JPH063444U - Honeycomb catalytic converter - Google Patents
Honeycomb catalytic converterInfo
- Publication number
- JPH063444U JPH063444U JP4679292U JP4679292U JPH063444U JP H063444 U JPH063444 U JP H063444U JP 4679292 U JP4679292 U JP 4679292U JP 4679292 U JP4679292 U JP 4679292U JP H063444 U JPH063444 U JP H063444U
- Authority
- JP
- Japan
- Prior art keywords
- honeycomb
- cushioning material
- catalyst carrier
- casing
- catalytic converter
- 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
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- Exhaust Gas After Treatment (AREA)
Abstract
(57)【要約】
【目的】部品点数の低減により製作費の低廉化を図ると
同時に、通気抵抗の減少によりエンジン性能の向上を図
る。
【構成】ケーシング1の内側にハニカム触媒担体2を、
緩衝材10を介して支持する。緩衝材10を、金属繊維
を圧縮した金属たわし状とする。金属繊維に触媒を付着
させる。排気の一部は、上記緩衝材10の内側を流れ
る。
(57) [Summary] [Purpose] To reduce the manufacturing cost by reducing the number of parts, and at the same time improve the engine performance by reducing the ventilation resistance. [Structure] A honeycomb catalyst carrier 2 is provided inside a casing 1,
It is supported via the cushioning material 10. The cushioning material 10 has a metal scrubber shape in which metal fibers are compressed. The catalyst is attached to the metal fibers. Part of the exhaust gas flows inside the cushioning material 10.
Description
【0001】[0001]
この考案に係るハニカム触媒コンバータは、自動車の排気系の途中に設けて、 エンジンから排出される排気中に含まれる有害成分を無害化処理する。 The honeycomb catalytic converter according to the present invention is provided in the middle of the exhaust system of an automobile to detoxify harmful components contained in the exhaust discharged from the engine.
【0002】[0002]
自動車の走行用エンジンから排出される排気中に含まれる有害成分(NOx 、CO 、HC等)を無害化処理する為、エンジンから排出される排気を大気中に排出する 為の排気系の途中に、触媒コンバータを設ける事が広く行なわれている。 In order to detoxify harmful components (NOx, CO, HC, etc.) contained in the exhaust gas emitted from the automobile engine, the exhaust system exhausts the exhaust gas to the atmosphere. It is widely practiced to provide a catalytic converter.
【0003】 触媒コンバータとしては、従来から各種構造のものが知られているが、セラミ ックをハニカム状に形成したハニカム担体の表面に、白金等の触媒を付着させた ものが、有害物質を浄化する効率が良く、排気の流通抵抗も小さい事から広く使 用されている。Conventionally, various types of catalyst converters having various structures have been known. However, a substance in which a catalyst such as platinum is attached to the surface of a honeycomb carrier having a ceramic-like honeycomb structure can remove harmful substances. It is widely used because of its good purification efficiency and low exhaust flow resistance.
【0004】 図4は、従来から広く使用されていた、この様なハニカム触媒コンバータの1 例を示している。このハニカム触媒コンバータは、ケーシング1内にハニカム触 媒担体2を、緩衝材3、4を介して緩衝的に収納し、ケーシング1の内周面1a とハニカム触媒担体2の外周面2aとの間に不通気性のマット5を設けて、排気 がハニカム触媒担体2を通らず、上記両周面1a、2aの間をバイパスする事を 防止している。FIG. 4 shows an example of such a honeycomb catalytic converter that has been widely used in the past. This honeycomb catalyst converter accommodates a honeycomb catalyst carrier 2 in a casing 1 via buffer materials 3 and 4 in a buffer manner, and between the inner peripheral surface 1a of the casing 1 and the outer peripheral surface 2a of the honeycomb catalyst carrier 2. An air-impermeable mat 5 is provided on the inside to prevent exhaust gas from passing through the honeycomb catalyst carrier 2 and bypassing between the peripheral surfaces 1a, 2a.
