JPH04190850A - Metal carrier for exhaust gas purifying catalyst - Google Patents
Metal carrier for exhaust gas purifying catalystInfo
- Publication number
- JPH04190850A JPH04190850A JP2318218A JP31821890A JPH04190850A JP H04190850 A JPH04190850 A JP H04190850A JP 2318218 A JP2318218 A JP 2318218A JP 31821890 A JP31821890 A JP 31821890A JP H04190850 A JPH04190850 A JP H04190850A
- Authority
- JP
- Japan
- Prior art keywords
- outer cylinder
- honeycomb body
- flat plate
- exhaust gas
- metal 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
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 26
- 239000002184 metal Substances 0.000 title claims abstract description 25
- 239000003054 catalyst Substances 0.000 title claims description 22
- 238000009792 diffusion process Methods 0.000 claims abstract description 13
- 238000000746 purification Methods 0.000 claims description 16
- 238000004804 winding Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 33
- 229910000679 solder Inorganic materials 0.000 abstract description 10
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 abstract description 8
- 229910052759 nickel Inorganic materials 0.000 abstract description 3
- 238000005219 brazing Methods 0.000 description 11
- 239000010935 stainless steel Substances 0.000 description 4
- 229910001220 stainless steel Inorganic materials 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910000510 noble metal Inorganic materials 0.000 description 2
- 229910019589 Cr—Fe Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 239000010953 base metal Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000005476 soldering 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
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
- F01N3/28—Construction of catalytic reactors
- F01N3/2839—Arrangements for mounting catalyst support in housing, e.g. with means for compensating thermal expansion or vibration
- F01N3/2842—Arrangements for mounting catalyst support in housing, e.g. with means for compensating thermal expansion or vibration specially adapted for monolithic supports, e.g. of honeycomb type
-
- 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
- F01N2330/00—Structure of catalyst support or particle filter
- F01N2330/02—Metallic plates or honeycombs, e.g. superposed or rolled-up corrugated or otherwise deformed sheet metal
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Gas After Treatment (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Catalysts (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、内燃機関の排気ガス浄化触媒に用いられるメ
タル担体に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a metal carrier used in an exhaust gas purification catalyst for an internal combustion engine.
〔従来の技術）
排気ガス浄化触媒用メタル担体として、例えば特開昭５
６＝４３７３号公報などにみられるように、波板と平板
とを重ねてロール状に巻回してハニカム体を形成し、そ
のハニカム体を金属製外筒内に収納したものが知られて
いる。このメタル担体では、ハニカム体のハニカム通路
表面にアルミナなどからなる触媒担持層が形成され、そ
の触媒担持層に貴金属触媒が担持されて排気ガス浄化触
媒となる。そして内燃機関の排気通路に配置され、排気
ガス中のＨＣ，Ｃｏ、Ｎ Ｃ）ｘを浄化する。[Prior art] As a metal carrier for exhaust gas purification catalyst, for example,
As seen in Publication No. 6=4373, it is known that a corrugated plate and a flat plate are stacked and wound into a roll to form a honeycomb body, and the honeycomb body is housed in a metal outer cylinder. . In this metal carrier, a catalyst support layer made of alumina or the like is formed on the surface of the honeycomb passages of the honeycomb body, and a noble metal catalyst is supported on the catalyst support layer to become an exhaust gas purification catalyst. It is placed in the exhaust passage of an internal combustion engine to purify HC, Co, and N C)x in the exhaust gas.
なお、限られた体積中にできるだけ多くのハニカム通路
の面積を確保するのが望ましいことから、波板及び平板
の厚さは強度を維持できる範囲でできるだけ薄くされて
いる。そして波板と平板及び外筒とハニカム体とは、通
常ロウ付げによって一体的に接合されている。Note that since it is desirable to secure as much area as possible for honeycomb passages in a limited volume, the thicknesses of the corrugated plates and flat plates are made as thin as possible within a range that maintains strength. The corrugated plate and the flat plate, and the outer cylinder and the honeycomb body are usually integrally joined by brazing.
