JPS6139490B2 - - Google Patents
Info
- Publication number
- JPS6139490B2 JPS6139490B2 JP56147556A JP14755681A JPS6139490B2 JP S6139490 B2 JPS6139490 B2 JP S6139490B2 JP 56147556 A JP56147556 A JP 56147556A JP 14755681 A JP14755681 A JP 14755681A JP S6139490 B2 JPS6139490 B2 JP S6139490B2
- Authority
- JP
- Japan
- Prior art keywords
- catalyst
- monolithic
- inner case
- monolithic catalyst
- container
- 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.)
- Expired
Links
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
- F01N3/2853—Arrangements for mounting catalyst support in housing, e.g. with means for compensating thermal expansion or vibration using mats or gaskets between catalyst body and housing
-
- 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
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features
- F01N13/18—Construction facilitating manufacture, assembly, or disassembly
-
- 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
- F01N2260/00—Exhaust treating devices having provisions not otherwise provided for
- F01N2260/08—Exhaust treating devices having provisions not otherwise provided for for preventing heat loss or temperature drop, using other means than layers of heat-insulating material
-
- 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
- F01N2330/06—Ceramic, e.g. monoliths
-
- 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
- F01N2450/00—Methods or apparatus for fitting, inserting or repairing different elements
- F01N2450/24—Methods or apparatus for fitting, inserting or repairing different elements by bolts, screws, rivets or the like
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)
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装置におけ
るモノリス触媒の保持構造に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a holding structure for a monolithic catalyst in an exhaust gas purification device for an internal combustion engine.
（従来の技術）
従来、排気ガス浄化用のモノリス触媒は、一般
に第１図に示すように、モノリス触媒１の排気ガ
ス流れ方向上流側には、リテーナ２、クツシヨン
３、シム４等が配設され、また、下流側には、ク
ツシヨン３が配設されて排気ガス流れ方向の保持
がなされている。そして、モノリス触媒１の外周
側には、排気ガスがモノリス触媒１と触媒容器５
との間を抜けて通過するのを防止しているインタ
ラム６（熱発泡性シール材）、モノリス触媒１と
触媒容器５との熱膨張差および振動等によるがた
つきを吸収しているワイヤネツト７がそれぞれ配
設されてモノリス触媒１の外周側の保持をしてい
る。(Prior Art) Conventionally, as shown in FIG. 1, in a monolithic catalyst for exhaust gas purification, a retainer 2, a cushion 3, a shim 4, etc. are arranged on the upstream side of the monolithic catalyst 1 in the exhaust gas flow direction. Further, a cushion 3 is provided on the downstream side to maintain the flow direction of the exhaust gas. Then, exhaust gas is distributed between the monolith catalyst 1 and the catalyst container 5 on the outer peripheral side of the monolith catalyst 1.
An interram 6 (thermally foamable sealing material) prevents the catalyst from passing between the monolith catalyst 1 and the catalyst container 5, and a wire net 7 that absorbs the difference in thermal expansion between the monolith catalyst 1 and the catalyst container 5 and rattling due to vibrations, etc. are respectively arranged to hold the outer peripheral side of the monolithic catalyst 1.
しかし、この従来のモノリス触媒保持構造にお
いては、触媒容器にモノリス触媒を収容する際、
予め触媒容器に収容してあるワイヤネツトをつぶ
しながら圧入するので、モノリス触媒が斜めにな
つたり、割れたりする問題点がある。また、ガス
シールとして用いているインタラムは高価である
という問題点もあり、さらには、部品点数が多い
という問題点もある。 However, in this conventional monolithic catalyst holding structure, when housing the monolithic catalyst in the catalyst container,
Since the wire net previously stored in the catalyst container is pressed and inserted while being crushed, there is a problem that the monolith catalyst may become slanted or cracked. Further, there is a problem that the interlum used as a gas seal is expensive, and furthermore, there is a problem that there are a large number of parts.
上記問題を解決するため、従来、例えば、実開
昭54−82215号公報には、円筒状モノリス担体の
外周面に環状の溝を形成し、該溝に弾性材を介し
て板金製ホルダの筒部に形成された凸部を嵌合
し、前記ホルダのつば部を分割式触媒ケースの合
せ面間に挟持することにより、モノリス担体を前
記触媒ケース内に支持するようにした保持構造
が、あるいは実公昭55−28817号公報には、外筒
にハニカム触媒を収納すると共に内筒を収納し、
該触媒の両端を外筒と内筒に形成した内曲げ部に
より保持するようにした保持構造が開示されてい
る。 In order to solve the above problem, conventionally, for example, in Japanese Utility Model Application Publication No. 54-82215, an annular groove is formed on the outer circumferential surface of a cylindrical monolithic carrier, and an elastic material is inserted into the groove to form a cylinder of a sheet metal holder. A holding structure is provided in which the monolithic carrier is supported within the catalyst case by fitting the convex portion formed in the part and sandwiching the collar part of the holder between the mating surfaces of the split catalyst case, or In Japanese Utility Model Publication No. 55-28817, a honeycomb catalyst is housed in an outer cylinder and an inner cylinder is housed,
A holding structure is disclosed in which both ends of the catalyst are held by internally bent portions formed in an outer cylinder and an inner cylinder.
