JPH07259545A - Catalytic converter - Google Patents
Catalytic converterInfo
- Publication number
- JPH07259545A JPH07259545A JP5171394A JP5171394A JPH07259545A JP H07259545 A JPH07259545 A JP H07259545A JP 5171394 A JP5171394 A JP 5171394A JP 5171394 A JP5171394 A JP 5171394A JP H07259545 A JPH07259545 A JP H07259545A
- Authority
- JP
- Japan
- Prior art keywords
- seal mat
- convex portion
- casing
- winding direction
- catalyst carrier
- 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
Landscapes
- Exhaust Gas After Treatment (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は触媒コンバータに関し、
とくにケーシングと触媒担体との間に設けられるシール
マットの合わせ部構造に関する。FIELD OF THE INVENTION The present invention relates to a catalytic converter,
In particular, it relates to the structure of the mating portion of the seal mat provided between the casing and the catalyst carrier.
【０００２】[0002]
【従来の技術】自動車の排気系には、排気ガス中の炭化
水素、一酸化炭素、窒素酸化物等を無害化するために触
媒コンバータが設けられる。触媒コンバータは、通常、
金属製のケーシングと、ケーシング内に配置される、触
媒（たとえば、Ｐｔ、Ｐｄ等）を担持した触媒担体（た
とえば、Ａｌ2 Ｏ3 ）と、ケーシングと触媒担体との間
に設けられるシールマットとを有する。シールマット
は、触媒担体に一重に巻きつけられ、巻き方向両端を突
き合わせた状態で装着され、ケーシングからクッション
をもって触媒担体を支持するとともに、ケーシングと触
媒担体間の隙間をシールする。シールマットは、たとえ
ばセラミック繊維をバインダで結合したものからなるの
で、シールマットの巻き方向両端の合わせ面に隙間が生
じると、そこを排気ガスが通り抜け、隙間の近傍のシー
ルマット部分を飛散させ、隙間を拡げ、その結果、触媒
担体の多数の細孔を通らないでガスが吹き抜け、触媒コ
ンバータの排気ガス浄化能力を低下させる。この対策と
して、特開昭３−３９１５号公報は、図６に示すよう
に、巻き方向一端に凸部６′が形成され、巻き方向他端
に凹部７′が形成されたシールマット３′を示してい
る。このシールマット３′は、巻き方向両端が合わせら
れ、凸部６′が凹部７′に突入された状態で装着される
ことにより、合わせ目の隙間を凸部６′で遮断するとと
もに、シールマット一端と他端が触媒軸方向にずれるこ
とを防止することを狙ったものである。2. Description of the Related Art An automobile exhaust system is provided with a catalytic converter for detoxifying hydrocarbons, carbon monoxide, nitrogen oxides and the like in exhaust gas. Catalytic converters are usually
A metal casing, a catalyst carrier (for example, Al 2 O 3 ) supporting a catalyst (for example, Pt, Pd, etc.), which is arranged in the casing, and a seal mat provided between the casing and the catalyst carrier. Have. The seal mat is wound around the catalyst carrier in a single layer, and is attached with its both ends in the winding direction butted against each other. The seal mat supports the catalyst carrier with a cushion from the casing and seals the gap between the casing and the catalyst carrier. Since the seal mat is made of, for example, ceramic fibers bound with a binder, when a gap is formed on the mating surfaces at both ends of the seal mat in the winding direction, exhaust gas passes through the gap and scatters the seal mat portion near the gap. The gap is widened, and as a result, the gas blows through without passing through a large number of pores of the catalyst carrier, and the exhaust gas purification capability of the catalytic converter is reduced. As a countermeasure against this, Japanese Patent Laid-Open No. 3-3915 discloses a seal mat 3'in which a convex portion 6'is formed at one end in the winding direction and a concave portion 7'is formed at the other end in the winding direction as shown in FIG. Shows. This seal mat 3'is fitted in such a manner that both ends in the winding direction are aligned and the protrusion 6'is inserted into the recess 7 ', so that the gap of the joint is blocked by the protrusion 6'and the seal mat 3' The purpose is to prevent one end and the other end from shifting in the axial direction of the catalyst.
