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随着国家对于节能减排的重视程度日益增强,相关法规对整车的排放性能、能耗水平的要求不断提高。进气系统对动力性、经济性、排放性能都有较大影响,因此进气系统的设计是否合理对整车性能能否达成有较大影响。文章以重卡进气系统为例,介绍了进气系统的作用,结构组成,近年来应用的新技术以及未来的发展趋势,文章对进气系统的设计具有一定指导作用。 相似文献
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随着交通流量和超载车辆的不断增加,潭耒高速公路桥面铺装损坏较为严重,维修周期越来越短,甚至出现了修补不久再次出现开裂、破碎、坑洞的现象.针对这一现象,对潭耒桥面开裂的成因进行了分析,并就改性环氧树脂进行桥面坑洞修补的技术进行了探讨. 相似文献
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裁判要旨:无意思联络的数人数个行为间接结合发生同一损害后果,加害人承担与各自的过失大小或者原因力比例相适应的按份责任,而非连带责任。[编者按] 相似文献
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介绍CRH380A型动车组刮雨器四级捡修过程中关于刮臂、驱动机构、控制装置及其线路和管路的检修内容,并对该型号刮雨器四级检修过程中常见故障进行分析。 相似文献
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To coordinate the various access technologies in the 4G communication system, intelligent vertical handoff algorithms are
required. This paper mainly deals with a novel vertical handoff decision algorithm based on fuzzy logic with the aid of grey
theory and dynamic weights adaptation. The grey prediction theory (GPT) takes 4 sampled received signal strengths as input
parameters, and calculates the predicted received signal strength in order to reduce the call dropping probability. The fuzzy
logic theory based quantitative decision algorithm takes 3 quality of service (QoS) metric, received signal strength (RSS),
available bandwidth (BW), and monetary cost (MC) of candidate networks as input parameters. The weight of each QoS metrics
is adjusted along with the networks changing to trace the network condition. The final optimized vertical handoff decision
is made by comparing the quantitative decision values of the candidate networks. Simulation results demonstrate that the proposed
algorithm provides high performance in heterogeneous as well as homogeneous network environments. 相似文献
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