JPH0352363U - - Google Patents
Info
- Publication number
- JPH0352363U JPH0352363U JP11457189U JP11457189U JPH0352363U JP H0352363 U JPH0352363 U JP H0352363U JP 11457189 U JP11457189 U JP 11457189U JP 11457189 U JP11457189 U JP 11457189U JP H0352363 U JPH0352363 U JP H0352363U
- Authority
- JP
- Japan
- Prior art keywords
- exhaust gas
- gas recirculation
- temperature sensor
- engine
- failure
- 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
- 238000003745 diagnosis Methods 0.000 claims description 2
- 238000011144 upstream manufacturing Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Exhaust-Gas Circulating Devices (AREA)
Description
第１図は本考案にかかるエンジンの排気ガス還
流装置の故障診断装置の一実施例を示す概略構成
図、第２図および第３図は制御の具体例を示すフ
ローチヤート、第４図はＥＧＲゾーンおよびフエ
イル判定ゾーンの範囲を示すグラフである。
１……エンジン、４……排気ガス還流装置、５
……大気導入通路、６……温度センサ、４１……
排気ガス還流通路、７１……故障判定手段。
FIG. 1 is a schematic configuration diagram showing an embodiment of a failure diagnosis device for an engine exhaust gas recirculation device according to the present invention, FIGS. 2 and 3 are flowcharts showing a specific example of control, and FIG. 4 is an EGR It is a graph which shows the range of a zone and a fail determination zone. 1...Engine, 4...Exhaust gas recirculation device, 5
...Air introduction passage, 6...Temperature sensor, 41...
Exhaust gas recirculation passage, 71...Failure determination means.
Claims (1)
路内に温度センサが設けられているとともに、こ
の温度センサの出力に基づいて前記排気ガス還流
装置の故障を判定する故障判定手段が設けられた
エンジンの排気ガス還流装置の故障診断装置にお
いて、前記温度センサより上流側の排気ガス還流
通路に大気を導入する大気導入通路が接続されて
いることを特徴とするエンジンの排気ガス還流装
置の故障診断装置。 An exhaust gas of an engine including a temperature sensor provided in an exhaust gas recirculation passage of an exhaust gas recirculation device of the engine, and a failure determination means for determining a failure of the exhaust gas recirculation device based on the output of the temperature sensor. A failure diagnosis device for an engine exhaust gas recirculation device, characterized in that an air introduction passage for introducing atmospheric air is connected to the exhaust gas recirculation passage upstream of the temperature sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11457189U JPH0352363U (en) | 1989-09-28 | 1989-09-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11457189U JPH0352363U (en) | 1989-09-28 | 1989-09-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0352363U true JPH0352363U (en) | 1991-05-21 |
Family
ID=31662934
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11457189U Pending JPH0352363U (en) | 1989-09-28 | 1989-09-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0352363U (en) |
-
1989
- 1989-09-28 JP JP11457189U patent/JPH0352363U/ja active Pending