JPH036806Y2 - - Google Patents
Info
- Publication number
- JPH036806Y2 JPH036806Y2 JP18348585U JP18348585U JPH036806Y2 JP H036806 Y2 JPH036806 Y2 JP H036806Y2 JP 18348585 U JP18348585 U JP 18348585U JP 18348585 U JP18348585 U JP 18348585U JP H036806 Y2 JPH036806 Y2 JP H036806Y2
- Authority
- JP
- Japan
- Prior art keywords
- exhaust
- compartment
- pipe
- compartments
- gas
- 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
Links
- 238000002485 combustion reaction Methods 0.000 claims description 12
- 238000005192 partition Methods 0.000 claims description 8
- 230000003584 silencer Effects 0.000 claims description 8
- 239000007789 gas Substances 0.000 description 54
- 230000000694 effects Effects 0.000 description 5
- 238000013016 damping Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
Landscapes
- Exhaust Silencers (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案は、内燃機関の排気系に設備される消音
器の改良に関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an improvement of a muffler installed in an exhaust system of an internal combustion engine.
従来、内燃機関用消音器としては、例えば第３
図，第４図に示すものが知られている。
Conventionally, as a muffler for an internal combustion engine, for example, a third muffler is used.
The one shown in Fig. 4 is known.
第３図に示す消音器は、両端が端板１１，１２
で閉塞され内部が三枚の仕切板１３，１４，１５
で四個の区画室Ａ，Ｂ，Ｃ，Ｄに画成された外筒
１と、外筒１の内外部を連通する排気導入管２及
び排気導出管３とを備えている。排気導入管２は
そのガス入口端２１が外筒１の外部にあり、その
ガス出口端２２が第三番目の区画室Ｃに開口され
ており、第一，第二番目の区画室Ａ，Ｂを貫通す
るように配設されている。排気導出管３はそのガ
ス入口端３１が第一番目の区画室Ａに開口しその
ガス出口端３２が外筒１の外部にあり、第二，第
三，第四番目の区画室Ｂ，Ｃ，Ｄを貫通するよう
に配設されている。又、第一，第二，第三番目の
区画室Ａ，Ｂ，Ｃを連通するための多数の小孔４
を有する導管４が仕切板１３，１４を貫通するよ
うに配設されており、これ等区画室Ａ，Ｂ，Ｃが
拡張室となるように構成されている。更に、排気
導入管２のガス出口端２２と対向するように仕切
板１５にレゾネータパイプ５が設けており、第四
番目の区画室Ｄがレゾネータ室となるように構成
されている。 The silencer shown in FIG. 3 has end plates 11 and 12 at both ends.
The inside is closed with three partition plates 13, 14, 15.
It includes an outer cylinder 1 defined into four compartments A, B, C, and D, and an exhaust gas introduction pipe 2 and an exhaust gas discharge pipe 3 that communicate the inside and outside of the external cylinder 1. The exhaust gas introduction pipe 2 has a gas inlet end 21 located outside the outer cylinder 1, and a gas outlet end 22 that opens into the third compartment C, and connects the first and second compartments A and B. It is arranged so that it penetrates. The exhaust outlet pipe 3 has a gas inlet end 31 that opens into the first compartment A, a gas outlet end 32 that is located outside the outer cylinder 1, and a gas outlet end 32 that opens into the first compartment A, and which opens into the second, third, and fourth compartments B and C. , D. Also, a large number of small holes 4 for communicating the first, second, and third compartments A, B, and C.
A conduit 4 having a diameter is disposed so as to pass through the partition plates 13 and 14, and these compartments A, B, and C are configured to serve as expansion chambers. Furthermore, a resonator pipe 5 is provided on the partition plate 15 so as to face the gas outlet end 22 of the exhaust gas introduction pipe 2, and the fourth compartment D is configured to serve as a resonator chamber.
