JPS6032920A - Exhauster of internal-combustion engine - Google Patents
Exhauster of internal-combustion engineInfo
- Publication number
- JPS6032920A JPS6032920A JP14021083A JP14021083A JPS6032920A JP S6032920 A JPS6032920 A JP S6032920A JP 14021083 A JP14021083 A JP 14021083A JP 14021083 A JP14021083 A JP 14021083A JP S6032920 A JPS6032920 A JP S6032920A
- Authority
- JP
- Japan
- Prior art keywords
- expansion chamber
- exhaust
- wall
- exhaust pipes
- welding
- 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
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 ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- 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
- F01N2450/00—Methods or apparatus for fitting, inserting or repairing different elements
- F01N2450/22—Methods or apparatus for fitting, inserting or repairing different elements by welding or brazing
-
- 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
- F01N2470/00—Structure or shape of gas passages, pipes or tubes
- F01N2470/14—Plurality of outlet tubes, e.g. in parallel or with different length
-
- 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
- F01N2470/00—Structure or shape of gas passages, pipes or tubes
- F01N2470/16—Plurality of inlet tubes, e.g. discharging into different chambers
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】
本発明は内燃機関の排気装置に関し、さらに詳しくは多
気筒の内燃機関用に好適な排気装置に関するものである
。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an exhaust system for an internal combustion engine, and more particularly to an exhaust system suitable for a multi-cylinder internal combustion engine.
多気筒エンジンを搭載した自動二輪車等の車輌に設ける
排気装置として、複数本の排気管を板金層の箱状膨張室
にいったん集束し、この膨張室の排気側から別の排気管
を介して大気中へ排気するようにしたものがある。上記
膨張室は板金層であるため、そのままの構成では排気脈
動により壁面が振動し、大きなシェル音を発生する。従
来、このシェル音を無くずため膨張室内面にグラスウー
ルをパンチメタルで固定したり、あるいは上下に渡る支
柱を固定するなどの手段が講ぜられているが、前者のグ
ラスウールを固定する手段は重量増加を招き、またコス
ト高になる欠点があり、また後者は支柱が排気に流動抵
抗を与え、エンジン出力の低下を招く欠点がある。As an exhaust system installed in a vehicle such as a motorcycle equipped with a multi-cylinder engine, multiple exhaust pipes are once converged into a box-shaped expansion chamber made of a sheet metal layer, and the air is discharged from the exhaust side of this expansion chamber through another exhaust pipe. Some are designed to exhaust air inside. Since the expansion chamber is made of a sheet metal layer, if configured as is, the wall surface would vibrate due to exhaust pulsation, producing loud shell noise. Conventionally, measures have been taken to eliminate this shell noise, such as fixing glass wool to the inside of the expansion chamber with punched metal, or fixing struts extending above and below, but the former method of fixing glass wool increases the weight. The latter has the disadvantage that the struts provide flow resistance to the exhaust gas, resulting in a reduction in engine output.
本発明の目的は上述のような問題に鑑の、重量増加を招
いたり、あるいは排気に抵抗を与えるようなことのない
、低コストで製作可能にする内燃機関の排気装置を提供
せんとすることにある。SUMMARY OF THE INVENTION In view of the above-mentioned problems, an object of the present invention is to provide an exhaust system for an internal combustion engine that does not increase weight or create resistance to exhaust gas and can be manufactured at low cost. It is in.
上記目的を達成する本発明は、内燃機関に接続される複
数本の排気管を板金層の箱状の膨張室に集束し、該膨張
室のｕｒ気側から別の排気管を介して大気側へ排気すべ
くした排気装置において、前記複数本の排気管を前記膨
張室の内側へ深く挿入（７、この排気管の挿入部の外壁
と膨張室の内壁との間を溶接固定したことを特徴とする
ものである。The present invention achieves the above object by converging a plurality of exhaust pipes connected to an internal combustion engine into a box-shaped expansion chamber made of a sheet metal layer, and passing from the ur-air side of the expansion chamber to the atmosphere side via another exhaust pipe. In the exhaust system for exhausting air into the expansion chamber, the plurality of exhaust pipes are deeply inserted into the expansion chamber (7) The outer wall of the insertion portion of the exhaust pipe and the inner wall of the expansion chamber are fixed by welding. That is.
以下、本発明を図に示す実施例により説明する。Hereinafter, the present invention will be explained with reference to embodiments shown in the drawings.
第１図は、４気筒エンジンを搭載した自動二輪車用の本
発明による排気装置を示すものである。FIG. 1 shows an exhaust system according to the present invention for a motorcycle equipped with a four-cylinder engine.
