基于实际道路激励谱的摩托车平顺性混合仿真分析

应用道路模拟试验技术、有限元分析法和多体动力学仿真技术建立了摩托车平顺性混合仿真分析模型,并验证和改进了仿真模型;根据相关文献和标准探索了摩托车平顺性客观评价方法,最后对摩托车平顺性仿真进行了客观评价.     

摩托车振动舒适性测试系统搭建及应用

针对测试设备市场上还没有专门针对摩托车振动舒适性试验测试系统的状况,依据摩托车振动舒适性试验方法对设备的要求,搭建了专门用于摩托车振动舒适性客观评价试验的测试系统。主要包括加速度传感器、数据采集器、GPS测速仪等设备。试验应用表明,该测试系统结果正确,满足试验方法要求。该测试系统为开展摩托车振动舒适性客观评价奠定了基础,同时也能被用于一般振动试验分析。     

摩托车振动舒适性客观评价试验方法研究

简要回顾了摩托车振动舒适性评价方法研究现状,介绍摩托车振动舒适性客观评价方法的基本内容,包括测量原理、试验方法、数据处理流程等,依据试验数据分析对测量频率范围和测点的选择进行研究,对开展摩托车振动舒适性评价和改进设计具有一定参考意义。     

摩托车催化转化器性能台架评价试验研究

台架评价试验在摩托车催化转化器性能评价体系中起重要的作用。根据摩托车催化转化器的特点，参照汽车催化转化器台架评价试验方法，建立了摩托车催化转化器性能台架评价试验装置，用该装置进行了催化转化器空燃比特性，空速特性，温度特性，起燃时间特性等试验，为摩托车采用催化转化器提供了有效的技术支持和评价手段。     

摩托车排气烟度及其测试方法的试验研究

通过大量的试验研究，本文对摩托车排烟特性进行了总结、归纳，并提出了一种筒便易行的摩托车排烟测试方法，同时对方法的重复性、区分性进行了试验验证。用此方法部分摩托车的排气烟度进行测试，发现一些摩托车的排烟超过30％。试验说明对摩托车排气烟度进行限制势在必行。     

典型路面摩托车行驶车速统计分析

摩托车舒适性受车速影响较大。本研究在考虑轮距滤波影响下,分析了摩托车上任一点加速度响应与频率和车速之间的关系;通过大量典型路面行驶车速试验,得到了水泥路和碎石路行驶车速数据,并进行了统计分析,发现行驶车速近似服从贝塔(Beta)分布;运用优化的直接法对贝塔(Beta)分布形状参数进行了估计,得到了摩托车在水泥路和碎石路上行驶时的具体分布规律,为全面设计和评价摩托车振动舒适性提供了依据。     

摩托车催化转化器性能台架评价方法研究

台架评价试验在摩托车催化转化器性能评价体系中起重要的作用，但国内摩托车催化转化器性能台架评价目前尚属空白。在借鉴国内外汽车催化转化器台架评价试验方法的基础上，建立了摩托车催化转化器性能台架评价试验装置，并进行了催化转化器空燃比特性、空速特性、温度特性、起燃时间特性试验。     

摩托车排气烟度及其测试方法的试验研究

通过大量的试验研究,本文对摩托车排烟特性进行了总结、归纳,并提出了一种简便易行的摩托车排烟测试方法,同时对方法的重复性、区分性进行了试验验证。用此方法对部分摩托车的排气烟度进行测试,发现一些摩托车的排烟超过30％。试验说明对摩托车排气烟度进行限制势在必行。     

摩托车催化转化器的热冲击实验方法初探

本文介绍了一种对摩托车催化转化器进行热冲击的实验方法。该实验致力于建立一套对摩托车催化转化器进行评价的热冲击实验系统，初步建立了实验规范，并可以根据不同要求灵活变换。此外，对某催化器样品进行了实验。     

电动摩托车能量消耗率和续驶里程标准分析研究

能量消耗率和续驶里程是评价电动摩托车经济性的重要指标,GB/T 24157 -2009《电动摩托车和电动轻便摩托车能量消耗率和续驶里程试验方法》是世界上第一个电动摩托车能耗标准.本文归纳了主要试验方法,介绍了在标准实施中遇到的问题及采取的技术规范,并对标准试验方法进行了分析探讨.     

