JPS6364604B2 - - Google Patents
Info
- Publication number
- JPS6364604B2 JPS6364604B2 JP9377981A JP9377981A JPS6364604B2 JP S6364604 B2 JPS6364604 B2 JP S6364604B2 JP 9377981 A JP9377981 A JP 9377981A JP 9377981 A JP9377981 A JP 9377981A JP S6364604 B2 JPS6364604 B2 JP S6364604B2
- Authority
- JP
- Japan
- Prior art keywords
- outer cylinder
- muffler outer
- pipe
- muffler
- partition plate
- 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
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
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features
- F01N13/18—Construction facilitating manufacture, assembly, or disassembly
-
- 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
- F01N2490/02—Two or more expansion chambers in series connected by means of tubes
- F01N2490/06—Two or more expansion chambers in series connected by means of tubes the gases flowing longitudinally from inlet to outlet in opposite directions
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Silencers (AREA)
Description
【発明の詳細な説明】
この発明は、オートバイ等の内燃機関のマフラ
に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a muffler for an internal combustion engine such as a motorcycle.
一般に、オートバイでは、車体に装着が便利な
ように細長い筒状のマフラが用いられる。第１図
はその例で、末広のマフラ外筒１内を複数の仕切
板２で仕切つて複数の消音室３とし、仕切板２を
貫通するように複数のバツフルパイプ４を配置す
る。一般に、バツフルパイプ４は、マフラ外筒１
の中心線に平行に配置されるが、これでは長いバ
ツフルパイプ４を設けようとしても、先端部がマ
フラ外筒１に当つて制限され、バツフルパイプ４
が短くなる。バツフルパイプ４は、長いものほど
低周波域の消音ができ、長いものと短いものを組
合せるが、前述のように長さが制限されて低周波
域の消音が十分できない。これに対し、第２図に
示すように、バツフルパイプ４をマフラ外筒１の
一側に平行になるようにすれば、長いバツフルパ
イプ４でも、先端部がマフラ外筒１に当ることが
なく、長いものが用いられて、低周波域の消音も
できる。しかし、このようにすると、仕切板２の
バツフルパイプ４を貫通させる打抜き孔が斜めに
なるので、仕切板２を一度でプレス成形すること
ができず、二度で成形しなければならないので製
造コストが高くつく。 Motorcycles generally use elongated cylindrical mufflers for convenient attachment to the vehicle body. FIG. 1 shows an example of this, in which the inside of a wide-walled muffler outer cylinder 1 is partitioned by a plurality of partition plates 2 to form a plurality of silencing chambers 3, and a plurality of buttful pipes 4 are arranged so as to pass through the partition plates 2. Generally, the full pipe 4 is the muffler outer cylinder 1.
However, even if an attempt is made to install a long buttful pipe 4, the tip will be restricted by hitting the muffler outer cylinder 1, and the buttful pipe 4 will be placed parallel to the center line of the muffler.
becomes shorter. The longer the baffle pipe 4 is, the better it can muffle noise in the low frequency range, and a long pipe and a short pipe can be combined, but as mentioned above, the length is limited and it is not possible to sufficiently muffle the sound in the low frequency range. On the other hand, as shown in Fig. 2, if the buttful pipe 4 is made parallel to one side of the muffler outer cylinder 1, the tip of the long buttful pipe 4 will not touch the muffler outer cylinder 1, and the long It can also be used to muffle sounds in the low frequency range. However, in this case, the punched holes through which the buttful pipes 4 of the partition plate 2 are passed are obliquely, so the partition plate 2 cannot be press-formed in one go, but has to be formed in two steps, which reduces manufacturing costs. It's expensive.
この発明は、かかる点に鑑み改善したもので、
以下第３図に示す本発明の実施例について説明す
る。 This invention has been improved in view of these points,
The embodiment of the present invention shown in FIG. 3 will be described below.
マフラ外筒１は末広になつた円筒状のもので、
内側に複数の仕切板２を入れて縦列の複数の消音
室３に仕切る。仕切板２は、一側がマフラ外筒１
に直交するように、外周のフランジを成形する。
そして、仕切板２に直交してバツフルパイプ４の
貫通孔を設ける。こうすることによつて、仕切板
２は一側がマフラ外筒１の一側に直交するよう
に、マフラ外筒１の中心線に対して斜めに配置さ
れ、バツフルパイプ４は、マフラ外筒１の一側に
平行に配置できる。 The muffler outer cylinder 1 has a cylindrical shape with a wide end.
A plurality of partition plates 2 are inserted inside to partition into a plurality of vertically arranged silencing chambers 3. The partition plate 2 has a muffler outer cylinder 1 on one side.
