JP2000054822A - Muffler - Google Patents
MufflerInfo
- Publication number
- JP2000054822A JP2000054822A JP10223077A JP22307798A JP2000054822A JP 2000054822 A JP2000054822 A JP 2000054822A JP 10223077 A JP10223077 A JP 10223077A JP 22307798 A JP22307798 A JP 22307798A JP 2000054822 A JP2000054822 A JP 2000054822A
- Authority
- JP
- Japan
- Prior art keywords
- wall
- exhaust gas
- end wall
- muffler
- exhaust
- 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
Landscapes
- Exhaust Silencers (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、主として車両用エ
ンジンの排気系に介設する消音器であって、通常は、消
音器内の複数の消音室を介して第１排気流出管に排気ガ
スを流し、消音器本体内の排気ガス圧が所定圧に上昇し
た際には、第２排気流出管にも排気ガスを流すようにし
たものに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a silencer provided mainly in an exhaust system of a vehicle engine, and usually, an exhaust gas is supplied to a first exhaust outlet pipe through a plurality of silencers in the silencer. And when the exhaust gas pressure in the silencer body rises to a predetermined pressure, the exhaust gas also flows to the second exhaust outlet pipe.
【０００２】[0002]
【従来の技術】従来、この種の消音器として、筒状のシ
ェルとシェルの一端を閉塞する第１端壁とシェルの他端
を閉塞する第２端壁とで構成した消音器本体に、第１端
壁を通して排気流入管と、第２端壁を通して第１と第２
の１対の排気流出管とを挿入すると共に、消音器本体内
に、排気流入管からの排気ガスを第１排気流出管に導く
経路に介在される複数の消音室と、これら消音室のうち
の所定の消音室に排気ガス圧が所定圧以上になったとき
に開く制御バルブを介して連通する第１端壁側の連通室
とを設け、該連通室に第２排気流出管を連通させ、所定
の消音室の排気ガス圧が所定圧以上になったときに、制
御バルブと連通室とを介して第２排気流出管に排気ガス
を流すようにしたものが知られている。2. Description of the Related Art Conventionally, as a silencer of this type, a silencer body composed of a cylindrical shell, a first end wall closing one end of the shell, and a second end wall closing the other end of the shell, includes: Exhaust inlet pipes through the first end wall, and first and second exhaust pipes through the second end wall.
And a plurality of muffle chambers interposed in a path for guiding exhaust gas from the exhaust inflow pipe to the first exhaust / outflow pipe, and a pair of muffler chambers. And a communication chamber on the first end wall side, which communicates via a control valve which opens when the exhaust gas pressure becomes equal to or higher than a predetermined pressure, and a second exhaust outlet pipe is connected to the communication chamber. There is known a configuration in which when the exhaust gas pressure in a predetermined silencing chamber becomes equal to or higher than a predetermined pressure, exhaust gas is caused to flow to a second exhaust outlet pipe via a control valve and a communication chamber.
【０００３】このものでは、シェル内に第１端壁に対し
間隔を存してセパレータを設け、第１端壁とセパレータ
との間の室を連通室に構成している。In this case, a separator is provided in the shell at an interval from the first end wall, and a chamber between the first end wall and the separator is formed as a communication chamber.
【０００４】[0004]
【発明が解決しようとする課題】上記従来例のもので
は、連通室は筒状のシェル内をセパレータで区劃するこ
とにより構成されるため、単なる排気ガスの流通路であ
りながら大きな容積を有することになり、消音器内の消
音室のための容積がその分減少し、消音器を大形化しな
いと消音性能が低下してしまう。In the above-mentioned prior art, since the communication chamber is formed by partitioning the inside of the cylindrical shell with a separator, the communication chamber has a large volume despite being a simple exhaust gas flow passage. As a result, the volume for the muffling chamber in the muffler is reduced by that amount, and the muffling performance is reduced unless the muffler is enlarged.
【０００５】本発明は、以上の点に鑑み、消音性能を低
下させることなく小形化できるようにした消音器を提供
することを課題としている。[0005] In view of the above, it is an object of the present invention to provide a muffler that can be downsized without deteriorating the muffling performance.
