| 摘要 |
<P>PROBLEM TO BE SOLVED: To reduce manufacturing cost of a fuel delivery pipe with a damper function, to improve external appearance, and to further lower fuel pressure fluctuation. <P>SOLUTION: An air chamber B is formed between a lower case and a partitioning wall member by fixing the periphery of the partitioning wall member 14 to the inner surface of the lower case 11, the air chamber is made to communicate with the outside air through a vent hole 11d formed in the lower case, and an internal space A filled with fuel is formed between the lower case and an upper case 15 by fluid-tightly brazing the upper case 15 in order to cover the upper side of the lower case. The inside diameter of the vent hole is formed to have a small diameter in comparison with the thickness of the lower case, and both the cases 11, 15 are brazed. After that, the lower case located in the vicinity of the outer end 11d1 of the vent hole is locally heated, and the base material of the lower case, melted by heating, is filled into at least a part of the vent hole, cooled and solidified to seal the vent hole. The upper case may be formed with a bent portion 15b1 projecting inward along a longitudinal direction. <P>COPYRIGHT: (C)2011,JPO&INPIT |
