JPS5829115U

JPS5829115U - Internal combustion engine exhaust pipe structure

Info

Publication number: JPS5829115U
Application number: JP12319981U
Authority: JP
Inventors: 雄二青木
Original assignee: 日産自動車株式会社
Priority date: 1981-08-20
Filing date: 1981-08-20
Publication date: 1983-02-25

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は従来の内燃機関の排気管構造の一例を示す斜視
図、第２図は第１図の断面図、第３図は従来の内燃機関
の排気管構造の他の例を示す斜視図、第４図は従来の内
燃機関の排気管構造のさら′　　　。に他の例を示す斜視図、第５図はこの考案による内燃機
関の一実施例を示す斜視図、第５図Ａは第５図の残部の
断面図、第６図は第５図のＡ−Ａ矢視断面図、第７図は
排気管を３本の管で構成した場合を示す第β図と同位置
における断面図である。１６．１７・・・・・・管、２５・・・・・・排気管、
２６〜２８・・・・・・管、１５，１５Ａ、２３・・・
・・・残部。第７図２６　２′７Ｊ”　　− ５FIG. 1 is a perspective view showing an example of a conventional exhaust pipe structure for an internal combustion engine, FIG. 2 is a sectional view of FIG. 1, and FIG. 3 is a perspective view showing another example of a conventional exhaust pipe structure for an internal combustion engine. , FIG. 4 is a diagram of the exhaust pipe structure of a conventional internal combustion engine. 5 is a perspective view showing an embodiment of the internal combustion engine according to the invention, FIG. 5A is a sectional view of the remaining part of FIG. 5, and FIG. -A sectional view; FIG. 7 is a sectional view at the same position as FIG. β, showing a case where the exhaust pipe is composed of three pipes. 16.17...pipe, 25...exhaust pipe,
26-28...tube, 15, 15A, 23...
...The rest. Figure 7 26 2'7J" - 5

Claims

[Scope of utility model registration request]

In an exhaust pipe structure for an internal combustion engine having an exhaust pipe having one end connected to an exhaust port of the internal combustion engine and the other end opening to the atmosphere, a part of the exhaust pipe is composed of a plurality of pipes parallel to each other,
The pipe line loss value that occurs when exhaust gas flows through a plurality of pipes for a unit length is approximately the same as or less than that of the remaining part of the exhaust pipe, and the total cross-sectional moment of inertia of each pipe is equal to or less than the cross-sectional area 2 of the remaining part of the exhaust pipe.
An exhaust pipe structure for an internal combustion engine, characterized in that the inner and outer diameters of each pipe are selected so as to be smaller than the second moment.