Vapor-adsorbent filter for reducing evaporative fuel emissions, and method of using same
    3.
    发明授权
    Vapor-adsorbent filter for reducing evaporative fuel emissions, and method of using same 有权
    用于减少蒸发燃料排放的蒸汽吸附过滤器及其使用方法

    公开(公告)号:US06432179B1

    公开(公告)日:2002-08-13

    申请号:US09822102

    申请日:2001-03-30

    IPC分类号: B01D3904

    摘要: A filter, for use in removing residual fuel vapors from within an engine's intake system, includes a filter element having a plurality of fibers, for placement in communication with an intake air flow passage. Each of the fibers has an internal cavity formed therein, and a longitudinally extending slot formed therein extending from the internal cavity to the outer fiber surface. The filter also includes a hydrocarbon-absorbing material disposed within the internal cavities of the fibers. The hydrocarbon-absorbing material may be a solid material such as, e.g., carbon, or may be a liquid such as a relatively non-volatile organic solvent. Alternatively, the material may be a combined solid and liquid. In one embodiment, each of the elongated fibers includes a central stem and a plurality of lobes extending outwardly from the central stem, with a longitudinally extending slot defined between adjacent lobes. Specific useful filter configurations are detailed.

    摘要翻译: 用于从发动机进气系统中去除残余燃料蒸汽的过滤器包括具有多个纤维的过滤元件,用于与进气通道连通。 每个纤维具有形成在其中的内腔,并且其中形成有从内腔延伸到外纤维表面的纵向延伸槽。 过滤器还包括设置在纤维的内部腔内的烃吸收材料。 烃吸收材料可以是固体材料,例如碳,或者可以是诸如相对非挥发性有机溶剂的液体。 或者,该材料可以是组合的固体和液体。 在一个实施例中,细长纤维中的每一个包括中心杆和从中心杆向外延伸的多个叶片,在相邻的叶片之间限定有纵向延伸的槽。 详细的具体有用的过滤器配置。