ハニカム体の波板と平板は、上記したようにそれぞれ薄
い箔状であり、その厚さは一般に５０μｍ程度である。As described above, the corrugated plates and flat plates of the honeycomb body are each in the form of thin foils, and the thickness thereof is generally about 50 μm.
したがって剛性が低（、使用時に排気ガスの流れにより
振動が生じる。この振動により音が発生し、そのためセ
ラミック製のモノリス担体などに比べて騒音レベルが高
いという不具合がある。しかし触媒性能の維持のために
は波板と平板の厚さを厚くすることはできず、インシュ
レータなどの防音対策を必要としている。Therefore, the rigidity is low (During use, the flow of exhaust gas causes vibrations. This vibration generates sound, and therefore the noise level is higher than ceramic monolith supports. However, it is difficult to maintain catalyst performance. To achieve this, it is not possible to increase the thickness of the corrugated plate and the flat plate, and soundproofing measures such as insulators are required.
本発明はこのような事情に鑑みてなされたものであり、
ハニカム体の波板と平板の厚さは従来と同様に薄い状態
を維持するとともに、メタル担体のみで音の発生を防止
することを目的とする。The present invention was made in view of these circumstances, and
The aim is to maintain the thickness of the corrugated plates and flat plates of the honeycomb body as thin as before, and to prevent the generation of sound using only the metal carrier.
上記課題を解決する本発明の排気ガス浄化触媒用メタル
担体は、波板と平板とを重ねてロール状に巻回されて形
成されたハニカム体と、ハニカム体の外周に同軸的に配
置されハニカム体と一体的に接合された外筒と、よりな
る排気ガス浄化触媒用メタル担体において、
外筒は内周側の第１外筒と外周側の第２外筒とよりなる
二重構造をなし、第１外筒がハニカム体に接合されると
ともに第１外筒と第２外筒とは拡散接合により部分的に
接合されてなることを特徴とする。The metal carrier for an exhaust gas purification catalyst of the present invention, which solves the above problems, consists of a honeycomb body formed by stacking a corrugated plate and a flat plate and winding them into a roll, and a honeycomb body arranged coaxially around the outer periphery of the honeycomb body. In the metal carrier for exhaust gas purification catalyst, which consists of an outer cylinder integrally joined to the body, the outer cylinder has a double structure consisting of a first outer cylinder on the inner circumferential side and a second outer cylinder on the outer circumferential side. , the first outer cylinder is joined to the honeycomb body, and the first outer cylinder and the second outer cylinder are partially joined by diffusion bonding.
ハニカム体は、波板と平板とを重ねた状態でロール状に
巻回されて形成されている。波板は、通常平板と同材質
で同一板厚を有し、平板を波形状に曲折して形成されて
いる。この波板及び平板は、従来と同様に例えばｋｌ−
Ｃｒ−Ｆｅ合金、ステンレス鋼などから形成される。そ
して前記したように限られた体積中にできるだけ多くの
ノ１ニカム通路の面積を確保することが好ましいことか
ら、板厚は５０μｍなど強度を維持できる範囲で極力薄
くするのが好ましい。このハニカム体は、例えば波板の
頂部にロウ材が塗布された状態で平板と重ねてロール状
に巻回され、その後加熱により一体的に接合される。こ
の加熱はハニカム体のみで行ってもよいが、後述するよ
うに外筒とともに加熱すれば工数を低減することができ
る。The honeycomb body is formed by stacking a corrugated plate and a flat plate and winding them into a roll shape. A corrugated plate is usually made of the same material and has the same thickness as a flat plate, and is formed by bending a flat plate into a wave shape. This corrugated plate and flat plate are, for example, kl-
It is made of Cr-Fe alloy, stainless steel, etc. As described above, since it is preferable to secure as much area as possible for the unicomb passages in a limited volume, it is preferable to make the plate thickness as thin as possible, such as 50 μm, within a range that maintains strength. This honeycomb body is, for example, coated with a brazing material on the top of a corrugated plate, and is rolled up onto a flat plate, and then joined together by heating. Although this heating may be performed only on the honeycomb body, the number of man-hours can be reduced if it is heated together with the outer cylinder as described later.
