JPS6058818U - Two-stage catalytic converter - Google Patents

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図イは従来の二段式コンバータの一例の断面図、同
図口は他の従来例の断面図、同図ハは口　　　　゛図Ａ
−Ａ線の断面図、第２図はこの考案の一実施例の断面図
。第３図は２図Ｂ−Ｂ線に沿った断面図。第４図は保持
板の部分的拡大側面図。第５図は保持板の変更例の部分
的拡大側面図。 図中、１，１′・・・・・・ケーシング、２ａ、２ａ’
・・・・・・排気入口管、２ｂ、２ｂ’・・・・・・出
口管、３゜３′・・・・・・還元用触媒、４，４′・・
・・・・酸化用触媒、５．５′・・・・・・弾性リング
、６，６′・・・・・・保持リング、７，７′・・・・
・・二次空気供給パイプ、８・・・・・・吹口、９・・
・・・・環状通路、１６・・・・・・環状保持板、１６
ａ・・・・・・傾斜部。 ｔ７ノ　　第１図 第４図Figure 1A is a sectional view of an example of a conventional two-stage converter, the opening in the same figure is a sectional view of another conventional example, and the opening in the figure C is a sectional view of an example of a conventional two-stage converter.
2 is a cross-sectional view taken along line -A, and FIG. 2 is a cross-sectional view of one embodiment of this invention. FIG. 3 is a sectional view taken along line B-B in FIG. 2. FIG. 4 is a partially enlarged side view of the holding plate. FIG. 5 is a partially enlarged side view of a modified example of the holding plate. In the figure, 1, 1'...Casing, 2a, 2a'
...Exhaust inlet pipe, 2b, 2b'...Outlet pipe, 3゜3'...Reduction catalyst, 4,4'...
...Oxidation catalyst, 5.5'...Elastic ring, 6,6'...Retaining ring, 7,7'...
...Secondary air supply pipe, 8...Blowout port, 9...
...Annular passageway, 16...Annular holding plate, 16
a... Slanted part. t7ノ Figure 1 Figure 4

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 排気入口管２ａと出口管２ｂとの間に接続される筒状ケ
ーシング１の内部にハニカム形の還元用触媒３と酸化用
触媒４とを所要の間隔をおいて二段に配設するものにお
いて、両触媒３，４が対向する近接端部を弾性リング５
を介してアングル部１６ｂと互にハ字状に近寄る内向き
傾斜部１６ａからなる環状の保持板１６でそれぞれ支持
し、両保持板１６の外周には環状通路９を形成すると共
にそれらの接合内周縁または傾斜部に複数の吹口８を設
け、ケーシング１の中央部には環状通路９に通じる二次
空気供給パイプ７を取付けてなる二段式触媒コンバータ
。A honeycomb-shaped reduction catalyst 3 and an oxidation catalyst 4 are arranged in two stages at a required interval inside a cylindrical casing 1 connected between an exhaust inlet pipe 2a and an outlet pipe 2b. , an elastic ring 5 connects the adjacent ends where both catalysts 3 and 4 face each other.
An annular retaining plate 16 consisting of an inwardly inclined portion 16a approaching the angle portion 16b in a V-shape is supported by an annular retaining plate 16, and an annular passage 9 is formed on the outer periphery of both retaining plates 16. A two-stage catalytic converter in which a plurality of blowing ports 8 are provided on the periphery or an inclined portion, and a secondary air supply pipe 7 that communicates with an annular passage 9 is attached to the center of the casing 1.