JP2003314266A - Metal carrier for catalytic converter - Google Patents
Metal carrier for catalytic converterInfo
- Publication number
- JP2003314266A JP2003314266A JP2002123356A JP2002123356A JP2003314266A JP 2003314266 A JP2003314266 A JP 2003314266A JP 2002123356 A JP2002123356 A JP 2002123356A JP 2002123356 A JP2002123356 A JP 2002123356A JP 2003314266 A JP2003314266 A JP 2003314266A
- Authority
- JP
- Japan
- Prior art keywords
- metal carrier
- catalytic converter
- recess
- outer cylinder
- plane
- 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
- 239000002184 metal Substances 0.000 title claims abstract description 52
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 52
- 230000003197 catalytic effect Effects 0.000 title claims abstract description 37
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- 239000003054 catalyst Substances 0.000 description 13
- 230000000052 comparative effect Effects 0.000 description 4
- 230000008961 swelling Effects 0.000 description 4
- 238000009792 diffusion process Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 102100036738 Guanine nucleotide-binding protein subunit alpha-11 Human genes 0.000 description 1
- 101100283445 Homo sapiens GNA11 gene Proteins 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- QQHSIRTYSFLSRM-UHFFFAOYSA-N alumanylidynechromium Chemical compound [Al].[Cr] QQHSIRTYSFLSRM-UHFFFAOYSA-N 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 229910052703 rhodium Inorganic materials 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Landscapes
- Exhaust Gas After Treatment (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Catalysts (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、触媒コンバータ用
メタル担体に係り、特に、自動車のエンジン等から排出
される排気ガスの浄化手段として使用される触媒コンバ
ータに用いられるメタル担体に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a metal carrier for a catalytic converter, and more particularly to a metal carrier used for a catalytic converter used as a means for purifying exhaust gas discharged from an automobile engine or the like.
【０００２】[0002]
【従来の技術】従来、自動車用エンジンの排気流路等に
配設される触媒コンバータには、図４に示すようなメタ
ル担体が用いられ、このメタル担体を外筒（コンテナ）
に収納し、これを筒状の遮蔽板の一方から圧入してなる
ものが知られている。このメタル担体は、平板及び波板
を巻回してセルを形成した後、外筒を用いてレーシング
トラック型として拡散接合して形成される。2. Description of the Related Art Conventionally, a metal carrier as shown in FIG. 4 is used in a catalytic converter arranged in an exhaust passage of an automobile engine, and the metal carrier is used as an outer cylinder (container).
It is known that it is housed in a cylinder and is press-fitted from one side of the cylindrical shielding plate. This metal carrier is formed by winding a flat plate and a corrugated plate to form a cell, and then diffusion-bonding as a racing track type using an outer cylinder.
【０００３】[0003]
【発明が解決しようとする課題】しかし、上記従来の触
媒コンバータ用メタル担体においては、側面に相対向す
る平面部が存在するため、外筒が熱と内圧とで外側に膨
張し、この膨らみにより内部のセル切れが発生するとい
う問題点があった。また、従来の触媒コンバータ用メタ
ル担体においては、例えば、実開平６−３０４１８号公
報に記載のように、メタル担体の変形を防止するため、
筒状容器の両側の短径方向の外皮部に周方向に沿った一
対の帯状の補強板を装着しているが、外周が大きくな
り、設置場所のレイアウトが厳しい場合には、車載する
ことができないという問題点があった。更に、従来の触
媒コンバータ用メタル担体においては、絞り率（圧縮
率）をかけて拡散接合によって形成されていたが、上記
側面の相対向する平面部においては圧縮率が弱く、接合
しづらいという問題点があった。However, in the above-mentioned conventional metal carrier for a catalytic converter, since the flat portions facing each other are present on the side surfaces, the outer cylinder expands outward due to heat and internal pressure, and due to this bulge. There was a problem that internal cells were cut off. Further, in a conventional metal carrier for a catalytic converter, for example, as described in Japanese Utility Model Publication No. 6-30418, in order to prevent deformation of the metal carrier,
A pair of strip-shaped reinforcing plates along the circumferential direction are attached to the outer skin in the minor axis direction on both sides of the cylindrical container.However, if the outer circumference is large and the layout of the installation location is strict, it may be mounted on the vehicle. There was a problem that it could not be done. Further, in the conventional metal carrier for a catalytic converter, it is formed by diffusion bonding by applying a reduction ratio (compression ratio), but the compression ratio is weak in the flat portions of the side surfaces facing each other, and it is difficult to bond them. There was a point.
