JPS61102955U - - Google Patents
Info
- Publication number
- JPS61102955U JPS61102955U JP18907284U JP18907284U JPS61102955U JP S61102955 U JPS61102955 U JP S61102955U JP 18907284 U JP18907284 U JP 18907284U JP 18907284 U JP18907284 U JP 18907284U JP S61102955 U JPS61102955 U JP S61102955U
- Authority
- JP
- Japan
- Prior art keywords
- concentration measuring
- oxygen
- measuring means
- oxygen sensor
- concentration
- 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
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims 6
- 239000001301 oxygen Substances 0.000 claims 6
- 229910052760 oxygen Inorganic materials 0.000 claims 6
- 239000007789 gas Substances 0.000 claims 2
- 230000002159 abnormal effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 5
- 239000000446 fuel Substances 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
Description
第１図は本考案の全体構成図、第２〜８図は本
考案の第１実施例を示す図であり、第２図はその
概略構成図、第３図はそのリーンセンサの分解斜
視図、第４図はそのリーンセンサの断面図、第５
図はそのコントロールユニツトのブロツク構成図
、第６図はその空燃比検出回路の回路図、第７図
はその空燃比制御のプログラムを示すフローチヤ
ート、第９図は本考案の第２実施例を示すそのリ
ーンセンサの断面図である。
１……エンジン、１２，８１……リーンセンサ
、４５……空燃比検出回路（濃度測定手段）、４
６……マイクロコンピユータ（判別手段）。
Fig. 1 is an overall configuration diagram of the present invention, Figs. 2 to 8 are diagrams showing a first embodiment of the invention, Fig. 2 is a schematic configuration diagram thereof, and Fig. 3 is an exploded perspective view of the lean sensor. , Fig. 4 is a cross-sectional view of the lean sensor, Fig. 5
Fig. 6 is a block diagram of the control unit, Fig. 6 is a circuit diagram of its air-fuel ratio detection circuit, Fig. 7 is a flowchart showing the air-fuel ratio control program, and Fig. 9 shows a second embodiment of the present invention. FIG. 2 is a cross-sectional view of the lean sensor shown in FIG. 1... Engine, 12, 81... Lean sensor, 45... Air-fuel ratio detection circuit (concentration measuring means), 4
6...Microcomputer (discrimination means).
Claims (1)
が供給される酸素センサと、 ｂ 酸素センサに供給するポンプ電流の値に基づ
いて被測定ガスの酸素濃度を検出する濃度測定手
段と、 ｃ 濃度測定手段の出力およびその変化量に基づ
いて酸素センサまたは濃度測定手段が異常である
か否かを判別する判別手段と、 を備えたことを特徴とする酸素濃度測定装置。[Scope of Claim for Utility Model Registration] a. An oxygen sensor to which a pump current that correlates to the oxygen concentration of the gas to be measured is supplied, and b. The oxygen concentration of the gas to be measured is detected based on the value of the pump current supplied to the oxygen sensor. An oxygen concentration measuring device comprising: a concentration measuring means; and c. a determining means for determining whether or not the oxygen sensor or the concentration measuring means is abnormal based on the output of the concentration measuring means and the amount of change thereof. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18907284U JPS61102955U (en) | 1984-12-12 | 1984-12-12 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18907284U JPS61102955U (en) | 1984-12-12 | 1984-12-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61102955U true JPS61102955U (en) | 1986-07-01 |
Family
ID=30746531
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18907284U Pending JPS61102955U (en) | 1984-12-12 | 1984-12-12 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61102955U (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5246890A (en) * | 1975-10-13 | 1977-04-14 | Nissan Motor Co Ltd | Circuit for detecting roubles of oxygen sensors |
| JPS5277930A (en) * | 1975-12-25 | 1977-06-30 | Nissan Motor Co Ltd | Air-fuel ratio controller |
| JPS5277931A (en) * | 1975-12-25 | 1977-06-30 | Nissan Motor Co Ltd | Air-fuel ratio controller |
| JPS5330386B2 (en) * | 1974-01-17 | 1978-08-26 | ||
| JPS56130649A (en) * | 1980-03-03 | 1981-10-13 | Ford Motor Co | Method of measuring oxygen partial pressure and electrochemical apparatus therefor |
| JPS59192955A (en) * | 1984-03-06 | 1984-11-01 | Mitsubishi Electric Corp | Air fuel ratio sensor |
| JPS59197851A (en) * | 1983-04-26 | 1984-11-09 | Ngk Insulators Ltd | Electrochemical element and apparatus |
-
1984
- 1984-12-12 JP JP18907284U patent/JPS61102955U/ja active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5330386B2 (en) * | 1974-01-17 | 1978-08-26 | ||
| JPS5246890A (en) * | 1975-10-13 | 1977-04-14 | Nissan Motor Co Ltd | Circuit for detecting roubles of oxygen sensors |
| JPS5277930A (en) * | 1975-12-25 | 1977-06-30 | Nissan Motor Co Ltd | Air-fuel ratio controller |
| JPS5277931A (en) * | 1975-12-25 | 1977-06-30 | Nissan Motor Co Ltd | Air-fuel ratio controller |
| JPS56130649A (en) * | 1980-03-03 | 1981-10-13 | Ford Motor Co | Method of measuring oxygen partial pressure and electrochemical apparatus therefor |
| JPS59197851A (en) * | 1983-04-26 | 1984-11-09 | Ngk Insulators Ltd | Electrochemical element and apparatus |
| JPS59192955A (en) * | 1984-03-06 | 1984-11-01 | Mitsubishi Electric Corp | Air fuel ratio sensor |