JPH01148043U - - Google Patents
Info
- Publication number
- JPH01148043U JPH01148043U JP4453988U JP4453988U JPH01148043U JP H01148043 U JPH01148043 U JP H01148043U JP 4453988 U JP4453988 U JP 4453988U JP 4453988 U JP4453988 U JP 4453988U JP H01148043 U JPH01148043 U JP H01148043U
- Authority
- JP
- Japan
- Prior art keywords
- air
- fuel
- fuel ratio
- amount
- canister
- 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.)
- Granted
Links
- 239000000446 fuel Substances 0.000 claims description 28
- 238000001514 detection method Methods 0.000 claims description 6
- 238000002485 combustion reaction Methods 0.000 claims description 3
- 239000002828 fuel tank Substances 0.000 claims 1
- 238000002347 injection Methods 0.000 claims 1
- 239000007924 injection Substances 0.000 claims 1
- 239000000203 mixture Substances 0.000 claims 1
- 238000001179 sorption measurement Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
Landscapes
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Description
第１図は本考案の基本概念図、第２〜５図は本
考案に係る内燃機関の空燃比制御装置を示す図で
あり、第２図はその全体構成図、第３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
４図はその作用を説明するためのタイミングチヤ
ート、第５図はその給油ガンと燃料の関係を示す
タイミングチヤート、第６図はその第２の空燃比
補正係数と燃料量の相関関係を示すグラフ、第７
図は第６図に大気温度と大気圧力の要素を加えた
グラフ、第８図は従来の内燃機関の空燃比制御装
置の作用を説明するためのタイミングチヤートで
ある。
１……エンジン、２……インジエクタ（操作手
段）、３……酸素センサ（空燃比検出手段）、４
……コントロールユニツト（第１演算手段、第２
演算手段、制御手段）、６……燃料レベルセンサ
（燃料量検出手段）。
Figure 1 is a basic conceptual diagram of the present invention, Figures 2 to 5 are diagrams showing an air-fuel ratio control device for an internal combustion engine according to the present invention, Figure 2 is its overall configuration diagram, and Figure 3 is its air-fuel ratio. A flow chart showing the control program, Fig. 4 is a timing chart to explain its operation, Fig. 5 is a timing chart showing the relationship between the refueling gun and fuel, and Fig. 6 is the second air-fuel ratio correction coefficient. Graph showing the correlation between fuel amount and fuel amount, 7th
The figure is a graph obtained by adding elements of atmospheric temperature and atmospheric pressure to the graph shown in FIG. 6, and FIG. 8 is a timing chart for explaining the operation of a conventional air-fuel ratio control device for an internal combustion engine. 1...Engine, 2...Injector (operating means), 3...Oxygen sensor (air-fuel ratio detection means), 4
...Control unit (first calculation means, second
calculation means, control means), 6...fuel level sensor (fuel amount detection means).
Claims (1)
転中にキヤニスタのベーパ脱離を行うエンジンに
ついて、その吸入混合気の空燃比を検出する空燃
比検出手段と、 ｂ 燃料タンクの燃料量を検出する燃料量検出手
段と、 ｃ 空燃比検出手段の出力に基づいて空燃比を目
標空燃比に補正する第１の空燃比補正係数を演算
する第１演算手段と、 ｄ 燃料量検出手段の出力に基づいてキヤニスタ
の燃料蒸気吸着状態を推定し、キヤニスタによる
ベーパ濃度に応じて空燃比を補正する第２の空燃
比補正係数を演算する第２演算手段と、 ｅ 第１演算手段および第２演算手段の出力に基
づいて空燃比が目標空燃比となるように燃料の噴
射量又は吸入空気の流量を制御する制御値を演算
する制御手段と、 ｆ 制御手段の出力に基づいて燃料の噴射量又は
吸入空気の流量を操作する操作手段と、 を備えたことを特徴とする内燃機関の空燃比制
御装置。[Scope of Claim for Utility Model Registration] a. Air-fuel ratio detection means for detecting the air-fuel ratio of an intake air-fuel mixture in an engine that has a canister connected to an intake passage and vapor desorbs from the canister during operation; b. a fuel amount detection means for detecting the amount of fuel in the fuel tank; c. a first calculation means for calculating a first air-fuel ratio correction coefficient for correcting the air-fuel ratio to a target air-fuel ratio based on the output of the air-fuel ratio detection means; d a second calculation means for estimating the fuel vapor adsorption state of the canister based on the output of the fuel amount detection means and calculating a second air-fuel ratio correction coefficient for correcting the air-fuel ratio according to the vapor concentration by the canister; a control means for calculating a control value for controlling the amount of fuel injection or the flow rate of intake air so that the air-fuel ratio becomes the target air-fuel ratio based on the outputs of the calculation means and the second calculation means; f based on the output of the control means; An air-fuel ratio control device for an internal combustion engine, comprising: operating means for controlling the amount of fuel to be injected or the flow rate of intake air.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4453988U JPH0612235Y2 (en) | 1988-03-31 | 1988-03-31 | Air-fuel ratio controller for internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4453988U JPH0612235Y2 (en) | 1988-03-31 | 1988-03-31 | Air-fuel ratio controller for internal combustion engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01148043U true JPH01148043U (en) | 1989-10-13 |
| JPH0612235Y2 JPH0612235Y2 (en) | 1994-03-30 |
Family
ID=31270890
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4453988U Expired - Lifetime JPH0612235Y2 (en) | 1988-03-31 | 1988-03-31 | Air-fuel ratio controller for internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0612235Y2 (en) |
-
1988
- 1988-03-31 JP JP4453988U patent/JPH0612235Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0612235Y2 (en) | 1994-03-30 |
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