【０００４】本発明は、このような課題に鑑みてなされ
たものであり、その目的とするところは、外筒に熱及び
内圧が加わっても内部のセル切れが発生することがな
く、車載が容易で、側面の相対向する平面部においても
容易に接合することのできる触媒コンバータ用メタル担
体を提供することにある。The present invention has been made in view of the above problems, and an object thereof is to prevent the internal cells from being broken even when heat and internal pressure are applied to the outer cylinder, and to mount it on a vehicle. It is an object of the present invention to provide a metal carrier for a catalytic converter, which is easy and can be easily joined even on the opposite flat portions of the side surfaces.
【０００５】[0005]
【課題を解決するための手段】本発明者らは、上記課題
を解決すべく鋭意研究を重ねた結果、側面に相対向する
平面部と相対向する曲面部とを有する外筒を備えたレー
シングトラック型の触媒コンバータ用メタル担体におい
て、上記外筒の相対向する平面部の一部に凹部を形成す
ることにより、上記課題が解決することを見出し、本発
明を完成するに至った。Means for Solving the Problems As a result of intensive studies to solve the above problems, the present inventors have found that a lacing provided with an outer cylinder having a flat surface portion facing each other on a side surface and a curved surface portion facing each other. In the track-type catalytic converter metal carrier, it has been found that the above-mentioned problems can be solved by forming recesses in a part of the flat portions of the outer cylinder facing each other, and has completed the present invention.
【０００６】即ち、外筒の相対向する平面部の一部に凹
部を形成したことにより、この部分の強度が増強され、
外筒の熱変形を抑えることができるとともに、従来使用
していた補強板が不要となる。また、側面の相対向する
平面部においても容易に接合することができる。That is, by forming the concave portion in a part of the flat surface portion of the outer cylinder facing each other, the strength of this portion is increased,
It is possible to suppress thermal deformation of the outer cylinder, and it becomes unnecessary to use the reinforcing plate that has been conventionally used. In addition, it is possible to easily join the flat surfaces of the side surfaces facing each other.
【０００７】[0007]
【発明の実施の形態】以下、本発明の触媒コンバータ用
メタル担体について詳細に説明する。本触媒コンバータ
用メタル担体は、側面に相対向する平面部と相対向する
曲面部とを有する外筒を備え、上面及び下面がレーシン
グトラック状に形成され、外筒の相対向する平面部の一
部に凹部を形成したものである。この触媒コンバータ用
メタル担体にディフューザを取り付けて触媒コンバータ
として用いる。メタル担体の構成材料としては、例え
ば、ステンレス鋼板等が用いられ、メタル担体には、特
に限定はされないが、代表的な例として、Ｐｄ／Ｒｈ、
Ｐｔ／Ｐｄ／Ｒｈ及びＰｔ／Ｒｈ等の触媒を担持するこ
とができる。BEST MODE FOR CARRYING OUT THE INVENTION The metal carrier for a catalytic converter of the present invention will be described in detail below. The metal carrier for a catalytic converter according to the present invention includes an outer cylinder having flat surface portions facing side surfaces and curved surface portions facing each other. The upper surface and the lower surface are formed in a racing track shape. A recess is formed in the part. A diffuser is attached to the metal carrier for the catalytic converter to be used as the catalytic converter. As a constituent material of the metal carrier, for example, a stainless steel plate or the like is used, and the metal carrier is not particularly limited, but as a typical example, Pd / Rh,
A catalyst such as Pt / Pd / Rh and Pt / Rh can be supported.
【０００８】外筒の相対向する平面部に形成した凹部
を、触媒コンバータ用メタル担体のガスの流れ方向と並
行に形成することが好ましい。これより、より多くのセ
ルを確保することができ、触媒性能の低下を招きにくく
なる。It is preferable that the recesses formed in the flat portions facing each other of the outer cylinder are formed in parallel with the gas flow direction of the metal carrier for the catalytic converter. As a result, it is possible to secure a larger number of cells, and it is less likely that the catalyst performance will deteriorate.
