| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a common rail capable of preventing an inner diameter of a smallest diameter orifice formed on a bush from being varied even when the bush having the orifice is press-fitted into an inside-outside communication hole. <P>SOLUTION: The smallest diameter orifice 32 having the small inner diameter and an adjacent orifice 33 having an inner diameter larger than that of the smallest diameter orifice are formed on an inner peripheral face of the bush 31. A press-fitted portion 34, which is press-fitted into the inside-outside communication hole 24, and a non-press-fitted portion 35, which has a smaller outer diameter than the inside-outside communication hole 24, are formed on an outer peripheral face of the bush 31. The smallest diameter orifice 32 and the press-fitted portion 34 are deviatedly provided from each other not to axially overlap. Thus, even if the bush 31 is tightly press-fitted into the inside-outside communication hole 24, decrease of the inner diameter of the smallest diameter orifice 32 caused by deformation by press-fitting can be averted. Therefore, the failure such as variation of injection properties of an injector by reduction of the diameter of the smallest diameter orifice 32 can be avoided. <P>COPYRIGHT: (C)2007,JPO&INPIT |
