JPH01124016U - - Google Patents
Info
- Publication number
- JPH01124016U JPH01124016U JP1712588U JP1712588U JPH01124016U JP H01124016 U JPH01124016 U JP H01124016U JP 1712588 U JP1712588 U JP 1712588U JP 1712588 U JP1712588 U JP 1712588U JP H01124016 U JPH01124016 U JP H01124016U
- Authority
- JP
- Japan
- Prior art keywords
- exhaust
- passage
- restricting member
- exhaust conduit
- sectional area
- 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.)
- Pending
Links
- 238000002485 combustion reaction Methods 0.000 claims 1
- 230000007423 decrease Effects 0.000 claims 1
- 238000011144 upstream manufacturing Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 7
- 230000003584 silencer Effects 0.000 description 1
Landscapes
- Exhaust Silencers (AREA)
Description
第１図は本考案の第１実施例を示す要部縦断面
図、第２図は本実施例に供される通路絞り部材を
示す斜視図、第３図は本考案の第２実施例を示す
要部縦断面図、第４図Ａは本考案の第３実施例を
示す要部縦断面図、第４図ＢはＡの―線断面
図、第４図Ｃは同第３実施例による排気ガス流を
示す説明図、第５図は排気流量との関係で示す排
圧特性図、第６図Ａ，Ｂは機関回転数との関係で
示す音圧レベル特性図、第７図は排気流量との関
係で示す消音量特性図、第８図は排気装置の全体
構成図、第９図は従来における排気装置の要部縦
断面図、第１０図は音圧変動を示す特性図、第１
１図Ａ，Ｂは、従来装置における排気ガス流を示
す説明図である。
６……リアチユーブ（排気導管）、６ａ……内
面、７……メインマフラ（消音器）、２１，３１
……通路絞り部材、２１ａ……内面、３１ａ……
外面。
Fig. 1 is a vertical cross-sectional view of a main part showing a first embodiment of the present invention, Fig. 2 is a perspective view showing a passage restricting member used in this embodiment, and Fig. 3 is a view showing a second embodiment of the present invention. 4A is a vertical sectional view of the main part showing the third embodiment of the present invention, FIG. 4B is a sectional view taken along the line A, and FIG. 4C is according to the third embodiment of the present invention An explanatory diagram showing the exhaust gas flow, Fig. 5 is an exhaust pressure characteristic diagram shown in relation to the exhaust flow rate, Figs. 6 A and B are sound pressure level characteristic diagrams shown in relation to the engine rotation speed, and Fig. 7 is an exhaust pressure characteristic diagram shown in relation to the engine speed. Figure 8 is an overall configuration diagram of the exhaust system; Figure 9 is a vertical sectional view of the main parts of a conventional exhaust system; Figure 10 is a characteristic diagram showing sound pressure fluctuation; 1
1A and 1B are explanatory diagrams showing exhaust gas flows in a conventional device. 6... Rear tube (exhaust pipe), 6a... Inner surface, 7... Main muffler (silencer), 21, 31
...Passage restricting member, 21a...Inner surface, 31a...
Exterior.
Claims (1)
、上記排気導管の途中に設けられた通路絞り部材
とを備えた排気装置であつて、上記通路絞り部材
の外形を、上記排気導管の通路断面積が上流側か
ら下流側に亘つて漸次小さくなるように形成する
と共に、最少通路断面積の下流側付近が略一定の
通路断面積となるように形成したことを特徴とす
る内燃機関の排気装置。 An exhaust system comprising an exhaust conduit for introducing exhaust gas from an engine into a muffler, and a passage restricting member provided in the middle of the exhaust conduit, wherein the outer shape of the passage restricting member is set to a passage cutoff of the exhaust conduit. An exhaust system for an internal combustion engine, characterized in that the area is formed so that it gradually decreases from the upstream side to the downstream side, and the passage cross-sectional area is approximately constant near the downstream side of the minimum passage cross-sectional area. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1712588U JPH01124016U (en) | 1988-02-12 | 1988-02-12 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1712588U JPH01124016U (en) | 1988-02-12 | 1988-02-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01124016U true JPH01124016U (en) | 1989-08-23 |
Family
ID=31230629
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1712588U Pending JPH01124016U (en) | 1988-02-12 | 1988-02-12 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01124016U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008142789A1 (en) * | 2007-05-17 | 2008-11-27 | Isamu Okuno | Automobile exhaust pipe unit |
-
1988
- 1988-02-12 JP JP1712588U patent/JPH01124016U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008142789A1 (en) * | 2007-05-17 | 2008-11-27 | Isamu Okuno | Automobile exhaust pipe unit |
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