JPS63134159U - - Google Patents
Info
- Publication number
- JPS63134159U JPS63134159U JP2648087U JP2648087U JPS63134159U JP S63134159 U JPS63134159 U JP S63134159U JP 2648087 U JP2648087 U JP 2648087U JP 2648087 U JP2648087 U JP 2648087U JP S63134159 U JPS63134159 U JP S63134159U
- Authority
- JP
- Japan
- Prior art keywords
- control valve
- exhaust recirculation
- recirculation control
- exhaust
- output
- 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
- 238000001514 detection method Methods 0.000 claims 3
- 238000002485 combustion reaction Methods 0.000 claims 2
- 230000002159 abnormal effect Effects 0.000 claims 1
- 230000005856 abnormality Effects 0.000 claims 1
- 238000012806 monitoring device Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 5
Landscapes
- Exhaust-Gas Circulating Devices (AREA)
- Audible And Visible Signals (AREA)
Description
第１図は本考案の第１実施例を示す構成図、第
２図は同上第１実施例のＥＧＲ制御弁作動状態の
判定フローチヤート、第３図は本考案の第２実施
例の要部構成図、第４図は本考案の第３実施例の
構成図、第５図は本考案の第４実施例の構成図、
第６図は同上第４実施例のＥＧＲ制御弁作動状態
の判定フローチヤート、第７図はＥＧＲ制御作動
領域を示す図、第８図は従来例のＥＧＲ制御シス
テムを示す構成図である。
４……ＥＧＲ通路、５……ＥＧＲ制御弁、５ａ
……弁体、５ｂ……弁シート部、６……吸気通路
、７……負圧制御弁、８……負圧導入通路、９…
…コントロールユニツト、１１……感温スイツチ
、１２……コンパレータ、１３……回転数センサ
、１５……エアフローメータ、１６……警告灯、
３１……フラツプ弁、３２……近接スイツチ。
Fig. 1 is a block diagram showing a first embodiment of the present invention, Fig. 2 is a flowchart for determining the operating state of the EGR control valve in the first embodiment, and Fig. 3 is a main part of the second embodiment of the present invention. 4 is a block diagram of the third embodiment of the present invention, FIG. 5 is a block diagram of the fourth embodiment of the present invention,
FIG. 6 is a flowchart for determining the operating state of the EGR control valve in the fourth embodiment, FIG. 7 is a diagram showing the EGR control operating range, and FIG. 8 is a configuration diagram showing a conventional EGR control system. 4...EGR passage, 5...EGR control valve, 5a
...Valve body, 5b... Valve seat portion, 6... Intake passage, 7... Negative pressure control valve, 8... Negative pressure introduction passage, 9...
... Control unit, 11 ... Temperature-sensitive switch, 12 ... Comparator, 13 ... Rotation speed sensor, 15 ... Air flow meter, 16 ... Warning light,
31...flap valve, 32...proximity switch.
Claims (1)
へ還流する排気還流通路に排気還流量を制御する
排気還流制御弁を備えた内燃機関において、機関
運転状態に応じて前記排気還流制御弁を駆動制御
する制御手段と、排気還流制御弁の開閉状態を検
出する検出手段と、前記制御手段の駆動出力と検
出手段の検出出力とに基づいて排気還流制御弁の
正常又は異常を判定する判定手段と、該判定手段
の異常判定出力により警告を発する警告手段とを
備えて構成したことを特徴とする内燃機関の排気
還流制御弁作動監視装置。 In an internal combustion engine, the exhaust recirculation passage, which recirculates part of the exhaust gas discharged from the engine body to the intake passage, is equipped with an exhaust recirculation control valve that controls the amount of exhaust recirculation, and the exhaust recirculation control valve is driven according to the engine operating state. A control means for controlling the exhaust recirculation control valve, a detection means for detecting the open/closed state of the exhaust recirculation control valve, and a determination means for determining whether the exhaust recirculation control valve is normal or abnormal based on the drive output of the control means and the detection output of the detection means. 1. An exhaust gas recirculation control valve operation monitoring device for an internal combustion engine, comprising: warning means for issuing a warning based on the abnormality determination output of the determination means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2648087U JPS63134159U (en) | 1987-02-26 | 1987-02-26 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2648087U JPS63134159U (en) | 1987-02-26 | 1987-02-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63134159U true JPS63134159U (en) | 1988-09-02 |
Family
ID=30827607
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2648087U Pending JPS63134159U (en) | 1987-02-26 | 1987-02-26 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63134159U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63263255A (en) * | 1987-04-20 | 1988-10-31 | Toyota Motor Corp | Diagnosis device for exhaust gas recirculation apparatus of internal combustion engine |
-
1987
- 1987-02-26 JP JP2648087U patent/JPS63134159U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63263255A (en) * | 1987-04-20 | 1988-10-31 | Toyota Motor Corp | Diagnosis device for exhaust gas recirculation apparatus of internal combustion engine |