外筒は例えばステンレス鋼など従来と同様の材質から形
成することができ、その板厚は従来と同様に１〜２ｍｍ
程度である。The outer cylinder can be made of the same material as before, such as stainless steel, and its thickness is 1 to 2 mm as before.
That's about it.
本発明の最大の特徴は、外筒を第１外筒と第２外筒の二
重構造とし、内周側の第１外筒がノ１ニカム体に接合さ
れるとともに、第１外筒と第２外筒とは拡散接合により
部分的に接合されているところにある。すなわち第１外
筒と第２外筒とは、接合部と非接合部とが混在した状態
で一体化され、これにより騒音レベルを低減することが
できる。The most important feature of the present invention is that the outer cylinder has a double structure of a first outer cylinder and a second outer cylinder, and the first outer cylinder on the inner peripheral side is joined to the two-cam body, and the first outer cylinder and It is partially joined to the second outer cylinder by diffusion bonding. That is, the first outer cylinder and the second outer cylinder are integrated with a mixture of jointed parts and non-joined parts, thereby reducing the noise level.
また拡散接合であるため、接合部の組織が外筒母材と同
一化し外筒母材と同等の強度となるので、接合部の破壊
が防止される。Furthermore, since diffusion bonding is used, the structure of the bonded portion becomes the same as that of the outer cylinder base material, and the strength is equivalent to that of the outer cylinder base material, thereby preventing destruction of the bonded portion.
拡散接合による接合部は、第１外筒と第２外筒の接合強
度を維持できる範囲で部分的に設けられる。その位置は
特に制限されず、例えば点状、線状、格子状、編み目状
などとすることができる。The joints formed by diffusion bonding are partially provided within a range where the joint strength between the first outer cylinder and the second outer cylinder can be maintained. The position thereof is not particularly limited, and may be, for example, dotted, linear, grid-like, or mesh-like.
このように拡散接合を行うには、第１外筒と第２外筒と
を直接接合で行うこともできるが、第１外筒と第２外筒
の間にインサート金属としてのアモルファスロウ材を配
置し、真空下で加熱して拡散接合するのが便利である。To perform diffusion bonding in this way, the first outer cylinder and the second outer cylinder can be directly joined, but an amorphous soldering material as an insert metal is inserted between the first outer cylinder and the second outer cylinder. It is convenient to place and heat under vacuum for diffusion bonding.
このようにすれば、ハニカム体の波−板と平板のロウ材
は時、及びハニカム体と外筒とのロウ材は時に同時に拡
散接合することができる。またアモルファスロウ材を配
置する位置を決めることで、容易に接合部の位置決めを
行うことができる。なお、アモルファスロウ材としては
、Ｎｉ系のものを用いることが望ましい。In this way, the corrugated plate of the honeycomb body and the brazing material of the flat plate can be simultaneously diffusion-bonded, and the brazing material of the honeycomb body and the outer cylinder can be simultaneously diffusion-bonded. Furthermore, by determining the position where the amorphous solder material is placed, the position of the joint can be easily determined. Note that it is desirable to use a Ni-based material as the amorphous solder material.
Ｃｕ系や１１？系のロウ材は耐熱性、耐食性に劣るが、
Ｎｉ系のものはこの点に優れているからである。Cu type or 11? Although the brazing materials of this type have poor heat resistance and corrosion resistance,
This is because Ni-based materials are excellent in this respect.
ハニカム体と第１外筒との接合は、部分的でもよいが通
常は全面で接合される。The honeycomb body and the first outer cylinder may be joined partially, but usually the entire surface is joined.
本発明の排気ガス浄化触媒用メタル担体では、触媒とし
ての使用時に排気ガスの流れによりノ１ニカム体が振動
すると、その振動はまず第１外筒に伝わり、次いで第２
外筒に伝わる。ここで第１外筒と第２外筒とは、部分的
に拡散接合され非接合部分を有している。したがって第
１外筒に伝えられた振動は、非接合部で制振されるもの
と推察され、第２外筒の振動は第１外筒の振動に比べて
少な（なる。これにより発生する騒音が低減される。In the metal carrier for an exhaust gas purification catalyst of the present invention, when the two cam body vibrates due to the flow of exhaust gas when used as a catalyst, the vibration is first transmitted to the first outer cylinder, and then to the second outer cylinder.
