JPS5915622A - Exhaust device of internal combustion engine - Google Patents
Exhaust device of internal combustion engineInfo
- Publication number
- JPS5915622A JPS5915622A JP12485782A JP12485782A JPS5915622A JP S5915622 A JPS5915622 A JP S5915622A JP 12485782 A JP12485782 A JP 12485782A JP 12485782 A JP12485782 A JP 12485782A JP S5915622 A JPS5915622 A JP S5915622A
- Authority
- JP
- Japan
- Prior art keywords
- exhaust
- rendezvous
- tube
- combustion engine
- internal combustion
- 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
- 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
- F01N13/08—Other arrangements or adaptations of exhaust conduits
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】
この発明は内燃機関の排気装置、特にセミデュアル型の
排気装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an exhaust system for an internal combustion engine, particularly to a semi-dual type exhaust system.
一般に多気筒の内燃機関においては、各シリンダの排気
残圧が他のシリンダの排気ポートに背圧としてかからな
いようにセミデュアル型の排気装置を使用することがあ
る。このようなセミデュアル型の排気装置としては、例
えば第１図に示すようなものが知られており、まず、構
成を説明する。１．２は一端が図示していない内燃機関
のシリンダの排気ポートに連結された排気管であり、こ
れら排気管１．２の他端部は絞り加工により小径部３．
４にされている。Generally, in a multi-cylinder internal combustion engine, a semi-dual type exhaust system is sometimes used to prevent the exhaust residual pressure of each cylinder from being applied as back pressure to the exhaust ports of other cylinders. As such a semi-dual type exhaust system, one shown in FIG. 1, for example, is known, and the configuration will be explained first. 1.2 is an exhaust pipe whose one end is connected to an exhaust port of a cylinder of an internal combustion engine (not shown), and the other end of these exhaust pipes 1.2 is formed into a small diameter portion 3.2 by drawing.
It is set to 4.
これら小径部３．４はエギゾーストランデブーチューブ
５の一端に設けられた孔６．７にそれぞれ挿入され、小
径部３．４とエギゾーストランデブーチューブ５の一端
とは溶接固定されている。エギゾーストランデブーチュ
ーブ５の他端は排気管８を介して大気に開放されており
、排気管８には図示していないマフラ等が介装されてい
る。These small diameter portions 3.4 are respectively inserted into holes 6.7 provided at one end of the exhaust rendezvous tube 5, and the small diameter portions 3.4 and one end of the exhaust rendezvous tube 5 are fixed by welding. The other end of the exhaust rendezvous tube 5 is open to the atmosphere via an exhaust pipe 8, and the exhaust pipe 8 is equipped with a muffler or the like (not shown).
しかしながら、このような従来の内燃機関の排気装置に
あっては、排気管１．２の他端部を絞り加工により小径
部３．４とし、該小径部３．４をエギゾーストランデブ
ーチューブ５の孔６．７に挿入し溶接していたため小径
部３、４′に亀裂が生じやすいという問題点かあづた。However, in such a conventional exhaust system for an internal combustion engine, the other end of the exhaust pipe 1.2 is formed into a small diameter portion 3.4 by drawing, and the small diameter portion 3.4 is inserted into the hole of the exhaust rendezvous tube 5. Since it was inserted into 6.7 and welded, there was a problem that cracks were likely to occur in the small diameter parts 3 and 4'.
すなわち、小径部３．４は溶接による熱変形を受けやす
いうえ、絞られているため断面係数も小さく外力を受け
ると亀裂が生じやすかった。That is, the small-diameter portion 3.4 is susceptible to thermal deformation due to welding, and since it is narrowed, its section modulus is small and cracks are likely to occur when subjected to external force.
また、小径部３．４は上流部分に比べ排気ガスの通路の
断面積が小さいため排気ガスの受ける管路抵抗が大きく
なり、内燃機関の排気ポートに加わる背圧が増大すると
いう問題点もあった。Furthermore, since the cross-sectional area of the exhaust gas passage in the small-diameter portion 3.4 is smaller than that in the upstream portion, the pipe resistance experienced by the exhaust gas increases, and there is also the problem that the back pressure applied to the exhaust port of the internal combustion engine increases. Ta.
本発明はこれらの問題点に着目してなされたものであり
、内燃機関のシリンダの排気ポートに連結された複数の
排気管の他端部を大径に形成するとともにエギゾースト
ランデブーチューブを排気管に挿入し各排気管とエギゾ
ーストランデブーチューブとを固着した内燃機関の排気
装置を提供することにより上記問題点を解決することを
目的としている。The present invention has been made in view of these problems, and includes forming the other ends of a plurality of exhaust pipes connected to the exhaust port of the cylinder of an internal combustion engine to have a large diameter, and connecting the exhaust rendezvous tube to the exhaust pipe. It is an object of the present invention to solve the above-mentioned problems by providing an exhaust system for an internal combustion engine in which each exhaust pipe and exhaust rendezvous tube are inserted and fixed.
