JPS5888428A - Control method of fuel injection - Google Patents
Control method of fuel injectionInfo
- Publication number
- JPS5888428A JPS5888428A JP18763581A JP18763581A JPS5888428A JP S5888428 A JPS5888428 A JP S5888428A JP 18763581 A JP18763581 A JP 18763581A JP 18763581 A JP18763581 A JP 18763581A JP S5888428 A JPS5888428 A JP S5888428A
- Authority
- JP
- Japan
- Prior art keywords
- fuel injection
- engine
- injection control
- calculation
- control pulse
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/04—Introducing corrections for particular operating conditions
- F02D41/06—Introducing corrections for particular operating conditions for engine starting or warming up
- F02D41/062—Introducing corrections for particular operating conditions for engine starting or warming up for starting
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は自動車エンジン用電子燃料制御装装置等におけ
る燃料噴射制御方法に関するもので、エンジンの始動性
能を向上させることを目的とする。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a fuel injection control method in an electronic fuel control system for an automobile engine, and an object of the present invention is to improve engine starting performance.
マイクロコンビーータを用いたこの種の装置はエンジン
の運転条件に関する各種情報〔機関パラメータ、たとえ
ばエンジン回転数、吸入空気量、冷却水温、吸気温度、
バッテリ電圧等〕を入力し、これら情報にもとづいて基
本燃料噴射量、および各種補正係数を計算し、これらか
ら現在のエンジン運転条件に最適な燃料噴射量を出力す
るためのインジェクタ駆動用燃料噴射制御パルス巾を算
出し、燃料噴射開始タイミングで制御パルスを出力する
ものである。This type of device using a microcombinator collects various information regarding engine operating conditions [engine parameters such as engine speed, intake air amount, cooling water temperature, intake air temperature,
A fuel injection control system for driving injectors that inputs battery voltage, etc., calculates the basic fuel injection amount and various correction coefficients based on this information, and outputs the optimal fuel injection amount for the current engine operating conditions from these. It calculates the pulse width and outputs a control pulse at the fuel injection start timing.
従来、この種の装置においては始動時の最初から何面か
の燃料噴射タイミングにおいて前記各種情報が全て入力
されていない状態にあるか、あるいは全て入力されてい
てもこれら情報にもとづいて燃料噴射制御パルス巾の計
算が完了していない場合の対策としτたとえば次のよう
な方法がとられている。Conventionally, in this type of device, all of the above-mentioned information has not been input at several fuel injection timings from the beginning at startup, or even if all of the information has been input, fuel injection control is not performed based on this information. As a countermeasure when the calculation of the pulse width is not completed, for example, the following method is taken.
ここで燃料噴射制御パルス巾τの算出ＶＣハ入力情報１
１． Ｉ２． Ｉ３． Ｉ４． Ｉ６が必要であり、こ
のうち基本噴射量τ。の算出に必要な情報１１．Ｉ２は
燃料噴射タイミングに同期して入力し、補正係数に３．
Ｉ４ふ）よびτ１算出に必要な情報Ｉ３． Ｉ４゜Ｉ
６は燃料噴射タイミングと非同期で空き時間に入力にそ
のすぐ後に補正係数に３．に４およびτ１の算出をそれ
ぞれおこなうものとする。Here, calculate the fuel injection control pulse width τ VC input information 1
1. I2. I3. I4. I6 is required, of which the basic injection amount τ. Information necessary for calculation 11. I2 is input in synchronization with the fuel injection timing, and the correction coefficient is set to 3.
Information necessary for I4 f) and τ1 calculation I3. I4゜I
6 is asynchronous to the fuel injection timing, and is input during free time, and immediately after that, 3 is input to the correction coefficient. 4 and τ1 are calculated respectively.
燃料噴射制御パルス巾τ＝τ。×に３×に４＋τ１の計
算は前記入力情報Ｉ、、、Ｉ２を入力に基本噴射量τ。Fuel injection control pulse width τ=τ. The calculation of x to 3 x to 4 + τ1 is based on the input information I, , I2 and the basic injection amount τ.
を算出した後引き続き行い、計算が完了した後直ちに出
力を開始するものとする。After the calculation is completed, the calculation is continued, and the output is started immediately after the calculation is completed.
第１図はそのフロチャートを示す。FIG. 1 shows the flowchart.
