JPH02127753U - - Google Patents
Info
- Publication number
- JPH02127753U JPH02127753U JP3754289U JP3754289U JPH02127753U JP H02127753 U JPH02127753 U JP H02127753U JP 3754289 U JP3754289 U JP 3754289U JP 3754289 U JP3754289 U JP 3754289U JP H02127753 U JPH02127753 U JP H02127753U
- Authority
- JP
- Japan
- Prior art keywords
- fuel injection
- engine
- fuel
- calculation means
- power supply
- 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 15
- 238000002347 injection Methods 0.000 claims description 10
- 239000007924 injection Substances 0.000 claims description 10
- 238000001514 detection method Methods 0.000 claims 6
- 238000010586 diagram Methods 0.000 description 5
Landscapes
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Description
第1図は本考案を実用新案登録請求の範囲に対
応して示す基本構成図、第2図は本考案に係るエ
ンジンの燃料噴射制御装置の一例を示す概略構成
図、第3図は第2図に示されるコントロールユニ
ツトにマイクロコンピユータが実行するプログラ
ムの一例を示すフローチヤート、第4図は第2図
に示される例の動作説明に供される特性図、第5
図及び第6図は、夫々、吸入空気量について設定
される上限値の説明に供される特性図である。
10……エンジン、18……スロツトル開度セ
ンサ、20……ホツトワイヤ式エアフローセンサ
、25……燃料噴射弁、30……(エンジン)回
転数センサ、35……バツテリ、100……コン
トロールユニツト。
Fig. 1 is a basic configuration diagram showing the present invention corresponding to the scope of the utility model registration claims, Fig. 2 is a schematic configuration diagram showing an example of an engine fuel injection control device according to the invention, and Fig. 3 is a basic configuration diagram showing an example of an engine fuel injection control device according to the invention. A flowchart showing an example of a program executed by a microcomputer on the control unit shown in the figure; FIG. 4 is a characteristic diagram for explaining the operation of the example shown in FIG. 2;
6 and 6 are characteristic diagrams for explaining the upper limit value set for the intake air amount, respectively. DESCRIPTION OF SYMBOLS 10...Engine, 18...Throttle opening sensor, 20...Hot wire type air flow sensor, 25...Fuel injection valve, 30...(engine) rotation speed sensor, 35...Battery, 100...Control unit.
Claims (1)
式エアフローセンサの出力に基づき吸入空気量を
計測して燃料噴射量を制御するエンジンの燃料噴
射制御装置に於て、エンジンに対する燃料供給を
行う燃料噴射手段と、上記ホツトワイヤ式エアフ
ローセンサからの検出信号に基づいて燃料噴射量
を算出する第1燃料演算手段と、エンジンの回転
数検出器からの検出信号と、スロツトル開度検出
器からの検出信号と、吸気管内圧力検出器からの
検出信号のうち少なくとも2つの検出信号に基づ
いて燃料噴射量を算出する第2燃料演算手段と、
エンジンの電源電圧を検出する電源電圧検出手段
と、該電源電圧検出手段で検出された電圧が所定
値以下の場合には、燃料噴射量を決定する手段を
第1燃料演算手段から第2燃料演算手段に切換え
る切換手段とを備えることを特徴とするエンジン
の燃料噴射制御装置。 In an engine fuel injection control device that controls the amount of fuel injection by measuring the amount of intake air based on the output of a hot wire air flow sensor disposed in the intake passage of the engine, there is a fuel injection means for supplying fuel to the engine. , a first fuel calculation means that calculates the fuel injection amount based on the detection signal from the hot wire airflow sensor, a detection signal from the engine rotation speed detector, a detection signal from the throttle opening detector, and an intake air flow sensor. a second fuel calculation means for calculating a fuel injection amount based on at least two detection signals from the pipe pressure detector;
power supply voltage detection means for detecting the power supply voltage of the engine; and when the voltage detected by the power supply voltage detection means is below a predetermined value, the means for determining the fuel injection amount is changed from the first fuel calculation means to the second fuel calculation means; 1. A fuel injection control device for an engine, comprising: switching means for switching between the two modes.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3754289U JPH02127753U (en) | 1989-03-31 | 1989-03-31 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3754289U JPH02127753U (en) | 1989-03-31 | 1989-03-31 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH02127753U true JPH02127753U (en) | 1990-10-22 |
Family
ID=31544750
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3754289U Pending JPH02127753U (en) | 1989-03-31 | 1989-03-31 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH02127753U (en) |
-
1989
- 1989-03-31 JP JP3754289U patent/JPH02127753U/ja active Pending