JPS5818531A - Electronic fuel supply quantity controller for internal combustion engine - Google Patents
Electronic fuel supply quantity controller for internal combustion engineInfo
- Publication number
- JPS5818531A JPS5818531A JP11789982A JP11789982A JPS5818531A JP S5818531 A JPS5818531 A JP S5818531A JP 11789982 A JP11789982 A JP 11789982A JP 11789982 A JP11789982 A JP 11789982A JP S5818531 A JPS5818531 A JP S5818531A
- Authority
- JP
- Japan
- Prior art keywords
- internal combustion
- combustion engine
- fuel supply
- electronic fuel
- control device
- 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
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
- F02D41/061—Introducing corrections for particular operating conditions for engine starting or warming up the corrections being time dependent
-
- 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
-
- 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
- F02D41/064—Introducing corrections for particular operating conditions for engine starting or warming up for starting at cold start
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
本発明は内燃機関の電子燃料供給量制御装置、特に燃料
と空気の混合気の始動後の濃縮量を時間に従って変化さ
せるような出力量を時間に関係させて制御する装置を備
えた内燃機関の電子燃料供給量制御装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electronic fuel supply amount control device for an internal combustion engine, and in particular to a device for controlling an output amount in a time-related manner such that the enrichment amount of a fuel-air mixture after starting is changed over time. The present invention relates to an electronic fuel supply amount control device for an internal combustion engine equipped with the device.
例えば、ドイツ特許第２５２２２８３号から内燃機関に
供給される燃料と空気の混合気を始動時あるいは始動後
濃縮させる装置が知られており、この場合、始動に続い
た濃縮量は時間に従って減少されるようになっている。For example, a device is known from German Patent No. 2 522 283 for enriching the fuel-air mixture supplied to an internal combustion engine at or after starting, in which case the amount of enrichment following starting is reduced over time. It looks like this.
その場合、濃縮の初期値は温度に従って変えられている
。これは、例えば従来の装置では時間に従って減量を行
なう積分器の駆動電圧を温度に関係させて変化させるよ
うにすることによって行なわれている。In that case, the initial concentration value is varied according to the temperature. This is achieved, for example, in conventional devices by making the drive voltage of the time-decreasing integrator vary as a function of temperature.
しかし、このような従来の装置は、積分器に供給する駆
動電圧が必ずしも一定７でないので、十分満足する結果
を得ることができないという欠点があった。However, such a conventional device has the disadvantage that it is not possible to obtain sufficiently satisfactory results because the driving voltage supplied to the integrator is not necessarily constant.
従って本発明はこのような従来の欠点を除去するもので
、簡単な構成で積分器の駆動電圧が変動するような場合
でも、良好な結果をもたらし、信頼性のある内燃機関の
電子燃料供給量制御装置を提供することを目的とする。Therefore, the present invention eliminates these conventional drawbacks and provides a reliable electronic fuel supply amount for internal combustion engines, which provides good results even when the driving voltage of the integrator fluctuates with a simple configuration. The purpose is to provide a control device.
本発明によれば、この目的を達成するために、積分器と
して構成された演算増幅器を設け、この演算増幅器を極
性を逆にして接続された２つのダイオードならびに好ま
しくは抵抗から成る直列回路を介してバイパスするよう
にし、またこの両ダイオードの接続点に印加信号、例え
ばスタート信号を作用させるようにする構成を採用した
。このようにすることにより、始動後の濃縮を温度に関
係した初期値を持たせ、捷た時間に従って減量させるこ
とが可能になり、駆動電圧の変動を受けることが少なく
、確実に動作する始動彦いし始動後の濃縮を行なえる装
置が得られる。According to the invention, in order to achieve this objective, an operational amplifier configured as an integrator is provided, which is connected via a series circuit consisting of two diodes connected with opposite polarity and preferably a resistor. A configuration was adopted in which the diodes were bypassed, and an applied signal, for example, a start signal, was applied to the connection point between the two diodes. By doing this, the concentration after startup has an initial value related to temperature, and it is possible to reduce the amount according to the melting time, and it is possible to reduce the fluctuation of the drive voltage and ensure reliable operation of the startup. An apparatus capable of performing concentration after startup is obtained.
以下、図面に示す実施例に従って、本発明の詳細な説明
する。Hereinafter, the present invention will be described in detail according to embodiments shown in the drawings.
