JPH10212938A - Exhaust gas emission control device for internal combustion engine - Google Patents
Exhaust gas emission control device for internal combustion engineInfo
- Publication number
- JPH10212938A JPH10212938A JP9019387A JP1938797A JPH10212938A JP H10212938 A JPH10212938 A JP H10212938A JP 9019387 A JP9019387 A JP 9019387A JP 1938797 A JP1938797 A JP 1938797A JP H10212938 A JPH10212938 A JP H10212938A
- Authority
- JP
- Japan
- Prior art keywords
- exhaust gas
- dimensional structure
- catalyst
- exhaust
- structure catalyst
- 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
- F01N3/2803—Construction of catalytic reactors characterised by structure, by material or by manufacturing of catalyst support
-
- 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
- F01N13/0097—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 the purifying devices are arranged in a single 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
- F01N3/2842—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)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、燃焼後の排気ガ
スを浄化する内燃機関の排気ガス浄化装置に関するもの
である。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an exhaust gas purifying apparatus for an internal combustion engine for purifying exhaust gas after combustion.
【０００２】[0002]
【従来の技術】内燃機関の排気ガス浄化として、例えば
内燃機関に接続される排気管内に、排気ガス浄化用触媒
を備えるものがある。この排気ガス浄化用触媒としてＰ
ｔ、Ｒｈ、Ｐｄを主成分とする貴金属触媒によって行わ
れている。2. Description of the Related Art As exhaust gas purification of an internal combustion engine, there is an exhaust gas purification catalyst provided in an exhaust pipe connected to the internal combustion engine, for example. As this exhaust gas purifying catalyst, P
It is performed by a noble metal catalyst containing t, Rh, and Pd as main components.
【０００３】[0003]
【発明が解決しようとする課題】ところで、Ｐｔ、Ｒ
ｈ、Ｐｄを主成分とする貴金属触媒を保持する材料とし
て、例えばハニカム状の担体やパイプがある。パイプに
直接貴金属触媒を担持させるとその触媒作用面積は少な
く設置可能な場所を考えると限られた量の排気ガスしか
浄化できない。また、ハニカム状の担体になると、その
表面積が飛躍的に大きくなるが高価になると同時に排気
ガスの排出抵抗も大きくなる。By the way, Pt, R
As a material for holding a noble metal catalyst containing h and Pd as main components, there are, for example, honeycomb-shaped carriers and pipes. When a noble metal catalyst is directly supported on a pipe, the catalytic action area is small and only a limited amount of exhaust gas can be purified in consideration of a place where the noble metal catalyst can be installed. In the case of a honeycomb-shaped carrier, the surface area is dramatically increased, but the cost is increased and the exhaust gas discharge resistance is also increased.
【０００４】また、ハニカム状の担体やパイプでは、円
筒状の構造体のために排気管の曲がり部に取り付けられ
ることが困難で、排気管内の設置する場所にいろいろな
制約があった。[0004] Further, in the case of a honeycomb-shaped carrier or pipe, it is difficult to attach it to a bent portion of the exhaust pipe due to the cylindrical structure, and there are various restrictions on the installation place in the exhaust pipe.
【０００５】この発明は、かかる点に鑑みてなされたも
ので、効果的に排気ガスの浄化ができ、しかも安価で排
気ガスの排出抵抗も小さく、排気系への設置場所の自由
度が向上する内燃機関の排気ガス浄化装置を提供するこ
とを目的としている。[0005] The present invention has been made in view of the above points, and can effectively purify exhaust gas, and is inexpensive, has low exhaust gas discharge resistance, and improves the degree of freedom of installation location in an exhaust system. It is an object of the present invention to provide an exhaust gas purification device for an internal combustion engine.
