JPH1030432A - Exhaust emission control device - Google Patents
Exhaust emission control deviceInfo
- Publication number
- JPH1030432A JPH1030432A JP18945596A JP18945596A JPH1030432A JP H1030432 A JPH1030432 A JP H1030432A JP 18945596 A JP18945596 A JP 18945596A JP 18945596 A JP18945596 A JP 18945596A JP H1030432 A JPH1030432 A JP H1030432A
- Authority
- JP
- Japan
- Prior art keywords
- exhaust gas
- catalyst
- gas purifying
- exhaust
- diameter
- 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
Links
Landscapes
- Exhaust Gas After Treatment (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は自動二輪車の内燃機
関等に使用する排気ガス浄化装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an exhaust gas purifying apparatus used for an internal combustion engine of a motorcycle.
【０００２】[0002]
【従来の技術】大気汚染防止を目的として車両に排気ガ
ス浄化装置を搭載する技術が知られており、特開平３−
８５３２０号公報「内燃機関の排気ガス浄化装置」もそ
の１つである。2. Description of the Related Art A technique of mounting an exhaust gas purifying device on a vehicle for the purpose of preventing air pollution is known.
Japanese Patent No. 85320, “Exhaust gas purification device for internal combustion engine” is one of them.
【０００３】この装置は、同公報の第１図に示される通
り、パンチングで複数の小孔を明けた内管５を排気管３
内に配置し、この内管５に触媒を担持して排気ガス中の
未燃成分を酸化させるものである。[0003] As shown in Fig. 1 of the publication, this apparatus uses an inner pipe 5 having a plurality of small holes formed by punching and an exhaust pipe 3.
The inner tube 5 carries a catalyst to oxidize unburned components in the exhaust gas.
【０００４】[0004]
【発明が解決しようとする課題】この排気管３は、第６
図に示すように略Ｃ字型に曲げ形成したエキゾーストパ
イプ（即ち、ベンド管）であり、触媒を担持した内管５
を内蔵したものである。排気管３に内管５を内蔵した理
由は、内管５に担持した触媒に、高温の排気ガスを反応
させて排気ガスの浄化性能を高く保つためである。しか
し、このようにすると、排気口２に近い部位にパンチン
グ孔を備えた内管５が配置される関係上、パンチング孔
で排気ガスの流れに乱れが生じ、エンジンの出力特性に
大きく影響を及ぼし、出力低下を招くことにもなる。The exhaust pipe 3 is provided in the sixth
As shown in the figure, it is an exhaust pipe (that is, a bend pipe) bent and formed into a substantially C-shape, and an inner pipe 5 supporting a catalyst.
Is built-in. The reason why the inner pipe 5 is built in the exhaust pipe 3 is to make the catalyst carried on the inner pipe 5 react with high-temperature exhaust gas to keep the exhaust gas purification performance high. However, in this case, since the inner pipe 5 having the punching hole is disposed near the exhaust port 2, the flow of the exhaust gas is disturbed by the punching hole, and greatly affects the output characteristics of the engine. In addition, the output may be reduced.
【０００５】そこで、本発明の目的は、触媒を効率よく
反応させて排気ガスの浄化性能を高く保ち、かつエンジ
ンの出力特性に影響を与えない排気ガス浄化装置を提供
することにある。SUMMARY OF THE INVENTION It is an object of the present invention to provide an exhaust gas purifying apparatus which can efficiently react a catalyst to maintain high exhaust gas purifying performance and does not affect the output characteristics of an engine.
【０００６】[0006]
【課題を解決するための手段】上記目的を達成するため
に本発明の請求項１は、筒状に形成するとともに触媒を
担持した小径及び大径の排気ガス浄化装置を排気管のエ
キパイ部後部より膨張室に渡って直列に配置し、且つ前
記小径の排気ガス浄化装置に大径の排気ガス浄化装置を
オーバーラップさせ、前記大径の排気ガス浄化装置のオ
ーバーラップ部に補強リングを付設したことを特徴とす
る。In order to achieve the above object, a first aspect of the present invention is to provide a small-diameter and large-diameter exhaust gas purifying device which is formed in a tubular shape and carries a catalyst. The large-diameter exhaust gas purifier was arranged in series with the expansion chamber over the expansion chamber, and the large-diameter exhaust gas purifier was overlapped with the small-diameter exhaust gas purifier, and a reinforcing ring was attached to the overlap portion of the large-diameter exhaust gas purifier. It is characterized by the following.
【０００７】２つの排気ガス浄化装置を排気管のエキパ
イ部後部より膨張室に渡って直列に配置する構成とした
ので、各排気ガス浄化装置はエキパイ部前部の排気口に
近い位置で排気ガスの乱れをおこさない。従って、エン
ジンの出力特性に影響が及ぶ心配はない。Since the two exhaust gas purifying devices are arranged in series from the rear part of the exhaust pipe to the expansion chamber, each exhaust gas purifying device is located at a position near the exhaust port at the front part of the exhaust pipe. Do not cause disturbance. Therefore, there is no fear that the output characteristics of the engine are affected.
【０００８】また、１段目の排気ガス浄化装置で酸化反
応させ、引続き２段目の排気ガス浄化装置で酸化反応を
連続的に実施させるようにしたので、排気ガスの温度が
低くなる位置に触媒を配置しても、２段目の排気ガス浄
化装置を触媒が効率よく反応する温度まで加熱でき、排
気ガス中の未燃焼成分を効率よく酸化して無害成分に転
換できる。Further, the oxidation reaction is performed by the first-stage exhaust gas purifier, and the oxidation reaction is continuously performed by the second-stage exhaust gas purifier. Even if a catalyst is provided, the second-stage exhaust gas purifying device can be heated to a temperature at which the catalyst efficiently reacts, and the unburned components in the exhaust gas can be efficiently oxidized and converted to harmless components.
【０００９】さらに、仮に、大径の排気ガス浄化装置が
熱変形により楕円になると、内側の小径の排気ガス浄化
装置に接触する虞がある。そこで、大径の排気ガス浄化
装置のオーバーラップ部に補強リングを付設して、不都
合な変形を抑えるようにし、排気ガス浄化装置の性能を
維持するようにした。Further, if the large-diameter exhaust gas purifying device becomes elliptical due to thermal deformation, there is a possibility that the large-diameter exhaust gas purifying device may come into contact with the inside small-diameter exhaust gas purifying device. Therefore, a reinforcement ring is attached to the overlap portion of the large-diameter exhaust gas purifying device to suppress undesired deformation and maintain the performance of the exhaust gas purifying device.
【００１０】請求項２は、パンチングメタルで筒状に形
成するとともに触媒を担持した小径及び大径の排気ガス
浄化装置を排気管のエキパイ部後部より膨張室に渡って
直列に配置し、且つ前記小径の排気ガス浄化装置に大径
の排気ガス浄化装置をオーバーラップさせ、前記オーバ
ーラップ部におけるパンチング孔の密度を他の部分より
粗くしたことを特徴とする。According to a second aspect of the present invention, a small-diameter and a large-diameter exhaust gas purifying device, which is formed of a punching metal in a cylindrical shape and carries a catalyst, is arranged in series from the rear part of the exhaust pipe of the exhaust pipe to the expansion chamber. The large-diameter exhaust gas purifying device is overlapped with the small-diameter exhaust gas purifying device, and the density of the punched holes in the overlap portion is made coarser than other portions.