【０００９】また、上記凹部の深さを、上記外筒の相対
向する平面部の間の距離の１％以上、１４％以下とする
とともに、上記凹部の幅を、上記凹部の深さの２倍以上
とすることが好ましい。凹部の深さが外筒の相対向する
平面部の間の距離の１％未満であると、増強される強度
が小さいため好ましくなく、凹部の深さが外筒の相対向
する平面部の間の距離の１４％を超えると、利用するこ
とのできなくなるセルの数が多くなるため好ましくな
い。Further, the depth of the recess is 1% or more and 14% or less of the distance between the flat portions of the outer cylinder facing each other, and the width of the recess is 2% of the depth of the recess. It is preferable that the number is twice or more. When the depth of the recess is less than 1% of the distance between the flat portions of the outer cylinder facing each other, the strength to be strengthened is small, which is not preferable, and the depth of the recess is between the flat portions of the outer cylinder facing each other. If the distance exceeds 14%, the number of cells that cannot be used increases, which is not preferable.
【００１０】上記凹部は、上記外筒の相対向する平面部
の各々の少なくとも１本以上形成されることが好まし
い。即ち、１本であっても複数であってもよい。また、
この凹部は、メタル担体の上流側セル端部から下流側セ
ル端部まで連続することが好ましい。断続的に形成する
ことも可能であるが、製造が困難であるため、敢えて断
続的に形成することもない。上記外筒の板厚は、１〜３
ｍｍであることが好ましい。１ｍｍ未満では変形を抑え
にくくなり、３ｍｍを超えるとコスト及び重量の面から
好ましくない。It is preferable that at least one of the flat portions of the outer cylinder facing each other is formed. That is, the number may be one or plural. Also,
This recess is preferably continuous from the upstream cell end to the downstream cell end of the metal carrier. Although it is possible to form intermittently, since it is difficult to manufacture, it is not intentionally formed intermittently. The plate thickness of the outer cylinder is 1 to 3
It is preferably mm. If it is less than 1 mm, it is difficult to suppress the deformation, and if it exceeds 3 mm, it is not preferable in terms of cost and weight.
【００１１】[0011]
【実施例】以下、本発明を実施例により更に詳細に説明
するが、本発明は、これら実施例に限定されるものでは
ない。なお、以下の説明において、触媒コンバータ用メ
タル担体の各部の寸法については、主に、図４に示す符
号を用いる。EXAMPLES The present invention will now be described in more detail with reference to examples, but the present invention is not limited to these examples. In the following description, the reference numerals shown in FIG. 4 are mainly used for the dimensions of each part of the catalytic converter metal carrier.
【００１２】（実施例１）表１及び図１に示すように、
板厚が３０μｍのＡｌ−Ｃｒ鋼板からなる平板及び波板
を巻回してセルを形成した後、板厚（Ｔ）２ｍｍの外筒
を用いて長さ（Ｌ２）１５４ｍｍ、幅（Ｌ０）１１６．
４ｍｍ、厚さ（Ｌ３）７０ｍｍ、曲線部の半径（Ｒ）３
５ｍｍ及び幅部分の平面部長さ（Ｌ１）が４６．４ｍｍ
のレーシングトラック型のメタル担体を形成し、拡散接
合時にこのメタル担体を治具で固定し、所定の圧力をか
けてメタル担体外筒の両平面部の中央部に、ガス流れ方
向と並行となるように、上流側セル端部から下流側セル
端部まで連続した半径ｒ１＝６ｍｍ、幅１２ｍｍの凹部
を有するメタル担体を得た。次いで、このメタル担体を
用い、公知の方法によりＰｄ／Ｒｈ金属触媒を担体にコ
ーティングして実施例１のメタル担体担持の触媒コンバ
ータを得た。(Example 1) As shown in Table 1 and FIG.
After a flat plate and a corrugated plate made of an Al—Cr steel plate having a plate thickness of 30 μm are wound to form a cell, a length (L2) 154 mm and a width (L0) 116.
4 mm, thickness (L3) 70 mm, radius of curved part (R) 3
5 mm and the plane length (L1) of the width part is 46.4 mm
Racing track type metal carrier is formed, this metal carrier is fixed with a jig at the time of diffusion bonding, a predetermined pressure is applied, and it is parallel to the gas flow direction at the center of both flat parts of the metal carrier outer cylinder. Thus, a metal carrier having a recess having a radius r1 of 6 mm and a width of 12 mm that was continuous from the upstream cell end to the downstream cell end was obtained. Next, using this metal carrier, a Pd / Rh metal catalyst was coated on the carrier by a known method to obtain a catalytic converter carrying the metal carrier of Example 1.
