JP2800181B2 - Catalyst device for internal combustion engine - Google Patents

Catalyst device for internal combustion engine

Info

Publication number
JP2800181B2
JP2800181B2 JP63108652A JP10865288A JP2800181B2 JP 2800181 B2 JP2800181 B2 JP 2800181B2 JP 63108652 A JP63108652 A JP 63108652A JP 10865288 A JP10865288 A JP 10865288A JP 2800181 B2 JP2800181 B2 JP 2800181B2
Authority
JP
Japan
Prior art keywords
internal combustion
combustion engine
catalytic converter
exhaust
metal
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 - Fee Related
Application number
JP63108652A
Other languages
Japanese (ja)
Other versions
JPH01280612A (en
Inventor
勝利 上田
文明 平島
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.)
Suzuki Motor Co Ltd
Original Assignee
Suzuki Motor Co Ltd
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 Suzuki Motor Co Ltd filed Critical Suzuki Motor Co Ltd
Priority to JP63108652A priority Critical patent/JP2800181B2/en
Priority to KR1019880015358A priority patent/KR910009709B1/en
Publication of JPH01280612A publication Critical patent/JPH01280612A/en
Application granted granted Critical
Publication of JP2800181B2 publication Critical patent/JP2800181B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • 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
    • F01N13/009—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 having two or more separate purifying devices arranged in series
    • 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
    • F01N2330/00—Structure of catalyst support or particle filter
    • F01N2330/02—Metallic plates or honeycombs, e.g. superposed or rolled-up corrugated or otherwise deformed sheet metal
    • 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
    • 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
    • F01N3/2842—Arrangements for mounting catalyst support in housing, e.g. with means for compensating thermal expansion or vibration specially adapted for monolithic supports, e.g. of honeycomb type

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Exhaust Gas After Treatment (AREA)

Description

【発明の詳細な説明】 ［産業上の利用分野］ この発明は内燃機関用触媒装置に係り、特に機関出力
の低下を招くことなく、排気浄化効率を向上させ得る内
燃機関用触媒装置に関する。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a catalyst device for an internal combustion engine, and more particularly to a catalyst device for an internal combustion engine that can improve exhaust gas purification efficiency without causing a decrease in engine output.

［従来の技術］ 内燃機関においては、内燃機関からの有害排気を所定
の気体構成、温度条件のもとで、触媒物質の作用によっ
て無害排気に変換するために、排気管途中に触媒コンバ
ータが備えられた触媒装置を設けている。2. Description of the Related Art In an internal combustion engine, a catalytic converter is provided in the middle of an exhaust pipe to convert harmful exhaust gas from the internal combustion engine into harmless exhaust gas by the action of a catalytic substance under a predetermined gas composition and temperature conditions. Provided catalyst device.

このような触媒装置としては、例えば実公昭57−4737
4号公報に開示されている。この公報に記載のものは、
触媒体をこの触媒体を被包する金属筒と一体化すること
により、触媒体を堅固に保持するものである。As such a catalyst device, for example, Japanese Utility Model Publication No. 57-4737
No. 4 discloses this. What is described in this publication is
By integrating the catalyst body with the metal cylinder enclosing the catalyst body, the catalyst body is firmly held.

また、触媒コンバータには、排気流に対して多数の排
気流通孔が形成され、セラミック系からなるセラミック
触媒体を設けたものがある。Some catalytic converters are provided with a ceramic catalyst body made of ceramics, in which a large number of exhaust flow holes are formed for an exhaust flow.

［発明が解決しようとする問題点］ ところで、過給機付内燃機関においては、過給機を通
過した排気温度が過給機を有しない内燃機関排気温度よ
りも低くなり易く、また、過給機の存在のために、温度
が高い内燃機関側に触媒コンバータを取付けることがで
きず、このため触媒コンバータを内燃機関から遠く離れ
た箇所の排気管に取付けなければならない。[Problems to be Solved by the Invention] In the internal combustion engine with a supercharger, the temperature of the exhaust gas passing through the supercharger tends to be lower than the exhaust temperature of the internal combustion engine having no supercharger. Due to the presence of the engine, it is not possible to mount the catalytic converter on the side of the hot internal combustion engine, which must be mounted on the exhaust pipe far away from the internal combustion engine.