【0005】 例えば金属板をプレス成形する事で造られた1対の半片を最中状に組み合わせ て成るケーシング1は、前後両端に形成された排気入口6及び排気出口7と、中 間部に形成された筒状の保持部8とを、段部9、9で連続させる事により、構成 されている。上記保持部8の内径は、排気入口6及び排気出口7の内径よりも十 分に大きく形成している。For example, a casing 1 formed by press-forming a metal plate and combining a pair of halves in the middle has an exhaust inlet 6 and an exhaust outlet 7 formed at both front and rear ends, and a casing 1 It is configured by connecting the formed cylindrical holding portion 8 with the step portions 9 and 9. The inner diameter of the holding portion 8 is made sufficiently larger than the inner diameters of the exhaust inlet 6 and the exhaust outlet 7.
【0006】 上述の様なケーシング1内にハニカム触媒担体2を緩衝的に支持する為の緩衝 材3、4の内、触媒担体2の外周面に巻回する緩衝材3は、ステンレス鋼線の金 網を波形に形成して成り、ケーシング1の内周面1aとハニカム触媒担体2の外 周面2aとの間で弾性的に圧縮された状態で、上記触媒担体2を緩衝的に支持す る。Among the cushioning materials 3 and 4 for buffer-supporting the honeycomb catalyst carrier 2 in the casing 1 as described above, the cushioning material 3 wound around the outer peripheral surface of the catalyst carrier 2 is made of stainless steel wire. The metal mesh is formed in a corrugated shape, and the catalyst carrier 2 is bufferedly supported while being elastically compressed between the inner peripheral surface 1a of the casing 1 and the outer peripheral surface 2a of the honeycomb catalyst carrier 2. It
【0007】 又、ケーシング1の段部9、9とハニカム触媒担体2の隅角部との間に設ける 緩衝材4、4は、ステンレス鋼細線を筒状に編んだ金網をプレス成形して成り、 脆いハニカム触媒担体2の隅角部がケーシング1の内面に衝突して損傷する事を 防止する。Further, the cushioning materials 4 and 4 provided between the stepped portions 9 and 9 of the casing 1 and the corner portions of the honeycomb catalyst carrier 2 are formed by press-molding a metal net made of stainless steel thin wires knitted in a tubular shape. This prevents the corner portion of the brittle honeycomb catalyst carrier 2 from colliding with and damaging the inner surface of the casing 1.
【0008】 更に、不通気性のマット5は、例えば特開昭51−69507号公報に開示さ れている様に、膨張性雲母等の熱膨張性を有する物質を含有し、熱膨張後に上記 ハニカム触媒担体2の外周面2aとケーシング1の保持部8の内周面1aとの間 に充満して、両周面間2a、1aの気密保持を図る。Further, the air-impermeable mat 5 contains a substance having a heat-expanding property such as expansive mica as disclosed in, for example, JP-A-51-69507, and after the thermal expansion, The space between the outer peripheral surface 2a of the honeycomb catalyst carrier 2 and the inner peripheral surface 1a of the holding portion 8 of the casing 1 is filled to maintain airtightness between the peripheral surfaces 2a and 1a.
【0009】 上述の様に構成されるハニカム触媒コンバータの使用時には、有害物質を含む 排気を、排気入口6からケーシング1内に送り込み、更にこの排気を、ハニカム 触媒担体2を通過させてから、排気出口7より排出する。ハニカム触媒担体2を 通過する間に排気中の有害成分は、この触媒担体2の表面に付着した触媒の作用 によって酸化、還元され、無害な物質に変化する。When the honeycomb catalytic converter configured as described above is used, exhaust gas containing harmful substances is sent into the casing 1 through the exhaust gas inlet 6, the exhaust gas is passed through the honeycomb catalyst carrier 2, and then exhausted. Discharge from the outlet 7. While passing through the honeycomb catalyst carrier 2, the harmful components in the exhaust gas are oxidized and reduced by the action of the catalyst adhering to the surface of the catalyst carrier 2, and converted into harmless substances.