It is transmitted to the outer cylinder. Here, the first outer cylinder and the second outer cylinder are partially diffusion bonded and have a non-bonded portion. Therefore, it is presumed that the vibrations transmitted to the first outer cylinder are damped at the non-joint parts, and the vibrations of the second outer cylinder are smaller than the vibrations of the first outer cylinder. is reduced.
また第１外筒と第２外筒の接合部は、拡散接合されてい
るため組織が母材と同一化し、高い強度を有している。Further, since the joint between the first outer cylinder and the second outer cylinder is diffusion bonded, the structure is the same as that of the base material, and the joint has high strength.
したがって第１外筒と第２外筒とは強固に一体化し、使
用時の分離が防止されている。Therefore, the first outer cylinder and the second outer cylinder are firmly integrated and are prevented from being separated during use.
すなわち本発明のメタル担体によれば、波板と平板の厚
さを充分薄くできるので、従来と同等の浄化性能を維持
しつつ騒音を防止することができ、かつインシュレータ
などの防音対策が不要となる。In other words, according to the metal carrier of the present invention, since the thickness of the corrugated plate and the flat plate can be made sufficiently thin, it is possible to prevent noise while maintaining the same purification performance as the conventional one, and there is no need for soundproofing measures such as an insulator. Become.
また第１外筒と第２外筒の非接合部に僅かに介在する空
気層が断熱層として機能し、外筒の外表面の温度が低下
するので外筒材質の選択の自由度が増すという効果もあ
る。In addition, the air layer slightly interposed between the non-joint parts of the first and second outer cylinders functions as a heat insulating layer, reducing the temperature of the outer surface of the outer cylinder, increasing the degree of freedom in selecting the material of the outer cylinder. It's also effective.
以下、実施例により具体的に説明する。 Hereinafter, this will be explained in detail using examples.
第１図に本発明の一実施例のメタル担体の構成を示す。FIG. 1 shows the structure of a metal carrier according to an embodiment of the present invention.
このメタル担体は、ハニカム体１と、第１外筒２および
第２外筒３とから構成される。This metal carrier is composed of a honeycomb body 1, a first outer cylinder 2, and a second outer cylinder 3.
以下、このメタル担体の製造方法を説明することで構成
の説明に代える。まずステンレス鋼製で厚さ１〜２ｍｍ
の長方形状の板材２０及び板材３０を用意する。この板
材２０．３０は、それぞれ第１外筒２及び第２外筒３の
展開形状に形成されている。そして第２図に示すように
、板材２０の表面に短辺に平行に破線状に延び、長辺方
向に間隔を隔てて列設するようにロウ材４を配置する。Hereinafter, the method for manufacturing this metal carrier will be explained instead of explaining the structure. First, it is made of stainless steel and has a thickness of 1 to 2 mm.
A rectangular plate material 20 and a rectangular plate material 30 are prepared. The plate members 20 and 30 are formed into the expanded shapes of the first outer cylinder 2 and the second outer cylinder 3, respectively. As shown in FIG. 2, brazing filler metals 4 are arranged on the surface of the plate material 20 so as to extend in a broken line shape parallel to the short sides and are arranged in rows at intervals in the long side direction.
このロウ材４は、Ｎｉ−Ｃｒ−３ｉ−Ｂ系からなる厚さ
２５〜５０μｍの箔状のアモルファスロウであり、片状
に切り出されて形成されている。そして板材２０と板材
３０とでサンドイッチ状に挟み、円筒状に成形するとと
もに端部どうじを溶接して、二重構造の第１外筒２及び
第２外筒３を形成する。The solder material 4 is a foil-like amorphous solder made of Ni-Cr-3i-B and has a thickness of 25 to 50 μm, and is cut into pieces. Then, the plate material 20 and the plate material 30 are sandwiched, formed into a cylindrical shape, and the ends are welded to form the first outer cylinder 2 and the second outer cylinder 3 having a double structure.
