JPS62126216A - Side branch type muffler - Google Patents
Side branch type mufflerInfo
- Publication number
- JPS62126216A JPS62126216A JP26553885A JP26553885A JPS62126216A JP S62126216 A JPS62126216 A JP S62126216A JP 26553885 A JP26553885 A JP 26553885A JP 26553885 A JP26553885 A JP 26553885A JP S62126216 A JPS62126216 A JP S62126216A
- Authority
- JP
- Japan
- Prior art keywords
- branch pipe
- branch
- gas passage
- tube
- 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
- F01N1/02—Silencing apparatus characterised by method of silencing by using resonance
-
- 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
- F01N2490/00—Structure, disposition or shape of gas-chambers
- F01N2490/14—Dead or resonance chambers connected to gas flow tube by relatively short side-tubes
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
【発明の詳細な説明】
Ａ０発明の目的
（１）産業上の利用分野
本発明は、気体通路管の途中に、先端が閉塞した分岐管
が接続されて成るサイドブランチ型消音装置に関する。DETAILED DESCRIPTION OF THE INVENTION A0 OBJECTS OF THE INVENTION (1) Industrial Field of Application The present invention relates to a side branch type muffler in which a branch pipe with a closed end is connected in the middle of a gas passage pipe.
（２）従来の技術
従来、かかる消音装置は、たとえば実開昭４８−３２７
３４号、実開昭５０−１１１０４号、実開昭５０−１３
６８０４号、実開昭５１−１６１４４号、実開昭５６−
１３８１０８号および特開昭５５−５１９１０号などで
良く知られている。(2) Prior Art Conventionally, such a silencer has been proposed, for example, in U.S. Pat.
No. 34, Utility Model No. 50-11104, Utility Model No. 50-13
No. 6804, Utility Model Application No. 16144, Utility Model Application No. 1983-
138108 and JP-A-55-51910.
（３）発明が解決しようとする問題点
上記従来の技術では、分岐管が軸線方向に同一断面の直
管により形成されている。このため、たとえば内燃機関
の吸気系に適用する場合などには吸気管の周囲に各種機
器が配置されているので、分岐管を配置するためのスペ
ースを確保し得ないことがある。(3) Problems to be Solved by the Invention In the above-mentioned conventional technology, the branch pipes are formed by straight pipes having the same cross section in the axial direction. For this reason, for example, when applied to the intake system of an internal combustion engine, various devices are arranged around the intake pipe, so it may not be possible to secure space for arranging the branch pipe.
本発明は、かかる事情に鑑みてなされたものであり、分
岐管のレイアウト上の自由度を大としたサイドブランチ
型消音装置を提供することを目的とする。The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a side branch type muffling device that has a greater degree of freedom in the layout of branch pipes.
Ｂ 発明の構成
（１）問題点を解決するための手段
本発明によれば、分岐管は、気体通路管側から順に、大
径部と小径部とが段差をなして連設されて成る。B. Structure of the Invention (1) Means for Solving the Problems According to the present invention, the branch pipe is comprised of a large diameter portion and a small diameter portion that are successively arranged in step order from the gas passage pipe side.
（２）作 用
分岐管の途中に段差があることにより、周囲の機器を避
けて分岐管を配置することが可能となる。(2) Effect By having a step in the middle of the branch pipe, it becomes possible to arrange the branch pipe to avoid surrounding equipment.
（３）実施例
以下、図面により本発明の一実施例について説明すると
、先ず第１図において、内燃機関の吸気管などの気体通
路管１の途中には、先端が閉塞した分岐管２が接続され
る。(3) Embodiment Below, an embodiment of the present invention will be explained with reference to the drawings. First, in FIG. 1, a branch pipe 2 with a closed end is connected in the middle of a gas passage pipe 1 such as an intake pipe of an internal combustion engine. be done.
分岐管２は、途中で段差をなすように形成される。すな
わち分岐管２は、気体通路１側から順に、大径部３と小
径部４とが同軸に連設されて成り、小径部４の先端が端
板５で閉塞される。The branch pipe 2 is formed so as to have a step in the middle. That is, the branch pipe 2 has a large diameter part 3 and a small diameter part 4 coaxially connected in order from the gas passage 1 side, and the tip of the small diameter part 4 is closed with an end plate 5.
分岐管２を、上述のように途中で径を異ならせるように
することにより、分岐管２の配置上の自由度が増大する
。すなわち、分岐管２の先端付近に図示しない機器が配
置されている場合に、分岐管２の先端側が小径となって
いることにより、前記機器に接触することを避けて分岐
管２を配置し得る可能性が大となる。By making the branch pipe 2 have different diameters along the way as described above, the degree of freedom in the arrangement of the branch pipe 2 is increased. That is, when a device (not shown) is placed near the tip of the branch pipe 2, since the tip side of the branch pipe 2 has a small diameter, the branch pipe 2 can be placed while avoiding contact with the device. The possibility is great.