【０００３】[0003]
【発明が解決しようとする課題】しかし、従来のシール
マットには次の問題がある。すなわち、シールマットの
巻き方向端部に凹凸が形成されていても、両側辺が平行
な凹凸であるため、凸部は凹部に対して抜ける方向に相
対移動することができ、その場合にはシールマットの合
せ部に、巻き方向と直角方向（触媒コンバータ軸方向）
に延びる隙間（図６の８′）ができ、または当初から隙
間がある場合はその隙間が拡がる。隙間８′ができた
り、拡がると、シールマットの凸部６′の根もとの部分
に集中的に排気ガスによるマット材の飛散が生じ、遂に
は凸部両側の隙間がつながってガス吹抜け通路ができ
る。本発明の目的は、シールマット一端の凸部と他端の
凹部が巻き方向にずれることを規制することによりシー
ルマットの巻き方向端部の合わせ部に隙間が生じにくい
ようにして、シールマットの排気ガスによる飛散に対す
る耐久性を向上させた触媒コンバータを提供することに
ある。However, the conventional seal mat has the following problems. That is, even if irregularities are formed on the end portion of the seal mat in the winding direction, the convex portions can move relative to the concave portion in the direction of removal because the concave and convex portions are parallel on both sides. At the mating part of the mat, the direction perpendicular to the winding direction (catalyst converter axial direction)
A gap (8 'in FIG. 6) extending to the side is formed, or if there is a gap from the beginning, the gap is expanded. When the gap 8'is formed or spreads, the mat material is scattered by the exhaust gas intensively at the base of the convex portion 6'of the seal mat, and finally the gaps on both sides of the convex portion are connected to each other to form the gas blow-through passage. You can An object of the present invention is to prevent gaps from being formed at the mating portions of the end portions of the seal mat in the winding direction by restricting the convex portion at one end of the seal mat and the concave portion at the other end from shifting in the winding direction. It is an object of the present invention to provide a catalytic converter having improved durability against scattering by exhaust gas.
【０００４】[0004]
【課題を解決するための手段】上記目的を達成するため
の本発明の触媒コンバータは次の通りである。ケーシン
グと、前記ケーシング内に配置される、触媒を担持した
触媒担体と、前記触媒担体に巻きつけられ、巻き方向一
端に凸部を有し巻き方向他端に凹部を有し、前記凸部を
前記凹部に入れかつ巻き方向両端が合わされた状態で前
記ケーシング内に配置され、前記触媒担体を前記ケーシ
ングから支持するとともに前記触媒担体と前記ケーシン
グとの間をシールするシールマットと、を有する触媒コ
ンバータにおいて、前記凸部は先端側に根もと部より幅
広の幅広部を有し、前記凹部は前記凸部に対応した形状
とされている触媒コンバータ。[Means for Solving the Problems] The catalytic converter of the present invention for achieving the above object is as follows. A casing, a catalyst carrier, which is disposed in the casing, carries a catalyst, and is wound around the catalyst carrier, and has a convex portion at one end in the winding direction and a concave portion at the other end in the winding direction. A catalytic converter having a seal mat, which is placed in the casing in a state where the both ends in the winding direction are put in the recessed portion and is aligned with each other, supports the catalyst carrier from the casing, and seals between the catalyst carrier and the casing. In the catalytic converter, the convex portion has a wide portion on the tip side that is wider than the root portion, and the concave portion has a shape corresponding to the convex portion.
【０００５】[0005]
【作用】上記本発明の触媒コンバータでは、凸部の先端
側に根もと部より幅広の幅広部を有し、凹部が凸部に対
応した形状に形成されて、凸部と凹部が噛み合わされて
いるので、凸部は凹部から抜け外れ方向に動くことがで
きず、このためシールマットの両端の合わせ面は、初期
の隙間がない状態を保ち続け、シールマット両端間に隙
間が生成したり、あるいは生成した隙間が拡がることが
ない。このため、隙間がある場合にその隙間部位に集中
的に生じるシールマット材の排気ガスによる飛散が防止
され、シールマットの耐久性が向上される。In the above catalytic converter of the present invention, the convex portion has the wide portion wider than the root portion at the tip end side, the concave portion is formed in a shape corresponding to the convex portion, and the convex portion and the concave portion are engaged with each other. Therefore, the convex part cannot move out of the concave part in the direction of detachment, so that the mating surfaces at both ends of the seal mat keep the initial gap-free state, and a gap is created between both ends of the seal mat. Or, the generated gap does not expand. For this reason, when there is a gap, scattering of the seal mat material caused by exhaust gas in the gap portion is prevented, and the durability of the seal mat is improved.