このため、過給機を有しない内燃機関に取付ける触媒
コンバータに比し、大容量の触媒コンバータを取付けな
ければ、適正な排気浄化性能を確保し得ないという不都
合がある。For this reason, there is an inconvenience that an appropriate exhaust gas purification performance cannot be secured unless a large-capacity catalytic converter is attached, as compared with a catalytic converter attached to an internal combustion engine having no supercharger.

この不都合を解消するために、過給機近傍に小型の触
媒体を取付けて排気の一部を浄化し、排気温度を上昇さ
せるスタータ触媒コンバータを設けたが、このスタータ
触媒コンバータの触媒体の断面積を大きく取れないの
で、背圧、つまり排気通路内の排気の圧力が高くなり、
機関出力が低下する不都合を招来した。To solve this inconvenience, a starter catalytic converter was installed near the turbocharger to clean a part of the exhaust and raise the exhaust gas temperature by installing a small catalytic body. Since the area cannot be increased, the back pressure, that is, the pressure of the exhaust gas in the exhaust passage increases,
This has led to the problem of reduced engine output.

［発明の目的］ そこでこの発明の目的は、上述の不都合を除去すべ
く、金属系触媒コンバータの下流側にセラミック系触媒
コンバータを設けることにより、金属系触媒コンバータ
にスタータ触媒コンバータの機能を有せしめ、機関出力
の低下を招くことなく排気浄化効率を向上させ得る内燃
機関用触媒装置を実現するにある。[Object of the Invention] Accordingly, an object of the present invention is to provide a metal-based catalytic converter with a function of a starter catalytic converter by providing a ceramic-based catalytic converter downstream of the metallic-based catalytic converter in order to eliminate the above-mentioned disadvantages. Another object of the present invention is to realize a catalyst device for an internal combustion engine that can improve exhaust gas purification efficiency without causing a decrease in engine output.

［問題点を解決するための手段］ この目的を達成するためにこの発明は、内燃機関の排
気浄化を果すべく多段に複数の触媒コンバータを直列状
態に配設した内燃機関用触媒装置において、前記内燃機
関の一側に排気マニホルドの一端側を設け、もの排気マ
ニホルドの他端側には過給機を介して排気管を連結して
設け、この排気管を前記内燃機関の下方から前記内燃機
関の他側に延設し、金属触媒を担持させた金属板を持い
て構成した金属触媒体を有する金属系触媒コンバータを
前記内燃機関の下方で前記排気管途中に設け、この金属
系触媒コンバータ下流側で前記排気管には排気流に対し
て多数の排気流通孔が形成されたセラミック触媒体を有
するセラミック系触媒コンバータを設けたことを特徴と
する。Means for Solving the Problems In order to achieve this object, the present invention relates to a catalyst device for an internal combustion engine in which a plurality of catalytic converters are arranged in series in multiple stages to purify exhaust gas of an internal combustion engine. One end of an exhaust manifold is provided on one side of the internal combustion engine, and an exhaust pipe is connected to the other end of the exhaust manifold via a supercharger, and the exhaust pipe is provided from below the internal combustion engine. A metal catalyst converter having a metal catalyst body extending and extending on the other side and having a metal plate carrying a metal catalyst is provided in the middle of the exhaust pipe below the internal combustion engine, and is provided downstream of the metal catalyst converter. On the side, the exhaust pipe is provided with a ceramic catalytic converter having a ceramic catalyst body in which a large number of exhaust flow holes are formed for an exhaust flow.

［作用］ この発明の構成によれば、内燃機関側からの排気は、
先ず、金属触媒体を設けた金属系触媒体コンバータによ
って浄化されつつ温度が上昇し、そして温度上昇した排
気はセラミック触媒体を設けた下流側のセラミック系触
媒コンバータによって効率よく浄化され、しかも、排気
通路内の排気の圧力が上昇することがなく、機関出力の
低下を防止する。[Operation] According to the configuration of the present invention, the exhaust gas from the internal combustion engine side is
First, the temperature rises while being purified by the metal-based catalytic converter provided with the metal catalyst, and the exhaust gas having the increased temperature is efficiently purified by the downstream-side ceramic-based catalytic converter provided with the ceramic catalytic body. The pressure of the exhaust gas in the passage does not increase, preventing a decrease in engine output.