以下、この発明を図面に基づき説明する。Hereinafter, this invention will be explained based on the drawings.
第２図はこの発明の第１実施例を示す図であり、まず、
構成を説明する。１１．１２は一端が図示していない内
燃機関のシリンダの排気ポートに連結された排気管であ
り、これら排気管１１．１２の他端部は大径部１３、Ｉ
４に形成されている。FIG. 2 is a diagram showing a first embodiment of the present invention, and first,
Explain the configuration. 11.12 is an exhaust pipe whose one end is connected to an exhaust port of a cylinder of an internal combustion engine (not shown), and the other end of these exhaust pipes 11.12 is a large diameter portion 13, I
4.
Ｉ５は大径部１３．１４に連結されたエギゾーストラン
デブーチューブであり、鋳造により一体成形されている
。エギゾーストランデブーヂューブ１５の一端には切込
部１６が形成されており、大径部１３．１４にそれぞれ
挿入可能なように分岐している。大径部１３．１４とエ
ギゾーストランデブーチューブ１５の一端とは溶接固定
されており、エギゾーストランデブーチューブ１５の他
端は排気管１７を介して大気に開放されている。排気管
１７には図示していないマフラ等が介装されている。I5 is an exhaust rendezvous tube connected to the large diameter portion 13, 14, and is integrally formed by casting. A notch 16 is formed at one end of the exhaust tranquil tube 15, and the notch 16 is branched so as to be insertable into the large diameter portions 13 and 14, respectively. The large diameter portion 13.14 and one end of the exhaust rendezvous tube 15 are fixed by welding, and the other end of the exhaust rendezvous tube 15 is opened to the atmosphere via the exhaust pipe 17. The exhaust pipe 17 is provided with a muffler or the like (not shown).
次に作用について説明する。内燃機関が始動されると、
各シリンダの排気ポートから排出される排気ガスは排気
管１１１２を通過し、エギゾーストランデブーチューブ
１５で合流した後排気管１７およびマフラ等を通過して
大気中に排出される。このとき、排気管１１．１２の他
端部を大径部１３．１４にすることにより、排気管１１
．１２とエギゾーストランデブーチューブ１５との接合
部は従来のように排気管１１、ＩＺの断面積が減少して
いないため排気ガスの受ける管路抵抗は増加せず、排気
ポートに加わる背圧も従来に比べ減少し、また、その断
面係数を大きくすることができ、エギゾーストランデブ
ーチューブ１５に溶接された後外力が加わっても亀裂が
生じることを防止することができる。Next, the effect will be explained. When the internal combustion engine is started,
Exhaust gas discharged from the exhaust port of each cylinder passes through an exhaust pipe 1112, joins at an exhaust rendezvous tube 15, passes through an exhaust pipe 17, a muffler, etc., and is discharged into the atmosphere. At this time, by making the other end of the exhaust pipe 11.12 a large diameter part 13.14, the exhaust pipe 11.
．． 12 and the exhaust rendezvous tube 15, the cross-sectional area of the exhaust pipe 11 and IZ is not reduced as in the conventional case, so the pipe resistance to the exhaust gas does not increase, and the back pressure applied to the exhaust port is also the same as before. In addition, the section modulus can be increased, and cracks can be prevented from occurring even if an external force is applied after being welded to the exhaust rendezvous tube 15.
第３図はこの発明の第２実施例であり、第１実施例と同
一構成部分には同一符号のみ付して説明は省略する。１
８はプレス成形された上半分と下半分とをフランジ部１
９で接合することにより形成したエギゾーストランデブ
ーチューブである。このエギゾーストランデブーチュー
ブ１８の一端も切込部、２０で分岐しており、それぞれ
大径部１３．１４に挿入された後、溶接されている。FIG. 3 shows a second embodiment of the present invention, and the same components as in the first embodiment are given the same reference numerals, and the explanation thereof will be omitted. 1
8 connects the press-formed upper and lower halves to the flange part 1
This is an exhaust rendezvous tube formed by joining 9. One end of the exhaust rendezvous tube 18 is also branched at a notch 20, which is inserted into the large diameter portion 13, 14 and then welded.
このように、第２実施例のエギゾーストランデブーチュ
ーブ１８はプレス成形された上半分と下半分を接合して
形成しているため容易にその一端を分岐した形状に形成
することができる。As described above, since the exhaust rendezvous tube 18 of the second embodiment is formed by joining the press-molded upper and lower halves, one end thereof can be easily formed into a branched shape.
以上説明してきたように、この発明によれば内燃機関の
シリンダの排気ポートに連結された複数の排気管の他端
部を大径に形成するとと−もにエギゾーストランデブー
チューブを排気管に挿入し各排気管とエギゾーストラン
デブーチューブとを固着するようにしたため、排気管の
内径が絞られることなく、連結部の断面係数を大きくす
ることができ内燃機関の排気ポートに加わる背圧を低下
させることができるうえ、排気管とエギゾーストランデ
ブーチューブとの接合部の剛性を高め、亀裂の発生を防
止することができる。As explained above, according to the present invention, the other ends of the plurality of exhaust pipes connected to the exhaust ports of the cylinders of an internal combustion engine are formed to have a large diameter, and the exhaust rendezvous tube is inserted into the exhaust pipes. Since each exhaust pipe and the exhaust rendezvous tube are firmly attached, the inner diameter of the exhaust pipe is not restricted, and the section modulus of the connecting part can be increased, reducing the back pressure applied to the exhaust port of the internal combustion engine. In addition, it is possible to increase the rigidity of the joint between the exhaust pipe and the exhaust rendezvous tube and prevent the occurrence of cracks.
