across path from opposite direction (LTAP/OD) crashes involving at least one light vehicle (e.g., passenger car, van, minivan, sport utility vehicle, or light pickup truck with a gross vehicle weight rating of 10,000 pounds or less). There are 10 pre-crash scenarios in these groups to be addressed by V2V-based crash countermeasures. Kinematic equations are presented for the time-to-collision and avoidance maneuvers to identify information needs for these crash countermeasures. Information needs are translated into countermeasure functional requirements based on relevant safety applications devised in two prior research projects dealing with cooperative V2V communications and autonomous vehicle-based sensing systems. This report identifies two target pre-crash scenarios that would require new safety applications not developed in prior projects, including the LTAP/OD and opposite direction/no vehicle maneuver pre-crash scenarios.

关键词：汽车；避免撞车；车辆安全；通信系统

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Based on the research of the CAN/LIN bus communication protocol,an automobile lamps diagnostic system based on the CAN/LIN bus is designed.After the completion of the software and hardware designs of CAN nodes,LIN nodes and CAN/LIN nodes,the faults of automobile lamps can be successfully diagnosed.LIN node collects light switches and the gateway controls the car light's status via detecting the data frame on the LIN bus.The design and complementation of CAN node,LIN node and CAN/LIN gateway was finished,which made it possible to detect failures in vehicle.

关键词：汽车；CAN/ LAN总线；故障诊断；汽车灯

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The goal of this work was to develop activity-based learning materials for the introductory transportation engineering course with the purpose of increasing student understanding and concept retention. These materials were to cover intersection operations from a multimodal transportation approach. The initial framework was to create a set of 4 activities, the first activity focused solely on automobile transportation, and the subsequent activities adding one additional transportation mode each. For the final work, the existing sequence of material in the textbook was used for activity development. The final work included the development of a handout for Dr. Kytes critical movement analysis method, a queuing systems field lab, a pedestrian and bicycle level of service lab, and a transit level of service lab. The lab activities provided an active learning experience, two focusing on non-auto modes. These activities facilitated a fundamental and broad understanding of core concepts in transportation engineering. This work has provided me with a better perspective on instruction of this topic and with specific future goals, including better integration of multimodal transportation into the existing curriculum, addressing issues in the textbook, and fine-tuning the work that was previously completed.

关键词：汽车;公路业务;交叉口;交通工程;多式联运运输系统

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Vehicle power train plays an important role to develop the energy efficient and reduce fuel consumption.In this paper,the drive train fuzzy controller structure and the fuzzy logic control strategies of parallel hybrid vehicles is presented.Simulation results illustrate the potential of the proposed controller and control strategy in terms of fuel economy and in keeping the deviations of SOC at a low level.

关键词：汽车；并联式混合动力电动汽车；动力传动系统模糊控制器的结构；模糊逻辑控制策略

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On February 24, 2012, NHTSA released a proposed set of Driver Distraction Guidelines covering original equipment in-vehicle device secondary tasks (where secondary tasks are defined as communications, entertainment, information gathering, and navigation tasks not required to drive) performed by the driver through visual-manual means (meaning the driver looking at a device, manipulating a device-related control with the drivers hand, and watching for visual feedback). These Guidelines will be used to identify secondary tasks that interfere with a driver's ability to safely control a vehicle (National Highway Traffic Safety Administration (NHTSA), 2012). The NHTSA Guidelines specify multiple test methods with acceptance criteria. While including a total of seven test protocols in its Notice of Proposed Federal Guidelines (NHTSA, 2012), NHTSA indicates that it prefers the following two test protocols and their associated acceptance criteria: Option EGDS: Eye Glance Testing Using a Driving Simulator, and Option OCC: Occlusion Testing. Following an approach set forth by the Alliance of Automobile Manufacturers (Alliance) and the growing body of research indicating that eye glance behavior is a prominent indicator of driver distraction, these preferred test protocols focus on eye glance behavior as a method for determining which visual or visual-manual secondary tasks are not acceptable for performance by a driver while operating a vehicle.

关键词：汽车；司机的行为；指引；人因工程；车载信息系统

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前5 个月，物流与生产资料市场运行基本平稳、结构优化。一方面，市场规模增速稳中小幅回落，但保持较快增长；另一方面，在增速回落的同时，市场结构向好转变、流通方式加快转型。
当前市场运行出现积极变化，PMI 指数持续回升，升幅扩大；市场需求回升，供需关系趋向改善，价格回稳；企业原材料补库趋于积极，开工率有所回升；就业形势稳中有升。预计后期经济走势趋稳。但经济回升动力仍需巩固，经济活力仍需加强。

关键词：煤炭；钢材；有色金属；天然橡胶；汽车

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The final report, Evaluation of a Prototype Safer Teen Car, describes the methods, findings, and recommendations by the University of Minnesota on the practicality and benefits of a system that can provide real-time driver feedback to teen drivers. A prototype Safer Teen Car (STC) system was developed and served as the basis for a field evaluation and as a demonstration unit for stakeholder groups. The STC designed for this project was comprised of a number of interrelated subsystems, including: Teen driver identification subsystem; Seat belt detection & enhanced reminder subsystem; Passenger presence subsystem; Speed monitoring & feedback subsystem; Excessive maneuver & feedback subsystem; Cell phone use detection & mitigation subsystem; and Driving context subsystem. The findings generally showed improved safety behavior during when the STC system provided feedback. For example, the reduction in the per-mile rate of excessive maneuvers was statistically significant at night, but not during the day. In general, the results indicated reductions in the rates of speeding, excessive maneuvers, and seat belt nonuse. Overall, the STC was viewed as useful and safety-enhancing, by both teens and parents. Both teens and parents agreed that the STC changed the teens driving behavior. Parents would generally recommend the STC to other parents.

关键词：汽车；青少年司机；安全带；速度监控

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