JP2002129932A - Detachable noise absorption part - Google Patents
Detachable noise absorption partInfo
- Publication number
- JP2002129932A JP2002129932A JP2000324853A JP2000324853A JP2002129932A JP 2002129932 A JP2002129932 A JP 2002129932A JP 2000324853 A JP2000324853 A JP 2000324853A JP 2000324853 A JP2000324853 A JP 2000324853A JP 2002129932 A JP2002129932 A JP 2002129932A
- Authority
- JP
- Japan
- Prior art keywords
- exhaust pipe
- sound absorbing
- outer cylinder
- cylinder
- sound
- 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
Landscapes
- Exhaust Silencers (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、自動車、自動二輪
車等の内燃機関の排気管に装着、脱着することができる
吸音部品に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sound-absorbing component which can be attached to and detached from an exhaust pipe of an internal combustion engine of an automobile, a motorcycle or the like.
【０００２】[0002]
【従来の技術】自動車、自動二輪車等の内燃機関の発生
する排気音は非常に大きく、住宅密集地等では騒音問題
となるため、排気管の直前に、消音器を設置し、これに
排気管を接続している。2. Description of the Related Art Exhaust noise generated by internal combustion engines such as automobiles and motorcycles is very loud, and it causes a noise problem in densely populated houses and the like. Are connected.
【０００３】消音器による騒音低減は、一定の効果を有
するが、内燃機関の暖機運転時においては、自動的にエ
ンジン回転数が高く調節されるため、排気管からの騒音
も非常に高くなっている。The noise reduction by the silencer has a certain effect, but during warm-up operation of the internal combustion engine, the engine speed is automatically adjusted to a high level, so that the noise from the exhaust pipe becomes very high. ing.
【０００４】例えば、住宅密集地において、早朝、ある
いは深夜といった静寂時に、エンジン暖機運転を行う
と、より一層排気音からの騒音が大きく聞こえてしま
い、騒音公害となってしまう。[0004] For example, when the engine is warmed up in a densely populated residential area, such as in the early morning or late at night, the noise from the exhaust noise can be heard more loudly, resulting in noise pollution.
【０００５】しかしながら暖機運転時の騒音は一過性の
ものであり、内燃機関の騒音対策を行おうとすれば、過
大な対策となってしまう虞れがあるため、暖機運転時の
騒音対策については特になされていないのが現状であっ
た。[0005] However, the noise during the warm-up operation is transient, and if an attempt is made to take measures against the noise of the internal combustion engine, there is a possibility that the measures will be excessive. At present, nothing has been done.
【０００６】[0006]
【発明が解決しようとする課題】そこで本発明は、排気
管に直接脱着が容易であるため、暖機運転の開始時に排
気管に装着し、運転開始時には脱着することが可能であ
る吸音部品を開発することを課題とする。Accordingly, the present invention provides a sound absorbing component which can be attached to the exhaust pipe at the start of warm-up operation and can be detached at the start of operation because the exhaust pipe can be easily attached and detached directly to the exhaust pipe. The task is to develop.
【０００７】[0007]
【課題を解決するための手段】かかる課題を解決せんと
して、本発明者は鋭意研究の結果、外筒の内部に吸音材
が充填された吸音部品、また、外筒と内筒との間に吸音
材を充填した吸音部品を開発したものであり、しかして
本発明の要旨は、以下に存する。Means for Solving the Problems In order to solve such problems, the present inventors have conducted intensive studies and as a result, have found that a sound absorbing component in which a sound absorbing material is filled in an outer tube, and that a sound absorbing member is provided between an outer tube and an inner tube. A sound absorbing part filled with a sound absorbing material has been developed, and the gist of the present invention is as follows.
