JPH0445649B2 - - Google Patents
Info
- Publication number
- JPH0445649B2 JPH0445649B2 JP6268084A JP6268084A JPH0445649B2 JP H0445649 B2 JPH0445649 B2 JP H0445649B2 JP 6268084 A JP6268084 A JP 6268084A JP 6268084 A JP6268084 A JP 6268084A JP H0445649 B2 JPH0445649 B2 JP H0445649B2
- Authority
- JP
- Japan
- Prior art keywords
- outer box
- exhaust pipe
- pipe
- sound
- tail 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.)
- Expired
Links
- 230000003584 silencer Effects 0.000 claims description 17
- 239000011358 absorbing material Substances 0.000 claims description 12
- 239000000835 fiber Substances 0.000 claims description 8
- 238000002485 combustion reaction Methods 0.000 claims description 5
- 238000005245 sintering Methods 0.000 claims description 2
- 238000004891 communication Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 8
- 239000011810 insulating material Substances 0.000 description 6
- 238000009413 insulation Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000005192 partition Methods 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 238000000465 moulding Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000011491 glass wool Substances 0.000 description 2
- 235000019353 potassium silicate Nutrition 0.000 description 2
- 239000003566 sealing material Substances 0.000 description 2
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 241000270281 Coluber constrictor Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- OQZCSNDVOWYALR-UHFFFAOYSA-N flurochloridone Chemical compound FC(F)(F)C1=CC=CC(N2C(C(Cl)C(CCl)C2)=O)=C1 OQZCSNDVOWYALR-UHFFFAOYSA-N 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 239000012784 inorganic fiber Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
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
- F01N13/1861—Construction facilitating manufacture, assembly, or disassembly the assembly using parts formed by casting or moulding
-
- 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
- F01N13/16—Selection of particular materials
-
- 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
- F01N2470/02—Tubes being perforated
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】
本発明はエンジン等の内燃機関の排気装置の一
部をなす消音器に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a muffler that forms part of an exhaust system for an internal combustion engine such as an engine.
従来から、内燃機関の燃焼に伴ない発生する燃
焼ガス（排気ガス）を外部に直接排出すると、大
きな排気管が生じるため、一旦排気ガスを消音器
内に導入して膨張させ、排気ガスが保有するエネ
ルギーを消耗せしめることで排気音の低減を図る
ようにしている。 Conventionally, when the combustion gas (exhaust gas) generated by combustion in an internal combustion engine is directly discharged to the outside, a large exhaust pipe is created. The exhaust noise is reduced by consuming the energy that is generated by the engine.
ここで一般的な消音器はこの外箱を鋼板にて構
成しているため、ある程度の遮音性は有しても、
外箱自体に吸音特性はなく、したがつて十分な消
音効果を発揮することができない。 Since the outer case of common silencers is made of steel plates, even though they have a certain degree of sound insulation,
The outer box itself does not have sound absorbing properties, and therefore cannot exhibit a sufficient sound deadening effect.
そこで、第１図及び第２図に示す如く、消音器
の外箱１を成形吸音材にて構成し、この外箱１の
前端部にシール部材２を介してエキゾーストパイ
プ３を結着し、後端部にシール部材４を介してテ
ールパイプ５を結着し、更に場合によつては第１
図に示す如く、外箱１の内部に連通パイプ６が貫
通したセパレータ７を設け、外箱１内を複数の膨
張室に区画した構造の消音器が考えらえる。 Therefore, as shown in FIGS. 1 and 2, the outer box 1 of the silencer is made of molded sound-absorbing material, and the exhaust pipe 3 is connected to the front end of the outer box 1 via a sealing member 2. A tail pipe 5 is connected to the rear end via a seal member 4, and in some cases, a first
As shown in the figure, a silencer can be considered in which a separator 7 through which a communicating pipe 6 passes is provided inside an outer box 1, and the inside of the outer box 1 is divided into a plurality of expansion chambers.