【００１３】[0013]
【表１】 [Table 1]
【００１４】得られた実施例１のメタル担持の触媒にデ
ィフューザを取り付けて触媒コンバータ化し、これをエ
ンジンに取り付け、運転時のガス流量が１．１ｍ３／ｍ
ｉｎとなるようにして、触媒入口温度が９２０℃にて１
０分間保持した後、エンジンを停止して３０分間放置す
ることを３００サイクル繰り返す耐久試験を実施した。
触媒担体に関して平面部分（Ｌ１）の最大膨らみ量を耐
久前後（耐久試験後Ｌ３−耐久試験前Ｌ３）で測定を行
った結果、１．１ｍｍであった。なお、耐久前後のＬ３
の測定については、図４のＡ−Ｂ及びＣ−Ｄ間の数カ所
を測定したＬ３の平均値である。A diffuser was attached to the obtained metal-supported catalyst of Example 1 to form a catalytic converter, which was attached to an engine and the gas flow rate during operation was 1.1 m 3 / m.
so that the catalyst inlet temperature is 920 ° C.
After holding for 0 minutes, the durability test was carried out by repeating the cycle of stopping the engine and leaving it for 30 minutes for 300 cycles.
The maximum swelling amount of the flat surface portion (L1) of the catalyst carrier was measured before and after durability test (after endurance test L3 to before endurance test L3), and the result was 1.1 mm. L3 before and after endurance
The average value of L3 measured at several points between AB and CD of FIG. 4 is measured.
【００１５】（実施例２）図２に示すように、半径ｒ２
＝２３．２ｍｍにて、幅２３．２ｍｍ、深さ６ｍｍの凹
部を形成した以外は、実施例１と同様の操作を繰り返し
て、実施例２のメタル担持の触媒を得た。得られた実施
例２の触媒コンバータをエンジンに取り付け、運転時の
ガス流量が１．１ｍ３／ｍｉｎとなるようにして触媒入
口温度が９２０℃にて１０分間保持した後、エンジンを
停止して３０分間放置することを３００サイクル繰り返
す耐久試験を実施した。触媒担体に関して平面部分（Ｌ
１）の最大膨らみ量を耐久前後（耐久試験後Ｌ３−耐久
試験前Ｌ３）で測定を行った結果、０．４ｍｍであっ
た。(Embodiment 2) As shown in FIG. 2, a radius r2
= 23.2 mm, a metal-supported catalyst of Example 2 was obtained by repeating the same operation as in Example 1 except that a recess having a width of 23.2 mm and a depth of 6 mm was formed. The obtained catalytic converter of Example 2 was attached to the engine, and the catalyst inlet temperature was kept at 920 ° C. for 10 minutes so that the gas flow rate during operation was 1.1 m 3 / min, and then the engine was stopped. An endurance test was performed in which leaving for 30 minutes was repeated 300 cycles. Plane part (L
The maximum bulge amount of 1) was measured before and after the endurance (L3 after endurance test-L3 before endurance test), and the result was 0.4 mm.
【００１６】（実施例３）図３に示すように、拡散接合
時にこのメタル担体を治具で固定し、所定の圧力を加
え、メタル担体外筒の両平面部の中央部に、ガス流れ方
向と並行となるように担体端部まで連続するとともに、
深さ８ｍｍの担体曲線部から連続したＶ字状の凹部を形
成した以外は、実施例１と同様の操作を繰り返して、実
施例３のメタル担体担持の触媒を得た。得られた実施例
３の触媒コンバータをエンジンに取り付け、運転時のガ
ス流量が１．１ｍ３／ｍｉｎとなるようにして触媒入口
温度が９２０℃にて１０分間保持した後、エンジンを停
止して３０分間放置することを３００サイクル繰り返す
耐久試験を実施した。触媒担体に関して平面部分（Ｌ
１）の最大膨らみ量を耐久前後（耐久試験後Ｌ３−耐久
試験Ｌ３）で測定を行った結果、０．３ｍｍであった。(Embodiment 3) As shown in FIG. 3, this metal carrier is fixed by a jig at the time of diffusion bonding, a predetermined pressure is applied, and a gas flow direction is applied to the central portion of both flat surfaces of the metal carrier outer cylinder. While continuing to the end of the carrier in parallel with
A catalyst supported on a metal carrier of Example 3 was obtained by repeating the same operation as in Example 1 except that a continuous V-shaped concave portion was formed from a curved support portion having a depth of 8 mm. The obtained catalytic converter of Example 3 was attached to the engine, and the catalyst inlet temperature was maintained at 920 ° C. for 10 minutes so that the gas flow rate during operation was 1.1 m 3 / min, and then the engine was stopped. An endurance test was performed in which leaving for 30 minutes was repeated 300 cycles. Plane part (L
The maximum bulge amount in 1) was measured before and after the durability test (after the durability test, L3 to the durability test L3), and the result was 0.3 mm.
