JP4610491B2 - Exhaust silencer outer cover - Google Patents
Exhaust silencer outer cover Download PDFInfo
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- JP4610491B2 JP4610491B2 JP2006009073A JP2006009073A JP4610491B2 JP 4610491 B2 JP4610491 B2 JP 4610491B2 JP 2006009073 A JP2006009073 A JP 2006009073A JP 2006009073 A JP2006009073 A JP 2006009073A JP 4610491 B2 JP4610491 B2 JP 4610491B2
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- 230000003584 silencer Effects 0.000 title claims description 42
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000030279 gene silencing Effects 0.000 description 2
- 238000005304 joining Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 239000011358 absorbing material Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Exhaust Silencers (AREA)
Description
本発明は、排気消音器の技術、特に、排気管、排気管等を具備する排気消音器の外カバーの技術に関する。 The present invention relates to a technology of an exhaust silencer, and more particularly to a technology of an outer cover of an exhaust silencer having an exhaust pipe, an exhaust pipe, and the like.
従来、エンジンの吸排気系統を載置するためのスペースは限られているため、吸気及び排気経路はできるだけ狭いスペースに配置する必要があった。そこで、特許文献１や特許文献２に示されるように、円筒形の排気消音器をエンジンルーム内に設置することで、排気経路の体積を抑えつつ、消音容積を確保していた。前記円筒形を実現するために一枚の鉄板をロールさせ、突合せ部を溶接で接合し、円筒状として形成するロール成型が行われている。
しかし、従来技術に示すように、排気消音器の形状を円筒形に限定していたのでは、実際に排気経路として確保できるスペースを有効に使えず、無駄が生じてしまい、十分な消音容積が確保できない場合があった。また、排気経路として確保できるスペースに合わせて個別に形状を変えていては、成型に手間がかかる。そこで、本発明は、前記課題を鑑み、排気消音器の形状をロール成型による制限から開放し、消音容積を確保することが可能な排気消音器の外カバーを提供する。 However, as shown in the prior art, if the shape of the exhaust silencer is limited to a cylindrical shape, the space that can actually be secured as an exhaust path cannot be used effectively, resulting in waste and a sufficient silencing volume. In some cases, it could not be secured. Further, if the shape is individually changed in accordance with the space that can be secured as the exhaust path, it takes time and effort to mold. Therefore, in view of the above problems, the present invention provides an outer cover of an exhaust silencer that can release the shape of the exhaust silencer from the restriction by roll molding and ensure a silence volume.
本発明の解決しようとする課題は以上の如くであり、次にこの課題を解決するための手段を説明する。 The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described.
請求項１においては、消音室（１６）の外側を覆う排気消音器（１１）の外カバー（１２）において、前記外カバー（１２）を、円筒状の外筒（２２）と、該外筒（２２）の前後を覆う側板（１５・１５）により構成し、該外筒（２２）は、断面視略Ｕ状の上下二つのカバー部材（２４ａ・２４ｂ）を、開放側を対向配置して上下接合することにより構成し、前記上下のカバー部材（２４ａ・２４ｂ）の間に、プレート状の延長部材（２７）を取付可能に構成したものである。 In claim 1, in the outer cover (12) of the exhaust silencer (11) covering the outside of the silencer chamber (16), the outer cover (12) includes a cylindrical outer cylinder (22) and the outer cylinder. The outer cylinder (22) is composed of two upper and lower cover members (24a, 24b) that are substantially U-shaped in cross-section, with the open side facing each other. A plate-like extension member (27) can be attached between the upper and lower cover members (24a, 24b) .
請求項２においては、請求項１記載の排気消音器の外カバー（１２）において、前記上下のカバー部材（２４ａ・２４ｂ）を同一部品としたものである。 According to a second aspect of the present invention, in the outer cover (12) of the exhaust silencer according to the first aspect, the upper and lower cover members (24a, 24b) are the same parts .