第１図には温度に従った始動濃縮ならびにそれに続く時
間に関係した始動後の濃縮の代表的な特性図が図示され
ておる。その場合、濃縮量は温度に関係しておシ、また
その濃縮量の減少は、時間の他に例えば回転速度のよう
な他の動作特性量にも関係している。それぞれ内燃機関
の種類に応じて、混合気が過剰に濃くなる危険性を避け
るために、また点火プラグが濡れてしまうことを避ける
ため、ならびにそのようになることから得られる悪い結
果を避けるために、全始動期間にわたって所定の燃料を
増量しないようにするのが好ましい。FIG. 1 shows a typical profile of the start-up enrichment as a function of temperature and the subsequent enrichment after start-up as a function of time. In that case, the enrichment amount is dependent on the temperature, and the decrease in the enrichment amount is dependent not only on the time but also on other operating variables, such as, for example, the rotational speed. In order to avoid the risk of the mixture becoming too rich, respectively, depending on the type of internal combustion engine, and in order to avoid the spark plug becoming wet, as well as to avoid the negative consequences obtained from doing so. , it is preferable not to increase the predetermined amount of fuel over the entire start-up period.
この理由から、第１図には実際の始動後の濃縮が実線で
示されておシ、場合によっては１回で済まされる始動濃
縮が点線で図示されている。第１図（ａ）と（ｂ）には
それぞれ始動後の濃縮における減量が図示されており、
第１図（ａ）の場合には終了時点が同じであり、また第
１図伽）の場合には減量の勾配が等しい。第１図に図示
されたような原理的な特性は、例えばすでに冒頭に述べ
たようにドイツ特許第２５２２２８３号に記載されてい
る。For this reason, the actual post-startup enrichment is shown in solid lines in FIG. 1, and the start-up enrichment, which may be required only once, is shown in dotted lines. Figures 1(a) and (b) illustrate the loss in concentration after startup, respectively;
In the case of FIG. 1(a), the end points are the same, and in the case of FIG. 1(a), the gradients of weight loss are the same. The basic characteristics as illustrated in FIG. 1 are described, for example, in DE 25 22 283, as already mentioned at the outset.
第２図には出力量、すなわち始動後の濃縮を時間に従っ
て制御する本発明による制御装置が図示されている。そ
の主要部は演算増幅器１０とそれと並列に接続されたコ
ンデンサ１１から成る積分器である。入力端子は符号１
２で示されており、この入力端子には動作特性量、例え
ば温度に関係した信号が入力される。この入力端子は抵
抗１３を介して演算増幅器１０のマイナス入力と接続さ
れる。この入力端子１２とアース線１４間に２つの抵抗
１５．１６から成る分圧器が接続されており、その接続
点は抵抗１７を介して演算増幅器１０のプラス入力と接
続される。演算増幅器１０の出力は抵抗１８．ダイオー
ド１９を介して出力端子２０に導かれる。プラス線は２
１で図示されており、そのプラス線２１とアース線１４
間には抵抗２２゜２３から形成される分圧器が接続され
る。この分圧器の中央端子は抵抗２４，２５か６成る直
列回路を介して演算増幅器の出力と接続されている。演
算増幅器１０のマイナス入力ならびに抵抗２４゜２５の
接続点はそれぞれダイオード２７．２８ を介して抵抗
２９の一端と接続されており、またその抵抗の他端はト
ランジスタ３０のコレクタと接続される。このトランジ
スタ３０のエミッタはアースに、またコレクタは抵抗３
１を介してプラス線と接続されると共にダイオード３２
を介して抵抗１８とダイ′オード１９の接続点と接続さ
れる。さらに入力端子１２とフリス線２１間に抵抗３４
゜３５から成る直列回路が接続され、これらの両抵抗３
４．３５の接続点は抵抗３６を介して演算増幅器１０の
マイナス入力と接続される。FIG. 2 shows a control device according to the invention for controlling the output quantity, ie the concentration after start-up, as a function of time. Its main part is an integrator consisting of an operational amplifier 10 and a capacitor 11 connected in parallel with it. The input terminal is code 1
2, to which a signal related to an operating characteristic quantity, for example temperature, is input. This input terminal is connected to the negative input of the operational amplifier 10 via a resistor 13. A voltage divider consisting of two resistors 15 and 16 is connected between this input terminal 12 and the ground line 14, and its connection point is connected to the positive input of the operational amplifier 10 via a resistor 17. The output of operational amplifier 10 is connected to resistor 18. It is led to an output terminal 20 via a diode 19. The positive wire is 2
1, its positive wire 21 and ground wire 14
A voltage divider formed from resistors 22 and 23 is connected between them. The center terminal of this voltage divider is connected via a series circuit of resistors 24, 25 or 6 to the output of the operational amplifier. The negative input of the operational amplifier 10 and the connection point between the resistors 24 and 25 are each connected to one end of a resistor 29 via a diode 27 and 28, and the other end of the resistor is connected to the collector of a transistor 30. The emitter of this transistor 30 is connected to ground, and the collector is connected to the resistor 3.