【００１１】２つの排気ガス浄化装置を排気管のエキパ
イ部後部より膨張室に渡って直列に配置する構成とした
ので、各排気ガス浄化装置はエキパイ部前部の排気口に
近い位置で排気ガスの乱れをおこさない。従って、エン
ジンの出力特性に影響が及ぶ心配はない。Since the two exhaust gas purifying devices are arranged in series from the rear portion of the exhaust pipe in the exhaust pipe to the expansion chamber, each exhaust gas purifying device is located at a position close to the exhaust port at the front portion of the exhaust pipe. Do not cause disturbance. Therefore, there is no fear that the output characteristics of the engine are affected.
【００１２】また、１段目の排気ガス浄化装置で酸化反
応させ、引続き２段目の排気ガス浄化装置で酸化反応を
連続的に実施させるようにしたので、排気ガスの温度が
低くなる位置に触媒を配置しても、２段目の排気ガス浄
化装置を触媒が効率よく反応する温度まで加熱でき、排
気ガス中の未燃焼成分を効率よく酸化して無害成分に転
換できる。Further, the oxidation reaction is performed by the first-stage exhaust gas purifier, and the oxidation reaction is continuously performed by the second-stage exhaust gas purifier. Even if a catalyst is provided, the second-stage exhaust gas purifying device can be heated to a temperature at which the catalyst efficiently reacts, and the unburned components in the exhaust gas can be efficiently oxidized and converted to harmless components.
【００１３】さらに、仮に、大径の排気ガス浄化装置が
熱変形により楕円になると、内側の小径の排気ガス浄化
装置に接触する虞がある。そこで、大径の排気ガス浄化
装置のオーバーラップ部におけるパンチング孔の密度を
他の部分より粗くして、不都合な変形を抑えるように
し、排気ガス浄化装置の性能を維持するようにした。Further, if the large-diameter exhaust gas purifying device becomes elliptical due to thermal deformation, there is a possibility that the large-diameter exhaust gas purifying device may come into contact with the inner small-diameter exhaust gas purifying device. Therefore, the density of the punched holes in the overlap portion of the large-diameter exhaust gas purifying device is made coarser than other portions so as to suppress undesired deformation and maintain the performance of the exhaust gas purifying device.
【００１４】[0014]
【実施の形態】本発明の実施の形態を添付図に基づいて
以下に説明する。なお、図面は符号の向きに見るものと
する。図１は本発明に係る排気ガス浄化装置を備えた自
動二輪車の側面図であり、自動二輪車１はメインフレー
ム２の前部にヘッドパイプ３を介してフロントフォーク
４を軸支し、このフロントフォーク４に前輪５、フロン
トフェンダ６を取付け、メインフレーム２の下方にエン
ジンハンガー部７，７を介して２サイクルエンジン８を
取付け、この２サイクルエンジン８から排気管５０を延
出し、更にメインフレーム２の後端部のピボット９を介
して片持ちのスイングアーム１１を軸支し、このスイン
グアーム１１に後輪１２を取付けてなる。Embodiments of the present invention will be described below with reference to the accompanying drawings. The drawings should be viewed in the direction of reference numerals. FIG. 1 is a side view of a motorcycle provided with an exhaust gas purifying apparatus according to the present invention. The motorcycle 1 pivotally supports a front fork 4 via a head pipe 3 at a front portion of a main frame 2. 4, a front wheel 5 and a front fender 6 are attached, a two-cycle engine 8 is attached below the main frame 2 via engine hangers 7, 7, and an exhaust pipe 50 extends from the two-cycle engine 8. A cantilevered swing arm 11 is pivotally supported via a pivot 9 at the rear end of the vehicle, and a rear wheel 12 is attached to the swing arm 11.
【００１５】図中、１４は燃料タンク、１５はエアクリ
ーナ、１６は気化器、１７はシート、１８，１９はシー
トレール、２０は同乗者用シート、２１はリアサスペン
ション、２２はドライブチェーン、２３はサイレンサで
ある。また、２５はメータ、２６はヘッドライト、２７
はカウリング２８の前部の左右の開口部に設けたウイン
カー、３０はブレーキディスク、３１はキャリパー、３
２はラジエータ、３３はエンジン８の排気口上縁に設け
られる排気タイミング制御バルブの駆動用プーリ、３４
は排気タイミング制御バルブの駆動モータ、３５は吸気
チャンバ、３６はバッテリ、３７はオイルタンク、３８
はテールライト、３９はシートカウル、４０はリヤアク
スルである。In the figure, 14 is a fuel tank, 15 is an air cleaner, 16 is a carburetor, 17 is a seat, 18 and 19 are seat rails, 20 is a passenger seat, 21 is a rear suspension, 22 is a drive chain, and 23 is a drive chain. It is a silencer. 25 is a meter, 26 is a headlight, 27
Are blinkers provided at the left and right openings at the front of the cowling 28, 30 is a brake disc, 31 is a caliper, 3
2 is a radiator, 33 is a pulley for driving an exhaust timing control valve provided on the upper edge of the exhaust port of the engine 8, 34
Is a drive motor of an exhaust timing control valve, 35 is an intake chamber, 36 is a battery, 37 is an oil tank, 38
Is a tail light, 39 is a seat cowl, and 40 is a rear axle.
【００１６】図２は本発明に係る排気ガス浄化装置を備
えた自動二輪車の平面図であり、排気管５０は車体中央
から後方へ延出したのち、リアサスペンション２１及び
片持ちのスイングアーム１１を迂回し、乗員から見て車
体右側を後方へ伸びる。図中、４２，４２はライダ用ス
テップ、４３はブレーキペダル、４４はチェンジペダ
ル、４５はステアリングハンドルである。FIG. 2 is a plan view of a motorcycle provided with the exhaust gas purifying apparatus according to the present invention. After the exhaust pipe 50 extends rearward from the center of the vehicle body, the rear suspension 21 and the cantilevered swing arm 11 are connected. Make a detour and extend to the rear on the right side of the vehicle as viewed from the occupants. In the drawing, 42 and 42 are rider steps, 43 is a brake pedal, 44 is a change pedal, and 45 is a steering handle.
