JPH01166715U

JPH01166715U -

Info

Publication number: JPH01166715U
Application number: JP6425288U
Authority: JP
Priority date: 1988-05-16
Filing date: 1988-05-16
Publication date: 1989-11-22

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例に係る排気マニホー
ルドを示す斜視図である。第２図は第１図の排気
マニホールドに用いる金属製パイプの側面図であ
る。第３図は第１図の排気マニホールドに用いる
金属製パイプの平面図である。第４図は従来の鋳
造製の排気マニホールドを示す側面図である。第
５図は従来の金属製パイプを用いた排気マニホー
ルドを示す側面図である。主要な部分の符号の説明、１０…金属製パイプ
、１１，１２，１４…結合管部、１３…金属製パ
イプ１０の先端部、１５…フランジ、２０…排気
マニホールド、Ｓ…金属製パイプ１０のセンター
ライン。 FIG. 1 is a perspective view showing an exhaust manifold according to an embodiment of the present invention. 2 is a side view of a metal pipe used in the exhaust manifold of FIG. 1. FIG. 3 is a plan view of a metal pipe used in the exhaust manifold of FIG. 1. FIG. FIG. 4 is a side view showing a conventional cast exhaust manifold. FIG. 5 is a side view showing a conventional exhaust manifold using metal pipes. Explanation of symbols of main parts, 10...Metal pipe, 11, 12, 14...Joining pipe section, 13...Tip of metal pipe 10, 15...Flange, 20...Exhaust manifold, S...Metal pipe 10 center line.

Claims

[Scope of utility model registration request]

In an exhaust manifold, in which joint pipes that are attached to each exhaust port of the cylinder head of an internal combustion engine are assembled via gaskets into one pipe, a plurality of annular protrusions are integrally provided on the wall surface in the same direction to form a joint pipe. A metal pipe that forms a joint pipe part by bending the tip end in the same direction as the annular protrusion part to form a joint pipe part, and a flange that is separately fixed to each joint pipe part of this metal pipe by welding. and at the end of a joint pipe formed by bending the tip of the metal pipe on the center line of the metal pipe at a bending angle of at least 0.7 times the diameter of the metal pipe. An exhaust system characterized in that the height of the flange fixed by welding is approximately the same as the height of the flange fixed by welding to the end of another joint pipe formed on the wall surface. manifold.