（発明が解決しようとする問題点）
しかしながら、上記の開示されたものは、共通
して、別途成形した触媒を筒状のケースに入れて
サブアツセンブリ体を得るようにしており、この
ような構成であると、前記サブアツセンブリ体を
得る工程において、圧入、嵌合等の面倒な組付け
作業を必要とするばかりか、この組付けに際して
モノリス触媒を損傷させてしまう慮れが生じる。(Problems to be Solved by the Invention) However, in the above-disclosed devices, a separately molded catalyst is placed in a cylindrical case to obtain a subassembly. If this is the case, not only will the step of obtaining the subassembly require troublesome assembly operations such as press-fitting and fitting, but also there is a possibility that the monolithic catalyst will be damaged during this assembly.
本発明は、上記問題点に鑑みてなされたもので
あり、モノリス触媒の圧入、嵌合作業をなくし
て、触媒容器５へのモノリス触媒の収容が簡単に
果せ、さらにはモノリス触媒の安定的保持を図つ
たモノリス触媒保持構造を提供することを目的と
している。 The present invention has been made in view of the above-mentioned problems, and eliminates the press-fitting and fitting work of the monolithic catalyst to easily accommodate the monolithic catalyst in the catalyst container 5. Furthermore, the monolithic catalyst can be stably stored. The purpose of this invention is to provide a monolithic catalyst holding structure that is capable of holding a monolithic catalyst.
（問題点を解決するための手段）
このため、本発明のモノリス触媒保持構造は、
上流側端部にフランジ部を形成すると共に下流側
端部に触媒容器の斜面に対応するテーパ面を形成
し且つ内周壁に凸条部および凹溝部の少なくとも
いずれか一方を形成してなる筒状のインナケース
を備え、該インナケース内に予めモノリス触媒を
一体成形および焼成しておくことにより、該イン
ナケースを介してモノリス触媒を前記触媒容器に
収容保持したことを特徴としている。(Means for solving the problem) Therefore, the monolithic catalyst holding structure of the present invention
A cylindrical shape having a flange formed at the upstream end, a tapered surface corresponding to the slope of the catalyst container at the downstream end, and at least one of a convex strip and a concave groove formed on the inner circumferential wall. The present invention is characterized in that the monolithic catalyst is housed and held in the catalyst container via the inner case by integrally molding and firing the monolithic catalyst in the inner case in advance.
（作用）
そして上記のように構成したモノリス触媒の保
持構造により、触媒容器にインナケースを取付け
るだけでモノリス触媒の保持が完了し、圧入、嵌
合等の危険な取付け作業が不要となり、また凹凸
形状とテーパ面がモノリス触媒の縦方向移動およ
び横振れを防止して、該モノリス触媒の安定した
保持状態を維持する。(Function) With the monolithic catalyst holding structure configured as described above, the monolithic catalyst can be held by simply attaching the inner case to the catalyst container, eliminating the need for dangerous installation work such as press-fitting or fitting, The shape and tapered surface prevent vertical movement and lateral vibration of the monolithic catalyst, thereby maintaining a stable holding state of the monolithic catalyst.
（実施例）
以下、本発明の実施例を第２図に基づいて説明
する。(Example) Hereinafter, an example of the present invention will be described based on FIG. 2.
第２図において、１１はモノリス触媒で、予め
筒状のステンレス鋼製のインナケース１２内に一
体成形および焼成されて収容されている。インナ
ケース１２は排気ガス流れの上流側となる一端に
フランジ部１２ａを有すると共に下流側の他端に
は触媒容器１３の斜面に対応するテーパ面１２ｂ
を有し、さらには、内周壁には凸条部１２ｃ、凹
溝部１２ｄを備えている。１４はフランジ部１２
ａを覆うガスケツトである。なお、１５はエキゾ
ーストマニホルド、１６はボルト、１７はナツト
をそれぞれ示している。 In FIG. 2, reference numeral 11 denotes a monolithic catalyst, which is previously integrally molded and fired in a cylindrical inner case 12 made of stainless steel and housed therein. The inner case 12 has a flange portion 12a at one end on the upstream side of the exhaust gas flow, and a tapered surface 12b corresponding to the slope of the catalyst container 13 at the other downstream end.
Furthermore, the inner circumferential wall is provided with a protruding strip 12c and a concave groove 12d. 14 is the flange portion 12
This is a gasket that covers a. Note that 15 indicates an exhaust manifold, 16 indicates a bolt, and 17 indicates a nut.