【００１７】図３は本発明に係る排気ガス浄化装置を備
えた排気管の側面図である。図１で述べた排気管５０
は、排気ガス浄化装置６０を内蔵し、曲り管状のエキパ
イ部５１と膨張室５２とテールパイプ部５６とを備え
る。膨張室５２は、ガスの流れ方向に流路断面積が徐々
に増加するダイバー部５３と、同断面積がほぼ一定のス
トレート部５４と、同断面積が徐々に減少するコンバー
部５５とからなる。ダイバー部５３は、二点鎖線で示す
如くエキパイ部５１の後部より形成しても良い。排気ガ
ス浄化装置６０は図４で説明する。なお、前記エキパイ
はエキゾーストパイプの略称であるが、ここでは排気管
全体ではなくエンジン直下の曲り管のみを指す。ダイバ
ーはダイバージェントの略称、コンバーはコンバージェ
ントの略称である。５８は吊り金具である。FIG. 3 is a side view of an exhaust pipe provided with the exhaust gas purifying apparatus according to the present invention. Exhaust pipe 50 described in FIG.
Has a built-in exhaust gas purification device 60, and includes a bent tubular exhaust portion 51, an expansion chamber 52, and a tail pipe portion 56. The expansion chamber 52 includes a diver 53 having a gradually increasing cross-sectional area in the gas flow direction, a straight section 54 having a substantially constant cross-sectional area, and a conver section 55 having a gradually decreasing cross-sectional area. The diver portion 53 may be formed from the rear of the exhaust portion 51 as shown by a two-dot chain line. The exhaust gas purifying device 60 will be described with reference to FIG. Note that the exhaust pipe is an abbreviation for an exhaust pipe, but here indicates only a bent pipe immediately below the engine, not the entire exhaust pipe. Diver is an abbreviation for divergent, and conver is an abbreviation for convergent. Reference numeral 58 denotes a hanging bracket.
【００１８】図４は本発明に係る排気ガス浄化装置の要
部断面図である。排気ガス浄化装置６０は、エキパイ部
５１の後端に配置した小径の第１の触媒付き筒部材（小
径の排気ガス浄化装置）６１と、膨張室５２に配置した
大径の第２の触媒付き筒部材（大径の排気ガス浄化装
置）７１とからなり、第１の触媒付き筒部材６１と第２
の触媒付き筒部材７１とを排気管５０のエキパイ部５１
の後部から膨張室５２に渡って直列に、かつ略直線上に
配置したものである。第２の触媒付き筒部材７１は、前
端部を第１の触媒付き筒部材６１の後端部にオーバラッ
プしたものである。そして、第１、第２の触媒付き筒部
材６１，７１のオーバーラップした部分（以下、「オー
バーラップ部」と呼ぶ。）９４は、パンチング孔の密度
を他の部分より粗くした領域である。FIG. 4 is a sectional view of a main part of an exhaust gas purifying apparatus according to the present invention. The exhaust gas purifying device 60 includes a small-diameter first catalyst-equipped tubular member (small-diameter exhaust gas purifying device) 61 disposed at the rear end of the exhaust portion 51 and a large-diameter second catalyst disposed in the expansion chamber 52. A first cylindrical member 61 with a catalyst and a second cylindrical member (large-diameter exhaust gas purifying device) 71;
Of the exhaust pipe 50 of the exhaust pipe 50
Are arranged in series from the rear part to the expansion chamber 52 and on a substantially straight line. The second catalyzed tubular member 71 has a front end overlapping the rear end of the first catalyzed tubular member 61. The overlapping portion 94 of the first and second catalyzed tubular members 61 and 71 (hereinafter, referred to as “overlap portion”) is a region in which the density of the punching holes is higher than the other portions.
【００１９】すなわち、第１の触媒付き筒部材６１のオ
ーバーラップ部９４は、低密度孔あり部１０３及び孔な
し部１０１ｂの領域であり、第２の触媒付き筒部材７１
のオーバーラップ部９４は、低密度孔あり部８７及び孔
なし部８５ａの領域である。また、第２の触媒付き筒部
材７１はオーバーラップ部９４の孔なし部８５ａに補強
リング９３を嵌め込こんだものである。前記孔なし部１
０１ｂ，８５ａはパンチング孔のない領域で、前記低密
度孔あり部１０３，８７はパンチング孔の密度を他の部
分より粗くした領域である。That is, the overlap portion 94 of the first catalyzed tubular member 61 is a region of the low-density hole portion 103 and the non-perforated portion 101b, and the second catalyzed tubular member 71 is provided.
The overlap portion 94 is a region of the low density hole portion 87 and the holeless portion 85a. The second tubular member with catalyst 71 has a reinforcing ring 93 fitted into the non-hole portion 85a of the overlap portion 94. The holeless part 1
Reference numerals 01b and 85a denote regions having no punched holes, and the low-density hole portions 103 and 87 are regions where the density of the punched holes is made coarser than other portions.
【００２０】前記補強リング９３として第２の触媒付き
筒部材７１のオーバーラップ部９４に嵌め込む部材を使
用したが、その他の部材としては、例えば第２の触媒付
き筒部材７１に巻回する部材や、第２の触媒付き筒部材
７１の外周に形成した凸条部材を補強リングとしてもよ
い。また、上流側に小径の第１の触媒付き筒部材６１を
配置し、下流側に大径の第２の触媒付き筒部材７１を配
置したが、上流側に大径の第２の触媒付き筒部材７１を
配置し、下流側に小径の第１の触媒付き筒部材６１を配
置することも可能である。Although a member to be fitted into the overlap portion 94 of the second catalyzed tubular member 71 is used as the reinforcing ring 93, other members such as a member wound around the second catalyzed tubular member 71 may be used. Alternatively, a ridge member formed on the outer periphery of the second catalyzed tubular member 71 may be used as a reinforcing ring. Also, the small-diameter first catalyzed cylinder member 61 is arranged on the upstream side and the large-diameter second catalyzed cylinder member 71 is arranged on the downstream side, but the large-diameter second catalyzed cylinder member is arranged on the upstream side. It is also possible to dispose the member 71 and dispose the small-diameter first cylindrical member with catalyst 61 on the downstream side.
【００２１】図５は図４の５−５線断面図であり、第１
の触媒付き筒部材６１を支持する支持ステーの構成を示
す。支持ステー６２は、Ｗ字状のサポート金具６３と、
このサポート金具６３に溶接するアウタリング６４とか
らなり、このアウタリング６４は組立ての都合で上下に
２分割したものである。このアウタリング６４とインナ
リング１０９（図６も参照）との間に環状の弾性材６５
を備える。弾性材６５は、前記弾性材７５と同様に、耐
熱性及びクッション性を備えたステンレスウールが好適
である。FIG. 5 is a sectional view taken along the line 5-5 in FIG.
The structure of the support stay which supports the cylindrical member 61 with a catalyst of FIG. The support stay 62 includes a W-shaped support bracket 63,
An outer ring 64 is welded to the support fitting 63. The outer ring 64 is vertically divided into two parts for convenience of assembly. An annular elastic member 65 is provided between the outer ring 64 and the inner ring 109 (see also FIG. 6).
Is provided. The elastic material 65 is preferably made of stainless steel wool having heat resistance and cushioning properties, similarly to the elastic material 75.
