| 摘要 |
<P>PROBLEM TO BE SOLVED: To reduce a shock wave and pulse pressure generated in accompaniment to opening and closing of a fuel injection nozzle, and to reduce generation of a noise in a high-frequency area, transfer thereof, propagation thereof, and radiation thereof, in a fuel delivery pipe used for an engine for an electronic fuel injection automobile. <P>SOLUTION: A flat or circular-arc-shaped flexible absorbing face is formed on an outer wall face of a communication pipe, a rib crossed with an axial direction is fixed to an outer side of the absorbing face, or a recess is formed thereto. Alternatively, a clamp is attached to sandwich a socket attaching face of the communication pipe and the absorbing face from both sides. The rib and the clamp are preferably positioned in the vicinity of an axis directional end part of the communication pipe. The noise in the high-frequency area emitted from the fuel delivery pipe is thereby reduced, and the pulse pressure of the fuel flowing in the socket, and the shock wave thereof are also reduced by deflection of the absorbing face. <P>COPYRIGHT: (C)2004,JPO |
