JPS63121754U - - Google Patents
Info
- Publication number
- JPS63121754U JPS63121754U JP1266487U JP1266487U JPS63121754U JP S63121754 U JPS63121754 U JP S63121754U JP 1266487 U JP1266487 U JP 1266487U JP 1266487 U JP1266487 U JP 1266487U JP S63121754 U JPS63121754 U JP S63121754U
- Authority
- JP
- Japan
- Prior art keywords
- exhaust gas
- intake pressure
- gas recirculation
- recirculation device
- fail
- 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
- 230000005856 abnormality Effects 0.000 claims description 2
- 238000001514 detection method Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Exhaust-Gas Circulating Devices (AREA)
Description
第１図は本考案の要旨構成を示すブロツク図、
第２図は本考案の適用される電子制御デイーゼル
エンジンの実施例の全体構成を示す、一部ブロツ
ク線図を含む断面図、第３図は前記デイーゼルエ
ンジンの電子制御ユニツトの電気的な構成を示す
ブロツク線図、第４図は前記デイーゼルエンジン
のＥＧＲ弁の異常を検出する第１実施例のメイン
ルーチンを示す流れ図、第５図は同じく、第２実
施例のメインルーチンを示す流れ図である。
１０…デイーゼルエンジン、１８…主吸気絞り
弁、２２…副吸気絞り弁、３２…吸気圧センサ、
５４…ＥＧＲ弁、５５…ＥＶＲＶ、５６…電子制
御ユニツト（ＥＣＵ）。
Figure 1 is a block diagram showing the main structure of the present invention.
FIG. 2 is a cross-sectional view, including a partial block diagram, showing the overall configuration of an embodiment of an electronically controlled diesel engine to which the present invention is applied, and FIG. 3 shows the electrical configuration of the electronic control unit of the diesel engine. FIG. 4 is a flow chart showing the main routine of the first embodiment for detecting an abnormality in the EGR valve of the diesel engine, and FIG. 5 is a flow chart showing the main routine of the second embodiment. 10... Diesel engine, 18... Main intake throttle valve, 22... Sub-intake throttle valve, 32... Intake pressure sensor,
54...EGR valve, 55...EVRV, 56...electronic control unit (ECU).
Claims (1)
の吸気圧センサとを有するデイーゼルエンジンに
設けられた排気ガス再循環装置のフエイルセイフ
装置において、 前記吸気圧センサで検出された吸気圧が所定領
域以外の圧力のとき、前記排気ガス再循環装置に
異常が発生したと判断するための手段を備えたこ
とを特徴とする排気ガス再循環装置のフエイルセ
イフ装置。[Scope of Claim for Utility Model Registration] In a fail-safe device for an exhaust gas recirculation device installed in a diesel engine, which has an exhaust gas recirculation device and an intake pressure sensor for detecting intake pressure, the detection is performed by the intake pressure sensor. 1. A fail-safe device for an exhaust gas recirculation device, comprising means for determining that an abnormality has occurred in the exhaust gas recirculation device when the intake pressure is outside a predetermined range.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1266487U JPS63121754U (en) | 1987-01-30 | 1987-01-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1266487U JPS63121754U (en) | 1987-01-30 | 1987-01-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63121754U true JPS63121754U (en) | 1988-08-08 |
Family
ID=30801003
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1266487U Pending JPS63121754U (en) | 1987-01-30 | 1987-01-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63121754U (en) |
-
1987
- 1987-01-30 JP JP1266487U patent/JPS63121754U/ja active Pending
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