【００２２】エキパイ部５１は右側半割円筒５１Ｒと左
側半割円筒５１Ｌとを合せてなり、右側半割円筒５１Ｒ
は支持ステー６２のサポート金具６３を溶接にて止める
部材である。支持ステー６２は、第１の触媒付き筒部材
６１をエキパイ部５１の断面略中央に支持する部材であ
る。The exhaust pipe portion 51 is formed by combining a right half cylinder 51R and a left half cylinder 51L, and a right half cylinder 51R.
Is a member for stopping the support bracket 63 of the support stay 62 by welding. The support stay 62 is a member that supports the first catalyst-equipped tubular member 61 at substantially the center of the cross section of the exhaust portion 51.
【００２３】図６は本発明に係る第１の触媒付き筒部材
の側面図である。第１の触媒付き筒部材６１は、触媒を
担持させたパンチングメタルを筒状に形成して端部１０
５，１０６を突合せ、突合せ部を溶接したものである。
この第１の触媒付き筒部材６１は、中央のインナリング
１０９，１０９が嵌入する領域１０１ａ及び右端部の領
域１０１ｂを孔なし部とし、また、端部１０５，１０６
の突合せ溶接部１０７に沿った一定幅の領域を孔なし部
１０１ｃ，１０１ｃとしたものである。FIG. 6 is a side view of a first tubular member with a catalyst according to the present invention. The first catalyst-attached cylindrical member 61 is formed by forming a punched metal supporting a catalyst into a cylindrical shape and forming an end portion 10.
5,106 were butted and the butted portions were welded.
The first catalyst-equipped tubular member 61 has a region 101a in which the inner rings 109, 109 in the center are fitted and a region 101b at the right end without holes, and ends 105, 106.
A region having a constant width along the butt weld 107 is formed as the holesless portions 101c, 101c.
【００２４】第１の触媒付き筒部材６１は、孔なし部１
０１ａ，１０１ｂにつながる縁部を低密度孔あり部１０
３…（…は複数を示す。以下同様。）とし、それ以外の
部分を孔あり部１０２ａ，１０２ｂとしたものである。
孔なし部１０１ａ，１０１ｂ，１０１ｃ，１０１ｃはパ
ンチング孔９０…のない領域であり、低密度孔あり部１
０３…は低密度（即ち、「粗」の状態）にパンチング孔
９０…を明けた領域である。孔あり部１０２ａ，１０２
ｂは比較的高密度にパンチング孔９０…を明けた領域で
ある。白抜き矢印は排気ガスの流れ方向を示す。The first catalyst-equipped tubular member 61 is provided with
01a and 101b are connected to the low density hole portion 10
(... denotes a plurality; the same applies hereinafter), and the other portions are the perforated portions 102a and 102b.
The non-perforated portions 101a, 101b, 101c, and 101c are regions having no punching holes 90.
03 are regions where punching holes 90 are formed in a low density (that is, in a “rough” state). Perforated portions 102a, 102
b is a region where punching holes 90 are formed at a relatively high density. The white arrow indicates the flow direction of the exhaust gas.
【００２５】図７は図４の７−７線断面図であり、第２
の触媒付き筒部材７１を支持する前部支持ステーの構成
を示す。前部支持ステー７２Ｆは、Ｗ字状サポート金具
７３Ｆと、このサポート金具７３Ｆに溶接するアウタリ
ング７４とからなり、このアウタリング７４は組立ての
都合で左右に２分割したものである。このアウタリング
７４とインナリング９２との間には環状の弾性材７５を
備える。弾性材７５は耐熱性及びクッション性を備えた
ステンレスウールが好適である。FIG. 7 is a sectional view taken along line 7-7 of FIG.
The structure of the front support stay that supports the catalyst-equipped tubular member 71 is shown. The front support stay 72F includes a W-shaped support bracket 73F and an outer ring 74 that is welded to the support bracket 73F. The outer ring 74 is divided into two parts for convenience of assembly. An annular elastic member 75 is provided between the outer ring 74 and the inner ring 92. The elastic material 75 is preferably made of stainless wool having heat resistance and cushioning properties.
【００２６】膨張室５２は、上側分割管体５２Ｔと下側
分割管体５２Ｂとを合せてなり、上側分割管体５２Ｔに
のみ前部支持ステー７２ＦのＷ字状サポート金具７３Ｆ
を溶接にて止める部材である。上側分割管体５２Ｔに前
部支持ステー７２ＦのＷ字状サポート金具７３Ｆを溶接
することにより、前部支持ステー７２Ｆは、第２の触媒
付き筒部材７１を膨張室５２の断面略中央に支持する部
材である。The expansion chamber 52 is formed by combining an upper divided pipe 52T and a lower divided pipe 52B. Only the upper divided pipe 52T has a W-shaped support bracket 73F of a front support stay 72F.
Is a member that stops by welding. By welding the W-shaped support fitting 73F of the front support stay 72F to the upper divided pipe body 52T, the front support stay 72F supports the second catalyzed tubular member 71 at substantially the center of the cross section of the expansion chamber 52. It is a member.
【００２７】図８は図４の８−８線断面図であり、第２
の触媒付き筒部材７１を支持する後部支持ステーの構成
を示す。後部支持ステー７２Ｒは、上記前部支持ステー
７２Ｆと比較してＷ字状サポート金具７３Ｒの形状が若
干異なるだけで、基本的には前部支持ステー７２Ｆと同
構造であるから同一符号を付して説明を省略する。FIG. 8 is a sectional view taken along line 8-8 of FIG.
The structure of the rear support stay that supports the catalyst-equipped tubular member 71 is shown. The rear support stay 72R is basically the same in structure as the front support stay 72F, except that the shape of the W-shaped support bracket 73R is slightly different from that of the front support stay 72F. The description is omitted.
【００２８】図９は本発明に係る第２の触媒付き筒部材
の側面図である。第２の触媒付き筒部材７１は、触媒を
担持させたパンチングメタルを筒状に形成して端部８
１，８２を突合せ、突合せ部を溶接したものである。第
２の触媒付き筒部材７１は、左端部の補強リング９３、
中央のインナリング９２及び右端部のインナリング９２
が嵌入するそれぞれの領域８５ａ，８５ｂ，８５ｃを孔
なし部とし、また端部８１，８２を溶接した突合せ溶接
部９１に沿った一定幅の領域を孔なし部８５ｄ，８５ｄ
としたものである。FIG. 9 is a side view of a second cylindrical member with a catalyst according to the present invention. The second cylindrical member with catalyst 71 is formed by forming a punching metal supporting a catalyst into a cylindrical shape and forming an end 8.
1, 82 were butted and the butted portions were welded. The second catalyzed tubular member 71 includes a reinforcing ring 93 at the left end,
Inner ring 92 at center and inner ring 92 at right end
Each of the regions 85a, 85b, and 85c into which holes are fitted is a holeless portion, and a region having a fixed width along the butt welded portion 91 to which the ends 81 and 82 are welded is a holeless portion 85d, 85d.
It is what it was.