【０００６】[0006]
【課題を解決するための手段】上記課題を解決すべく、
筒状のシェルとシェルの一端を閉塞する第１端壁とシェ
ルの他端を閉塞する第２端壁とで構成した消音器本体
に、第１端壁を通して排気流入管と、第２端壁を通して
第１と第２の１対の排気流出管とを挿入すると共に、消
音器本体内に、排気流入管からの排気ガスを第１排気流
出管に導く経路に介在される複数の消音室と、これら消
音室のうちの所定の消音室に排気ガス圧が所定圧以上に
なったときに開く制御バルブを介して連通する第１端壁
側の連通室とを設け、該連通室に第２排気流出管を連通
させる消音器において、本発明の第１の特徴によれば、
第１端壁の一部分を内壁と外壁とから成る中空の２重壁
構造に構成し、内壁に、制御バルブを組み付けると共に
第２排気流出管の接続穴を形成して、内壁と外壁との間
の空隙を連通室に構成し、また、本発明の第２の特徴に
よれば、第１端壁を内壁と外壁とから成る２重壁構造と
して、内壁の外周縁部と外壁の外周縁部とを重ね合わせ
てシェルの一端に固着すると共に、内壁と外壁との間の
一部分に空隙を形成し、内壁の該空隙に面する部分に、
制御バルブを組み付けると共に第２排気流出管の接続穴
を形成して、該空隙を連通室に構成している。Means for Solving the Problems In order to solve the above problems,
An exhaust inflow pipe passing through the first end wall and a second end wall to a silencer main body including a cylindrical shell, a first end wall closing one end of the shell, and a second end wall closing the other end of the shell; And a pair of first and second exhaust gas outflow pipes are inserted through the plurality of muffler chambers, and a plurality of muffling chambers interposed in the muffler main body in a path for guiding exhaust gas from the exhaust gas inflow pipe to the first exhaust gas outflow pipe. A communication chamber on the first end wall side that communicates with a predetermined muffler chamber of these muffler chambers through a control valve that opens when the exhaust gas pressure becomes equal to or higher than a predetermined pressure, and a second muffler chamber is provided in the communication chamber. According to a first feature of the present invention, in a silencer for communicating an exhaust pipe,
A part of the first end wall is formed as a hollow double-walled structure including an inner wall and an outer wall, and a control valve is mounted on the inner wall and a connection hole for the second exhaust outlet pipe is formed. According to a second feature of the present invention, the first end wall has a double wall structure including an inner wall and an outer wall, and the outer peripheral edge of the inner wall and the outer peripheral edge of the outer wall are provided. Are overlapped and fixed to one end of the shell, a gap is formed in a part between the inner wall and the outer wall, and a part of the inner wall facing the gap is
The control valve is assembled and a connection hole for the second exhaust outlet pipe is formed to form the gap as a communication chamber.
【０００７】第１と第２の何れの特徴のものでも、第１
端壁の一部分に連通室が形成されることになり、連通室
の容積を小さくして、消音器を大形化せずに消音室の容
積を充分に確保できる。 かくて、消音性能を低下させ
ずに、コンパクトな消音器を得られる。[0007] Regardless of the first and second features, the first
Since the communication chamber is formed in a part of the end wall, the volume of the communication chamber can be reduced, and the volume of the muffler can be sufficiently secured without increasing the size of the muffler. Thus, a compact silencer can be obtained without deteriorating the silencing performance.
【０００８】[0008]
【発明の実施の形態】図１は内燃機関の排気系の途中に
介設される消音器を示している。 この消音器は、筒状
のシェル１１と、シェル１１の一端を閉塞する第１端壁
１２と、シェル１１の他端を閉塞する第２端壁１３とで
構成される消音器本体１内に、第１と第２の１対のセパ
レータ１４、１５を設け、消音器本体１内の空間を、第
１端壁１２と第１セパレータ１４との間の第１消音室１
ａと、第１セパレータ１４と第２セパレータ１５との間
の第２消音室１ｂと、第２セパレータ１５と第２端壁１
３との間の第３消音室１ｃとに区劃している。FIG. 1 shows a silencer interposed in the exhaust system of an internal combustion engine. The muffler includes a muffler main body 1 including a cylindrical shell 11, a first end wall 12 closing one end of the shell 11, and a second end wall 13 closing the other end of the shell 11. , A first and second pair of separators 14 and 15 are provided, and the space in the muffler main body 1 is divided into a first muffler chamber 1 between the first end wall 12 and the first separator 14.
a, the second silencing chamber 1b between the first separator 14 and the second separator 15, the second separator 15 and the second end wall 1
3 and a third sound deadening room 1c.
