JPS5962219U

JPS5962219U - Diesel engine exhaust purification device

Info

Publication number: JPS5962219U
Application number: JP15787182U
Authority: JP
Inventors: 茂桜井; 松岡　孟; 義隆野元; 健治大久保
Original assignee: Mazda Motor Corp
Current assignee: Mazda Motor Corp
Priority date: 1982-10-18
Filing date: 1982-10-18
Publication date: 1984-04-24

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

[Brief explanation of drawings]

第１図は本考案の装置の一実施例を示す概略図、第２図
ＡおよびＢはフィルタ一部材および酸化触媒の一例を示
す部分拡大断面図、第３図はフィルタ一部材および酸化
触媒の別の例を示す断面図、第４図は排気温度増加装置
および未燃成分増加装置の別の例を宗す断面図、第５図
は第４図に示す装置を用いた場合の実施例を示す全体構
造概略図である。１・・・・・・ディーゼルエンジン本体、２・・・、２
′・・・・・・気筒、４・・・・・・排気通路、４ｂ・
・・・・・バイパス通路、５・・・・・・フィルタ一部
材、６・・・・・・酸化触媒、７・・・・・・ＥＧＲ通
路、７ａ・・・・・・一部気筒への還流通路、１７・・
・・・・排気通路切替弁、２２・・・・・・目詰まり解
消用の制御回路、３０・・・・・・燃料噴射ノズル。Fig. 1 is a schematic diagram showing an embodiment of the device of the present invention, Fig. 2 A and B are partially enlarged sectional views showing an example of a filter member and an oxidation catalyst, and Fig. 3 is a schematic diagram showing an example of a filter member and an oxidation catalyst. 4 is a sectional view showing another example of the exhaust temperature increasing device and unburned component increasing device, and FIG. 5 is a sectional view showing another example of the device shown in FIG. 4. FIG. 1... Diesel engine body, 2..., 2
'...Cylinder, 4...Exhaust passage, 4b.
... Bypass passage, 5 ... Filter member, 6 ... Oxidation catalyst, 7 ... EGR passage, 7a ... To some cylinders Reflux passage, 17...
... Exhaust passage switching valve, 22 ... Control circuit for eliminating clogging, 30 ... Fuel injection nozzle.

Claims

[Scope of utility model registration request]

In an exhaust purification system for a diesel engine, the exhaust passage of a diesel engine is equipped with a filter member for collecting particulate components in the exhaust gas and an oxidation catalyst provided integrally with the filter member or upstream of the filter member. A control device that includes at least one of an exhaust temperature increasing potash device or an unburned component increasing device, and operates the device when a filter member is clogged or at predetermined operation intervals;
The present invention is characterized by comprising a bypass passage that bypasses the filter member, and an exhaust passage switching device that guides the exhaust gas of some of the cylinders to the filter member and guides the exhaust gas of other cylinders to the bypass passage in response to an activation signal from the control device. Exhaust purification device for diesel engines.