まず装置は電源ＯＮＩ、た際まず燃料噴射制御パルス巾
、前記各種入力情報値を初期設定する。First, when the power is turned on, the device initializes the fuel injection control pulse width and the various input information values.
次に燃料噴射制御パルス巾の計算は前記初期仮設定され
た、あるいは入力された各種情報にもとづく基本噴射量
および補正係数により行う。Next, the fuel injection control pulse width is calculated using the basic injection amount and correction coefficient based on the initial provisional setting or input various information.
次に前記燃料噴射制御パルス巾の計算〔正しくは補正係
数の計算〕が完了する前に燃料噴射開始タイミングにな
ったときは前記初期仮設定された燃料噴射制御パルス巾
を出力する。Next, when the fuel injection start timing comes before the calculation of the fuel injection control pulse width (correctly, the calculation of the correction coefficient) is completed, the initially provisionally set fuel injection control pulse width is output.
しかしこの方法では次のような問題が残る。However, the following problems remain with this method.
・（＋） 初期仮設定された燃料噴射制御パルス巾は
全てのエンジン運転条件下での良好な始動性を示す燃料
噴射制御パルス巾とはなり得ない。- (+) The initially provisionally set fuel injection control pulse width cannot be a fuel injection control pulse width that shows good startability under all engine operating conditions.
（１１）計算された燃料噴射制御パルス巾もその計算の
基礎とする各種情報として初期仮設定された値を用いた
場合前記のものと大同小異の結果となる。(11) If the calculated fuel injection control pulse width is also the initially provisionally set value as the various information on which the calculation is based, the result will be almost the same as the above one.
（ｉｉｉ） 燃料噴射制御パルス巾、各種情報の初期
仮設定をおこなう場合、そのためのプログラムが必要に
なる。(iii) When performing initial provisional settings for the fuel injection control pulse width and various information, a program for this purpose is required.
本発明は上述した従来の欠点を除去したものである。以
下にその実施例と共に説明する。第２図は本発明の一実
施例によるフローチャートであって、第１図に示したも
のに比べ次のような特徴を有している。The present invention eliminates the above-mentioned drawbacks of the prior art. This will be explained below along with examples. FIG. 2 is a flowchart according to an embodiment of the present invention, which has the following features compared to that shown in FIG.
（１）燃料噴射制御パルス巾、および各種入力情報の初
期仮設定はおこなわない。(1) Initial provisional settings for the fuel injection control pulse width and various input information are not performed.
（ＩＩ）装置の電源ＯＮ後、各種情報のとりこみ、前記
とりこまれた各種情報にもとづいての各種補正係数の計
算が−通り終了するまでの間は燃料噴射制御パルスを出
力しない。(II) After the device is powered on, the fuel injection control pulse is not output until the loading of various information and the calculation of various correction coefficients based on the loaded information are completed.
即ち装置の電源ＯＮ直後は燃料噴射制御パルス巾および
各種情報の初期仮設定を省いて各種入力情報のとりこみ
、および各種補正係数の算出をおこない、必要な各種入
力情報Ｉ３． Ｉ４． Ｉ５のとりこみ、および各種補
正係数の算出が−通り終了する前に燃料噴射タイミング
になっても燃料噴射パルスは出力しない。しかし一般的
には始動時のエンジン回転数は低い〔従って燃料噴射タ
イミングの周期は長い〕ことから、エンジンが始動して
から２回目の燃料噴射タイミングで、は前記各種人力情
報のとシこみおよび補正係数の算出は完了し、エンジン
運転条件に適合したパルス巾の燃料噴射制御ノくルスが
出力できる。That is, immediately after the device is powered on, the initial temporary settings of the fuel injection control pulse width and various information are omitted, and various input information is imported and various correction coefficients are calculated, and various necessary input information I3. I4. Even if the fuel injection timing comes before the import of I5 and the calculation of various correction coefficients are completed, no fuel injection pulse is output. However, since the engine speed is generally low at startup (therefore the cycle of fuel injection timing is long), at the second fuel injection timing after the engine has started, the various manual input information and the Calculation of the correction coefficient is completed, and a fuel injection control pulse with a pulse width suitable for the engine operating conditions can be output.
