JPH0267020U - - Google Patents
Info
- Publication number
- JPH0267020U JPH0267020U JP14600688U JP14600688U JPH0267020U JP H0267020 U JPH0267020 U JP H0267020U JP 14600688 U JP14600688 U JP 14600688U JP 14600688 U JP14600688 U JP 14600688U JP H0267020 U JPH0267020 U JP H0267020U
- Authority
- JP
- Japan
- Prior art keywords
- exhaust gas
- catalytic converter
- temperature
- exhaust
- catalyst
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000003197 catalytic effect Effects 0.000 claims description 10
- 238000000746 purification Methods 0.000 claims description 3
- 239000003054 catalyst Substances 0.000 claims 3
- 238000011144 upstream manufacturing Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 1
Landscapes
- Exhaust Gas After Treatment (AREA)
Description
第１図は本考案の一実施例に係る排気ガス浄化
装置の概略構成図、第２図は比較例に係る排気ガ
ス浄化装置の概略構成図、である。
１……エンジン、４……触媒コンバータ、８…
…ＨＣトラツパ、１０……温度センサ、１１……
流路切換手段、１２……第１の切換弁、１３……
第２の切換弁、１４……ポンプ、１５……ＥＣＵ
（電子制御装置）。
FIG. 1 is a schematic configuration diagram of an exhaust gas purification device according to an embodiment of the present invention, and FIG. 2 is a schematic configuration diagram of an exhaust gas purification device according to a comparative example. 1...Engine, 4...Catalytic converter, 8...
...HC trapper, 10...temperature sensor, 11...
Flow path switching means, 12...first switching valve, 13...
Second switching valve, 14...pump, 15...ECU
(electronic control unit).
Claims (1)
う触媒コンバータと、 前記触媒コンバータ内に流入する排気ガスの温
度を検出する温度センサと、 前記触媒コンバータの下流の排気通路に対して
並列に接続され排気ガス中のＨＣを吸着するＨＣ
トラツパと、 前記温度センサからの信号に基づいて作動し、
前記触媒コンバータの触媒が活性化しない排気ガ
スの温度では触媒コンバータから排出される排気
ガスを前記ＨＣトラツパを介して前記排気通路に
流し、前記触媒が活性化開始した排気ガスの温度
では触媒コンバータから流出する排気ガスをその
まま前記排気通路に流し、前記触媒が完全に活性
化する排気ガスの温度では触媒コンバータから流
出する排気ガスを前記排気通路に流すとともに該
排気ガスの一部を前記ＨＣトラツプに吸着された
ＨＣとともに前記触媒コンバータの上流に戻す流
路切換手段と、 を具備したことを特徴とする排気ガス浄化装置
。[Scope of Claim for Utility Model Registration] A catalytic converter that purifies exhaust gas discharged from an engine, a temperature sensor that detects the temperature of the exhaust gas flowing into the catalytic converter, and an exhaust passage downstream of the catalytic converter. HC is connected in parallel with the HC that adsorbs HC in the exhaust gas.
a trapper, and operates based on a signal from the temperature sensor,
When the exhaust gas temperature does not activate the catalyst of the catalytic converter, the exhaust gas discharged from the catalytic converter flows into the exhaust passage via the HC trapper, and when the exhaust gas temperature starts to activate the catalyst, the exhaust gas discharges from the catalytic converter flows through the catalytic converter. The exhaust gas flowing out is allowed to flow as it is into the exhaust passage, and at the temperature of the exhaust gas at which the catalyst is fully activated, the exhaust gas flowing out from the catalytic converter is allowed to flow into the exhaust passage, and a part of the exhaust gas is sent to the HC trap. An exhaust gas purification device comprising: flow path switching means for returning adsorbed HC to the upstream side of the catalytic converter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14600688U JPH0267020U (en) | 1988-11-10 | 1988-11-10 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14600688U JPH0267020U (en) | 1988-11-10 | 1988-11-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0267020U true JPH0267020U (en) | 1990-05-21 |
Family
ID=31415101
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14600688U Pending JPH0267020U (en) | 1988-11-10 | 1988-11-10 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0267020U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63253110A (en) * | 1987-04-07 | 1988-10-20 | Mazda Motor Corp | Exhaust-gas purifying device for engine |
-
1988
- 1988-11-10 JP JP14600688U patent/JPH0267020U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63253110A (en) * | 1987-04-07 | 1988-10-20 | Mazda Motor Corp | Exhaust-gas purifying device for engine |
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