ところで、本発明に従って構成された分岐管２による消
音効果を実験により確かめると、第２図で示すようにな
る。この実験では、大径部３の内径を５Ｑｗφとし、小
径部４の内径を５０ｆｌφとするとともに、大径部３お
よび小径部４の長さを同一とした分岐管２を用い、その
分岐管２で得られた結果を曲線Ａで示す。また比較のた
めに、軸方向に同一断面であって分岐管２と同一長さの
分岐管を用いたときの結果を曲線Ｂ、Ｃで示す。すなわ
ち曲線Ｂは、内径６０龍φのものを示し、曲線Ｃは内径
５（Ｉｎφのものを示す。By the way, when the silencing effect of the branch pipe 2 constructed according to the present invention was confirmed through experiments, it was as shown in FIG. In this experiment, the inner diameter of the large diameter part 3 was 5Qwφ, the inner diameter of the small diameter part 4 was 50flφ, and a branch pipe 2 with the same length as the large diameter part 3 and the small diameter part 4 was used. Curve A shows the results obtained. For comparison, curves B and C show the results when a branch pipe having the same cross section in the axial direction and the same length as the branch pipe 2 was used. That is, curve B shows the inner diameter of 60 mm, and curve C shows the inner diameter of 5 (Inφ).
この第２図で明らかなように、本発明に従って２段径と
した分岐管２は、従来の直両形の分岐管に比べると、ピ
ーク減衰量に関しては、Ａ＞Ｃ＞Ｂの関係となり、また
有効な周波数幅に関しては、Ｃ＜Ａ＜Ｂの関係となる。As is clear from FIG. 2, the branch pipe 2 with a two-stage diameter according to the present invention has a relationship of A>C>B in terms of peak attenuation compared to the conventional double-diameter branch pipe. Furthermore, regarding the effective frequency width, the relationship C<A<B holds.
したがって、本発明に従う分岐管２を用いるにあたって
そのような減衰特性を考Ｉ＆シて用いることが望ましい
。Therefore, when using the branch pipe 2 according to the present invention, it is desirable to take such attenuation characteristics into consideration.
Ｃ１発明の効果
以上のように本発明によれば、分岐管は、気体通路管側
から順に、大径部と小径部とが段差をなして連設されて
成るので、周囲の機器を避は得る可能性が大となり、配
置上の自由度が大となる。C1 Effects of the Invention As described above, according to the present invention, the branch pipe has a large diameter part and a small diameter part connected successively from the gas passage pipe side with steps, so that surrounding equipment can be avoided. This increases the possibility of obtaining the desired results and increases the degree of freedom in placement.
図面は本発明の一実施例を示すもので、第１図は簡略化
した縦断面図、第２図は実験結果を示すグラフである。
ｌ・・・気体通路管、２・・・分岐管、３・・・大径部
、４・・・小径部The drawings show one embodiment of the present invention, and FIG. 1 is a simplified vertical cross-sectional view, and FIG. 2 is a graph showing experimental results. l...Gas passage pipe, 2...Branch pipe, 3...Large diameter part, 4...Small diameter part
Claims (1)
て成るサイドブランチ型消音装置において、分岐管は、
気体通路管側から順に、大径部と小径部とが段差をなし
て連設されて成ることを特徴とするサイドブランチ型消
音装置。In a side branch type silencer in which a branch pipe with a closed end is connected in the middle of a gas passage pipe, the branch pipe is
A side branch type silencer characterized in that a large diameter part and a small diameter part are successively installed with a step difference in order from the gas passage pipe side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26553885A JPS62126216A (en) | 1985-11-26 | 1985-11-26 | Side branch type muffler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26553885A JPS62126216A (en) | 1985-11-26 | 1985-11-26 | Side branch type muffler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62126216A true JPS62126216A (en) | 1987-06-08 |
Family
ID=17418513
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26553885A Pending JPS62126216A (en) | 1985-11-26 | 1985-11-26 | Side branch type muffler |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62126216A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6034514B2 (en) * | 1978-04-04 | 1985-08-09 | 住友電気工業株式会社 | Manufacturing method of diamond sintered body |
-
1985
- 1985-11-26 JP JP26553885A patent/JPS62126216A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6034514B2 (en) * | 1978-04-04 | 1985-08-09 | 住友電気工業株式会社 | Manufacturing method of diamond sintered body |
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