【０００６】[0006]
【課題を解決するための手段】前記課題を解決し、かつ
目的を達成するために、請求項１記載の発明は、内燃機
関の排気系に、排気ガス浄化用触媒を備える内燃機関の
排気ガス浄化装置において、前記排気ガス浄化用触媒
を、発泡多孔質三次元構造体触媒、針金三次元構造体触
媒、パンチメタル三次元構造体触媒のいずれかで構成し
たことを特徴としている。排気ガス浄化用触媒を、排気
系の例えば排気管の曲がり部の形状に合わせて変形する
等いろいろな部分に直接設置でき、排気系への設置場所
の自由度が向上する。また、排気系のいろいろな場所に
設置できるようになり、排気ガス浄化効率が向上する。
また、安価で排気ガスの排出抵抗も小さくなり、排気ガ
ス抵抗が大きい場所でも使用できる。In order to solve the above-mentioned problems and to achieve the object, the invention according to claim 1 provides an exhaust gas of an internal combustion engine having an exhaust gas purifying catalyst in an exhaust system of the internal combustion engine. In the purifying apparatus, the exhaust gas purifying catalyst is constituted by one of a foamed porous three-dimensional structure catalyst, a wire three-dimensional structure catalyst, and a punched metal three-dimensional structure catalyst. The exhaust gas purifying catalyst can be directly installed in various parts of the exhaust system, for example, deformed according to the shape of the bent portion of the exhaust pipe, and the degree of freedom of the installation location in the exhaust system is improved. Further, it can be installed at various places in the exhaust system, and the exhaust gas purification efficiency is improved.
Further, it is inexpensive, has low exhaust gas exhaust resistance, and can be used in places where exhaust gas resistance is high.
【０００７】[0007]
【発明の実施の形態】以下、この発明の内燃機関の排気
ガス浄化装置の実施の形態について説明する。図１は内
燃機関の排気ガス浄化装置を備える自動二輪車の側面図
である。自動二輪車１の車体フレーム２には、内燃機関
３が搭載されている。この内燃機関３の気筒４の後側に
は、吸気系５を構成する吸気管６が接続され、さらに吸
気管６に気化器７が接続されている。内燃機関３の気筒
４の前側には、排気系８を構成する排気管９が接続さ
れ、この排気管９は内燃機関３の前側から下側方を通
り、後方の後輪７０の側方まで延びている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an exhaust gas purifying apparatus for an internal combustion engine according to the present invention will be described below. FIG. 1 is a side view of a motorcycle provided with an exhaust gas purification device for an internal combustion engine. An internal combustion engine 3 is mounted on a body frame 2 of the motorcycle 1. An intake pipe 6 forming an intake system 5 is connected to the rear side of the cylinder 4 of the internal combustion engine 3, and a carburetor 7 is connected to the intake pipe 6. An exhaust pipe 9 constituting an exhaust system 8 is connected to the front side of the cylinder 4 of the internal combustion engine 3. The exhaust pipe 9 passes from the front side to the lower side of the internal combustion engine 3 and extends to the rear side of the rear wheel 70. Extending.
【０００８】この内燃機関３は、排気系８に排気ガス浄
化用触媒を備え、燃焼後の排気ガスを浄化するようにな
っている。次に、この内燃機関の排気ガス浄化装置につ
いて説明する。The internal combustion engine 3 is provided with an exhaust gas purifying catalyst in the exhaust system 8, and purifies the exhaust gas after combustion. Next, the exhaust gas purifying apparatus for the internal combustion engine will be described.
【０００９】図２乃至図４は排気ガス浄化用触媒を発泡
多孔質三次元構造体触媒で構成した実施の形態を示し、
図２は排気管へ発泡多孔質三次元構造体触媒を配置した
状態を示す図、図３は発泡多孔質三次元構造体触媒の構
成を示す模式図、図４は排気管への発泡多孔質三次元構
造体触媒の取付状態を示す図である。FIGS. 2 to 4 show an embodiment in which the exhaust gas purifying catalyst is constituted by a foamed porous three-dimensional structure catalyst.
FIG. 2 is a view showing a state in which a foamed porous three-dimensional structure catalyst is arranged in an exhaust pipe, FIG. 3 is a schematic view showing a structure of a foamed porous three-dimensional structure catalyst, and FIG. It is a figure which shows the attachment state of a three-dimensional-structure catalyst.