請求項３においては、請求項１記載の排気消音器の外カバー（１２）において、前記カバー部材（２４ａ・２４ｂ）の一方の接合部（３１ａ）は断面視かぎ状に構成し、他方の接合部（３１ｂ）は断面視直線状に構成したものである。 According to claim 3, in the outer cover (12) of the exhaust silencer according to claim 1, one joint (31a) of the cover member (24a, 24b) is formed in a hook shape in cross section, and the other joint The part (31b) is configured in a straight line shape in cross section .
本発明の効果として、以下に示すような効果を奏する。 As effects of the present invention, the following effects can be obtained.
請求項１においては、消音室（１６）の外側を覆う排気消音器（１１）の外カバー（１２）において、前記外カバー（１２）を、円筒状の外筒（２２）と、該外筒（２２）の前後を覆う側板（１５・１５）により構成し、該外筒（２２）は、断面視略Ｕ状の上下二つのカバー部材（２４ａ・２４ｂ）を、開放側を対向配置して上下接合することにより構成したので、一個の部材を屈曲させて構成するよりも、制限無く様々な形状の外筒を構成することが可能となり、消音容積の確保が可能となる。 In claim 1, in the outer cover (12) of the exhaust silencer (11) covering the outside of the silencer chamber (16), the outer cover (12) includes a cylindrical outer cylinder (22) and the outer cylinder. The outer cylinder (22) is composed of two upper and lower cover members (24a, 24b) that are substantially U-shaped in cross-section, with the open side facing each other. Since it is configured by joining up and down, it is possible to configure outer cylinders of various shapes without limitation, and it is possible to secure a sound deadening volume, compared to a configuration in which one member is bent.
また、前記上下のカバー部材（２４ａ・２４ｂ）の間に、プレート状の延長部材（２７）を取付可能に構成したので、延長部材の上下方向の長さを変更するだけで、容積を容易に変更できる。また、延長部材はプレートにより容易に構成することができる。 Further , since the plate-like extension member (27) can be mounted between the upper and lower cover members (24a, 24b) , the volume can be easily increased by changing the length of the extension member in the vertical direction. Can be changed. Further, the extension member can be easily constituted by a plate.
請求項２においては、請求項１記載の排気消音器の外カバーにおいて、前記上下のカバー部材（２４ａ・２４ｂ）を同一部品としたので、製造が簡単で、部品の種類を減少でき、コスト低減化が図れる。また、同一の部材で構成することにより、型に対する投資を軽減することができ、工程が単純化されるため、作業能率も向上する。 According to the second aspect, in the outer cover of the exhaust silencer according to the first aspect, since the upper and lower cover members (24a, 24b) are the same parts , the manufacture is simple, the types of parts can be reduced, and the cost is reduced. Can be achieved. Moreover, by comprising with the same member, the investment with respect to a type | mold can be reduced, and since a process is simplified, working efficiency improves.
請求項３においては、請求項１記載の排気消音器の外カバーにおいて、前記カバー部材（２４ａ・２４ｂ）の一方の接合部（３１ａ）は断面視かぎ状に構成し、他方の接合部（３１ｂ）は断面視直線状に構成したので、接合部の接触面積が増大し、接合部の強度を高めることができる。
また、接合時の位置決めが容易にできる。
According to a third aspect of the present invention, in the outer cover of the exhaust silencer according to the first aspect, one joint portion (31a) of the cover member (24a, 24b) is formed in a hook shape in cross section, and the other joint portion (31b). ) Is configured in a straight line shape in cross section, the contact area of the joint portion is increased, and the strength of the joint portion can be increased.
Moreover, positioning at the time of joining can be performed easily.
次に、発明の実施の形態を説明する。 Next, embodiments of the invention will be described.
