提高摩托车催化剂耐久性能的新技术

以欧洲、台湾省及印度摩托车进行催化剂性能评价,测试催化转化器对于ECE-R47,ECE-R40及印度法规(IDC)的废气净化效果。通过仿真废气系统与实车测试结果,含钙钛矿型氧化物的Pd/Pt及Pd/Pt/Rh催化剂起燃特性较传统Pt/Rh催化剂佳,且热稳定性良好,不仅可达到各地区未来更严格的排放标准,还可提高使用寿命。由于钙钛矿型氧化物具有促进贵金属催化活性的特点,因此可减少贵金属用量,大幅降低成本,更有市场竞争力。     

怠速空气温控阀在摩托车上的应用

将怠速空气温控阀应用在骑式和弯梁摩托车上时,可大大提高摩托车的冷机起动、过渡和加速性能,摩托车发动机和化油器结构设计改动较小,成本增加也少,很值得在骑式和弯梁摩托车上推广使用。     

两轮摩托车应对欧Ⅲ排放标准的技术方案

分析了几种应对摩托车欧Ⅲ排放标准的技术方案，从技术先进性、成本、可行性和发展趋势方面得出了采用闭环电控燃油喷射系统＋三效催化转化器是满足欧Ⅲ标准的最佳方案。     

两轮摩托车车架疲劳强度试验及试验设备

车架疲劳强度试验,是把车架这一特定的部件从整车系统中分离出来,在台架上进行疲劳强度试验,优点在于:试验方便,成本低;能精确、直观地反映车架的结构设计水平、材料和焊接工艺质量水平;可与项目的开发工作同时进行,大大缩短了产品的开发周期和新品上市时间, 降低了开发风险。     

我国摩托车标准发展趋势分析

摩托车标准最初是依托汽车标准体系起步的,从最初的摩托车整车产品,过渡到发动机产品、零部件产品,逐渐形成具有自身特色的摩托车产品标准体系,有效支撑了我国摩托车产业的建立与发展,促进了产品质量及技术水平的不断提升。     

Road characteristics and environment factors associated with motorcycle fatal crashes in Malaysia

This study aims to determine risk factors contributing to traffic crashes in 9,176 fatal cases involving motorcycle in Malaysia between 2010 and 2012. For this purpose, both multinomial and mixed models of motorcycle fatal crash outcome based on the number of vehicle involved are estimated. The corresponding model predicts the probability of three fatal crash outcomes: motorcycle single-vehicle fatal crash, motorcycle fatal crash involving another vehicle and motorcycle fatal crash involving two or more vehicles. Several road characteristic and environmental factors are considered including type of road in the hierarchy, location, road geometry, posted speed limit, road marking type, lighting, time of day and weather conditions during the fatal crash. The estimation results suggest that curve road sections, no road marking, smooth, rut and corrugation of road surface and wee hours, i.e. between 00.00 am to 6 am, increase the probability of motorcycle single-vehicle fatal crashes. As for the motorcycle fatal crashes involving multiple vehicles, factors such as expressway, primary and secondary roads, speed limit more than 70 km/h, roads with non-permissible marking, i.e. double lane line and daylight condition are found to cause an increase the probability of their occurrence. The estimation results also suggest that time of day (between 7 pm to 12 pm) has an increasing impact on the probability of motorcycle single-vehicle fatal crashes and motorcycle fatal crashes involving two or more vehicles. Whilst the multinomial logit model was found as more parsimonious, the mixed logit model is likely to capture the unobserved heterogeneity in fatal motorcycle crashes based on the number of vehicles involved due to the underreporting data with two random effect parameters including 70 km/h speed limit and double lane line road marking.     

摩托车车架断裂问题探析

摩托车车架常见断裂部位,骑式车常位于主梁和车架后减振支撑部位的悬臂梁处;踏板车常位于主梁和踏板后部弯角部位。引起断裂的主要原因是车架前部不断受到来自地面和前轮的冲击,弯距和冲击力过大;而后部悬臂梁受重载弯距和后轮冲击力作用,发生断裂的几率也很大,但具体到某一款车架而言,断裂部位主要取决于结构形式、材料选用和载荷特征,需要具体问题具体分析,不能一概而论。     

我国摩托车燃油蒸发排放国家标准GB 20998-2007的制定与研究(1)

在研究制定我国摩托车燃油蒸发排放标准时,不仅要考虑我国摩托车工业的现状,还要最大限度地与国际排放法规接轨.由于燃油蒸发排放标准在我国是首次制定,并且加装摩托车燃油蒸发排放控制装置后,会对摩托车原来的起动性能、怠速性能、尾气排放等产生一定影响,建议摩托车生产企业在技术上积极应对,做好匹配工作,生产满足国家标准要求的产品.     

Analysis on Dynamic Characteristics of Motorcycle Frame and hnproving Design （1）

通过对车架结构动态性能的评估,找出动力学上的缺陷并进行合理的结构修改,改善了车架结构的动态特性,减小了摩托车振动,为摩托车结构的减振优化研究提供了可借鉴的方法。     

美国摩托车的早期预警及缺陷召回制度综述

摩托车质量问题是一个复杂的系统工程,安全预警及缺陷召回制度对于保障摩托车产品质量具有重要意义。美国是摩托车起步较早的国家之一。经过多年的发展,美国的摩托车产品的安全预擎及召回制度已经形成了一套完整有效的体系。我国摩托车产品的市场预警及召回管理还有空白,需有关部门制定相应的管理制度。