【００１０】この実施の形態では、排気ガス浄化用触媒
が発泡多孔質三次元構造体触媒１０で構成されている。
発泡多孔質三次元構造体触媒１０は、図２に示すように
排気管９のの曲がり部９ａに例えば３個配置されてい
る。この発泡多孔質三次元構造体触媒１０は円柱板状に
形成される。この発泡多孔質三次元構造体触媒１０の製
造の一例を示すと、スポンジ等の発泡樹脂体を導電処理
して、例えばニッケル、あるいはニッケルクロム等の金
属で電気メッキを施し、その後発泡樹脂体を燃焼除去
し、合金化して図３に示すような金属発泡体を製造す
る。In this embodiment, an exhaust gas purifying catalyst is constituted by a foamed porous three-dimensional structure catalyst 10.
As shown in FIG. 2, for example, three foamed porous three-dimensional structure catalysts 10 are arranged in a bent portion 9 a of the exhaust pipe 9. The three-dimensionally expanded porous catalyst 10 is formed in a columnar plate shape. An example of the production of the foamed porous three-dimensional structure catalyst 10 will be described. A foamed resin body such as a sponge is subjected to a conductive treatment, and is electroplated with a metal such as nickel or nickel chrome. It is burned off and alloyed to produce a metal foam as shown in FIG.
【００１１】この発泡多孔質三次元構造体触媒１０は、
図４（ａ）に示すように、排気管９の曲がり部９ａ内に
直接溶接する。あるいは、図４（ｂ）に示すように、排
気管９の曲がり部９ａに発泡多孔質三次元構造体触媒１
０を配置し、支持棒１１をクロスして櫛刺して保持す
る。また、図４（ｃ）に示すように、排気管９の曲がり
部９ａに保持体１２を溶接し、この保持体１２にマット
等の無機物のクッション１３を介して発泡多孔質三次元
構造体触媒１０を保持する。The foamed porous three-dimensional structure catalyst 10 is as follows:
As shown in FIG. 4 (a), welding is performed directly into the bent portion 9a of the exhaust pipe 9. Alternatively, as shown in FIG. 4 (b), the expanded porous three-dimensional structure
The support bar 11 is crossed and combed and held. As shown in FIG. 4 (c), a holding body 12 is welded to the bent portion 9a of the exhaust pipe 9, and a foamed porous three-dimensional structure catalyst is attached to the holding body 12 via an inorganic cushion 13 such as a mat. Hold 10
【００１２】このように、排気ガス浄化用触媒を、発泡
多孔質三次元構造体触媒１０で構成することで、排気系
８の例えば排気管９の曲がり部９ａの形状に合わせて変
形していろいろな部分に直接設置でき、排気系８への設
置場所の自由度が向上する。また、排気系８のいろいろ
な場所に設置できるようになり、内燃機関に応じて最適
な位置に発泡多孔質三次元構造体触媒１０を配置するこ
とができるため、排気ガス浄化効率が向上する。また、
発泡多孔質三次元構造体触媒１０であり、安価で排気ガ
スの排出抵抗も小さくなり、排気ガス抵抗が大きい場所
でも使用できる。As described above, since the exhaust gas purifying catalyst is constituted by the foamed porous three-dimensional structure catalyst 10, it is deformed in accordance with the shape of the bent portion 9a of the exhaust system 8, for example, the exhaust pipe 9, and variously. Can be installed directly on the exhaust system 8, and the degree of freedom of the installation location for the exhaust system 8 is improved. Further, since the catalyst can be installed at various places in the exhaust system 8, and the foamed porous three-dimensional structure catalyst 10 can be arranged at an optimum position according to the internal combustion engine, the exhaust gas purification efficiency is improved. Also,
The foamed porous three-dimensional structure catalyst 10 is inexpensive, has low exhaust gas discharge resistance, and can be used even in a place where exhaust gas resistance is high.