1 and is connected to the positive line through diode 32.
It is connected to the connection point between resistor 18 and diode 19 via. Furthermore, a resistor 34 is connected between the input terminal 12 and the fris wire 21.
A series circuit consisting of 35° is connected, and both of these resistors 3
The connection point 4.35 is connected to the negative input of the operational amplifier 10 via a resistor 36.
第２図に図示した回路において重要なことは、出力端子
２０の出力電圧賜の初期値が入力端子１２に入力される
電圧の関数であり、その関数が調整できることである。What is important in the circuit shown in FIG. 2 is that the initial value of the output voltage at output terminal 20 is a function of the voltage applied to input terminal 12, and that this function can be adjusted.
始゛動スイッチを操作し、それによってトランジスタ３
０のベースに正の駆動電圧が入力されると、抵抗２９．
ダイオード２７を介してコンデンサ１１に電流が流れ、
その結果演算増幅器１０の出力に現われる電圧は上昇す
る。この過程は演算増幅器１０の出力電位が所定の値に
達し、抵抗２９に流れる電流がダイオード２８を介して
得られるようになった時に終了する。このようにして演
算増幅器１０の出力信号に得られる最大値は分圧抵抗２
２゜２３の比に従って決められる。Operate the start switch, thereby turning on transistor 3.
When a positive drive voltage is input to the base of resistor 29.
Current flows into the capacitor 11 via the diode 27,
As a result, the voltage appearing at the output of operational amplifier 10 increases. This process ends when the output potential of the operational amplifier 10 reaches a predetermined value and the current flowing through the resistor 29 is available via the diode 28. In this way, the maximum value obtained for the output signal of the operational amplifier 10 is the voltage dividing resistor 2
It is determined according to the ratio of 2°23.
抵抗２２〜２５を選択することにより、第１図に示した
種々の信号特性が得られる。特に、両抵抗２２．２３の
値により始動後の濃縮開始時における出力信号の初期値
を決めることができ、捷た抵抗２４，２５を介して演算
増幅器の増幅率に変化を与えるようにすることができる
。この状態が第３図及び第４図に図示されており、各図
において入力端子１２ならびに演算増幅器１０の出力に
現われる電圧の特性が図示されている。第３図に図示し
た信号部分の初期の部分の値は抵抗１５，１６゜３４．
３５の組み合わせならびにそれぞれの値によって異なり
、またカーブの傾斜は抵抗２２．２３，２４゜２５の値
によって決められる。By selecting resistors 22-25, various signal characteristics shown in FIG. 1 can be obtained. In particular, the initial value of the output signal at the start of concentration after startup can be determined by the values of both resistors 22 and 23, and the amplification factor of the operational amplifier can be changed through the resistors 24 and 25. Can be done. This situation is illustrated in FIGS. 3 and 4, in which the characteristics of the voltage appearing at the input terminal 12 and at the output of the operational amplifier 10 are illustrated. The value of the initial part of the signal section shown in FIG. 3 is the resistance 15, 16° 34.
35 and their respective values, and the slope of the curve is determined by the values of the resistors 22, 23, 24° and 25.
第１図（ａ）に図示したような種々の減量勾配は、第２
図の例では抵抗（３４／３５）／（１５／１６）の比に
よって定められる。The various weight loss gradients as illustrated in FIG.
In the example shown, it is determined by the ratio of resistance (34/35)/(15/16).
また、上述した演算増幅器は、少なくとも入力信号が所
定の領域にある場合には増幅器として機能することが理
解される。It is also understood that the operational amplifier described above functions as an amplifier at least when the input signal is in a predetermined range.
さらに、ダイオード３２を介して演算増幅器１０の出力
信号ならびに抵抗１８によって決められる濃縮７アクタ
を始動期間抑圧させることができる。Furthermore, the output signal of the operational amplifier 10 via the diode 32 as well as the concentration 7 actuator determined by the resistor 18 can be suppressed during the start-up period.
このようにして第２図に示した装置を用いた場合、始動
後の濃縮に関して非常に良い結果が得られ、しかもこの
場合構成が簡単であり１．また安価なものとなるという
優れた効果が得られる。In this way, when the apparatus shown in FIG. 2 is used, very good results can be obtained regarding concentration after startup, and in this case, the configuration is simple, and 1. Moreover, the excellent effect of being inexpensive can be obtained.
