JPS636416Y2 - - Google Patents
Info
- Publication number
- JPS636416Y2 JPS636416Y2 JP1981138861U JP13886181U JPS636416Y2 JP S636416 Y2 JPS636416 Y2 JP S636416Y2 JP 1981138861 U JP1981138861 U JP 1981138861U JP 13886181 U JP13886181 U JP 13886181U JP S636416 Y2 JPS636416 Y2 JP S636416Y2
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- guide member
- exhaust pipe
- exhaust
- circumferential surface
- 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
- 238000002485 combustion reaction Methods 0.000 claims description 10
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 238000004880 explosion Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 1
- 239000011295 pitch Substances 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 230000001902 propagating effect Effects 0.000 description 1
Landscapes
- Exhaust Silencers (AREA)
- Flanged Joints, Insulating Joints, And Other Joints (AREA)
- Joints Allowing Movement (AREA)
Description
【考案の詳細な説明】
本考案は内燃機関用排気管の機関への取付構造
の改良に関する。[Detailed Description of the Invention] The present invention relates to an improvement in the mounting structure of an exhaust pipe for an internal combustion engine to the engine.
この種内燃機関用排気管の機関シリンダブロツ
クへの取付は従来第４図及び第５図に示す如き方
法にて成されていた。 Conventionally, an exhaust pipe for an internal combustion engine of this type has been attached to an engine cylinder block by a method as shown in FIGS. 4 and 5.
即ち、第４図において１０７は内管１０８と外
管１０９とで二重管構造に構成された排気管であ
り、排気管１０７はその外管１０９を機関のシリ
ンダブロツク１０２にシール材１１２を介してボ
ルト結合することで取付支持されている。このよ
うに排気管１０７はシリンダブロツク１０２に直
結されているため、排気管１０７の振動はシリン
ダブロツク１０２に直接伝わり、この振動のため
に特に大口径の排気ポート１０４を設けて剛性の
低下したシリンダブロツク１０２が歪む等の不具
合が発生する。 That is, in FIG. 4, reference numeral 107 is an exhaust pipe constructed in a double pipe structure with an inner pipe 108 and an outer pipe 109. It is mounted and supported by bolting. Since the exhaust pipe 107 is directly connected to the cylinder block 102 in this way, the vibration of the exhaust pipe 107 is directly transmitted to the cylinder block 102, and for this vibration, a particularly large-diameter exhaust port 104 is provided to reduce the rigidity of the cylinder. Problems such as distortion of the block 102 occur.
一方、第５図は排気管２０７をシリンダブロツ
ク２０２に弾性支持せしめた例を示す。即ち、シ
リンダブロツク２０２に取付ガイド部材２０５を
結着し、該ガイド部材２０５外周にシール部材２
１２，２１２を介して排気管２０７の端部を嵌合
し、該排気管２０７を取付スプリング２１４にて
前記取付部材２０５に支持せしめている。この本
方法によれば、排気管２０７の振動のシリンダブ
ロツク２０２への伝播は抑制されるが、排気ポー
ト２０４から排出される高圧の排気ガスの一部が
シール部材２１２，２１２を通過して排気管２０
７外へ漏出し、シール性の点で問題があつた。 On the other hand, FIG. 5 shows an example in which the exhaust pipe 207 is elastically supported by the cylinder block 202. That is, the mounting guide member 205 is tied to the cylinder block 202, and the seal member 2 is attached to the outer periphery of the guide member 205.
12 and 212, and the exhaust pipe 207 is supported by the mounting member 205 with a mounting spring 214. According to this method, propagation of the vibrations of the exhaust pipe 207 to the cylinder block 202 is suppressed, but some of the high-pressure exhaust gas discharged from the exhaust port 204 passes through the seal members 212, 212 and is exhausted. tube 20
7. It leaked outside and there was a problem with the sealing performance.
本考案者は排気管、特に内・外管で二重管構造
を成す排気管のシリンダヘツドへの取付構造にお
ける上記問題に鑑み、これを有効に解決すべく本
考案を成したものである。 The inventor of the present invention has devised the present invention in order to effectively solve the above problems in the mounting structure of an exhaust pipe, particularly an exhaust pipe having a double pipe structure including an inner and outer pipe, to a cylinder head.