このように、消音器の外箱１を成形吸音材にて
構成すれば、確かに消音器としての消音効果は向
上するが、エキゾーストパイプ、テールパイプ或
いは連通パイプ等の固定において問題が生じる。
即ち、従来にあつては外箱は鋼板製であるため、
エキゾーストパイプ等の内部構成部材と外箱とは
溶接によつて強固に結着せしめられるため、熱及
び振動により容易に外箱との結合部が破損するこ
とはないが、外箱を成形吸音材にて構成すると、
外箱とエキゾーストパイプ等の内部構成部材とを
溶接することができないので、耐熱性接着剤等に
より外箱と内部構成部材とを接合しなければなら
ない。しかしながら接着剤による接合は溶接に比
べ強度的に劣ることは否めず、このため、熱或は
振動の影響により内部構成部材の接合部において
外箱が破損するおそれがある。 As described above, if the outer box 1 of the silencer is made of molded sound absorbing material, the noise reduction effect of the silencer is certainly improved, but problems arise in fixing the exhaust pipe, tail pipe, communication pipe, etc.
In other words, since the outer box was conventionally made of steel plate,
Internal components such as exhaust pipes and the outer case are firmly connected by welding, so the joints with the outer case are not easily damaged by heat and vibration, but the outer case is made of molded sound-absorbing material. When configured with
Since it is not possible to weld the outer box and internal components such as an exhaust pipe, the outer box and internal components must be joined using a heat-resistant adhesive or the like. However, it is undeniable that bonding using adhesive is inferior to welding in terms of strength, and as a result, there is a risk that the outer case may be damaged at the bonded portion of the internal components due to the effects of heat or vibration.
本発明は上述した問題点に鑑み成したものであ
り、その目的とする処は外箱を成形吸音材にて構
成した場合であつても、その全体的強度はもとよ
り、特にエキゾーストパイプ、テールパイプ等の
内構成部材と外箱との結合部の強度を大巾に向上
し得るようにした内燃機関用消音器を提供するに
ある。 The present invention has been made in view of the above-mentioned problems, and its purpose is not only to improve the overall strength of the outer case even when the outer case is made of molded sound absorbing material, but also to improve the overall strength of the outer case, especially for the exhaust pipe and tail pipe. An object of the present invention is to provide a muffler for an internal combustion engine, which can greatly improve the strength of the joint between an inner component member and an outer case.
この目的を達成すべく本発明は、消音器の外箱
はマツト状繊維を加圧焼成して形成された成形吸
音材からなり、且つ、外側が成形面となり、内側
が多孔質層となるとともに、当該外箱に接合され
るエキゾーストパイプ、テールパイプ等の内部構
成部材を一体物にて形成し、又は溶接にて直接的
に若しくは連結部材を介して間接的に結合するこ
とで、内部構成部材を一体化せしめたことをその
要旨とする。 In order to achieve this object, the present invention provides that the outer box of the silencer is made of a molded sound-absorbing material formed by pressure-sintering mat-like fibers, and that the outside is a molded surface and the inside is a porous layer. , by forming the internal components such as the exhaust pipe and tail pipe that are joined to the outer box as one piece, or by connecting them directly by welding or indirectly through a connecting member, the internal components can be The gist of this is that the two have been integrated.
以下に本発明の実施例を第３図乃至第７図に基
いて説明する。 Embodiments of the present invention will be described below with reference to FIGS. 3 to 7.
第３図は本発明に係る消音器１０の内部構造を
示す縦断面図であり、消音器１０の外箱１１は成
形吸音材からなる左右の分割体を耐熱性接着剤を
介して接合してなり、この分割体の成型方法の一
例としては以下の如きである。 FIG. 3 is a longitudinal cross-sectional view showing the internal structure of the silencer 10 according to the present invention. An example of a method for molding this divided body is as follows.
先ず、ガラス長繊維又はセラミツク繊維等の無
機繊維或いはポリエステル等の有機長繊維を適当
な長さに切断して混合し、これにローラ加圧及び
ニードリングを施しマツト状繊維とし、このマツ
ト状繊維に水ガラス等のバインダーを含浸せしめ
た後、所定形状つまり分割体を形成し得る成型面
をもつ型内にマツト状繊維を入れて加圧焼成す
る。すると、高温の型成形面と接する部分が硬質
層（タイト層）１１ｂ他の部分が多孔質層（ポー
ラス層）１１ａとなつた分割体が得られる。尚、
硬質層１１ｂの厚さを厚くし、硬度を高めるには
例えば、マツト状繊維の表面にエポキシ樹脂等の
熱硬化性樹脂を水ガラスとは別にバインダーとし
て含浸せしめて焼成するるか、或いは焼成後に熱
可塑性樹脂を塗布するようにしてもよい。 First, long glass fibers, inorganic fibers such as ceramic fibers, or organic long fibers such as polyester are cut into appropriate lengths and mixed, and this is subjected to roller pressure and needling to form pine-like fibers. After the fibers are impregnated with a binder such as water glass, the mat-like fibers are placed in a mold having a molding surface capable of forming a predetermined shape, that is, a divided body, and baked under pressure. Then, a divided body is obtained in which the portion in contact with the hot molding surface is a hard layer (tight layer) 11b, and the other portion is a porous layer 11a. still,
In order to increase the thickness and hardness of the hard layer 11b, for example, the surface of the pine-like fibers is impregnated with a thermosetting resin such as epoxy resin as a binder separately from water glass, and then fired, or after firing. A thermoplastic resin may also be applied.