【０００９】そして、消音器本体１に、第１端壁１２を
通して排気流入管２を挿入すると共に、第２端壁１３を
通して第１排気流出管３を挿入し、排気流入管２からの
排気ガスが前記複数の消音室１ａ、１ｂ、１ｃを介して
第１排気流出管３に流れるようにしている。The exhaust gas inflow pipe 2 is inserted into the muffler main body 1 through the first end wall 12 and the first exhaust gas outflow pipe 3 is inserted through the second end wall 13, so that the exhaust gas from the exhaust gas inflow pipe 2 is removed. Flows into the first exhaust / outflow pipe 3 through the plurality of sound deadening chambers 1a, 1b, 1c.
【００１０】本実施形態では、排気流入管２を第１セパ
レータ１４と第２セパレータ１５とに貫通させて第３消
音室１ｃに連通させると共に、第１排気流出管３を第２
セパレータ１５と第１セパレータ１４とに貫通させて第
１消音室１ａに連通させ、更に、消音器本体１内に、第
１セパレータ１４と第２セパレータ１５とに貫通して第
１消音室１ａと第３消音室１ｃとを連通するインナパイ
プ１６を設け、排気流入管２から第３消音室１ｃに流入
する排気ガスがインナパイプ１６と第１消音室１ａとを
介して第１排気流出管３に流れるようにしている。 ま
た、排気流入管２の第２消音室１ｂ部分の管壁及びイン
ナーパイプ１６の第２消音室１ｂ部分の管壁に夫々多数
の透孔２ａ、１６ａを形成し、排気流入管２からの排気
ガスの一部が第２消音室１ｂとインナパイプ１６とを介
して第１排気流出管３に流れるようにしている。In this embodiment, the exhaust gas inflow pipe 2 penetrates through the first separator 14 and the second separator 15 to communicate with the third silencer 1c, and the first exhaust gas outflow pipe 3 is connected to the second
The first muffler 1a penetrates through the separator 15 and the first separator 14 and communicates with the first muffler 1a. The muffler main body 1 further penetrates the first muffler 14 and the second separator 15 into the first muffler 1a. An inner pipe 16 communicating with the third muffler chamber 1c is provided, and the exhaust gas flowing into the third muffler chamber 1c from the exhaust inflow pipe 2 passes through the inner pipe 16 and the first muffler chamber 1a. So that it flows to Also, a large number of through holes 2a, 16a are formed in the pipe wall of the second silencing chamber 1b of the exhaust inflow pipe 2 and the pipe wall of the second silencing chamber 1b of the inner pipe 16, respectively. A part of the gas is caused to flow to the first exhaust outflow pipe 3 via the second silencing chamber 1b and the inner pipe 16.
【００１１】ところで、排気ガスを第１排気流出管３の
みから排出したのでは内燃機関の高速回転に伴って排気
流入管２から多量の排気ガスが流入すると、消音室１
ａ、１ｂ、１ｃ内の排気ガス圧が高くなり、ひいては、
内燃機関の出力が低下することになる。By the way, if the exhaust gas is exhausted only from the first exhaust outflow pipe 3, when a large amount of exhaust gas flows in from the exhaust inflow pipe 2 with the high-speed rotation of the internal combustion engine, the noise reduction chamber 1
The exhaust gas pressure in a, 1b, 1c increases, and as a result,
The output of the internal combustion engine will decrease.
【００１２】そこで、消音器本体１に第２端壁１３を通
して第２排気流出管４を挿入すると共に、第１端壁１２
側に、第１消音室１ａ内の排気ガス圧が所定圧（例えば
１５〜３０ｍｍＨｇ）以上になったときに開く制御バル
ブ５を介して第１消音室１ａに連通する連通室１ｄを設
けて、第２排気流出管４を連通室１ｄに連通させ、排気
ガス圧が所定圧以上になったときは、第１消音室１ａに
流入した排気ガスの一部が制御バルブ５と連通室１ｄと
を介して第２排気流出管４に流れ、該第２排気流出管４
からも排気ガスが排出されるようにしている。Therefore, the second exhaust / outflow pipe 4 is inserted into the muffler main body 1 through the second end wall 13 and the first end wall 12
A communication chamber 1d communicating with the first muffler chamber 1a through a control valve 5 that opens when the exhaust gas pressure in the first muffler chamber 1a becomes equal to or higher than a predetermined pressure (for example, 15 to 30 mmHg); The second exhaust outlet pipe 4 is communicated with the communication chamber 1d, and when the exhaust gas pressure becomes equal to or higher than a predetermined pressure, a part of the exhaust gas flowing into the first muffler chamber 1a communicates with the control valve 5 and the communication chamber 1d. Through the second exhaust outlet pipe 4 through the second exhaust outlet pipe 4.