図１は本発明の一実施例に係るエンジンの全体的な構成を示した正面図、図２はエンジンの側面図、図３は外カバーの外筒のカバー部材を表した断面斜視図、図４は外カバーの内筒のカバー部材を表した断面斜視図、図５は外カバーの外筒のカバー部材を表した断面斜視図、図６は排気消音器の側面図、図７は図６のＡ−Ａ面で切断した際の排気消音器の背面断面図、図８は図７のＢ−Ｂ面で切断した際の排気消音器の側面断面図、図９は従来のエンジンの側面図である。 1 is a front view showing an overall configuration of an engine according to an embodiment of the present invention, FIG. 2 is a side view of the engine, FIG. 3 is a cross-sectional perspective view showing a cover member of an outer cylinder of an outer cover, and FIG. 4 is a sectional perspective view showing the cover member of the inner cylinder of the outer cover, FIG. 5 is a sectional perspective view showing the cover member of the outer cylinder of the outer cover, FIG. 6 is a side view of the exhaust silencer, and FIG. Fig. 8 is a rear sectional view of the exhaust silencer when cut along the AA plane, Fig. 8 is a side sectional view of the exhaust silencer when cut along the BB plane in Fig. 7, and Fig. 9 is a side view of a conventional engine. It is.
まず、排気消音器１１を具備するエンジン１の概略について図１及び図２を用いて説明する。エンジン１の主な構成として、シリンダブロック２の上端部にはシリンダヘッド３が、下端部には潤滑油を貯留するオイルパン４が取り付けられている。前記シリンダブロック２は、内部中央にシリンダ（図示なし）が上下方向に配置され、シリンダ内にはピストン（図示なし）が収納され、下部をクランクケースとしている。シリンダヘッド３内部の吸気ポート（図示なし）及び排気ポート（図示なし）は、吸気弁（図示なし）及び排気弁（図示なし）によって、シリンダブロック２内部のシリンダと連通・遮断される。該シリンダヘッド３は、エンジン１を多気筒のエンジンとした場合複数備えられ、排気マニホールド５は多気筒のエンジンに対応するように一つの主管から分岐するように多岐管が形成されており、それぞれの多岐管の先端部が前記シリンダヘッド３側に対向するように構成している。エンジン１からの排気ガスがシリンダヘッド３の排気通路内に排出され、該シリンダヘッド３より排出された排気ガスは排気マニホールド５の多岐管である図示せぬ排気入口部のそれぞれの開口部より該排気マニホールド５内の排気通路へと排出される。そして、この排気ガスは、排気通路の下流側で合流した後、主管である排気出口部５ａへと排出される。排気出口部５ａにはその上方に配置した過給器２８が接続されている。 First, the outline of the engine 1 including the exhaust silencer 11 will be described with reference to FIGS. 1 and 2. As a main configuration of the engine 1, a cylinder head 3 is attached to an upper end portion of the cylinder block 2, and an oil pan 4 for storing lubricating oil is attached to a lower end portion. In the cylinder block 2, a cylinder (not shown) is arranged vertically in the center of the inside, a piston (not shown) is accommodated in the cylinder, and the lower part is a crankcase. An intake port (not shown) and an exhaust port (not shown) inside the cylinder head 3 are communicated with and cut off from a cylinder inside the cylinder block 2 by an intake valve (not shown) and an exhaust valve (not shown). When the engine 1 is a multi-cylinder engine, a plurality of cylinder heads 3 are provided, and the exhaust manifold 5 is formed with manifolds so as to branch from one main pipe so as to correspond to the multi-cylinder engine. The front end of the manifold is configured to face the cylinder head 3 side. Exhaust gas from the engine 1 is discharged into the exhaust passage of the cylinder head 3, and the exhaust gas discharged from the cylinder head 3 is from the respective openings of an exhaust inlet (not shown) which is a manifold of the exhaust manifold 5. It is discharged to an exhaust passage in the exhaust manifold 5. The exhaust gas joins on the downstream side of the exhaust passage, and is then discharged to the exhaust outlet portion 5a that is the main pipe. A supercharger 28 disposed above the exhaust outlet 5a is connected.
次に、前記排気消音器１１について説明する。排気消音器１１は、図６、図７及び図８に示すように、略円筒形の外カバー１２と、該外カバーの前後を覆う側板１５・１５、前記外カバー１２の内部に一部貫設された排気連結管１３、前記外カバー１２の長手方向に垂直に貫設された排気管１４などから構成されており、外カバー１２を固定台６に固設している。 Next, the exhaust silencer 11 will be described. As shown in FIGS. 6, 7, and 8, the exhaust silencer 11 includes a substantially cylindrical outer cover 12, side plates 15 and 15 that cover the front and rear of the outer cover, and a part of the outer cover 12. The exhaust connecting pipe 13 is provided, and the exhaust pipe 14 is provided perpendicular to the longitudinal direction of the outer cover 12. The outer cover 12 is fixed to the fixed base 6.
