JPS6365166A - Fuel pump controller for internal combustion engine - Google Patents
Fuel pump controller for internal combustion engineInfo
- Publication number
- JPS6365166A JPS6365166A JP20966286A JP20966286A JPS6365166A JP S6365166 A JPS6365166 A JP S6365166A JP 20966286 A JP20966286 A JP 20966286A JP 20966286 A JP20966286 A JP 20966286A JP S6365166 A JPS6365166 A JP S6365166A
- Authority
- JP
- Japan
- Prior art keywords
- fuel pump
- fuel
- voltage
- terminal voltage
- target driving
- 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 title claims abstract description 79
- 238000002485 combustion reaction Methods 0.000 title claims description 7
- 238000002347 injection Methods 0.000 abstract description 2
- 239000007924 injection Substances 0.000 abstract description 2
- QHGVXILFMXYDRS-UHFFFAOYSA-N pyraclofos Chemical compound C1=C(OP(=O)(OCC)SCCC)C=NN1C1=CC=C(Cl)C=C1 QHGVXILFMXYDRS-UHFFFAOYSA-N 0.000 abstract 1
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229910017435 S2 In Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
Landscapes
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Abstract
Description
【発明の詳細な説明】
〈産業上の利用分野〉
本発明は、燃料タンクに貯留されている燃料を内燃機関
の燃料供給手段に給送する燃料ポンプの制御装置に関す
る。DETAILED DESCRIPTION OF THE INVENTION <Field of Industrial Application> The present invention relates to a control device for a fuel pump that supplies fuel stored in a fuel tank to fuel supply means of an internal combustion engine.
〈従来の技術〉
例えば、自動車用の内燃機関においては、燃料ポンプの
駆動量を、燃料の必要供給量等に基づいて必要最小限の
大きさに制御し、燃料ポンプの騒音及び消費電力を必要
最小限に抑えることが行われている。<Conventional technology> For example, in an internal combustion engine for an automobile, the driving amount of the fuel pump is controlled to the minimum necessary amount based on the required amount of fuel supplied, etc., and the noise and power consumption of the fuel pump is reduced as needed. Efforts are being made to minimize it.
例えば、アイドル運転時のような燃料の流量を多く必要
としない領域では燃料ポンプの端子電圧を下げること等
である。For example, the terminal voltage of the fuel pump may be lowered in areas where a large fuel flow rate is not required, such as during idling.
このような作用を実行する装置の一例としては、従来、
第３図に示すものがある。As an example of a device that performs such an action, conventionally,
There is one shown in Figure 3.
このものは、ＣＰＵ １からの出力信号により、バッテ
リ （電圧ＶＢ） と接続される燃料ポンプ２に直列
接続されるリレースイッチ３を０Ｎ−ＯＦＦし、更に、
ＣＰＵ １からの出力信号により、前記燃料ポンプ２に
直列接続される駆動抵抗４と並列接続されるリレースイ
ッチ５をＯＮ・ＯＦＦして燃料ポンプ２の端子電圧を変
化させるものである。This device uses an output signal from the CPU 1 to turn on and off a relay switch 3 connected in series to a fuel pump 2 connected to a battery (voltage VB), and further,
The terminal voltage of the fuel pump 2 is changed by turning ON/OFF a relay switch 5 connected in parallel with a driving resistor 4 connected in series to the fuel pump 2 in response to an output signal from the CPU 1.
く考案が解決しようとする問題点〉
しかし、このような従来の燃料ポンプの’Ｅ 御装置に
おいては、燃料ポンプ２の駆動量を、燃料の必要供給量
等に基づいて連続的に制御することはできず、しかも、
同一の電圧を燃料ポンプ２に印加したとしても、燃料ポ
ンプ２の経時変化によって燃料ポンプ２の回転数が増加
することが多いため、−ｉには燃料ポンプ２が必要以上
に高い回転数で運転されて騒音及び消費電力が必要以上
に高くなってしまうという問題点がある等制御性に劣る
ものであった。Problems to be solved by this invention> However, in such a conventional fuel pump 'E control device, the drive amount of the fuel pump 2 cannot be continuously controlled based on the required supply amount of fuel, etc. It is not possible, and
Even if the same voltage is applied to the fuel pump 2, the rotation speed of the fuel pump 2 often increases due to changes in the fuel pump 2 over time. However, there are problems in that the noise and power consumption are higher than necessary, and the controllability is poor.
そこで、本発明はかかる従来の実情に鑑み、燃料ポンプ
の駆動量を燃料の必要供給量等に基づいて連続的に制御
するようにしたものであって、燃料ポンプの回転数を常
に必要最小限度に抑えて騒音の抑制及び消費電力の削減
を図れ、更に、回路の簡略化等を図れる内燃機関の燃料
ポンプ制御装置を提供することを目的とする。Therefore, in view of the conventional situation, the present invention continuously controls the drive amount of the fuel pump based on the required supply amount of fuel, etc., and the rotation speed of the fuel pump is always kept at the minimum necessary level. An object of the present invention is to provide a fuel pump control device for an internal combustion engine, which can suppress noise and reduce power consumption by suppressing noise, and can also simplify the circuit.