そして、外箱１１内には１本のパイプ材１２が
挿通されている。このパイプ材１２は後部を小径
部とし、他の部分を大径部とし、大径部内を隔板
１３，１４にて区画している。而して、大径部の
隔板１３よりも上流側（図中左側）にはエキゾー
ストパイプ部１２ａが、大径部の隔板１３，１４
間には連通パイプ部１２ｂが、隔板１４よりも下
流の小径部にはテールパイプ部１２ｃがそれぞれ
形成される。 A piece of pipe material 12 is inserted into the outer box 11. This pipe material 12 has a small diameter portion at the rear and a large diameter portion at the other portion, with the large diameter portion being partitioned by partition plates 13 and 14. The exhaust pipe section 12a is located upstream of the large-diameter partition plate 13 (on the left side in the figure), and the large-diameter partition plate 13, 14
A communication pipe portion 12b is formed between them, and a tail pipe portion 12c is formed at a small diameter portion downstream of the partition plate 14.
また、エキゾーストパイプ部１２ａ外周には環
状のシール板１５が固定され、テールパイプ部１
２ｃの外周には環状のシール板１６が固着され、
シール板１５を介してエキゾーストパイプ部１２
ａは外箱１１の前端部内側に固定され、シール板
１６を介てテールパイプ部１２ｃは外箱１１の後
端部内側に固定される。更に連通パイプ部１２ｂ
の外周には一対のセパレーク板１７，１７を固着
するとともに、これらセパレー板１７，１７間に
グラスウール等の吸音断熱材１８を介在せしめ、
外箱１１内を第１膨張室１９及び第２膨張室２０
に区画している。またセパレータ板１７，１７の
外周の一部は分割体の接合部内側に当接する長尺
のシール板２１に溶接され、このシール板２１の
両端は前記シール板１５，１６にそれぞれ溶接さ
れている。 Further, an annular seal plate 15 is fixed to the outer periphery of the exhaust pipe portion 12a, and the tail pipe portion 1
An annular seal plate 16 is fixed to the outer periphery of 2c,
Exhaust pipe section 12 via seal plate 15
a is fixed to the inside of the front end of the outer box 11, and the tail pipe part 12c is fixed to the inside of the rear end of the outer box 11 via the seal plate 16. Furthermore, the communication pipe section 12b
A pair of separate plates 17, 17 are fixed to the outer periphery of the plate, and a sound absorbing and heat insulating material 18 such as glass wool is interposed between these separate plates 17, 17.
The inside of the outer box 11 is a first expansion chamber 19 and a second expansion chamber 20.
It is divided into Further, a part of the outer periphery of the separator plates 17, 17 is welded to a long seal plate 21 that abuts on the inside of the joint of the divided body, and both ends of this seal plate 21 are welded to the seal plates 15, 16, respectively. .
