JPH0327814U

JPH0327814U -

Info

Publication number: JPH0327814U
Application number: JP8955689U
Authority: JP
Priority date: 1989-07-28
Filing date: 1989-07-28
Publication date: 1991-03-20

Description

[Brief explanation of drawings]

図面は本考案の実施例を示し、第１図は実施例
１の縦断側面図、第２図はその一部の作動状態を
示す同側面図、第３図および第４図は他の実施例
を示す断面図である。１……マフラ本体、２……最上流側膨張室、３
……他の膨張室、４……排気導入管、５……排気
管、６……排気連通孔、７……連通口、８……流
路閉止弁、９……スプリング、１４，１５……連
通路、３……膨張室。 The drawings show embodiments of the present invention; FIG. 1 is a longitudinal cross-sectional side view of Embodiment 1, FIG. 2 is a side view of the same showing a part of the operating state, and FIGS. 3 and 4 are other embodiments. FIG. 1...Muffler body, 2...Most upstream expansion chamber, 3
...Other expansion chamber, 4...Exhaust introduction pipe, 5...Exhaust pipe, 6...Exhaust communication hole, 7...Communication port, 8...Flow path closing valve, 9...Spring, 14, 15... ...Communication path, 3...Expansion chamber.

Claims

[Claims for Utility Model Registration] A plurality of expansion chambers 2, 3, 2 are provided inside the muffler body 1.
In this muffler for an internal combustion engine, the exhaust gas path in the muffler body 1 is formed in a roundabout manner by dividing the expansion chambers 2 and 23 and connecting the expansion chambers 2 and 23 in series through communication passages 14 and 15. , the exhaust gas introduction pipe 4 is passed through the most upstream expansion chamber 2 and enters another expansion chamber 3, and the exhaust gas introduction pipe 4 and the most upstream expansion chamber 2 are opened on the circumferential surface of the exhaust gas introduction pipe 4. While communicating through the communication hole 6, the exhaust introduction pipe 4
A flow path shutoff valve 8 biased to close by a spring 9 is disposed in the communication port 7 of the exhaust introduction pipe 4 in the other expansion chamber 3 into which A muffler for an internal combustion engine, characterized in that the valve is opened against a spring 9 by exhaust gas pressure.