この消音器に於ける排気ガスの流れは矢印で示
されており、排気導入管２のガス出口端２２から
吐出した排気ガスは第三番目の区画室Ｃで拡張す
ると共に略180度旋回されて導管４に入り、第二，
第一番目の区画室Ｂ，Ａで更に拡張され、第一番
目の区画室Ａで略180度旋回されて排気導出管３
のガス入口端３１に入るようになる。 The flow of exhaust gas in this muffler is shown by an arrow, and the exhaust gas discharged from the gas outlet end 22 of the exhaust introduction pipe 2 expands in the third compartment C and is rotated approximately 180 degrees. Enter conduit 4, the second
The exhaust pipe 3 is further expanded in the first compartments B and A, and rotated approximately 180 degrees in the first compartment A.
The gas enters the gas inlet end 31 of the.
第４図に示す消音器は実開昭60−120214号とし
て知られているもので、第３図に於ける第二番目
の区画室Ｂと導管４とを省略した構造となつてお
り、この代わりに排気導入管２の第一番目の区画
室Ａに貫通する部分と排気導出管３の第三番目の
区画室Ｃ（この消音器では第二番目となる）に貫
通する部分とに、夫々多数の小孔２３，３３を穿
設してある。 The silencer shown in Fig. 4 is known as Utility Model Application No. 60-120214, and has a structure in which the second compartment B and conduit 4 in Fig. 3 are omitted. Instead, a portion of the exhaust inlet pipe 2 that penetrates into the first compartment A, and a portion of the exhaust outlet pipe 3 that penetrates the third compartment C (second in this muffler), respectively. A large number of small holes 23, 33 are bored.
この消音器に於ける排気ガスの流れも矢印で示
してあり、排気導入管２内に流入した排気ガスは
小孔２３から第一番目の区画室Ａに分流拡張して
排気導出管３のガス入口端３１に入り、残る他の
分流が排気導入管２のガス出口端から第三番目の
区画室Ｃに拡張し小孔３３から排気導出管３に入
るようになる。 The flow of exhaust gas in this muffler is also shown by arrows, and the exhaust gas that has flowed into the exhaust introduction pipe 2 is branched and expanded from the small hole 23 to the first compartment A, and the exhaust gas flows into the exhaust outlet pipe 3. The remaining branch flow enters the inlet end 31 and expands from the gas outlet end of the exhaust gas introduction pipe 2 to the third compartment C and enters the exhaust gas outlet pipe 3 through the small hole 33.
前述の第３図に示す消音器では、排気ガスを旋
回させるために排圧が上昇すると共に気流音が高
くなるという問題がある。又、急激な拡張が行な
われるため圧損が高くなるという問題がある。
The above-mentioned muffler shown in FIG. 3 has a problem in that the exhaust pressure increases and the air flow noise increases because the exhaust gas is swirled. Furthermore, there is a problem in that pressure loss increases due to rapid expansion.
又、第４図に示す消音器では、第３図の消音器
のような問題はかなり解消されるが、分流された
排気ガスが夫々別個に排気導出管３に入るため騒
音減衰機能が低下するという問題がある。 Further, the muffler shown in Fig. 4 largely eliminates the problems of the muffler shown in Fig. 3, but the divided exhaust gases enter the exhaust outlet pipe 3 separately, so the noise attenuation function is degraded. There is a problem.
本考案はこのような従来の問題点を解決するた
めに為されたもので、その目的は、騒音減衰機能
を低下することなく圧損，排圧を低減し、消音器
を含めた内燃機関の排気系に於ける排気ガスの流
通性を向上することにある。
This invention was devised to solve these conventional problems, and its purpose is to reduce pressure drop and exhaust pressure without reducing the noise attenuation function, and to reduce the exhaust pressure of internal combustion engines, including the muffler. The objective is to improve the flow of exhaust gas in the system.