すなわち、排気マニホールド５の排気出口部５ａから排出された排気ガスは、過給器２８を通過後に排気連結管１３を通って、排気消音器１１の内部である消音室１６を通って排気管１４から排出される。 That is, the exhaust gas discharged from the exhaust outlet 5 a of the exhaust manifold 5 passes through the supercharger 28, passes through the exhaust connection pipe 13, passes through the silencer chamber 16 that is inside the exhaust silencer 11, and is exhausted from the exhaust pipe 14. Discharged from.
前記排気管１４は、中空の円筒形に構成されており、消音器１６内を貫設している。該排気管１４の消音器１６内に貫設している部分の側面には、複数の排気孔１４ａを穿設しており、上端部は開口して大気に放出できるようにしている。下端部にはドレン１４ｂが配置され、排ガスが冷却されて水等が溜まると排出できるようにしている。 The exhaust pipe 14 is formed in a hollow cylindrical shape and penetrates the silencer 16. A plurality of exhaust holes 14a are formed in the side surface of the exhaust pipe 14 that extends through the silencer 16, and the upper end is opened so that it can be released into the atmosphere. A drain 14b is disposed at the lower end so that the exhaust gas can be discharged when the exhaust gas is cooled and water is accumulated.
また、前記排気連結管１３は断面視円筒形に構成されており、排気連結管１３の一端が排気消音器１１の側端部（側板１５）に貫設されて消音室１６内と連通しており、反対側の端部にはフランジ１３ａを設けている。フランジ１３ａは過給器２８の排気出口側端部とボルトで接合されており、過給器２８を通過した排気が消音室１６へ入るようにしている。 The exhaust connecting pipe 13 is formed in a cylindrical shape in cross section, and one end of the exhaust connecting pipe 13 is provided in a side end portion (side plate 15) of the exhaust silencer 11 so as to communicate with the inside of the silencer chamber 16. A flange 13a is provided at the opposite end. The flange 13 a is joined to the exhaust outlet side end of the supercharger 28 with a bolt so that the exhaust gas that has passed through the supercharger 28 enters the muffler chamber 16.
前記外カバー１２は、内筒２１と外筒２２の二重構造となっており、該内筒２１と外筒２２の間には、グラスマットなどで構成された断熱材を兼ねる吸音材２３が充填されている。外カバー１２の外筒２２は、図３に示すように、断面視Ｕ字状のカバー部材２４ａ・２４ｂから構成される。また、内筒は、図５に示すように、外筒を構成するＵ字状のカバー部材より一回り小さいカバー部材２５ａ・２５ｂから構成され、該カバー部材２５ａ・２５ｂには、排気音が吸音材に吸収されやすいように吸音孔２６・２６・２６・・・が多数設けられている。 The outer cover 12 has a double structure of the inner cylinder 21 and the outer cylinder 22, between the inner tube 21 and outer tube 22, the sound absorbing material 23 which also serves as a heat insulator made of such a glass mat Filled. As shown in FIG. 3, the outer cylinder 22 of the outer cover 12 includes cover members 24 a and 24 b that are U-shaped in sectional view. Further, as shown in FIG. 5, the inner cylinder is composed of cover members 25a and 25b that are slightly smaller than the U-shaped cover members constituting the outer cylinder , and exhaust noise is absorbed by the cover members 25a and 25b. Many sound absorbing holes 26, 26, 26,... Are provided so as to be easily absorbed by the material.