特にエンジン回転数を前記装置に入力する燃料噴射タイ
ミングパルス周期から計測し、この結果を燃料噴射制御
パルス中の算出に用いる場合、燃料噴射はエンジン始動
後２回目以降の燃料噴射タイミングとなる。In particular, when the engine rotational speed is measured from the fuel injection timing pulse cycle input to the device and the result is used to calculate the fuel injection control pulse, the fuel injection will be performed at the second or later fuel injection timing after the engine is started.
以上のような方法により、一定パルス巾の燃料噴射パル
スをエンジン始動後筒１ロ目の燃料噴射タイミングで出
力するよりも〔まして第２回目以降の噴射タイミングで
エンジン運転条件に必ずしも適合していないパルス巾の
燃料噴射制御）くルスを出力するよりも〕始動性が向上
しかつ一定値の燃料噴射制御パルス巾および各種情報を
初期仮設定するためのプロダラムよりも削除できること
になる。By using the method described above, it is possible to avoid outputting a fuel injection pulse with a constant pulse width at the fuel injection timing of the first cylinder after the engine starts [and even more so, since the second and subsequent injection timings do not necessarily match the engine operating conditions. The starting performance is improved (compared to outputting a pulse width fuel injection control pulse width), and it is possible to eliminate the need for a program for initially setting a fixed value of the fuel injection control pulse width and various information.
本発明におけるプログラムハ晶記装置への電源ＯＮ直後
第１回目の燃料噴射制御パルス巾の計算が終了するまで
の間の燃料噴射を禁 するプログラムを従来のものに付
加するだけでよい。The program of the present invention can be simply added to the conventional program by adding a program that prohibits fuel injection until the calculation of the first fuel injection control pulse width is completed immediately after the power is turned on to the recording device.
以上の説明から明らかなように本発明によればマイクロ
コンビーータの制御プログラムを一部変更するだけでエ
ンジンの始動性能の向上がはかれるとともに制御プログ
ラムそのものも削減でき、有利である。As is clear from the above description, the present invention is advantageous in that engine starting performance can be improved by only partially changing the control program of the microcombinator, and the control program itself can be reduced.
【図面の簡単な説明】
第１図は従来の燃料噴射制御方法におけるフローチャー
ト、第２図は本発明の一実施例における燃料噴射制御方
法に用いるフローチャートである。
代理人の氏名 弁理士 中 尾 敏 男 ほか１名第１
図
第２図BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a flowchart of a conventional fuel injection control method, and FIG. 2 is a flowchart used in a fuel injection control method according to an embodiment of the present invention. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 2
Claims (1)
ータの入力、およびそのパラメータにもとず〈燃料噴射
制御パルス巾の計算が完了するまでの間燃料噴射制御パ
ルスの出力を禁止することを特徴とする燃料噴射制御方
法。It is characterized by inputting all the engine parameters necessary for calculating the fuel injection control pulse width, and prohibiting the output of the fuel injection control pulse until the calculation of the fuel injection control pulse width is completed based on the parameters. A fuel injection control method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18763581A JPS5888428A (en) | 1981-11-20 | 1981-11-20 | Control method of fuel injection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18763581A JPS5888428A (en) | 1981-11-20 | 1981-11-20 | Control method of fuel injection |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5888428A true JPS5888428A (en) | 1983-05-26 |
| JPH0229853B2 JPH0229853B2 (en) | 1990-07-03 |
Family
ID=16209556
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18763581A Granted JPS5888428A (en) | 1981-11-20 | 1981-11-20 | Control method of fuel injection |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5888428A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006008975A1 (en) * | 2004-07-22 | 2006-01-26 | Mikuni Corporation | Method and device for controlling fuel injection of engine |
| ES2255367A1 (en) * | 2002-11-11 | 2006-06-16 | Honda Giken Kogyo Kabushiki Kaisha | Engine fuel injection control system |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5560658A (en) * | 1978-10-27 | 1980-05-07 | Mitsubishi Electric Corp | Control device for internal-combustion engine |
-
1981
- 1981-11-20 JP JP18763581A patent/JPS5888428A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5560658A (en) * | 1978-10-27 | 1980-05-07 | Mitsubishi Electric Corp | Control device for internal-combustion engine |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2255367A1 (en) * | 2002-11-11 | 2006-06-16 | Honda Giken Kogyo Kabushiki Kaisha | Engine fuel injection control system |
| WO2006008975A1 (en) * | 2004-07-22 | 2006-01-26 | Mikuni Corporation | Method and device for controlling fuel injection of engine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0229853B2 (en) | 1990-07-03 |
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