JPH10184340A - Exhaust noise damping device for automobile - Google Patents
Exhaust noise damping device for automobileInfo
- Publication number
- JPH10184340A JPH10184340A JP9289087A JP28908797A JPH10184340A JP H10184340 A JPH10184340 A JP H10184340A JP 9289087 A JP9289087 A JP 9289087A JP 28908797 A JP28908797 A JP 28908797A JP H10184340 A JPH10184340 A JP H10184340A
- Authority
- JP
- Japan
- Prior art keywords
- exhaust
- exhaust gas
- pipe
- muffler
- inflow pipe
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N1/00—Silencing apparatus characterised by method of silencing
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Silencers (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、自動車エンジンの
外部に排気ガスが排出される際、発生する騒音を低減さ
せる自動車の排気騒音減衰装置に係り、より詳しくは、
排気ガスの膨張比を増大させて排気ガスの排気騒音を低
下させることにより、静かな走行を行なえるようにされ
た自動車の排気騒音減衰装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle exhaust noise attenuating device for reducing noise generated when exhaust gas is exhausted to the outside of a vehicle engine.
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an exhaust noise attenuating device for an automobile, which is capable of running quietly by increasing an expansion ratio of exhaust gas to reduce exhaust noise of the exhaust gas.
【０００２】[0002]
【従来の技術】一般に、図３に示されたように、自動車
の排気騒音減衰装置は、各シリンダーの排気ガスを総合
するように、シリンダーに配設された排気マニホルド１
０と、前記排気マニホルド１０を通過した排気ガスの流
動をガイドするように前記排気マニホルド１０に連結さ
れた排気パイプ２０と、前記排気パイプ２０を通過した
排気ガスの排気騒音を低減させるように排気パイプ２０
の端部に装着された消音器３０と、前記消音器３０から
排出される排気ガスの流路をガイドするよう前記消音器
３０の端部に連結されたテールパイプ５０とからなる。2. Description of the Related Art Generally, as shown in FIG. 3, an exhaust noise attenuating apparatus for a vehicle is provided with an exhaust manifold 1 provided in a cylinder so as to integrate exhaust gas from each cylinder.
0, an exhaust pipe 20 connected to the exhaust manifold 10 to guide the flow of the exhaust gas passing through the exhaust manifold 10, and an exhaust pipe to reduce the exhaust noise of the exhaust gas passing through the exhaust pipe 20. Pipe 20
And a tail pipe 50 connected to an end of the muffler 30 so as to guide a flow path of exhaust gas discharged from the muffler 30.
【０００３】また、消音器３０には、図４に示すように
第１の隔壁部材３６、第２の隔壁部材３７、第３の隔壁
部材３８、第４の隔壁部材３９が立設され、前記第１〜
４の隔壁部材３６，３７，３８，３９により第１のチャ
ンバ３１，第２のチャンバ３２、第３のチャンバ３３、
第４のチャンバ３４、第５のチャンバ３５が画成されて
いる。As shown in FIG. 4, a first partition member 36, a second partition member 37, a third partition member 38, and a fourth partition member 39 are erected on the muffler 30. First to first
The first chamber 31, the second chamber 32, the third chamber 33,
A fourth chamber 34 and a fifth chamber 35 are defined.
【０００４】さらに、前記消音器３０の内部には、図５
に示すように前記排気パイプ２０をへた排気ガスを前記
第５のチャンバ３５に移動されるようガイドする流入管
４０と、前記流入管４０の端部から前記第５のチャンバ
３５に移動された排気ガスを前記第３のチャンバ３３に
移動されるようガイドする第１の管部材４１と、前記第
１の管部材４１の端部から前記第３のチャンバ３３に移
動された排気ガスを前記第１のチャンバ３１に移動され
るようガイドする第２の管部材４２と、前記第２の管部
材４２の端部から前記第１のチャンバ３１に移動された
排気ガスを自動車の外部に吐出されるようガイドする吐
出管４３が配設されている。[0005] Further, inside the silencer 30, FIG.