従来、カバー部材は一枚の鋼板を屈曲して成形することが多く、図９のように、断面視円形状などの特定の形状に限定されていた。しかし、形状を限定すると、略同じ部材を用いて出力やシリンダ長等が異なる仕様に変更した場合に別構成とした排気消音器を取り付けなければならず、部品点数が増加していた。また、実際に排気経路として確保できるスペースを有効に使えず、無駄が生じてしまい、十分な消音容積が確保できない場合があった。そこで、鋼板を屈曲させた断面視略Ｕ字状のカバー部材２４ａ・２４ｂを二個使用して、開放側を対向配置することで係合し、オーバル状の外カバーを作成する。なお、カバー部材２５ａ・２５ｂも略同様に構成される。 Conventionally, the cover member is often formed by bending a single steel plate, and is limited to a specific shape such as a circular shape in cross section as shown in FIG. However, if the shape is limited, an exhaust silencer having a different configuration must be attached when the output or cylinder length is changed to a different specification using substantially the same member, which increases the number of parts. In addition, the space that can be actually secured as the exhaust path cannot be used effectively, resulting in waste, and a sufficient sound deadening volume may not be secured. Accordingly, two cover members 24a and 24b each having a substantially U-shaped cross-sectional view in which a steel plate is bent are used and engaged by disposing the open sides facing each other, thereby creating an oval outer cover. The cover members 25a and 25b are configured in substantially the same manner.
また、前記断面視Ｕ字状のカバー部材２４ａ・２４ｂを同一の形状からなる二個の部材で構成することも可能である。これにより、開放側を対向配置して固定するだけで容易に組み立てることができ、同じ型からカバー部材２４ａ・２４ｂを作成することが可能となり、工程が単純になり、コスト軽減につながる。 Moreover, it is also possible to comprise the cover members 24a and 24b having a U-shaped cross-sectional view with two members having the same shape. As a result, it is possible to easily assemble the cover members 24a and 24b from the same mold by simply arranging the open sides facing each other and fixing them, thereby simplifying the process and reducing costs.
図３に示すように、前記外カバー１２の外筒２２の構成要素である断面視略Ｕ字状のカバー部材２４ａ・２４ｂにおいて、それぞれの開放側端には接合部３１ａ・３１ｂを形成している。一方の接合部３１ａは断面視かぎ状（クランク状）に構成し、他方の接合部３１ｂは断面視直線状に構成している。また、図４に示すように、内筒２１の構成要素であるカバー部材２５ａ・２５ｂの接合部３２ａ・３２ｂも同じく、一方は断面視直線状に構成し、他方は断面視かぎ状に構成している。このかぎ状の接合部３１ａ（３２ａ）の段部の高さを外カバー１２の板厚と略等しくなるようにすることで、直線状の接合部３１ｂ（３２ｂ）の外面とかぎ状の接合部３１ａ（３２ａ）の内面とを突き合わせて固定することにより、継ぎ目の内面の凹凸を減少させることが可能となる。また、溶接やネジ止め等により固定する作業を行う場合の位置決めが容易となるため、作業の効率も向上する。 As shown in FIG. 3, in the substantially U-shaped cover members 24a and 24b, which are constituent elements of the outer cylinder 22 of the outer cover 12, the joint portions 31a and 31b are formed at the respective open side ends. Yes. One joint 31a is formed in a hook shape (crank shape) in cross section, and the other joint portion 31b is formed in a straight line shape in cross section. Also, as shown in FIG. 4, the joint portions 32a and 32b of the cover members 25a and 25b, which are constituent elements of the inner cylinder 21, are also configured in a straight line shape in cross section, and in the other direction in a hook shape in cross section. ing. By making the height of the step portion of the hook-shaped joint portion 31a (32a) substantially equal to the plate thickness of the outer cover 12, the outer surface of the linear joint portion 31b (32b) and the hook-shaped joint portion. By confronting and fixing the inner surface of 31a (32a), the unevenness of the inner surface of the seam can be reduced. Moreover, since the positioning in the case of performing the work of fixing by welding, screwing or the like is facilitated, the work efficiency is also improved.