［実施例］ 以下図面に基づいてこの発明の実施例を詳細且つ具体
的に説明する。Embodiment An embodiment of the present invention will be described below in detail and specifically with reference to the drawings.

第１〜３図は、この発明の実施例を示すものである。
図において、２は内燃機関、４はシリンダヘッド、６は
排気マニホルド、８は過給機である。1 to 3 show an embodiment of the present invention.
In the figure, 2 is an internal combustion engine, 4 is a cylinder head, 6 is an exhaust manifold, and 8 is a supercharger.

第１図に示す如く、排気マニホルド６の一端側は、内
燃機関２の一側に設けられている。排気マニホルド６の
他端側には、過給機８を介して排気管10が連結されてい
る。この排気管10は、内燃機関２の下方から内燃機関２
の他側に延設されている。また、この排気管10途中に
は、過給機８に最も近く内燃機関２の下方で最前段の１
段目触媒コンバータ12と、この１段目触媒コンバータ12
下流側に次段の２段目触媒コンバータ14とが取付けられ
ている。As shown in FIG. 1, one end of the exhaust manifold 6 is provided on one side of the internal combustion engine 2. An exhaust pipe 10 is connected to the other end of the exhaust manifold 6 via a supercharger 8. The exhaust pipe 10 is provided from below the internal combustion engine 2 to the internal combustion engine 2.
Extending to the other side. In the middle of the exhaust pipe 10, the first stage 1 is located below the internal combustion engine 2, which is closest to the supercharger 8.
The first-stage catalytic converter 12 and the first-stage catalytic converter 12
The second stage catalytic converter 14 of the next stage is mounted on the downstream side.

前記１段目触媒コンバータ12は、第２図に示す如く、
例えば板厚が0.1mm以下の耐熱鋼材からなる平板16と波
板18とを重合して組合せ、且つ渦巻状に巻いて形成した
金属担体にウォシュコート（Al2O3）と触媒金属（Pt、R
h、Pd等）を担持させた金属触媒体22を有し、この金属
触媒体22を板厚t1が例えば1.5mm位に形成された第１ケ
ース24内に保持させて構成されている。The first stage catalytic converter 12, as shown in FIG.
For example, a wash support (Al 2 O 3 ) and a catalytic metal (Pt, R
h, has a metal catalyst body 22 was supported Pd, etc.), and is configured by holding the metal catalyst 22 in the first case 24 to the plate thickness t 1 is formed, for example, 1.5mm-position.

また、前記２段目触媒コンバータ14は、第３図に示す
如く、排気流に対して正方形状の多数の排気流通孔26を
有する、所謂モノリス型のセラミック系からなり、触媒
が担持されたセラミック触媒体28を有し、このセラミッ
ク触媒体28を被包する支持部材30によって保持させ、の
支持部材30を板厚t2が例えば1.5〜2.0mm位に形成された
第２ケース32によって抱持させるとともに支持部材30の
両端部を保護する保護部材34、34を設けて構成されてい
る。As shown in FIG. 3, the second-stage catalytic converter 14 is formed of a so-called monolithic ceramic system having a large number of square exhaust flow holes 26 with respect to an exhaust flow, and a ceramic supporting a catalyst. has a catalyst body 28, retaining the second case 32 the ceramic catalyst body 28 is held by a support member 30 encapsulating, formed a support member 30 of the plate thickness t 2 is for example 1.5~2.0mm position Protective members 34, 34 for protecting both ends of the support member 30 are provided.

更に、金属触媒体22は、セラミック触媒体28の容量の
1/5〜1/3位の容量に設定されている。Further, the metal catalyst body 22 has a capacity of the ceramic catalyst body 28.
The capacity is set to 1/5 to 1/3.

