Passive fuel cell/lithium-ion capacitor hybridization for vehicular applications

Electric recreational vehicles represent a new challenge in terms of power supply systems compared to the current light-duty electric vehicles, which achieve high performance and long-range. The recreational vehicles need to heed the limited dimension requirements while assuring the high requested power. This paper proposes an integration of Lithium-Ion Capacitor (LIC) with Fuel Cell (FC) without any power electronic device for a three-wheel electric motorcycle. Unlike other hybrid power supply systems, the proposed FC-LIC passive configuration is lighter, compact, more efficient, and simpler to implement. Due to the different impedance of the components the system is self-management, in which FC supplies the average power component and LIC operates as a low-pass filter. In this respect, a simulator is built based on experimental tests to study the system performance in terms of hydrogen consumption and FC degradation. Subsequently, the system is tested under three standard motorcycle driving cycles at three different FC system lifespan stages. The obtained results demonstrate that a passive topology can supply the requested power along different FC stages of life and reported just an increment of 12% of hydrogen consumption at the oldest condition compared to the new condition.     

路矿煤炭运输设备检修与运用研究

指出路矿煤炭运输设备检修方面存在一些需要解决的检修技术问题,并对其产生原因进行分析。最后提 出几点改进意见,以求路矿煤炭运输健康、和谐、持续发展。     

摩托车浮动钳盘式制动器试验

对国产摩托车浮动钳盘式制动器与进口同类产品在效能、磨损、衰退和恢复等性能上进行了对比试验，以验证制动器国产化技术水平和性能的优劣．     

摩托车无线电骚扰研究

介绍了摩托车无线电骚扰的研究现状及其检测方法,并从理论上对无线电骚扰的产生、传播进行分析,总结其特点,提出了降低摩托车无线电骚扰的措施及发展趋势.     

大陆非道路摩托车运动管理要求及车辆要求

本文阐述了非道路摩托车对组织者、比赛场地、比赛选手及车辆的管理要求.并针对市场上非道路摩托车管理方面存在的问题提出了一些建议方案,以便于对完善这项运动的管理和推动技术进步产生一定的借鉴意义.     

Eight‐degrees‐of‐freedom kinematic model demonstrating after‐impact motorcycle's behavior

Abstract

Deriving a precise kinematic model to describe a motorcycle's behavior after impact is a prerequisite for developing a fact‐analytical tool for motorcycle accidents. Therefore, this paper successfully derives a high‐degrees‐of‐freedom model. Twenty‐four time‐response illustrations of simulation results demonstrate the dynamic behavior of the proposed model. A surface diagram is revealed while investigating the vehicle tracking. The twenty‐four illustrations include motion, velocity and acceleration with respect to longitudinal, lateral, vertical, pitching, yawing, vehicle rolling, rider rolling, and steering variations. The model proposed herein can be effectively used to preliminarily analyze the tendency toward stability or toward rolling of a motorcycle after a collision.     

摩托车挡泥板热流道注射模设计

摩托车挡泥板由于体积大,注射流程长,整体高度比较高,表面质量要求高,侧面有小孔,注射成型时容易出现短射、结合线、翘曲等缺陷。该模具采用了液压抽芯机构和热流道系统,有效地克服了短射和结合线的问题,减小了翘曲量,提高了产品质量。     

高速高精度连杆精镗机床的设计

摩托车连杆大端孔的精加工是连杆加工中的重要工序,通过对连杆加工前状况的分析和本序加工后要达到的各项精度进行分析,设计卧式双轴精镗床,保证了节拍28s/两件,圆度0.01 μm,孔的粗糙度达到Ra0.8,重点对机床的总体结构、机床的刀具、机床的镗头、工件在夹具上的定位、夹具上的让刀机构、机床的工作循环等进行分析,这对研制同类型的高精度的镗床具有一定的参考价值.     

纳米级活性氧化锌在摩托车外胎胎面胶中的应用

研究纳米级活性氧化锌减量替代间接法氧化锌在摩托车外胎胎面胶中的应用情况。结果表明,在保持胶料含胶率不变的情况下,在配方中以用量为间接法氧化锌60%的纳米级活性氧化锌减量替代间接法氧化锌,胶料物理性能、成品轮胎物理性能、耐久性能和高速性能等与间接法氧化锌胶料或生产轮胎相比无明显差异,生产过程中各工艺性能正常,生产成本降低。     

基于摩托车发动机动态台架的加速性能研究

简述了摩托车发动机动态测试的重要性。根据摩托车动力学理论,研究了摩托车发动机动态台架的组成结构、控制工作原理、动态试验流程,在动态台架上模拟了摩托车超越加速性能试验,并分析了不同油门变化率时的加速性能和规律。结果表明,加速性能不仅与油门开度有关,还受到油门变化率的影响,一定范围内,油门变化率小的加速性能要好于油门变化率大的加速性能。