【００１３】図５は排気ガス浄化用触媒を発泡多孔質三
次元構造体触媒で構成した実施の形態を示す図である。
発泡多孔質三次元構造体触媒２０は、図２乃至図４に示
すものと同様に金属発泡体で構成されるが、この実施の
形態では、円筒状に形成されている。この円筒状の発泡
多孔質三次元構造体触媒２０は、同様に排気管９の曲が
り部９ａの形状に合わせて挿入して配置される。なお、
図２乃至図４の円柱板状の発泡多孔質三次元構造体触媒
１０及び図５の円筒状の発泡多孔質三次元構造体触媒２
０は、排気管９の曲がり部９に限定されず、直線部にも
同様に配置することができる。FIG. 5 is a view showing an embodiment in which the exhaust gas purifying catalyst is constituted by a foamed porous three-dimensional structure catalyst.
The foamed porous three-dimensional structure catalyst 20 is formed of a metal foam in the same manner as that shown in FIGS. 2 to 4, but is formed in a cylindrical shape in this embodiment. The cylindrical foamed porous three-dimensional structure catalyst 20 is similarly inserted and arranged according to the shape of the bent portion 9 a of the exhaust pipe 9. In addition,
The cylindrical foamed porous three-dimensional structure catalyst 10 shown in FIGS. 2 to 4 and the cylindrical foamed porous three-dimensional structured catalyst 2 shown in FIG.
0 is not limited to the bent portion 9 of the exhaust pipe 9 but can be similarly arranged in a straight portion.
【００１４】図６は排気ガス浄化用触媒を針金三次元構
造体触媒で構成した実施の形態を示す図である。図６
（ａ）の実施の形態の排気ガス浄化用触媒は、ステンレ
ス、チタン等の金属針金に触媒を担持させた針金三次元
構造体触媒３０で構成され、複数のうず巻状針金３０ａ
に軸方向の直線状針金３０ｂを溶接し、さらに径方向の
直線状針金３０ｃを溶接して構成される。図６（ｂ）の
実施の形態は、針金三次元構造体触媒４０が複数のうず
巻状２０Ｃｒ５Ａｌ箔４０ａに、軸方向の直線状針金４
０ｂを溶接して構成される。図６（ｃ）の実施の形態
は、針金三次元構造体触媒５０が複数の軸方向の直線状
パイプ棒５０ａに、環状針金５０ｂを溶接して構成され
る。FIG. 6 is a view showing an embodiment in which the exhaust gas purifying catalyst is constituted by a wire three-dimensional structure catalyst. FIG.
The exhaust gas purifying catalyst according to the embodiment (a) is constituted by a wire three-dimensional structure catalyst 30 in which a catalyst is carried on a metal wire such as stainless steel or titanium, and a plurality of spirally wound wires 30a.
, A linear wire 30b in the axial direction is welded, and a linear wire 30c in the radial direction is further welded. In the embodiment shown in FIG. 6B, the wire three-dimensional structure catalyst 40 includes a plurality of spirally wound 20Cr5Al foils 40a on an axial straight wire 4a.
0b is welded. In the embodiment shown in FIG. 6 (c), a wire three-dimensional structure catalyst 50 is formed by welding an annular wire 50b to a plurality of linear pipe rods 50a in the axial direction.
【００１５】このように、排気ガス浄化用触媒を、ステ
ンレス、チタン等の金属針金に触媒を担持させて針金三
次元構造体触媒３０，４０，５０で構成することで、排
気系８の例えば排気管９の曲がり部９ａの形状に合わせ
て変形する等いろいろな部分に直接溶接して設置でき、
排気系８への設置場所の自由度が向上する。また、排気
系８のいろいろな場所に設置できるようになり、同様に
内燃機関に応じて最適な位置に配置することができ気ガ
ス浄化効率が向上する。また、排気ガス浄化用触媒は、
針金三次元構造体触媒３０，４０，５０で構成されてお
り、より安価で排気ガスの排出抵抗もさらに小さくな
り、排気ガス抵抗が大きい場所でも使用できる。As described above, the exhaust gas purifying catalyst is constituted by the wire three-dimensionally structured catalysts 30, 40, and 50 by carrying the catalyst on a metal wire such as stainless steel or titanium. It can be directly welded and installed on various parts such as deforming according to the shape of the bent part 9a of the pipe 9,
The degree of freedom of the installation location in the exhaust system 8 is improved. Further, the exhaust system 8 can be installed at various places, and similarly, it can be arranged at an optimum position according to the internal combustion engine, and the gas gas purification efficiency is improved. Also, the exhaust gas purifying catalyst is
The three-dimensional wire structure catalysts 30, 40, and 50 are used, and are cheaper, have lower exhaust gas discharge resistance, and can be used in places with high exhaust gas resistance.