即ち、この実施例においては、金属触媒体22が排気に
よって温度上昇し、この金属触媒体22によって排気温度
を上昇させるので、１段目触媒コンバータ12を、従来の
スタータ触媒コンバータとして利用するものである。That is, in this embodiment, the temperature of the metal catalyst body 22 is increased by the exhaust gas, and the exhaust temperature is increased by the metal catalyst body 22. Therefore, the first-stage catalytic converter 12 is used as a conventional starter catalytic converter. is there.

次に、この実施例の作用を説明する。 Next, the operation of this embodiment will be described.

内燃機関２から排出される排気は、先ず、１段目触媒
コンバータ12の金属触媒体22の波板18間を流通する際
に、浄化させつつ温度上昇し、そして、次段の２段目触
媒コンバータ14側に流去する。この２段目触媒コンバー
タ14において、温度上昇した排気は、セラミック触媒体
28と反応が良好になり、浄化性能が向上する。First, when exhaust gas discharged from the internal combustion engine 2 flows between the corrugated plates 18 of the metal catalyst body 22 of the first-stage catalytic converter 12, the temperature of the exhaust gas increases while purifying the exhaust gas. It flows off to the converter 14 side. In the second stage catalytic converter 14, the exhaust gas whose temperature has risen is
The reaction with 28 is improved, and the purification performance is improved.

即ち、１段目触媒コンバータ12には支持部材を不要と
し、金属触媒体22の断面積を大きくすることができ、し
かも第２ケース32の板厚t2が1.5〜2.0mmであるのに比
し、第１ケース24の板厚t1を1.5mm位にして開口率を大
きくすることができる。この結果、１段目触媒コンバー
タ12に金属触媒体22を設けることにより、同一容積（ス
ペース）であるならば大なる有効断面積を確保し、背圧
を抑制して機関出力の向上を図るとともに、排気浄化性
能を向上させることができる。That is, the first-stage catalytic converter 12 is unnecessary support member, the ratio to be able to increase the cross-sectional area of the metal catalyst 22, moreover thickness t 2 of the second case 32 is 1.5~2.0mm and the thickness t 1 of the first case 24 can be increased aperture ratio in the 1.5mm position. As a result, by providing the metal catalyst body 22 in the first-stage catalytic converter 12, a large effective sectional area is ensured if the volume is the same (space), the back pressure is suppressed, and the engine output is improved. In addition, the exhaust gas purification performance can be improved.

［発明の効果］ 以上詳細な説明から明らかなようにこと発明によれ
ば、内燃機関の一側に排気マニホルドの一端側を設け、
排気マニホルドの他端側には過給機を介して排気管を連
結して設け、排気管を内燃機関の下方から内燃機関の他
側に延設し、金属触媒を担持させた金属板を巻いて構成
した金属触媒体を有する金属系触媒コンバータを内燃機
関の下方で排気管途中に設け、金属系触媒コンバータ下
流側で排気管には排気流に対して多数の排気流通孔が形
成されたセラミック触媒体を有するセラミック系触媒コ
ンバータを設けたことにより、機関出力の低下を招くこ
となく排気浄化効率を向上させて得て、また、小型の金
属系触媒コンバータを内燃機関側に位置させ、スタータ
触媒コンバータとして利用し、浄化性能を向上させ得
る。[Effect of the Invention] As is apparent from the detailed description above, according to the invention, one end of the exhaust manifold is provided on one side of the internal combustion engine,
An exhaust pipe is connected to the other end of the exhaust manifold via a supercharger, and the exhaust pipe extends from below the internal combustion engine to the other side of the internal combustion engine, and is wound with a metal plate supporting a metal catalyst. A ceramic having a metal catalyst body having a metal catalyst body formed in the middle of an exhaust pipe below an internal combustion engine, and having a large number of exhaust flow holes for an exhaust flow in an exhaust pipe downstream of the metal catalyst converter. By providing a ceramic catalytic converter having a catalyst body, it is possible to improve the exhaust gas purification efficiency without lowering the engine output and obtain a small metal catalytic converter on the side of the internal combustion engine. It can be used as a converter to improve purification performance.