第１図（ａ）、（ｂ）は始動濃縮及び始動後の濃縮を温
度や時間を関係して変化させた場合の特性を示した線図
、第２図は本発明装置の概略構成を示した回路図、第３
図及び第４図は第２図の動作を説明する特性曲線図であ
る。
１０・・・演算増幅器 ２７．２８・・・ダイオー
ドイム・モーツァルトヴエーク１
シャイム・イプテインゲン・イ
ム・シンマーライン１５Figures 1 (a) and (b) are diagrams showing the characteristics of starting concentration and post-starting concentration as they are varied in relation to temperature and time, and Figure 2 shows the schematic configuration of the device of the present invention. Circuit diagram, 3rd
2 and 4 are characteristic curve diagrams for explaining the operation of FIG. 2. 10...Operation amplifier 27.28...Diode im Mozartweg 1 Chaim Ibteingen im Simmerlein 15
Claims (6)
え、その場合、少なくともその初期値力５Ｉ動作特性量
に従って変化する内燃機関の電子燃料供給量制御装置に
おいて、入力電圧として印加され ゛る動作特性量に関
係した電圧を積分器として接続された演算増幅器（１０
）に供給するようにし、前記演算増幅器（１０）を極性
が逆になった２つのダイオード（２７，２８）及び好ま
しくは抵抗（２４）から成る直列回路を介してバイパス
させるようにし、また前記両ダイオード（２７，２８）
の接゛続点に印加電圧を作用させるようにした内−燃機
関の電子燃料供給量制御装置。(1) In an electronic fuel supply control device for an internal combustion engine, comprising a device for time-related control of the magnitude of the output, in which case the electronic fuel supply amount control device for an internal combustion engine varies at least in accordance with an operating characteristic quantity of its initial value 5I, which is applied as an input voltage. An operational amplifier (10
) and the operational amplifier (10) is bypassed via a series circuit consisting of two diodes (27, 28) of opposite polarity and preferably a resistor (24), and Diode (27, 28)
An electronic fuel supply amount control device for an internal combustion engine in which an applied voltage is applied to a connection point of an internal combustion engine.
囲第１項に記載の内燃機関の電子燃料供給量制御装置。(2) The electronic fuel supply amount control device for an internal combustion engine according to claim 1, wherein the applied signal is a starting signal.
性量に関係した信号を入力させるようにした特許請求の
範囲第１項に記載の内燃機関の電子燃料供給量制御装置
。(3) The electronic fuel supply amount control device for an internal combustion engine according to claim 1, wherein a signal related to the operating characteristic quantity is also input to the second input of the operational amplifier (10).
請求の範囲第１項又は第３項に記載の内燃機関の電子燃
料供給量制御装置。(4) The electronic fuel supply amount control device for an internal combustion engine according to claim 1 or 3, wherein the signal related to the operating characteristic quantity is a temperature signal.
して作動させるようにした特許請求の範囲第１項から第
４項に記載の内燃、機関の電子燃料供給量制御装置。(5) An electronic fuel supply amount control device for an internal combustion engine according to any one of claims 1 to 4, wherein the operational amplifier is operated as an amplifier in a predetermined range of an input signal.
置を燃料と空気の混合気を始動後濃縮させる装置に用い
るようにした特許請求の範囲第１項から第４項までのい
ずれか１項に記載の内燃機関の電子燃料供給量制御装置
。(6) Any one of claims 1 to 4, wherein the device for controlling the magnitude of the output in relation to time is used in a device for concentrating a mixture of fuel and air after starting. The electronic fuel supply amount control device for an internal combustion engine according to item 1.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19813128734 DE3128734A1 (en) | 1981-07-21 | 1981-07-21 | Fuel metering system for an internal combustion engine with open- or closed-loop electronic control |
| DE31287344 | 1981-07-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5818531A true JPS5818531A (en) | 1983-02-03 |
Family
ID=6137365
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11789982A Pending JPS5818531A (en) | 1981-07-21 | 1982-07-08 | Electronic fuel supply quantity controller for internal combustion engine |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPS5818531A (en) |
| DE (1) | DE3128734A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5946329A (en) * | 1982-08-25 | 1984-03-15 | Honda Motor Co Ltd | Controlling method for supplying fuel to internal- conbustion engine after starting |
| DE3322209A1 (en) * | 1983-06-21 | 1985-01-03 | Robert Bosch Gmbh, 7000 Stuttgart | Starting time limitation for internal combustion engines with fuel injection |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2522283C3 (en) * | 1975-05-20 | 1981-02-19 | Robert Bosch Gmbh, 7000 Stuttgart | Device for starting and / or post-starting enrichment of the fuel-air mixture fed to an internal combustion engine and formed by means of an electric fuel injection system |
-
1981
- 1981-07-21 DE DE19813128734 patent/DE3128734A1/en active Granted
-
1982
- 1982-07-08 JP JP11789982A patent/JPS5818531A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE3128734C2 (en) | 1990-01-11 |
| DE3128734A1 (en) | 1983-02-10 |
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