【0010】[0010]
本考案のハニカム触媒コンバータは、部品点数を低減させる事で、部品管理、 組立工数の低減を図り、製作費の低減を図ると共に、通気抵抗の減少により、エ ンジンの出力(ネット値)向上を図るものである。 The honeycomb catalytic converter of the present invention reduces the number of parts to reduce the number of parts management and the number of assembling steps to reduce the manufacturing cost and the ventilation resistance to improve the engine output (net value). It is intended.
【0011】 前記従来構造の場合、ハニカム触媒担体2の外周面2aとケーシング1の保持 部8の内周面1aとの間に、不通気性のマット5を挟持する必要があり、このマ ット5を設ける分だけ、部品管理と組立工数とが増大して、ハニカム触媒コンバ ータの製作費が嵩む事が避けられなかった。In the case of the conventional structure described above, it is necessary to sandwich the impermeable mat 5 between the outer peripheral surface 2 a of the honeycomb catalyst carrier 2 and the inner peripheral surface 1 a of the holding portion 8 of the casing 1. It is inevitable that the manufacturing cost of the honeycomb catalyst converter will increase due to the increase in parts management and assembly man-hours due to the provision of grate 5.
【0012】 又、上記外周面2aと内周面1aとの間の空間を排気が流通しない分、保持部 8の断面積に比較して排気の流通面積が小さくなり、ハニカム触媒コンバータの 通気抵抗が大きくなってエンジンの背圧が高まり、このエンジンの出力が低下す る。Further, since the exhaust gas does not flow through the space between the outer peripheral surface 2a and the inner peripheral surface 1a, the flow area of the exhaust gas becomes smaller than the cross-sectional area of the holding portion 8, and the ventilation resistance of the honeycomb catalytic converter is reduced. Increases, the back pressure of the engine increases, and the output of this engine decreases.
【0013】 本考案のハニカム触媒コンバータは、上述の様な事情に鑑みて考案されたもの である。The honeycomb catalytic converter of the present invention was devised in view of the above circumstances.
【0014】[0014]
本考案のハニカム触媒コンバータは、前述した従来のハニカム触媒コンバータ と同様に、中間部に筒状の保持部を、前端部に排気入口を、後端部に排気出口を 、それぞれ有するケーシングと、上記保持部の内側に支持されるハニカム触媒担 体と、このハニカム触媒担体の外周面と上記保持部の内周面との間に挟持される 緩衝材とから構成される。 The honeycomb catalytic converter of the present invention is similar to the above-mentioned conventional honeycomb catalytic converter in that the casing has a cylindrical holding portion at the middle portion, an exhaust inlet at the front end portion, and an exhaust outlet at the rear end portion, and The honeycomb catalyst carrier is supported inside the holder, and the cushioning material is sandwiched between the outer peripheral surface of the honeycomb catalyst carrier and the inner peripheral surface of the holder.
【0015】 特に、本考案のハニカム触媒コンバータに於いては、緩衝材は、鉄中にアルミ ニウムとクロムとを含むフェライト系ステンレス鋼繊維を多数、軽く圧縮して成 るものであり、各繊維の表面には微細なウィスカを多数形成しており、この多数 のウィスカによって、各繊維の表面に触媒が担持されている事を特徴としている 。In particular, in the honeycomb catalytic converter of the present invention, the buffer material is formed by lightly compressing a large number of ferritic stainless steel fibers containing aluminum and chromium in iron. A large number of fine whiskers are formed on the surface of, and the feature is that the catalyst is supported on the surface of each fiber by the large number of whiskers.