【０００６】[0006]
【実施例】図１、図２は本発明の第１実施例を、図３は
本発明の第２実施例を、図４は本発明の第３実施例を、
図５は本発明の第４実施例を、それぞれ、示している。
全実施例にわたって共通な構成の部分には、全実施例に
わたって同じ符号の付してある。はじめに、全実施例に
わたって共通な構成を、たとえば図１、図２を参照して
説明する。触媒コンバータは、自動車の排気系に設けら
れ、エンジンから流れてくる排気ガスを浄化する。触媒
コンバータは、金属（たとえば、ステンレス）製のケー
シング２と、ケーシング２内に配置される、触媒を担持
した触媒担体１と、ケーシング２と触媒担体１との間に
配置されるシールマット３と、を有する。触媒コンバー
タは、さらに、ケーシング２と触媒担体１との間で、シ
ールマット３の上流側に配置されるワイヤメッシュ４、
およびシールマット３の下流側に配置されるワイヤメッ
シュ５、を有していてもよい。1 and 2 show a first embodiment of the present invention, FIG. 3 shows a second embodiment of the present invention, and FIG. 4 shows a third embodiment of the present invention.
FIG. 5 shows a fourth embodiment of the present invention.
The same reference numerals are given to the constituents common to all the embodiments in all the embodiments. First, a configuration common to all the embodiments will be described with reference to FIGS. 1 and 2, for example. The catalytic converter is provided in the exhaust system of the automobile and purifies the exhaust gas flowing from the engine. The catalytic converter includes a casing 2 made of metal (for example, stainless steel), a catalyst carrier 1 that carries a catalyst and that is disposed in the casing 2, and a seal mat 3 that is disposed between the casing 2 and the catalyst carrier 1. With. The catalytic converter further includes a wire mesh 4 arranged upstream of the seal mat 3 between the casing 2 and the catalyst carrier 1.
And the wire mesh 5 arranged on the downstream side of the seal mat 3.
【０００７】触媒はＰｔ、Ｐｄ等であり、触媒担体１は
Ａｌ2 Ｏ3 等である。触媒担体１はモノリス担体で軸方
向に担体を貫通する多数の細孔を有し、この細孔表面に
触媒金属を担持している。触媒担体１とケーシング２と
の材質が異なるため、排気ガスが流れたときの触媒担体
とケーシングの熱膨張量が異なるが、シールマット３お
よびワイヤメッシュ４、５は、ガタを生じさせずに弾力
をもってケーシング２から触媒担体１を支持することを
可能にしている。シールマット３は、耐熱性無機材（た
とえば、ＳｉＯ2 ）等の繊維をバインダで結合した、ク
ッションを有しかつ温度が上ったときに熱膨張するマッ
トからなる。シールマット３は熱膨張により、緊締力を
増す。ワイヤメッシュ４、５は金属製（たとえばステン
レス）のワイヤメッシュであり、シールマット３に上流
側から排気ガスが流れ込んだり下流側から排気ガスが巻
き込まれたりするのを抑制して、シールマット材の排気
ガスによる飛散に対する耐久性を向上させている。The catalyst is Pt, Pd or the like, and the catalyst carrier 1 is Al 2 O 3 or the like. The catalyst carrier 1 is a monolithic carrier having a large number of pores penetrating the carrier in the axial direction, and the catalyst metal is carried on the surface of the pores. Since the catalyst carrier 1 and the casing 2 are made of different materials, the catalyst carrier and the casing have different thermal expansion amounts when exhaust gas flows, but the seal mat 3 and the wire meshes 4 and 5 are elastic without causing play. This makes it possible to support the catalyst carrier 1 from the casing 2. The seal mat 3 is formed of a mat having fibers such as a heat resistant inorganic material (for example, SiO 2 ) bonded with a binder, having a cushion, and thermally expanding when the temperature rises. The seal mat 3 increases the tightening force due to thermal expansion. The wire meshes 4 and 5 are metal (for example, stainless steel) wire meshes, and prevent the exhaust gas from flowing into the seal mat 3 from the upstream side and the exhaust gas from being caught in the seal mat 3 from the downstream side to prevent the seal mat material from forming. Improves durability against scattering by exhaust gas.
