JPS5873921U

JPS5873921U - Diesel engine exhaust purification device

Info

Publication number: JPS5873921U
Application number: JP17005481U
Authority: JP
Inventors: 松岡　孟
Original assignee: マツダ株式会社
Priority date: 1981-11-13
Filing date: 1981-11-13
Publication date: 1983-05-19

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図は本考案装置の実施例を示す概略図、第２図は回
路構成を示すブロック図、第３図は制御回路のフローチ
ャート、第４図Ａは負荷および排気温度の時間的変化を
示す説明図。同図Ｂ乃至りは上記負荷および排気温度の
時間的変化に対応づけてバーナ装置制御動作を段階的に
示す説明図である。１・・・ディーゼルエンジン本体、３・・・排気通路、
４・・・フィルタ一部材、５・・・バーナ装置、２０・
・・目詰まり検出装置、２１・・・排気温度センサー、
２２・・・アクセル開度センサー、２３・・・制御回路
。Fig. 1 is a schematic diagram showing an embodiment of the device of the present invention, Fig. 2 is a block diagram showing the circuit configuration, Fig. 3 is a flowchart of the control circuit, and Fig. 4A shows temporal changes in load and exhaust temperature. Explanatory diagram. Figures B through B are explanatory diagrams showing the burner device control operation step by step in correspondence with the temporal changes in the load and exhaust temperature. 1... Diesel engine body, 3... Exhaust passage,
4... Filter member, 5... Burner device, 20.
...Clogging detection device, 21...Exhaust temperature sensor,
22...Accelerator opening sensor, 23...Control circuit.

Claims

[Scope of utility model registration request]

A filter member for collecting particulate components such as carbon particles in the exhaust gas is disposed in the exhaust passage, and a burner device is provided upstream of the filter member, and an eye for detecting a clogging state of the filter member is provided. In a diesel engine exhaust purification system that operates a burner device when a filter member becomes clogged using the output of a clog scraping device, an exhaust temperature sensor that detects the exhaust temperature and a sensor that corresponds to the engine accelerator opening are used. When the filter member is clogged and the exhaust temperature is below a predetermined value, the burner device is operated according to the accelerator opening sensor that generates the output, the output of the clogging detection device, and the output of the exhaust temperature sensor; 1. An exhaust purification device for a diesel engine, comprising: a burner control device that prevents the burner device from operating when the accelerator opening is above a predetermined value in accordance with the output of an accelerator opening sensor.