JPH0573892B2 - - Google Patents
Info
- Publication number
- JPH0573892B2 JPH0573892B2 JP21971385A JP21971385A JPH0573892B2 JP H0573892 B2 JPH0573892 B2 JP H0573892B2 JP 21971385 A JP21971385 A JP 21971385A JP 21971385 A JP21971385 A JP 21971385A JP H0573892 B2 JPH0573892 B2 JP H0573892B2
- Authority
- JP
- Japan
- Prior art keywords
- exhaust
- partition plate
- pipes
- guide member
- expansion chamber
- 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.)
- Expired - Lifetime
Links
- 238000005192 partition Methods 0.000 claims description 18
- 230000003584 silencer Effects 0.000 claims description 8
- 238000002485 combustion reaction Methods 0.000 claims description 7
- 230000000694 effects Effects 0.000 description 5
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 1
- 230000030279 gene silencing Effects 0.000 description 1
- 230000001743 silencing effect Effects 0.000 description 1
Landscapes
- Exhaust Silencers (AREA)
Description
【発明の詳細な説明】
イ 発明の目的
〔産業上の利用分野〕
本発明は、内燃機関特にオートバイ・乗用自動
車用内燃機関の消音器に関する。DETAILED DESCRIPTION OF THE INVENTION A. Object of the Invention [Field of Industrial Application] The present invention relates to a muffler for internal combustion engines, particularly for motorcycles and passenger cars.
この種の消音器は、消音レベルの低減と、エン
ジンに対する背圧の低下によるその出力向上が要
求される。
This type of muffler is required to reduce the noise level and increase the output by reducing the back pressure to the engine.
上記の出力向上へ寄与する要因としては、消音
器の内部構造もさることながらパイプサイズで決
定される。ところがそのパイプを大径化すると消
音器内のパイプ配置もレイアウト上成りたたなく
なる。 Factors contributing to the above-mentioned output improvement are determined not only by the internal structure of the silencer but also by the pipe size. However, if the diameter of the pipe is increased, the layout of the pipes within the silencer becomes impossible.
そこでそれ等の管を複数の小径管に分けて対応
するものであるが、その排出管(結合管・尾管
等)の排気導入口側は一般に仕切板を貫いて膨張
室に突出してあるため、それ等小径管に対する排
気流入抵抗を増大して所期の目的が達成され難い
問題点がある。
Therefore, these pipes are divided into multiple small diameter pipes, but the exhaust inlet side of the exhaust pipe (joint pipe, tail pipe, etc.) generally penetrates the partition plate and protrudes into the expansion chamber. However, there is a problem in that the resistance to the exhaust gas flowing into the small-diameter pipe increases, making it difficult to achieve the intended purpose.
本発明はこの問題点を解消すると共に消音機能
をも向上させることを目的とする。 It is an object of the present invention to solve this problem and also to improve the silencing function.
ロ 発明の構成
〔問題点を解決するための手段〕
本発明は、仕切板に仕切られた1つの膨張室か
ら少なくとも2本以上の排出管を持つ内燃機関の
消音器に於て、その複数の排出管の排気導入口を
仕切板と略同一面位置とし、その排気導入口の前
面に横断面略半円状の共通の排気案内部材を配置
して仕切板に固着し、排気案内部材の端面を前記
の膨張室に開口させた内燃機関の消音器である。B. Structure of the Invention [Means for Solving Problems] The present invention provides a silencer for an internal combustion engine having at least two or more exhaust pipes from one expansion chamber partitioned by a partition plate. The exhaust inlet of the exhaust pipe is located approximately on the same plane as the partition plate, and a common exhaust guide member having a substantially semicircular cross section is arranged in front of the exhaust inlet and is fixed to the partition plate, and the end face of the exhaust guide member is fixed to the partition plate. This is a muffler for an internal combustion engine in which the expansion chamber is opened to the expansion chamber.
仕切板面に沿つて流れる排気流が排気案内部材
に入り、仕切板面に開口する複数の排出管の排気
導入口に流入するので、排気管への流入抵抗が小
さい。
The exhaust flow flowing along the partition plate surface enters the exhaust guide member and flows into the exhaust gas introduction ports of the plurality of exhaust pipes opening on the partition plate surface, so that the resistance to flow into the exhaust pipe is small.