As shown in FIG. 5, an inflow pipe 40 for guiding the exhaust gas flowing through the exhaust pipe 20 to be moved to the fifth chamber 35, and the exhaust gas was moved from the end of the inflow pipe 40 to the fifth chamber 35. A first pipe member 41 that guides the exhaust gas to be moved to the third chamber 33; and an exhaust gas that is moved from the end of the first pipe member 41 to the third chamber 33 to the third chamber 33. A second pipe member that guides the chamber to be moved to the first chamber; and an exhaust gas that is moved from the end of the second pipe member to the first chamber to the outside of the vehicle. A discharge pipe 43 for guiding the air is provided.
【０００５】[0005]
【発明が解決しようとする課題】ところで、上記のごと
く構成された従来の自動車の排気騒音減衰装置によれ
ば、排気ガスが高温の消音器３０内で移動される場合、
前記消音器３０の断面積と前記流入管４０の断面積との
割合である膨張比が少ないため、膨張比と比例関係にあ
る排気騒音減衰量が低減されることにより、過度の騒音
が発生されるとの問題点があった。By the way, according to the conventional automobile exhaust noise attenuating device constructed as described above, when the exhaust gas is moved in the high temperature silencer 30,
Since the expansion ratio, which is the ratio of the cross-sectional area of the silencer 30 to the cross-sectional area of the inflow pipe 40, is small, excessive noise is generated by reducing the amount of exhaust noise attenuation proportional to the expansion ratio. There was a problem.
【０００６】本発明は上記種々の問題点を解決するため
になされたものであって、本発明の目的は、排気ガスの
膨張比を増大させて排気ガスの排気騒音を低下させるこ
とにより、静かな走行が行なえるようにされた自動車の
排気騒音減衰装置を提供することにある。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned various problems, and an object of the present invention is to increase the expansion ratio of the exhaust gas to reduce the exhaust noise of the exhaust gas, thereby achieving quiet operation. It is an object of the present invention to provide an exhaust noise attenuating device for a motor vehicle capable of performing comfortable running.
【０００７】[0007]
【課題を解決するための手段】上記目的を達成するため
本発明の請求項１に係る自動車の排気騒音減衰装置は、
燃料の燃焼後、エンジンから排出される排気ガスを排気
パイプを通して消音器にガイドし、排気騒音を減衰する
自動車の排気騒音減衰装置において、 消音器には一端
側が排気パイプに連結する流入管が配設され、該流入管
を通して消音器の内部へ流入される排気ガスの膨張比を
一次的に増大させて排気ガスの排気騒音を低減させるよ
うに、前記流入管の他端側に流入管の断面積以下の第１
の減衰部が流入管と一体的に連結され、該第１の減衰部
の外周部には開口が設けられ、該開口には、前記第１の
減衰部に排気ガスが集合されつつ排圧がかかりすぎるの
を防止して円滑に消音器の内部へ流入されるようにする
とともに、膨張比を二次的に増大させることにより排気
騒音減衰量を増大させる第２の減衰部が接続されている
ことを特徴とする。According to a first aspect of the present invention, there is provided a vehicle exhaust noise attenuating apparatus.
After exhausting the fuel, the exhaust gas discharged from the engine is guided to the silencer through the exhaust pipe, and the exhaust noise is attenuated. In the muffler, an inlet pipe is connected to the exhaust pipe at one end. The inflow pipe is cut off at the other end of the inflow pipe so as to temporarily increase the expansion ratio of the exhaust gas flowing into the muffler through the inflow pipe to reduce the exhaust noise of the exhaust gas. 1st area or less
Is integrally connected to the inflow pipe, and an opening is provided in an outer peripheral portion of the first damping portion. Exhaust gas is collected in the opening in the first damping portion and exhaust pressure is reduced. A second damping portion is connected to prevent excessive application and smoothly flow into the silencer, and to increase exhaust noise attenuation by secondarily increasing an expansion ratio. It is characterized by the following.
【０００８】また、本発明の請求項２に係る自動車の排
気騒音減衰装置は、前記第１の減衰部及び第２の減衰部
が、パイプであることを特徴とする。According to a second aspect of the present invention, there is provided a vehicle exhaust noise attenuating device, wherein the first damping portion and the second damping portion are pipes.