次に、厚さ５０μｍのステンレス鋼から形成された波板
１０及び平板１１を重ねてロール状に巻回し、ニッケル
系ロウ材を塗布してハニカム体１を形成する。このとき
最外周に平板１１がくるように巻回し、最外周の平板１
１表面の全面にニッケル系ロウ材を塗布する。そしてこ
のハニカム体１を第１外筒２内に挿入する。Next, a corrugated plate 10 and a flat plate 11 made of stainless steel with a thickness of 50 μm are stacked and wound into a roll, and a nickel-based brazing material is applied to form the honeycomb body 1. At this time, it is wound so that the flat plate 11 is on the outermost periphery, and the flat plate 1 on the outermost periphery is
1. Apply nickel-based brazing material to the entire surface. Then, this honeycomb body 1 is inserted into the first outer cylinder 2.
このハニカム体１と、第１外筒２および第２外筒３とを
、真空下にて１２００℃で５分間加熱する。これにより
ロウ材が溶融して波板１０と平板１１が接合さイしると
ともに、ハニカム体１の外周表面が第１外筒２の内周表
面に接合される。そしてロウ材４がインサート金属とし
て作用し、その部分の第１外筒２と第２外筒３の母材元
素が互いに拡散して、第１外筒２及び第２外笥３はロウ
材４の位置で部分的に拡散接合される。したがってハニ
カム体１と、第１外筒２および第２外筒３とは一体的に
接合され、本実施例の排気ガス浄化触媒用メタル担体が
得られる。This honeycomb body 1, the first outer cylinder 2, and the second outer cylinder 3 are heated at 1200° C. for 5 minutes under vacuum. As a result, the brazing material melts and the corrugated plate 10 and the flat plate 11 are joined together, and the outer peripheral surface of the honeycomb body 1 is joined to the inner peripheral surface of the first outer cylinder 2. Then, the brazing material 4 acts as an insert metal, and the base metal elements of the first outer cylinder 2 and the second outer cylinder 3 in that part diffuse into each other, and the first outer cylinder 2 and the second outer cylinder 3 are formed by the brazing material 4. Partially diffusion bonded at the position. Therefore, the honeycomb body 1, the first outer cylinder 2, and the second outer cylinder 3 are integrally joined, and the metal carrier for the exhaust gas purification catalyst of this example is obtained.
このメタル担体では、第３図に軸を含む平面で切断した
断面を示すように、第１外筒２と第２外筒３との間には
拡散接合部５と非接合部６とが略交互に形成されている
。In this metal carrier, as shown in FIG. 3, which is a cross section cut along a plane including the axis, there is approximately a diffusion bonded portion 5 and a non-bonded portion 6 between the first outer cylinder 2 and the second outer cylinder 3. formed alternately.
この実施例のメタル担体に、公知の方法でアルミナ担持
層を形成し、貴金属触媒を担持させて排気ガス浄化触媒
を形成した。そして第２外筒３をもたないこと以外は実
施例と同様の構成の比較例のメタル担体から形成された
排気ガス浄化触媒とともに、それぞれ同一種類のエンジ
ンの排気系に装着し、それぞれの騒音レベルを測定した
。そして比較例の騒音レベルを１とした場合の比率を第
４図に棒グラフで示す。An alumina support layer was formed on the metal support of this example by a known method, and a noble metal catalyst was supported thereon to form an exhaust gas purification catalyst. Then, they were installed in the exhaust system of the same type of engine together with an exhaust gas purification catalyst formed from a metal carrier of a comparative example having the same configuration as the example except that it did not have the second outer cylinder 3, and the respective noise levels were reduced. The level was measured. The ratio when the noise level of the comparative example is set to 1 is shown in a bar graph in FIG.
第４図より、実施例のメタル担体から形成された排気ガ
ス浄化触媒は、従来の排気ガス浄化触媒に比べて約１０
％程度騒音が低減されていることがわかる。これは非接
合部６で振動が制振されたことによるものと推察される
。From FIG. 4, the exhaust gas purification catalyst formed from the metal carrier of the example has a difference of about 10% compared to the conventional exhaust gas purification catalyst.