【０００８】外筒と、該外筒に充填された吸音材からな
り、内燃機関の排気管に容易に着脱が可能なことを特徴
とする吸音部品。外筒と内筒からなり、内筒と外筒との
空間に吸音材を充填してなる、内燃機関の排気管に容易
に着脱が可能なことを特徴とする吸音部品。吸音材は、
金属繊維、化学繊維、嵩高性フェルトから選ばれる１種
以上であることを特徴とする上記記載の吸音部品。[0008] A sound-absorbing component comprising an outer cylinder and a sound-absorbing material filled in the outer cylinder, which can be easily attached to and detached from an exhaust pipe of an internal combustion engine. A sound absorbing component comprising an outer cylinder and an inner cylinder, wherein a space between the inner cylinder and the outer cylinder is filled with a sound absorbing material, and which can be easily attached to and detached from an exhaust pipe of an internal combustion engine. The sound absorbing material is
The sound-absorbing component as described above, wherein the component is at least one selected from metal fibers, chemical fibers, and bulky felt.
【０００９】本発明になる吸音部品は外筒、あるいは外
筒と内筒とからなり、この間の空間に吸音材を充填す
る。The sound absorbing component according to the present invention comprises an outer cylinder, or an outer cylinder and an inner cylinder, and a space between them is filled with a sound absorbing material.
【００１０】内筒は、排気管の外径に合わせて装着する
ため、多少の径の大きさが変形可能な材料、構造である
ことが必要である。かつ、暖機運転時は排気管が振動す
るため、この振動を吸収し、なおかつ振動により吸音部
品が外れない様に、締め付け効果を有するものが好まし
い。Since the inner cylinder is mounted in accordance with the outer diameter of the exhaust pipe, it is necessary that the inner cylinder be made of a material or a structure whose diameter is somewhat deformable. In addition, since the exhaust pipe vibrates during the warming-up operation, it is preferable that the exhaust pipe absorb the vibration and have a tightening effect so that the sound absorbing component does not come off due to the vibration.
【００１１】上記の様な条件の内径を構成するものとし
ては、金属製、樹脂製の網状物、金属製、樹脂製のスプ
リング等が例示できる。Examples of the material constituting the inner diameter under the above conditions include a metal or resin net, a metal or resin spring, and the like.
【００１２】外筒は、排気音を外部に漏らさないために
遮音性を有することが必要であり、なおかつ形状保持
性、耐水性、耐熱性を有することが好ましい。The outer cylinder needs to have sound insulation so as not to leak exhaust sound to the outside, and preferably has shape retention, water resistance and heat resistance.
【００１３】上記の様な条件を構成する外筒としては、
アルミニウム、ステンレス鋼板などの金属板製筒、樹脂
製筒、ゴム製筒が例示できる。The outer cylinder that satisfies the above conditions includes:
Examples thereof include metal plate cylinders such as aluminum and stainless steel plates, resin cylinders, and rubber cylinders.
【００１４】外筒の内部に充填する吸音材としては、吸
音効果の高い吸音効果の高いことが必要であり、なおか
つ高温の排気が流れるため、耐熱性を有し熱劣化が起こ
りにくいもの、排気中に含まれる煤がたまり、吸音効果
が低下した場合、水などにより容易に洗浄ができるも
の、取り扱いが容易で安全なものが好ましい。また、外
筒の内部に充填後、簡単に脱落しないように略外筒と同
じ形状に成形することが好ましく、排気管への装着を容
易にするべく、排気管装着口には排気管と略同一径の孔
が開けられていることが好ましい。内筒と外筒との間に
充填する吸音材に求められる特性も、上記外筒内部に充
填される吸音材と同じである。なお、内筒と外筒との間
に充填する場合には、内筒により吸音材を固定するた
め、上記の場合と異なり、外筒形状と略同一の成形は、
必ずしも必要ではない。The sound absorbing material to be filled in the outer cylinder needs to have a high sound absorbing effect and a high sound absorbing effect. In addition, since high-temperature exhaust gas flows, it has heat resistance and is hardly deteriorated by heat. When the soot contained therein accumulates and the sound absorbing effect is reduced, it is preferable that the soot can be easily washed with water or the like and that it is easy and safe to handle. Also, after filling the inside of the outer cylinder, it is preferable that the outer pipe is formed in the same shape as the outer cylinder so that it does not easily fall off. Preferably, holes of the same diameter are provided. The characteristics required of the sound absorbing material filled between the inner cylinder and the outer cylinder are the same as those of the sound absorbing material filled inside the outer cylinder. In addition, when filling between the inner cylinder and the outer cylinder, in order to fix the sound absorbing material by the inner cylinder, unlike the above case, the molding substantially the same as the outer cylinder shape,
It is not necessary.