【０００９】また、本発明の請求項３に係る自動車の排
気ガス減衰装置は、前記第１の減衰部および第２の減衰
部の断面積の和が、前記流入管の断面積以下であること
を特徴とする。According to a third aspect of the present invention, in the vehicle exhaust gas damping device, the sum of the cross-sectional areas of the first damping portion and the second damping portion is equal to or smaller than the cross-sectional area of the inflow pipe. It is characterized by.
【００１０】[0010]
【発明の実施の形態】以下、本発明による一実施の形態
について添付図面に沿って詳述する。図１は、本発明に
適用される自動車の消音器内で排気ガスが移動される状
態を概略に示す断面図であり、図２は本発明による排気
騒音減衰装置の主要部分を示す斜視図である。なお、前
記図３〜図５と同一の部分には同一の符号を付す。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment according to the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 is a cross-sectional view schematically showing a state in which exhaust gas is moved in a muffler of an automobile applied to the present invention, and FIG. 2 is a perspective view showing a main part of an exhaust noise attenuation device according to the present invention. is there. The same parts as those in FIGS. 3 to 5 are denoted by the same reference numerals.
【００１１】本発明においても、図３に示す従来例と同
様にシリンダーから排出される排気ガスを適当に総合さ
せ得るように自動車の２気筒からのエンジンに排気マニ
ホルド１０が配設されている。そして、前記排気マニホ
ルド１０には、前記排気マニホルド１０を経る排気ガス
の流動をガイドするように排気パイプ２０が装着され、
その内部は、それぞれのシリンダーから排出される排気
ガスの干渉および排出抵抗を防止するように、曲面形状
になっている。In the present invention, similarly to the conventional example shown in FIG. 3, an exhaust manifold 10 is provided in an engine of two cylinders of an automobile so that the exhaust gas discharged from the cylinder can be appropriately integrated. An exhaust pipe 20 is mounted on the exhaust manifold 10 so as to guide the flow of exhaust gas passing through the exhaust manifold 10.
The inside is curved so as to prevent interference and exhaust resistance of exhaust gas discharged from each cylinder.
【００１２】また、前記排気パイプ２０の端部には、前
記排気パイプ２０を通過した排気ガスの排気騒音を低減
させるよう図１に示す消音器６０が装着されている。前
記消音器６０は、図１に示すように第１の隔壁部材６
６、第２の隔壁部材６７、第３の隔壁部材６８、第４の
隔壁部材６９が立設され、前記第１〜４の隔壁部材６
６，６７，６８，６９により第１のチャンバ６１、第２
のチャンバ６２、第３のチャンバ６３、第４のチャンバ
６４、第５のチャンバ６５がそれぞれ画成されている。At the end of the exhaust pipe 20, a muffler 60 shown in FIG. 1 is mounted so as to reduce the exhaust noise of the exhaust gas passing through the exhaust pipe 20. The silencer 60 includes a first partition member 6 as shown in FIG.
6, a second partition member 67, a third partition member 68, and a fourth partition member 69 are erected, and the first to fourth partition members 6 are provided.
6, 67, 68, 69, the first chamber 61, the second
, A third chamber 63, a fourth chamber 64, and a fifth chamber 65 are respectively defined.
【００１３】さらに、前記消音器６０の内部には、前記
排気パイプ２０をへる排気ガスが前記第５のチャンバ６
５の内部へ流動されるようガイドし、前記排気パイプ２
０に一体的に連通可能に接続された流入管８０と、前記
流入管８０の端部から前記第５のチャンバ６５に移動さ
れた排気ガスが前記第３のチャンバ６３を移動されるよ
う排気ガスの流動をガイドする第１の管部材７１と、前
記第１の管部材７１の端部から前記第３のチャンバ６３
に移動された排気ガスが前記第１のチャンバ６１に移動
されるよう排気ガスの流動をガイドする第２の管部材７
２と、前記第２の管部材７２の端部から前記第１のチャ
ンバ６１に移動された排気ガスを自動車の外部に吐出さ
れるようガイドする吐出管７３とが配設されている。Further, the exhaust gas flowing through the exhaust pipe 20 is provided inside the muffler 60 in the fifth chamber 6.
