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    • 8. 发明申请
    • Injector Orifice Plate Filter
    • 注射器孔板过滤器
    • US20150008271A1
    • 2015-01-08
    • US13933521
    • 2013-07-02
    • Caterpillar Inc.
    • David Clarence Mack
    • F02M61/16
    • F02M61/165F02M47/027F02M61/168F02M2200/02F02M2200/28F02M2200/8061F02M2200/8069Y10T29/49826
    • A hoop filter is adapted to protect a pressure control orifice plate in a common rail fuel injector from being plugged by contaminated fuel. Shaped in the form of a band, the filter is configured to engage the circumference of a pressure control orifice plate. For purposes of filtration, the orifice plate has a circumferential groove which intersects at least one internal orifice; the groove is externally covered by the body of the hoop filter. In one embodiment, the band-shaped hoop filter has small apertures adapted to filter out any particle having a size greater than 50 microns. In another disclosed embodiment, the hoop filter is a solid band-shaped edge filter without any apertures; instead the orifice plate periphery includes circumferentially spaced vertical grooves which interface with the bottom and top edges of the filter to restrict entry of contaminant particles.
    • 箍过滤器适于保护共轨燃料喷射器中的压力控制孔板不被被污染的燃料堵塞。 成形为带的形式,过滤器构造成接合压力控制孔板的圆周。 为了过滤的目的,孔板具有与至少一个内孔相交的圆周槽; 凹槽由箍过滤器的主体外部覆盖。 在一个实施例中,带状箍过滤器具有适于过滤出尺寸大于50微米的任何颗粒的小孔。 在另一个公开的实施例中,箍过滤器是没有任何孔的固体带状边缘过滤器; 代替的是,孔板周边包括周向间隔开的垂直槽,其与过滤器的底部和顶部边缘相接合以限制污染物颗粒的进入。