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镁合金:汽车轻量化的必然选择 总被引:2,自引:0,他引:2
汽车在现代生活中扮演着重要角色,随着汽车的拥有量与日俱增,汽车对资源和能源的耗费量不断增长。汽车燃油带来的废气排放量也面临着越来越严厉的环境保护法规的挑战。汽车的轻量化是现代汽车的重要发展方向。减重节能是汽车技术进步的重要目标。在过去的几十年中,人们一直在寻求各种轻量化材料并将其使用在汽车上,镁合金是这方面的重要内容。 相似文献
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汽车在为人们提供便利的同时也带来了诸多环境和能源问题,因此汽车节能减排问题近来引起了越来越多人的关注。文中从中国汽车节能减排政策发展、新能源汽车市场反应及其零部件研发现状人手,对中国汽车节能减排发展现状进行了简要的分析,并结合实际提出了未来几年我国汽车节能减排的发展趋势。 相似文献
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<正>随着工业化和城市化进程的推进,全球对环境和资源保护的意识不断增强。世界各国在发展经济的同时,越来越注重生态环境的协调发展,绿色环保和节能减排成为发展主题。在此形势下,作为能源消耗和排放大户的汽车工业要想实现可持续发展必须降低燃油消耗,减少污染排放。目前,主要有3种途径解决汽车的节能、环保与安全问题,一是发展新能源汽车,二是发展先进发动机技术,三是实现汽车的轻量化[1]。新能源汽车是发展方 相似文献
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随着世界汽车工业的快速发展,汽车数量急剧增加,能源和污染问题形式严峻,发展新能源汽车是实现节能减排,发展低碳经济的重要切入点。文章主要对现阶段新能源汽车发展所存在问题进行分析,对我国新能源汽车发展的未来趋势进行展望。 相似文献
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2010年,随着金融海啸的退潮,全球经济正在复苏,各国汽车市场也迎来了春天,其中一些国家的汽车市场已经成为汽车出口新的增长点。我国汽车企业如何积极抢占这些新兴市场,拓展我国汽车的生存空间,如何突破这些国家的技术门槛和贸易壁垒,如何适应风俗习惯和气候差异,顺利进军这些市场, 相似文献
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所谓供应商第二方审核就是整车企业组织专业的审核员或聘用中立审核机构专业审核员,按整车企业质量管理和产品要求,以质量经营为核心、以最少资本投入获得最大经济效益为目标,运用系统工程方法,实现共同提高整车企业和供应商市场竞争能力的审核方法。国外先进汽车企业不但在整车企业大力推行供应商第二方审核,而且在汽车的零部件总成产品企业也迅速推 相似文献
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欧盟(EU)目前共有15个成员国,即奥地利、比利时、丹麦、芬兰、法国、德国、希腊、爱尔兰、意大利、卢森堡、荷兰、葡萄牙、西班牙、瑞典、英国,由原欧洲经济共同体(EEC)单纯经济实体发展成为较统一的政治、经济、外交和军事实体,在许多领域内制定并实施统一的政策和法律、法规。在汽车产品管理上,欧盟以1957年签订的基本法律《罗马条约》以及1991年的《罗马条约》 相似文献
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《国际生产研究杂志》2012,50(5):1318-1331
Reverse logistics has become more and more important to the automobile industry, owing to various reasons including unavoidable product recalls, legislative policy regarding environmental and sustainable issues, etc. In fact, the need for recovery of returned vehicles has been receiving more attention than ever before due to growing environmental concerns. Ironically, not many automobile manufacturers have a satisfactory reverse logistics system for recovering and reusing returned vehicles. This is partly because the effort devoted to this area is not very systematically investigated. In this connection, this paper aims at investigating the reverse logistics activities of the automobile industry, and to provide a framework for those activities. Firstly, the drivers for reverse logistics in this industry are revisited. Key components which are valuable and feasible for reuse or remanufacture are then identified. Based on this investigation, a framework of reverse logistics for the automobile industry is proposed. This is based on several evaluation factors (i.e. value of reversed products, legislation perspective and cost issues). Implementation issues and managerial implications are also summarised. 相似文献
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发展电动汽车已成为世界各国汽车产业可持续发展的战略选择,也是国际上竞相开发和应用的热点技术领域。我国在《国民经济和社会发展第十一个五年规划纲要》《国家中长期科学和技术发展规划纲要》以及国家《汽车产业发展政 相似文献
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This paper proposes a general mixture model framework for automobile warranty data that includes parameters for product field performance, the manufacturing and assembly process, and dealer preparation process. The model fits warranty claims as a mixture of manufacturing or assembly defects (quality problems) and usage related failures (reliability problems). The model also estimates the fraction of vehicles containing a manufacturing or assembly defect when leaving the assembly plant. This parameter measures the quality of the entire vehicle production process, i.e. component manufacturing and final assembly. The model also measures the proportion of manufacturing or assembly defects repaired by the automobile dealer prior to customer delivery. This conditional probability quantifies the ability of the vehicle preparation process to identify and repair defects prior to customer delivery. To apply the model to field failure or warranty data, the practitioner must identify parametric distributions for each of the two failure processes. To demonstrate the model, this paper develops a Weibull-Uniform mixture for manufacturer supplied warranty claim data. 相似文献
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