また排気直流波の排出管を通じての筒抜けが少
なくなり干渉効果と相まつて消音効果を向上す
る。 In addition, the amount of exhaust DC waves passing through the exhaust pipe is reduced, and together with the interference effect, the noise reduction effect is improved.
第1図は、器筒1を仕切板2,3で3室4〜6
に仕切り、第1膨張室4に導入管7から排気を導
入し、結合管8,9で順次第2・第3の膨張室
5,6に排出させ、第3膨張室6から2本に分け
られた尾管(排出管)10,11で排出させる構
成の消音器に本発明を適用した例である。
Figure 1 shows a container 1 divided into 3 chambers 4 to 6 by partition plates 2 and 3.
The exhaust gas is introduced into the first expansion chamber 4 from the introduction pipe 7, and is sequentially discharged into the second and third expansion chambers 5 and 6 through the connecting pipes 8 and 9, and then divided into two from the third expansion chamber 6. This is an example in which the present invention is applied to a muffler configured to discharge through tail pipes (discharge pipes) 10 and 11.
即ちその尾管10,11の導入口10a,11
aを、膨張室6を形成する仕切板2の面に位置さ
せ(仕切板2から膨張室6への突出量を略ゼロに
する)、その導入口10a,11aの前面に共通
の排気案内部材12を設ける。 That is, the inlets 10a, 11 of the tail pipes 10, 11
a is located on the surface of the partition plate 2 that forms the expansion chamber 6 (the amount of protrusion from the partition plate 2 to the expansion chamber 6 is made approximately zero), and a common exhaust guide member is provided in front of the inlet ports 10a and 11a. 12 will be provided.
その案内部材12は第2図点線示のように横断
面略半円状で、その半円凹面を仕切板2の面に向
けて前面の導入口10a,11aを覆うように配
置し、適当長さに仕切板面に沿つて形成して仕切
板2に溶着する。またその排気案内部材12の長
手端面に開口13を設けて排気導入口とする。そ
の開口13は一端でも両端でもよいが、両端に設
けてその各端から最寄りの導入口10a,11a
までの距離を異ならせると干渉消音作用を向上す
る。 The guide member 12 has a substantially semicircular cross section as shown by the dotted line in FIG. It is formed along the partition plate surface and welded to the partition plate 2. Further, an opening 13 is provided in the longitudinal end face of the exhaust guide member 12 to serve as an exhaust introduction port. The opening 13 may be at one end or both ends, but it should be provided at both ends and from each end to the nearest inlet port 10a, 11a.
Interference silencing effect can be improved by making the distances different.
結合管9から第3膨張室6に排出した排気は基
本的に室壁面に沿つて流れるから、仕切板2の面
を沿流する排気が案内部材12の半円溝に入り、
その仕切板面に開口する尾管の導入口10a,1
1aに流入する。即ち案内部材12の開口13、
上記2つの導入口に自然に流入するから、細径の
パイプ10,11に形成しても導入抵抗を極力小
さくすることができる。その導入口10a,11
a、開口13は第1図示のように入口をラツパ状
に広げることが望ましい。 Since the exhaust gas discharged from the coupling pipe 9 into the third expansion chamber 6 basically flows along the chamber wall surface, the exhaust gas flowing along the surface of the partition plate 2 enters the semicircular groove of the guide member 12.
Tail pipe inlet 10a, 1 that opens on the partition plate surface
1a. That is, the opening 13 of the guide member 12,
Since it naturally flows into the two introduction ports, the introduction resistance can be minimized even if the pipes 10 and 11 are formed with small diameters. Its introduction ports 10a, 11
a. It is desirable that the opening 13 widens its entrance into a trumpet shape as shown in the first figure.
第3図は第2膨張室15と第3・第4膨張室1
6,17との結合管(排出管)18,19に対し
て本発明を適用した例である。なお消音器の構造
は例示以外の種々のものに適用される。 Figure 3 shows the second expansion chamber 15 and the third and fourth expansion chambers 1.
This is an example in which the present invention is applied to connection pipes (discharge pipes) 18 and 19 connected to pipes 6 and 17. Note that the structure of the silencer may be applied to various types other than those illustrated.
