The risk of motor vehicle crashes (MVCs) associated with on-the-job operation of motor vehicles or exposure to road traffic hazards affects millions of workers in the United States, and this risk cuts across all industries and occupations. MVCs are consistently the leading cause of worker fatalities, affecting workers who drive all types of motor vehicles during their work day . passenger cars, heavy trucks, fire apparatus, and many others. A wide variety of interventions may be applied to prevent work-related MVCs: administrative controls such as seat belt policies, distracted-driving policies, pre-trip vehicle checks, driver training, reduced travel, and fatigue management; and engineering controls such as more crashworthy vehicles, advanced driver assistance systems, or active safety systems. Questions remain as to which are the most effective interventions to protect workers from risks of work-related MVCs. Through strategic planning, research, collaborations with stakeholders, and communication of research results and prevention, the National Institute for Occupational Safety and Health (NIOSH) is working to ensure that recommended solutions to prevent work-related MVCs and resulting injuries are based on sound research and are clearly communicated to employers and workers. The NIOSH Center for Motor Vehicle Safety (CMVS) is the focal point for activities within the Institute that address this pressing occupational safety problem. The CMVS was designated in December 2010 to strengthen and sustain the Institute's research and prevention activities to reduce work-related motor vehicle crashes and resulting injuries. It is a 'virtual' Center through which researchers from across the Institute and external partners from government, non-governmental organizations (NGOs), academia, labor, and industry bring complementary expertise to identify crash risk factors, develop and evaluate workplace interventions to prevent crashes, and communicate the results to employers and other stakeholders. The NIOSH CMVS is guided by the vision that: All workers who are exposed to hazards of motor vehicle traffic while working have the highest possible levels of protection from the risk of motor vehicle crashes and resulting injuries. The primary purpose of the 5-year strategic plan for the NIOSH CMVS is to define the priority areas for research and prevention initiatives through 2018.

关键词：汽车；机动车安全；战略预防

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The performance of the aluminum alloy makes it the most popular lightweight materials for the automobile manufacturers.However,due to the disparity on the crystal structure,it has the higher springback values compared with steel.In order to solve the problem,we put forward a new springback compensation method based on displacement compensation principle and the principle of curved surface fairing design methods.Though full cycle simulation and calculate springback value for each working procedure,then generate the springback compensation surface.The method's practical application effect is good.

关键词：汽车；铝合金车身；回弹补偿

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The dimention for muffler has great impact on the car engine.Based on software GAMBIT,GT-POWER,SYSNOISE,through comprehensively using finite element and boundary element method,simulating and analyzing the acoustic performance for the basic noise reduction unit,establishing the finite element model,comparing the frequency and noise reduction of different volume ratio of cavity and throat tube.Simulation analysis and experimental results show that the resonant structure parameters have a direct effect on its resonant frequency and noise reduction amount,the relationship characteristic between them is that the ratio more bigger,the requency and noise reduction amount more bigger,too.And draw the two relation formulas through calculation.

关键词：汽车；消声器；声学

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An automobile power-train active mount system with a piezoelectric stack actuator is introduced.The influence caused by power-train to the body of the car is analyzed by means of parameter self-tuning fuzzy PID control,on which the simulating results are based.It turns out that this control scheme can restrain the influence better caused by power-train to the body of the car.

关键词：汽车；发动机；模糊控制

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Compressed natural gas (CNG) automobile is an emerging new energy car.How to control gas injection is the key technology of CNG electronic control system.At present,the control based on the MAP graph is used usually,but this control method has some shortages,for example larger data,poor adaptive capacity and difficulties in data updating.BP neural network control has adaptive and self-learning,nonlinear processing ability and high generalization,and faults tolerant ability in processing information.In this paper,BP neural network is used to control natural gas injection in order to solve the shortage of the MAP picture control.Simulation experiment shows thefeasibility and advantage of this method.