第１図は従来の排気装置を示す平面図、第２図はこの発
明の第１実施例を示す平面図、第３図はこの発明の第２
実施例を示す平面図である。
１１．１２−−−−排気管、
１３．１４−−一〜−−大径部、
１５、ｔｓ −−−−−一エギゾーストランデブーチュ
ーブ。FIG. 1 is a plan view showing a conventional exhaust system, FIG. 2 is a plan view showing a first embodiment of the present invention, and FIG. 3 is a plan view showing a second embodiment of the present invention.
FIG. 2 is a plan view showing an example. 11.12---Exhaust pipe, 13.14---1~---Large diameter part, 15, ts---1 exhaust rendezvous tube.
Claims (1)
数の排気管と、一端が各排気管の他端に連結されたエギ
ゾーストランデブーチューブとを備えた内燃機関の排気
装置において、前記各排気管の他端部を大径に形成する
とともに該他端部にエギゾーストランデブーチューブの
一端を挿入し各排気管とエギゾーストランデブーチュー
ブとを固着したことを特徴とする内燃機関の排気装置。In an exhaust system for an internal combustion engine, the exhaust system includes a plurality of exhaust pipes each having one end connected to an exhaust port of a cylinder of the internal combustion engine, and an exhaust rendezvous tube having one end connected to the other end of each exhaust pipe. An exhaust system for an internal combustion engine, characterized in that the other end is formed to have a large diameter, one end of an exhaust rendezvous tube is inserted into the other end, and each exhaust pipe and the exhaust rendezvous tube are firmly fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12485782A JPS5915622A (en) | 1982-07-16 | 1982-07-16 | Exhaust device of internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12485782A JPS5915622A (en) | 1982-07-16 | 1982-07-16 | Exhaust device of internal combustion engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5915622A true JPS5915622A (en) | 1984-01-26 |
Family
ID=14895809
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12485782A Pending JPS5915622A (en) | 1982-07-16 | 1982-07-16 | Exhaust device of internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5915622A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5572868A (en) * | 1994-02-21 | 1996-11-12 | Aisin Takaoka Co., Ltd. | Exhaust manifold |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5696113A (en) * | 1979-09-06 | 1981-08-04 | Zeuna Staerker Gmbh Co Kg | Bend for sixxcylinder parallel engine |
-
1982
- 1982-07-16 JP JP12485782A patent/JPS5915622A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5696113A (en) * | 1979-09-06 | 1981-08-04 | Zeuna Staerker Gmbh Co Kg | Bend for sixxcylinder parallel engine |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5572868A (en) * | 1994-02-21 | 1996-11-12 | Aisin Takaoka Co., Ltd. | Exhaust manifold |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH0543227Y2 (en) | ||
| US9416719B2 (en) | Exhaust manifold with insulation sleeve | |
| US4930817A (en) | Structural part comprising a flange and at least one exhaust gas tube, in particular exhaust gas bend, and process for the production thereof | |
| CN112696258B (en) | Control method for thermal deformation design of exhaust manifold | |
| JPS5915622A (en) | Exhaust device of internal combustion engine | |
| JPH06117242A (en) | Connection structure of exhaust system in internal combustion engine | |
| JP4568582B2 (en) | Exhaust manifold in multi-cylinder internal combustion engine | |
| JP3566064B2 (en) | Exhaust gas purifier in a multi-cylinder internal combustion engine | |
| JPH0544507Y2 (en) | ||
| JP2533929Y2 (en) | Scarf | |
| JPH0515533Y2 (en) | ||
| JP2540987Y2 (en) | Engine exhaust gas recirculation system | |
| JPH06346730A (en) | Exhaust manifold for internal combustion engine | |
| JPH01138311A (en) | Exhaust passage structure of engine | |
| JPS61250326A (en) | Exhaust manifold for internal-combustion engine | |
| JP2000154721A (en) | Structure of exhaust manifold in multicylinder internal combustion engine | |
| JPS5842320U (en) | Internal combustion engine exhaust system | |
| JP2577416Y2 (en) | Exhaust muffler structure | |
| JPH0521623Y2 (en) | ||
| JPH0269019U (en) | ||
| JPH053707Y2 (en) | ||
| JPS6128007Y2 (en) | ||
| JPH0111939Y2 (en) | ||
| JPH01321065A (en) | Method for forming suction pipe integrated type passage for internal combustion engine | |
| JP2563904B2 (en) | Engine exhaust system |