JPH0347422U

JPH0347422U -

Info

Publication number: JPH0347422U
Application number: JP10859189U
Authority: JP
Priority date: 1989-09-19
Filing date: 1989-09-19
Publication date: 1991-05-02

Description

[Brief explanation of drawings]

第１図から第７図はこの考案の一実施例を示し
第１図は排気マニホールドの斜視図、第２図は第
１図の−矢視断面図、第３図は第１図の−
矢視断面図、第４図は第１図の−矢視断面
図、第５図は第１図のｌ−ｌ線断面図、第６図は
第１図の要部拡大図、第７図は第６図の矢視図
、第８図は上記実施例と従来例とを比較した温度
特性図、第９図は従来マニホールドの斜視図、第
１０図は第９図の−矢視断面図、第１１図は
第９図の−矢視断面図、第１２図は第９
図の−矢視断面図、第１３図は第９図の
ｌ−ｌ線断面図である。１……排気マニホールド、３，５，７，９……
気筒、１３，１５……マニホールド分岐部、１７
……マニホールド集合部、２１，２７……分岐部
隔壁、２３，２５，２９，３１……分岐通路、３
３……集合部隔壁、３９……通路。 1 to 7 show an embodiment of this invention. FIG. 1 is a perspective view of the exhaust manifold, FIG. 2 is a sectional view taken along the - arrow in FIG. 1, and FIG. 3 is a - arrow sectional view in FIG.
4 is a sectional view taken along the - arrow in FIG. 1, FIG. 5 is a sectional view taken along line l-l in FIG. 1, FIG. 6 is an enlarged view of the main part of FIG. 1, and FIG. is a view in the direction of the arrow in FIG. 6, FIG. 8 is a temperature characteristic diagram comparing the above embodiment and the conventional example, FIG. 9 is a perspective view of the conventional manifold, and FIG. 10 is a sectional view in the direction of the - arrow in FIG. , FIG. 11 is a sectional view taken along the - arrow in FIG. 9, and FIG.
FIG. 13 is a cross-sectional view taken along the line l--l in FIG. 9. 1... Exhaust manifold, 3, 5, 7, 9...
Cylinder, 13, 15... Manifold branch, 17
...Manifold gathering part, 21, 27... Branch partition wall, 23, 25, 29, 31... Branch passage, 3
3...Aggregation bulkhead, 39...Aisle.

Claims

[Scope of utility model registration request]

a manifold branch section having branch passages each communicating with at least two adjacent cylinders;
A manifold collecting part is formed by collecting a plurality of manifold branch parts to form one passage communicating with the exhaust pipe, and at the manifold branch part, each branch passage is divided by a branch partition wall, and these branch parts In the exhaust manifold of a multi-cylinder internal combustion engine in which one partition wall is formed in the manifold collecting part, the collecting part partition wall is formed to have a thickness sufficiently thicker than that of the branching part partition wall. Exhaust manifold for a multi-cylinder internal combustion engine.