【００２９】第２の触媒付き筒部材７１は、孔なし部８
５ａ，８５ｂ，８５ｃにつながる縁部を低密度孔あり部
８７…とし、それ以外の部分を孔あり部８６ａ，８６ｂ
としたものである。孔なし部８５ａ，８５ｂ，８５ｃ，
８５ｄ，８５ｄはパンチング孔９０…のない領域であ
り、低密度孔あり部８７…は低密度にパンチング孔９０
…を明けた領域である。孔あり部８６ａ，８６ｂは比較
的高密度にパンチング孔９０…を明けた領域である。な
お、上述した補強リング９３は、触媒付き筒部材７１を
排気ガスで加熱した時に触媒付き筒部材７１の左端部に
発生する熱変形を抑える部材である。白抜き矢印は排気
ガスの流れ方向を示す。The second catalyst-equipped tubular member 71 is provided with a holeless portion 8.
The edges connected to 5a, 85b, 85c are low-density holes 87, and the other portions are holes 86a, 86b.
It is what it was. Holeless portions 85a, 85b, 85c,
85d, 85d are areas without the punching holes 90, and the low-density hole portions 87,.
This is the area where ... has been opened. The perforated portions 86a and 86b are regions where punching holes 90 are formed at relatively high density. The above-described reinforcing ring 93 is a member that suppresses thermal deformation generated at the left end of the catalyzed tubular member 71 when the catalyzed tubular member 71 is heated by exhaust gas. The white arrow indicates the flow direction of the exhaust gas.
【００３０】第１の触媒付き筒部材７１の製造工程を図
１０→図６→図５→図４の順に説明する。図１０は本発
明に係る排気ガス浄化装置の第１製造説明図であり、第
１の触媒付き筒部材６１を製造するパンチングメタル１
００を示す。先ず、矩形のパンチングメタル１００の所
定区域に複数のパンチング孔９０…を低密度や高密度の
状態にパンチング加工し、パンチングメタル１００に孔
なし部１０１ａ，１０１ｂ，１０１ｃ，１０１ｃと、低
密度孔あり部１０３…と、孔あり部１０２ａ，１０２ｂ
とを備える。The manufacturing process of the first catalyst-added cylindrical member 71 will be described in the order of FIG. 10 → FIG. 6 → FIG. 5 → FIG. FIG. 10 is a first manufacturing explanatory view of an exhaust gas purifying apparatus according to the present invention, and shows a punching metal 1 for manufacturing a first catalyst-added cylindrical member 61.
00 is shown. First, a plurality of punching holes 90 are punched in a predetermined area of a rectangular punching metal 100 into a low-density or high-density state, and the punching metal 100 has holes 101a, 101b, 101c, 101c and low-density holes. Part 103 ... and perforated parts 102a, 102b
And
【００３１】孔なし部１０１ａ，１０１ｂ，１０１ｃ，
１０１ｃ，１０１ｃは、パンチングメタル１００の中央
部、右端部及び上下端部に設けてある。低密度孔あり部
１０３…は、孔あり部１０２ａ，１０２ｂの周囲に設け
てある。The non-hole portions 101a, 101b, 101c,
101c, 101c are provided at the center, the right end, and the upper and lower ends of the punching metal 100. The low-density holes 103 are provided around the holes 102a and 102b.
【００３２】次に、パンチングメタル１００を丸め、図
６に示すように端部１０５と端部１０６とを突合せ溶接
して第１の筒部材６１ａを形成する。次に、第１の筒部
材６１ａの内外周面に活性アルミナを薄く成膜し、この
活性アルミナ層に触媒成分を担持して第２の触媒付き筒
部材６１を得る。次いで、第１の触媒付き筒部材６１の
左側孔なし部１０１ａにインナリング１０９，１０９を
配置して溶接する。Next, the punching metal 100 is rounded, and the end portion 105 and the end portion 106 are butt-welded as shown in FIG. 6 to form a first tubular member 61a. Next, a thin film of activated alumina is formed on the inner and outer peripheral surfaces of the first cylindrical member 61a, and a catalyst component is carried on the activated alumina layer to obtain the second cylindrical member 61 with a catalyst. Next, the inner rings 109, 109 are arranged and welded to the left-side holeless portion 101a of the first catalyst-added tubular member 61.
【００３３】続いて、図５に示すようにインナリング１
０９，１０９（一方のみ図示する）に耐熱性の弾性材６
５，６５を嵌合し、弾性材６５，６５を２つ割りのアウ
タリング６４で抑える。次いで、アウタリング６４，６
４をサポート金具６３でエキパイ部５１内に第１の触媒
付き筒部材６１を配置する（図４参照）。Subsequently, as shown in FIG.
09 and 109 (only one is shown) are heat-resistant elastic material 6
5 and 65 are fitted, and the elastic members 65 and 65 are held down by a split outer ring 64. Next, the outer rings 64, 6
Then, the first cylindrical member 61 with catalyst is disposed in the exhaust portion 51 with the support fitting 63 (see FIG. 4).
【００３４】次に、第２の触媒付き筒部材７１の製造工
程を図１１→図１２→図９→図６→図７→図４の順に説
明する。図１１は本発明に係る排気ガス浄化装置の第２
製造説明図であり、第２の触媒付き筒部材７１を形成す
るパンチングメタル８０を示す。先ず、矩形のパンチン
グメタル８０の所定区域に複数のパンチング孔９０…を
低密度や高密度の状態にパンチング加工し、パンチング
メタル８０に孔なし部８５ａ，８５ｂ，８５ｃ，８５
ｄ，８５ｄと、低密度孔あり部８７…、孔あり部８６
ａ，８６ｂとを備える。Next, the steps of manufacturing the second tubular member with catalyst 71 will be described in the order of FIG. 11 → FIG. 12 → FIG. 9 → FIG. 6 → FIG. 7 → FIG. FIG. 11 shows a second example of the exhaust gas purifying apparatus according to the present invention.
It is a manufacturing explanatory view and shows a punching metal 80 forming a second cylindrical member with catalyst 71. First, a plurality of punching holes 90 are punched in a predetermined area of the rectangular punching metal 80 into a low density or high density state, and the punching metal 80 has no holes 85a, 85b, 85c, 85.
d, 85d, low-density hole portion 87, hole portion 86
a, 86b.
【００３５】孔なし部８５ａ〜８５ｄは、それぞれパン
チングメタル８０の左端部、中央部、右端部及び上下端
部に設けてある。低密度孔あり部８７…は、孔あり部８
６ａ，８６ｂにつながる上下左右の縁部に設けてある。The holeless portions 85a to 85d are provided at the left end, the center, the right end, and the upper and lower ends of the punching metal 80, respectively. The low-density hole portion 87...
It is provided on the upper, lower, left and right edges connecting to 6a and 86b.
