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.     

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.     

PIC单片机在摩托车用点火系统中的运用

数字点火方式具有适时性好、响应快、控制点火时刻更精确等优点。用PIC 单片机实现对点火提前角的控制,可灵活调整提前角度,从而使发动机在各种工作转速范围内均能达到在最佳时刻点火,展现发动机最佳性能,实现提前角的数字化控制。     

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.     

摩托车整车噪声分析与消声器改进

基于噪声声压、声强测试,分析声压频谱、声强与声功率分布,识别某摩托车噪声源,结果表明,发动机缸头处与排气管处对整车噪声贡献相当,考虑优化成本和改进的复杂程度,主要针对排气消声器改进。利用有限元仿真手段和试验对原发动机排气消声器空气动力学性能和声学性能进行了研究,提出了消声器改进方案,通过消声器功率损失测试、插入损失测试和整车通过噪声实验,结果表明,改进方案使整车通过噪声降低1-2dB。     

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。     

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。     

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。     

摩托车用永磁无刷起动/发电机合一系统研究

文中提出一种由高性能稀土永磁无刷电机和双向变换器构成的摩托车起动/发电机合一系统,并对该系统的主电路拓扑结构、起动机的起动特性、发电机的调压特性和恒压控制的实现进行了详细介绍。最后,通过实验验证了该系统能够较好地实现起动和发电双重功能。