【００１６】図７は排気ガス浄化用触媒をパンチメタル
三次元構造体触媒で構成した実施の形態を示す図であ
る。この実施の形態の排気ガス浄化用触媒は、パンチメ
タル三次元構造体触媒６０で構成される。パンチメタル
三次元構造体触媒６０は、複数の円形板状パンチメタル
６０ａに、複数の軸方向の直線状針金６０ｂを溶接して
構成される。FIG. 7 is a view showing an embodiment in which the exhaust gas purifying catalyst is constituted by a punch metal three-dimensional structure catalyst. The exhaust gas purifying catalyst according to this embodiment is constituted by a punch metal three-dimensional structure catalyst 60. The punch metal three-dimensional structure catalyst 60 is configured by welding a plurality of axial linear wires 60b to a plurality of circular plate-shaped punch metals 60a.
【００１７】このように、排気ガス浄化用触媒を、パン
チメタル三次元構造体触媒６０で構成することで、排気
系８の例えば排気管９の曲がり部９ａの形状に合わせて
直線状針金６０ｂが変形する等いろいろな部分にパンチ
メタル三次元構造体触媒６０を直接溶接して設置でき、
排気系８への設置場所の自由度が向上する。また、排気
系８のいろいろな場所に設置できるようになり、排気ガ
ス浄化効率が向上する。また、排気ガス浄化用触媒を、
パンチメタル三次元構造体触媒６０で構成しており、よ
り安価で排気ガスの排出抵抗も小さくなり、排気ガス抵
抗が大きい場所でも使用できる。As described above, the exhaust gas purifying catalyst is constituted by the punch metal three-dimensional structure catalyst 60, so that the straight wire 60b is formed in accordance with the shape of the bent portion 9a of the exhaust pipe 9 of the exhaust system 8, for example. Punch metal three-dimensional structure catalyst 60 can be directly welded and installed on various parts such as deforming,
The degree of freedom of the installation location in the exhaust system 8 is improved. Further, it can be installed in various places of the exhaust system 8, and the exhaust gas purification efficiency is improved. Also, the exhaust gas purification catalyst
It is constituted by a punched metal three-dimensional structure catalyst 60, is more inexpensive, has lower exhaust gas discharge resistance, and can be used in places where the exhaust gas resistance is higher.
【００１８】[0018]
【発明の効果】前記したように、請求項１記載の発明で
は、排気ガス浄化用触媒を、発泡多孔質三次元構造体触
媒、針金三次元構造体触媒、パンチメタル三次元構造体
触媒のいずれかで構成したから、排気系の例えば排気管
の曲がり部の形状に合わせて変形する等いろいろな部分
に直接設置でき、排気系への設置場所の自由度が向上す
る。また、排気系のいろいろな場所に設置できるように
なり、排気ガス浄化効率が向上する。また、安価で排気
ガスの排出抵抗も小さくなり、排気ガス抵抗が大きい場
所でも使用できる。As described above, according to the first aspect of the present invention, the exhaust gas purifying catalyst may be any one of a foamed porous three-dimensional structure catalyst, a wire three-dimensional structure catalyst, and a punched metal three-dimensional structure catalyst. Therefore, it can be directly installed in various parts of the exhaust system, for example, deformed according to the shape of the bent portion of the exhaust pipe, and the degree of freedom of the installation location in the exhaust system is improved. Further, it can be installed at various places in the exhaust system, and the exhaust gas purification efficiency is improved. Further, it is inexpensive, has low exhaust gas exhaust resistance, and can be used in places where exhaust gas resistance is high.
