JPS63177616U

JPS63177616U -

Info

Publication number: JPS63177616U
Application number: JP6694287U
Authority: JP
Priority date: 1987-05-01
Filing date: 1987-05-01
Publication date: 1988-11-17

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例を示す側面図、第２
図は第１図の―線断面を示す断面図、第３図
は前記実施例の要部を示す斜視図、第４図は前記
実施例の要部を示す分解斜視図、第５図は前記実
施例の要部を示す断面図、第６図は従来例を示す
断面図、第７図は他の従来例を示す分解斜視図で
ある。１……集合排気管、２……４気筒エンジン、１
０……排気パイプ、１１，１１Ａ，１１Ｂ……端
部、１２……凸部、１３……平面部分、２０……
集合管、２２……断面略４葉のクローバー型の開
口、２３，２３Ａ，２３Ｂ……膨出部。 Figure 1 is a side view showing one embodiment of the present invention;
The figure is a sectional view taken along the line -- in FIG. 1, FIG. 3 is a perspective view showing the main parts of the embodiment, FIG. 4 is an exploded perspective view showing the main parts of the embodiment, and FIG. FIG. 6 is a sectional view showing a main part of the embodiment, FIG. 6 is a sectional view showing a conventional example, and FIG. 7 is an exploded perspective view showing another conventional example. 1...Common exhaust pipe, 2...4-cylinder engine, 1
0... Exhaust pipe, 11, 11A, 11B... End, 12... Convex portion, 13... Flat portion, 20...
Collecting pipe, 22... Clover-shaped opening with a cross section of approximately four leaves, 23, 23A, 23B... Swelling portion.

Claims

[Claims for Utility Model Registration] A common exhaust pipe for a 4-cylinder engine formed by connecting the ends of four exhaust pipes connected to each cylinder of a 4-cycle 4-cylinder engine to a collecting pipe, comprising: The ends of the exhaust pipes are arranged in a cluster so that the center of each is approximately square, and each end has two planes extending tangentially from the circumferential surface of the end toward the center of the collection arrangement. The convex portions are made perpendicular to each other to form a convex portion, and the convex portions are brought into close contact with each other at the flat portions so as not to create a gap between each end, and the opening at one end of the collecting pipe has a circumferential 4 A bulge having a generally arcuate cross-section corresponding to each of the clustered ends is provided at several locations, and the opening is formed into an approximately four-leaf clover shape into which each of the clustered ends can fit. A collective exhaust pipe for a 4-cylinder engine.