PARTICULATE FILTER
    10.
    发明申请
    PARTICULATE FILTER 有权
    颗粒过滤器

    公开(公告)号:US20150059321A1

    公开(公告)日:2015-03-05

    申请号:US14388315

    申请日:2012-03-30

    IPC分类号: F01N3/035 F01N3/022

    摘要: An object of the invention is to suppress deposition of ash in a wall-flow particulate filter while curtailing drops in a trapping rate of PM. To attain the above object, the invention provides a wall-flow particulate filter delimited by porous partition walls having pores of a size that allows ash and ash aggregates to pass therethrough. In the filter, a coat layer having pores smaller than the pores of the partition walls is provided, at a region of the partition walls, from an upstream end thereof up to a position before a downstream end thereof.

    摘要翻译: 本发明的一个目的是抑制灰尘沉积在壁流微粒过滤器中,同时降低PM的捕获速率。 为了实现上述目的,本发明提供一种由多孔分隔壁界定的壁流微粒过滤器,其具有允许灰分和灰分聚集体通过的尺寸的孔。 在过滤器中,在分隔壁的一个区域,从其上游端到其下游端之前的位置设置有比分隔壁的孔小的孔的涂层。