【００１５】上記の条件を満たす吸音材としては、金属
繊維、ガラス繊維、各種の天然、化学繊維原料から加工
された、不織布、嵩高性フェルト等が例示されるが、特
にアルミニウム繊維、ステンレス繊維等の金属繊維が各
種の条件を満たす上で好ましく使用できる。Examples of the sound absorbing material satisfying the above conditions include metal fibers, glass fibers, nonwoven fabrics and bulky felts processed from various natural and chemical fiber raw materials, and particularly, aluminum fibers, stainless fibers and the like. Can be preferably used in satisfying various conditions.
【００１６】本発明になる吸音部品の、外筒の形状は、
特に制限は無く、通常の円柱形、三角柱、四角柱、多角
形柱、ないしはそれに準じる形状が使用できる。排気管
に装着する側には、装着する排気管の外径よりやや大き
な径の円形の穴が開いており、この穴に排気管を挿入す
る形で吸音部品を装着する。排気の出口側は、排気がな
されるための最小限度の穴があれば良く、網や適当な材
料の通気性のあるフィルターで覆うことも可能である。The shape of the outer cylinder of the sound absorbing component according to the present invention is as follows:
There is no particular limitation, and ordinary columnar, triangular, quadrangular, polygonal, or similar shapes can be used. On the side to be mounted on the exhaust pipe, a circular hole having a diameter slightly larger than the outer diameter of the exhaust pipe to be mounted is opened, and the sound absorbing component is mounted by inserting the exhaust pipe into this hole. The outlet side of the exhaust air only needs to have a minimum hole for exhaust air, and can be covered with a net or a breathable filter made of a suitable material.
【００１７】[0017]
【発明の実施の形態】本発明の理解に供するため、以下
に実施例を記載する。いうまでもなく、本発明は以下の
実施例に限定されるものではない。BEST MODE FOR CARRYING OUT THE INVENTION Examples will be described below for better understanding of the present invention. Needless to say, the present invention is not limited to the following examples.
【００１８】[0018]
【実施例１】外筒にはステンレス製板を円柱状に加工し
たものを使用し、外筒の内側に、略外筒と同一径に成形
し、排気管挿入口は排気管の外径と略同一径の孔を穿っ
たアルミニウム繊維の成形集合体を充填し、吸音部品１
を得た。Embodiment 1 A stainless steel plate processed into a cylindrical shape is used for the outer cylinder, and the inside of the outer cylinder is formed to have substantially the same diameter as the outer cylinder. A sound-absorbing part 1 is filled with a molded aggregate of aluminum fibers having holes of substantially the same diameter.
I got
【００１９】[0019]
【実施例２】内筒には樹脂製の網を円柱状に加工したも
の、外筒にはステンレス製板を円柱状に加工したものを
使用し、外筒の内側にアルミニウム繊維の集合体を充填
し、これを内筒を外筒に挿入しながら内筒と外筒との間
に押さえ入れ、外筒と内筒との間の空間に吸音材が充填
された吸音部品２を得た。Embodiment 2 A resin mesh processed into a cylindrical shape is used for the inner cylinder, a stainless steel plate processed into a cylindrical shape is used as the outer cylinder, and an aggregate of aluminum fibers is provided inside the outer cylinder. This was filled, and this was pressed down between the inner cylinder and the outer cylinder while inserting the inner cylinder into the outer cylinder, thereby obtaining a sound absorbing component 2 in which the space between the outer cylinder and the inner cylinder was filled with a sound absorbing material.
【００２０】[0020]
【実施例３】内筒にはステンレス製の網を円柱状に加工
したもの、外筒には樹脂製板を円柱状に加工したものを
使用し、外筒の内側にアラミド繊維の集合体を充填し、
これを内筒を外筒に挿入しながら内筒と外筒との間に押
さえ入れ、外筒と内筒との間の空間に吸音材が充填され
た吸音部品３を得た。[Embodiment 3] A stainless steel mesh processed into a cylindrical shape is used for the inner cylinder, a resin plate processed into a cylindrical shape is used as the outer cylinder, and an aggregate of aramid fibers is used inside the outer cylinder. Filling,
This was pressed down between the inner cylinder and the outer cylinder while inserting the inner cylinder into the outer cylinder, to obtain a sound absorbing component 3 in which a space between the outer cylinder and the inner cylinder was filled with a sound absorbing material.
