JPH02133658U - - Google Patents
Info
- Publication number
- JPH02133658U JPH02133658U JP4307589U JP4307589U JPH02133658U JP H02133658 U JPH02133658 U JP H02133658U JP 4307589 U JP4307589 U JP 4307589U JP 4307589 U JP4307589 U JP 4307589U JP H02133658 U JPH02133658 U JP H02133658U
- Authority
- JP
- Japan
- Prior art keywords
- fuel ratio
- air
- energizing
- ratio sensor
- heater
- 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
- 239000000446 fuel Substances 0.000 claims description 6
- 238000002485 combustion reaction Methods 0.000 claims 2
- 238000001514 detection method Methods 0.000 claims 2
- 230000006866 deterioration Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
Landscapes
- Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
- Measuring Oxygen Concentration In Cells (AREA)
Description
第１図は本考案のクレーム対応図、第２図は本
考案の一実施例を示す構成図、第３図は同上の要
部断面図、第４図は同上のフローチヤート、第５
図及び第６図は酸素センサの特性図である。
１………制御装置、２……エアフローメータ、
４……酸素センサ、６……燃料噴射弁、７……駆
動回路、１５……セラミツクヒータ。
Fig. 1 is a diagram corresponding to the claims of the present invention, Fig. 2 is a configuration diagram showing an embodiment of the present invention, Fig. 3 is a sectional view of the main parts of the same, Fig. 4 is a flowchart of the same, and Fig. 5 is a diagram corresponding to the claims of the present invention.
6 and 6 are characteristic diagrams of the oxygen sensor. 1...Control device, 2...Air flow meter,
4...Oxygen sensor, 6...Fuel injection valve, 7...Drive circuit, 15...Ceramic heater.
Claims (1)
備える内燃機関において、前記空燃比センサの検
出部の温度若しくはこれに関連する状態を検出す
る温度検出手段と、前記空燃比センサの出力信号
に基づいて空燃比センサの劣化の有無を判定する
劣化判定手段と、空燃比センサの非劣化判定時で
かつ前記温度若しくはこれに関連する状態が所定
値以下のときに前記空燃比センサの検出部を加熱
するヒータに通電する第１通電手段と、劣化と判
定されかつ前記温度若しくはこに関連する状態が
所定値以下のときに前記ヒータに第１通電手段の
通電量よりも大きな通電量を通電する第２通電手
段と、を備えたことを特徴とする内燃機関の空燃
比センサ制御装置。 In an internal combustion engine equipped with an air-fuel ratio sensor that detects an actual air-fuel ratio of the engine, temperature detection means detects the temperature of a detection section of the air-fuel ratio sensor or a state related thereto, and a a deterioration determination means for determining whether or not the air-fuel ratio sensor has deteriorated; a first energizing means for energizing the heater, and a second energizing means for energizing the heater with an amount of current larger than the amount of current of the first energizing means when it is determined that the heater has deteriorated and the temperature or the related condition is below a predetermined value. 2. An air-fuel ratio sensor control device for an internal combustion engine, comprising: 2 current supply means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4307589U JPH02133658U (en) | 1989-04-14 | 1989-04-14 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4307589U JPH02133658U (en) | 1989-04-14 | 1989-04-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02133658U true JPH02133658U (en) | 1990-11-06 |
Family
ID=31555179
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4307589U Pending JPH02133658U (en) | 1989-04-14 | 1989-04-14 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02133658U (en) |
-
1989
- 1989-04-14 JP JP4307589U patent/JPH02133658U/ja active Pending