く問題点を解決するための手段〉
このため、本発明は、バッテリと接続される燃料ポンプ
にトランジスタを直列接続して備え、前記燃料ポンプの
両端子の電圧がＡ／Ｄ変換器を介して入力され、燃料の
必要供給量から燃料ポンプの目標駆動電圧を算出し該目
標駆動電圧と燃料ポンプの両端子の電圧から検出される
実際の燃料ポンプの端子電圧とを比較して該端子電圧が
該目標駆動電圧となるよう前記トランジスタヘデューテ
イ制御信号を出力する機能を具備したマイクロコンピュ
ータを備えて構成した。Means for Solving the Problems> For this reason, the present invention provides a fuel pump connected to a battery with a transistor connected in series, and the voltage at both terminals of the fuel pump is adjusted via an A/D converter. The target drive voltage of the fuel pump is calculated from the input and required supply amount of fuel, and the target drive voltage is compared with the actual terminal voltage of the fuel pump detected from the voltage at both terminals of the fuel pump. The device is configured to include a microcomputer equipped with a function of outputting the transistor duty control signal so as to achieve the target drive voltage.
く作用〉
そして、かかる構成では、燃料ポンプの駆動量を燃料の
必要供給量等に基づいて連続的に制御し、実際の燃料ポ
ンプの端子電圧を燃料の必要供給量に応じて算出された
目標駆動電圧に限り無く近付けて燃料ポンプの回転数が
必要以上に高くなるのを防止する。In this configuration, the drive amount of the fuel pump is continuously controlled based on the required amount of fuel supplied, etc., and the actual terminal voltage of the fuel pump is adjusted to the target value calculated according to the required amount of fuel supplied. To prevent the rotational speed of a fuel pump from becoming higher than necessary by bringing it as close as possible to the driving voltage.
〈実施例）
以下、本発明の一実施例を第１図及び第２図に基づいて
説明する。<Example> An example of the present invention will be described below with reference to FIGS. 1 and 2.
第１図において、バッテリ （電圧ＶＳ）と接続される
燃料ポンプ６にはトランジスタ７が直列接続されている
。そして、この燃料ポンプ６の両端子から夫々導かれる
アナログ電圧が入力されて該アナログ電圧に対応するデ
ィジタル信号を出力するＡ／Ｄ変換器８が設けられ、該
ディジタル信号が入力されるマイクロコンピュータ９が
設けられている。In FIG. 1, a transistor 7 is connected in series to a fuel pump 6 connected to a battery (voltage VS). An A/D converter 8 is provided which inputs analog voltages led from both terminals of the fuel pump 6 and outputs a digital signal corresponding to the analog voltage, and a microcomputer 9 receives the digital signals. is provided.
このマイクロコンピュータ９は、入力されるディジタル
信号に基づいて燃料ポンプ６の実際の端子電圧Ｖｐ’（
Ｖ−Ｖｂ）を検出すると共に、燃料の必要供給量から燃
料ポンプ６の目標駆動電圧■、を算出し該目標駆動電圧
■アと実際の燃料ポンプの端子電圧ｖ 、 ｌ とを比
較して該端子電圧ｙ 、 ｌ が該目標駆動電圧■、と
なるよう前記トランジスタ７へ出力駆動回路１０を介し
てデユーティ制御信号を出力する機能を具備している。This microcomputer 9 calculates the actual terminal voltage Vp'(
V-Vb), and calculates the target drive voltage (2) of the fuel pump 6 from the required supply amount of fuel, and compares the target drive voltage (1) with the actual terminal voltage v, l of the fuel pump to calculate the target drive voltage (2). It has a function of outputting a duty control signal to the transistor 7 via the output drive circuit 10 so that the terminal voltages y and l become the target drive voltage .
燃料の必要供給量から燃料ポンプ６の目標駆動電圧Ｖ、
を算出するのは、図示しない機関回転速度センサからの
機関回転速度Ｎと、図示しない燃料噴射弁の駆動パルス
巾Ｔと、の値を演算して決定される（ＶＰ ＝ＴｘＮ／
に＋に’ 、但しに、に’は定数）。From the required supply amount of fuel, the target drive voltage V of the fuel pump 6,
is calculated by calculating the values of the engine rotation speed N from an engine rotation speed sensor (not shown) and the drive pulse width T of the fuel injection valve (not shown) (VP = TxN/
ni+ni', however, ni' is a constant).