４本の排気管］、、１．１．１は屈曲した前端側を、図
示しないエンジンの各気筒にそれぞれ接続されるように
なっており、後端側を排気管の一部となるデフユーザ管
５，５．５．５を介して板金製の箱状の膨張室２に接続
集束されている。排気管１とデフユーザ管５とはバンド
６により締イづ固定されている。膨張室２の他端側には
別の排気管３．３が接続され、消音器４を介して大気中
に連通している。The four exhaust pipes], 1.1.1 have their bent front end connected to each cylinder of the engine (not shown), and their rear end connected to a differential user pipe that becomes part of the exhaust pipe. 5, 5.5.5 to a box-shaped expansion chamber 2 made of sheet metal. The exhaust pipe 1 and the differential user pipe 5 are fastened together by a band 6. Another exhaust pipe 3.3 is connected to the other end of the expansion chamber 2 and communicates with the atmosphere via a muffler 4.
第２．３図は膨張室２部分の詳細を示すものである。膨
張室２は半割状にした板金製の上板２ａと下板２ｂとが
合体し、その継目が溶接されて箱状になっている。この
膨張室２の表面には補強用リブ８が設けられている。排
気管の一部を構成するデフユーザ管５は、膨張室２の入
口端において周囲が溶接固定されると共に、後端側を奥
深く内側へ挿入されており、その挿入部の外壁と膨張室
２の内壁との間をプラグ溶接され、第４図に示すような
溶接部７を有する固定構造になっている。排気側の排気
管３は膨張室２の出口端において周囲を溶接固定される
が、必要により」１記デフユーザ管５と同様に前端側を
膨張室２内に奥深く挿入し、その挿入部を膨張室２の内
壁との間でプラグ溶接してもよい。Figure 2.3 shows details of the two parts of the expansion chamber. The expansion chamber 2 is formed by combining an upper plate 2a and a lower plate 2b made of sheet metal into halves, and the joints thereof are welded to form a box shape. A reinforcing rib 8 is provided on the surface of the expansion chamber 2. The differential user pipe 5, which constitutes a part of the exhaust pipe, has its periphery fixed by welding at the inlet end of the expansion chamber 2, and its rear end side is inserted deep inside, so that the outer wall of the insertion part and the expansion chamber 2 It has a fixed structure that is plug welded to the inner wall and has a welded portion 7 as shown in FIG. The circumference of the exhaust pipe 3 on the exhaust side is fixed by welding at the outlet end of the expansion chamber 2, but if necessary, the front end side can be inserted deeply into the expansion chamber 2 in the same way as the differential user pipe 5 described in 1 above, and the inserted part can be expanded. Plug welding may be performed between the inner wall of the chamber 2 and the inner wall of the chamber 2.
上記膨張室２の」二下板２ａ、２ｂとデフユーザｇ５と
排気管３との組立ては、まず全体を組付は状態にして上
板２ａと下板２ｂとの継目に沿って溶接を行い、デフユ
ーザ管５及び排気管３に対しては上板２ａ又は下板２ｂ
に沿う一方の半周分をまず溶接し、次いで最後の残りの
半周分を溶接するようにすればよい。To assemble the two lower plates 2a and 2b of the expansion chamber 2, the differential user g5, and the exhaust pipe 3, first, the entire assembly is assembled, and welding is performed along the joint between the upper plate 2a and the lower plate 2b. Upper plate 2a or lower plate 2b for differential user pipe 5 and exhaust pipe 3
It is sufficient to first weld one half of the circumference along the line, and then weld the last remaining half of the circumference.
上述した排気装置によると、排気管の一部を構成する複
数本のデフユーザ管５の後端が、膨張室２の内側へ深く
挿入され、その挿入部が膨張室２の内壁との間で溶接固
定されているため、このデフユーザ管５の挿入部が膨張
室２の強度メンバーとして作用し、薄い板金製の膨張室
２の剛性を向上する。そのため、膨張室２が排気脈動に
よって振動を行って大きなシェル音を発生ずることがな
い。また、膨張室内面にグラスウールを厚く貼着する従
来構造のように重量増加を招くことがなく、かつ低コス
トであり、さらに上下に掛は渡された支柱のように排気
の流動抵抗を増大することもない。According to the above-mentioned exhaust system, the rear ends of the plurality of differential user pipes 5 constituting a part of the exhaust pipe are deeply inserted into the expansion chamber 2, and the inserted portions are welded to the inner wall of the expansion chamber 2. Since it is fixed, the insertion portion of the differential user tube 5 acts as a strength member of the expansion chamber 2 and improves the rigidity of the expansion chamber 2 made of a thin sheet metal. Therefore, the expansion chamber 2 does not vibrate due to exhaust pulsation and generate large shell noise. In addition, unlike the conventional structure in which glass wool is pasted thickly on the inside of the expansion chamber, it does not increase weight and is low cost.Furthermore, the upper and lower hangings increase the flow resistance of the exhaust air like struts. Not at all.
