JPH02107744U - - Google Patents
Info
- Publication number
- JPH02107744U JPH02107744U JP386989U JP386989U JPH02107744U JP H02107744 U JPH02107744 U JP H02107744U JP 386989 U JP386989 U JP 386989U JP 386989 U JP386989 U JP 386989U JP H02107744 U JPH02107744 U JP H02107744U
- Authority
- JP
- Japan
- Prior art keywords
- fuel injection
- fuel
- engine
- injection
- determining
- 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 20
- 238000002347 injection Methods 0.000 claims description 20
- 239000007924 injection Substances 0.000 claims description 20
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 5
- 238000000034 method Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
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、本考案の構成図、第２図は、本考案
の一実施例を適用したエンジンの断面図、第３図
は、始動時の燃料噴射量の制御ルーチンのフロー
チヤート、第４図、アルコール濃度と燃料噴射係
数の関係を示すグラフ、第５図は、燃料噴射の制
御ルーチンのフローチヤート、第６図ａ，ｂ，ｃ
は、燃料噴射の指令信号を示し、第６図ａは従来
の指令信号、第６図ｂは本考案の一実施例におけ
る指令信号を示すグラフ、第６図ｃは本考案の他
の実施例における指令信号を示すグラフ、第７図
は一実施例における燃料噴射の指令信号と各気筒
の吸入行程との関係を示す図である。
２４…始動用燃料噴射弁、２９…アルコールセ
ンサ、３１…制御回路。
FIG. 1 is a configuration diagram of the present invention, FIG. 2 is a sectional view of an engine to which an embodiment of the present invention is applied, FIG. 3 is a flowchart of a control routine for fuel injection amount at startup, and FIG. Fig. 5 is a graph showing the relationship between alcohol concentration and fuel injection coefficient; Fig. 5 is a flowchart of the fuel injection control routine; Fig. 6 a, b, c
6 shows a command signal for fuel injection, FIG. 6a is a conventional command signal, FIG. 6b is a graph showing a command signal in one embodiment of the present invention, and FIG. 6c is a graph showing another embodiment of the present invention. FIG. 7 is a diagram showing the relationship between the command signal for fuel injection and the intake stroke of each cylinder in one embodiment. 24... Starting fuel injection valve, 29... Alcohol sensor, 31... Control circuit.
Claims (1)
おける燃料噴射を制御する装置であつて、エンジ
ンの冷間始動時に燃料噴射を行うために設けられ
、高濃度アルコール燃料に応じた量の燃料を噴射
可能な始動用燃料噴射弁と、エンジンの１回転毎
に上記始動用燃料噴射弁を駆動する手段と、燃料
のアルコール濃度を検出するアルコールセンサと
、アルコール濃度に応じて、上記始動用燃料噴射
弁の燃料噴射時間に対応した噴射係数を求める噴
射係数決定手段と、クランキングにおけるエンジ
ンの１回転当たりの所要時間を求める回転速度演
算手段と、上記所要時間と噴射係数を乗じて燃料
噴射時間を求める燃料噴射量決定手段とを備え、
上記駆動手段は、エンジンの１回転毎に、上記燃
料噴射量決定手段により求められた燃料噴射時間
だけ上記始動用燃料噴射弁を開弁させることを特
徴とする始動燃料噴射制御装置。 This is a device that controls fuel injection when the engine of an alcohol-mixed fuel vehicle is cold started, and is provided to perform fuel injection when the engine is cold started, and is capable of injecting an amount of fuel corresponding to the high concentration alcohol fuel. a starting fuel injection valve; a means for driving the starting fuel injection valve every revolution of the engine; an alcohol sensor for detecting the alcohol concentration of the fuel; an injection coefficient determination means for determining an injection coefficient corresponding to the injection time; a rotational speed calculation means for determining the time required per revolution of the engine during cranking; and a fuel injection method for determining the fuel injection time by multiplying the required time by the injection coefficient. and quantity determining means,
The starting fuel injection control device is characterized in that the driving means opens the starting fuel injection valve for the fuel injection time determined by the fuel injection amount determining means for each revolution of the engine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP386989U JPH02107744U (en) | 1988-10-31 | 1989-01-19 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14122988 | 1988-10-31 | ||
| JP386989U JPH02107744U (en) | 1988-10-31 | 1989-01-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02107744U true JPH02107744U (en) | 1990-08-28 |
Family
ID=31717047
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP386989U Pending JPH02107744U (en) | 1988-10-31 | 1989-01-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02107744U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007211659A (en) * | 2006-02-08 | 2007-08-23 | Toyota Motor Corp | Start control device for internal combustion engine |
-
1989
- 1989-01-19 JP JP386989U patent/JPH02107744U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007211659A (en) * | 2006-02-08 | 2007-08-23 | Toyota Motor Corp | Start control device for internal combustion engine |