【００３６】図１２は本発明に係る排気ガス浄化装置の
第３製造説明図であり、第２の触媒付き筒部材７１を筒
形に丸めた状態を示す。図１１で説明した矩形のパンチ
ングメタル８０を丸め、上端部８１と下端部８２とを突
合せ溶接して第２の筒部材７１ａを形成する。次に、第
２の筒部材７１ａの内外周面に活性アルミナを薄く成膜
し、この活性アルミナ層に触媒成分を担持して第２の触
媒付き筒部材７１を得る。FIG. 12 is a third explanatory view of the manufacture of the exhaust gas purifying apparatus according to the present invention, and shows a state in which the second catalyst-equipped cylindrical member 71 is rounded into a cylindrical shape. The rectangular punching metal 80 described in FIG. 11 is rounded, and the upper end portion 81 and the lower end portion 82 are butt-welded to form the second tubular member 71a. Next, a thin film of activated alumina is formed on the inner and outer peripheral surfaces of the second cylindrical member 71a, and a catalyst component is carried on the activated alumina layer to obtain the second cylindrical member with catalyst 71.
【００３７】次いで、第２の触媒付き筒部材７１の中央
の孔なし部８５ｂと右端部の孔なし部８５ｃにインナリ
ング９２，９２を被せ、中央のインナリング９２の切欠
底部９２ａと第２の触媒付き筒部材７１とを溶接する。
９２ｂ，９２ｂはインナリング９２，９２の突合せ溶接
部である。続いて、第２の触媒付き筒部材７１の左端部
の孔なし部８５ａに補強リング９３を被せ、第２の触媒
付き筒部材７１の左端部と補強リング９３の左端部とを
溶接する。Next, inner rings 92, 92 are put on the central holeless portion 85b and the right-side holeless portion 85c of the second catalyst-equipped tubular member 71, and the notch bottom 92a of the central inner ring 92 and the second inner ring 92 are formed. The tubular member 71 with the catalyst is welded.
Reference numerals 92b and 92b denote butt-welded portions of the inner rings 92 and 92. Subsequently, the reinforcing ring 93 is put on the holeless portion 85a at the left end of the second tubular member with catalyst 71, and the left end of the second tubular member with catalyst 71 and the left end of the reinforcing ring 93 are welded.
【００３８】上述した製造工程の結果、図９に示すよう
に第２の触媒付き筒部材７１の孔なし部８５ａ，８５
ｂ，８５ｃに、それぞれ補強リング９３、インナリング
９２，９２を配置した状態となる。As a result of the above-mentioned manufacturing process, as shown in FIG.
In this state, the reinforcing ring 93 and the inner rings 92, 92 are arranged at b and 85c, respectively.
【００３９】次に、図６、図７に示すようにインナリン
グ９２，９２に耐熱性の弾性材７５，７５を嵌合し、弾
性材７５，７５を２つ割りのアウタリング７４，７４で
抑える。次いで、サポート金具７３Ｆ，７３Ｒを膨張室
５２内に溶接して、膨張室５２内に第２の触媒付き筒部
材７１を配置する（図４参照）。Next, as shown in FIGS. 6 and 7, heat-resistant elastic members 75, 75 are fitted to the inner rings 92, 92, and the elastic members 75, 75 are divided by two outer rings 74, 74. suppress. Next, the support fittings 73F and 73R are welded into the expansion chamber 52, and the second catalyst-added tubular member 71 is disposed in the expansion chamber 52 (see FIG. 4).
【００４０】次に、本発明に係る排気ガス浄化装置６０
の作用を説明する。図４に示す排気管５０のエキパイ部
５１内に入った（白抜き矢印は排気ガスの流れ方向を示
す）排気ガスは、第１の触媒付き筒部材６１及び第２の
触媒付き筒部材７１の内外を通過する。Next, the exhaust gas purifying apparatus 60 according to the present invention will be described.
The operation of will be described. Exhaust gas that has entered the exhaust portion 51 of the exhaust pipe 50 shown in FIG. 4 (open arrows indicate the flow direction of the exhaust gas) is supplied to the first catalyst-added cylinder member 61 and the second catalyst-added cylinder member 71. Pass inside and outside.
【００４１】ここで、第１の触媒付き筒部材６１と第２
の触媒付き筒部材７１とを、排気管５０のエキパイ部５
１の後部から膨張室５２に渡って直列に、かつ略直線上
に配置した。従って、各触媒付き筒部材６１，７１は排
気口（図３のエキパイ部５１の前部）に近い位置で排気
ガスの乱れをおこさない。これにより、エンジンの出力
特性に影響が及ばない。Here, the first tubular member with catalyst 61 and the second
Of the exhaust pipe 50 of the exhaust pipe 50
1 from the rear to the expansion chamber 52 in series and on a substantially straight line. Therefore, the catalyst-equipped tubular members 61 and 71 do not disturb the exhaust gas at a position near the exhaust port (the front part of the exhaust section 51 in FIG. 3). This does not affect the output characteristics of the engine.
【００４２】また、第１の触媒付き筒部材６１の後端部
と第２の触媒付き筒部材７１の前端部とをオーバーラッ
プさせたので、第１の触媒付き筒部材６１で酸化反応さ
せ、引つづき第２の触媒付き筒部材７１で酸化反応を連
続的に実施させた。従って、第２の触媒付き筒部材７１
を排気ガスの温度が低くなる位置に配置しても、第２の
触媒付き筒部材７１の触媒が効率よく反応する温度まで
加熱でき、排気ガス中の未燃焼成分を効率よく酸化して
無害成分に転換できる。Also, since the rear end of the first catalyzed cylinder member 61 and the front end of the second catalyzed cylinder member 71 are overlapped, the first catalyzed cylinder member 61 causes an oxidation reaction. Subsequently, the oxidation reaction was continuously performed by the second catalyst-attached cylinder member 71. Accordingly, the second tubular member with catalyst 71
Can be heated to a temperature at which the catalyst of the second catalyst-equipped tubular member 71 efficiently reacts, and the unburned components in the exhaust gas are efficiently oxidized to harmless components Can be converted to
【００４３】ところで、仮に、第２の触媒付き筒部材７
１が熱変形により楕円になると、内側の第１の触媒付き
筒部材６１に接触する虞がある。そこで、第２の触媒付
き筒部材７１のオーバーラップ部９４に補強リング９３
を付設し、かつ第２の触媒付き筒部材７１のオーバーラ
ップ部９４におけるパンチング孔９０…の密度を他の部
分より粗くして不都合な変形を抑えるようにし、排気ガ
ス浄化装置６０の性能を維持するようにした。なお、第
２の触媒付き筒部材７１のオーバーラップ部９４に補強
リング９３を付設する方法と、第２の触媒付き筒部材７
１のオーバーラップ部９４におけるパンチング孔９０…
の密度を他の部分より粗くする方法との一方のみを実施
しても同様の効果を得ることができる。By the way, if the second cylinder member 7 with catalyst is
If 1 becomes elliptical due to thermal deformation, there is a possibility that it will come into contact with the first inner cylindrical member 61 with catalyst. Therefore, the reinforcing ring 93 is attached to the overlapping portion 94 of the second tubular member 71 with catalyst.