5 and the exhaust pipe 2
And an exhaust gas that is connected to the third chamber 63 so that the exhaust gas moved from the end of the inflow pipe 80 to the fifth chamber 65 is moved through the third chamber 63. A first pipe member 71 for guiding the flow of air through the third chamber 63 from an end of the first pipe member 71.
The second pipe member 7 for guiding the flow of the exhaust gas so that the exhaust gas moved to the first chamber 61 is moved to the first chamber 61.
2 and a discharge pipe 73 for guiding the exhaust gas moved from the end of the second pipe member 72 to the first chamber 61 to the outside of the vehicle.
【００１４】また、前記流入管８０には、前記流入管８
０を通して前記消音器６０の内部へ流入される排気ガス
の膨張比を一次的に増大させて排気ガスの排気騒音を低
下させうるように前記流入管８０の断面積よりは所定値
以下の断面積をもつ第１の減衰部８１が連結されてい
る。さらに、前記第１の減衰部８１の外周面には、排気
ガスの膨張比を二次的に増大させる第２の減衰部が接続
されるよう開口８２が穿設されている。Also, the inflow pipe 80 is provided with the inflow pipe 8.
0, the cross-sectional area of the inflow pipe 80 is smaller than a predetermined value so as to temporarily increase the expansion ratio of the exhaust gas flowing into the silencer 60 and reduce the exhaust noise of the exhaust gas. Are connected to each other. Further, an opening 82 is formed in the outer peripheral surface of the first damping portion 81 so as to be connected to a second damping portion for secondarily increasing the expansion ratio of the exhaust gas.
【００１５】また、前記第１の減衰部８１の開口８２に
は、前記第１の減衰部８１を通して前記消音器６０の内
部へ流入される排気ガスの断面積が縮小されるため、前
記第１の減衰部８１の内部に集合されつつ発生される排
圧が前記第１の減衰部８１にかかり過ぎるのを防止して
円滑に前記消音器６０内へ流入されるようにするととも
に、膨張比を二次的に増大させることにより排気騒音の
減衰量を増大させてより静かな走行ができるようにな
り、かつ、一端部が前記消音器６０の第３のチャンバ６
３内に配設された第２の減衰部８３の他端部に接続され
ている。さらに、前記第１の減衰部８１および第２の減
衰部８３の断面積の和は、前記第１の減衰部８１および
第２の減衰部８３の断面積の和と前記消音器６０の断面
積とのわりあいである膨張比を増大させるように、前記
排気パイプ２０からの排気ガスの流動をガイドする流入
管８０の断面積以下になっている。本例では前記第１の
減衰部および第２の減衰部は、パイプで形成されてい
る。The cross-sectional area of the exhaust gas flowing into the muffler 60 through the first damping portion 81 is reduced in the opening 82 of the first damping portion 81, so that the first The exhaust pressure generated while being collected inside the damping portion 81 is prevented from being excessively applied to the first damping portion 81 so as to smoothly flow into the muffler 60, and the expansion ratio is reduced. The secondary increase increases the amount of attenuation of exhaust noise so that quieter traveling can be performed, and one end of the third chamber 6 of the muffler 60 is provided.
3 is connected to the other end of the second attenuating section 83. Further, the sum of the cross-sectional areas of the first damping portion 81 and the second damping portion 83 is equal to the sum of the cross-sectional areas of the first damping portion 81 and the second damping portion 83 and the cross-sectional area of the muffler 60. The cross-sectional area of the inflow pipe 80 for guiding the flow of the exhaust gas from the exhaust pipe 20 is smaller than the cross-sectional area so as to increase the expansion ratio. In this example, the first and second damping portions are formed by pipes.
【００１６】また、前記消音器６０の端部には排気ガス
の流路を形成するようテールパイプ５０が装着されてい
る。A tail pipe 50 is mounted at an end of the silencer 60 so as to form a flow path of exhaust gas.