【０００８】シールマット３は、触媒担体１の外面に一
重に巻きつけられ、その状態でケーシング２内に組付け
られる。シールマット３の巻き方向一端には巻き方向に
突出する凸部６が形成されており、シールマット３の巻
き方向他端には巻き方向に凹まされた凹部７が形成され
ている。凸部６は先端側に根もと部より幅広の幅広部を
有し、凹部７は凸部６に対応した形状とされている。凸
部６は凹部７に噛み合わされている。凸部６および凹部
７の両側の、シールマット３の巻き方向端部の合わせ面
８、９は、凸部６と凹部７とが噛み合わされた時、初期
状態において、隙間なく突き合わされる。凸部６の先端
辺と凹部７の奥辺との間には、凸部６と凹部７とが噛み
合わされた時、初期状態において、望ましくは隙間なく
突き合わされるが、場合によっては微小量の隙間があっ
てもよい。The seal mat 3 is wound around the outer surface of the catalyst carrier 1 in a single layer, and is assembled in the casing 2 in that state. A protrusion 6 protruding in the winding direction is formed at one end of the seal mat 3 in the winding direction, and a recess 7 recessed in the winding direction is formed at the other end of the seal mat 3 in the winding direction. The convex portion 6 has a wide portion on the tip side that is wider than the root portion, and the concave portion 7 has a shape corresponding to the convex portion 6. The convex portion 6 is meshed with the concave portion 7. The mating surfaces 8 and 9 at the ends of the seal mat 3 in the winding direction on both sides of the convex portion 6 and the concave portion 7 are abutted without a gap in the initial state when the convex portion 6 and the concave portion 7 are meshed with each other. When the convex portion 6 and the concave portion 7 are meshed with each other between the tip side of the convex portion 6 and the deep side of the concave portion 7, they are preferably butted with each other without any gap in the initial state. There may be a gap.
【０００９】つぎに、各実施例に特有な構成について説
明する。第１実施例では、図１および図２に示すよう
に、凸部６は先端部が根もと部より幅広に形成されてお
り、凹部７は出口部が奥部よりも狭幅に形成されてい
る。そして、根もと部より幅広に形成された先端部が幅
広部を形成する。たとえば、凸部６の両側辺には、凸部
先端に近づく程両側辺間の間隔が拡がるテーパがつけら
れており、凸部６の側辺は凸部根もとから凸部先端に向
って直線状に延びている。その場合には、凹部７の両側
辺にも、凹部の奥部から出口部に近づく程両側辺間の間
隔が拡がるテーパがつけられており、凹部の側辺７は凹
部の奥部から出口部に向って直線状に延びている。そし
て、凸部６と凹部７とが噛み合わされた時に、凸部６の
側辺は凹部７の側辺と隙間なく接触される。第１実施例
では、図１および図２に示すように、凸部６は、シール
マット３の巻き方向一端に１つだけ設けられており、端
面の中央部に形成されている。凹部７も、シールマット
３の巻き方向他端に１つだけ設けられており、端面の中
央部に形成されている。凸部６と凹部７が噛み合わされ
ると、凸部６と凹部７は、シールマットの巻き方向に
も、それと直角方向（端面に沿う方向）にも、互いに相
対移動不能となる。Next, the structure peculiar to each embodiment will be described. In the first embodiment, as shown in FIGS. 1 and 2, the tip portion of the convex portion 6 is formed wider than the root portion, and the concave portion 7 is formed such that the outlet portion is narrower than the inner portion. ing. Then, the tip portion formed wider than the root portion forms the wide portion. For example, the both sides of the convex portion 6 are tapered so that the distance between the both sides becomes wider toward the tip of the convex portion, and the side of the convex portion 6 extends from the root of the convex portion toward the tip of the convex portion. It extends straight. In that case, both sides of the recess 7 are also tapered so that the distance between the two sides increases from the inner part of the recess toward the outlet, and the side 7 of the recess extends from the inner part of the recess to the outlet. It extends straight toward. Then, when the convex portion 6 and the concave portion 7 are meshed with each other, the lateral side of the convex portion 6 is brought into contact with the lateral side of the concave portion 7 without a gap. In the first embodiment, as shown in FIGS. 1 and 2, only one protrusion 6 is provided at one end of the seal mat 3 in the winding direction, and is formed at the center of the end face. Only one recess 7 is provided at the other end of the seal mat 3 in the winding direction, and is formed at the center of the end face. When the convex portion 6 and the concave portion 7 are engaged with each other, the convex portion 6 and the concave portion 7 are immovable relative to each other both in the winding direction of the seal mat and in the direction perpendicular thereto (the direction along the end face).
