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首页> 外文会议>16th Annual technical conference and exposition of the American Filtration and Separations Society >Development of Evaporative Emissions Filters for AutomotiveApplications
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Development of Evaporative Emissions Filters for AutomotiveApplications

机译：开发用于汽车的蒸发排放过滤器

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In order to further reduce the impact of the motor vehicle on the environment it is desirable tornminimize the evaporative emissions of the automobile. One of the egress paths of thesernevaporative emissions is through the intake manifold; throttle body and/or crankcase to PCVrnsystem, and finally through the air induction system. Therefore, one method of controlling thesernvapors is the placement of an adsorbing filter element in series in the primary airflow path withinrnthe air induction system. The first vehicles to use such a device to aid in PZEV evaporativernemissions compliance are now reaching the market.rnActivated carbon was chosen as the hydrocarbon adsorbing filter material, in the form of anrnextruded monolith with square air passages, or "honeycomb". In order to minimize the risk ofrnpotential damage to the element, a proprietary design that is patent pending, known as the SPCrncarbon monolith is employed. This technology is described; the application discussed, and testrndata shown to demonstrate its effectiveness.rnThe optimal package for the SPC carbon monolith placed it between the MAFS (mass airflowrnsensor) and the throttle body, closer to the MAFS, which presented some functional andrnpackaging challenges. The new, patented Visteon Long Life filtration system (LLF) technologyrnwas employed to enable the use of the SPC carbon design in the limited under-hood space ofrnthe first production application. In a related paper, this filtration technology is presented and itsrnfunctional effectiveness is also described. The LLF technology also enhanced evaporativernemissions performance in the vehicle, and this is also addressed.
机译：为了进一步减少机动车辆对环境的影响，期望最小化机动车辆的蒸发排放物。蒸发蒸发排放的途径之一是通过进气歧管。将节气门体和/或曲轴箱连接到PCVrnsystem，最后通过进气系统。因此，控制蒸汽的一种方法是在进气系统内的主气流路径中串联放置一个吸附过滤器元件。现在，市场上第一批使用这种装置来帮助满足PZEV蒸发排放要求的车辆。活性炭被选为碳氢化合物吸附过滤材料，其形式为带有方形空气通道的反挤压整体料或“蜂窝”形式。为了最大程度地降低对元件造成潜在损坏的风险，采用了正在申请专利的专有设计，即SPCrncarbon整体结构。描述了这项技术； SPC碳单块的最佳包装将其置于MAFS（质量气流传感器）和节气门体之间，更靠近MAFS，这对功能和包装提出了挑战。采用了获得专利的Visteon长寿命过滤系统（LLF）技术，以使SPC碳设计能够在首次生产应用中的有限发动机罩下使用。在相关的论文中，介绍了这种过滤技术，并描述了其功能有效性。 LLF技术还增强了车辆的蒸发排放性能，这一点也得到了解决。

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