また、排気消音器１１の容量も一対の延長部材２７を対向配置するカバー部材２４ａ・２４ｂの間に配置するだけで容易に増加できる。即ち、図５に示すように、延長部材２７はカバー部材２４ａ・２４ｂと同じ左右長さのプレート状に構成し、上下高さを増加容量に合わせて選択できるようにする。そして、上部及び下部に接合部３３ａ・３３ｂを形成し、その一方の接合部３３ａは前記接合部３１ａと同じ形状とした断面視かぎ状（クランク状）に構成し、他方の接合部３３ｂは前記接合部３１ｂと同じ形状として断面視直線状に構成している。このように構成することにより、二個の断面視略Ｕ字状のカバー部材２４ａ・２４ｂの間に二個のプレート状の延長部材２７・２７を配置して、接合部３３ａ・３３ｂを固定することにより、所望の容量を大きくした外カバーを作成することが可能となる。即ち、断面視略Ｕ字状のカバー部材２４ａ・２４ｂにプレート状の延長部材２７・２７を取り付けることにより、図４のような、両端が半円で長辺が直線となっている断面形状を備えた排気消音器１１を作成することが可能となり、排気消音器のために細長いスペースしか確保できない場合でも、消音容積の大きな排気消音器１１を配置することが可能となる。 Further, the capacity of the exhaust silencer 11 can be easily increased simply by disposing the pair of extension members 27 between the cover members 24a and 24b disposed to face each other. That is, as shown in FIG. 5, the extension member 27 is formed in a plate shape having the same left and right length as the cover members 24a and 24b so that the vertical height can be selected according to the increased capacity. Then, the joint portions 33a and 33b are formed in the upper and lower portions, and one of the joint portions 33a is formed in a hook shape (crank shape) in the same shape as the joint portion 31a, and the other joint portion 33b The same shape as that of the joint portion 31b is formed in a straight line shape in cross section. With this configuration, the two plate-like extension members 27 and 27 are disposed between the two substantially U-shaped cover members 24 a and 24 b in cross-section, and the joint portions 33 a and 33 b are fixed. This makes it possible to create an outer cover with a desired capacity increased. That is, by attaching plate-like extension members 27 and 27 to cover members 24a and 24b having a substantially U-shape in cross-section, a cross-sectional shape in which both ends are semicircular and the long side is straight as shown in FIG. It is possible to create the exhaust silencer 11 provided, and even when only an elongated space can be secured for the exhaust silencer, it is possible to arrange the exhaust silencer 11 having a large silencing volume.
１ エンジン
１１ 排気消音器
１２ 外カバー
１３ 排気連結管
１４ 排気管
２４ａ・２４ｂ カバー部材
DESCRIPTION OF SYMBOLS 1 Engine 11 Exhaust silencer 12 Outer cover 13 Exhaust connection pipe 14 Exhaust pipe 24a / 24b Cover member
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Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006009073A JP4610491B2 (en) | 2006-01-17 | 2006-01-17 | Exhaust silencer outer cover |
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| Application Number | Priority Date | Filing Date | Title |
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| JP2006009073A JP4610491B2 (en) | 2006-01-17 | 2006-01-17 | Exhaust silencer outer cover |
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| JP2007192059A JP2007192059A (en) | 2007-08-02 |
| JP4610491B2 true JP4610491B2 (en) | 2011-01-12 |
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| JP2006009073A Expired - Fee Related JP4610491B2 (en) | 2006-01-17 | 2006-01-17 | Exhaust silencer outer cover |
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| JP6126022B2 (en) * | 2014-02-07 | 2017-05-10 | トヨタ自動車株式会社 | Silencer for exhaust |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5615414U (en) * | 1979-07-17 | 1981-02-10 | ||
| JPS5848919U (en) * | 1981-09-30 | 1983-04-02 | カルソニックカンセイ株式会社 | Shell structure of automobile exhaust system |
| JP2004156474A (en) * | 2002-11-05 | 2004-06-03 | Sango Co Ltd | Muffler and its manufacturing method |
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2006
- 2006-01-17 JP JP2006009073A patent/JP4610491B2/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5615414U (en) * | 1979-07-17 | 1981-02-10 | ||
| JPS5848919U (en) * | 1981-09-30 | 1983-04-02 | カルソニックカンセイ株式会社 | Shell structure of automobile exhaust system |
| JP2004156474A (en) * | 2002-11-05 | 2004-06-03 | Sango Co Ltd | Muffler and its manufacturing method |
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