JPS6427653U - - Google Patents
Info
- Publication number
- JPS6427653U JPS6427653U JP12132387U JP12132387U JPS6427653U JP S6427653 U JPS6427653 U JP S6427653U JP 12132387 U JP12132387 U JP 12132387U JP 12132387 U JP12132387 U JP 12132387U JP S6427653 U JPS6427653 U JP S6427653U
- Authority
- JP
- Japan
- Prior art keywords
- signal
- maximum value
- nox
- gas sensor
- exhaust gas
- 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 3
- 238000001514 detection method Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 8
- 239000003054 catalyst 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 Electric Means (AREA)
Description
第１図は本考案のクレーム対応図、第２図は本
考案の一実施例の制御系のシステム図、第３図は
この実施例のコントロールユニツトのブロツク図
、第４図はこの実施例の演算内容を示す流れ図、
第５図と第６図はそれぞれこの実施例の作用を説
明するための空燃比とＮＯｘ濃度に対するＮＯｘ
信号の特性図である。第７図は先願の排気ガスセ
ンサの回路構成図、第８図は先願のガスセンサの
出力する起電力特性図、第９図は先願のＮＯｘ信
号の特性図である。
１……排気ガスセンサ、４……所定範囲判定手
段、５……最大値検出手段、６……補正手段、２
３……絞り弁、２４……空気量センサ、２５……
クランク角センサ、２６……排気ガスセンサ、３
３……三元触媒装置、３５……燃料噴射弁、４０
……コントロールユニツト。
Fig. 1 is a diagram corresponding to claims of the present invention, Fig. 2 is a system diagram of a control system of an embodiment of the invention, Fig. 3 is a block diagram of the control unit of this embodiment, and Fig. 4 is a diagram of the control system of this embodiment. A flowchart showing the calculation contents,
FIGS. 5 and 6 show NOx relative to air-fuel ratio and NOx concentration, respectively, to explain the action of this embodiment.
It is a characteristic diagram of a signal. FIG. 7 is a circuit configuration diagram of the exhaust gas sensor of the earlier application, FIG. 8 is a characteristic diagram of the electromotive force outputted by the gas sensor of the earlier application, and FIG. 9 is a characteristic diagram of the NOx signal of the earlier application. DESCRIPTION OF SYMBOLS 1... Exhaust gas sensor, 4... Predetermined range determination means, 5... Maximum value detection means, 6... Correction means, 2
3... Throttle valve, 24... Air amount sensor, 25...
Crank angle sensor, 26...Exhaust gas sensor, 3
3...Three-way catalyst device, 35...Fuel injection valve, 40
...control unit.
Claims (1)
センサと、Ａ／Ｆ信号が所定の空燃比範囲内にあ
るかどうかを判定する手段と、所定範囲内にある
ことが判定された場合に前記ＮＯｘ信号の最大値
を検出する手段と、検出された最大値に応じてＮ
Ｏｘ信号を補正する手段とを設けたことを特徴と
するＮＯｘ濃度検出装置。 an exhaust gas sensor that outputs an A/F signal and a NOx signal; a means for determining whether the A/F signal is within a predetermined air-fuel ratio range; means for detecting the maximum value of the signal and N depending on the detected maximum value;
1. A NOx concentration detection device, comprising means for correcting an Ox signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12132387U JPS6427653U (en) | 1987-08-07 | 1987-08-07 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12132387U JPS6427653U (en) | 1987-08-07 | 1987-08-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6427653U true JPS6427653U (en) | 1989-02-17 |
Family
ID=31368225
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12132387U Pending JPS6427653U (en) | 1987-08-07 | 1987-08-07 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6427653U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014098658A (en) * | 2012-11-15 | 2014-05-29 | Ngk Spark Plug Co Ltd | Nox detector and nox sensor system |
-
1987
- 1987-08-07 JP JP12132387U patent/JPS6427653U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014098658A (en) * | 2012-11-15 | 2014-05-29 | Ngk Spark Plug Co Ltd | Nox detector and nox sensor system |
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