JPH021438U - - Google Patents
Info
- Publication number
- JPH021438U JPH021438U JP7775488U JP7775488U JPH021438U JP H021438 U JPH021438 U JP H021438U JP 7775488 U JP7775488 U JP 7775488U JP 7775488 U JP7775488 U JP 7775488U JP H021438 U JPH021438 U JP H021438U
- Authority
- JP
- Japan
- Prior art keywords
- fuel
- air
- supply amount
- fuel ratio
- detection means
- 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 25
- 238000001514 detection method Methods 0.000 claims description 9
- 238000002485 combustion reaction Methods 0.000 claims 4
- 238000013459 approach Methods 0.000 claims 1
- 239000000203 mixture Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Output Control And Ontrol Of Special Type Engine (AREA)
- 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ブロツク図、第
2図は、本考案の一実施例の構成を示す図、第3
図は、同上実施例における燃料供給量の演算を示
すフローチヤート、第4図は、同じく本考案に係
る燃料濃度検出手段のON,OFF制御を示すフ
ローチヤート、第5図及び第6図はその他の燃料
濃度検出手段のON,OFF制御を示すフローチ
ヤートである。
1…機関、2…エアフローメータ、3…クラン
ク角センサ、4…O2センサ、5…アルコールセ
ンサ、10…コントロールユニツト。
Figure 1 is a block diagram showing the configuration of the present invention, Figure 2 is a diagram showing the configuration of an embodiment of the present invention, and Figure 3 is a diagram showing the configuration of an embodiment of the present invention.
FIG. 4 is a flowchart showing the calculation of the fuel supply amount in the same embodiment as above, FIG. 4 is a flowchart showing ON/OFF control of the fuel concentration detection means according to the present invention, and FIGS. 5 and 6 are other diagrams. 3 is a flowchart showing ON/OFF control of the fuel concentration detection means of FIG. DESCRIPTION OF SYMBOLS 1... Engine, 2... Air flow meter, 3... Crank angle sensor, 4... O2 sensor, 5... Alcohol sensor, 10... Control unit.
Claims (1)
用可能な内燃機関の運転状態を検出する運転状態
検出手段と、該検出された運転状態に応じて基本
燃料供給量を演算する基本燃料供給量演算手段と
、機関に供給される燃料から、該燃料中の基準と
なる燃料の濃度を検出する燃料濃度検出手段と、
前記燃料濃度検出手段によつて検出される基準燃
料の濃度信号により、前記演算された基本燃料供
給量を補正する基本燃料供給量補正手段と、機関
に供給される混合気の空燃比を検出する空燃比検
出手段と、該空燃比検出手段からの空燃比検出信
号に基づいて、所定の運転時に空燃比を目標空比
に近づけるように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を備えてなる内燃
機関の空燃比制御装置において、前記フイードバ
ツク制御手段による燃料供給量のフイードバツク
制御が行われる所定の定常運転状態でフイードバ
ツク制御量の中心値を演算するフイードバツク制
御量中心値演算手段と、該フイードバツク制御量
の中心値の各回毎の演算値の変化量が設定値以上
のときに前記燃料濃度検出手段を作動させる作動
制御手段と、を含んで構成したことを特徴とする
内燃機関の空燃比制御装置。 Operating state detection means for detecting the operating state of an internal combustion engine that can be used by switching or mixing different types of fuel; and basic fuel supply amount calculation means for calculating a basic fuel supply amount according to the detected operating state. and fuel concentration detection means for detecting a reference fuel concentration in the fuel supplied to the engine;
Basic fuel supply amount correction means for correcting the calculated basic fuel supply amount based on the reference fuel concentration signal detected by the fuel concentration detection means, and detecting the air-fuel ratio of the air-fuel mixture supplied to the engine. An internal combustion engine comprising an air-fuel ratio detection means and a feedback control means for feedback-controlling the fuel supply amount so that the air-fuel ratio approaches the target air ratio during a predetermined operation based on the air-fuel ratio detection signal from the air-fuel ratio detection means. In an air-fuel ratio control device for an engine, a feedback control amount center value calculation means for calculating a center value of a feedback control amount in a predetermined steady operating state in which feedback control of a fuel supply amount by the feedback control means is performed; An air-fuel ratio control device for an internal combustion engine, characterized in that the air-fuel ratio control device for an internal combustion engine is configured to include operation control means for operating the fuel concentration detection means when the amount of change in the calculated value each time of the central value of
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7775488U JPH021438U (en) | 1988-06-14 | 1988-06-14 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7775488U JPH021438U (en) | 1988-06-14 | 1988-06-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH021438U true JPH021438U (en) | 1990-01-08 |
Family
ID=31302718
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7775488U Pending JPH021438U (en) | 1988-06-14 | 1988-06-14 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH021438U (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010209724A (en) * | 2009-03-09 | 2010-09-24 | Mitsubishi Electric Corp | Fuel injection device for internal combustion engine |
-
1988
- 1988-06-14 JP JP7775488U patent/JPH021438U/ja active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010209724A (en) * | 2009-03-09 | 2010-09-24 | Mitsubishi Electric Corp | Fuel injection device for internal combustion engine |
US8170775B2 (en) | 2009-03-09 | 2012-05-01 | Mitsubishi Electric Corporation | Fuel injection device for internal combustion engine |