The objective of the study was to assess the impact of a Saflex1 S Series solar control PVB (polyvinyl butyral) windshield on conventional vehicle fuel economy and electric vehicle (EV) range. The approach included outdoor vehicle thermal soak testing, RadTherm cooldown analysis, and vehicle simulations. Thermal soak tests were conducted at the National Renewable Energy Laboratory's Vehicle Testing and Integration Facility in Golden, Colorado. The test results quantified interior temperature reductions and were used to generate initial conditions for the RadTherm cooldownanalysis. The RadTherm model determined the potential reduction in air-conditioning (A/C) capacity, which was used to calculate the A/C load for the vehicle simulations. The vehicle simulation tool identified the potential reduction in fuel consumption or improvement in EV range between a baseline and solar control PVB configurations for the city and highway drive cycles. The thermal analysis determined a potential 4.0% reduction in A/C power for the solar control PVB configuration. The reduction in A/C power improved the vehicle range of EVs and fuel economy of conventional vehicles and plug-in hybrid electric vehicles.

关键词：电动汽车；太阳能；PVB玻璃

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Electric vehicles will longitudinally vibrate obviously under acceleration and regenerative braking conditions (because of torsional vibration of the electric vehicle powertrain).This paper includes models of motor rotor,gear reducer and differential assembly,half shafts,tire and body and nonlinear powertrain dynamic model in consideration of gear backlash and frictional characteristics between tire and ground.Real car tests confirm that it is correct under acceleration conditions.Then a two mass-spring damper linear model which is simplified from the nonlinear powertrain dynamic model is proposed to design torsional vibration control algorithm based on state feedback.The simulation results show that the algorithm can actively eliminate torsional vibration.

关键词：电动汽车；动力系统；状态反馈；扭转振动；

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Oshkosh Corporation (OSK) is taking an aggressive approach to implementing advanced technologies, including hybrid electric vehicle (HEV) technology, throughout their commercial and military product lines. These technologies have important implications for OSK's commercial and military customers, including fleet fuel efficiency, quiet operational modes, additional on-board electric capabilities, and lower thermal signature operation. However, technical challenges exist with selecting the optimal HEV components and design to work within the performance and packaging constraints of specific vehicle applications. OSK desires to use unique expertise developed at the Department of Energy's (DOE) National Renewable Energy Laboratory (NREL), including HEV modeling and simulation. These tools will be used to overcome technical hurdles to implementing advanced heavy vehicle technology that meet performance requirements while improving fuel efficiency.

关键词：电动汽车；计算机辅助工程技术；研究

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To share information and best practices on PEV deployment and define the role of state DOTs, the Washington State Department of Transportation initiated a Federal Highways Administration transportation pooled fund study, TPF-5(250) on strategies and best practices to support PEV and charging infrastructure commercialization. Representatives from seven other state transportation departments (Arizona, California, Georgia, North Carolina, Ohio, Oregon, and Wisconsin), Federal Highways Administration, and various other local and states entities (Siskiyou County, Oregon Governors Office, City of Raleigh, and California Energy Commission) participated in two workshops in Berkeley, CA and Raleigh, NC in March and June 2012, respectively. The Plug-in Electric Vehicle Action Tool is the synthesis of the workshops as well as previous research conducted by the Center for Climate and Energy Solutions (C2ES). The purpose of the Action Tool is to help state DOTs determine their goals for PEV deployment and to chart out a path for reaching those goals. The Action Tool is also a resource for learning about PEVs and best practices from other state agencies. Although state DOTs are the primary audience, many of the suggested actions and resources in the tool are applicable to other public entities such as local governments and other state agencies.

关键词：电动汽车；行动工具；插头

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关键词：电动汽车；EV项目；SAE世界大会

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This paper proposes a wheel slip control strategy for 4WD Electrical Vehicle with In-wheel Motors.In the first part of this paper,a brief introduction of sliding mode control for acceleration slip regulation is given.Consider that its control effect varies with road conditions,another algorithm which can automatically adapt to different roads is designed.This method takes advantage of the peculiarity of the longitudinal static tire force curve and regulates wheel slip ratio to the detected optimal value,aiming to maximize the traction force while preserving sufficient lateral tire force.Simulation results show that the slip rate can be regulated to a value around the optimal slip ratio,and the driving torque is very close to the maximum transmissible torque.The control strategy achieves stronger stability,shorter driving distance and hence better control performance.    

