JPS58107811A - Monolith catalyst holder - Google Patents
Monolith catalyst holderInfo
- Publication number
- JPS58107811A JPS58107811A JP20669781A JP20669781A JPS58107811A JP S58107811 A JPS58107811 A JP S58107811A JP 20669781 A JP20669781 A JP 20669781A JP 20669781 A JP20669781 A JP 20669781A JP S58107811 A JPS58107811 A JP S58107811A
- Authority
- JP
- Japan
- Prior art keywords
- edge
- flange
- converter case
- exhaust manifold
- gas
- 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
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
- 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
- F01N3/2867—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 the mats or gaskets being placed at the front or end face of catalyst body
-
- 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
- F01N3/2882—Catalytic reactors combined or associated with other devices, e.g. exhaust silencers or other exhaust purification devices
-
- 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
- F01N13/08—Other arrangements or adaptations of exhaust conduits
- F01N13/10—Other arrangements or adaptations of exhaust conduits of exhaust manifolds
-
- 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
- F01N2350/00—Arrangements for fitting catalyst support or particle filter element in the housing
- F01N2350/02—Fitting ceramic monoliths in a metallic housing
- F01N2350/06—Fitting ceramic monoliths in a metallic housing with means preventing gas flow by-pass or leakage
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
Description
【発明の詳細な説明】
本発明は、自動車等の車輌のエンジンに用いられる排気
ガス浄化用触媒コンバータに係り、更に詳細には排気ガ
ス浄化用触媒コンバータに於けるモノリス触媒の保持装
置に係る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a catalytic converter for exhaust gas purification used in the engine of a vehicle such as an automobile, and more particularly to a holding device for a monolithic catalyst in a catalytic converter for exhaust gas purification.
エンジンより排出される排気ガス中の有害成分を浄化す
る一つの装置として、触媒コンバータがよく知られてい
る。排気ガス浄化用触媒コンバータは触媒が有効な触媒
作用を賽して良好な排気ガス浄化作用を発揮するために
は触媒をその活性濃度以上に加熱される必要があり、こ
の加熱は、一般にエンジンより排出されて排気ガス浄化
用触媒コンバータを通過する排気ガスにより行われてい
る。A catalytic converter is well known as a device for purifying harmful components in exhaust gas emitted from an engine. In a catalytic converter for exhaust gas purification, in order for the catalyst to perform its effective catalytic action and exhibit a good exhaust gas purification effect, the catalyst needs to be heated to a level higher than its active concentration. This is done using exhaust gas that is discharged and passes through a catalytic converter for exhaust gas purification.
ところで、近年、エンジンの燃費向上のため、エンジン
へ供給する燃料と空気との混合気を希薄化することが推
進されており、この混合気の希薄化に伴い排気ガス温度
が低下する傾向にある。このため従来の如く、排気マニ
ホールドのガス流出口或いは排気管の途中にコンバータ
ケースが接続され、該コンバータケース内に全ての触媒
が配設されていると、混合気の希薄化により排気ガス温
度が低下している上に、更にエンジンより触媒へ至る闇
に排気ガスの温度が更に低下することにより触媒の温度
不足が生じ、触媒コンバータの排気ガス浄化作用が低下
することがある。Incidentally, in recent years, in order to improve engine fuel efficiency, it has been promoted to dilute the mixture of fuel and air supplied to the engine, and as the mixture becomes diluted, the exhaust gas temperature tends to decrease. . For this reason, if the converter case is connected to the gas outlet of the exhaust manifold or in the middle of the exhaust pipe, and all the catalysts are located inside the converter case, as in the past, the exhaust gas temperature will decrease due to the dilution of the air-fuel mixture. In addition to this, the temperature of the exhaust gas from the engine to the catalyst further decreases, resulting in insufficient temperature of the catalyst, which may reduce the exhaust gas purification effect of the catalytic converter.
本発明は触媒をエンジンにより近付けて配設でき、これ
により高温の排気ガスが触媒を通過するようにして触媒
が良好な排気ガス浄化作用を発揮するよう改良されたモ
ノリス触媒保持装置を提供することを目的としている。The present invention provides an improved monolithic catalyst holding device in which the catalyst can be disposed closer to the engine, thereby allowing high-temperature exhaust gas to pass through the catalyst so that the catalyst exhibits a good exhaust gas purification effect. It is an object.
かかる目的は、本発明によれば、排気マニホールドのガ
ス流出口に接続され該ガス流出口より排気マニホールド
外に延在してモノリス触媒本体の一部を受入れるコンバ
ータケースと、前記ガス流出口より排気マニホールド内
に延在し前記モノリス触媒本体の他の一部を受入れる筒
状リテーナとを有しているモノリス触媒保持装置によっ
て達成される。According to the present invention, the converter case is connected to a gas outlet of an exhaust manifold and extends outside the exhaust manifold from the gas outlet to receive a part of the monolith catalyst body; This is accomplished by a monolith catalyst holding device having a cylindrical retainer extending into the manifold and receiving another portion of the monolith catalyst body.