Exhaust gas is also discharged from
【００１３】ここで、連通室１ｄでの消音作用は左程必
要とせず、消音器を大形化せずに消音室１ａ、１ｂ、１
ｃの容積を大きく確保して消音性能を向上させるには、
連通室１ｄの容積を小さくすることが望まれる。Here, the muffling function in the communication room 1d does not need to be as far to the left as possible, and the muffler 1a, 1b, 1
To secure a large volume of c and improve the noise reduction performance,
It is desired to reduce the volume of the communication chamber 1d.
【００１４】そこで、本実施形態では、第１端壁１２の
一部分に外方に膨出する膨出部１２ａを形成すると共
に、第１端壁１２の内面に膨出部１２ａを覆う蓋板１２
ｂを全周溶接で取付け、第１端壁１２の該一部分を、蓋
板１２ｂを内壁、膨出部１２ａを外壁とする中空の２重
壁構造に構成し、蓋板１２ｂに制御バルブ５を組付ける
と共に第２排気流出管４の接続穴４ａを形成して、２重
壁間の空隙を連通室１ｄに構成している。Therefore, in the present embodiment, a bulging portion 12a that bulges outward is formed in a part of the first end wall 12, and a lid plate 12 that covers the bulging portion 12a is formed on the inner surface of the first end wall 12.
b is attached by full circumference welding, the part of the first end wall 12 is formed into a hollow double-walled structure in which the lid plate 12b is an inner wall and the bulging portion 12a is an outer wall, and the control valve 5 is mounted on the lid plate 12b. At the same time, the connection hole 4a of the second exhaust / outflow pipe 4 is formed to form a gap between the double walls in the communication chamber 1d.
【００１５】これによれば、第１端壁１２の一部分で可
及的小容積の連通室１ｄを形成でき、消音器本体１内の
消音室１ａ、１ｂ、１ｃのための容積を大きく確保し
て、消音器を大形化せずに消音性能を向上させることが
できる。According to this, the communication chamber 1d having the smallest possible volume can be formed by a part of the first end wall 12, and a large volume for the muffling chambers 1a, 1b, 1c in the muffler main body 1 is secured. Thus, the silencing performance can be improved without increasing the size of the silencer.
【００１６】制御バルブ５は、図２に示す如く、蓋板１
２ｂに接続穴４ａの下側に隣接させて形成した、第１消
音室１ａに連通する左右１対の弁孔５ａ、５ａと、両弁
孔５ａ、５ａを閉じる弾性的に撓み変形可能な１対の板
状弁５ｂ、５ｂとで構成されている。 各板状弁５ｂ
は、弁孔５ａの下側の孔縁部に、該各板状弁５ｂの下端
部において、板状弁５ｂの過度の撓みを規制するストッ
パ５ｃと共にねじ５ｄで固定されている。 そして、各
弁孔５ａの上側及び左右の孔縁部に板状弁５ｂを囲うバ
ーリング部を形成し、常時は板状弁５ｂにより弁孔５ａ
が閉塞されるようにしている。The control valve 5 is, as shown in FIG.
A pair of left and right valve holes 5a, 5a communicating with the first muffler chamber 1a and formed to be adjacent to the lower side of the connection hole 4a at the lower side of the connection hole 4a, and an elastically deformable one closing both valve holes 5a, 5a. It is composed of a pair of plate-shaped valves 5b, 5b. Each plate valve 5b
Is fixed to the lower edge of the valve hole 5a with a screw 5d at the lower end of each of the plate valves 5b together with a stopper 5c for restricting excessive bending of the plate valve 5b. A burring portion surrounding the plate-shaped valve 5b is formed on the upper side and the left and right hole edges of each valve hole 5a.
Is closed.
