JP2000303830A - Catalyst carrier holding member for automotive exhaust gas purification - Google Patents
Catalyst carrier holding member for automotive exhaust gas purificationInfo
- Publication number
- JP2000303830A JP2000303830A JP11150389A JP15038999A JP2000303830A JP 2000303830 A JP2000303830 A JP 2000303830A JP 11150389 A JP11150389 A JP 11150389A JP 15038999 A JP15038999 A JP 15038999A JP 2000303830 A JP2000303830 A JP 2000303830A
- Authority
- JP
- Japan
- Prior art keywords
- wire net
- peripheral surface
- exhaust gas
- ceramic support
- casing
- 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
- 239000003054 catalyst Substances 0.000 title claims abstract description 8
- 238000000746 purification Methods 0.000 title 1
- 239000000919 ceramic Substances 0.000 claims abstract description 21
- 239000000463 material Substances 0.000 claims abstract description 19
- 230000002093 peripheral effect Effects 0.000 claims abstract description 12
- 230000003647 oxidation Effects 0.000 claims abstract description 10
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 4
- 101100495256 Caenorhabditis elegans mat-3 gene Proteins 0.000 abstract description 2
- 229910000831 Steel Inorganic materials 0.000 abstract description 2
- 229910052742 iron Inorganic materials 0.000 abstract description 2
- 239000010959 steel Substances 0.000 abstract description 2
- 238000004140 cleaning Methods 0.000 abstract 1
- 238000010276 construction Methods 0.000 abstract 1
- 230000001133 acceleration Effects 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- 101100495270 Caenorhabditis elegans cdc-26 gene Proteins 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910001026 inconel Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000000630 rising effect Effects 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)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、セラミック担体を
用いた自動車用排気ガス浄化用の触媒担体保持部材に関
する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a catalyst carrier holding member for purifying automobile exhaust gas using a ceramic carrier.
【０００２】[0002]
【従来の技術】従来のセラミック触媒保持方法の代表例
を図２に示す。図に示す様にセラミック担体１０はシー
ルマット１１とワイヤーネット１２で、主に担体径方向
の振動やＧ（加速度）に対応した保持がされている。一
方、担体軸方向の振動やＧ（加速度）に対しては、主に
ニットメッシュをプレス成形したクッションリング１３
が保持するという構造がとられている。2. Description of the Related Art FIG. 2 shows a typical example of a conventional ceramic catalyst holding method. As shown in the figure, the ceramic carrier 10 is held by a seal mat 11 and a wire net 12 mainly corresponding to vibrations in the carrier radial direction and G (acceleration). On the other hand, against vibration and G (acceleration) in the axial direction of the carrier, the cushion ring 13 mainly formed by press-molding a knit mesh is used.
Is held.
【０００３】[0003]
【発明が解決しようとする課題】従来技術はクッション
リングを使用しているので担体の一部がニットメッシュ
製のリングによって覆われているため背圧の上昇と触媒
の効率が低下し、又、部品点数が多く、かつ組立工数が
かゝるためコスト高になるという問題点があった。In the prior art, a cushion ring is used, so that a part of the carrier is covered by a ring made of a knit mesh, so that the back pressure increases and the efficiency of the catalyst decreases. There is a problem that the number of parts is large and the number of assembly steps is large, resulting in high cost.