本考案に係る内燃機関用消音器は、両端が端板
で閉塞され内部が仕切板で複数の区画室に画成さ
れた外筒と、外筒の内外部を連通する排気導入管
及び排気導出管とを備えた内燃機関用消音器に於
て、排気導入管を少なくとも一個の区画室を貫通
して第二番目以後の区画室にそのガス出口端を開
口すると共に、排気導入管の各区画室貫通部分に
多数の小孔を穿設し、排気導入管が貫通し又はそ
のガス出口端が開口した区画室を画成する仕切板
に夫々導管を設けてこれ等区画室を拡張室とし、
排気導出管を前記排気導入管のガス出口端が開口
した区画室内に貫入させると共に、排気導出管の
ガス入口端を閉塞し且つ前記貫入部分に多数の小
孔を穿設したものである。
The silencer for an internal combustion engine according to the present invention includes an outer cylinder whose both ends are closed with end plates and whose interior is defined by a partition plate into a plurality of compartments, and an exhaust inlet pipe and an exhaust outlet that communicate with the inside and outside of the outer cylinder. In a silencer for an internal combustion engine, the exhaust inlet pipe passes through at least one compartment to open its gas outlet end to a second and subsequent compartments, and each compartment of the exhaust inlet pipe A large number of small holes are bored in the penetrating portion, and a conduit is provided in each of the partition plates defining compartments through which an exhaust gas introduction pipe passes or the gas outlet end thereof is open, and these compartments are used as expansion chambers;
The exhaust outlet pipe is inserted into a compartment in which the gas outlet end of the exhaust introduction pipe is open, the gas inlet end of the exhaust outlet pipe is closed, and a large number of small holes are bored in the penetrated portion.
〔考案の作用〕
本考案に係る内燃機関用消音器は、排気導入管
から分かれて吐出する排気ガスを、排気導出管に
導入する前で合流させて、騒音減衰機能を低下さ
せることなく圧損，排圧を低減するものである。[Operation of the invention] The silencer for an internal combustion engine according to the invention merges the exhaust gases that are separated from the exhaust inlet pipe and discharged before being introduced into the exhaust outlet pipe, thereby reducing the pressure loss and reducing noise without reducing the noise damping function. This reduces exhaust pressure.
以下、本考案に係る内燃機関用消音器の実施例
を第１図，第２図に基づいて説明する。
DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a muffler for an internal combustion engine according to the present invention will be described below with reference to FIGS. 1 and 2.
第１図は本考案の基本原理を示すものであり、
従来例である第４図との比較で理解されるよう
に、排気導出管３のガス入口端３１を閉塞し両区
画室Ａ，Ｃを導管６で連通したことが特徴となつ
ている。 Figure 1 shows the basic principle of this invention.
As can be understood from a comparison with the conventional example shown in FIG. 4, the characteristic is that the gas inlet end 31 of the exhaust outlet pipe 3 is closed and both compartments A and C are communicated through a conduit 6.
即ち、排気導入管２からの排気ガス分流は、導
管６によつて区画室Ｃ内で干渉混合され、排気導
出管３の小孔３３のみに入るため、騒音減衰機能
の低下が防止されるのである。 That is, the exhaust gas branch flow from the exhaust gas introduction pipe 2 is interfered and mixed in the compartment C by the conduit 6 and enters only the small hole 33 of the exhaust gas discharge pipe 3, so that the noise damping function is prevented from deteriorating. be.
第２図は本考案の具体的構造を示すものであ
り、外筒１，区画室Ａ，Ｂ，Ｃ，Ｄの構成は第３
図と同一であり、排気導入管２，排気導出管３の
構成は第４図と略同様である。排気導入管２に穿
設された小孔２３は第一，第二番目の区画室Ａ，
Ｂの貫通部分の双方に存在し、排気導出管３のガ
ス入口端３１はプラグ７を嵌合することによつて
閉塞されている。 Figure 2 shows the specific structure of the present invention, and the configuration of the outer cylinder 1 and the compartments A, B, C, and D is the third one.
This is the same as in the figure, and the configurations of the exhaust gas introduction pipe 2 and the exhaust gas discharge pipe 3 are substantially the same as in FIG. The small holes 23 bored in the exhaust gas introduction pipe 2 are connected to the first and second compartments A,
The gas inlet end 31 of the exhaust outlet pipe 3 is closed by fitting the plug 7 thereto.