【００１７】第１消音室１ａ内の排気ガス圧が高くなる
と、板状弁５ｂが排気ガス圧に押されて外方に撓み、排
気ガス圧が所定圧以上になったところで板状弁５ｂの自
由端たる上端部が弁孔５ａから抜け出て弁孔５ａが開放
され、排気ガスが弁孔５ａから連通室１ｄに流入して第
２排気流出管４に流れる。 この際、板状弁５ｂは排気
ガスの流れを接続穴４ａ側に向けるように撓むから、排
気ガスは弁孔５ａから第２排気流出管４にスムーズに流
れる。 尚、接続穴４ａは、弁孔５ａ、５ａの並列方向
たる左右方向に長手の長穴状に形成されており、第２排
気流出管４の端部を左右方向に拡張して接続穴４ａに嵌
合固定している。When the exhaust gas pressure in the first silencing chamber 1a increases, the plate-like valve 5b is pushed by the exhaust gas pressure and bends outward, and when the exhaust gas pressure exceeds a predetermined pressure, the plate-like valve 5b is closed. The upper end, which is a free end, comes out of the valve hole 5a to open the valve hole 5a, and the exhaust gas flows into the communication chamber 1d from the valve hole 5a and flows to the second exhaust outlet pipe 4. At this time, since the plate-shaped valve 5b bends so as to direct the flow of the exhaust gas toward the connection hole 4a, the exhaust gas flows smoothly from the valve hole 5a to the second exhaust outlet pipe 4. In addition, the connection hole 4a is formed in the shape of a long hole elongated in the left-right direction, which is a parallel direction of the valve holes 5a, 5a, and the end of the second exhaust outlet pipe 4 is expanded in the left-right direction to form the connection hole 4a. Fitted and fixed.
【００１８】ところで、上記第１実施形態では、第１端
壁１２の内面に蓋板１２ｂを取付けて、第１端壁１２の
一部分を中空の２重壁構造としたが、図３に示す第２実
施形態の如く、第１端壁１２の外面に、第１端壁１２の
一部分を空隙を存して覆う蓋板１２ｃを全周溶接で取付
けて、第１端壁１２の該一部分を、第１端壁１２自体を
内壁、蓋板１２ｃを外壁とする中空の２重壁構造として
も良い。 この場合、蓋板１２ｃで覆われる第１端壁１
２の部分に、上記第１実施形態と同様の制御バルブ５を
組付けると共に第２排気流出管４の接続穴４ａを形成し
て、２重壁間の空隙を連通室１ｄに構成する。In the first embodiment, the cover plate 12b is attached to the inner surface of the first end wall 12, and a part of the first end wall 12 has a hollow double wall structure. As in the second embodiment, a lid plate 12c that covers a part of the first end wall 12 with a gap is attached to the outer surface of the first end wall 12 by welding all around, and the part of the first end wall 12 is The first end wall 12 itself may be a hollow double-walled structure having an inner wall and the lid plate 12c as an outer wall. In this case, the first end wall 1 covered with the lid plate 12c
A control valve 5 similar to that of the first embodiment is attached to the portion 2 and a connection hole 4a of the second exhaust / outflow pipe 4 is formed to form a gap between the double walls in the communication chamber 1d.
【００１９】また、図４に示す如く第３実施形態のよう
に、第１端壁１２を内壁１２ｄと外壁１２ｅとから成る
２重壁構造として、内壁１２ｄの外周縁部と外壁１２ｅ
の外周縁部とを重ね合わせてシェル１１の一端に巻締め
で固着すると共に、内壁１２ｄと外壁１２ｅとの間の一
部分に空隙を形成し、内壁１２ｄの該空隙に面する部分
に、上記実施形態と同様の制御バルブ５を組付けると共
に第２排気流出管４の接続穴４ａを形成して、該空隙を
連通室１ｄに構成しても良い。As shown in FIG. 4, as in the third embodiment, the first end wall 12 has a double wall structure including an inner wall 12d and an outer wall 12e, and the outer peripheral edge of the inner wall 12d and the outer wall 12e.
The outer peripheral edge of the inner wall 12d is overlapped and fixed to one end of the shell 11 by winding, and a gap is formed in a part between the inner wall 12d and the outer wall 12e. A control valve 5 similar to that in the embodiment may be attached, and a connection hole 4a of the second exhaust / outflow pipe 4 may be formed to form the gap in the communication chamber 1d.