一方、エキゾーストパイプ部１２ａには第１膨
張室１９に開口する噴出し穴２２を形成し、連通
パイプ部１２ｂには第１膨張室１９に開口する流
入穴２３、第２膨張室２０に開口する噴出し穴２
４を形成し、テールパイプ部１２ｃには第２膨張
室２０に関口する流入穴２５を形成している。更
に外箱１１の前端部内側とエキゾーストパイプ部
１２ａ外周との間、及び外箱１１の後端部内側と
テールパイプ部１２ｃ外周との間にはグラスウー
ル等の吸音断熱材１８を介在さしめ、の吸音断熱
材１８と接するエキゾーストパイプ部１２ａ連通
パイプ部１２ｂ及びテールパイプ部１２ｃには多
数の吸音用小孔２６…を形成し、更に外箱１１の
前端面及び後端面にはガスシール２７，２７を埋
設している。 On the other hand, the exhaust pipe section 12a is formed with a blowout hole 22 that opens into the first expansion chamber 19, and the communication pipe section 12b is formed with an inlet hole 23 that opens into the first expansion chamber 19 and an inflow hole 23 that opens into the second expansion chamber 20. Spout hole 2
4, and an inflow hole 25 that connects to the second expansion chamber 20 is formed in the tail pipe portion 12c. Further, a sound absorbing and insulating material 18 such as glass wool is interposed between the inside of the front end of the outer box 11 and the outer periphery of the exhaust pipe section 12a, and between the inside of the rear end of the outer box 11 and the outer periphery of the tail pipe section 12c. A large number of sound-absorbing small holes 26 are formed in the exhaust pipe part 12a, the communication pipe part 12b, and the tail pipe part 12c, which are in contact with the sound-absorbing and insulating material 18, and gas seals 27, 27 are buried.
以上の如く消音器１０を構成することにより以
下の如き具体的効果が発揮される。先ず、エキゾ
ーストパイプ部１２ａ、連通パイプ部１２ｂテー
ルパイプ部１２ｃを１本のパイプ材１２を区画す
ることで形成したため、一体化が図れ、外箱１１
を成型吸音材で構成した場合であつても、外箱１
１とエキゾーストパイプ部等の内部構成部材との
結合部に作用する熱及び振動の影響が分散され、
消音器全体としての強度が向上する。また、エキ
ゾーストパイプ部１２ａ、連通パイプ部１２ｂ、
テールパイプ部１２ｃ等の内部構成部材を一体化
したため、組付性も良くなる。更に外箱１１と各
パイプ部との間に吸音断熱材１８を介在させ、且
つこれら吸音断熱材１８と接する部分のパイプ部
に吸音用の小孔２６を形成したため、更なる吸音
及び断熱効果の向上が図れ、またセパレータを構
成する吸音断熱材と対応する位置の外箱１１に取
付ステー２８を一体的に形成するようにすれば、
取付ステー２８への熱伝達を少なくできる。 By configuring the silencer 10 as described above, the following specific effects are exhibited. First, since the exhaust pipe section 12a, the communication pipe section 12b, and the tail pipe section 12c are formed by dividing one pipe material 12, they can be integrated, and the outer box 11
Even if the outer box 1 is made of molded sound-absorbing material,
The effects of heat and vibration that act on the joint between 1 and internal components such as the exhaust pipe section are dispersed,
The strength of the silencer as a whole is improved. In addition, the exhaust pipe part 12a, the communication pipe part 12b,
Since the internal components such as the tail pipe portion 12c are integrated, ease of assembly is improved. Furthermore, sound-absorbing and heat-insulating materials 18 are interposed between the outer box 11 and each pipe section, and sound-absorbing small holes 26 are formed in the pipe portions in contact with these sound-absorbing and heat-insulating materials 18, so that further sound absorption and heat insulation effects are achieved. This can be improved by integrally forming the mounting stay 28 on the outer box 11 at a position corresponding to the sound-absorbing and heat-insulating material constituting the separator.
Heat transfer to the mounting stay 28 can be reduced.
第４図は別実施例に係る消音器３０の縦断面
図、第５図は第４図のＡ−Ａ線断面図であり、外
箱３１は成型吸音材からなり、内側を吸音性及び
断熱性に優れた多孔質層３１ａ、外側を遮音性及
び剛性に優れた硬質器３１ｂとしている。 FIG. 4 is a vertical sectional view of a silencer 30 according to another embodiment, and FIG. 5 is a sectional view taken along the line A-A in FIG. The porous layer 31a has excellent properties, and the outside is made of a hard container 31b that has excellent sound insulation properties and rigidity.
そして、外箱３１の前端部には耐熱性シール材
３２を介してエキゾーストパイプ３３が挿通保持
され、外箱３１の後端部には同じく耐熱性シール
材３２を介してテールパイプ３４が挿通保持され
ている。ここで、本実施例にあつては、外箱３１
内の膨張室３５を複数に区画していないため、消
音器３０の内部構成部材はエキゾーストパイプ３
３とテールパイプ３４ということになる。 An exhaust pipe 33 is inserted and held in the front end of the outer box 31 via a heat-resistant sealing material 32, and a tail pipe 34 is also inserted and held in the rear end of the outer box 31 via a heat-resistant sealing material 32. has been done. Here, in this embodiment, the outer box 31
Since the expansion chamber 35 inside is not divided into multiple sections, the internal components of the silencer 30 are the exhaust pipe 3.