【0016】[0016]
上述の様に構成される本考案のハニカム触媒コンバータの使用時に於いては、 ハニカム触媒担体の外周面とケーシングの保持部の内周面との間の空間にも、排 気が流通する。そしてこの空間を流通する排気は、緩衝材を構成する多数の繊維 の表面に担持された触媒と接触する事で無害化処理されてから、上記ケーシング の後端部に設けた排気出口から、ケーシング外に排出される。 When the honeycomb catalytic converter of the present invention configured as described above is used, the exhaust gas also flows into the space between the outer peripheral surface of the honeycomb catalyst carrier and the inner peripheral surface of the holding portion of the casing. Exhaust gas flowing through this space is detoxified by contact with the catalyst carried on the surface of many fibers that make up the cushioning material, and then exhausted from the exhaust outlet provided at the rear end of the casing to the casing. It is discharged outside.
【0017】[0017]
図1〜3は本考案の実施例を示している。本考案のハニカム触媒コンバータは 、前述した従来のハニカム触媒コンバータと同様に、ケーシング1内にハニカム 触媒担体2を緩衝的に収納している。ケーシング1の内周面1aとハニカム触媒 担体2の外周面2aとの間には、緩衝材10を設けている。 1 to 3 show an embodiment of the present invention. In the honeycomb catalytic converter of the present invention, as in the conventional honeycomb catalytic converter described above, the honeycomb catalytic carrier 2 is accommodated in the casing 1 in a buffer manner. A cushioning material 10 is provided between the inner peripheral surface 1 a of the casing 1 and the outer peripheral surface 2 a of the honeycomb catalyst carrier 2.
【0018】 この緩衝材10は、例えば特開昭57−71898号公報等に記載されている 様な、アルミニウムを含むフェライト系ステンレス鋼(例えばFe-20Cr-5Al )の 繊維を多数、軽く圧縮する事により、金属たわし状に形成したもので、内部には 排気が流通自在な隙間空間を有する。The cushioning material 10 is made by compressing a large number of fibers of ferritic stainless steel containing aluminum (for example, Fe-20Cr-5Al) as described in JP-A-57-71898, for example. As a result, it is formed in the shape of a metal scrubber, and has a clearance space inside which exhaust gas can freely flow.
【0019】 又、この様な緩衝材10は、そのまま上記内周面1aと外周面2aとの間に挟 持する他、ステンレス製フィラメントを編組して造られた金網にくるんだ状態で 、上記両周面1a、2aの間に挟持しても良い。更に、緩衝材10をくるんだ金 網を波形に加圧成形する事で、緩衝作用を向上させる事も出来る。In addition to sandwiching the cushioning material 10 between the inner peripheral surface 1a and the outer peripheral surface 2a as it is, the cushioning material 10 is wrapped in a wire mesh made by braiding stainless steel filaments, It may be sandwiched between both peripheral surfaces 1a, 2a. Further, the cushioning effect can be improved by press-molding a wire mesh wrapped with the cushioning material 10 into a corrugated shape.
【0020】 上述の様な緩衝材10は、上記ハニカム触媒担体2の全長に亙って設けると共 に、この緩衝材10の両端部を内方に向け折り曲げる事で、上記ハニカム触媒担 体2の両端部外周縁部を抑え付けている。The above-described cushioning material 10 is provided over the entire length of the honeycomb catalyst carrier 2, and both end portions of the cushioning material 10 are bent inward, so that the honeycomb catalyst carrier 2 is formed. The outer peripheral edges of both ends of the are held down.
【0021】 この様に、内方に向け折り曲げられた緩衝材10の両端部と、上記ケーシング 1の段部9、9との間には、図2〜3に示す様な抑えリング11、11を挟持し て、この緩衝材10を構成する金属繊維が、排気の流れによって飛散する事を防 止している。但し、各抑えリング11、11の一部で、排気入口6或は排気出口 7と対向する部分には、それぞれ複数個の切り欠き12、12を設けて、排気入 口6からケーシング1内に進入した排気の一部が、上記緩衝材10内に進入し、 更に緩衝材10の内側を通過した排気が排気出口7に達する様にしている。As described above, between the both ends of the cushioning material 10 bent inward and the stepped portions 9, 9 of the casing 1, there are retaining rings 11, 11 as shown in FIGS. The metal fibers constituting the cushioning material 10 are sandwiched between the metal fibers to prevent the metal fibers from being scattered by the flow of exhaust gas. However, a plurality of cutouts 12 and 12 are provided in a portion of each of the restraining rings 11 and 11 that faces the exhaust inlet 6 or the exhaust outlet 7 so that the exhaust inlet 6 and the casing 1 are connected to each other. A part of the exhaust gas that has entered the buffer material 10 is introduced, and the exhaust gas that has passed through the inside of the buffer material 10 reaches the exhaust outlet 7.