【００１７】次に、上記のように構成された本発明に適
用される自動車の排気騒音減衰装置の作用、効果につい
て述べる。まず、排気マニホルド１０にエンジンの運転
中に燃料の燃焼後に発生されて排出される排気ガスを集
合させる。Next, the operation and effect of the exhaust noise attenuating device for a vehicle applied to the present invention configured as described above will be described. First, exhaust gas generated and discharged after combustion of fuel during operation of the engine is collected in the exhaust manifold 10.
【００１８】また、前記排気マニホルド１０内は、各シ
リンダー内部から排出される排気ガスの干渉および排出
抵抗を低下させうるように、その内部が曲面形状になっ
ているため、排圧を容易に低減させつつ前記排気マニホ
ルド１０を通過するようになる。さらに、前記排気マニ
ホルド１０には、前記排気パイプ２０が連通可能に連結
されているため、前記排気マニホルド１０を通過する排
気ガスが排気パイプ２０を通して流動するようになる。The inside of the exhaust manifold 10 has a curved surface so as to reduce interference and exhaust resistance of exhaust gas discharged from each cylinder, so that the exhaust pressure can be easily reduced. While passing through the exhaust manifold 10. Further, since the exhaust pipe 20 is connected to the exhaust manifold 10 so as to be able to communicate with the exhaust pipe, exhaust gas passing through the exhaust manifold 10 flows through the exhaust pipe 20.
【００１９】また、前記排気パイプ２０の端部には、消
音器６０が装着されているため、前記排気パイプ２０を
通過する排気ガスの排気騒音を低減させる。前記消音器
６０内に配設されて前記排気パイプ２０から前記消音器
６０内へ排気ガスが移動されるようガイドする前記流入
管８０には、該流入管８０の断面積よりは所定値以下の
断面積をもつ第１の減衰部８１が連通、連結されている
ため、前記流入管８０を通して前記消音器６０内へ流入
される排気ガスの膨張比を一次的に増大させて排気ガス
の騒音を低下させうるようになる。Further, since a silencer 60 is mounted at an end of the exhaust pipe 20, exhaust noise of exhaust gas passing through the exhaust pipe 20 is reduced. The inflow pipe 80, which is disposed in the muffler 60 and guides the exhaust gas to move from the exhaust pipe 20 into the muffler 60, has a cross-sectional area of the inflow pipe 80 that is smaller than a predetermined value. Since the first damping portion 81 having a cross-sectional area is connected and connected, the expansion ratio of the exhaust gas flowing into the muffler 60 through the inflow pipe 80 is temporarily increased to reduce the noise of the exhaust gas. Can be reduced.
【００２０】また、前記第１の減衰部８１の開口８２に
は、一端部が前記消音器６０の第３のチャンバ６３内に
配設された第２の減衰部８３の他端部が接続されている
ため、断面積が減少された第１の減衰部に排気ガスが集
合されつつ発生される排圧が前記第１の減衰部８１にか
かり過ぎるのを防止して円滑に前記消音器６０内へ流入
されるようにするとともに、膨張比を二次的に増大させ
ることにより、排気騒音の減衰量を増大させてより静か
に走行ができるようになる。The other end of the second damper 83 provided in the third chamber 63 of the muffler 60 is connected to one end of the opening 82 of the first damper 81. As a result, the exhaust gas generated while the exhaust gas is gathered in the first damping portion having a reduced cross-sectional area is prevented from being excessively applied to the first damping portion 81, so that the inside of the muffler 60 is smoothly prevented. By increasing the expansion ratio secondarily while increasing the expansion ratio, the amount of attenuation of the exhaust noise is increased and the vehicle can run more quietly.
【００２１】この際、前記第１の減衰部８１および第２
の減衰部８３の断面積の和は、排気ガスが前記排気パイ
プ２０から前記消音器６０に流入されるよう、排気ガス
の移動をガイドする流入管８０の断面積以下でなされて
いるため、前記第１の減衰部８１および第２の減衰部８
３の断面積の和と、前記消音器６０の断面積のわりあい
である膨張比をより増大させうるようになる。At this time, the first damping section 81 and the second
The sum of the cross-sectional areas of the damping portions 83 is smaller than the cross-sectional area of the inflow pipe 80 that guides the movement of the exhaust gas so that the exhaust gas flows into the muffler 60 from the exhaust pipe 20. First attenuation section 81 and second attenuation section 8
The expansion ratio, which is a relation between the sum of the cross-sectional areas of No. 3 and the cross-sectional area of the silencer 60, can be further increased.