なお、上記実施例では膨張室２の内壁面とデフユーザ管
５の挿入部外壁面との溶接をプラグ溶接で行っているが
、この溶接を他の溶接法によって行ってもよい。また、
溶接個所は実施例では上下２ｆｌｉｉｌ所であるが、さ
らに溶接個所を多くすることも差し支えない。In the above embodiment, the inner wall surface of the expansion chamber 2 and the outer wall surface of the insertion portion of the differential user tube 5 are welded together by plug welding, but this welding may be performed by other welding methods. Also,
In the embodiment, there are two welding locations on the top and bottom, but there is no problem in increasing the number of welding locations.
上述したように本発明は、内燃機関に接続される複数本
の排気管を板金製の箱状の膨張室に集束し、該膨張室の
排気側から別の排気管を介して大気側へ排気すべくした
排気装置において、前記複数本の排気管を前記膨張室の
内側へ深く挿入し、この排気管の挿入部の外壁と膨張室
の内壁との間を溶接固定したので、排気管の挿入部が膨
張室の強度メンバーとして作用し、板金型膨張室の剛性
を向上させるため、排気脈動により膨張室が振動して大
きなシェル音を発生ずることがない。しかも、従来のグ
ラスウールを貼着した構造のように重量増加を招くこと
がなく、かつ低コストで製作することができる。また、
支柱を設ける場合のように排気に流動抵抗を与えること
もないので、エンジンの出力低下を招くこともない。As described above, the present invention converges a plurality of exhaust pipes connected to an internal combustion engine into a box-shaped expansion chamber made of sheet metal, and exhausts from the exhaust side of the expansion chamber to the atmosphere side via another exhaust pipe. In the desired exhaust system, the plurality of exhaust pipes are inserted deeply into the expansion chamber, and the outer wall of the insertion portion of the exhaust pipes and the inner wall of the expansion chamber are welded and fixed, so that the exhaust pipes can be inserted easily. Since the part acts as a strength member of the expansion chamber and improves the rigidity of the sheet metal expansion chamber, the expansion chamber will not vibrate due to exhaust pulsation and generate large shell noise. Moreover, unlike the conventional structure in which glass wool is pasted, there is no increase in weight, and it can be manufactured at low cost. Also,
Unlike the case where struts are provided, there is no flow resistance to the exhaust gas, so there is no reduction in engine output.
第１図は４気筒エンジンを搭載した自動二輪車用の本発
明の実施例による排気装置の平面図、第２図は同排気装
置の膨張室部分の平面図、第３図は第２図のｍ−ｍ矢視
断面図、第４図は第３図のＩＶ−ＴＶ矢視断面図である
。
１．３・・排気管、 ２・・膨張室、 ５・・デフユー
ザ管（排気管）、 ７・・溶接部。
代理人 弁理士 小 川 信 −
弁理士 野 口 賢 照
弁理士斎下和彦FIG. 1 is a plan view of an exhaust system according to an embodiment of the present invention for a motorcycle equipped with a four-cylinder engine, FIG. 2 is a plan view of an expansion chamber portion of the exhaust system, and FIG. 4 is a sectional view taken along the line IV-TV in FIG. 3. 1.3... Exhaust pipe, 2... Expansion chamber, 5... Differential user pipe (exhaust pipe), 7... Welded part. Agent: Patent Attorney Shin Ogawa − Patent Attorney Ken Noguchi Teru Patent Attorney Kazuhiko Saishita
Claims (1)
膨張室に集束し、該膨張室の排気側から別の排気管を介
して大気側へ排気すべくした排気装置において、前記複
数本の排気管を前記膨張室の内側へ深く挿入し、この排
気管の挿入部の外壁と膨張室の内壁との間を溶接固定し
たことを特徴とする内燃機関の排気装置。In an exhaust system in which a plurality of exhaust pipes connected to an internal combustion engine are converged into a box-shaped expansion chamber made of a sheet metal layer, and the exhaust is to be exhausted from the exhaust side of the expansion chamber to the atmosphere side via another exhaust pipe, An exhaust system for an internal combustion engine, characterized in that a plurality of exhaust pipes are deeply inserted into the expansion chamber, and the outer wall of the insertion portion of the exhaust pipes and the inner wall of the expansion chamber are fixed by welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14021083A JPS6032920A (en) | 1983-07-30 | 1983-07-30 | Exhauster of internal-combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14021083A JPS6032920A (en) | 1983-07-30 | 1983-07-30 | Exhauster of internal-combustion engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6032920A true JPS6032920A (en) | 1985-02-20 |