And the density of the punching holes 90 in the overlap portion 94 of the second catalyzed tubular member 71 is made coarser than other portions to suppress undesired deformation, and the performance of the exhaust gas purifying device 60 is maintained. I did it. The method of attaching the reinforcing ring 93 to the overlap portion 94 of the second catalyzed tubular member 71 and the second catalyzed tubular member 7
Punching holes 90 in the overlap portion 94 of the first...
The same effect can be obtained by implementing only one of the methods of making the density higher than that of the other parts.
【００４４】一方、図９に示す第２の触媒付き筒部材７
１は、孔なし部８５ａ，８５ｂ，８５ｃの側部がそれぞ
れ低密度孔あり部８７…に隣接する。従って、排気ガス
で第２の触媒付き筒部材７１を加熱したとき、左側の孔
なし部８５ａから低密度孔あり部８７につながるの領域
の熱分布が緩やかに変化するのでパンチング孔９０…か
ら亀裂が発生する心配はない。On the other hand, the second cylinder member 7 with catalyst shown in FIG.
1 is such that the side portions of the non-hole portions 85a, 85b, 85c are adjacent to the low-density hole portions 87, respectively. Accordingly, when the second catalyzed cylinder member 71 is heated by the exhaust gas, the heat distribution in the region from the non-perforated portion 85a on the left side to the low-density perforated portion 87 gradually changes, so that the cracks from the punching holes 90. There is no need to worry.
【００４５】同様に、中央の孔なし部８５ｂから孔あり
部８６ａ，８６ｂにつながる領域の熱分布が緩やかに変
化し、かつ右側の孔なし部８５ｃから孔あり部８６ｂに
つながる領域の熱分布が緩やかに変化する。従って、こ
れらの領域のパンチング孔９０…から亀裂が発生する心
配はない。また、突合せ溶接部９１は孔なし部８５ｄ，
８５ｄに隣接するので、突合せ溶接部９１を孔あり部か
ら離すことができる。従って、第２の触媒付き筒部材７
１を排気ガスで加熱したとき、孔あり部から突合せ溶接
部９１に向って亀裂が発生する心配はない。Similarly, the heat distribution in the region from the central non-perforated portion 85b to the perforated portions 86a and 86b gradually changes, and the heat distribution in the region from the right non-perforated portion 85c to the perforated portion 86b changes. Changes slowly. Therefore, there is no fear that cracks are generated from the punching holes 90 in these areas. Also, the butt welded portion 91 has a holeless portion 85d,
Since it is adjacent to 85d, the butt-welded portion 91 can be separated from the holed portion. Therefore, the second catalyst-attached cylinder member 7
When 1 is heated by the exhaust gas, there is no fear that a crack is generated from the holed portion toward the butt welded portion 91.
【００４６】尚、本実施例は排気ガス浄化装置を自動二
輪車の排気管に使用した場合について説明したが、本発
明の排気ガス浄化装置は産業機械などのその他の内燃機
関の排気管に使用してもよいことは勿論である。Although the present embodiment has been described in connection with the case where the exhaust gas purifying apparatus is used for the exhaust pipe of a motorcycle, the exhaust gas purifying apparatus of the present invention is used for the exhaust pipe of other internal combustion engines such as industrial machines. Of course, it may be possible.
【００４７】[0047]
【発明の効果】本発明は上記構成により次の効果を発揮
する。請求項１は、２つの排気ガス浄化装置を排気管の
エキパイ部後部より膨張室に渡って直列に配置する構成
としたので、各排気ガス浄化装置は排気口に近い位置で
排気ガスの乱れをおこさない。従って、エンジンの出力
特性に影響が及ぶ心配はない。According to the present invention, the following effects are exhibited by the above configuration. Since the two exhaust gas purifying devices are arranged in series from the rear part of the exhaust pipe of the exhaust pipe to the expansion chamber, each exhaust gas purifying device reduces the turbulence of the exhaust gas at a position close to the exhaust port. Don't wake up. Therefore, there is no fear that the output characteristics of the engine are affected.
【００４８】また、１段目の排気ガス浄化装置で酸化反
応させ、引つづき２段目の排気ガス浄化装置で酸化反応
を連続的に実施させるようにしたので、排気ガスの温度
が低くなる位置に触媒を配置しても、２段目の排気ガス
浄化装置を触媒が効率よく反応する温度まで加熱でき、
排気ガス中の未燃焼成分を効率よく酸化して無害成分に
転換できる。Further, the oxidation reaction is carried out by the first-stage exhaust gas purifying device and the oxidation reaction is continuously carried out by the second-stage exhaust gas purifying device. Even if a catalyst is placed in the second stage, the second-stage exhaust gas purification device can be heated to a temperature at which the catalyst efficiently reacts,
Unburned components in the exhaust gas can be efficiently oxidized and converted to harmless components.
【００４９】さらに、仮に、大径の排気ガス浄化装置が
熱変形により楕円になると、内側の小径の排気ガス浄化
装置に接触する虞がある。そこで、大径の排気ガス浄化
装置のオーバーラップ部に補強リングを付設して、不都
合な変形を抑えるようにし、排気ガス浄化装置の性能を
維持するようにした。Further, if the large-diameter exhaust gas purifying device becomes elliptical due to thermal deformation, there is a possibility that the large-diameter exhaust gas purifying device may come into contact with the inside small-diameter exhaust gas purifying device. Therefore, a reinforcement ring is attached to the overlap portion of the large-diameter exhaust gas purifying device to suppress undesired deformation and maintain the performance of the exhaust gas purifying device.
【００５０】請求項２は、２つの排気ガス浄化装置を排
気管のエキパイ部後部より膨張室に渡って直列に配置す
る構成としたので、各排気ガス浄化装置は排気口に近い
位置で排気ガスの乱れをおこさない。従って、エンジン
の出力特性に影響が及ぶ心配はない。According to a second aspect of the present invention, the two exhaust gas purifying devices are arranged in series from the rear part of the exhaust pipe of the exhaust pipe to the expansion chamber, so that each exhaust gas purifying device is located at a position close to the exhaust port. Do not cause disturbance. Therefore, there is no fear that the output characteristics of the engine are affected.
【００５１】また、１段目の排気ガス浄化装置で酸化反
応させ、引続き２段目の排気ガス浄化装置で酸化反応を
連続的に実施させるようにしたので、排気ガスの温度が
低くなる位置に触媒を配置しても、２段目の排気ガス浄
化装置を触媒が効率よく反応する温度まで加熱でき、排
気ガス中の未燃焼成分を効率よく酸化して無害成分に転
換できる。Further, the oxidation reaction is performed by the first-stage exhaust gas purifier, and the oxidation reaction is continuously performed by the second-stage exhaust gas purifier. Even if a catalyst is provided, the second-stage exhaust gas purifying device can be heated to a temperature at which the catalyst efficiently reacts, and the unburned components in the exhaust gas can be efficiently oxidized and converted to harmless components.