フランジ部１２ａは触媒容器１３の上流側端縁
の段差部に位置し、これにより、モノリス触媒１
はインナケース１２を介して触媒容器１３に取付
けられる。また、テーパ面１２ｃはモノリス触媒
１１がインナケース１２と共に横方向に振れるの
を防止している。また、凸条部１２ｃ、凹溝部１
２ｄは共にモノリス触媒１１がインナケース１２
内で上下に移動するのを防止している。この凸条
部１２ｃ、凹溝部１２ｄは本実施例の如く１個づ
つ設けることに限るものではなく、凸条部のみ、
あるいは凹溝部のみ、さらには両者の組合せで、
それぞれ適宜数設けてもよいものである。 The flange portion 12a is located at a stepped portion on the upstream edge of the catalyst container 13, and thereby the monolithic catalyst 1
is attached to the catalyst container 13 via the inner case 12. Further, the tapered surface 12c prevents the monolithic catalyst 11 from swinging laterally together with the inner case 12. In addition, the protruding portion 12c and the concave groove portion 1
2d both have a monolith catalyst 11 and an inner case 12.
This prevents it from moving up and down inside. The protruding portion 12c and the concave groove portion 12d are not limited to providing one each as in this embodiment, but only the protruding portions,
Or just the concave groove, or even a combination of both.
An appropriate number of each may be provided.
なお、インナケース１２にモノリス触媒１１を
一体成形した後の焼成に際し、モノリス触媒の収
縮によつて両者の間に隙間が生じ、あるいは使用
中に熱膨張差によつて両者の間に隙間が生じる
が、凸条部および凹溝部による係合により、相対
移動は最小限に抑えられる。 Note that during firing after the monolithic catalyst 11 is integrally molded into the inner case 12, a gap is created between the two due to contraction of the monolithic catalyst, or a gap is created between the two due to the difference in thermal expansion during use. However, the relative movement is minimized due to the engagement by the protrusions and grooves.
（発明の効果）
以上述べた如き本発明によれば、触媒容器への
モノリス触媒の収容が、モノリス触媒の破損など
が全く無く且つ極めて容易に果せ、また凸条部お
よび凹溝部により、モノリス触媒の縦方向移動お
よび横揺れが最小限に抑えられ、使用中における
モノリス触媒の安定的保持が可能になる。(Effects of the Invention) According to the present invention as described above, the monolithic catalyst can be housed in the catalyst container very easily without any damage to the monolithic catalyst, and the protruding stripes and the grooves allow the monolithic catalyst to be accommodated in the catalyst container. Vertical movement and rolling of the catalyst are minimized, allowing stable retention of the monolithic catalyst during use.
第１図は従来のモノリス触媒の保持構造を示す
断面図、第２図は本発明に係る一実施例を示す断
面図である。
１，１１……モノリス触媒、５，１３……触媒
容器、１２……インナケース、１２ａ……フラン
ジ部、１２ｂ……テーパ面、１２ｃ……凸条部、
１２ｄ……凹溝部。
FIG. 1 is a sectional view showing a conventional monolithic catalyst holding structure, and FIG. 2 is a sectional view showing an embodiment of the present invention. 1, 11... Monolith catalyst, 5, 13... Catalyst container, 12... Inner case, 12a... Flange portion, 12b... Tapered surface, 12c... Convex portion,
12d...Concave groove part.
Claims (1)
部を形成すると共に下流側となる他端に触媒容器
の斜面に対応するテーパ面を形成し、且つ、内周
壁に凸条部および凹溝部の少なくともいずれか一
方を形成してなる筒状のインナケースを備え、該
インナケース内に予めモノリス触媒を一体成形お
よび焼成しておくことにより、該インナケースを
介してモノリス触媒を前記触媒容器に収容保持し
たことを特徴とするモノリス触媒保持構造。1. A flange portion is formed at one end on the upstream side of the exhaust gas flow, and a tapered surface corresponding to the slope of the catalyst container is formed on the other end on the downstream side, and at least a convex portion and a concave groove portion are formed on the inner peripheral wall. A cylindrical inner case formed of one of the two is provided, and by integrally molding and firing a monolith catalyst in the inner case in advance, the monolith catalyst is accommodated and held in the catalyst container via the inner case. A monolithic catalyst holding structure characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14755681A JPS5851211A (en) | 1981-09-18 | 1981-09-18 | Holding structure for monolithic catalyst |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14755681A JPS5851211A (en) | 1981-09-18 | 1981-09-18 | Holding structure for monolithic catalyst |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5851211A JPS5851211A (en) | 1983-03-25 |
| JPS6139490B2 true JPS6139490B2 (en) | 1986-09-04 |
Family
ID=15433002
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14755681A Granted JPS5851211A (en) | 1981-09-18 | 1981-09-18 | Holding structure for monolithic catalyst |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5851211A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4911933B2 (en) | 2005-08-31 | 2012-04-04 | サーパス工業株式会社 | Pressure gauge and pressure gauge assembly |
| GB2557248B (en) * | 2016-12-01 | 2019-06-12 | Perkins Engines Co Ltd | Mounting interface for exhaust gas treatment assembly |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5482215U (en) * | 1977-11-21 | 1979-06-11 | ||
| JPS5528817U (en) * | 1978-08-11 | 1980-02-25 |
-
1981
- 1981-09-18 JP JP14755681A patent/JPS5851211A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5851211A (en) | 1983-03-25 |
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