DY125-36A摩托车振动原因分析及结构改进

利用有限元分析方法,对DY125-36A整车/车架进行了模态分析,找出了其振动原因,从实验和模拟分析两方面入手,对DY125-36A摩托车和核心部件车架进行结构改进,使摩托车振动烈度下降30%左右,乘骑舒适性也得到了明显改善。     

Metrological management evaluation based on ISO10012: an empirical study in ISO-14001-certified Spanish companies

Environmental management systems based on the ISO 14001 standard rely strongly on metrological measurement and confirmation processes to certify the extent to which organizations monitor and improve their environmental behavior. Nevertheless, the literature lacks in studies that assess the influence of these metrological processes on the performance of environmental management in organizations, even now that the international standard ISO 10012 is already available to establish requisites and guidelines for the development of a metrological management system that is compatible with any other standardized management system. This work seeks to assess that influence through the development of an evaluation model for metrological management, which is then validated through an experimental analysis of the results obtained from the application of an audit process in 11 Spanish companies, all ISO-14001-certified and operating in different industrial sectors.     

Identifying the factors which affect the decision to attain ISO 14000

Formally adopted in 1996 by the International Organization of Standardization, ISO 14000 represents a new voluntary international environmental standard, which will likely be adopted by the vast majority of corporations. Its major focus is on the structure, implementation, and maintenance of a formal environmental management system. While the literature is clearly divided in its assessment of ISO 14000, an underlying common theme is that the decision to achieve ISO 14000 certification constitutes a major undertaking for most firms. Such an undertaking, it is argued, does not take place in a vacuum. Rather, it is a response to a number of factors or influences. However, no research to date has empirically identified these factors and explained how they can be leveraged into a competitive advantage. In this article, we use qualitative case studies to identify which factors affect the decision to attain ISO 14000 certification and we also explain how these factors can influence the level of success achieved during the certification process.     

摩托车振动的客观评价

本文以某越野公路两用摩托车为载体,针对发动机引起的摩托车振动提出一种客观评价方法。该评价方法可以对摩托车在发动机各转速段的振动情况做出评价,而且评价结果中考虑了人体对振动频率的敏感度因素。     

基于骑乘安全性的摩托车人机关系研究

摩托车的人机关系设计决定了骑乘安全性.通过对座椅、方向把及置脚踏板三个方面的人机关系的分析,阐述了其安全性的设计原则,研究具有一定的实用价值,是摩托车设计领域的有益探索.     

Trace level analysis of reactive ISO 14687 impurities in hydrogen fuel using laser-based spectroscopic detection methods

Hydrogen fuelled vehicles can play a key role in the decarbonisation of transport and reducing emissions. To ensure the durability of fuel cells, a specification has been developed (ISO 14687), setting upper limits to the amount fraction of a series of impurities. Demonstrating conformity with this standard requires demonstrating by measurement that the actual levels of the impurities are below the thresholds. Currently the industry is unable to do so, for measurement standards and sensitive dedicated analytical methods are lacking. In this work, we report on the development of such measurement standards and methods for four reactive components: formaldehyde, formic acid, hydrogen chloride and hydrogen fluoride. The primary measurement standard is based on permeation, and the analytical methods on highly sensitive and selective laser-based spectroscopic techniques. Relative expanded uncertainties at the ISO 14687 threshold level in hydrogen of 4% (formaldehyde), 8% (formic acid), 5% (hydrogen chloride), and 8% (hydrogen fluoride) have been achieved.