【００２２】即ち、前記流入管８０に連結された前記第
１の減衰部８１と前記第１の減衰部８１に接続された第
２の減衰部８３を通して前記排気パイプ２０から前記消
音器６０内へ排気ガスが流入されるよう排気ガスを円滑
に流動させるとともに、膨張比を増大させて排気騒音の
減衰量を増大させることにより、自動車の運転者はより
静かな走行ができるようになる。さらに、前記消音器６
０の端部には、テールパイプ５０が装着されているた
め、排気ガスが自動車の外部に排出されるよう排気ガス
の流路を形成するようになる。That is, from the exhaust pipe 20 into the muffler 60 through the first damping part 81 connected to the inflow pipe 80 and the second damping part 83 connected to the first damping part 81. By allowing the exhaust gas to flow smoothly so that the exhaust gas flows in, and by increasing the expansion ratio to increase the amount of attenuation of the exhaust noise, the driver of the automobile can run quieter. Further, the silencer 6
Since the tail pipe 50 is attached to the end of the zero, an exhaust gas flow path is formed so that the exhaust gas is discharged to the outside of the vehicle.
【００２３】[0023]
【発明の効果】上述のように、本発明による自動車の排
気騒音減衰装置によれば、燃料の燃焼後、エンジンから
消音器に排出される排気ガスの膨張比を増大させて排圧
を低減させるとともに、排気騒音の減衰量を増大させる
ことにより、より静かな走行が確保できる優れた効果が
ある。As described above, according to the vehicle exhaust noise attenuating device of the present invention, the exhaust pressure is reduced by increasing the expansion ratio of the exhaust gas discharged from the engine to the muffler after fuel combustion. At the same time, by increasing the amount of attenuation of exhaust noise, there is an excellent effect that quieter traveling can be ensured.
【図１】本発明に適用される自動車の消音器で排気ガス
が流動する状態を概略に示す断面図である。FIG. 1 is a cross-sectional view schematically showing a state in which exhaust gas flows in a muffler of an automobile applied to the present invention.
【図２】本発明による排気騒音減衰装置の主要部分を示
す斜視図である。FIG. 2 is a perspective view showing a main part of the exhaust noise attenuation device according to the present invention.
【図３】従来の自動車の排気騒音減衰装置を示す斜視図
である。FIG. 3 is a perspective view showing a conventional automobile exhaust noise attenuation device.
【図４】従来自動車の排気騒音減衰装置の主要部品の内
部を一部切欠を示す部分である。FIG. 4 is a partially cutaway view showing the inside of a main part of an exhaust noise attenuating device for a conventional automobile.
【図５】従来自動車の消音器内で排気ガスが流動する状
態を概略に示す断面図である。FIG. 5 is a cross-sectional view schematically showing a state in which exhaust gas flows in a muffler of a conventional automobile.
