JPH031254U - - Google Patents
Info
- Publication number
- JPH031254U JPH031254U JP6091689U JP6091689U JPH031254U JP H031254 U JPH031254 U JP H031254U JP 6091689 U JP6091689 U JP 6091689U JP 6091689 U JP6091689 U JP 6091689U JP H031254 U JPH031254 U JP H031254U
- Authority
- JP
- Japan
- Prior art keywords
- exhaust gas
- gas recirculation
- passage
- exhaust
- control valve
- 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
- 238000002485 combustion reaction Methods 0.000 claims 5
- 230000005856 abnormality Effects 0.000 claims 4
- 238000004092 self-diagnosis Methods 0.000 claims 4
- 238000001514 detection method Methods 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Exhaust-Gas Circulating Devices (AREA)
Description
第１図は本考案の請求項１及び２に対応するク
レーム対応図、第２図は請求項１に対応する実施
例を示す構成図、第３図は同上のフローチヤート
、第４図及び第５図は同上の作用を説明するため
の図、第６図は請求項２に対応する実施例のフロ
ーチヤート、第７図は同上の作用を説明するため
の図である。
１…スロツトル弁、２…吸気通路、３…排気通
路、４…排気還流通路、５…排気還流制御弁、６
…負圧通路、７…電磁弁、８…吸気圧センサ、９
…制御装置。
Fig. 1 is a claim correspondence diagram corresponding to claims 1 and 2 of the present invention, Fig. 2 is a configuration diagram showing an embodiment corresponding to claim 1, Fig. 3 is a flowchart of the same, and Figs. FIG. 5 is a diagram for explaining the same operation, FIG. 6 is a flowchart of an embodiment corresponding to claim 2, and FIG. 7 is a diagram for explaining the same operation. 1... Throttle valve, 2... Intake passage, 3... Exhaust passage, 4... Exhaust recirculation passage, 5... Exhaust recirculation control valve, 6
...Negative pressure passage, 7... Solenoid valve, 8... Intake pressure sensor, 9
…Control device.
Claims (1)
通路と、該排気還流通路を開閉路する排気還流制
御弁と、を備える内燃機関の排気還流装置におい
て、スロツトル弁下流の吸気通路の吸気圧力を検
出する吸気圧力検出手段と、自己診断条件成立時
に前記排気還流制御弁を所定回開閉駆動させる弁
駆動手段と、前記排気還流制御弁の開動作時の閉
動作時とに検出された吸気圧力に基づいて排気還
流装置の異常の有無を判定する異常判定手段と、
を備えたことを特徴とする内燃機関における排気
還流装置の自己診断装置。 (2) 吸気通路と排気通路とを連通する排気還流
通路と、該排気還流通路を開閉路する排気還流制
御弁と、を備える内燃機関の排気還流装置におい
て、機関の燃焼室の筒内圧力を検出する筒内圧力
検出手段と、自己診断条件成立時に前記排気還流
制御弁を所定回開閉駆動させる弁駆動手段と、前
記排気還流制御弁の開動作時と閉動作時とに検出
された筒内圧力に基づいて排気還流装置の異常の
有無を判定する異常判定手段を備えたことを特徴
とする内燃機関における排気還流装置の自己診断
装置。[Scope of Claim for Utility Model Registration] (1) An exhaust gas recirculation system for an internal combustion engine comprising an exhaust gas recirculation passage that communicates an intake passage and an exhaust passage, and an exhaust recirculation control valve that opens and closes the exhaust gas recirculation passage. an intake pressure detection means for detecting intake pressure in an intake passage downstream of the valve; a valve drive means for driving the exhaust recirculation control valve to open and close a predetermined number of times when a self-diagnosis condition is satisfied; and a closing operation when the exhaust recirculation control valve is opened. an abnormality determining means for determining whether or not there is an abnormality in the exhaust gas recirculation device based on the intake pressure detected from time to time;
A self-diagnosis device for an exhaust gas recirculation device in an internal combustion engine, characterized by comprising: (2) In an exhaust gas recirculation system for an internal combustion engine, which includes an exhaust gas recirculation passage that communicates an intake passage and an exhaust passage, and an exhaust recirculation control valve that opens and closes the exhaust gas recirculation passage, the in-cylinder pressure in the combustion chamber of the engine is controlled. cylinder pressure detection means for detecting the cylinder pressure; valve drive means for driving the exhaust gas recirculation control valve to open and close a predetermined number of times when self-diagnosis conditions are met; 1. A self-diagnosis device for an exhaust gas recirculation device in an internal combustion engine, comprising an abnormality determining means for determining the presence or absence of an abnormality in the exhaust gas recirculation device based on pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6091689U JPH031254U (en) | 1989-05-29 | 1989-05-29 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6091689U JPH031254U (en) | 1989-05-29 | 1989-05-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH031254U true JPH031254U (en) | 1991-01-09 |
Family
ID=31588701
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6091689U Pending JPH031254U (en) | 1989-05-29 | 1989-05-29 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH031254U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56107802U (en) * | 1980-01-16 | 1981-08-21 | ||
| JP2007077924A (en) * | 2005-09-15 | 2007-03-29 | Toyota Motor Corp | Failure diagnosis device for exhaust gas circulation device |
| JP2013164006A (en) * | 2012-02-10 | 2013-08-22 | Denso Corp | Suction device for internal combustion engine |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5862349A (en) * | 1981-09-19 | 1983-04-13 | ロ−ベルト・ボツシユ・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング | Exhaust gas return current ratio control apparatus of self-ignition type internal combustion engine |
| JPS643257A (en) * | 1987-06-25 | 1989-01-09 | Nippon Denso Co | Control device for recirculation of exhaust gas |
| JPS6412061A (en) * | 1987-07-03 | 1989-01-17 | Nippon Denso Co | Exhaust gas recirculation control device |
| JPS6487865A (en) * | 1987-09-29 | 1989-03-31 | Daihatsu Motor Co Ltd | Failure diagnostics for exhaust gas recirculation controller |
-
1989
- 1989-05-29 JP JP6091689U patent/JPH031254U/ja active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5862349A (en) * | 1981-09-19 | 1983-04-13 | ロ−ベルト・ボツシユ・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング | Exhaust gas return current ratio control apparatus of self-ignition type internal combustion engine |
| JPS643257A (en) * | 1987-06-25 | 1989-01-09 | Nippon Denso Co | Control device for recirculation of exhaust gas |
| JPS6412061A (en) * | 1987-07-03 | 1989-01-17 | Nippon Denso Co | Exhaust gas recirculation control device |
| JPS6487865A (en) * | 1987-09-29 | 1989-03-31 | Daihatsu Motor Co Ltd | Failure diagnostics for exhaust gas recirculation controller |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56107802U (en) * | 1980-01-16 | 1981-08-21 | ||
| JP2007077924A (en) * | 2005-09-15 | 2007-03-29 | Toyota Motor Corp | Failure diagnosis device for exhaust gas circulation device |
| JP4604931B2 (en) * | 2005-09-15 | 2011-01-05 | トヨタ自動車株式会社 | Failure diagnosis device for exhaust gas circulation system |
| JP2013164006A (en) * | 2012-02-10 | 2013-08-22 | Denso Corp | Suction device for internal combustion engine |
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