公开(公告)号：US20240151197A1

公开(公告)日：2024-05-09

申请号：US18279825

申请日：2022-04-21

Applicant: USUI CO., LTD.

Inventor： Kosuke SUZUKI

IPC: F02M55/02

CPC classification number: F02M55/025 ,  F02M55/02

Abstract: A concentration of the stress due to a fuel pressure is avoided at a communication port between a fuel passage of a fuel rail body and a branch hole and the surrounding portion of the communication port at which the maximum stress is generated. A fuel rail having a fuel rail body 1 provided with a fuel passage 2 in a axial center direction of the fuel rai body 1, a boss 3 is provided on an outer peripheral surface of the fuel rai body 1, a receiving recess 5 of a mating member 4 is provided on an inner periphery of the boss 3, a branch hole 7 is provided between one end portion 6 of the receiving recess 5 of the boss 3 and the fuel passage 2 of the fuel rail body 1 for making the fuel passage 2 communicate with the receiving recess 5, the one end portion 6 being nearer to the fuel rail body 1 than the other end portion, and an axial length of the branch hole 7 is greater than a wall thickness of the fuel rail body 1.