【００１０】第２実施例では、図３に示すように、凸部
６は、シールマット３の巻き方向一端に複数（図示例で
は２つ）設けられている。凹部７も、シールマット３の
巻き方向他端に複数（図示例では２つ）、凸部６の数と
同じ数だけ、設けられている。凸部６はそれと対応する
凹部７と噛み合わされ、互いに相対移動不能となる。各
凸部６、各凹部７の構成は、第１実施例に準じる。In the second embodiment, as shown in FIG. 3, a plurality of protrusions 6 (two in the illustrated example) are provided at one end of the seal mat 3 in the winding direction. A plurality of recesses 7 (two in the illustrated example) are provided at the other end of the seal mat 3 in the winding direction, and the same number as that of the projections 6 is provided. The convex portions 6 are engaged with the corresponding concave portions 7 and are immovable relative to each other. The configuration of each convex portion 6 and each concave portion 7 is similar to that of the first embodiment.
【００１１】第３実施例では、図４に示すように、凸部
６、凹部７の両側の、シールマット端部合わせ面８、９
は、シールマット巻き方向に、互いに位置をずらされて
いる。Ｄはそのオフセット量を示す。また、この実施例
においては、凸部６の根もと、凹部７の出口とは、短い
方の側辺側の根もと、出口をいうものとする。長い方の
側辺も直線状にテーパをもって延びている。各凸部６、
各凹部７の構成は、合わせ面８、９のずれ以外は第１実
施例に準じる。In the third embodiment, as shown in FIG. 4, seal mat end mating surfaces 8 and 9 on both sides of the convex portion 6 and the concave portion 7 are formed.
Are displaced from each other in the seal mat winding direction. D indicates the offset amount. Further, in this embodiment, the root of the convex portion 6 and the outlet of the concave portion 7 refer to the root and outlet of the shorter side. The longer side is also linearly extended with a taper. Each convex portion 6,
The configuration of each recess 7 is the same as that of the first embodiment except for the displacement of the mating surfaces 8 and 9.
【００１２】第４実施例では、図５に示すように、凸部
６の幅広部が凸部側面に形成された凸部幅方向に突出す
る突起部から形成されている。この突起部は凸部６の最
先端に形成されてもよく、あるいは図５に示すように、
根もと部より最先端側に近い側の側面の途中に形成され
ていてもよい。凹部７は凸部６に雄雌の関係で対応した
形状とされる。In the fourth embodiment, as shown in FIG. 5, the wide portion of the convex portion 6 is formed of a protruding portion formed on the side surface of the convex portion and protruding in the width direction of the convex portion. This protrusion may be formed at the tip of the protrusion 6, or as shown in FIG.
It may be formed in the middle of the side surface closer to the most distal end than the root portion. The concave portion 7 has a shape corresponding to the convex portion 6 in a male-female relationship.
