JPH0476918U

JPH0476918U -

Info

Publication number: JPH0476918U
Application number: JP12147590U
Authority: JP
Priority date: 1990-11-20
Filing date: 1990-11-20
Publication date: 1992-07-06

Description

[Brief explanation of drawings]

第１図乃至第４図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図はエンジン本体の通常運転
時における第１、第２のパテイキユレートトラツ
プ本体の温度変化状態を示す特性図、第５図は他
の実施例を示す要部の概略構成図である。１……排気ガス通路、２ａ……第１の分岐通路
、２ｂ……第２の分岐通路、３ａ……第１のパテ
イキユレートトラツプ、３ｂ……第２のパテイキ
ユレートトラツプ、９……強制再生処理機構、１
９……切換え弁（切換え制御手段）、２０……コ
ントローラ。 Figures 1 to 4 show an embodiment of this invention. Figure 1 is a schematic diagram showing the main parts of an exhaust gas treatment device for a diesel engine, and Figure 2 is a diagram of a particulate trap. FIG. 3 is a longitudinal sectional view showing the schematic configuration, FIG. 3 is a front view showing the end face of the particulate trap, and FIG. 4 shows temperature changes in the first and second particulate trap bodies during normal operation of the engine body. A characteristic diagram showing the state, and FIG. 5 is a schematic configuration diagram of main parts showing another embodiment. 1... Exhaust gas passage, 2a... First branch passage, 2b... Second branch passage, 3a... First particulate trap, 3b... Second particulate trap, 9 ...Forced regeneration processing mechanism, 1
9...Switching valve (switching control means), 20...Controller.

Claims

[Claims for Utility Model Registration] At least a pair of branch passages connected in parallel to the exhaust gas passage, and a first particulate tray that is interposed in one of the branch passages and collects particulate matter in the exhaust gas. and a forced regeneration process that is attached to the side of the first particulate trap and forcibly burns the particulate collected in the first particulate trap to regenerate the particulate trap. a second particulate trap interposed in the other branch passage; a switching control means for switching and controlling the inflow state of exhaust gas into each of the branch passages; a first switching state in which the switching control means is driven in response to the exhaust gas passage to simultaneously flow into the first and second particulate trap sides; a second switching state in which particulates in the exhaust gas are collected by blocking the exhaust gas from flowing into the trap side and allowing the exhaust gas to flow only into the first particulate trap side; An exhaust gas treatment device comprising: a controller for switching to a third switching state in which the forced regeneration treatment mechanism is driven by blocking the inflow of the exhaust gas to the particulate trap side.