このような構造に於ては、ガス入口端３１から
排気導入管２に流入した排気ガスが、小孔２３を
通して第一，第二番目の区画室Ａ，Ｂに分流拡張
すると共に、ガス出口端２２を通して第三番目の
区画室Ｃにも分流拡張する。従つて、排気導入管
２内では、排気ガスが徐々に分流拡張されること
になり、排気ガスの流速が徐々に低減されるため
圧損が低減されることになる。尚、このような区
画室Ａ，Ｂを増加すれば、圧損の低減がより向上
することになるが、排気導入管２のガス出口端２
２に対向するようにレゾネータパイプ５を設けた
場合には、区画室Ａ，Ｂの増加によつて第四番目
の区画室Ｄ（レゾネータ室）の共鳴機能が低下す
るため、図示のような二個の区画室Ａ，Ｂとする
のが好ましい。又、このような排気ガスの流速の
徐々の低下は、端板１１，１２や仕切板１３，１
４，１５への負荷を低減し、振動や異音の発生防
止にも有効である。このように分流拡張された排
気ガスは導管６を通して第三番目の区画室Ｃで干
渉混合しさらに騒音減衰が為される。又、この間
急激な旋回がなされないため、排圧が上昇したり
気流音が高くなることはない。尚、第三番目の区
画室Ｃにおける前記干渉混合は、排気導出管３へ
の排気ガスの侵入が小孔３３のみから為されるた
め、充分に行なわれることが期待されるが、好ま
しくは可能な限り小さな小孔３３を可能な限り多
数設けるのが良い。 In such a structure, the exhaust gas flowing into the exhaust introduction pipe 2 from the gas inlet end 31 is branched and expanded into the first and second compartments A and B through the small hole 23, and the exhaust gas flows through the gas outlet end. The flow is also branched and expanded to the third compartment C through 22. Therefore, in the exhaust gas introduction pipe 2, the exhaust gas is gradually branched and expanded, and the flow velocity of the exhaust gas is gradually reduced, resulting in a reduction in pressure loss. Incidentally, if the number of such compartments A and B is increased, the reduction in pressure loss will be further improved, but the gas outlet end 2 of the exhaust introduction pipe 2
If the resonator pipe 5 is provided so as to face the resonator pipe 2, the resonance function of the fourth compartment D (resonator chamber) will decrease due to the increase in the number of compartments A and B. Preferably, there are separate compartments A and B. Moreover, such a gradual decrease in the flow velocity of exhaust gas causes the end plates 11 and 12 and the partition plates 13 and 1 to
It is also effective in reducing the load on 4 and 15 and preventing the generation of vibrations and abnormal noises. The exhaust gas divided and expanded in this way is interferingly mixed in the third compartment C through the conduit 6, and the noise is further attenuated. Moreover, since no rapid turning is performed during this time, the exhaust pressure does not increase and the airflow noise does not become high. Note that the interference mixing in the third compartment C is expected to be carried out sufficiently because the exhaust gas enters the exhaust outlet pipe 3 only through the small hole 33, but preferably it is possible. It is preferable to provide as many small holes 33 as possible.
以上のように本考案に係る内燃機関用消音器
は、排気ガスを急激に旋回させないため排圧の上
昇や気流音が高くなるのを防止できる効果があ
り、又、急激な拡張が為されないため圧損が低減
される効果がある。更に、排気ガスの分流を干渉
混合するため、騒音減衰機能を低下させない効果
がある。
As described above, the internal combustion engine silencer according to the present invention has the effect of preventing exhaust gas from swirling rapidly, thereby preventing an increase in exhaust pressure and air flow noise, and also because it does not expand rapidly. This has the effect of reducing pressure loss. Furthermore, since the divided exhaust gas flows are interferingly mixed, there is an effect that the noise attenuation function is not deteriorated.
又、このような消音器の性能向上は、内燃機関
の排気系全体の排気ガスの流通性を向上する効果
がある。 Furthermore, such improved performance of the muffler has the effect of improving the flow of exhaust gas throughout the exhaust system of the internal combustion engine.
第１図は本考案の基本原理を示す簡略断面図、
第２図は本考案に係る内燃機関用消音器の具体的
構造を示す断面図、第３図，第４図は従来例を示
す簡略断面図である。
１……外筒、２……排気導入管、３……排気導
出管、６……導管、２２……ガス出口端、２３…
…小孔、３１……ガス入口端、３３……小孔、
Ａ，Ｂ，Ｃ，Ｄ……区画室。
Figure 1 is a simplified sectional view showing the basic principle of the present invention.
