JPH03102020U - - Google Patents
Info
- Publication number
- JPH03102020U JPH03102020U JP1990010092U JP1009290U JPH03102020U JP H03102020 U JPH03102020 U JP H03102020U JP 1990010092 U JP1990010092 U JP 1990010092U JP 1009290 U JP1009290 U JP 1009290U JP H03102020 U JPH03102020 U JP H03102020U
- Authority
- JP
- Japan
- Prior art keywords
- expansion chamber
- length
- cross
- sectional area
- muffler
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 1
Landscapes
- Exhaust Silencers (AREA)
Description
第１図乃至第４図は本考案の実施例を示し、第
１図はマフラの縦断側面図、第２図は第１図の
−線断面図、第３図は第１マフラの上面図、第
４図はマフラ騒音の計測方法を示す概略図であり
、第５図は本考案の実施例と従来例とにおける減
音ｄＢと周波数Hzとの関係図であり、第６図は従
来例を示す第１図相当図である。
１…マフラ、２…第１膨張室、３…第２膨張室
、４…第３膨張室、５…排気入口管、６…排気出
口管、７…第１連通路、８…第２連通路。
1 to 4 show an embodiment of the present invention, in which FIG. 1 is a longitudinal sectional side view of the muffler, FIG. 2 is a sectional view taken along the - line in FIG. 1, and FIG. 3 is a top view of the first muffler. Fig. 4 is a schematic diagram showing a method of measuring muffler noise, Fig. 5 is a diagram showing the relationship between sound reduction dB and frequency Hz in the embodiment of the present invention and the conventional example, and Fig. 6 is a diagram showing the relationship between the sound reduction dB and the frequency Hz in the embodiment of the present invention and the conventional example. 2 is a diagram corresponding to FIG. 1. 1... Muffler, 2... First expansion chamber, 3... Second expansion chamber, 4... Third expansion chamber, 5... Exhaust inlet pipe, 6... Exhaust outlet pipe, 7... First communicating path, 8... Second communicating path .
Claims (1)
とも第１膨張室２・第１連通路７・第２膨張室３
・第２連通路８及び第３膨張室４を順に介して排
気出口管６を連通させて構成したエンジンのマフ
ラにおいて、 第１膨張室２の長さＬ１を短く形成するのに対
し、第２膨張室３の長さＬ２及び第３膨張室４の
長さＬ３を長く形成し、 第１膨張室２の横断面積Ａ１を広く形成するの
に対し、第２膨張室３の横断面積Ａ２及び第３膨
張室４の横断面積Ａ３を狭く形成した事を特徴と
するエンジンのマフラ。[Claims for Utility Model Registration] At least a first expansion chamber 2, a first communication passage 7, and a second expansion chamber 3 are provided in the exhaust inlet pipe 5 of the muffler 1 of the engine E.
- In an engine muffler constructed by connecting the exhaust outlet pipe 6 via the second communication passage 8 and the third expansion chamber 4 in order, the length L1 of the first expansion chamber 2 is formed short, while the length L1 of the first expansion chamber 2 is shortened. The length L 2 of the second expansion chamber 3 and the length L 3 of the third expansion chamber 4 are formed long, and the cross-sectional area A 1 of the first expansion chamber 2 is formed wide, while the cross-sectional area of the second expansion chamber 3 is formed long. An engine muffler characterized in that the area A2 and the cross-sectional area A3 of the third expansion chamber 4 are narrow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990010092U JPH0810655Y2 (en) | 1990-02-02 | 1990-02-02 | Engine muffler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990010092U JPH0810655Y2 (en) | 1990-02-02 | 1990-02-02 | Engine muffler |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03102020U true JPH03102020U (en) | 1991-10-24 |
| JPH0810655Y2 JPH0810655Y2 (en) | 1996-03-29 |
Family
ID=31513687
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1990010092U Expired - Lifetime JPH0810655Y2 (en) | 1990-02-02 | 1990-02-02 | Engine muffler |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0810655Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011102521A (en) * | 2009-11-10 | 2011-05-26 | Akira Tamai | Crime preventive door with door room |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5341540U (en) * | 1976-09-16 | 1978-04-10 | ||
| JPS5952023U (en) * | 1982-09-29 | 1984-04-05 | マツダ株式会社 | Engine exhaust silencer structure |
-
1990
- 1990-02-02 JP JP1990010092U patent/JPH0810655Y2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5341540U (en) * | 1976-09-16 | 1978-04-10 | ||
| JPS5952023U (en) * | 1982-09-29 | 1984-04-05 | マツダ株式会社 | Engine exhaust silencer structure |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011102521A (en) * | 2009-11-10 | 2011-05-26 | Akira Tamai | Crime preventive door with door room |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0810655Y2 (en) | 1996-03-29 |