かかる構成によれば、モノリス触媒本体の一部が排気マ
ニホールド内に位置するようになり、これによりエンジ
ンより排出される排気ガスが温度を殆ど低下することな
くモノリス触媒本体を通過するようになり、触媒が温度
不足を生じることが回避され、触媒は有効な触媒作用を
実して良好な排気ガス浄化作用を発揮するようになる。According to this configuration, a part of the monolithic catalyst body is located within the exhaust manifold, so that the exhaust gas discharged from the engine passes through the monolithic catalyst body without substantially reducing the temperature. This prevents the catalyst from being under-temperature, allowing the catalyst to perform an effective catalytic action and provide a good exhaust gas purification action.
また本発明によるモノリス触媒保持装置によれば、筒状
リテーナの排気マニホールドへの進入長さを変更するの
みで長さの異なったモノリス触媒本体の収容保持に対処
でき、充填触媒の容量を自由に選択することが可能にな
る。Furthermore, according to the monolith catalyst holding device according to the present invention, it is possible to accommodate and hold monolith catalyst bodies of different lengths simply by changing the length of entry of the cylindrical retainer into the exhaust manifold, and the capacity of the packed catalyst can be freely adjusted. It becomes possible to choose.
以下に添付の図を参照して本発明を実施例について詳細
に説明する。The invention will now be described in detail by way of example embodiments with reference to the accompanying drawings.
第１図は本発明によるモノリス触媒保持装置の一つの実
施例を示す縦断面図、第２図は第１図の線■−■に沿う
断面図である。これらの図に於て１は排気マニホールド
を示している。排気マニホールド１は一つの円形断面の
ガス流出口２を有しており、該ガス流出口には接続用フ
ランジ３が設けられている。４はコンバータケースを示
しており、該コンバータケースは略円筒状をなし、一端
に設けられた接続７ランジ５にて接続７ランジ３にボル
ト６によって締結されている。コンバータケース４はそ
の他端近傍にモノリス触媒本体Ｍの一端の外周端部を環
状クッション部材７を介して保持Ｊ−るための段壁部８
を有している。コンバータケース４の他端はガス出口９
として構成され、該ガス出口には接続７ランジ１０が設
けられている。FIG. 1 is a longitudinal cross-sectional view showing one embodiment of the monolithic catalyst holding device according to the present invention, and FIG. 2 is a cross-sectional view taken along the line ■-■ in FIG. In these figures, 1 indicates the exhaust manifold. The exhaust manifold 1 has a gas outlet 2 of circular cross section, which is provided with a connecting flange 3. Reference numeral 4 designates a converter case, which has a substantially cylindrical shape and is fastened to the connection 7 flange 3 by a bolt 6 at a connection 7 flange 5 provided at one end. The converter case 4 has a stepped wall portion 8 near the other end for holding the outer peripheral end of one end of the monolithic catalyst body M via an annular cushion member 7.
have. The other end of the converter case 4 is the gas outlet 9
The gas outlet is provided with a connection 7 flange 10.
１１は円筒状リテーナを示している。円筒状リテーナ１
１はその一端外側に設けられた環状フランジ１２にて接
続７ランジ３と５との間に挾まれてこれらより支持され
、この支持部より排気マニホールド１内に延在し、その
延在端に内側へ延在する環状フランジ１３を有している
。環状７ランジ１３は環状クッション部材１４を介して
モノリス触媒本体Ｍの他端の外周縁部を保持するように
なっている。11 indicates a cylindrical retainer. Cylindrical retainer 1
1 is sandwiched between and supported by the connecting 7 flanges 3 and 5 by an annular flange 12 provided on the outside of one end thereof, extends into the exhaust manifold 1 from this supporting part, and has a It has an annular flange 13 extending inward. The annular 7-flange 13 is configured to hold the outer peripheral edge of the other end of the monolithic catalyst body M via an annular cushion member 14.
またコンバータケース４の接続７ランジ側の開口端はモ
ノリス触媒本体の出入が行われるよう開口しており、そ
の開口端は、第３図によく示されている如く、テーパ状
に拡径されている。このテーパ部１５には耐熱性の環状
シール部材１６が装填され、モノリス触媒本体Ｍとコン
バータケース４との間の間隙を閉じてガスシールを行っ
ている。The open end of the converter case 4 on the flange side of the connection 7 is open so that the monolith catalyst body can be taken in and out, and the open end has a tapered diameter as shown in FIG. There is. This tapered portion 15 is loaded with a heat-resistant annular seal member 16 to close the gap between the monolithic catalyst main body M and the converter case 4 and perform gas sealing.
コンバータケース４のシール部材装填部分が上述の如く
テーパ状になっていることにより、シール部材の挿入性
が改善され、該シール部材によりガス漏れが確実に防止
されるようになる。またフン＝５−
バータケース４とモノリス触媒本体Ｍとの間の円筒状間
隙及び円筒状リテーナ１１とモノリス触媒本体Ｍとの環
状空隙には各々セラミックファイバ或いは緻密なワイヤ
メッユなどにより構成された耐熱クッション部材１７．
１８が充填されている。Since the sealing member loading portion of the converter case 4 is tapered as described above, the ease of inserting the sealing member is improved, and the sealing member reliably prevents gas leakage. Further, in the cylindrical gap between the converter case 4 and the monolithic catalyst body M and the annular gap between the cylindrical retainer 11 and the monolithic catalyst body M, there is a heat-resistant cushion made of ceramic fiber or dense wire mesh, respectively. Member 17.