本考案の目的とする処は、内周部に複数段の減
圧溝を有して成る円筒状の取付ガイド部材をシリ
ンダブロツクの排気ポート部に固着し、前記ガイ
ド部材端部を前記排気管端部より内管と外管との
前記隙間に挿通し、前記ガイド部材内周面と前記
内管外周面との間に周方向間隙間を設けるととも
に、前記ガイド部材外周面と前記外管内周面との
間に該カイド部材外周面と該外管との隙間を閉塞
するシール部材を設け、該外管を弾性取付部材に
て上記カイド部材に弾性支持せしめることによ
り、遮音効果を高め、排気系からシリンダブロツ
クへの振動の伝播を遮断し、シリンダブロツクを
振動から保護するとともに、シリンダブロツクと
排気管との熱膨張差による歪を防止し、更に内・
外管間に流出する排気ガスを減圧し、排気ガスの
漏出を完全に防止し得るようにした内燃機関用排
気管を提供するにある。 The object of the present invention is to fix a cylindrical mounting guide member having a plurality of pressure reducing grooves on the inner periphery to an exhaust port portion of a cylinder block, and connect the end of the guide member to the end of the exhaust pipe. The guide member is inserted into the gap between the inner tube and the outer tube from above, and a circumferential gap is provided between the inner circumferential surface of the guide member and the outer circumferential surface of the inner tube, and the outer circumferential surface of the guide member and the inner circumferential surface of the outer tube are provided. A sealing member is provided to close the gap between the outer peripheral surface of the guide member and the outer pipe, and the outer pipe is elastically supported by the guide member using an elastic mounting member, thereby increasing the sound insulation effect and improving the exhaust system. This prevents vibration from propagating from the exhaust pipe to the cylinder block, protects the cylinder block from vibration, and prevents distortion due to the difference in thermal expansion between the cylinder block and the exhaust pipe.
To provide an exhaust pipe for an internal combustion engine that can completely prevent leakage of exhaust gas by reducing the pressure of exhaust gas flowing between outer pipes.
以下に本考案の好適一実施例を添付図面に基づ
いて詳述する。 A preferred embodiment of the present invention will be described below in detail with reference to the accompanying drawings.
第１図は自動二論車用内燃機関の一部破断側面
図、第２図は第１図Ａ部の拡大詳細図、第３図は
第１図３−３線断面図である。 FIG. 1 is a partially cutaway side view of an internal combustion engine for an automatic vehicle, FIG. 2 is an enlarged detailed view of section A in FIG. 1, and FIG. 3 is a sectional view taken along the line 3-3 in FIG.
第１図中１は機関であり、これのシリンダブロ
ツク２には機関燃焼室３に連通する排気ポート４
が開口しており、この開口部には取付ガイド部材
５が固着されている。この取付ガイド部材５は略
円筒状に成形され、これの内周面には第２図に示
す如く適当ピツチにて周方向減圧溝６が複数列
（図示例では３列）設けられており、又外周側に
はフランジ５ａが一体に設けられている。 In FIG. 1, 1 is an engine, and its cylinder block 2 has an exhaust port 4 that communicates with the engine combustion chamber 3.
is open, and the mounting guide member 5 is fixed to this opening. The mounting guide member 5 is formed into a substantially cylindrical shape, and a plurality of rows (three rows in the illustrated example) of circumferential pressure reducing grooves 6 are provided at appropriate pitches on the inner circumferential surface of the member, as shown in FIG. Further, a flange 5a is integrally provided on the outer peripheral side.
一方、７は内管８と外管９とで二重管構造を成
す排気管であり、これは下方へ向けて湾曲され、
その先は後方（第１図中右方）へ延出している。
内管８は外管９に対して第３図に示す如くその外
管に設けたリブ１０…にて固定され、内・外管
８，９間には一定の周方向隙間Ｓが確保されてい
る。尚第１図中１１は排気チヤンバーである。 On the other hand, 7 is an exhaust pipe having a double pipe structure with an inner pipe 8 and an outer pipe 9, which is curved downward.
The tip extends to the rear (to the right in Figure 1).
The inner tube 8 is fixed to the outer tube 9 by ribs 10 provided on the outer tube as shown in FIG. 3, and a certain circumferential gap S is secured between the inner and outer tubes 8 and 9. There is. Note that 11 in FIG. 1 is an exhaust chamber.
そして排気管７のシリンダブロツク２への取付
は次の如く成されている。即ち、前記取付ガイド
部材５の内部には内管８の端部がガイド部材５の
内周面との間に周方向隙間S1を設けて臨み、内管
８端面とシリンダブロツク５間は隙間S2が設けら
れている。一方、ガイド部材５の外周には外管９
の大径端部がシールリング１２，１２を介して嵌
合し、該外管９外周に固着したブラケツト１３と
前記ガイド部材５のフランジ５ａ間には取付スプ
リング１４が縮装、架設され、この取付スプリン
グ１４は外管９の円周複数箇所に設けられ、外管
９は内管８とともに弾性支持されている。 The exhaust pipe 7 is attached to the cylinder block 2 as follows. That is, the end of the inner tube 8 faces the inside of the mounting guide member 5 with a circumferential gap S1 between the inner peripheral surface of the guide member 5, and there is a gap between the end surface of the inner tube 8 and the cylinder block 5. S2 is provided. On the other hand, an outer tube 9 is provided on the outer periphery of the guide member 5.
