共查询到19条相似文献,搜索用时 125 毫秒
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本文对W汽车公司乘用车车内异味问题进行研究,对问题比较集中的A(高配、低配)车型进行整车VOC测试、零部件VOC测试和空调异味研究试验,研究发现车内乙醛超标主要是地毯及门窗密封条引起的,乙苯及二甲苯超标则是顶棚引起的;空调异味则是蒸发器芯体产生的冻结臭。本文为车内空气质量的评测与改善提供研究方法,为整改此品牌车内空气质量提供可靠的研究数据。 相似文献
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本文针对汽车振动环境的特殊性,分析了其对汽车电子装置的主要影响;进一步介绍了几种主要的振动试验方法,并结合汽车电子装置相关标准对振动试验进行了探讨. 相似文献
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随着汽车工业的飞速发展,汽车车灯照明效果的检测越来越被加以重视。本文主要介绍了汽车灯具测试中的若干注意事项,并对汽车灯具认证中容易出现的不合格项目进行了分析,在汽车灯具检测领域中具有一定的参考价值。 相似文献
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针对国标未管控的夏季高温状态座舱环境VOC测试,本文对比分析了三种高温VOC测试方法,结果表明ISO/JAMA标准测试过程的设计与实际车辆使用场景较一致,PV3938方法则相对严苛;不同标准辐照方式的差异会造成车内零部件表面温度高低排序差异;JAMA标准条件下车内各零部件表面温度与海南户外曝晒车内平均温度较匹配。 相似文献
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大港石化公司污水处理场废气处理装置采用QBF(Quick Bio Filter)法去除VOC(挥发性有机物)以及硫化氢等恶臭物质的二次污染治理问题,通过检测装置入、出口数据,计算其去除率并进行分析,实验结果表明,QBF法用于处理VOC切实可行,可作为污水处理场去除恶息的首先方法之一。 相似文献
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概述了紫外光固化涂料在汽车塑料部件、修补漆、面漆上的应用,并展望了紫外光固化涂料在汽车涂装上的发展趋势. 相似文献
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本文介绍了汽车内饰材料常见的老化试验方法:人工加速老化试验、IP/DP箱暴晒和整车暴晒,分别讨论三种试验方法涉及的规范以及操作性.人工加速老化试验能快速掌握汽车内饰材料老化性能,缩短材料研发周期;IP/DP箱和整车对内饰件或其装配件进行的老化试验降低内饰材料加工工艺存在的风险,确保了内饰材料质量.整车暴晒收集的数据为人... 相似文献
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Na K 《Journal of environmental management》2006,81(4):392-398
This study describes the methodology used to obtain the volatile organic compound (VOC) source signature of vehicle exhaust. To accomplish this, C(2)-C(9) VOCs were measured in a traffic tunnel located in Seoul, South Korea. The effect of VOC concentrations from the outside ambient air was considered in the determination of the source signature. To examine the effects of ambient air on VOC concentrations inside the tunnel, the ratio of propane to the total VOC concentrations was compared between the entrance and middle sites in the tunnel. Propane was used as a standard not only because of its insignificant contribution to vehicle exhaust gas, but also the fact that propane is the most abundant VOC in the atmosphere of Seoul. The ratio of propane to the total VOC concentrations was higher at the entrance site than at the middle location by, on average, 60%. This suggests that ambient air affects the inside tunnel air to a greater extent at the entrance site as compared to the middle site. The contribution of ambient air to the air inside the tunnel at the entrance location varied from 30% to 67%, with an average of 55%. This is 1.5 times higher than the value measured at the middle location, which ranged from 20% to 48%, with an average of 36%. This shows that ambient air substantially affects the inside air of the tunnel. Excluding the effects of ambient air on the air inside the tunnel can provide an improved chemical composition for vehicle exhaust using tunnel measurements. We believe that the concentration difference between the two sites within the tunnel provides a more accurate chemical composition of vehicle exhaust as compared to that obtained from a measurement taken at only one point inside the tunnel. 相似文献
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Volatile organic compounds (VOCs) are an important source of contamination of groundwater supplies in Massachusetts and many parts of the United States. One local response is to require sewering in wellhead protection areas as an easily enforceable policy designed to reduce the probability of VOC contamination of groundwater. Data were collected for 238 wellhead protection areas in Massachusetts on VOC contamination levels and the sewered and unsewered land uses in those aquifer recharge areas. Logistic regression procedures were used to see whether sewering had any statistical effect on likelihood of contamination of well water. The results provided limited, but not overpowering, support for the idea that requiring commercial and industrial land uses to use sewers would reduce the chance of VOC contamination. 相似文献