【０００４】[0004]
【課題を解決するための手段】本発明は上記問題点を解
決することを目的とし、円筒型のセラミック担体外周面
とケーシング内周面の環状空隙内にシールマットとワイ
ヤーネットを軸方向に順次配設し、ワイヤーネットの端
部をセラミック担体の端面に回り込ませて担体を軸方向
で保持し、上記ワイヤーネットをＦＣＡＭ材等の耐高温
酸化性に優れ、低コスト材で形成したことを特徴とす
る。SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned problems, and a seal mat and a wire net are sequentially disposed in an annular space between an outer peripheral surface of a cylindrical ceramic carrier and an inner peripheral surface of a casing in an axial direction. Arranged, the end of the wire net is wrapped around the end face of the ceramic carrier to hold the carrier in the axial direction, and the wire net is made of FCAM material and other high-temperature oxidation-resistant, low-cost materials. And
【０００５】[0005]
【発明の実施の形態】本発明の実施の形態を図１に示し
た実施例に基づいて詳細に説明する。円筒状のセラミッ
ク担体１を円筒状ケーシング２内に装着し、ケーシング
２内周面とセラミック担体１外周間の環状空隙内にシー
ルマット３とワイヤーネット４を軸方向に順次配設し、
ワイヤーネット４の端部４ａをセラミック担体１の後面
に回り込ませ、上記ワイヤーネットをＦＣＡＭ材等の耐
高温酸化性に優れた低コスト材で形成している。担体回
り込ませ部分４ａの出っ張り代は５ｍｍ〜９ｍｍが適切
である。又、出っ張り部のネット部を折り返して２重に
使用してもよい。DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail based on the embodiment shown in FIG. A cylindrical ceramic carrier 1 is mounted in a cylindrical casing 2, and a seal mat 3 and a wire net 4 are sequentially arranged in an axial direction in an annular gap between the inner peripheral surface of the casing 2 and the outer periphery of the ceramic carrier 1,
The end 4a of the wire net 4 is wrapped around the rear surface of the ceramic carrier 1, and the wire net is formed of a low-cost material excellent in high-temperature oxidation resistance such as FCAM material. The protrusion margin of the carrier wrapping portion 4a is suitably 5 mm to 9 mm. Also, the net portion of the protruding portion may be folded back to be used twice.
【０００６】次に作用について説明する。セラミック担
体１内を通過する排気ガスによりワイヤーネットの担体
端面に回り込ませた部分４ａは常に高温にさらされるこ
とになるが、ＦＣＡＭ材等の耐高温酸化性に優れる低コ
スト材で形成しているので線材の劣化は防止される。Ｆ
ＣＡＭ材とは表１に示すように鉄を主成分とした耐熱鋼
で、Ｆｅ−Ｃｒ−Ａｌ−Ｍｏ材の略称で、Ｍｏ，Ａｌ及
びＳｉの添加量を最適化することにより素線表面に連続
したＡｌ２Ｏ３の保護性皮膜を形成させたもので、高温
度域での耐酸化特性の向上を図ったもの。従来、高温度
領域で有効と言われるインコネル６０１などの耐熱合金
に対しても高温酸化特性では同等以上の性能を示す。従
って、回り込ませた部分は高温酸化による劣化を受ける
ことなく、本来のクッション材の働きをはたすことがで
きる。Next, the operation will be described. The portion 4a of the wire net wrapped around the end face of the wire net by the exhaust gas passing through the ceramic carrier 1 is always exposed to a high temperature, but is formed of a low cost material excellent in high temperature oxidation resistance such as FCAM material. Therefore, deterioration of the wire is prevented. F
The CAM material is a heat-resistant steel containing iron as a main component as shown in Table 1, and is an abbreviation of Fe-Cr-Al-Mo material. By optimizing the amounts of Mo, Al and Si added to the surface of the strand, A continuous protective film of Al 2 O 3 is formed to improve the oxidation resistance in a high temperature range. Conventionally, even high-temperature alloys such as Inconel 601 which are said to be effective in a high-temperature region exhibit the same or better performance in high-temperature oxidation characteristics. Therefore, the wrapped portion can function as the original cushion material without being deteriorated by high-temperature oxidation.
