Fastening structure of fuel delivery pipe and cylinder head of internal combustion engine

摘要

A fastening structure of a fuel delivery pipe and a cylinder head of an internal combustion engine includes three or more bosses provided on each of the cylinder head and the fuel delivery pipe, and fastening portions formed by bolting the bosses on the cylinder head to the bosses on the fuel delivery pipe. The fastening portions at both end portions of the fuel delivery pipe are less rigid than one or more fastening portions in a middle between the fastening portions positioned at both end portions of the fuel delivery pipe.

主权项

1. A fastening structure of a fuel delivery pipe and a cylinder head of an internal combustion engine, the fastening structure comprising:
three or more bosses provided on each of the cylinder head and the fuel delivery pipe; a plurality of fastening portions formed by bolting the bosses on the cylinder head to the bosses on the fuel delivery pipe; and ribs that reinforce the bosses provided on the cylinder head or the bosses provided on the fuel delivery pipe, wherein the plurality of fastening portions are such that fastening portions positioned at both end portions of the fuel delivery pipe are less rigid than one or more fastening portions positioned in a middle between the fastening portions positioned at both end portions of the fuel delivery pipe, wherein the ribs positioned at both end portions of the fuel delivery pipe are thinner than one or more ribs positioned in the middle, or no ribs are positioned at both end portions of the fuel delivery pipe.