18 is filled.
上述の如き構成によりモノリス触媒本体Ｍはコンバータ
ケース４の段壁部８と円筒状リテーナ１１の環状フラン
ジ１３との間に環状クッション部材７．１４を介して挾
まれてこれらより支持される。With the above-described structure, the monolith catalyst body M is sandwiched between the stepped wall portion 8 of the converter case 4 and the annular flange 13 of the cylindrical retainer 11 via the annular cushion member 7.14, and is supported by these.
以上に於ては本発明を特定の実施例について詳細に説明
したが、本発明はこれに限定されるものではなく、本発
明の範囲内にて種々の実施例が可能であることは当業者
にとって明らかであろう。Although the present invention has been described in detail above with reference to specific embodiments, it is understood by those skilled in the art that the present invention is not limited thereto, and that various embodiments can be made within the scope of the present invention. It would be obvious for
第１図は本発明によるモノリス触媒保持装置の一つの実
施例を示す縦断面図、第２図は第１図の線■−■に沿う
断面図、第３図はコンバータケースの開口端部分を拡大
して示す断片的な縦断面図である。
６−
１・・・排気マニホールド、２・・・ガス流出０．３・
・・接続フランジ、４・・・］ンバータケース、５・・
・接続７ランジ、６・・・ボルト、７・・・環状クッシ
ョン部材。
８・・・段壁部、９・・・ガス出口、１０・・・接続フ
ランジ。
１１・・・円筒状リテーナ、１２．１３・・・環状７ラ
ンジ、１４・・・環状クッション部材、１５・・・テー
パ部。
１６・・・環状シール部材、１７．１８・・・クッショ
ン部材
特許出願人 トヨタ自動車工業株式会社代
理 人 弁理士 明 石 昌
毅７−
第 １ 図Fig. 1 is a longitudinal cross-sectional view showing one embodiment of the monolithic catalyst holding device according to the present invention, Fig. 2 is a cross-sectional view taken along the line ■-■ in Fig. 1, and Fig. 3 shows the open end portion of the converter case. It is a fragmentary longitudinal cross-sectional view enlarged and shown. 6- 1... Exhaust manifold, 2... Gas outflow 0.3.
...Connection flange, 4...] Converter case, 5...
- Connection 7 lange, 6... bolt, 7... annular cushion member. 8... Step wall portion, 9... Gas outlet, 10... Connection flange. DESCRIPTION OF SYMBOLS 11... Cylindrical retainer, 12.13... Annular 7 langes, 14... Annular cushion member, 15... Taper part. 16...Annular seal member, 17.18...Cushion member Patent applicant: Toyota Motor Corporation representative
Attorney Patent Attorney Takeshi Akashi 7- Figure 1
Claims (1)
より排気マニホールド外に延在してモノリス触媒本体の
一部を受入れるコンバータケースと、前記ガス流出口よ
り排気マニホールド内に延在し前記モノリス触媒本体の
他の一部を受入れる筒状リテーナとを有しているモノリ
ス触媒保持装置。a converter case connected to a gas outlet of the exhaust manifold and extending outside the exhaust manifold from the gas outlet to receive a portion of the monolith catalyst body; and a converter case extending into the exhaust manifold from the gas outlet and the monolith catalyst body and a cylindrical retainer for receiving another part of the monolithic catalyst holding device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20669781A JPS58107811A (en) | 1981-12-21 | 1981-12-21 | Monolith catalyst holder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20669781A JPS58107811A (en) | 1981-12-21 | 1981-12-21 | Monolith catalyst holder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58107811A true JPS58107811A (en) | 1983-06-27 |
Family
ID=16527611
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20669781A Pending JPS58107811A (en) | 1981-12-21 | 1981-12-21 | Monolith catalyst holder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58107811A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5220789A (en) * | 1991-03-05 | 1993-06-22 | Ford Motor Company | Integral unitary manifold-muffler-catalyst device |
| US6247304B1 (en) * | 1999-05-10 | 2001-06-19 | Hyundai Motor Company | Coupling mechanism between exhaust pipe and catalytic converter |
| JP2008196498A (en) * | 2008-05-16 | 2008-08-28 | Yanmar Co Ltd | Exhaust emission control device |
-
1981
- 1981-12-21 JP JP20669781A patent/JPS58107811A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5220789A (en) * | 1991-03-05 | 1993-06-22 | Ford Motor Company | Integral unitary manifold-muffler-catalyst device |
| US6247304B1 (en) * | 1999-05-10 | 2001-06-19 | Hyundai Motor Company | Coupling mechanism between exhaust pipe and catalytic converter |
| JP2008196498A (en) * | 2008-05-16 | 2008-08-28 | Yanmar Co Ltd | Exhaust emission control device |
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