JPS5851211A - Holding structure for monolithic catalyst - Google Patents

Holding structure for monolithic catalyst

Info

Publication number
JPS5851211A
JPS5851211A JP14755681A JP14755681A JPS5851211A JP S5851211 A JPS5851211 A JP S5851211A JP 14755681 A JP14755681 A JP 14755681A JP 14755681 A JP14755681 A JP 14755681A JP S5851211 A JPS5851211 A JP S5851211A
Authority
JP
Japan
Prior art keywords
container
monolithic catalyst
catalyst
inner case
case
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.)
Granted
Application number
JP14755681A
Other languages
Japanese (ja)
Other versions
JPS6139490B2 (en
Inventor
Kiyoshi Isotani
磯谷　精
Naka Takita
滝田　仲
Itsuo Koga
古賀　逸夫
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toyota Motor Corp
Original Assignee
Toyota Motor Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toyota Motor Corp filed Critical Toyota Motor Corp
Priority to JP14755681A priority Critical patent/JPS5851211A/en
Publication of JPS5851211A publication Critical patent/JPS5851211A/en
Publication of JPS6139490B2 publication Critical patent/JPS6139490B2/ja
Granted legal-status Critical Current

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 ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • 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)

Abstract

PURPOSE:To reduce the number of parts and to simply contain a monolithic catalyst in a catalyzer container by forming a projection and/or recess on the inner peripheral wall of an inner case having a tapered surface corresponding to the lower oblique surface of the container. CONSTITUTION:An exhaust gas purifier is constructed to contain an inner case 12 and a monolith catalyzer 11 disposed in the inner case in a catalyst container 13 which is clamped with a bolt 16 and a nut 17 at the downstream side of an exhaust gas manifold 15. In this case, the cylindrical inner case 12 which contains the catalyzer 11 formed and baked in advance in the prescribed shape is formed with a flange 12a at one end of the upstream side, is mounted on the container 13, and is formed with a tapered surface 12b along the oblique surface of the container 13 at the downstream side end. A projection 12c and a recess groove 12d are formed on the inner peripheral wall of the case 12, thereby forming a structure for preventing the catalyzer 11 from moving elevationally in the case 12.

Description

【発明の詳細な説明】 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 The present invention relates to a structure for holding a monolithic catalyst in an exhaust gas purification device for an internal combustion engine.

従来、排気ガス浄化用のモノリス触媒は、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、クッション３、シム４等が配設され、ま
た、下流側には、クッション３が配設されて排気ノｆ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、排気ガスが七ノψｌ容器５との間を抜
けて通過下るのを防止（２ているインクラム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
差および撮動等によるがたつきを吸収しているワイヤネ
ット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。Conventionally, in a monolithic catalyst for exhaust gas purification, as shown in FIG. 1, 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, and on the downstream side A cushion 3 is provided to maintain the flow direction of the exhaust gas. On the outer circumferential side of the monolithic catalyst 1, there is an inkram 6 (thermally foamable sealing material) that prevents the exhaust gas from passing through the space between the monolithic catalyst 1 and the catalyst container 5. Wire nets 7 that absorb the difference in thermal expansion between the monolithic catalyst 1 and the monolithic catalyst 1 and the rattling due to photographing, etc. are 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
収容しであるワイヤネットをつふしながら圧入１−るの
で、モノリス触媒が斜めになったり、割れたりする問題
点がある。However, in this conventional monolithic catalyst holding structure,
When a monolithic catalyst is placed in a catalyst container, the wire net that is previously placed in the catalyst container is closed and press-fitted, so there is a problem that the monolithic catalyst may become slanted or cracked.

また、カスシールとして用いているインクラムは高価で
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。Further, there is a problem that the inkram used as the casseal is expensive, and furthermore, there is a problem that there are a large number of parts.

不発明は、上記問題点に鑑みてなされたものであり、触
媒容器へのモノリス触媒の収容が而単に果せ、ガスシー
ルにおいてはインクラムを使用しない構造どし、さらに
は、部品点数の大幅な減少を図っ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 invention was made in view of the above-mentioned problems, and it is possible to easily accommodate the monolithic catalyst in the catalyst container, and to create a structure that does not use an ink-ram in the gas seal, and furthermore, to create a structure with a large number of parts. The purpose is to provide a monolithic catalyst holding structure that reduces the amount of carbon used.

このため、本発明のモノリス触娠保持イ再造は、下流側
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（ニー
条部および四有部の少なくともいずれか一万を形成して
なる油状のインナケースにて、該インナケースの内部形
状に適合する形状に成形および焼成されてなるモノリス
触媒を収容保持したことを特徴としている。For this reason, in the reconstruction of the monolith tactile retainer of the present invention, a flange portion is formed at the downstream end, a tapered surface corresponding to the slope of the catalyst container is formed at the downstream end, and the inner peripheral wall (knee strip portion and The present invention is characterized in that a monolithic catalyst formed by molding and firing into a shape that matches the internal shape of the inner case is housed in an oily inner case formed of at least one of four parts.

以下、本発明の一実施例を第２図に基づいて説明する。Hereinafter, one embodiment of the present invention will be described based on FIG. 2.