3 and tail pipe 34.
更に、外箱３１内において、エキゾーストパイ
プ３３後端部とテールパイプ３４前端部とは２本
のステー３６，３６にて結合され、内部構成部材
であるエキゾーストパイプ３３及びテールパイプ
３４は一体化せしめられている。このように、エ
キゾーストパイプ３３とテールパイプ３４とを連
結一体化することで内部構成部材の強度アツプが
図れ、消音器に作用する熱及び振動によりエキゾ
ーストパイプ３３或いはテールパイプ３４と外箱
３１との結合部に破損が生じることがない。 Further, inside the outer box 31, the rear end of the exhaust pipe 33 and the front end of the tail pipe 34 are connected by two stays 36, 36, so that the internal components of the exhaust pipe 33 and the tail pipe 34 are integrated. It is being In this way, by connecting and integrating the exhaust pipe 33 and the tail pipe 34, the strength of the internal components can be increased, and the exhaust pipe 33 or tail pipe 34 and the outer box 31 can be No damage occurs to the joint.
第６図及び第７図はエキゾーストパイプ３３と
テールパイプ３４とを一体化するための別手段を
示したものであり、第６図に示す例にあつては、
エキゾーストパイプ３３の後端部にテールパイプ
３４の前端部を直接溶接し、第７図に示す例にあ
つては、エキゾーストパイプ３３の後端部にテー
ルパイプ３４の前端部を挿入して溶接している。
そして、第７図に示す例にあつては大径のエキゾ
ーストパイプ３３自体に噴出し穴３７を設け、大
径のエキゾーストパイプ３３と小径のテールパイ
プ３４との間に流入穴３８を形成している。 6 and 7 show another means for integrating the exhaust pipe 33 and the tail pipe 34, and in the example shown in FIG. 6,
The front end of the tail pipe 34 is directly welded to the rear end of the exhaust pipe 33, and in the example shown in FIG. 7, the front end of the tail pipe 34 is inserted and welded to the rear end of the exhaust pipe 33. ing.
In the example shown in FIG. 7, a blowout hole 37 is provided in the large diameter exhaust pipe 33 itself, and an inflow hole 38 is formed between the large diameter exhaust pipe 33 and the small diameter tail pipe 34. There is.
第６図及び第７図に示す如く、消音器の内部構
成部材であるエキゾーストパイプ３３とテールパ
イプ３４を直接溶接して一体化せしめても内部構
成部材全体の強度が向上する。 As shown in FIGS. 6 and 7, the strength of the entire internal component can be improved even if the exhaust pipe 33 and tail pipe 34, which are the internal components of the muffler, are directly welded and integrated.
以上に説明した如く本発明によれば、同一部材
で形成した外箱の外側を化粧面にしたので良好な
外観が得られ、内側を吸音材をなす多孔質層にし
たので排気音を効果的に低減でき、非金属材料を
用いたことから軽量化が図れ、錆びることもない
ので耐久性の向上も図れ、更に、断熱特性が高い
ので近接する他部品の熱害も防止することができ
る。例えば、レーサー用オートバイに好適な排気
管を得ることができる。又、消音器の内部構成部
材であるエキゾーストパイプ、連通パイプ或いは
テールパイプ等を、１つの部材で構成し、又は、
ステーで連結し、若しくは直接溶接することによ
り一体化したので、内部構成部材全体としての強
度が向上する。したがつて、消音器の外箱を成型
吸音材にて形成しても外箱と内部構成部材との結
合部が熱及び振動によつて破損することを防止す
ることができ、消音効果と剛性に優れ且つ軽量な
消音器を得ることができる等多くの効果を発揮す
る。 As explained above, according to the present invention, the outside of the outer box made of the same material is made a decorative surface, so a good appearance can be obtained, and the inside is made of a porous layer that acts as a sound absorbing material, which effectively reduces exhaust noise. Since non-metallic materials are used, the weight can be reduced, and since it does not rust, durability can be improved.Furthermore, since it has high heat insulation properties, it can prevent heat damage to other parts in the vicinity. For example, an exhaust pipe suitable for racer motorcycles can be obtained. Also, the internal components of the silencer, such as the exhaust pipe, communication pipe, tail pipe, etc., are composed of one member, or
Since they are integrated by connecting with stays or by direct welding, the strength of the internal components as a whole is improved. Therefore, even if the outer box of the silencer is made of molded sound-absorbing material, the joint between the outer box and the internal components can be prevented from being damaged by heat and vibration, and the sound damping effect and rigidity can be improved. It exhibits many effects such as being able to obtain a lightweight silencer with excellent performance.
