JPS6156410B2

JPS6156410B2 -

Info

Publication number: JPS6156410B2
Application number: JP5227179A
Authority: JP
Inventors: Hisao Uchama
Original assignee: Suzuki Motor Corp
Current assignee: Suzuki Motor Corp
Priority date: 1979-04-27
Filing date: 1979-04-27
Publication date: 1986-12-02
Also published as: JPS55146216A

Description

【発明の詳細な説明】この発明は、メタル担体触媒の保持装置の改良
に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a holding device for a metal carrier catalyst.

内燃機関の排気ガスを触媒に触れさせて酸化反
応を起させて浄化することが知られている。一般
に触媒は、ハニカム状のセラミツクの担体に塗付
しているが、セラミツクは、振動に弱く割れるこ
とがある。それで、芯棒に波形の金属薄板を多重
に巻付けたメタル担体を設け、これに触媒剤を塗
付したものがある。このメタル担体触媒は、芯棒
にリテーナを溶接し、このリテーナを排気管等に
取付けて保持するようにしているが、酸化反応に
伴う熱のため、溶接部が破損する等の不都合があ
る。 It is known to purify exhaust gas from an internal combustion engine by bringing it into contact with a catalyst to cause an oxidation reaction. Catalysts are generally coated on a honeycomb-shaped ceramic carrier, but ceramics are susceptible to vibration and can crack. Therefore, there is a method in which a metal carrier in which corrugated thin metal plates are wound multiple times around a core rod is provided, and a catalyst agent is applied to this metal carrier. In this metal carrier catalyst, a retainer is welded to the core rod and the retainer is attached to an exhaust pipe or the like to hold it, but there are disadvantages such as damage to the welded part due to the heat accompanying the oxidation reaction.

この発明は、かかる点に鑑み改善したもので、
以下図面に示す本発明の実施例について説明す
る。 This invention has been improved in view of these points,
Embodiments of the present invention shown in the drawings will be described below.

メタル担体触媒１は、芯棒２に波形の金属薄板
３を多重に巻付け、これに触媒剤を塗付して作る
が、芯棒２に波形の金属薄板３を巻付けるとき、
多数の小孔４を穿設した長さの長いパンチングプ
レート５を一緒に巻込む。メタル担体触媒１は、
第２図に示すように、排気管６端の太径部７に挿
入し、パンチングプレート５の長端をマフラ８の
入口の段部９に差込んで位置決めと同時に固定さ
せるか、第３図に示すように、パンチングプレー
ト５の長端を外側に折曲げ、排気管６とマフラ８
の連結合せ面に挿入して合せ面で挾持して固定す
る。尚、パンチングプレート５は、多数の小孔４
が穿設してあるので、排気ガスの流れは自由にで
きる。 The metal carrier catalyst 1 is made by wrapping corrugated thin metal plates 3 around a core rod 2 in multiple layers and applying a catalytic agent thereto.
A long punching plate 5 having a large number of small holes 4 is wound together. Metal carrier catalyst 1 is
As shown in FIG. 2, insert the punching plate 5 into the large diameter part 7 at the end of the exhaust pipe 6, insert the long end of the punching plate 5 into the stepped part 9 at the entrance of the muffler 8, and fix it at the same time as positioning. As shown in the figure, bend the long end of the punching plate 5 outward, and then connect the exhaust pipe 6 and
Insert it into the connecting mating surface of and clamp it between the mating surfaces to fix it. Note that the punching plate 5 has a large number of small holes 4.
is perforated, allowing free flow of exhaust gas.

作用について説明する。 The effect will be explained.

パンチングプレート５が、メタル担体触媒１の
金属薄板３の間に巻込まれるので、位置ずれ等を
生じ難く、確実に固定できる。そして、芯棒２に
金属薄板３を巻付けるとき、パンチングプレート
５を一緒に巻込むので、別に保持体を設けるのに
比べて製作の手間がかからず安価にできる。こう
して、パンチングプレート５の長端をメタル担体
触媒１の保持体として用いることができ、確実な
保持ができて、破損個所もない。 Since the punching plate 5 is wound between the thin metal plates 3 of the metal carrier catalyst 1, it is difficult to cause misalignment and can be securely fixed. When the thin metal plate 3 is wound around the core rod 2, the punching plate 5 is also wound together, so the manufacturing process is less labor-intensive and can be made at a lower cost than when a separate holder is provided. In this way, the long end of the punching plate 5 can be used as a holder for the metal carrier catalyst 1, and it can be held securely without any damage.

以上説明したように、この発明は、芯棒に波形
の金属薄板を多重に巻付け、これに触媒剤を塗付
するメタル担体触媒に於て、金属薄板を巻付ける
とき、パンチングプレートを巻込み、該パンチン
グプレート長端をマフラ内径に嵌合せるか、外側
に折曲げて排気管とマフラの合せ面に挾持させて
メタル担体触媒を保持するようにしたので、保持
体であるパンチングプレートが、金属薄板の間に
巻込まれて、硬く位置ずれ等を起さないように巻
込むことができ、同時巻込みであるので、製作の
手間も簡単で、別に保持体を作るのに比べて安価
にできる。そして、破損するような個所もなく長
い使用に耐えることができる。 As explained above, in the metal carrier catalyst in which corrugated thin metal plates are wound multiple times around a core rod and a catalytic agent is applied thereto, when the thin metal plates are wound, a punching plate is wound around the metal carrier catalyst. The long end of the punching plate is either fitted into the inner diameter of the muffler or bent outward and held between the mating surfaces of the exhaust pipe and muffler to hold the metal carrier catalyst. It can be rolled up between thin plates and rolled up so as not to cause misalignment, etc., and since it is rolled up at the same time, it is easy to manufacture and is cheaper than making a separate holding body. . Moreover, it can withstand long-term use without any parts that can be damaged.

[Brief explanation of the drawing]

第１図は本発明のパンチングプレートを巻込む
状態を示す斜視図、第２図は本発明の装着状態の
一実施例を示す縦断面図、第３図は本発明の装着
状態の他の実施例を示す縦断面図である。１……メタル担体触媒、２……芯棒、３……金
属薄板、５……パンチングプレート、６……排気
管、８……マフラ。 FIG. 1 is a perspective view showing a state in which the punching plate of the present invention is rolled up, FIG. 2 is a longitudinal sectional view showing one embodiment of the mounted state of the present invention, and FIG. 3 is another embodiment of the mounted state of the present invention. It is a longitudinal cross-sectional view showing an example. 1... Metal carrier catalyst, 2... Core rod, 3... Metal thin plate, 5... Punching plate, 6... Exhaust pipe, 8... Muffler.

Claims

[Claims]

1. In metal carrier catalysts, in which corrugated thin metal plates are wound multiple times around a core rod and a catalyst agent is applied to the core rod, when the thin metal plates are wound, a punching plate is wound, and the long end of the punching plate is connected to the inner diameter of the muffler. A holding device for a metal carrier catalyst, characterized in that the metal carrier catalyst is held by being fitted into the metal carrier catalyst or by being bent outward and sandwiched between the mating surfaces of an exhaust pipe and a muffler.