JPS6378114U

JPS6378114U -

Info

Publication number: JPS6378114U
Application number: JP17132186U
Authority: JP
Priority date: 1986-11-10
Filing date: 1986-11-10
Publication date: 1988-05-24

Description

[Brief explanation of the drawing]

第１図はこの考案の第１の実施例の排気消音器
の断面図、第２図は第１図の排気消音器が装着さ
れた車両用エンジンの排気系の全体構成図、第３
図は第２図の―断面図、第４図は第２図の拡
大された断面図、第５図は内側連通孔と外側連通
孔との間の長さｔの変化に伴う共鳴周波数の変化
を示す説明図、第６図は第１図の変形例を示す断
面図、第７図は第６図の実施例の吸音効果を示す
説明図、第８図は第１図の他の変形例を示す断面
図、第９図は第２の実施例の排気消音器の断面図
、第１０図は第９図の―断面図、第１１図は
第９図および第１０図の変形例を示す断面図、第
１２図はメインマフラの詳細図、第１３図は従来
の排気消音器の第４図に相当する断面図である。１５…内筒、１５ａ…内側連通孔、１７…内側
空間部、１９…中筒、１９ａ…外側連通孔、２１
…外側空間部。 FIG. 1 is a sectional view of an exhaust silencer according to a first embodiment of the invention, FIG. 2 is an overall configuration diagram of a vehicle engine exhaust system equipped with the exhaust silencer of FIG. 1, and FIG.
The figure is a sectional view of Fig. 2, Fig. 4 is an enlarged sectional view of Fig. 2, and Fig. 5 is a change in resonance frequency due to a change in the length t between the inner communication hole and the outer communication hole. FIG. 6 is a sectional view showing a modification of FIG. 1, FIG. 7 is an explanatory diagram showing the sound absorption effect of the embodiment shown in FIG. 6, and FIG. 8 is another modification of FIG. 1. 9 is a sectional view of the exhaust silencer of the second embodiment, FIG. 10 is a sectional view of FIG. 9, and FIG. 11 is a modification of FIGS. 9 and 10. 12 is a detailed view of the main muffler, and FIG. 13 is a sectional view corresponding to FIG. 4 of a conventional exhaust muffler. 15... Inner cylinder, 15a... Inner communication hole, 17... Inner space, 19... Middle cylinder, 19a... Outer communication hole, 21
...Outer space.

Claims

[Scope of utility model registration request]

An inner cylinder, a middle cylinder provided outside the inner cylinder to form an inner space between the inner cylinder, and a middle cylinder provided outside the middle cylinder to form an outer space. an outer cylinder, the inner cylinder is provided with a plurality of inner communication holes for communicating the inside of the inner cylinder and the inner space, and the middle cylinder is provided with a plurality of outer communication holes for communicating the inner space and the outer space. An exhaust muffler characterized in that the central axis of the inner communicating hole substantially coincides with the central axis of the outer communicating hole.