It can be seen that the noise is reduced by about %. It is presumed that this is because the vibrations were suppressed in the non-bonded portion 6.
図面は本発明の一実施例の排気ガス浄化触媒用メタル担
体に関し、第１図はその構成を説明する斜視説明図、第
２図は外筒の製造方法を説明する説明図、第３図はその
要部断面図、第４図は実施例と比較例の担体から形成さ
れた排気ガス浄化触媒の騒音レベルの比を示す棒グラフ
である。
１：ハニカム体 ２：第１外筒
３：第２外筒 ４：アモルファスロウ材５、拡散接
合部 ６．非接合部
１０：波板 １１：平板
特許出願人 トヨタ自動車株式会社
代理人 弁理士 大川 宏The drawings relate to a metal carrier for an exhaust gas purification catalyst according to an embodiment of the present invention; FIG. 1 is a perspective explanatory view illustrating its structure, FIG. 2 is an explanatory diagram illustrating a method of manufacturing an outer cylinder, and FIG. FIG. 4, which is a sectional view of the main part thereof, is a bar graph showing the ratio of the noise levels of the exhaust gas purification catalysts formed from the carriers of the example and the comparative example. 1: Honeycomb body 2: First outer cylinder 3: Second outer cylinder 4: Amorphous solder material 5, diffusion bonding part 6. Non-joint part 10: Corrugated plate 11: Flat plate Patent applicant Hiroshi Okawa, Toyota Motor Corporation agent, patent attorney
Claims (1)
されたハニカム体と、該ハニカム体の外周に同軸的に配
置され該ハニカム体と一体的に接合された外筒と、より
なる排気ガス浄化触媒用メタル担体において、 前記外筒は内周側の第１外筒と外周側の第２外筒とより
なる二重構造をなし、該第１外筒が前記ハニカム体に接
合されるとともに該第１外筒と該第２外筒とは拡散接合
により部分的に接合されてなることを特徴とする排気ガ
ス浄化触媒用メタル担体。(1) A honeycomb body formed by stacking a corrugated plate and a flat plate and winding them into a roll, and an outer cylinder coaxially disposed around the outer circumference of the honeycomb body and integrally joined to the honeycomb body; In the metal carrier for an exhaust gas purification catalyst, the outer cylinder has a double structure consisting of a first outer cylinder on the inner circumferential side and a second outer cylinder on the outer circumferential side, and the first outer cylinder is attached to the honeycomb body. A metal carrier for an exhaust gas purification catalyst, characterized in that the first outer cylinder and the second outer cylinder are partially joined by diffusion bonding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2318218A JPH04190850A (en) | 1990-11-22 | 1990-11-22 | Metal carrier for exhaust gas purifying catalyst |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2318218A JPH04190850A (en) | 1990-11-22 | 1990-11-22 | Metal carrier for exhaust gas purifying catalyst |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04190850A true JPH04190850A (en) | 1992-07-09 |
Family
ID=18096753
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2318218A Pending JPH04190850A (en) | 1990-11-22 | 1990-11-22 | Metal carrier for exhaust gas purifying catalyst |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04190850A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1055873C (en) * | 1995-03-02 | 2000-08-30 | 发射技术有限公司 | Honeycombed body with only partial attachment to a protective tube |
| JP2001501705A (en) * | 1996-10-04 | 2001-02-06 | エミテツク ゲゼルシヤフト フユア エミツシオンステクノロギー ミツト ベシユレンクテル ハフツング | Honeycomb body with heat insulator especially for exhaust gas catalyst |
-
1990
- 1990-11-22 JP JP2318218A patent/JPH04190850A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1055873C (en) * | 1995-03-02 | 2000-08-30 | 发射技术有限公司 | Honeycombed body with only partial attachment to a protective tube |
| JP2001501705A (en) * | 1996-10-04 | 2001-02-06 | エミテツク ゲゼルシヤフト フユア エミツシオンステクノロギー ミツト ベシユレンクテル ハフツング | Honeycomb body with heat insulator especially for exhaust gas catalyst |
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