| 摘要 |
PROBLEM TO BE SOLVED: To inhibit the vibration of a fuel piping by installing an orifice between a supply passage for guiding the fuel sent from a pump, and a branched passage branched from the supply passage for guiding the fuel to an injector, and specifying a ratio of a diameter of the orifice to a diameter of the branched passage. SOLUTION: Four holders 3 are respectively connected with the cylinders in a delivery pipe 2, and a supply passage is formed inside of the delivery pipe 2. An injector 1 for injecting the fuel to an intake passage of an engine, is connected with the delivery pipe 2 by the holder 3. In side of the holder 3, a branched passage 6 for guiding the fuel to the injector 1 is formed, and an orifice 9 is formed on a connection part of the branched passage 6 with the supply passage 5, in a condition that a ratio d/D of an opening diameter (d) of the orifice 9 to the passage diameter D of the branched passage 6 is determined to be 0.01<=d/D<=0.05. Whereby the capacity of the fuel to be supplied to the injector 1 can be ensured, and the vibration of the fuel piping can be inhibited. |