【００１３】つぎに、作用を説明する。全実施例に共通
な作用については、シールマット３は、排気ガスの温
度、触媒発熱反応の熱等により温度が上昇して熱膨張
し、緊締力を増して、ケーシング２から触媒担体１を支
持するとともに、ケーシング２と触媒担体１との間をシ
ールする。このため、排気ガスのほぼ全量が触媒担体１
の細孔を通って流れ、効果的に浄化される。シールマッ
ト３は、組付け時に、凸部６と凹部７の相対移動不能の
噛み合いにより、容易に突合わせ面８、９に隙間がない
状態を保持してケーシング２内に組付けられ、また、使
用時にも凸部６と凹部７の抜け方向に相対移動不能の噛
み合いによって、突合わせ面８、９に隙間が生じること
がない。このため、隙間がある場合に生じる凸部６の両
側からのマット材飛散が生じず、シールマット３の耐久
性が向上される。その結果、凸部６の根もとにガス吹抜
け通路が貫通して形成されることがなく、ガス吹抜けに
よる触媒コンバータのガス浄化能力低下も生じない。Next, the operation will be described. With respect to the operation common to all the examples, the seal mat 3 increases its temperature due to the temperature of exhaust gas, the heat of the catalyst exothermic reaction, etc. and thermally expands to increase the tightening force to support the catalyst carrier 1 from the casing 2. At the same time, the casing 2 and the catalyst carrier 1 are sealed. Therefore, almost all of the exhaust gas is used as the catalyst carrier 1.
Flows through the pores of and is effectively purified. At the time of assembling, the seal mat 3 is easily assembled in the casing 2 while keeping the abutting surfaces 8 and 9 with no gaps due to the engagement of the convex portion 6 and the concave portion 7 which cannot move relative to each other. Even during use, the convex portions 6 and the concave portions 7 are meshed with each other so that they cannot move relative to each other in the direction in which the convex portions 6 and the concave portions 7 are removed, so that no gap is formed between the abutting surfaces 8 and 9. For this reason, the mat material does not scatter from both sides of the convex portion 6 when there is a gap, and the durability of the seal mat 3 is improved. As a result, the gas blow-through passage is not formed at the root of the convex portion 6, and the gas purifying performance of the catalytic converter is not deteriorated due to the gas blow-through.
【００１４】つぎに、各実施例に特有な作用について
は、第１実施例では、凸部６の数が１つのため、凸部６
の根もとの強度が比較的大きいこと、第２実施例では、
凸部６の数が複数のため、触媒担体１の軸方向距離が大
きい場合にも利用できること、第３実施例では、凸部
６、凹部７両側の合わせ面８、９の奥端間の直線距離が
大になって、たとえ合わせ面８、９に隙間ができても奥
端間距離が長いため、なお大きな耐久性があること、第
４実施例では凸部６の形状の選択の自由度が高まる、の
作用がある。Next, regarding the operation peculiar to each embodiment, since the number of the projections 6 is one in the first embodiment, the projections 6 are
The root strength of is relatively large, in the second embodiment,
Since the number of the convex portions 6 is plural, it can be used even when the axial distance of the catalyst carrier 1 is large. In the third embodiment, the straight line between the back ends of the mating surfaces 8 and 9 on both sides of the convex portion 6 and the concave portion 7. Even if the distance becomes large and a gap is formed on the mating surfaces 8 and 9, the distance between the back ends is long, so that the durability is still large. In the fourth embodiment, the degree of freedom in selecting the shape of the convex portion 6 is high. Has the effect of increasing.
【００１５】[0015]
【発明の効果】請求項１によれば、凸部に根もと部より
幅広の幅広部をもたせ、凹部を凸部と対応する形状とし
たので、凸部と凹部が噛み合ったときに、抜け外れ方向
に互いに相対移動することがなく、シールマット巻き方
向両端を隙間なく合わせた状態を容易に組付け時に得る
ことができ、使用中にもその状態を維持できる。したが
って、組付作業性を向上でき、またマット材飛散に対す
る耐久性を向上できる。請求項２によれば、凸部、凹部
両側のシールマット合わせ面を、シールマット巻き方向
に互いに位置をずらせたので、合わせ面奥間距離を増大
でき、シールマットの耐久性をさらに向上できる。According to the first aspect of the present invention, the convex portion has the wide portion wider than the root portion, and the concave portion has a shape corresponding to the convex portion. It is possible to easily obtain a state in which both ends of the seal mat winding direction are aligned with each other without a gap without moving relative to each other in the detaching direction, and to maintain the state even during use. Therefore, the workability of assembling can be improved, and the durability against scattering of the mat material can be improved. According to the second aspect, since the seal mat mating surfaces on both sides of the convex portion and the concave portion are displaced from each other in the seal mat winding direction, the distance between the mating surfaces can be increased and the durability of the seal mat can be further improved.