【図面の簡単な説明】[Brief description of the drawings]

第１〜３図はこの発明の実施例を示し、第１図は内燃機
関の触媒装置の概略側面図、第２図は１段目触媒コンバ
ータの正面図、第３図は２段目触媒コンバータの正面図
である。 図において、２は内燃機関、４はシリンダヘッド、６は
排気マニホルド、８は過給機、10は排気管、12は１段目
触媒コンバータ、14は２段目触媒コンバータ、16は平
板、18は波板、22は金属触媒体、24は第１ケース、28は
セラミック触媒体、30は支持部材、そして32は第２ケー
スである。1 to 3 show an embodiment of the present invention, FIG. 1 is a schematic side view of a catalyst device for an internal combustion engine, FIG. 2 is a front view of a first stage catalytic converter, and FIG. 3 is a second stage catalytic converter. FIG. In the figure, 2 is an internal combustion engine, 4 is a cylinder head, 6 is an exhaust manifold, 8 is a supercharger, 10 is an exhaust pipe, 12 is a first-stage catalytic converter, 14 is a second-stage catalytic converter, 16 is a flat plate, 18 Is a corrugated plate, 22 is a metal catalyst, 24 is a first case, 28 is a ceramic catalyst, 30 is a support member, and 32 is a second case.

Claims (1)

(57)【特許請求の範囲】(57) [Claims] 【請求項１】内燃機関の排気浄化を果すべく多段に複数
の触媒コンバータを直列状態に配設した内燃機関用触媒
装置において、前記内燃機関の一側に排気マニホルドの
一端側を設け、この排気マニホルドの他端側には過給機
を介して排気管を連結して設け、この排気管を前記内燃
機関の下方から前記内燃機関の他側に延設し、金属触媒
を担持させた金属板を巻いて構成した金属触媒体を有す
る金属系触媒コンバータを前記内燃機関の下方で前記排
気管途中に設け、この金属系触媒コンバータ下流側で前
記排気管には排気流に対して多数の排気流通孔が形成さ
れたセラミック触媒体を有するセラミック系触媒コンバ
ータを設けたことを特徴とする内燃機関用触媒装置。A catalyst device for an internal combustion engine in which a plurality of catalytic converters are arranged in series in multiple stages to purify exhaust gas of an internal combustion engine. One end of an exhaust manifold is provided on one side of the internal combustion engine. An exhaust pipe is connected to the other end of the manifold via a supercharger, and the exhaust pipe extends from below the internal combustion engine to the other side of the internal combustion engine, and supports a metal plate carrying a metal catalyst. A metal-based catalytic converter having a metal catalyst body wound around is provided in the middle of the exhaust pipe below the internal combustion engine. A catalyst device for an internal combustion engine, comprising a ceramic catalytic converter having a ceramic catalyst body having holes formed therein.
JP63108652A 1988-04-30 1988-04-30 Catalyst device for internal combustion engine Expired - Fee Related JP2800181B2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP63108652A JP2800181B2 (en) 1988-04-30 1988-04-30 Catalyst device for internal combustion engine
KR1019880015358A KR910009709B1 (en) 1988-04-30 1988-11-22 Catalytic device for internal combustion engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP63108652A JP2800181B2 (en) 1988-04-30 1988-04-30 Catalyst device for internal combustion engine

Publications (2)

Publication Number Publication Date
JPH01280612A JPH01280612A (en) 1989-11-10
JP2800181B2 true JP2800181B2 (en) 1998-09-21

Family

ID=14490240

Family Applications (1)

Application Number Title Priority Date Filing Date
JP63108652A Expired - Fee Related JP2800181B2 (en) 1988-04-30 1988-04-30 Catalyst device for internal combustion engine

Country Status (2)

Country Link
JP (1) JP2800181B2 (en)
KR (1) KR910009709B1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04140410A (en) * 1990-09-28 1992-05-14 Hino Motors Ltd Exhaust emission control device for diesel engine
JP6024694B2 (en) 2014-03-25 2016-11-16 トヨタ自動車株式会社 Exhaust gas purification system for an internal combustion engine with a supercharger

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6317818U (en) * 1986-07-18 1988-02-05
JPS6361525U (en) * 1986-10-13 1988-04-23

Also Published As

Publication number Publication date
KR910009709B1 (en) 1991-11-25
JPH01280612A (en) 1989-11-10
KR890016275A (en) 1989-11-28

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