第１図及び第２図は外箱を成型吸音材で構成し
た消音器の縦断面図、第３図は本発明に係る消音
器の縦断面図、第４図は別実施例に係る消音器の
縦断面図、第５図は第４図のＡ−Ａ線断面図、第
６図及び第７図はエキゾーストパイプとテールパ
イプの結合例を示す断面図である。
尚、図面中１１ａは多孔質層、１１ｂは硬質
層、１０，３０は消音器、１１，３１は外箱、１
２はパイプ、１２ａ，１２ｂ，１２ｃ，３３，３
４は、は内部構成部材、３６はステーである。
Figures 1 and 2 are longitudinal sectional views of a silencer whose outer box is made of molded sound absorbing material, Figure 3 is a longitudinal sectional view of a silencer according to the present invention, and Figure 4 is a silencer according to another embodiment. 5 is a sectional view taken along the line A-A in FIG. 4, and FIGS. 6 and 7 are sectional views showing an example of how an exhaust pipe and a tail pipe are connected. In addition, in the drawing, 11a is a porous layer, 11b is a hard layer, 10 and 30 are silencers, 11 and 31 are outer boxes, and 1
2 is a pipe, 12a, 12b, 12c, 33, 3
4 is an internal component, and 36 is a stay.
Claims (1)
パイプ等の内部構成部材を結合してなる消音器に
おいて、前記外箱はマツト状繊維を加圧焼成して
形成された成形吸音材からなるとともに、外側が
成形面、内側が多孔質層を構成し、また前記エキ
ゾーストパイプ或いはテールパイプ等の内部構成
部材は一体化せしめられていることを特徴とする
内燃機関用消音器。1. In a silencer formed by connecting an internal component such as an exhaust pipe or a tail pipe to an outer box, the outer box is made of a molded sound-absorbing material formed by pressure-sintering pine-like fibers, and the outside is 1. A muffler for an internal combustion engine, characterized in that a surface and an inner side constitute a porous layer, and internal components such as the exhaust pipe or tail pipe are integrated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6268084A JPS60206921A (en) | 1984-03-30 | 1984-03-30 | Muffler for internal-combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6268084A JPS60206921A (en) | 1984-03-30 | 1984-03-30 | Muffler for internal-combustion engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60206921A JPS60206921A (en) | 1985-10-18 |
| JPH0445649B2 true JPH0445649B2 (en) | 1992-07-27 |
Family
ID=13207238
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6268084A Granted JPS60206921A (en) | 1984-03-30 | 1984-03-30 | Muffler for internal-combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60206921A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106288301A (en) * | 2016-10-10 | 2017-01-04 | 广州康美风空调设备有限公司 | Acoustic filter integrated casing and preparation method thereof |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2758604B2 (en) * | 1988-04-27 | 1998-05-28 | 本田技研工業株式会社 | Exhaust silencer |
| US4880078A (en) * | 1987-06-29 | 1989-11-14 | Honda Giken Kogyo Kabushiki Kaisha | Exhaust muffler |
| JPH0625633Y2 (en) * | 1989-11-08 | 1994-07-06 | 日本グラスファイバー工業株式会社 | Muffler for exhaust system of internal combustion engine |
| JPH0610114Y2 (en) * | 1989-11-24 | 1994-03-16 | 株式会社丸山製作所 | Scarf |
| JP7032108B2 (en) * | 2017-11-15 | 2022-03-08 | 三菱造船株式会社 | Internal combustion engine exhaust system |
-
1984
- 1984-03-30 JP JP6268084A patent/JPS60206921A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106288301A (en) * | 2016-10-10 | 2017-01-04 | 广州康美风空调设备有限公司 | Acoustic filter integrated casing and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60206921A (en) | 1985-10-18 |
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