【図１】本発明の第１実施例（第２、第３、第４実施例
にも適用可能）に係る触媒コンバータの断面図である。FIG. 1 is a sectional view of a catalytic converter according to a first embodiment of the present invention (also applicable to the second, third, and fourth embodiments).
【図２】本発明の第１実施例に用いられるシールマット
の斜視図である。FIG. 2 is a perspective view of a seal mat used in the first embodiment of the present invention.
【図３】本発明の第２実施例に用いられるシールマット
の斜視図である。FIG. 3 is a perspective view of a seal mat used in the second embodiment of the present invention.
【図４】本発明の第３実施例に用いられるシールマット
の斜視図である。FIG. 4 is a perspective view of a seal mat used in a third embodiment of the present invention.
【図５】本発明の第４実施例に用いられるシールマット
の巻き方向端部の一部正面図である。FIG. 5 is a partial front view of an end portion in the winding direction of a seal mat used in a fourth embodiment of the present invention.
【図６】従来の触媒コンバータで用いられたシールマッ
トの斜視図である。FIG. 6 is a perspective view of a seal mat used in a conventional catalytic converter.
１ 触媒担体 ２ ケーシング ３ シールマット ４ ワイヤメッシュ ５ ワイヤメッシュ ６ 凸部 ７ 凹部 ８ 合わせ面 ９ 合わせ面 DESCRIPTION OF SYMBOLS 1 Catalyst carrier 2 Casing 3 Seal mat 4 Wire mesh 5 Wire mesh 6 Convex part 7 Recessed part 8 Mating surface 9 Mating surface
Claims (2)
体と、 前記触媒担体に巻きつけられ、巻き方向一端に凸部を有
し巻き方向他端に凹部を有し、前記凸部を前記凹部に入
れかつ巻き方向両端が合わされた状態で前記ケーシング
内に配置され、前記触媒担体を前記ケーシングから支持
するとともに前記触媒担体と前記ケーシングとの間をシ
ールするシールマットと、を有する触媒コンバータにお
いて、 前記凸部は先端側に根もと部より幅広の幅広部を有し、
前記凹部は前記凸部に対応した形状とされていることを
特徴とする触媒コンバータ。1. A casing, a catalyst carrier, which is disposed in the casing, and carries a catalyst, and which is wound around the catalyst carrier and has a convex portion at one end in the winding direction and a concave portion at the other end in the winding direction. A seal mat which is disposed in the casing in a state where the convex portion is placed in the concave portion and both ends in the winding direction are aligned, and which supports the catalyst carrier from the casing and seals between the catalyst carrier and the casing. In the catalytic converter having, the convex portion has a wide portion on the tip side that is wider than the root portion,
The catalytic converter, wherein the concave portion has a shape corresponding to the convex portion.
せ面が前記凸部、凹部の両側で互いにシールマット巻き
方向に位置をずらされている請求項１記載の触媒コンバ
ータ。2. The catalytic converter according to claim 1, wherein the mating surfaces at both ends of the seal mat in the winding direction are displaced from each other in the seal mat winding direction on both sides of the convex portion and the concave portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5171394A JPH07259545A (en) | 1994-03-23 | 1994-03-23 | Catalytic converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5171394A JPH07259545A (en) | 1994-03-23 | 1994-03-23 | Catalytic converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07259545A true JPH07259545A (en) | 1995-10-09 |
Family
ID=12894543
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5171394A Pending JPH07259545A (en) | 1994-03-23 | 1994-03-23 | Catalytic converter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07259545A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002050383A (en) * | 2000-08-02 | 2002-02-15 | Ibiden Co Ltd | Fuel cell reformer and its manufacturing method |
| KR100417641B1 (en) * | 1996-05-29 | 2004-05-14 | 이비덴 가부시키가이샤 | Manufacturing method of catalytic converter for purification of exhaust gas |
| DE102006037361A1 (en) * | 2006-08-09 | 2008-02-28 | Volkswagen Ag | Exhaust-gas treatment mechanism for internal combustion engine, has exhaust-gas treatment body, storage mat with which exhaust-gas treatment body is wrapped, where storage mat having projection-hem and recess-hem fit together without gap |