１０ 排気マニホルド ２０ 排気パイプ ６０ 消音器 ６１ 第１のチャンバ ６２ 第２のチャンバ ６３ 第３のチャンバ ６４ 第４のチャンバ ６５ 第５のチャンバ ６６ 第１の隔壁部材 ６７ 第２の隔壁部材 ６８ 第３の隔壁部材 ６９ 第４の隔壁部材 ７１ 第１の管部材 ７２ 第２の管部材 ７３ 吐出管 ８０ 流入管 ８１ 第１の減衰部 ８２ 開口 ８３ 第２の減衰部 DESCRIPTION OF SYMBOLS 10 Exhaust manifold 20 Exhaust pipe 60 Silencer 61 First chamber 62 Second chamber 63 Third chamber 64 Fourth chamber 65 Fifth chamber 66 First partition member 67 Second partition member 68 Third Partition member 69 Fourth partition member 71 First pipe member 72 Second pipe member 73 Discharge pipe 80 Inflow pipe 81 First damping part 82 Opening 83 Second damping part
Claims (3)
排気ガスを排気パイプを通して消音器にガイドし、排気
騒音を減衰する自動車の排気騒音減衰装置において、 消音器には一端側が排気パイプに連結する流入管が配設
され、該流入管を通して消音器の内部へ流入される排気
ガスの膨張比を一次的に増大させて排気ガスの排気騒音
を低減させるように、前記流入管の他端側に流入管の断
面積以下の第１の減衰部が流入管と一体的に連結され、
該第１の減衰部の外周部には開口が設けられ、該開口に
は、前記第１の減衰部に排気ガスが集合されつつ排圧が
かかりすぎるのを防止して円滑に消音器の内部へ流入さ
れるようにするとともに、膨張比を二次的に増大させる
ことにより排気騒音減衰量を増大させる第２の減衰部が
接続されていることを特徴とする自動車の排気騒音減衰
装置。An exhaust noise attenuating device for an automobile, which guides exhaust gas discharged from an engine through an exhaust pipe after fuel combustion to attenuate exhaust noise, wherein one end of the silencer is connected to the exhaust pipe. The other end of the inflow pipe is provided so as to temporarily increase the expansion ratio of the exhaust gas flowing into the muffler through the inflow pipe and reduce the exhaust noise of the exhaust gas. A first damping portion having a cross-sectional area equal to or less than the inflow pipe is integrally connected to the inflow pipe;
An opening is provided in an outer peripheral portion of the first damping portion. Exhaust gas is collected in the first damping portion and prevents excessive exhaust pressure from being applied to the inside of the muffler. An exhaust noise attenuation device for an automobile, wherein a second attenuation portion is connected to increase the exhaust noise attenuation amount by secondarily increasing the expansion ratio while allowing the air to flow into the vehicle.
パイプであることを特徴とする請求項１に記載の自動車
の排気騒音減衰装置。2. The first damping unit and the second damping unit,
The exhaust noise attenuating device for a vehicle according to claim 1, wherein the device is a pipe.
断面積の和は、膨張比をより増大させ得るように前記流
入管の断面積以下であることを特徴とする請求項１また
は２記載の自動車の排気騒音減衰装置。3. The cross-sectional area of the first damping portion and the cross-sectional area of the second damping portion are smaller than the cross-sectional area of the inflow pipe so as to further increase the expansion ratio. Or the exhaust noise attenuating device for an automobile according to 2.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019960043887A KR19980025663A (en) | 1996-10-04 | 1996-10-04 | Noise reduction device of car |
| KR1996P43887 | 1996-10-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH10184340A true JPH10184340A (en) | 1998-07-14 |
Family
ID=19476181
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9289087A Pending JPH10184340A (en) | 1996-10-04 | 1997-10-06 | Exhaust noise damping device for automobile |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPH10184340A (en) |
| KR (1) | KR19980025663A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040023041A (en) * | 2002-09-10 | 2004-03-18 | 현대자동차주식회사 | Muffler in vehicle |
| JP2007231784A (en) * | 2006-02-28 | 2007-09-13 | Honda Motor Co Ltd | Exhaust device for vehicle |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102312460B1 (en) * | 2021-06-09 | 2021-10-14 | 주식회사 스마텍 | silencer for semiconductor vacuum pump |
-
1996
- 1996-10-04 KR KR1019960043887A patent/KR19980025663A/en not_active Application Discontinuation
-
1997
- 1997-10-06 JP JP9289087A patent/JPH10184340A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040023041A (en) * | 2002-09-10 | 2004-03-18 | 현대자동차주식회사 | Muffler in vehicle |
| JP2007231784A (en) * | 2006-02-28 | 2007-09-13 | Honda Motor Co Ltd | Exhaust device for vehicle |
| JP4684916B2 (en) * | 2006-02-28 | 2011-05-18 | 本田技研工業株式会社 | Vehicle exhaust system |
Also Published As
| Publication number | Publication date |
|---|---|
| KR19980025663A (en) | 1998-07-15 |
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| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |