公开(公告)号：US20090121049A1

公开(公告)日：2009-05-14

申请号：US11983818

申请日：2007-11-13

申请人： Vicki A. Flynn ,  Allan R. Wells ,  Dominic N. Dalo ,  David A. Webb ,  Otto Muller-Girard, JR. ,  Ross G. Laing

发明人： Vicki A. Flynn ,  Allan R. Wells ,  Dominic N. Dalo ,  David A. Webb ,  Otto Muller-Girard, JR. ,  Ross G. Laing

IPC分类号： B05B1/30

CPC分类号： F02M61/165 ,  F02M61/12 ,  F02M61/18

摘要： An internal lower filter for a fuel injector includes a self-supporting guide guiding a reciprocably activated valve of an internal valve assembly of a fuel injector and a plurality of filter holes formed in said guide filtering fuel flowing through the fuel injector and preventing contaminants contained in the fuel from entering a sealing area of the internal valve assembly. Incorporating the guide filter in accordance with the invention in a fuel injector enables capturing particles or contaminants, generated within the fuel injector during assembly or during operation, before entering the sealing area of an internal valve assembly. Accordingly, failure modes of the injector, such as a stuck open condition that may lead to a hydraulic lock of the engine, can be reduced. By forming the filter holes in a typically used ball guide, no changes are required to the currently used assembly line equipment or the current assembly process.

摘要翻译： 用于燃料喷射器的内部下过滤器包括引导燃料喷射器的内部阀组件的可往复启动的阀的自支撑引导件和形成在所述引导件中的多个过滤孔，过滤燃料流过燃料喷射器并防止包含在 燃料进入内部阀组件的密封区域。 将根据本发明的导向过滤器结合在燃料喷射器中能够在进入内部阀组件的密封区域之前捕获在组装期间或在操作期间在燃料喷射器内产生的颗粒或污染物。 因此，可以减少喷射器的故障模式，例如可能导致发动机液压锁定的卡住打开状态。 通过在通常使用的球导向件中形成过滤孔，对当前使用的装配线设备或当前组装过程不需要改变。