JPH0440113U

JPH0440113U -

Info

Publication number: JPH0440113U
Application number: JP8187390U
Authority: JP
Priority date: 1990-07-31
Filing date: 1990-07-31
Publication date: 1992-04-06

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例を示す概略構成図、
第２図は排気ガスをバイパスさせる負荷の領域を
示す線図である。１……パテイキユレート・トラツプ、２，３…
…排気ガス流路、４……バイパス流路、５……流
路切換弁、６……アクチユエータ、７……コント
ローラ、８……エンジン回転センサ、９……車速
センサ、１０……アクセル開度センサ。 FIG. 1 is a schematic configuration diagram showing an embodiment of the present invention;
FIG. 2 is a diagram showing the load range in which exhaust gas is bypassed. 1... Particulate trap, 2, 3...
...Exhaust gas flow path, 4...Bypass flow path, 5...Flow path switching valve, 6...Actuator, 7...Controller, 8...Engine rotation sensor, 9...Vehicle speed sensor, 10...Accelerator opening sensor.

補正平２．１１．１４考案の名称を次のように補正する。考案の名称デイーゼル・エンジンの触媒装
置実用新案登録請求の範囲、図面の簡単な説明を
次のように補正する。Amendment 2.11.14 The name of the invention is amended as follows. Title of invention Catalyst device for diesel engine The scope of the utility model registration claims and the brief description of the drawings are amended as follows.

【実用新案登録請求の範囲】デイーゼル・エンジンから排出される排気ガス
の流路に設けられていて、該ガスに含まれるパテ
イキユレート中のＳＯＦを酸化するデイーゼル・
エンジンの触媒装置において、排気ガス流路に配設されている低温活性酸化触
媒と、この酸化触媒の上流側の排気ガス流路から分岐
され、上記酸化触媒の周囲を囲繞していて、該触
媒の周りに排気ガスを流通させるバイパス流路と
、このバイパス流路と排気ガス流路の分岐部に設
けられた流路切換弁と、エンジンが低負荷の時には排気ガスを上記酸化
触媒に流通させ、エンジンが高負荷の時には排気
ガスを上記バイパス流路に流通させるように上記
流路切換弁を切り替え制御するコントローラとを具備したことを特徴とするデイーゼル・エン
ジンの触媒装置。[Claims for Utility Model Registration] A diesel engine that is installed in the flow path of exhaust gas discharged from a diesel engine and oxidizes SOF in the particulate matter contained in the gas.
A catalyst device for an engine includes: a low-temperature active oxidation catalyst disposed in an exhaust gas flow path; a bypass flow path that allows exhaust gas to flow around the oxidation catalyst, a flow path switching valve provided at a branch point between the bypass flow path and the exhaust gas flow path, and a flow path switching valve that allows exhaust gas to flow to the oxidation catalyst when the engine is under low load A catalyst device for a diesel engine, comprising: a controller that switches and controls the flow path switching valve so that exhaust gas flows through the bypass flow path when the engine is under high load.

【図面の簡単な説明】第１図は本考案の一実施例を示す概略構成図、
第２図は排気ガスをバイパスさせる負荷の領域を
示す線図である。１……酸化触媒、２，３……排気ガス流路、４
……バイパス流路、５……流路切換弁、６……ア
クチユエータ、７……コントローラ、８……エン
ジン回転センサ、９……車速センサ、１０……ア
クセル開度センサ。[BRIEF DESCRIPTION OF THE DRAWINGS] FIG. 1 is a schematic diagram showing an embodiment of the present invention;
FIG. 2 is a diagram showing the load range in which exhaust gas is bypassed. 1... Oxidation catalyst, 2, 3... Exhaust gas flow path, 4
... Bypass flow path, 5 ... Channel switching valve, 6 ... Actuator, 7 ... Controller, 8 ... Engine rotation sensor, 9 ... Vehicle speed sensor, 10 ... Accelerator opening sensor.

Claims

[Scope of Claim for Utility Model Registration] A catalyst device for a diesel engine that is installed in the flow path of exhaust gas discharged from a diesel engine and that collects particulate contained in the gas. The trap includes a particulate trap that supports a low-temperature active oxidation catalyst; a bypass flow path through which the exhaust gas flows, and a flow path switching valve provided at the branch point between the bypass flow path and the exhaust gas flow path, and when the engine is under low load, the exhaust gas flows through the particulate trap, and when the engine is under high load, A catalyst device for a diesel engine, comprising: a controller that switches and controls the flow path switching valve so that exhaust gas flows through the bypass flow path when the load is applied.