【００１７】（比較例１）図４に示すように、メタル担
体外筒の両平面部に凹部を形成しない以外は、実施例１
と同様の操作を繰り返して、比較例１のメタル担体担持
の触媒を得た。得られた比較例１の触媒コンバータをエ
ンジンに取り付け、運転時のガス流量が１．１ｍ３／ｍ
ｉｎとなるようにして触媒入口温度が９２０℃にて１０
分間保持した後、エンジンを停止させて３０分間放置す
ることを３００サイクル繰り返す耐久試験を実施した。
触媒担体に関して平面部分（Ｌ１）の最大膨らみ量を耐
久前後（耐久試験後Ｌ３−耐久試験Ｌ３）を行った結
果、６．０ｍｍであった。(Comparative Example 1) As shown in FIG. 4, Example 1 was repeated except that no recess was formed in both flat surface portions of the metal carrier outer cylinder.
The same operation as above was repeated to obtain a metal carrier-supported catalyst of Comparative Example 1. The obtained catalytic converter of Comparative Example 1 was attached to an engine, and the gas flow rate during operation was 1.1 m 3 / m.
The catalyst inlet temperature is 920 ° C. at 10
A durability test was carried out in which the engine was stopped and allowed to stand for 30 minutes after 300 minutes, which was repeated 300 cycles.
The maximum swelling amount of the flat surface portion (L1) of the catalyst carrier was 6.0 mm as a result of performing before and after durability test (L3 after durability test-L3 durability test).
【００１８】以上のように、比較例１では、平面部の膨
らみ量が６ｍｍであったのに対し、各実施例において
は、平面部の膨らみ量が１．１ｍｍ以下と大幅に膨らみ
量が低下していることがわかる。As described above, in Comparative Example 1, the swelling amount of the flat surface portion was 6 mm, whereas in each embodiment, the swelling amount of the flat surface portion was 1.1 mm or less, which was a large decrease. You can see that
【００１９】[0019]
【発明の効果】以上説明したように、本発明によれば、
側面に相対向する平面部と相対向する曲面部とを有する
外筒を備えたレーシングトラック型の触媒コンバータ用
メタル担体において、上記外筒の相対向する平面部の一
部に凹部を形成することとしたため、外筒に熱及び内圧
が加わっても内部のセル切れが発生することがなく、車
載が容易で、側面の相対向する平面部においても容易に
接合することのできる触媒コンバータ用メタル担体を提
供することができる。As described above, according to the present invention,
In a racing track type metal carrier for a catalytic converter having an outer cylinder having flat surfaces facing each other on side surfaces and curved surfaces facing each other, a recess is formed in a part of the flat surfaces facing each other of the outer cylinder. Therefore, even if heat and internal pressure are applied to the outer cylinder, internal cell breakage does not occur, it is easy to mount on the vehicle, and the metal carrier for a catalytic converter that can be easily joined even on the opposite flat portions of the side surfaces Can be provided.
【図１】本発明にかかる触媒コンバータ用メタル担体の
実施例１を示す図であって、（ａ）は概略斜視図、
（ｂ）は一部平面図である。FIG. 1 is a view showing a first embodiment of a metal carrier for a catalytic converter according to the present invention, in which (a) is a schematic perspective view,
(B) is a partial plan view.
【図２】本発明にかかる触媒コンバータ用メタル担体の
実施例２を示す図であって、（ａ）は概略斜視図、
（ｂ）は一部平面図である。FIG. 2 is a diagram showing a second embodiment of a metal carrier for a catalytic converter according to the present invention, in which (a) is a schematic perspective view,
(B) is a partial plan view.