【００２０】これによれば、上記実施形態の如く第１端
壁１２に蓋板１ｂ、１ｃを全周溶接する必要がなく、組
立が容易になる。 また、内壁１２ｄと外壁１２ｅと
は、少なくとも両者の外周縁部において互いに重ね合わ
されるから、内外壁１２ｄ、１２ｅ間に形成される連通
室１ｄの容積は、第１端壁とシェル内のセパレータとの
間に形成する従来の連通室よりも小さくでき、且つ、シ
ェル内に連通室用のセパレータを取付ける必要がないた
め、従来のものより組立が容易になる。According to this, it is not necessary to weld the cover plates 1b, 1c to the first end wall 12 over the entire circumference as in the above-described embodiment, and the assembly is facilitated. Further, since the inner wall 12d and the outer wall 12e are overlapped with each other at least at the outer peripheral edges thereof, the volume of the communication chamber 1d formed between the inner and outer walls 12d and 12e is equal to the first end wall and the separator in the shell. Since it can be made smaller than the conventional communication chamber formed between them and there is no need to mount a separator for the communication chamber in the shell, assembly becomes easier than the conventional one.
【００２１】尚、上記の第１〜第３実施形態では、第１
消音室１ａ内の排気ガスの一部を制御バルブ５と連通室
１ｄとを介して第２排気流出管４から排出しているが、
第１セパレータ１４に穴を設けて該穴と弁孔５ａとを第
２のインナーパイプで連通し、第２消音室１ｂ内の排気
ガスの一部を第２のインナーパイプと制御バルブ５と連
通室１ｄとを介して第２排気流出管４から排出するよう
に構成しても良い。In the first to third embodiments, the first
Part of the exhaust gas in the silencing chamber 1a is exhausted from the second exhaust outlet pipe 4 through the control valve 5 and the communication chamber 1d.
A hole is provided in the first separator 14, the hole and the valve hole 5a are communicated with the second inner pipe, and a part of the exhaust gas in the second muffler chamber 1b is communicated with the second inner pipe and the control valve 5. It may be configured to discharge from the second exhaust outlet pipe 4 through the chamber 1d.
【００２２】[0022]
【発明の効果】以上の説明から明らかなように、本発明
によれば、第１端壁に連通室を形成できるため、連通室
の容積を小さくして消音室のための容積を大きく確保で
き、消音性能を低下させずに、消音器の小形化を図れ
る。As is apparent from the above description, according to the present invention, since the communication chamber can be formed in the first end wall, the volume of the communication chamber can be reduced and the volume for the sound deadening chamber can be increased. The size of the muffler can be reduced without reducing the muffling performance.
【図１】 本発明の連通室を備える消音器の第１実施形
態の截断側面図FIG. 1 is a cutaway side view of a first embodiment of a silencer including a communication chamber according to the present invention.
【図２】 第１実施形態における蓋板の拡大平面図FIG. 2 is an enlarged plan view of a lid plate according to the first embodiment.
【図３】 第２実施形態の部分拡大截断側面図FIG. 3 is a partially enlarged cutaway side view of the second embodiment.
【図４】 第３実施形態の部分拡大截断側面図FIG. 4 is a partially enlarged cut-away side view of the third embodiment.
１ 消音器本体 １１ シェル １２ 第１端壁 １３ 第２端
壁 １ａ 第１消音室 １ｂ 第２消
音室 １ｃ 第３消音室 １ｄ 連通室 ２ 排気流入管 ３ 第１排気流出管 ４ 第２排気流出管 ４ａ 接続穴 ５ 制御バルブDESCRIPTION OF SYMBOLS 1 Silencer main body 11 Shell 12 1st end wall 13 2nd end wall 1a 1st silence room 1b 2nd silence room 1c 3rd silence room 1d Communication room 2 Exhaust inflow pipe 3 First exhaust outflow pipe 4 Second exhaust outflow pipe 4a Connection hole 5 Control valve
Claims (2)
第１端壁とシェルの他端を閉塞する第２端壁とで構成し
た消音器本体に、第１端壁を通して排気流入管と、第２
端壁を通して第１と第２の１対の排気流出管とを挿入す
ると共に、消音器本体内に、排気流入管からの排気ガス
を第１排気流出管に導く経路に介在される複数の消音室
と、これら消音室のうちの所定の消音室に排気ガス圧が
所定圧以上になったときに開く制御バルブを介して連通
する第１端壁側の連通室とを設け、該連通室に第２排気
流出管を連通させるものにおいて、第１端壁の一部分を
内壁と外壁とから成る中空の２重壁構造に構成し、内壁
に、制御バルブを組み付けると共に第２排気流出管の接
続穴を形成して、内壁と外壁との間の空隙を連通室に構
成することを特徴とする消音器。An exhaust inflow pipe is provided through a first end wall to a muffler body including a cylindrical shell, a first end wall closing one end of the shell, and a second end wall closing the other end of the shell. , Second
A pair of first and second exhaust gas outflow pipes are inserted through the end wall, and a plurality of silencers are provided in the muffler main body and interposed in a path for guiding exhaust gas from the exhaust gas inflow pipe to the first exhaust gas outflow pipe. A communication chamber on the first end wall side that communicates with a predetermined muffler chamber of these muffler chambers via a control valve that opens when the exhaust gas pressure becomes equal to or higher than a predetermined pressure. In the communication between the second exhaust outlet pipe, a part of the first end wall is formed into a hollow double-walled structure including an inner wall and an outer wall, and a control valve is mounted on the inner wall and a connection hole of the second exhaust outlet pipe is provided. Wherein a gap between the inner wall and the outer wall is formed as a communication chamber.