【0022】 尚、前記特開昭57−71898号公報に記載されたのと同様の方法により、 上記緩衝材10を構成する金属繊維の表面にウィスカを形成したり、更にこのウ ィスカに触媒を担持させる作業は、金属繊維を圧縮して緩衝材10とする以前に 行なっても、逆に以後に行なっても良い。By the same method as described in JP-A-57-71898, whiskers are formed on the surface of the metal fibers forming the cushioning material 10, and a catalyst is further added to the whiskers. The supporting operation may be performed before compressing the metal fibers to form the cushioning material 10, or conversely thereafter.
【0023】 上述の様に構成される本考案のハニカム触媒コンバータの排気浄化作用自体は 、前述した従来のハニカム触媒コンバータの場合と同様であり、有害物質を含む 排気を、排気入口6からケーシング1内に送り込み、更にこの排気を、ハニカム 触媒担体2を通過させてから、排気出口7より排出すれば、排気中の有害成分は 、ハニカム触媒担体2を通過する間に、このハニカム触媒担体2の表面に付着し た触媒の作用によって酸化、還元され、無害な物質に変化する。The exhaust gas purifying action of the honeycomb catalytic converter of the present invention configured as described above is the same as that of the conventional honeycomb catalytic converter described above, and exhaust gas containing harmful substances is exhausted from the exhaust inlet 6 to the casing 1. If the exhaust gas is sent into the inside of the honeycomb catalyst carrier 2 and then the exhaust gas is discharged from the exhaust outlet 7 after passing through the honeycomb catalyst carrier 2, the harmful components in the exhaust gas of the honeycomb catalyst carrier 2 are discharged while passing through the honeycomb catalyst carrier 2. Oxidized and reduced by the action of the catalyst adhering to the surface, and transformed into a harmless substance.
【0024】 特に、本考案のハニカム触媒コンバータの場合、排気入口6からケーシング1 内に進入した排気は、ハニカム触媒担体2を通過して排気出口7に送られるだけ でなく、上記ハニカム触媒担体2の外周面2aとケーシング1の保持部8の内周 面1aとの間の空間も流通する。そしてこの空間を流通する排気は、緩衝材10 を構成する多数の繊維の表面に担持された触媒と接触する事により無害化処理さ れてから、上記ケーシング1の後端部に設けた排気出口7より、ケーシング1外 に排出される。Particularly, in the case of the honeycomb catalytic converter of the present invention, the exhaust gas that has entered the casing 1 from the exhaust gas inlet 6 is not only sent to the exhaust gas outlet 7 through the honeycomb catalyst carrier 2, but also the honeycomb catalyst carrier 2 The space between the outer peripheral surface 2a and the inner peripheral surface 1a of the holding portion 8 of the casing 1 also circulates. The exhaust gas flowing through this space is detoxified by coming into contact with the catalyst carried on the surface of many fibers constituting the cushioning material 10, and then the exhaust outlet provided at the rear end portion of the casing 1. 7 is discharged to the outside of the casing 1.
【0025】 従って、前記従来構造の様に、不通気性のマット5(図4)を使用しなくても 、排気の一部が無害化処理されないまま排気出口7から送り出される事を防止出 来る。又、排気の流通面積が増加する分、ハニカム触媒コンバータの通気抵抗を 減少させて、エンジンの背圧を低下させ、エンジンの出力増大を図れる。Therefore, unlike the conventional structure, it is possible to prevent a part of the exhaust gas from being discharged from the exhaust gas outlet 7 without being detoxified without using the air-impermeable mat 5 (FIG. 4). . In addition, the ventilation area of the honeycomb catalytic converter can be reduced and the engine back pressure can be reduced to increase the output of the engine by the increase of the exhaust flow area.
