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随着我国汽车进入家庭步伐的加快及车辆的急速增加,车内空气污染问题逐步显现。相对于我国而言,国外对车内空气质量的重视较早,从20世纪70年代开始,很多国家就开始注意研究车内空气质量问题,并制定相关的法规标准。基于以上考虑,有必要对常用的车内空气质量标准的采样方法进行解读,并对其差异性进行研究。 相似文献
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针对车内空气质量不佳的现状,结合国内外相关法规政策及措施,分析了影响客车内空气质量的主要因素。提出了由国家引导、行业主导、社会全员参与的理念,采取了空气质量检测标准制定、将环保性作为正向开发的关键指标等手段,最终达到了改善车内空气质量的目的。 相似文献
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我国的车内空气质量标准,现在为止在国际上已经成为热点。最早标准是俄罗斯标准,之后还有JAMA、德国、ISO、韩国、世界车辆协调法规论坛UNWP29不一样,评价指标除了车内挥发物质控制有关,重要的是与汽车尾气有关的标准。我国已经制定的标准和正在修订的标准,主要对内饰材料进行控制,俄罗斯标准则主要参考依据。我们的标准是2004年开始立项; 相似文献
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文章综述了我国车内空气质量标准现状,包括行业标准和国家标准两个方面:行业标准为环境保护行业标准HJ/T 400-2007《车内挥发性有机物和醛酮类物质采样测定方法》和认证认可行业标准《汽车乘员舱内挥发性有机物和醛酮类物质动态采样测定方法》(征求意见稿);国家标准为国家推荐性标准GB/T 27630-2011《乘用车内空气质量评价指南》和国家强制性标准GB 18352.6-2016《轻型汽车污染物排放限值及测量方法》(中国第六阶段)。在分析了各个标准中关于车内空气质量的技术内容后,文章得出结论:未来我国对车内空气质量的标准要求将逐步加严,政府管控力度将逐步加大,汽车企业需未雨绸缪,做好技术储备,不断提高汽车产品车内空气质量水平以满足国家标准要求。 相似文献
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Ventilation system in a bus is employed to provide good indoor air quality and thermal comfort for passengers. Poor ventilation system will increase the concentration level of air contaminants which could affect the passenger’s health. The presence mixing ventilation system used in many buses is not efficient in removing the air contaminants from the passenger compartments. This article presents a study on the effects of using different ventilation setups on the concentration level of gases and particulate matters inside a passenger compartment of a university’s shuttle bus. The goal is to find a suitable layout of the air supply diffusers and air return grilles that would lower the concentration level of contaminants inside the passenger compartment. Field measurements were carried out to quantify the concentration of gases (carbon monoxide, carbon dioxide and formaldehyde) and particulate matters (PM1, PM2.5 and PM10). The measurements were done at the front section of the bus compartment, close to the front door. The data were acquired in the morning, afternoon and evening hours during a clear and sunny day. The bus travelled along an in-campus road with no passengers. A simplified three-dimensional model of the bus compartment was developed using computational fluid dynamics software. Flow analyses were carried out to predict distribution of gases and particulate matters concentration. The concentrations of carbon dioxide, carbon monoxide, formaldehyde and particulate matters obtained from the field measurements were used as boundary conditions and for validating the computational model. A parametric study was carried out to identify a suitable layout of air supply diffusers and air return grilles that would lower the concentration level of the air contaminants. Two types of ventilation systems were considered namely a displacement ventilation and an underfloor air distribution. Results show that the underfloor air distribution system is more effective in reducing the concentration level of gases and particulate matters inside the passenger compartment compared to the displacement ventilation system. 相似文献
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澳大利亚设计规则同我国汽车法规的比较 总被引:1,自引:0,他引:1
随着我国汽车工业的快速发展,汽车出口呈现逐年递增的趋势。所有汽车出口产品必须满足出口目的国的标准法规要求。文章针对M1类乘用车,对澳大利亚设计规则与中国的汽车标准法规进行了初步的比较研究,着重分析了它们之间的差异,供国内准备出口澳大利亚的汽车生产企业参考,以利于及早对产品进行相应的技术更改,顺利完成出口目的国要求的产品认证。 相似文献
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载人车室内部空气流场温度场的数值模拟 总被引:3,自引:1,他引:3
本文通过人体热特性分析,讨论了人体热边界条件的确定,在载人车室内部空气流动数值计算的基础上,对人体的热边界条件的选取进行了研究探讨,在此基础上建立了数字式暖体假人模型,为汽车空调热舒适性研究提供分析工具。 相似文献