第１端壁とシェルの他端を閉塞する第２端壁とで構成し
た消音器本体に、第１端壁を通して排気流入管と、第２
端壁を通して第１と第２の１対の排気流出管とを挿入す
ると共に、消音器本体内に、排気流入管からの排気ガス
を第１排気流出管に導く経路に介在される複数の消音室
と、これら消音室のうちの所定の消音室に排気ガス圧が
所定圧以上になったときに開く制御バルブを介して連通
する第１端壁側の連通室とを設け、該連通室に第２排気
流出管を連通させるものにおいて、第１端壁を内壁と外
壁とから成る２重壁構造として、内壁の外周縁部と外壁
の外周縁部とを重ね合わせてシェルの一端に固着すると
共に、内壁と外壁との間の一部分に空隙を形成し、内壁
の該空隙に面する部分に、制御バルブを組み付けると共
に第２排気流出管の接続穴を形成して、該空隙を連通室
に構成することを特徴とする消音器。2. A muffler body comprising a cylindrical shell, a first end wall closing one end of the shell, and a second end wall closing the other end of the shell. , Second
A pair of first and second exhaust gas outflow pipes are inserted through the end wall, and a plurality of silencers are provided in the muffler main body and interposed in a path for guiding exhaust gas from the exhaust gas inflow pipe to the first exhaust gas outflow pipe. A communication chamber on the first end wall side that communicates with a predetermined muffler chamber of these muffler chambers via a control valve that opens when the exhaust gas pressure becomes equal to or higher than a predetermined pressure. In the communication of the second exhaust pipe, the first end wall has a double wall structure including an inner wall and an outer wall, and the outer peripheral edge of the inner wall and the outer peripheral edge of the outer wall are overlapped and fixed to one end of the shell. At the same time, a gap is formed in a portion between the inner wall and the outer wall, a control valve is assembled in a portion of the inner wall facing the gap, and a connection hole of the second exhaust outlet pipe is formed, and the gap is formed in the communication chamber. A silencer characterized by comprising.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22307798A JP4068726B2 (en) | 1998-08-06 | 1998-08-06 | Silencer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22307798A JP4068726B2 (en) | 1998-08-06 | 1998-08-06 | Silencer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000054822A true JP2000054822A (en) | 2000-02-22 |
| JP4068726B2 JP4068726B2 (en) | 2008-03-26 |
Family
ID=16792487
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22307798A Expired - Fee Related JP4068726B2 (en) | 1998-08-06 | 1998-08-06 | Silencer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4068726B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7789195B2 (en) | 2005-03-11 | 2010-09-07 | Toyota Jidosha Kabushiki Kaisha | Muffler of internal combustion engine |
| CN104389655A (en) * | 2014-10-09 | 2015-03-04 | 海阳奥迪克不锈钢***有限公司 | Automobile muffler |
| CN113482757A (en) * | 2021-08-26 | 2021-10-08 | 浙江青鸟机械有限公司 | Multi-loop silencer on motorcycle |
-
1998
- 1998-08-06 JP JP22307798A patent/JP4068726B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7789195B2 (en) | 2005-03-11 | 2010-09-07 | Toyota Jidosha Kabushiki Kaisha | Muffler of internal combustion engine |
| CN104389655A (en) * | 2014-10-09 | 2015-03-04 | 海阳奥迪克不锈钢***有限公司 | Automobile muffler |
| CN113482757A (en) * | 2021-08-26 | 2021-10-08 | 浙江青鸟机械有限公司 | Multi-loop silencer on motorcycle |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4068726B2 (en) | 2008-03-26 |
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