FIG. 2 is a cross-sectional view showing a specific structure of a muffler for an internal combustion engine according to the present invention, and FIGS. 3 and 4 are simplified cross-sectional views showing conventional examples. DESCRIPTION OF SYMBOLS 1... Outer cylinder, 2... Exhaust introduction pipe, 3... Exhaust outlet pipe, 6... Conduit, 22... Gas outlet end, 23...
...Small hole, 31...Gas inlet end, 33...Small hole,
A, B, C, D... compartment.
Claims (1)
画室に画成された外筒と、外筒の内外部を連通す
る排気導入管及び排気導出管とを備えた内燃機関
用消音器に於て、排気導入管を少なくとも一個の
区画室を貫通して第二番目以後の区画室にそのガ
ス出口端を開口すると共に、排気導入管の各区画
室貫通部分に多数の小孔を穿設し、排気導入管が
貫通し又はそのガス出口端が開口した区画室を画
成する仕切板に夫々導管を設けてこれ等区画室を
拡張室とし、排気導出管を前記排気導入管のガス
出口端が開口した区画室内に貫入させると共に、
排気導出管のガス入口端を閉塞し且つ前記貫入部
分に多数の小孔を穿設したことを特徴とする内燃
機関用消音器。 A silencer for an internal combustion engine, comprising an outer cylinder whose both ends are closed with end plates and whose interior is divided into a plurality of compartments by a partition plate, and an exhaust inlet pipe and an exhaust outlet pipe that communicate the inside and outside of the outer cylinder. The exhaust gas introduction pipe is passed through at least one compartment and its gas outlet end is opened to the second and subsequent compartments, and a large number of small holes are bored in the portion of the exhaust gas introduction pipe that penetrates each compartment. , a conduit is provided in each partition plate defining a compartment through which an exhaust inlet pipe passes or whose gas outlet end is open, and these compartments are used as expansion chambers, and an exhaust outlet pipe is connected to the gas outlet end of the exhaust inlet pipe. Infiltrate the opening into the compartment, and
1. A silencer for an internal combustion engine, characterized in that a gas inlet end of an exhaust outlet pipe is closed, and a number of small holes are bored in the penetrated portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18348585U JPH036806Y2 (en) | 1985-11-28 | 1985-11-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18348585U JPH036806Y2 (en) | 1985-11-28 | 1985-11-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6290916U JPS6290916U (en) | 1987-06-10 |
| JPH036806Y2 true JPH036806Y2 (en) | 1991-02-20 |
Family
ID=31130265
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18348585U Expired JPH036806Y2 (en) | 1985-11-28 | 1985-11-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH036806Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6272367B2 (en) * | 2016-01-21 | 2018-01-31 | 本田技研工業株式会社 | Muffler structure of saddle-ride type vehicle |
-
1985
- 1985-11-28 JP JP18348585U patent/JPH036806Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6290916U (en) | 1987-06-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5959263A (en) | Bypass muffler | |
| JPH0712650Y2 (en) | Engine exhaust silencer | |
| US4192403A (en) | Muffler for internal combustion engines | |
| JPS63131815A (en) | Noise eliminator | |
| JP4505114B2 (en) | Catalyst muffler | |
| JPH036806Y2 (en) | ||
| JP2002303117A (en) | Muffler for internal combustion engine | |
| JPH1122444A (en) | Control type muffler | |
| JPH0291410A (en) | Control-type muffler | |
| JPH11315712A (en) | Exhaust muffler for automobile | |
| JPH0444808Y2 (en) | ||
| JPS5943458Y2 (en) | Silencer | |
| US4674277A (en) | Secondary air supply system for an engine exhaust gas purifying system | |
| JPS60132014A (en) | Car muffler | |
| SU1064022A1 (en) | Ic engine muffler | |
| KR20190036829A (en) | The structure of exhaust silencer | |
| JPH0219285B2 (en) | ||
| JPH0141852Y2 (en) | ||
| KR19980029743A (en) | Silencer Structure of Automobile Exhaust System | |
| JPH0610648A (en) | Silencer for internal combustion engine | |
| RU2224897C2 (en) | Muffler for internal combustion engine | |
| JPH036804Y2 (en) | ||
| JPS6040813Y2 (en) | Silencer | |
| JPS6246805Y2 (en) | ||
| KR0172070B1 (en) | Sub-muffler for exhaust apparatus |