ハ 発明の効果
以上記載したように排気の背圧による出力損失
を少なくするため消音器の結合管・尾管等の排出
管を細径パイプに分割形成した場合、本発明の適
用によりその細径管への排気導入抵抗を軽減して
出力を向上し、さらにそれ等排出管からの直流波
筒抜けが回避される。また排気案内部材12の入
口開口13からパイプ10,11の導入口10
a,11aまでの距離の差に基づく干渉で音圧レ
ベルの減衰効果を有する。C. Effects of the Invention As described above, when the exhaust pipe such as the coupling pipe or tail pipe of a muffler is divided into small diameter pipes in order to reduce output loss due to exhaust back pressure, the present invention can be applied to The resistance to introducing the exhaust gas into the pipes is reduced to improve the output, and furthermore, the DC wave leakage from the exhaust pipes is avoided. Furthermore, the inlet opening 10 of the pipes 10 and 11 is connected to the inlet opening 13 of the exhaust guide member 12.
It has the effect of attenuating the sound pressure level due to interference based on the difference in distance to a and 11a.
第1図は本発明を尾管に適用した実施例の消音
器の縦断面図、第2図はその要部の正面図、第3
図は本発明を結合管に適用した消音器の縦断面
図。
1……器筒、2,3……仕切板、4,5,6…
…膨張室、10,11……尾管、10a・11a
……排気導入口、12……排気案内部材、13…
…開口、18,19……結合管。
Fig. 1 is a vertical cross-sectional view of a silencer according to an embodiment of the present invention applied to a tail pipe, Fig. 2 is a front view of the main parts thereof, and Fig. 3
The figure is a longitudinal sectional view of a silencer in which the present invention is applied to a coupling pipe. 1... Instrument barrel, 2, 3... Partition plate, 4, 5, 6...
...Expansion chamber, 10, 11...Tail pipe, 10a/11a
...Exhaust inlet, 12...Exhaust guide member, 13...
...Opening, 18, 19...Joining pipe.
Claims (1)
とも2本以上の排出管を持つ内燃機関の消音器に
於て、 その複数の排出管の排気導入口を仕切板と略同
一面位置とし、 その排気導入口の前面に横断面略半円状の共通
の排気案内部材を配置して仕切板に固着し、 排気案内部材の端面を前記の膨張室に開口させ
た内燃機関の消音器。 2 排気案内部材の一端また両端を膨張室に開口
させた特許請求の範囲1記載の内燃機関の消音
器。 3 複数の排出管の流出口は同一室にまた別々の
室に開口させた特許請求の範囲1記載の内燃機関
の消音器。[Claims] 1. In a silencer for an internal combustion engine having at least two or more exhaust pipes from one expansion chamber partitioned by a partition plate, the exhaust inlets of the plurality of exhaust pipes are abbreviated as the partition plate. An internal combustion engine in which a common exhaust guide member having a substantially semicircular cross section is arranged on the same plane in front of the exhaust inlet and is fixed to a partition plate, and the end face of the exhaust guide member is opened into the expansion chamber. silencer. 2. The muffler for an internal combustion engine according to claim 1, wherein one or both ends of the exhaust guide member are opened to the expansion chamber. 3. The muffler for an internal combustion engine according to claim 1, wherein the outlet ports of the plurality of exhaust pipes are opened into the same chamber or into separate chambers.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP21971385A JPS6282212A (en) | 1985-10-02 | 1985-10-02 | Muffler for internal combustion engine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP21971385A JPS6282212A (en) | 1985-10-02 | 1985-10-02 | Muffler for internal combustion engine |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6282212A JPS6282212A (en) | 1987-04-15 |
JPH0573892B2 true JPH0573892B2 (en) | 1993-10-15 |
Family
ID=16739801
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP21971385A Granted JPS6282212A (en) | 1985-10-02 | 1985-10-02 | Muffler for internal combustion engine |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6282212A (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0646895Y2 (en) * | 1990-12-28 | 1994-11-30 | 日東精工株式会社 | Parts supply device |
JP2546696Y2 (en) * | 1991-09-30 | 1997-09-03 | 日東精工株式会社 | Parts supply equipment |
JPH0544916U (en) * | 1991-11-22 | 1993-06-15 | 日東精工株式会社 | Parts supply device |
JPH0614132U (en) * | 1991-12-12 | 1994-02-22 | 日東精工株式会社 | Parts supply device |
-
1985
- 1985-10-02 JP JP21971385A patent/JPS6282212A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS6282212A (en) | 1987-04-15 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EXPY | Cancellation because of completion of term |