关键词：电动汽车；四轮驱动；防滑控制

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Controller area network (CAN) is one of the popular networks with the international standard,and adopted mostly on the vehicle.SAE J1939 is designed to allow electronic devices from different vendors to communicate with each other through a standard architecture.CAN communication length have some relationship with CAN bus rate,which may influence the rate choice and network topology.We design a CAN network with distributed control systems for a pure electric vehicle.The identification bit implementation of data for vehicle controllers is present in accordance with J1939 protocol.The vehicle network topology is considered based on controlling functions and CAN bus harness arrangement.The communication process for them is given based on CANoe platform and finally tested in real electric vehicle environment.

关键词：电动汽车；分布式控制系统；通信网络

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The overarching goal of this project was to instrument the new MnDOT Navistar truck used at MN Road. A rugged data acquisition, data recording and wireless transmission system was established for collection of various sensor signals from the truck. The truck was instrumented with a suite of 20 accelerometers, with these accelerometers being located both on the five axles of the truck and on the tractor and trailer bodies. In addition, the truck was instrumented with a differential GPS system and an inertial measurement unit in the tractor cab. A cRIO-based data acquisition system, a rugged laptop and Labview software together serve as a flexible platform for data acquisition. A wireless communication system has been established to communicate trigger signals to roadside cabinets when the truck is at desired GPS locations on the road. Data recording by in-pavement sensors is triggered by this system. Software has also been set up for automatic downloading of data from the truck to a server on the network at MN Road. The experimental performance of the developed system has been verified by multiple tests conducted by the research team. The above instrumentation of the truck will enable data collection on truck vibrations, enable analysis of correlations between truck vibrations and variations in signals of weigh-in-motion sensors, and enable recording of truck movements and pavement loads at MnROAD.

关键词：无线通信；称重；运动传感器；数据采集

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The Global System for Mobile Communications (GSM) Association predicts that there will be nearly 50 billion connected devices by 2025, nearly ten times the worlds predicted human population. ABI estimates that through 2012, Machine-to-Machine connected devices will grow by 100m units per year by 2012.1 An M2M module uses a device to capture an event (temperature, activation of airbags, etc.), which is relayed through a network, either wireless or wired, to an application, such as a software program, that translates the captured event into meaningful information (e.g., ice warning, crash notification). An M2M device typically converts analog sensor data into internet protocol (IP) packets for transmission over a communications medium. M2M applications are often characterized by the absence of a human decision maker directly controlling communications intensity, frequency and costs, though there are M2M applications in the transportation sector that also require interaction with drivers. M2M devices can be transmitted over a variety of communications mediums including mobile satellite services, cellular networks, and even combinations of carriers and carrier coverage areas across several networks. Hybrid wireless solutions include intermediary devices such as cellular modems connected to an M2M endpoint via wireless local, personal area or near field communications networks such as Wi-Fi, ZigBee, Bluetooth or Radio Frequency Identification (RFID). The most common communications system for M2M in use today in North America is second generation (2G) wireless, using either General Packet Radio Service (GPRS) or Short Message Service (SMS), which uses signaling protocols that set up and tear down voice calls to transmit small amounts of data.

关键词：汽车；通讯；无线通讯；软件程序；移动卫星服务

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The six important technical areas were selected by the workshop organizing committee, a group of experts from the auto and steel industries, and scientists from several National Laboratories. These selections were based on areas where there were known technical gaps, which if closed would have high impact on accelerating vehicle lightweighting with AHSS. The selected areas were: Steel Development, Fracture, Plasticity, Delayed Fracture/Hydrogen Embrittlement, Modulus Characterization and Joining. The main output of the workshop is contained within the breakout session reports, which summarize the technical requirements, engineering gaps and research needs. The breakout session reports are included below in the main workshop report.

关键词：钢铁；汽车；材料加工；车间；汽车燃料

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