第２図において、］１はモノリス触媒で、予め筒状のイ
ンナケース１２にその内部形状に適合する形状に成形お
よび焼成されて収容されている。インナケース１２−排
気ガス流れの上流側となる一端に７ランジ都１２ａを有
すると共に下流側の他端には触に容器１３のが１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１２Ｃ１凹溝部１２ｄを（Ｉｔｆｊえている。１４
はフランジ部１２ａを稜うガスヶ・ソトである。Ｚｒお
、１５はエキソ−ストマニホルド、１６はボルト、１７
はす・ソトをそれぞれ示１．ている。In FIG. 2, reference numeral 1 denotes a monolithic catalyst, which is previously molded and fired into a shape that matches the internal shape of the cylindrical inner case 12 and housed therein. Inner case 12 - has seven lunges 12a at one end on the upstream side of the exhaust gas flow, and has a tapered surface 12b at the other end on the downstream side, which corresponds to one surface of the container 13; The peripheral wall has a protruding strip 12C1 and a concave groove 12d.
is a gas hole extending over the flange portion 12a. Zr, 15 is the exhaust manifold, 16 is the bolt, 17
Show lotus and soto respectively 1. ing.

フランジ部１２ａは触媒容器１３の」−流１１ｉ１１端
縁の段差ｔ８１−に位置し、これ（二より、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］２Ｃはモノリス触媒】】がイ
ンナケース１２と共に４ん方間に振れるのを防止してい
る。また、凸条部］２ｃ、凹溝部１２１１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。The flange portion 12a is located at the step t81 at the edge of the catalyst container 13 (from the second point, the monolithic catalyst 1 is attached to the catalyst container 13 via the inner case 12. Also, the tapered surface) 2C prevents the monolithic catalyst 11 from swinging in all directions together with the inner case 12. Also, the protruding stripes 2c and the grooves 1211 prevent the monolithic catalyst 11 from moving up and down within the inner case 12. is prevented.

この凸条部１２Ｃ５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
いは四存ｆ部のみ、さらに１−．１両二各の組合せで、
それぞれ適宜数設けてもよいものである。The protruding portions 12C5 and the concave groove portions 12d are not limited to being provided one each as in this embodiment, but may be provided only on the protruding portions, or only on the four portions f, and furthermore, 1-. With each combination of 1 car and 2 cars,
An appropriate number of each may be provided.

以上述べた如き本発つ］によれは、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＜　ｈ゛
（＜且つ極めて容易に呆せ、インタラム、り゛ソション
、ワイヤネ゛ソト笠の高価な部品を使用よることなくイ
ンナケースのみでモノリス触媒を保持できるので、大幅
なコストダウンと部品点数の削減が果せ、さらには、イ
ンナケースのフランジ部の内側には、モノリス触媒保持
用の何等の部品も食み出さないので、モノリス触媒の排
気ガス通過面積が大きく取れ、モノリス触媒の性能同上
も果せるモノリス触媒保持構造か提供できる。According to the present invention as described above, the monolithic catalyst is housed in the catalyst container, and damage to the monolithic catalyst is extremely easy. Since the monolithic catalyst can be held only in the inner case without using expensive parts, the cost can be significantly reduced and the number of parts can be reduced.Furthermore, the inside of the flange part of the inner case is designed to hold the monolithic catalyst. Since no parts of the monolithic catalyst protrude, a large exhaust gas passage area of the monolithic catalyst can be obtained, and a monolithic catalyst holding structure can be provided that can achieve the same performance as the monolithic catalyst.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は従来のモノリス触媒の保持構造を示す…［面図
、第２図は本発明に係る一実施例を示す…１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１
２ｂ・・・テーパ面　１２Ｃ・・・凸条部　１２ｄ・・
・凹溝部特許出願人　　　トヨタ自動車工業株式会社代
　理　人　弁理士萼　優美（番肋１１名）５− 才ｌπFIG. 1 is a front view showing a conventional monolithic catalyst holding structure, and FIG. 2 is a front view showing an embodiment of the present invention. 1.11... Monolithic catalyst 5, 13... Catalyst container 12... Inner case 12a... Flange portion 1
2b...Tapered surface 12C...Convex portion 12d...
・Patent applicant: Toyota Motor Corporation Representative: Patent attorney Yumi Sakai (11 members) 5- Sailπ

Claims (1)

【特許請求の範囲】[Claims] （１）排気ガス流れの上流側となる一端にフランジ部を
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？＃部の少なくともいずれか一方を形成してなる筒状
のインナケースにて、該インナケースの内部形状に適合
する形状に成形および焼成されてなるモノリス触媒を収
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 the inner peripheral wall is provided with a convex portion and a concave portion. A monolithic catalyst characterized in that a cylindrical inner case formed by forming at least one of the # parts accommodates and holds a monolithic catalyst formed and fired into a shape that matches the internal shape of the inner case. holding structure.
JP14755681A 1981-09-18 1981-09-18 Holding structure for monolithic catalyst Granted JPS5851211A (en)

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 true JPS5851211A (en) 1983-03-25
JPS6139490B2 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)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8037769B2 (en) 2005-08-31 2011-10-18 Surpass Industry Co., Ltd Pressure gauge and pressure gauge assembly
GB2557248A (en) * 2016-12-01 2018-06-20 Perkins Engines Co Ltd Mounting interface for exhaust gas treatment assembly

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5482215U (en) * 1977-11-21 1979-06-11
JPS5528817U (en) * 1978-08-11 1980-02-25

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5482215U (en) * 1977-11-21 1979-06-11
JPS5528817U (en) * 1978-08-11 1980-02-25

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8037769B2 (en) 2005-08-31 2011-10-18 Surpass Industry Co., Ltd Pressure gauge and pressure gauge assembly
GB2557248A (en) * 2016-12-01 2018-06-20 Perkins Engines Co Ltd Mounting interface for exhaust gas treatment assembly
GB2557248B (en) * 2016-12-01 2019-06-12 Perkins Engines Co Ltd Mounting interface for exhaust gas treatment assembly
US10422268B2 (en) 2016-12-01 2019-09-24 Perkins Engines Company Limited Mounting interface for exhaust gas treatment assembly

Also Published As

Publication number Publication date
JPS6139490B2 (en) 1986-09-04

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