微型汽车市场的发展及思考

中国汽车工业的发展中,微型车占据了很大的比重。在私人购车比例不断增加的过程中,微型车的市场格局及用户也发生了很大的变化,在这样的时期,研究微型车的市场变化及发展对于生产、流通企业来说都是有     

微型汽车借资本市场腾飞

经过短短十几年的发展,国内微型车行业脱颖而出,已连续多年产销增长率名列前茅,成为拉动全国汽车行业产销增长的因素之一。在国内汽车企业中,年产销量超过10万辆并居前10名的汽车企业中,微型车企业就占了5家,其销售量占全国汽车总销量的30％,占全国汽车市场近三分之一的份额。新款微型轿车频频推出,引起新闻媒体和社会大众的关注,作为能圆“老百姓轿车梦”的先导车型,微型车已开始融入我们的经济生活。 一个不曾被看好的微型车行业取     

微型汽车企业发展方向探讨

一、1991年微型汽车产销形势分析 1.1991年微型汽车企业排产计划(辆) 微型汽车微轿天津微型汽车厂 11000 8000 哈尔滨飞机制造厂 4000 长安机器厂 15000 柳州微型汽车厂 10000 昌河 3000 陕西飞机制造厂 3000 淮海 1500 合计 47500 2.市场情况在经历了两年的市场疲软后,1991年上半年汽车市场开始回升,但就微型汽车这一部分来说,尚存在以下几个问题:(1)销售仍然回升不平衡。(2)资金使用效益有所改善,生产能力未能充分发挥。(3)自由流动资金短缺,     

我国微型汽车生产企业经营策略

１９９４－１９９７年，微型汽车产量分别以３３．９％、３０．９％、２１．１％和２０．５％的辐度增长，强劲的走势给低迷的中国汽车市场带来勃勃生机，微型汽车连续７年高速增长使其对汽车市场产生越来越大的影响。本文介绍了柳州五菱汽车有限公司。长安汽车有限公司，昌河飞机工业公司和天津华利汽车有限公司等微型汽车生产企业的经营策略 。     

试论微型汽车市场与产品的发展方向

８０年代初，微型汽车开我国开始起步，经过十几的年发展，已从年产１０００－２０００辆占全国汽车总产量不足１％，发展到１９９７年年产３８．２４万辆、占全国汽车市场２３．８％的份额。     

包头地区筑路材料的分布与选择

针对内蒙古包头地区筑路材料的分布特征，结合工程实践进行归纳分析，并提出相应的见解，可供设计时参考。     

宁夏六盘山地区沥青路用性能PG分级研究

在搜集、分析宁夏六盘山地区的气象资料的基础上,借鉴美国SHRP沥青PG分级方法,采用SHRP公式将气温转换为位于路表以下20mm深处的平均最高温度作为高温设计温度;低温设计温度则采用路表温度并根据六盘山地区的实际情况进行修正。提出了六盘山地区沥青路面气候分区和沥青路用性能PG分级,并推荐了合适的沥青品种,旨在为六盘山地区修筑沥青路面提供技术支持。     

