公开(公告)号：US06840270B2

公开(公告)日：2005-01-11

申请号：US10267479

申请日：2002-10-09

申请人： DeQuan Yu ,  Stephen T. Kempfer ,  Christopher C. Lobombarbe ,  David J. Rink ,  David M. Dokas ,  Paul E. Fisher ,  Jeff Moll

发明人： DeQuan Yu ,  Stephen T. Kempfer ,  Christopher C. Lobombarbe ,  David J. Rink ,  David M. Dokas ,  Paul E. Fisher ,  Jeff Moll

IPC分类号： F16K15/04 ,  F16K27/02

CPC分类号： F16K15/044 ,  F16K27/0245 ,  Y10T137/7914 ,  Y10T137/7925 ,  Y10T137/7927 ,  Y10T137/7937

摘要： A low deviation pressure relief valve for a fuel pump consisting of a housing having an elongated bore having a continuous wall, an axis, shoulders arranged on the wall so as to extend toward the axis. A ball in the housing has a diameter at least less than the diameter of the bore and a ball retainer located in the bore upstream from the shoulders forms a ball seat by pre-coining process. The ball is smaller than the retainer seat in diameter to ensure an edge seal with the ball. A spring coaxial with the axis located down stream from the ball retainer and supported on the shoulders, and the ball is located between the spring and the ball seat wherein low flow restriction is created and reduced pressure variation is created as fluid flows past the ball and less buckling in the spring is created by guide ribs.

摘要翻译： 一种用于燃料泵的低偏压减压阀，其由具有细长孔的壳体组成，所述细长孔具有连续壁，轴线，肩部布置在所述壁上以朝向所述轴线延伸。 壳体中的球具有至少小于孔径的直径，并且位于肩部上方的孔中的球保持器通过预压制过程形成球座。 球的直径小于保持座，以确保与球的边缘密封。 一个弹簧与轴线同轴，该轴线位于从球保持器的下游并支撑在肩部上，并且球位于弹簧和球座之间，其中产生低流量限制，并且随着流体流过球而产生减小的压力变化， 通过引导肋产生较少的弹簧屈曲。