JPS6261919U - - Google Patents
Info
- Publication number
- JPS6261919U JPS6261919U JP15342585U JP15342585U JPS6261919U JP S6261919 U JPS6261919 U JP S6261919U JP 15342585 U JP15342585 U JP 15342585U JP 15342585 U JP15342585 U JP 15342585U JP S6261919 U JPS6261919 U JP S6261919U
- Authority
- JP
- Japan
- Prior art keywords
- exhaust gas
- catalyst
- detecting
- outlet
- inlet
- 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
- 239000003054 catalyst Substances 0.000 claims description 7
- 238000002485 combustion reaction Methods 0.000 claims 1
- 230000006866 deterioration Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
Description
第１図は本考案の実施例を示す構成図、第２図
は触媒の性能を空燃比と触媒流出入排気温度との
関係で現す特性図、第３図は制御動作を示すフロ
ーチヤートである。
１…機関本体、２…排気通路、３…触媒、５…
車速センサ、６…機関冷却水温度センサ、７…機
関回転数センサ、８…吸入負圧センサ、１０，１
１…排気温度センサ、１２…制御回路、１６…警
報ランプ。
Fig. 1 is a configuration diagram showing an embodiment of the present invention, Fig. 2 is a characteristic diagram showing the performance of the catalyst in relation to the air-fuel ratio and catalyst inlet/outlet exhaust temperature, and Fig. 3 is a flowchart showing the control operation. . 1...Engine body, 2...Exhaust passage, 3...Catalyst, 5...
Vehicle speed sensor, 6... Engine cooling water temperature sensor, 7... Engine speed sensor, 8... Suction negative pressure sensor, 10, 1
1...Exhaust temperature sensor, 12...Control circuit, 16...Alarm lamp.
Claims (1)
関において、この触媒の入口及び出口の排気温度
を検出する手段と、機関の運転状態を検出する手
段と、前記入口及び出口の排気温度差がその運転
状態に応じて予め設定した所定値よりも少ないと
きに触媒が劣化していると判定する手段とを備え
たことを特徴とする排気ガス浄化用触媒の劣化判
定装置。 In an internal combustion engine in which an exhaust gas purifying catalyst is installed in an exhaust passage, there is provided a means for detecting the exhaust gas temperature at the inlet and outlet of the catalyst, a means for detecting the operating state of the engine, and a means for detecting the exhaust gas temperature difference between the inlet and the outlet. 1. A deterioration determining device for an exhaust gas purifying catalyst, comprising means for determining that the catalyst has deteriorated when the amount is less than a predetermined value set in advance depending on the operating state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15342585U JPS6261919U (en) | 1985-10-07 | 1985-10-07 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15342585U JPS6261919U (en) | 1985-10-07 | 1985-10-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6261919U true JPS6261919U (en) | 1987-04-17 |
Family
ID=31072294
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15342585U Pending JPS6261919U (en) | 1985-10-07 | 1985-10-07 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6261919U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0227109A (en) * | 1988-07-13 | 1990-01-29 | Nissan Motor Co Ltd | Detecting device for catalyst deterioration |
| EP0779416A1 (en) | 1995-12-15 | 1997-06-18 | Ngk Insulators, Ltd. | Method for detection of performance reduction of exhaust gas purification catalyst |
| EP0780551A1 (en) | 1995-12-18 | 1997-06-25 | Ngk Insulators, Ltd. | Method for detection of performance reduction of exhaust gas purification catalyst |
| KR100232704B1 (en) * | 1995-04-18 | 1999-12-01 | 도오다 고오이찌로 | Method and apparatus for estimating catalytic temperature of a vehicle |
| JP2003519323A (en) * | 1999-12-31 | 2003-06-17 | ロベルト・ボッシュ・ゲゼルシャフト・ミト・ベシュレンクテル・ハフツング | Especially the operation method of the internal combustion engine of the automobile |
| JP2008261302A (en) * | 2007-04-13 | 2008-10-30 | Toyota Motor Corp | Exhaust emission control device for internal combustion engine |
-
1985
- 1985-10-07 JP JP15342585U patent/JPS6261919U/ja active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0227109A (en) * | 1988-07-13 | 1990-01-29 | Nissan Motor Co Ltd | Detecting device for catalyst deterioration |
| KR100232704B1 (en) * | 1995-04-18 | 1999-12-01 | 도오다 고오이찌로 | Method and apparatus for estimating catalytic temperature of a vehicle |
| EP0779416A1 (en) | 1995-12-15 | 1997-06-18 | Ngk Insulators, Ltd. | Method for detection of performance reduction of exhaust gas purification catalyst |
| EP0780551A1 (en) | 1995-12-18 | 1997-06-25 | Ngk Insulators, Ltd. | Method for detection of performance reduction of exhaust gas purification catalyst |
| JP2003519323A (en) * | 1999-12-31 | 2003-06-17 | ロベルト・ボッシュ・ゲゼルシャフト・ミト・ベシュレンクテル・ハフツング | Especially the operation method of the internal combustion engine of the automobile |
| JP2008261302A (en) * | 2007-04-13 | 2008-10-30 | Toyota Motor Corp | Exhaust emission control device for internal combustion engine |
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