A mounting spring 14 is compressed and installed between a bracket 13 fixed to the outer periphery of the outer tube 9 and the flange 5a of the guide member 5, and the large diameter end of the bracket 14 is fitted through seal rings 12, 12. The mounting springs 14 are provided at multiple locations around the circumference of the outer tube 9, and the outer tube 9 is elastically supported together with the inner tube 8.
斯しくて排気管７はシリンダブロツク２に対し
てフローテイング支持されている。 In this way, the exhaust pipe 7 is supported in a floating manner relative to the cylinder block 2.
次に本排気管７の作用及び効果について説明す
る。 Next, the function and effect of the main exhaust pipe 7 will be explained.
機関燃焼によつて生じた高温、高圧の排気ガス
の大部分は外管８内を通過し、排気チヤンバー１
１を経て排気管７の管端より大気中に排出され
る。この場合排気管７は内・外管８，９で二重管
構造を成し、しかもこれらの間には隙間Ｓが形成
されているため、機関燃焼室３中で発生する爆発
音が排気管７外に透過することはなく、この爆発
音は排気管７内で有効に消音される。 Most of the high-temperature, high-pressure exhaust gas generated by engine combustion passes through the outer pipe 8 and exits the exhaust chamber 1.
1 and is discharged into the atmosphere from the end of the exhaust pipe 7. In this case, the exhaust pipe 7 has a double pipe structure with the inner and outer pipes 8 and 9, and a gap S is formed between them, so that the explosion noise generated in the engine combustion chamber 3 is transmitted to the exhaust pipe. This explosion sound is effectively muffled within the exhaust pipe 7 without being transmitted to the outside.
又前記排気ガスの一部は内管８とシリンダブロ
ツク２間の隙間S2から内管８とガイド部材５間の
隙間S1内に流入する。この隙間S1を通過する際、
排気ガスは減圧溝６…の減圧効果により減圧せし
められた後、隙間Ｓに流入することにより更に減
圧される。従つてこの減圧された排気ガスはシー
ルリング１２，１２によつて完全にシールされ、
排気管７の取付部から外部に漏出することがな
い。而して排気ガスは内・外管８，９の隙間Ｓを
経て排気チヤンバー１１に流入し、最終的には排
気管７の管端から大気に排出される。 Further, a portion of the exhaust gas flows from the gap S2 between the inner tube 8 and the cylinder block 2 into the gap S1 between the inner tube 8 and the guide member 5. When passing through this gap S 1 ,
After the exhaust gas is reduced in pressure by the pressure reduction effect of the pressure reduction grooves 6, it flows into the gap S and is further reduced in pressure. Therefore, this reduced pressure exhaust gas is completely sealed by the seal rings 12, 12,
There is no leakage to the outside from the mounting part of the exhaust pipe 7. The exhaust gas then flows into the exhaust chamber 11 through the gap S between the inner and outer pipes 8 and 9, and is finally exhausted to the atmosphere from the end of the exhaust pipe 7.
更に排気管７は前述の如くシリンダブロツク２
に対してフローテイング支持されているため、排
気系の振動がシリンダブロツク２側へ伝播するこ
とがなく、排気ポート４の変形等を防止できる。
また、エンジン振動が排気管７を含む、排気系に
伝達されることがなく、これに起因する振動音の
発生を十分低減できる。また更に、二重構造の排
気管７の外管９内周面と取付ガイド部材外周面と
の間にシール部材１２を設けているため排気ガス
の熱によりシール部材１２が影響を受けにくくな
り、シール性及びシール部材１２の耐久性の向上
を図ることができる。 Furthermore, the exhaust pipe 7 is connected to the cylinder block 2 as described above.
Since the exhaust port 4 is supported in a floating manner, vibrations of the exhaust system are not propagated to the cylinder block 2 side, and deformation of the exhaust port 4 can be prevented.
Further, engine vibrations are not transmitted to the exhaust system including the exhaust pipe 7, and the generation of vibration noise caused by this can be sufficiently reduced. Furthermore, since the seal member 12 is provided between the inner circumferential surface of the outer pipe 9 of the double-structured exhaust pipe 7 and the outer circumferential surface of the mounting guide member, the seal member 12 is less likely to be affected by the heat of the exhaust gas. It is possible to improve the sealing performance and the durability of the seal member 12.