【図１】内燃機関の排気ガス浄化装置を備える自動二輪
車の側面図である。FIG. 1 is a side view of a motorcycle including an exhaust gas purifying apparatus for an internal combustion engine.
【図２】排気管へ発泡多孔質三次元構造体触媒を配置し
た状態を示す図である。FIG. 2 is a diagram showing a state in which a foamed porous three-dimensional structure catalyst is arranged in an exhaust pipe.
【図３】発泡多孔質三次元構造体触媒の構成を示す模式
図である。FIG. 3 is a schematic diagram showing a configuration of a foamed porous three-dimensional structure catalyst.
【図４】排気管への発泡多孔質三次元構造体触媒の取付
状態を示す図である。FIG. 4 is a view showing a state in which a foamed porous three-dimensional structure catalyst is attached to an exhaust pipe.
【図５】排気ガス浄化用触媒を発泡多孔質三次元構造体
触媒で構成した実施の形態を示す図である。FIG. 5 is a diagram showing an embodiment in which the exhaust gas purifying catalyst is constituted by a foamed porous three-dimensional structure catalyst.
【図６】排気ガス浄化用触媒を針金三次元構造体触媒で
構成した実施の形態を示す図である。FIG. 6 is a view showing an embodiment in which the exhaust gas purifying catalyst is constituted by a wire three-dimensional structure catalyst.
【図７】排気ガス浄化用触媒をパンチメタル三次元構造
体触媒で構成した実施の形態を示す図である。FIG. 7 is a diagram showing an embodiment in which the exhaust gas purifying catalyst is constituted by a punch metal three-dimensional structure catalyst.
３ 内燃機関 ８ 排気系 ２０ 発泡多孔質三次元構造体触媒 ３０，４０，５０ 針金三次元構造体触媒 ６０ パンチメタル三次元構造体触媒 3 Internal combustion engine 8 Exhaust system 20 Foamed porous three-dimensional structure catalyst 30, 40, 50 Wire three-dimensional structure catalyst 60 Punched metal three-dimensional structure catalyst
Claims (1)
を備える内燃機関の排気ガス浄化装置において、前記排
気ガス浄化用触媒を、発泡多孔質三次元構造体触媒、針
金三次元構造体触媒、パンチメタル三次元構造体触媒の
いずれかで構成したことを特徴とする内燃機関の排気ガ
ス浄化装置。1. An exhaust gas purifying apparatus for an internal combustion engine having an exhaust gas purifying catalyst in an exhaust system of the internal combustion engine, wherein the exhaust gas purifying catalyst is a foamed porous three-dimensional structure catalyst, a wire three-dimensional structure. An exhaust gas purifying apparatus for an internal combustion engine, comprising a catalyst or a punch metal three-dimensional structure catalyst.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9019387A JPH10212938A (en) | 1997-01-31 | 1997-01-31 | Exhaust gas emission control device for internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9019387A JPH10212938A (en) | 1997-01-31 | 1997-01-31 | Exhaust gas emission control device for internal combustion engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH10212938A true JPH10212938A (en) | 1998-08-11 |
Family
ID=11997884
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9019387A Pending JPH10212938A (en) | 1997-01-31 | 1997-01-31 | Exhaust gas emission control device for internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH10212938A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015159698A1 (en) * | 2014-04-18 | 2015-10-22 | 株式会社アツミテック | Exhaust gas purification system, catalyst and exhaust gas purification method |
| JP2019105189A (en) * | 2017-12-12 | 2019-06-27 | 株式会社榛葉鉄工所 | Exhaust emission control device and method for manufacturing and installing exhaust emission control device |
-
1997
- 1997-01-31 JP JP9019387A patent/JPH10212938A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015159698A1 (en) * | 2014-04-18 | 2015-10-22 | 株式会社アツミテック | Exhaust gas purification system, catalyst and exhaust gas purification method |
| JP2019105189A (en) * | 2017-12-12 | 2019-06-27 | 株式会社榛葉鉄工所 | Exhaust emission control device and method for manufacturing and installing exhaust emission control device |
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