| DE102007034832A1 (en) * | 2007-07-26 | 2009-01-29 | Volkswagen Ag | Flexible winding element, particularly storage mat, for ceramic honeycomb body of catalyst, has impact edges, which has obtuse angle in periphery path and lies tangentially to each other in functional state |
| KR100898889B1 (en) * | 2008-08-18 | 2009-05-21 | 이비덴 가부시키가이샤 | Holding sealer, exhaust gas processing device and manufacturing method of the same |
| WO2010004637A1 (en) * | 2008-07-10 | 2010-01-14 | イビデン株式会社 | Holding seal material, exhaust gas purification apparatus, and method for manufacturing exhaust gas purification apparatus |
| JP2012219784A (en) * | 2011-04-13 | 2012-11-12 | Ibiden Co Ltd | Assembly, and exhaust gas treatment device |
| JP2014009657A (en) * | 2012-07-02 | 2014-01-20 | Ibiden Co Ltd | Holding seal material, winding body and emission control device |
| JP2017155693A (en) * | 2016-03-03 | 2017-09-07 | いすゞ自動車株式会社 | Exhaust emission control device of internal combustion engine |
| JP2019105210A (en) * | 2017-12-12 | 2019-06-27 | イビデン株式会社 | Holding seal material and exhaust emission control device |
-
1994
- 1994-03-23 JP JP5171394A patent/JPH07259545A/en active Pending
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100417641B1 (en) * | 1996-05-29 | 2004-05-14 | 이비덴 가부시키가이샤 | Manufacturing method of catalytic converter for purification of exhaust gas |
| JP2002050383A (en) * | 2000-08-02 | 2002-02-15 | Ibiden Co Ltd | Fuel cell reformer and its manufacturing method |
| JP4747400B2 (en) * | 2000-08-02 | 2011-08-17 | イビデン株式会社 | Fuel cell reformer and manufacturing method thereof |
| DE102006037361A1 (en) * | 2006-08-09 | 2008-02-28 | Volkswagen Ag | Exhaust-gas treatment mechanism for internal combustion engine, has exhaust-gas treatment body, storage mat with which exhaust-gas treatment body is wrapped, where storage mat having projection-hem and recess-hem fit together without gap |
| DE102007034832A1 (en) * | 2007-07-26 | 2009-01-29 | Volkswagen Ag | Flexible winding element, particularly storage mat, for ceramic honeycomb body of catalyst, has impact edges, which has obtuse angle in periphery path and lies tangentially to each other in functional state |
| DE102007034832B4 (en) * | 2007-07-26 | 2018-11-15 | Volkswagen Ag | Winding element for a ceramic honeycomb body of a catalyst |
| US7678345B2 (en) | 2008-07-10 | 2010-03-16 | Ibiden Co., Ltd. | Holding sealing material, exhaust gas purifying apparatus and method for manufacturing exhaust gas purifying apparatus |
| WO2010004637A1 (en) * | 2008-07-10 | 2010-01-14 | イビデン株式会社 | Holding seal material, exhaust gas purification apparatus, and method for manufacturing exhaust gas purification apparatus |
| JP5033176B2 (en) * | 2008-07-10 | 2012-09-26 | イビデン株式会社 | Holding sealing material, exhaust gas purification device, and method of manufacturing exhaust gas purification device |
| KR100898889B1 (en) * | 2008-08-18 | 2009-05-21 | 이비덴 가부시키가이샤 | Holding sealer, exhaust gas processing device and manufacturing method of the same |
| JP2012219784A (en) * | 2011-04-13 | 2012-11-12 | Ibiden Co Ltd | Assembly, and exhaust gas treatment device |
| JP2014009657A (en) * | 2012-07-02 | 2014-01-20 | Ibiden Co Ltd | Holding seal material, winding body and emission control device |
| JP2017155693A (en) * | 2016-03-03 | 2017-09-07 | いすゞ自動車株式会社 | Exhaust emission control device of internal combustion engine |
| WO2017150513A1 (en) * | 2016-03-03 | 2017-09-08 | いすゞ自動車株式会社 | Exhaust gas purification device for internal combustion engine |
| JP2019105210A (en) * | 2017-12-12 | 2019-06-27 | イビデン株式会社 | Holding seal material and exhaust emission control device |
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