The impact of road improvements on road safety and related characteristics

This paper presents the historical and cultural background relating to road improvement and road safety characteristics in Kenya, a developing country in East Africa. Some who come from low-developed areas of developing countries often take time to comprehend the modern transportation infrastructure, especially roads, and have difficulty assimilating and customizing the same to their culturally tailored modes.This paper discusses two case studies: one on the socio-economic impact following improvements to a 50-km, high-class, high-traffic-volume road and the other on the monitoring and evaluation of road safety aspects along the Northern Corridor in Kenya also following major road improvements.The road improvements to the Nairobi-Thika Highway (a trunk road) have attracted many investors along the highway corridor. The high-speed road has also brought with it the unfortunate consequence of speeding vehicles colliding with pedestrians crossing the road at undesignated locations.The Northern Corridor, the transportation corridor that links the Great Lakes Countries of the Democratic Republic of Congo, Burundi, Rwanda, and Uganda from the port of Mombasa in Kenya, has had high accident rates for a considerable amount of time. The results of monitoring and evaluation exercises on the Northern Corridor have shown that drivers are the major contributors in causing accidents, with a component ratio of 49.4%; pedestrians are next at 21.7%. Data also shows that 24% of the accidents along the Northern Corridor are fatal, which is of major concern. The study additionally indicated that the majority of road users have not been exposed to education or training on road safety.This paper presents a number of recommendations arising from the road safety study regarding possible improvements in aspects of road safety along the corridor and potential applications of those changes to other roads in general. For example, there are recommendations related to the geometric design of the road, driver training and behavior, vehicle maintenance, and the need to enhance road safety through the utilization of road safety parks where road users can undergo training and drills on road safety aspects.In conclusion, we argue that the rehabilitation of the Northern Corridor from Mombasa on the Kenyan coast to the border with Uganda has led to significant road safety improvement.     

电动微型汽车的CAN总线仪表板设计

基于CAN总线技术设计完成了电动微型汽车仪表板,并针对CAN总线技术的优势进行了论述,同时简要介绍了仪表板采用的抗干扰措施。     

MASTA的微型车变速哭齿轮啮合

齿轮作为手动变速器的主要传动部件,其啮合情况对整个变速器的性能好坏有着至关重要的影响。文章采用MASTA软件实现了对某微型车变速器的齿轮啮合分析,并建立了变速器的仿真模型,模拟其实际负载状况完成变速器的齿轮传动过程分析;同时利用软件的齿轮微观修形模块,优化齿面啮合的接触斑点,减小传递误差,达到了改善齿面接触状况的目的。表明运用专业软件进行建模与仿真分析,可有效减少试验费用,缩短研发周期,为今后新变速器齿轮的开发与应用提供了较好的指导作用。     

微型汽车总装物流规划

1线旁物料存储区用来满足装配工线旁获取零件,并保证物流人员有一定的时间周转物料的存储区域,一般按装配车身在车门打开的情况下距离车门100mm。要确认线旁物料区域的大小就得了解流水线工作节拍、节距、零件尺寸、包装策略、线旁设备布局、物流配送周期策略等。工作节拍(JPH)     

ADAMS的微型车悬架优化设计

微型车悬架设计的好坏对车轮跳动时前轮前柬和轮距的变化有很大的影响。在ADAMS环境下建立了微型车的悬架刚－柔耦合模型,并在此基础上运用“主要目标法”对悬架进行了多目标优化设计,得到了悬架空间结构的几何形式。经过优化,前轮前束和轮距随车轮跳动时的变化范围大大减小,极大地改善了微型车行驶过程中的操作稳定性。     

Study on a road surface sensing system for snow and ice road

This paper deals with the fundamental research related to a new sensing system for road surface as the first step to construct an identification tool for the friction coefficient of the road ahead. In this paper, the albedo value is used for the measurement. Because the previous albedo meter measured the road surface by using sunlight, it was not used at night. Therefore, we propose a vehicle-mounted road surface sensing system by using a pair of solar cells with an additional light. From the experimental results, it is shown that the sensing system can measure the difference of road conditions, not only during daytime but also at night. For high reliability of detection, an image processing system of the road surface is proposed. It is shown that the sensor fusion can recognize the difference of the road surface.     

基于CRUISE的微型低速电动车主减速比研究

本文以某企业生产的微型低速电动车电驱动系统作为研究对象,按照产业标准及设计指标对电驱动系统关键部件进行参数匹配设计,利用CRUISE仿真软件分析了动力性及经济性;并运用ISIGHT与CRUISE联合仿真技术求解出该车型最佳减速比。通过样车实验表明,该方法求解微型低速电动车最佳主减速比准确可靠、效率高,可用于优化动力性与经济性。