かかる構成の作用を第２図のフローチャートに基づいて
説明する。The operation of this configuration will be explained based on the flowchart shown in FIG.
即ち、ステップ（以下Ｓと略称する）１において、前記
Ｖ、、Ｖ、のＡ／Ｄ変換を行い、Ｓ２に進む。このＳ２
においては、上記Ｖ、、Ｖ、に基づいて燃料ポンプ６の
実際の端子電圧■２゛（〜′８−■、）を検出する。Ｓ
３では、前記Ｖ、＝ＴＸＮ ／ Ｋ ＋ Ｋ ’ の演
算式によって演算される■、のマツプから燃料ポンプ６
の目標駆動電圧Ｖ、を読み取る。Ｓ４では、目標駆動電
圧■、と実際の燃料ポンプ６の端子電圧■２゛とを比較
し、Ｖ、＞ＶＰ゛であれば、Ｓ５に進んで出力デユーテ
ィを１分だけ上げる。ｖ、＜ｖ、’ であれば、Ｓ６に
進んで出力デユーティを１分だけ下げる。■２−■、”
であれば、出力デユーティを現状のままとする。Ｓ５及
びＳ６の後は、Ｓ７に進み、出力デユーティを設定する
。That is, in step (hereinafter abbreviated as S) 1, A/D conversion is performed on the V, , V, and the process proceeds to S2. This S2
In this step, the actual terminal voltage 2'(~'8-2) of the fuel pump 6 is detected based on the above V, , V. S
3, the fuel pump 6 is calculated from the map of
Read the target drive voltage V. In S4, the target drive voltage (2) is compared with the actual terminal voltage (2) of the fuel pump 6, and if V,>VP', the process proceeds to S5 and the output duty is increased by one minute. If v,<v,', the process proceeds to S6 and the output duty is lowered by one minute. ■2−■,”
If so, leave the output duty as it is. After S5 and S6, the process proceeds to S7 to set the output duty.
従って、トランジスタ７へのデユーティ信号で、トラン
ジスタ７がＯＮ・ＯＦＦされ、燃料の必要供給量に応じ
た平均駆動電圧で燃ネ４ポンプ６が駆動される。Therefore, the transistor 7 is turned on and off by a duty signal to the transistor 7, and the fuel 4 pump 6 is driven at an average driving voltage according to the required amount of fuel to be supplied.
かかる構成によれば、燃料ポンプ６の駆動量を燃料の必
要供給量等に基づいて連続的に制御することができ、制
御性の向上を図れると共に、燃料ポンプ６の実際の端子
電圧■、゛に基づいて燃料ポンプ６の駆動電圧■、をフ
ィードバック制御するようにしたから、燃料ポンプ６の
回転数を常に必要最小限度に抑えて騒音の抑制及び消費
電力の削減を図ることができる。又、燃料の必要供給量
から燃料ポンプ６の目標駆動電圧を算出し該目標駆動電
圧と燃料ポンプ６の両端子の電圧から検出される実際の
燃料ポンプ６の端子電圧とを比較して該端子電圧が該目
標駆動電圧となるよう前記トランジスタ７ヘデユーテイ
制１１１１信号を出力する機能をマイクロコンピュータ
９に具備させて、これらの機能をソフト化するようにし
たから、スイッチング回路等複雑な回路が不要で、素子
数が少なく、回路の小型化やコスト低減、制御精度の向
上等を図ることができる利点がある。According to this configuration, the drive amount of the fuel pump 6 can be continuously controlled based on the required supply amount of fuel, etc., and controllability can be improved, and the actual terminal voltages of the fuel pump 6 can be controlled. Since the driving voltage (1) of the fuel pump 6 is feedback-controlled based on the above, the rotational speed of the fuel pump 6 can always be kept to the minimum necessary level, thereby suppressing noise and reducing power consumption. Further, the target drive voltage of the fuel pump 6 is calculated from the required supply amount of fuel, and the target drive voltage is compared with the actual terminal voltage of the fuel pump 6 detected from the voltages at both terminals of the fuel pump 6. Since the microcomputer 9 is equipped with a function of outputting the duty control signal 1111 to the transistor 7 so that the voltage becomes the target drive voltage, and these functions are made into software, there is no need for complex circuits such as switching circuits. , the number of elements is small, and the advantage is that the circuit can be made smaller, the cost can be reduced, and the control accuracy can be improved.
