Patent ID: 8495985

Claim:
A fuel delivery pipe with damper function, comprising: an elongate lower case provided at its bottom with a plurality of injection sockets for connection with fuel injection valves to be opened and closed under control of a controller unit; an upper case coupled with the lower case in a liquid-tight manner to form an internal space to be filled with fuel under pressure supplied from a fuel pump; a hollow partition wall member the whole periphery of which is brazed to an inner surface of the bottom wall of the lower case to form an air chamber isolated from the internal space, the partition wall member being flexible in accordance with pressure pulsations of fuel in the internal space caused by open-and-close operation of the injection valves; and a vent hole formed in the bottom wall of the lower case and sealed after communicating the air chamber with the atmosphere therethrough; wherein the injection sockets are placed at a one-sided position in a width direction across the longitudinal direction of the bottom wall of the lower case, while the partition wall member is placed at an opposite-sided position in the width direction to occupy a greater part of the bottom wall of the lower case; and wherein the vent hole is formed smaller in diameter than the thickness of the lower case and sealed by the mother metal of the lower case or a filler metal melted by local heating at its outer periphery and hardened by cooling after brazing process of the coupled lower and upper cases.