关键词：汽车；CNG汽车；注气控制

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For the channel source of large capacity image data,the error correcting capability and coding efficiency of channel encoding is very important,in order to solve the real-time and parallel of encoding,a kind of code encoding method realized easily by FPGA is proposed.First,the coding principle of the convolutional code is introduced in detail; Secondly,the representation method of the convolutional encoder is elaborated,including the state transition diagram and the grid diagram of the convolutional code; Then,the convolutional encoding algorithm based on FPGA will be converting to achieve rapid,parallel processing method; Finally,(2,1,7) convolutional code algorithm is simulated and tested.The experimental results show that:the convolutionai encoding module is capable of handling the input data stream of up to 160Mbps,processing speed,to meet the parallel and real-time of convolutional encoding for the channel source of large capacity image data,to improve the efficiency ofconvolutional encoding.

关键词：汽车；卷积码；网格图；编码效率； FPGA

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Simulation model of automobile power train has been built using ADVISOR,on the basis of Genetic Algorithm Tool Box,the paper takes a mini car as example to carry out performance simulation calculation and power train parametric optimization design.The result show that automobile power performance and fuel economy and emission performance have been greatly improved The power train has great influence on automobile power performance and fuel economy and emission performance.It is an important approach to optimize its matching parameters on reducing the fuel wastage,improving dynamical performance and decreasing the emission of waste gas.Genetic Algorithm is kind of global searching and optimized algorithm which integrates the principles of biological evolution with optimization technology and computer technology.ADVISOR,advanced simulation software,was developed on the basis of MATLAB/Simulink and can rapidly analyze automobile power performance,fuel economy and emission performance.It is a better approach to cope with automobile power train match optimization by integrating ADVISOR's accurate simulation with Genetic Algorithtn's searching optimization with high efficiency.

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Urban mobility is not only one of the pillars of modern economic systems, but also a key issue in the quest for equality of opportunity, once it can improve access to other services. Currently, however, there are a number of negative issues related to traffic, especially in mega-cities, such as economical issues (cost of opportunity caused by delays), environmental (externalities related to emissions of pollutants), and social (traffic accidents). Solutions to these issues are more and more closely tied to information and communication technology. Indeed, a search in the technical literature (using the keyword "urban traffic" to filter out articles on data network traffic) retrieved the following number of articles (as of December 3, 2013): 9,443 (ACM Digital Library), 26,054 (Scopus), and 1,730,000 (Google Scholar). Moreover, articles listed in the ACM query relate to conferences as diverse as MobiCom, CHI, PADS, and AAMAS. This means that there is a big and diverse community of computer scientists and computer engineers who tackle research that is connected to the development of intelligent traffic and transportation systems. It is also possible to see that this community is growing, and that research projects are getting more and more interdisciplinary. 

关键词：汽车；智能系统；交通运输

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The research of the expanding broken technology of engine connecting rod (also known as the fracture splitting technology) is based on some known factors which effect on connecting rod splitting to make comprehensive analysis on 36MnVS4,the material of connecting rod which is suitable for the fracture splitting technology,it analyses the effect of each chemical composition in steel on mechanical and physical properties,for material steel of new type fracture splitting connecting rod,and makes a theoretical analysis on the fracture splitting technology of the engine connecting rod.Through the analysis and research,a new method to research the fracture splitting of connecting rod is determined,as well as gets some rules to affect process parameter.

关键词：汽车；发动机连杆；断裂分割

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In this paper we propose a intelligent vehicle system design with MK60NS12VMD100 as the micro-controller unit and CMOS image sensor to obtain image information of the track.Our proposed comparator circuit instead of an A/D conversion to obtain the binary image enables us to achieve a bigger field of view and a higher processing speed.A unique algorithm to extract track information and to successfully extract the black guide line is devised.We also design a PID closed-loop control to adjust the rotate speed of driving electromotor and direction of steering electromotor.The results indicate that our design proposal is feasible.The intelligent vehicle could successfully achieve a high speed,while maintaining an excellent stability.

关键词：汽车；智能汽车；相机传感器

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