JPH0487316U

JPH0487316U -

Info

Publication number: JPH0487316U
Application number: JP12988690U
Authority: JP
Priority date: 1990-11-30
Filing date: 1990-11-30
Publication date: 1992-07-29

Description

[Brief explanation of drawings]

図面はこの考案の一実施例を示すもので、第１
図はデイーゼルエンジンの排気ガス処理装置の要
部構成を示す概略構成図、第２図はパテイキユレ
ートトラツプの概略構成を示す縦断面図、第３図
はパテイキユレートトラツプの端面を示す正面図
、第４図はコントローラの接続状態を示す概略構
成図、第５図はパテイキユレートトラツプの再生
処理動作を説明するためのフローチヤートである
。２……排気ガス通路、６……パテイキユレート
トラツプ、１５……第１の開閉弁（切換え手段）
、１７……第２の開閉弁（切換え手段）、２１…
…コントローラ、２４……温度センサ。 The drawing shows one embodiment of this invention.
The figure is a schematic configuration diagram showing the main parts of a diesel engine exhaust gas treatment device, Figure 2 is a vertical sectional view showing the schematic configuration of a particulate trap, and Figure 3 is an end view of the particulate trap. 4 is a schematic configuration diagram showing the connection state of the controller, and FIG. 5 is a flowchart for explaining the regeneration processing operation of the particulate trap. 2... Exhaust gas passage, 6... Particulate trap, 15... First on-off valve (switching means)
, 17... second on-off valve (switching means), 21...
...Controller, 24...Temperature sensor.

Claims

[Scope of Claim for Utility Model Registration] A particulate trap that is disposed in the middle of an exhaust gas passage and collects particulate matter in the exhaust gas flowing in this exhaust gas passage; a heating means for regenerating the particulate trap by burning the collected particulate; a bypass passage connected to the exhaust gas passage in parallel with the particulate trap; and a bypass passage connected to the exhaust gas passage in parallel with the particulate trap; a switching means for switching between a normal operating state in which exhaust gas is guided to the particulate trap side and a regeneration processing state of the particulate trap in which the exhaust gas is guided to the bypass passage side; and detecting the temperature of the particulate trap. a temperature sensor for regenerating the particulate trap, and driving the regeneration heating means while switching the switching means to a state in which the exhaust gas from the exhaust gas passage is guided to the bypass passage side during regeneration processing of the particulate trap;
During the regeneration process of the particulate trap, the temperature of the particulate trap is detected based on the detection signal from the temperature sensor, and the detected temperature of the particulate trap reaches a preset upper limit temperature. An exhaust gas treatment device comprising: a controller that switches and controls the switching means to cause exhaust gas from the exhaust gas passage to flow into the particulate trap side when the exhaust gas reaches the particulate trap side.