Form the outer flange so that it is perpendicular to the
Then, a through hole for the buttful pipe 4 is provided perpendicularly to the partition plate 2. By doing this, the partition plate 2 is arranged obliquely with respect to the center line of the muffler outer cylinder 1 so that one side thereof is perpendicular to one side of the muffler outer cylinder 1, and the buttful pipe 4 is arranged at an angle with respect to the center line of the muffler outer cylinder 1. Can be placed parallel to one side.
作用について説明する。 The effect will be explained.
バツフルパイプ４は、マフラ外筒１の一側に平
行に配置されるので、先端がマフラ外筒１に当る
ことがなく、長いバツフルパイプ４が装着できて
低周波域の消音も効果的にできて、騒音の低減が
図れる。又、仕切板２は、バツフルパイプ４を貫
通させて支える孔が仕切板２の面に対して直角に
でき、仕切板２のプレス成形が一度でできるの
で、製造コストが高くなることもない。 Since the round pipe 4 is arranged parallel to one side of the muffler outer cylinder 1, the tip does not touch the muffler outer cylinder 1, and a long round pipe 4 can be installed, making it possible to effectively muffle noise in the low frequency range. Noise can be reduced. Further, the partition plate 2 has holes for penetrating and supporting the full pipe 4 that are perpendicular to the surface of the partition plate 2, and the partition plate 2 can be press-formed in one step, so that the manufacturing cost does not increase.
以上説明したように、この発明は、末広のマフ
ラ外筒内を複数の仕切板で複数の消音室に仕切る
ものに於て、仕切板の一側がマフラ外筒の一側に
直交するように仕切板をマフラ外筒の中心線に対
し斜めに配置し、仕切板に直交して貫通するバツ
フルパイプを複数本設けたので、バツフルパイプ
がマフラ外筒の一側に平行に配置でき、長いバツ
フルパイプが使用できて低周波の消音が効果的に
でき、騒音の低減ができる。又、仕切板は、バツ
フルパイプを貫通保持する孔が仕切板の面に対し
て直角にでき、一度のプレス成形でできるので、
加工手数が増えることがなく、安価に製造でき
る。 As explained above, the present invention partitions the inside of a muffler outer cylinder with a wide end into a plurality of silencing chambers with a plurality of partition plates, in which one side of the partition plates is perpendicular to one side of the muffler outer cylinder. The plate is arranged diagonally to the center line of the muffler outer cylinder, and multiple buttful pipes are provided that pass through the partition plate perpendicularly, so the buttful pipe can be placed parallel to one side of the muffler outer cylinder, making it possible to use long buttful pipes. It is possible to effectively muffle low frequencies and reduce noise. In addition, the partition plate has holes that penetrate and hold the buttful pipe at right angles to the surface of the partition plate, and can be made in one press molding.
It can be manufactured at low cost without increasing the number of processing steps.
第１図及び第２図は各々従来例を示す縦断面
図、第３図は本発明の一実施例を示す縦断面図で
ある。
１……マフラ外筒、２……仕切板、３……消音
室、４……バツフルパイプ。
1 and 2 are longitudinal sectional views showing a conventional example, and FIG. 3 is a longitudinal sectional view showing an embodiment of the present invention. 1...muffler outer cylinder, 2...partition plate, 3...muffling chamber, 4...buttful pipe.
Claims (1)
消音室に仕切るものに於て、仕切板の一側がマフ
ラ外筒の一側に直交するように仕切板をマフラ外
筒の中心線に対し斜めに配置し、仕切板に直交し
て貫通するバツフルパイプを複数本設けたことを
特徴とする内燃機関のマフラ。1. In devices where the inside of a wide muffler outer cylinder is partitioned into a plurality of silencing chambers by multiple partition plates, the partition plates should be placed along the center line of the muffler outer cylinder so that one side of the partition plate is orthogonal to one side of the muffler outer cylinder. A muffler for an internal combustion engine is characterized by having a plurality of vertical pipes arranged diagonally and penetrating orthogonally to a partition plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9377981A JPS57210118A (en) | 1981-06-19 | 1981-06-19 | Muffler for internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9377981A JPS57210118A (en) | 1981-06-19 | 1981-06-19 | Muffler for internal combustion engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57210118A JPS57210118A (en) | 1982-12-23 |
| JPS6364604B2 true JPS6364604B2 (en) | 1988-12-13 |
Family
ID=14091898
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9377981A Granted JPS57210118A (en) | 1981-06-19 | 1981-06-19 | Muffler for internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57210118A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61183414U (en) * | 1985-04-12 | 1986-11-15 | ||
| CN108223057A (en) * | 2018-01-18 | 2018-06-29 | 河南中盛汽配科技股份有限公司 | Exhaust tube silencer |
-
1981
- 1981-06-19 JP JP9377981A patent/JPS57210118A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57210118A (en) | 1982-12-23 |
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