| JPH057532B2 JPH057532B2 (en) | 1993-01-29 |
Family
ID=15263475
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14021083A Granted JPS6032920A (en) | 1983-07-30 | 1983-07-30 | Exhauster of internal-combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6032920A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4840029A (en) * | 1986-03-07 | 1989-06-20 | Yamaha Hatsudoki Kabushiki Kaisha | Exhaust gas control means for engine |
| US4909033A (en) * | 1985-11-26 | 1990-03-20 | Yamaha Hatsudoki Kabushiki Kaisha | High performance exhaust system for internal combustion engine |
| US4912930A (en) * | 1985-11-26 | 1990-04-03 | Yamaha Hatsudoki Kabushiki Kaisha | High performance exhaust system for internal combustion engine |
| US4999999A (en) * | 1987-09-14 | 1991-03-19 | Yamaha Hatsudoki Kabushiki Kaisha | Exhaust gas control device for motorcycles |
| US5271477A (en) * | 1991-02-22 | 1993-12-21 | Yamaha Hatsudoki Kabushiki Kaisha | Oxygen sensor layout |
| WO1994000678A1 (en) * | 1992-06-26 | 1994-01-06 | Flowmaster, Inc. | Muffler assembly with balanced chamber and method |
| WO1998020239A1 (en) * | 1996-11-06 | 1998-05-14 | Emitec Gesellschaft Für Emissionstechnologie Mbh | Exhaust gas pipe system for discharging exhaust gases from an internal combustion engine |
| US6863293B2 (en) | 2002-10-22 | 2005-03-08 | Noritaka Kimura | Wheelchair |
| JP2007162653A (en) * | 2005-12-16 | 2007-06-28 | Kawasaki Heavy Ind Ltd | Exhaust device for vehicle and motorcycle having exhaust device |
| WO2010064256A1 (en) * | 2008-12-04 | 2010-06-10 | Rajeev Madhukar Ranadive | Automotive exhaust system |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5722017U (en) * | 1980-07-14 | 1982-02-04 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5211134A (en) * | 1975-07-17 | 1977-01-27 | Mitsubishi Heavy Ind Ltd | Composite material and method of production thereof |
-
1983
- 1983-07-30 JP JP14021083A patent/JPS6032920A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5722017U (en) * | 1980-07-14 | 1982-02-04 |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4909033A (en) * | 1985-11-26 | 1990-03-20 | Yamaha Hatsudoki Kabushiki Kaisha | High performance exhaust system for internal combustion engine |
| US4912930A (en) * | 1985-11-26 | 1990-04-03 | Yamaha Hatsudoki Kabushiki Kaisha | High performance exhaust system for internal combustion engine |
| US4840029A (en) * | 1986-03-07 | 1989-06-20 | Yamaha Hatsudoki Kabushiki Kaisha | Exhaust gas control means for engine |
| US4869063A (en) * | 1986-03-07 | 1989-09-26 | Yamaha Hatsudoki Kabushiki Kaisha | Exhaust gas control means for engine |
| US4999999A (en) * | 1987-09-14 | 1991-03-19 | Yamaha Hatsudoki Kabushiki Kaisha | Exhaust gas control device for motorcycles |
| US5271477A (en) * | 1991-02-22 | 1993-12-21 | Yamaha Hatsudoki Kabushiki Kaisha | Oxygen sensor layout |
| WO1994000678A1 (en) * | 1992-06-26 | 1994-01-06 | Flowmaster, Inc. | Muffler assembly with balanced chamber and method |
| US5351481A (en) * | 1992-06-26 | 1994-10-04 | Flowmaster, Inc. | Muffler assembly with balanced chamber and method |
| WO1998020239A1 (en) * | 1996-11-06 | 1998-05-14 | Emitec Gesellschaft Für Emissionstechnologie Mbh | Exhaust gas pipe system for discharging exhaust gases from an internal combustion engine |
| US6863293B2 (en) | 2002-10-22 | 2005-03-08 | Noritaka Kimura | Wheelchair |
| JP2007162653A (en) * | 2005-12-16 | 2007-06-28 | Kawasaki Heavy Ind Ltd | Exhaust device for vehicle and motorcycle having exhaust device |
| WO2010064256A1 (en) * | 2008-12-04 | 2010-06-10 | Rajeev Madhukar Ranadive | Automotive exhaust system |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH057532B2 (en) | 1993-01-29 |
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