【表１】 [Table 1]
【０００７】[0007]
【発明の効果】本発明は、円筒型のセラミック担体外周
面とケーシング内周面の環状空隙内にシールマットとワ
イヤーネットを軸方向に順次配設し、ワイヤーネットの
端部をセラミック担体の端面に回り込ませて担体を軸方
向で保持し、上記ワイヤーネットをＦＣＡＭ材等の耐高
温酸化性に優れ、低コスト材で形成しているので、従来
のようなニットメッシュをプレス成形したクッションリ
ングを不要とし、又、ワイヤーネットをＦＣＡＭ材等の
耐高温酸化性に優れた低コスト材で形成しているので、
部品点数が少なくなりコストダウンを計ることができ、
組み付け作業も容易となるという効果を有する。また、
クッションリングを廃止することによって、背圧の上昇
を押えることができ、触媒の有効断面積の減少を回避す
る利点をもつ。本構造を採用することによって、担体保
持荷重を設計目標値の１０倍以上に設定ができ、使用温
度での初期性能を満足することができた。According to the present invention, a seal mat and a wire net are sequentially disposed in an annular space between an outer peripheral surface of a cylindrical ceramic carrier and an inner peripheral surface of a casing in an axial direction, and an end of the wire net is attached to an end surface of the ceramic carrier. And the carrier is held in the axial direction, and the wire net is made of a low-cost material with excellent high-temperature oxidation resistance such as FCAM material. It is unnecessary and the wire net is made of low cost material with excellent high temperature oxidation resistance such as FCAM material.
The number of parts is reduced and the cost can be reduced.
This has the effect that the assembling work is also facilitated. Also,
By eliminating the cushion ring, the back pressure can be suppressed from rising, and there is an advantage that the effective cross-sectional area of the catalyst is prevented from decreasing. By adopting this structure, the carrier holding load can be set to 10 times or more of the design target value, and the initial performance at the operating temperature can be satisfied.
【図１】本発明の一実施例で、セラミック担体外周部の
正断面図である。FIG. 1 is a front sectional view of an outer peripheral portion of a ceramic carrier according to an embodiment of the present invention.
【図２】従来品のセラミック担体外周の正断面図であ
る。FIG. 2 is a front sectional view of the outer periphery of a conventional ceramic carrier.
１ セラミック担体 ２ ケーシング ３ シールマット ４ ワイヤーネット ４ａ ワイヤーネット端部の担体回り込ませ部分 DESCRIPTION OF SYMBOLS 1 Ceramic support 2 Casing 3 Seal mat 4 Wire net 4a Carrier wrap part of wire net end
Claims (2)
ング内周面の環状空隙内にシールマットとワイヤーネッ
トを軸方向に順次配設し、ワイヤーネットの端部をセラ
ミック担体の端面に回り込ませて担体を軸方向で保持し
た自動車用排気ガス浄化用の触媒担体保持部材。1. A seal mat and a wire net are sequentially disposed in an annular space between an outer peripheral surface of a cylindrical ceramic carrier and an inner peripheral surface of a casing in an axial direction, and an end of the wire net is wrapped around an end surface of the ceramic carrier. A catalyst carrier holding member for purifying automobile exhaust gas, the carrier being held in an axial direction.
高温酸化性に優れ、低コスト材で形成した請求項１に記
載の自動車用排気ガス浄化用の触媒担体保持部材2. The catalyst carrier holding member for purifying exhaust gas for automobiles according to claim 1, wherein said wire net is formed of a low-cost material excellent in high-temperature oxidation resistance such as FCAM material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11150389A JP2000303830A (en) | 1999-04-20 | 1999-04-20 | Catalyst carrier holding member for automotive exhaust gas purification |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11150389A JP2000303830A (en) | 1999-04-20 | 1999-04-20 | Catalyst carrier holding member for automotive exhaust gas purification |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000303830A true JP2000303830A (en) | 2000-10-31 |
Family
ID=15495934
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11150389A Pending JP2000303830A (en) | 1999-04-20 | 1999-04-20 | Catalyst carrier holding member for automotive exhaust gas purification |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000303830A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100335758C (en) * | 2002-09-30 | 2007-09-05 | 霓佳斯株式会社 | Supporting material for catalytic converter |
-
1999
- 1999-04-20 JP JP11150389A patent/JP2000303830A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100335758C (en) * | 2002-09-30 | 2007-09-05 | 霓佳斯株式会社 | Supporting material for catalytic converter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20060228 |
|
| RD02 | Notification of acceptance of power of attorney |
Free format text: JAPANESE INTERMEDIATE CODE: A7422 Effective date: 20060317 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20090113 |
|
| A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20090602 |