JPH0222658U - - Google Patents
Info
- Publication number
- JPH0222658U JPH0222658U JP10044188U JP10044188U JPH0222658U JP H0222658 U JPH0222658 U JP H0222658U JP 10044188 U JP10044188 U JP 10044188U JP 10044188 U JP10044188 U JP 10044188U JP H0222658 U JPH0222658 U JP H0222658U
- Authority
- JP
- Japan
- Prior art keywords
- exhaust gas
- gas recirculation
- operating range
- counter
- predetermined value
- 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 6
- 238000002485 combustion reaction Methods 0.000 claims description 3
- 239000000446 fuel Substances 0.000 claims description 2
- 230000003134 recirculating effect Effects 0.000 claims 1
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Exhaust-Gas Circulating Devices (AREA)
Description
第１図は本考案によるダイアグノーシス装置を
供えた排気ガス再循環装置の一つの実施例を示す
概略構成図、第２図は本考案によるダイアグノー
シス装置の作動を示すフローチヤート、第３図は
排気ガス再循環通路温度の変化と本考案によるダ
イアグノーシス装置に於ける故障判定要領の一例
を示すグラフである。
１……内燃機関、２……エアクリーナ、３……
エアフローメータ、４……スロツトルバルブ、５
……吸気管、６……吸気マニホールド、７……燃
焼室、８……燃料インジエクタ、９……排気マニ
ホールド、１０……排気ガス取入ポート、１１…
…排気ガス注入ポート、１２，１３……導管、２
０……排気ガス再循環制御弁、２１……入口ポー
ト、２２……出口ポート、２３……弁ポート、２
４……弁要素、２５……ダイヤフラム装置、２６
……ダイヤフラム、２７……ダイヤフラム室、２
８……圧縮コイルばね、２９……導管、３０……
負圧制御弁、３１……導管、３２……感温弁、３
３……導管、３４……吸気管負圧取出ポート、３
５……弁ポート、弁ポート、３６……弁要素、３
７……ダイヤフラム、３８……大気開放室、３９
……ダイヤフラム室、４０……圧縮コイルばね、
４１……導管、４２……オリフイス、４３……圧
力室、５０……マイクロコンピユータ、５１……
中央処理ユニツト、５２……メモリ、５３……入
口ポート、５４……出口ポート、５５……デイス
トリビユータ、５６……回転数センサ、５７……
水温センサ、５８……インジケータランプ、５９
……温度センサ。
FIG. 1 is a schematic configuration diagram showing one embodiment of an exhaust gas recirculation device equipped with a diagnosis device according to the present invention, FIG. 2 is a flow chart showing the operation of the diagnosis device according to the present invention, and FIG. 3 is a flow chart showing the operation of the diagnosis device according to the present invention. It is a graph showing an example of a change in exhaust gas recirculation passage temperature and a failure determination procedure in the diagnosis device according to the present invention. 1... Internal combustion engine, 2... Air cleaner, 3...
Air flow meter, 4... Throttle valve, 5
... Intake pipe, 6 ... Intake manifold, 7 ... Combustion chamber, 8 ... Fuel injector, 9 ... Exhaust manifold, 10 ... Exhaust gas intake port, 11 ...
...Exhaust gas injection port, 12, 13...Conduit, 2
0... Exhaust gas recirculation control valve, 21... Inlet port, 22... Outlet port, 23... Valve port, 2
4...Valve element, 25...Diaphragm device, 26
...Diaphragm, 27...Diaphragm chamber, 2
8... Compression coil spring, 29... Conduit, 30...
Negative pressure control valve, 31... Conduit, 32... Temperature sensitive valve, 3
3... Conduit, 34... Intake pipe negative pressure extraction port, 3
5... Valve port, valve port, 36... Valve element, 3
7...Diaphragm, 38...Atmospheric release chamber, 39
...Diaphragm chamber, 40...Compression coil spring,
41... Conduit, 42... Orifice, 43... Pressure chamber, 50... Microcomputer, 51...
Central processing unit, 52... Memory, 53... Inlet port, 54... Outlet port, 55... Distributor, 56... Rotation speed sensor, 57...
Water temperature sensor, 58...Indicator lamp, 59
...Temperature sensor.
Claims (1)
域であるか否かを検出し、排気ガス再循環運転域
である時にはカウンタのカウント値をアツプカウ
ントし、排気ガス再循環運転域でない時には前記
カウンタのカウント値をダウンカウントし、前記
カウント値が所定値以上であつても排気ガス再循
環通路温度が所定値以上でなければ排気ガス再循
環装置が故障であると判定する排気ガス再循環装
置のダイアグノーシス装置に於て、内燃料機関の
回転数が所定値以下である極低回転数時には前記
カウンタのカウント値をダウンカウント或いは所
定値にリセツトする極低回転数時カウント補正手
段を有していることを特徴とする排気ガス再循環
装置のダイアグノーシス装置。 It detects whether or not the operating range of the internal combustion engine is an operating range in which exhaust gas recirculation is performed, and when the operating range is within the exhaust gas recirculation operating range, the count value of the counter is incremented, and when the operating range is not within the exhaust gas recirculating operating range, the counter value is incremented. An exhaust gas recirculation device that counts down the count value of a counter and determines that the exhaust gas recirculation device is malfunctioning if the exhaust gas recirculation passage temperature is not less than a predetermined value even if the count value is greater than or equal to a predetermined value. The diagnosis device includes an extremely low rotation speed count correction means for down-counting the count value of the counter or resetting it to a predetermined value when the rotation speed of the internal fuel engine is at an extremely low rotation speed below a predetermined value. A diagnosis device for an exhaust gas recirculation device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10044188U JPH0222658U (en) | 1988-07-28 | 1988-07-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10044188U JPH0222658U (en) | 1988-07-28 | 1988-07-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0222658U true JPH0222658U (en) | 1990-02-15 |
Family
ID=31328515
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10044188U Pending JPH0222658U (en) | 1988-07-28 | 1988-07-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0222658U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020079950A1 (en) * | 2018-10-18 | 2020-04-23 | ヤンマー株式会社 | Engine |
-
1988
- 1988-07-28 JP JP10044188U patent/JPH0222658U/ja active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020079950A1 (en) * | 2018-10-18 | 2020-04-23 | ヤンマー株式会社 | Engine |
| US11293384B2 (en) | 2018-10-18 | 2022-04-05 | Yanmar Power Technology Co., Ltd. | Engine |
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