【図３】本発明にかかる触媒コンバータ用メタル担体の
実施例２を示す図であって、（ａ）は概略斜視図、
（ｂ）は一部平面図である。FIG. 3 is a diagram showing a second embodiment of a metal carrier for a catalytic converter according to the present invention, (a) is a schematic perspective view,
(B) is a partial plan view.
【図４】本発明にかかる触媒コンバータ用メタル担体の
一例を示す概略斜視図である。FIG. 4 is a schematic perspective view showing an example of a metal carrier for a catalytic converter according to the present invention.
Ｌ０ 幅 Ｌ１ 幅部分の平面部長さ Ｌ２ 長さ Ｌ３ 厚さ Ｒ 半径 Ｔ 板厚 ｌ１ 凹部へこみ量 ｒ１ 凹部半径 ｌ２ 凹部へこみ量 ｒ２ 凹部半径 L0 width L1 Plane length of width part L2 length L3 thickness R radius T plate thickness l1 Amount of depression r1 concave radius l2 Amount of depression r2 concave radius
───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 3G091 AA02 AB01 BA10 BA39 FB03 FC08 GA09 GA11 GA16 GB01X GB05W GB06W GB07W 4D048 BA39X BB02 BB20 4G069 AA01 BA17 BC16B BC58B BC66B CA03 DA06 EA21 EA24 EA26 EB03 ─────────────────────────────────────────────────── ─── Continued front page F term (reference) 3G091 AA02 AB01 BA10 BA39 FB03 FC08 GA09 GA11 GA16 GB01X GB05W GB06W GB07W 4D048 BA39X BB02 BB20 4G069 AA01 BA17 BC16B BC58B BC66B CA03 DA06 EA21 EA24 EA26 EB03
Claims (6)
面部とを有する外筒を備えたレーシングトラック型の触
媒コンバータ用メタル担体であって、 上記外筒の相対向する平面部の一部に凹部を形成したこ
とを特徴とする触媒コンバータ用メタル担体。1. A racing track type metal carrier for a catalytic converter, comprising an outer cylinder having flat surfaces facing each other on side surfaces and curved surfaces facing each other, wherein one of the flat surfaces facing each other of the outer cylinder. A metal carrier for a catalytic converter, characterized in that a recess is formed in the portion.
体のガスの流れ方向と並行に形成したことを特徴とする
請求項１に記載の触媒コンバータ用メタル担体。2. The metal carrier for a catalytic converter according to claim 1, wherein the recess is formed in parallel with a gas flow direction of the metal carrier for the catalytic converter.
る平面部の間の距離の１％以上、１４％以下とするとと
もに、上記凹部の幅を、上記凹部の深さの２倍以上とし
たことを特徴とする請求項１又は２に記載の触媒コンバ
ータ用メタル担体。3. The depth of the recess is 1% or more and 14% or less of the distance between the flat portions of the outer cylinder facing each other, and the width of the recess is 2% of the depth of the recess. The metal carrier for a catalytic converter according to claim 1 or 2, wherein the metal carrier is doubled or more.
部の各々に少なくとも１本以上形成されることを特徴と
する請求項１〜３のいずれか１つの項に記載の触媒コン
バータ用メタル担体。4. The catalytic converter according to claim 1, wherein at least one recess is formed in each of the flat portions of the outer cylinder facing each other. Metal carrier.
端部から下流側セル端部まで連続することを特徴とする
請求項１〜４のいずれか１つの項に記載の触媒コンバー
タ用メタル担体。5. The metal for a catalytic converter according to claim 1, wherein the recess is continuous from an upstream cell end to a downstream cell end of the metal carrier. Carrier.
を特徴とする請求項１〜５のいずれか１つの項に記載の
触媒コンバータ用メタル担体。6. The metal carrier for a catalytic converter according to any one of claims 1 to 5, wherein the outer cylinder has a plate thickness of 1 to 3 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002123356A JP2003314266A (en) | 2002-04-25 | 2002-04-25 | Metal carrier for catalytic converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002123356A JP2003314266A (en) | 2002-04-25 | 2002-04-25 | Metal carrier for catalytic converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003314266A true JP2003314266A (en) | 2003-11-06 |
Family
ID=29538668
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2002123356A Pending JP2003314266A (en) | 2002-04-25 | 2002-04-25 | Metal carrier for catalytic converter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2003314266A (en) |
-
2002
- 2002-04-25 JP JP2002123356A patent/JP2003314266A/en active Pending
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