【００５２】さらに、仮に、大径の排気ガス浄化装置が
熱変形により楕円になると、内側の小径の排気ガス浄化
装置に接触する虞がある。そこで、大径の排気ガス浄化
装置のオーバーラップ部におけるパンチング孔の密度を
他の部分より粗くして、不都合な変形を抑えるように
し、排気ガス浄化装置の性能を維持するようにした。Further, if the large-diameter exhaust gas purifying device becomes elliptical due to thermal deformation, there is a possibility that the large-diameter exhaust gas purifying device may contact the inner small-diameter exhaust gas purifying device. Therefore, the density of the punched holes in the overlap portion of the large-diameter exhaust gas purifying device is made coarser than other portions so as to suppress undesired deformation and maintain the performance of the exhaust gas purifying device.
【図１】本発明に係る排気ガス浄化装置を備えた自動二
輪車の側面図FIG. 1 is a side view of a motorcycle provided with an exhaust gas purification device according to the present invention.
【図２】本発明に係る排気ガス浄化装置を備えた自動二
輪車の平面図FIG. 2 is a plan view of a motorcycle including the exhaust gas purifying apparatus according to the present invention.
【図３】本発明に係る排気ガス浄化装置を備えた排気管
の側面図FIG. 3 is a side view of an exhaust pipe provided with an exhaust gas purification device according to the present invention.
【図４】本発明に係る排気ガス浄化装置の要部断面図FIG. 4 is a sectional view of a main part of an exhaust gas purifying apparatus according to the present invention.
【図５】図４の５−５線断面図FIG. 5 is a sectional view taken along line 5-5 of FIG. 4;
【図６】本発明に係る第１の触媒付き筒部材の側面図FIG. 6 is a side view of the first tubular member with a catalyst according to the present invention.
【図７】図４の７−７線断面図FIG. 7 is a sectional view taken along line 7-7 of FIG. 4;
【図８】図４の８−８線断面図8 is a sectional view taken along line 8-8 in FIG. 4;
【図９】本発明に係る第２の触媒付き筒部材の側面図FIG. 9 is a side view of a second cylindrical member with a catalyst according to the present invention.
【図１０】本発明に係る排気ガス浄化装置の第１製造説
明図FIG. 10 is a first manufacturing explanatory view of an exhaust gas purifying apparatus according to the present invention.
【図１１】本発明に係る排気ガス浄化装置の第２製造説
明図FIG. 11 is a diagram illustrating a second manufacturing process of the exhaust gas purifying apparatus according to the present invention.
【図１２】本発明に係る排気ガス浄化装置の第３製造説
明図FIG. 12 is a third manufacturing explanatory view of the exhaust gas purifying apparatus according to the present invention.
６０…排気ガス浄化装置、６１…第１の触媒付き筒部材
（小径の排気ガス浄化装置）、７１…第２の触媒付き筒
部材（大径の排気ガス浄化装置）、８０，１００…パン
チングメタル、８５ａ，１０１ｂ…孔なし部、８７，１
０３…低密度孔あり部、９０…パンチング孔、９３…補
強リング、９４…オーバーラップ部。Numeral 60: Exhaust gas purifier, 61: First cylindrical member with catalyst (small-diameter exhaust gas purifier), 71: Second cylindrical member with catalyst (large-diameter exhaust gas purifier), 80, 100: Punching metal , 85a, 101b... Without holes, 87, 1
03: low density hole portion, 90: punching hole, 93: reinforcing ring, 94: overlap portion.
Claims (2)
小径及び大径の排気ガス浄化装置を排気管のエキパイ部
後部より膨張室に渡って直列に配置し、且つ前記小径の
排気ガス浄化装置に大径の排気ガス浄化装置をオーバー
ラップさせ、前記大径の排気ガス浄化装置のオーバーラ
ップ部に補強リングを付設したことを特徴とする排気ガ
ス浄化装置。1. A small-diameter and large-diameter exhaust gas purifying device formed in a cylindrical shape and carrying a catalyst is arranged in series from an exhaust pipe rear portion of an exhaust pipe to an expansion chamber, and the small-diameter exhaust gas purifying device is provided. An exhaust gas purifying apparatus characterized in that a large-diameter exhaust gas purifying apparatus is overlapped with a large-diameter exhaust gas purifying apparatus, and a reinforcing ring is attached to an overlap portion of the large-diameter exhaust gas purifying apparatus.
もに触媒を担持した小径及び大径の排気ガス浄化装置を
排気管のエキパイ部後部より膨張室に渡って直列に配置
し、且つ前記小径の排気ガス浄化装置に大径の排気ガス
浄化装置をオーバーラップさせ、前記オーバーラップ部
におけるパンチング孔の密度を他の部分より粗くしたこ
とを特徴とする排気ガス浄化装置。2. A small-diameter and large-diameter exhaust gas purifying device formed in a cylindrical shape with punching metal and carrying a catalyst is arranged in series from the rear part of the exhaust pipe of the exhaust pipe to the expansion chamber, and the small-diameter exhaust gas is exhausted. An exhaust gas purifying apparatus, wherein a large-diameter exhaust gas purifying apparatus is overlapped with the gas purifying apparatus, and the density of the punched holes in the overlap portion is made coarser than other parts.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18945596A JP3699209B2 (en) | 1996-07-18 | 1996-07-18 | Exhaust gas purification device |
| TW086108450A TW368549B (en) | 1996-07-18 | 1997-06-17 | Purification apparatus for exhausted gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18945596A JP3699209B2 (en) | 1996-07-18 | 1996-07-18 | Exhaust gas purification device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH1030432A true JPH1030432A (en) | 1998-02-03 |
| JP3699209B2 JP3699209B2 (en) | 2005-09-28 |
Family
ID=16241553
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18945596A Expired - Lifetime JP3699209B2 (en) | 1996-07-18 | 1996-07-18 | Exhaust gas purification device |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP3699209B2 (en) |
| TW (1) | TW368549B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005021944A1 (en) * | 2003-08-27 | 2005-03-10 | Oberland Mangold Gmbh | Catalyst body and exhaust system for a small engine and method for production of the catalyst body |
| JP2010037965A (en) * | 2008-07-31 | 2010-02-18 | Honda Motor Co Ltd | Saddle ride type vehicle |
| JP2013204515A (en) * | 2012-03-28 | 2013-10-07 | Honda Motor Co Ltd | Exhaust device for saddle-ride type vehicle |
-
1996
- 1996-07-18 JP JP18945596A patent/JP3699209B2/en not_active Expired - Lifetime
-
1997
- 1997-06-17 TW TW086108450A patent/TW368549B/en active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005021944A1 (en) * | 2003-08-27 | 2005-03-10 | Oberland Mangold Gmbh | Catalyst body and exhaust system for a small engine and method for production of the catalyst body |
| JP2010037965A (en) * | 2008-07-31 | 2010-02-18 | Honda Motor Co Ltd | Saddle ride type vehicle |
| JP2013204515A (en) * | 2012-03-28 | 2013-10-07 | Honda Motor Co Ltd | Exhaust device for saddle-ride type vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| TW368549B (en) | 1999-09-01 |
| JP3699209B2 (en) | 2005-09-28 |
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