〈発明の効果〉
以上説明したように、本発明によれば、燃料ポンプの駆
動量を燃料の必要供給量等に基づいて連続的に制御でき
、制御性を向上できると共に、実際の燃料ポンプの端子
電圧を燃ｌ”＃必要供給量に応じて算出された目標駆動
電圧に限り無く近付けて燃料ポンプの回転数が必要以上
に高くなるのを防止できる。又、制御機能をマイクロコ
ンピュータに具備させて、これらの機能をソフト化する
ようにしたから、スイッチング回路等複雑な回路が不要
で、素子数が少なく、回路の小型化やコスト低減、制御
精度の向上等を図ることができる利点がある。<Effects of the Invention> As explained above, according to the present invention, it is possible to continuously control the driving amount of the fuel pump based on the required supply amount of fuel, etc., and it is possible to improve controllability and improve the controllability of the actual fuel pump. By bringing the terminal voltage as close as possible to the target drive voltage calculated according to the required fuel supply amount, it is possible to prevent the fuel pump rotational speed from becoming higher than necessary.Also, the microcomputer is equipped with a control function. Since these functions are made into software, there is no need for complex circuits such as switching circuits, the number of elements is small, and there are advantages such as miniaturization of the circuit, cost reduction, and improvement of control accuracy. .
第１図は本発明に係わる内燃機関の燃料ポンプ制御装置
の一実施例を示す概略構成図、第２図は同上実施例の作
用を説明するフローチャート、第３図は従来の内燃機関
の燃料ポンプ制御装置の概略構成図である。
６・・・燃料ポンプ ７・・・トランジスタ ８・
・・Ａ／Ｄ変換器 ９・・・マイクロコンピュータ１
０・・・出力駆動回路
特許出願人 日本電子機器株式会社代 理 人
弁理士 笹 島 冨二雄第１図
第３図FIG. 1 is a schematic configuration diagram showing an embodiment of a fuel pump control device for an internal combustion engine according to the present invention, FIG. 2 is a flowchart explaining the operation of the same embodiment, and FIG. 3 is a conventional fuel pump for an internal combustion engine. FIG. 2 is a schematic configuration diagram of a control device. 6...Fuel pump 7...Transistor 8.
...A/D converter 9...Microcomputer 1
0...Output drive circuit patent applicant Japan Electronics Co., Ltd. Agent
Patent Attorney Fujio SasashimaFigure 1Figure 3
Claims (1)
接続して備え、前記燃料ポンプの両端子の電圧がＡ／Ｄ
変換器を介して入力され、燃料の必要供給量から燃料ポ
ンプの目標駆動電圧を算出し該目標駆動電圧と燃料ポン
プの両端子の電圧から検出される実際の燃料ポンプの端
子電圧とを比較して該端子電圧が該目標駆動電圧となる
よう前記トランジスタへデューテイ制御信号を出力する
機能を具備したマイクロコンピュータを備えて構成され
たことを特徴とする内燃機関の燃料ポンプ制御装置。A transistor is connected in series to a fuel pump connected to a battery, and the voltage at both terminals of the fuel pump is controlled by an A/D converter.
The target drive voltage of the fuel pump is calculated from the required amount of fuel inputted through the converter, and the target drive voltage is compared with the actual fuel pump terminal voltage detected from the voltage at both terminals of the fuel pump. 1. A fuel pump control device for an internal combustion engine, comprising: a microcomputer having a function of outputting a duty control signal to the transistor so that the terminal voltage becomes the target drive voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20966286A JPS6365166A (en) | 1986-09-08 | 1986-09-08 | Fuel pump controller for internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20966286A JPS6365166A (en) | 1986-09-08 | 1986-09-08 | Fuel pump controller for internal combustion engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6365166A true JPS6365166A (en) | 1988-03-23 |
Family
ID=16576523
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20966286A Pending JPS6365166A (en) | 1986-09-08 | 1986-09-08 | Fuel pump controller for internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6365166A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02146253A (en) * | 1988-11-25 | 1990-06-05 | Yamaha Motor Co Ltd | Fuel injection device of internal combustion engine |
| JPH07293399A (en) * | 1992-06-02 | 1995-11-07 | Walbro Corp | Fuel pressure regulator |
| JP2007315378A (en) * | 2006-04-26 | 2007-12-06 | Nikki Co Ltd | Fuel supply apparatus for engine |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57186030A (en) * | 1981-05-12 | 1982-11-16 | Japan Electronic Control Syst Co Ltd | Controller for electrical current for driving fuel pump |
-
1986
- 1986-09-08 JP JP20966286A patent/JPS6365166A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57186030A (en) * | 1981-05-12 | 1982-11-16 | Japan Electronic Control Syst Co Ltd | Controller for electrical current for driving fuel pump |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02146253A (en) * | 1988-11-25 | 1990-06-05 | Yamaha Motor Co Ltd | Fuel injection device of internal combustion engine |
| JPH07293399A (en) * | 1992-06-02 | 1995-11-07 | Walbro Corp | Fuel pressure regulator |
| JP2007315378A (en) * | 2006-04-26 | 2007-12-06 | Nikki Co Ltd | Fuel supply apparatus for engine |
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