第１図は自動二論車内燃機関の一部破断側面
図、第２図は第１図Ａ部の拡大詳細図、第３図は
第１図３−３線断面図、第４図、第５図は従来の
排気管の取付方法を示す排気管取付部の側断面図
である。
尚図面中１は機関、２はシリンダブロツク、４
は排気ポート、５は取付ガイド部材、６は減圧
溝、７は排気管、８は内管、９は外管、１２はシ
ールリング、１４は取付スプリング、Ｓ，S1，S2
は隙間である。
Fig. 1 is a partially cutaway side view of the internal combustion engine of a dual-purpose automatic vehicle, Fig. 2 is an enlarged detailed view of section A in Fig. 1, Fig. 3 is a sectional view taken along line 3-3 in Fig. 1, Fig. 4, FIG. 5 is a side sectional view of an exhaust pipe attachment part showing a conventional exhaust pipe attachment method. In the drawing, 1 is the engine, 2 is the cylinder block, and 4 is the engine.
is an exhaust port, 5 is a mounting guide member, 6 is a pressure reducing groove, 7 is an exhaust pipe, 8 is an inner pipe, 9 is an outer pipe, 12 is a seal ring, 14 is a mounting spring, S, S 1 , S 2
is a gap.
Claims (1)
重管構造から成る内燃機関用排気管において、 内周面に複数列の減圧溝を有して成る略円筒状
の取付ガイド部材をシリンダブロツクの排気ポー
ト部に固着し、 前記ガイド部材端部を前記排気管端部より内管
と外管との前記隙間に挿通し、 前記ガイド部材内周面と前記内管外周面との間
に周方向間隙間を設けるとともに、 前記ガイド部材外周面と前記外管内周面との間
に該ガイド部材外周面と該外管との隙間を閉塞す
るシール部材を設け、 前記外管を弾性取付部材にて前記取付ガイド部
材に弾性支持せしめたことを特徴とする内燃機関
用排気管。[Scope of Claim for Utility Model Registration] An exhaust pipe for an internal combustion engine consisting of a double pipe structure in which an inner pipe and an outer pipe are formed with a gap in the circumferential direction, the exhaust pipe having a plurality of rows of pressure reducing grooves on the inner circumferential surface. A substantially cylindrical mounting guide member is fixed to the exhaust port of the cylinder block, the end of the guide member is inserted from the end of the exhaust pipe into the gap between the inner pipe and the outer pipe, and the inner circumferential surface of the guide member and A circumferential gap is provided between the outer circumferential surface of the inner tube, and a seal member is provided between the outer circumferential surface of the guide member and the inner circumferential surface of the outer tube to close the gap between the outer circumferential surface of the guide member and the outer tube. An exhaust pipe for an internal combustion engine, characterized in that the outer pipe is elastically supported by the mounting guide member using an elastic mounting member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13886181U JPS5844427U (en) | 1981-09-18 | 1981-09-18 | Exhaust pipe for internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13886181U JPS5844427U (en) | 1981-09-18 | 1981-09-18 | Exhaust pipe for internal combustion engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5844427U JPS5844427U (en) | 1983-03-25 |
| JPS636416Y2 true JPS636416Y2 (en) | 1988-02-23 |
Family
ID=29932073
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13886181U Granted JPS5844427U (en) | 1981-09-18 | 1981-09-18 | Exhaust pipe for internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5844427U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012515306A (en) * | 2009-01-19 | 2012-07-05 | エルリコン ソーラー アクチェンゲゼルシャフト，トリューブバハ | Connecting device for vacuum unit |
| CN106014672A (en) * | 2015-03-30 | 2016-10-12 | 本田技研工业株式会社 | Exhaust passage structure of internal combustion engine |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4606653B2 (en) * | 2001-06-15 | 2011-01-05 | 川崎重工業株式会社 | Flexible connection structure and small planing boat having the connection structure |
| JP6318101B2 (en) * | 2015-02-03 | 2018-04-25 | 本田技研工業株式会社 | Vehicle exhaust system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4713617U (en) * | 1971-03-12 | 1972-10-18 | ||
| JPS5231884U (en) * | 1975-08-29 | 1977-03-05 |
-
1981
- 1981-09-18 JP JP13886181U patent/JPS5844427U/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4713617U (en) * | 1971-03-12 | 1972-10-18 | ||
| JPS5231884U (en) * | 1975-08-29 | 1977-03-05 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012515306A (en) * | 2009-01-19 | 2012-07-05 | エルリコン ソーラー アクチェンゲゼルシャフト，トリューブバハ | Connecting device for vacuum unit |
| CN106014672A (en) * | 2015-03-30 | 2016-10-12 | 本田技研工业株式会社 | Exhaust passage structure of internal combustion engine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5844427U (en) | 1983-03-25 |
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