【００２１】[0021]
【試験方法】吸音部品１〜３を排気管に装着した、同じ
型の自動車のエンジンを始動させ、エンジン回転数を次
第に上げていった時に発生する車外騒音を、排気管後方
１ｍに設置したマイクロフォンにより測定した。[Test method] A microphone installed 1 m behind the exhaust pipe, when the engine of the same type of car with sound absorbing parts 1 to 3 attached to the exhaust pipe is started and the engine speed is gradually increased. Was measured by
【００２２】[0022]
【結果】実施例１から実施例３においては、吸音部品を
装着しなかった状態と比較して、何れも３〜５ｄＢの騒
音低減効果が認められた。[Results] In Examples 1 to 3, a noise reduction effect of 3 to 5 dB was observed in all cases as compared with the state where no sound absorbing parts were mounted.
【００２３】[0023]
【発明の効果】本発明になる吸音部品は、構造が単純で
低コストで製造でき、内径と外径のサイズを数種類変え
たものを用意するだけで、いかなる種類の自動車、自動
二輪車等の内燃機関にも装着対応が可能であり、装着、
脱着は極めて容易であるため誰にでも簡単に使用でき、
暖機運転開始時に本吸音部品を排気管に装着し、暖機運
転が終了して運転を開始する時に脱着すれば、暖機運転
時の騒音低減効果は非常に顕著であり、騒音問題解決に
寄与できるものである。また内筒と外筒の分離も容易で
あるので、内筒を抜き取り、内部に充填されている吸音
材を洗浄することで、吸音効果の回復を図ることができ
る。The sound-absorbing component according to the present invention has a simple structure, can be manufactured at low cost, and can be manufactured by changing the inner diameter and the outer diameter of several types. Institutions can also be installed,
It is very easy to put on and take off, so anyone can use it easily,
If this sound-absorbing part is attached to the exhaust pipe at the start of warm-up operation, and it is removed at the end of warm-up operation and operation starts, the noise reduction effect at warm-up operation is very remarkable, Can contribute. Further, since the inner cylinder and the outer cylinder can be easily separated, the sound absorbing effect can be recovered by extracting the inner cylinder and cleaning the sound absorbing material filled therein.
Claims (3)
り、内燃機関の排気管に容易に着脱が可能なことを特徴
とする吸音部品。1. A sound-absorbing component comprising an outer cylinder and a sound-absorbing material filled in the outer cylinder, wherein the sound-absorbing component is easily removable from an exhaust pipe of an internal combustion engine.
に吸音材を充填してなる、内燃機関の排気管に容易に着
脱が可能なことを特徴とする吸音部品。2. A sound absorbing component comprising an outer cylinder and an inner cylinder, wherein a space between the inner cylinder and the outer cylinder is filled with a sound absorbing material, and which can be easily attached to and detached from an exhaust pipe of an internal combustion engine.
ェルトから選ばれる１種以上であることを特徴とする、
請求項１に記載された吸音部品。3. The sound absorbing material is at least one selected from metal fibers, chemical fibers, and bulky felts.
The sound-absorbing component according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000324853A JP2002129932A (en) | 2000-10-25 | 2000-10-25 | Detachable noise absorption part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000324853A JP2002129932A (en) | 2000-10-25 | 2000-10-25 | Detachable noise absorption part |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002129932A true JP2002129932A (en) | 2002-05-09 |
Family
ID=18802313
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000324853A Pending JP2002129932A (en) | 2000-10-25 | 2000-10-25 | Detachable noise absorption part |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2002129932A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005256839A (en) * | 2004-03-12 | 2005-09-22 | Man B & W Diesel Gmbh | Reciprocating piston internal combustion engine |
-
2000
- 2000-10-25 JP JP2000324853A patent/JP2002129932A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005256839A (en) * | 2004-03-12 | 2005-09-22 | Man B & W Diesel Gmbh | Reciprocating piston internal combustion engine |
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