Patent ID: 7516734

Claim:
A common rail comprising: a pressure accumulation chamber for accumulating high-pressure fuel inside; a pipe joint formed with an external screw on an outer peripheral face thereof, the external screw being connectable with an external pipe; an inside-outside communication hole for providing communication between a central portion of an outer end of the pipe joint and the pressure accumulation chamber; and a bush press-fitted to an inside of the inside-outside communication hole, wherein the bush is formed with a press-fitted portion press-fitted into the inside-outside communication hole and with multiple steps of orifices on an inner peripheral face of the bush for narrowing a fuel flow passage of the inside-outside communication hole such that the orifice having the smallest inner diameter is deviated from the press-fitted portion in an axial direction of the bush to prevent an overlap between the orifice having the smallest inner diameter and the press-fitted portion in a radial direction of the bush, the orifice of the bush having the smallest inner diameter is provided on a pressure accumulation chamber side of the press-fitted portion, an internal diameter of the inside-outside communication hole between the pressure accumulation chamber and a tip end portion of the bush on the pressure accumulation chamber side is larger than an external diameter of the tip end portion of the bush on the pressure accumulation chamber side.