JPS6082263U - Air fuel ratio detection device - Google Patents
Air fuel ratio detection deviceInfo
- Publication number
- JPS6082263U JPS6082263U JP17464583U JP17464583U JPS6082263U JP S6082263 U JPS6082263 U JP S6082263U JP 17464583 U JP17464583 U JP 17464583U JP 17464583 U JP17464583 U JP 17464583U JP S6082263 U JPS6082263 U JP S6082263U
- Authority
- JP
- Japan
- Prior art keywords
- fuel ratio
- air
- oxygen sensor
- detection device
- ratio detection
- 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
Landscapes
- Measuring Oxygen Concentration In Cells (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は従来の空燃比検出装置を示すその酸素センサの
断面図、第２〜６図は本考案の第１実施例を示す図であ
り、第２図はその酸素センサの断面図、第３図はその回
路構成図、第４図はその第１酸素センサのＶｓ −Ａ
／ Ｆ特性図、第５図はその第２酸素センザのＶｓ −
Ａ ／ Ｆ特性図、第６図はその差値ＶＮと空燃比との
関係を示す図、第７．８図は本考案の第２実施例を示す
図であり、第７図はその酸素センサの断面図、第８図は
その差値ＶＮと空燃比との関係を示す図である。
２０・・・・・・第１酸素センサ、２１・・・・・・第
２酸素センサ、３２・・・・・・坊較器（比較手段）、
３３・・・・・・ホールド手段、３４・・・・・・空燃
比検出手段。Fig. 1 is a sectional view of an oxygen sensor showing a conventional air-fuel ratio detection device, Figs. 2 to 6 are views showing a first embodiment of the present invention, and Fig. 2 is a sectional view of the oxygen sensor. Figure 3 is the circuit configuration diagram, and Figure 4 is the Vs-A of the first oxygen sensor.
/ F characteristic diagram, Figure 5 shows the Vs − of the second oxygen sensor.
A/F characteristic diagram, Figure 6 is a diagram showing the relationship between the difference value VN and the air-fuel ratio, Figure 7.8 is a diagram showing the second embodiment of the present invention, and Figure 7 is the oxygen sensor. 8 is a diagram showing the relationship between the difference value VN and the air-fuel ratio. 20...First oxygen sensor, 21...Second oxygen sensor, 32...Comparator (comparison means),
33...Holding means, 34...Air-fuel ratio detection means.
Claims (1)
緩やかに変化する第１酸素センサと、排気中の酸素濃度
を検出し所定空燃比において出力電圧の急変する第２酸
素センサと、該第２酸素センサの出力を比較基準値と比
較して所定空燃比を検出する比較手段と、該比較手段に
より所定空燃比が検出されているときの前記第１酸素セ
ンサの出力をホールドするホールド手段と、前記第１酸
素センサおよび前記ホールド手段の出力に基づいて現空
燃比の所定空燃比からのすれの大きさを演算し空燃比を
検出する空燃比検出手段と、を備えたことを特徴とする
空燃比検出装置。a first oxygen sensor that detects the oxygen concentration in the exhaust gas and whose output voltage changes gradually according to the oxygen concentration; a second oxygen sensor that detects the oxygen concentration of the exhaust gas and whose output voltage changes suddenly at a predetermined air-fuel ratio; Comparing means for detecting a predetermined air-fuel ratio by comparing the output of the second oxygen sensor with a comparison reference value; and holding means for holding the output of the first oxygen sensor when the predetermined air-fuel ratio is detected by the comparing means. and air-fuel ratio detection means for calculating the deviation of the current air-fuel ratio from a predetermined air-fuel ratio based on the outputs of the first oxygen sensor and the holding means and detecting the air-fuel ratio. Air-fuel ratio detection device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17464583U JPS6082263U (en) | 1983-11-11 | 1983-11-11 | Air fuel ratio detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17464583U JPS6082263U (en) | 1983-11-11 | 1983-11-11 | Air fuel ratio detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6082263U true JPS6082263U (en) | 1985-06-07 |
Family
ID=30380157
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17464583U Pending JPS6082263U (en) | 1983-11-11 | 1983-11-11 | Air fuel ratio detection device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6082263U (en) |
-
1983
- 1983-11-11 JP JP17464583U patent/JPS6082263U/en active Pending
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