【0026】[0026]
本考案のハニカム触媒コンバータは、以上に述べた通り構成され作用する為、 排気浄化性能が優れ、エンジンの性能を最大限に発揮させられるハニカム触媒コ ンバータを、安価に提供出来る。 Since the honeycomb catalytic converter of the present invention is constructed and operates as described above, it is possible to inexpensively provide a honeycomb catalytic converter that has excellent exhaust gas purification performance and can maximize engine performance.
【図1】本考案の実施例を示す断面図。FIG. 1 is a sectional view showing an embodiment of the present invention.
【図2】抑えリングの断面図。FIG. 2 is a sectional view of a retaining ring.
【図3】同じく斜視図。FIG. 3 is a perspective view of the same.
【図4】従来のハニカム触媒コンバータの1例を示す断
面図。FIG. 4 is a sectional view showing an example of a conventional honeycomb catalytic converter.
1 ケーシング 1a 内周面 2 ハニカム触媒担体 2a 外周面 3 緩衝材 4 緩衝材 5 マット 6 排気入口 7 排気出口 8 保持部 9 段部 10 緩衝材 11 抑えリング 12 切り欠き 1 casing 1a inner peripheral surface 2 honeycomb catalyst carrier 2a outer peripheral surface 3 cushioning material 4 cushioning material 5 mat 6 exhaust inlet 7 exhaust outlet 8 holding portion 9 step 10 cushioning material 11 restraining ring 12 notch
Claims (1)
入口を、後端部に排気出口を、それぞれ有するケーシン
グと、上記保持部の内側に支持されるハニカム触媒担体
と、このハニカム触媒担体の外周面と上記保持部の内周
面との間に挟持される緩衝材とから成るハニカム触媒コ
ンバータに於いて、上記緩衝材はフェライト系ステンレ
ス鋼繊維を多数、軽く圧縮して成るものであり、各繊維
の表面には微細なウィスカを多数形成しており、この多
数のウィスカによって、各繊維の表面に触媒が担持され
ている事を特徴とするハニカム触媒コンバータ。1. A casing having a tubular holding portion at an intermediate portion, an exhaust inlet at a front end portion, and an exhaust outlet at a rear end portion, and a honeycomb catalyst carrier supported inside the holding portion, In a honeycomb catalyst converter comprising a cushioning material sandwiched between an outer peripheral surface of a honeycomb catalyst carrier and an inner peripheral surface of the holding portion, the cushioning material is formed by lightly compressing a large number of ferritic stainless steel fibers. A honeycomb catalytic converter is characterized in that a large number of fine whiskers are formed on the surface of each fiber, and the catalyst is carried on the surface of each fiber by the large number of whiskers.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4679292U JPH063444U (en) | 1992-06-12 | 1992-06-12 | Honeycomb catalytic converter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4679292U JPH063444U (en) | 1992-06-12 | 1992-06-12 | Honeycomb catalytic converter |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH063444U true JPH063444U (en) | 1994-01-18 |
Family
ID=12757194
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4679292U Pending JPH063444U (en) | 1992-06-12 | 1992-06-12 | Honeycomb catalytic converter |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH063444U (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58130521U (en) * | 1982-02-26 | 1983-09-03 | 野口 賢三 | Skylight material for tile roofs |
JP2016160825A (en) * | 2015-03-02 | 2016-09-05 | イビデン株式会社 | Holding seal member, winding body and process of manufacture of holding seal member |
-
1992
- 1992-06-12 JP JP4679292U patent/JPH063444U/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58130521U (en) * | 1982-02-26 | 1983-09-03 | 野口 賢三 | Skylight material for tile roofs |
JP2016160825A (en) * | 2015-03-02 | 2016-09-05 | イビデン株式会社 | Holding seal member, winding body and process of manufacture of holding seal member |
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