JPS6352939U - - Google Patents
Info
- Publication number
- JPS6352939U JPS6352939U JP14583886U JP14583886U JPS6352939U JP S6352939 U JPS6352939 U JP S6352939U JP 14583886 U JP14583886 U JP 14583886U JP 14583886 U JP14583886 U JP 14583886U JP S6352939 U JPS6352939 U JP S6352939U
- Authority
- JP
- Japan
- Prior art keywords
- fuel ratio
- air
- feedback control
- engine
- oxygen sensor
- 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 9
- 229910052760 oxygen Inorganic materials 0.000 claims description 5
- 239000001301 oxygen Substances 0.000 claims description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 4
- 238000002485 combustion reaction Methods 0.000 claims 2
- 239000000203 mixture Substances 0.000 claims 1
- 150000002926 oxygen Chemical class 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 7
- 230000001186 cumulative effect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
Landscapes
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Description
第１図は本考案の構成を示す機能ブロツク図、
第２図は本考案の一実施例を示すシステム図、第
３図〜第５図は制御内容を示すフローチヤート、
第６図は比例・積分制御の様子を示す図、第７図
は酸素センサの出力電圧特性図、第８図は従来の
積算走行距離に対する空燃比変化を示す図、第９
図は空燃比に対する有害成分排出量の特性図であ
る。
１……機関、８……燃料噴射弁、１３……酸素
センサ、１７……車速センサ、１９……コントロ
ールユニツト。
Figure 1 is a functional block diagram showing the configuration of the present invention.
Fig. 2 is a system diagram showing an embodiment of the present invention, Figs. 3 to 5 are flow charts showing control contents,
Figure 6 is a diagram showing the state of proportional/integral control, Figure 7 is a diagram showing the output voltage characteristics of the oxygen sensor, Figure 8 is a diagram showing the change in air-fuel ratio with respect to the conventional cumulative mileage, and Figure 9 is a diagram showing the state of proportional/integral control.
The figure is a characteristic diagram of harmful component emissions with respect to air-fuel ratio. 1... Engine, 8... Fuel injection valve, 13... Oxygen sensor, 17... Vehicle speed sensor, 19... Control unit.
Claims (1)
吸入混合気の空燃比に応じた信号を出力する酸素
センサと、この酸素センサからの信号に基づいて
検出される空燃比を理論空燃比に一致させるよう
機関への燃料供給量をフイードバツク制御するフ
イードバツク制御手段とを備える内燃機関の空燃
比フイードバツク制御装置において、酸素センサ
の劣化度合を検出する酸素センサ劣化度合検出手
段と、劣化度合に応じて前記フイードバツク制御
手段によるフイードバツク制御のリツチ側及びリ
ーン側での制御速度を可変とする制御速度可変手
段とを設けたことを特徴とする内燃機関の空燃比
フイードバツク制御装置。 An oxygen sensor that reacts to the oxygen concentration in the engine exhaust and outputs a signal corresponding to the air-fuel ratio of the engine intake mixture, and the air-fuel ratio detected based on the signal from this oxygen sensor is matched to the stoichiometric air-fuel ratio. The air-fuel ratio feedback control device for an internal combustion engine includes: a feedback control means for feedback controlling the amount of fuel supplied to the engine; 1. An air-fuel ratio feedback control device for an internal combustion engine, comprising control speed variable means for varying the control speed on the rich side and lean side of feedback control by the control means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14583886U JPS6352939U (en) | 1986-09-25 | 1986-09-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14583886U JPS6352939U (en) | 1986-09-25 | 1986-09-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6352939U true JPS6352939U (en) | 1988-04-09 |
Family
ID=31057735
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14583886U Pending JPS6352939U (en) | 1986-09-25 | 1986-09-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6352939U (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5281435A (en) * | 1975-12-27 | 1977-07-07 | Nissan Motor Co Ltd | Air fuel ratio controller |
| JPS5433916A (en) * | 1977-08-22 | 1979-03-13 | Nissan Motor Co Ltd | Air-fuel ratio control device |
| JPS5835643B2 (en) * | 1974-10-23 | 1983-08-04 | 松下電工株式会社 | Kaitenshiki Bakarikinokadoha |
-
1986
- 1986-09-25 JP JP14583886U patent/JPS6352939U/ja active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5835643B2 (en) * | 1974-10-23 | 1983-08-04 | 松下電工株式会社 | Kaitenshiki Bakarikinokadoha |
| JPS5281435A (en) * | 1975-12-27 | 1977-07-07 | Nissan Motor Co Ltd | Air fuel ratio controller |
| JPS5433916A (en) * | 1977-08-22 | 1979-03-13 | Nissan Motor Co Ltd | Air-fuel ratio control device |
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