JPS58158365A - Fuel supply control device for internal-combustion engine - Google Patents
Fuel supply control device for internal-combustion engineInfo
- Publication number
- JPS58158365A JPS58158365A JP4356082A JP4356082A JPS58158365A JP S58158365 A JPS58158365 A JP S58158365A JP 4356082 A JP4356082 A JP 4356082A JP 4356082 A JP4356082 A JP 4356082A JP S58158365 A JPS58158365 A JP S58158365A
- Authority
- JP
- Japan
- Prior art keywords
- fuel
- control device
- pump
- combustion engine
- internal combustion
- 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
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M51/00—Fuel-injection apparatus characterised by being operated electrically
- F02M51/02—Fuel-injection apparatus characterised by being operated electrically specially for low-pressure fuel-injection
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
Description
【発明の詳細な説明】 本発明は内燃機関の燃料制御装置に関するものである。[Detailed description of the invention] The present invention relates to a fuel control device for an internal combustion engine.
従来における内燃機関の燃料制御装置を第1図に示す。A conventional fuel control system for an internal combustion engine is shown in FIG.
図において、1は内燃機関、2は内燃機関IK−燃料を
噴射する燃料制御弁、3は内燃機関1への吸入空気量全
検出する空気量センサ、4は内燃機関1の冷却水の水温
を検出する水温センサ、5は空気量センサ3や水温セン
サ4からの信号に基いて内燃機関1が必要とする所要燃
料tを演算し、その結果に従って燃料制御弁2を開閉制
御する制御装置、6扛電動機6af有する燃料加圧用4
ンゾ、7は開閉器8t?介して電動機6aに接続された
バッテリs9は燃料タンク、10はポンプ6と燃料タン
ク9との間に設けられた配管、11は配管12′に介し
て4ンf6に接続された圧力調整器、13.14は圧力
調整器11と燃料タンク9および燃料制御弁2とt夫々
接続する配管である。In the figure, 1 is an internal combustion engine, 2 is a fuel control valve that injects internal combustion engine IK fuel, 3 is an air amount sensor that detects the total intake air amount to the internal combustion engine 1, and 4 is a temperature sensor for the cooling water of the internal combustion engine 1. A water temperature sensor 5 for detecting is a control device 6 that calculates the required fuel t required by the internal combustion engine 1 based on the signals from the air amount sensor 3 and the water temperature sensor 4, and controls the opening and closing of the fuel control valve 2 according to the result. 4 for fuel pressurization with electric motor 6af
Nzo, 7 is switch 8t? A battery s9 connected to the electric motor 6a via a fuel tank, 10 a pipe provided between the pump 6 and the fuel tank 9, 11 a pressure regulator connected to the 4-in f6 via a pipe 12', Pipes 13 and 14 connect the pressure regulator 11 to the fuel tank 9 and fuel control valve 2, respectively.
上記構成の従来装置において、内燃機関1の運転中は開
閉器8は制御装置5からの信号により閉じられ、電動機
6aUバツテリ7に接続されて回転する。これによって
、ポンゾロは駆動され%燃料タンク9内の燃料が配管1
0.12に介して圧力調整器11へ送られ、さらに燃料
は配管14を介して燃料制御弁2に供給される。圧力調
整器11は燃料制御弁2f−供給される燃下の圧力を一
定に保ち、燃料の余剰分は配管13を介して燃料タンク
9へ戻される。一方、制御装置5は空気量センサ3およ
び水温センサ4からの信号に基いて内燃機関1の必要燃
料量を演算し、この必要燃料量を噴射するよう燃料制御
92を開閉制御する。この結果、第2図に示すように内
燃機関1の吸入空気にと燃料制御弁2の燃料噴射貴重は
は比例する。In the conventional device having the above configuration, when the internal combustion engine 1 is operating, the switch 8 is closed by a signal from the control device 5, and is connected to the electric motor 6aU battery 7 to rotate. As a result, Ponzoro is driven and the fuel in the fuel tank 9 is transferred to the pipe 1.
0.12 to the pressure regulator 11, and the fuel is further supplied to the fuel control valve 2 via the pipe 14. The pressure regulator 11 keeps the pressure of the fuel supplied to the fuel control valve 2f constant, and excess fuel is returned to the fuel tank 9 via the pipe 13. On the other hand, the control device 5 calculates the required amount of fuel for the internal combustion engine 1 based on the signals from the air amount sensor 3 and the water temperature sensor 4, and controls the opening and closing of the fuel control 92 to inject this required amount of fuel. As a result, as shown in FIG. 2, the amount of fuel injected from the fuel control valve 2 is proportional to the intake air of the internal combustion engine 1.
制御装置5から燃料制御9P2への制御信号が7母ルス
幅変調信号の場合には燃料制御弁2を開閉するオンオフ
のデユーティ比が吸入空気量にはは比例する。When the control signal from the control device 5 to the fuel control 9P2 is a 7 pulse width modulation signal, the on/off duty ratio for opening and closing the fuel control valve 2 is proportional to the intake air amount.
しかるに、上記の従来装置においてポンプ6を駆動する
電動機6aは開閉器8を介してバッテリ7の全電圧全印
加され、ポンプ6は定容積形のため電動機6aは燃料制
御ff2の燃料噴射量とは無関係に常に全負荷運転され
、余剰燃料は圧力調整器11から配管13を通って燃料
タンク9に戻される。従って1通常直流分巻特性を有す
る電動機6aの消費電流は第3図(7)に示すように燃
料噴射量と無関係に一定となり、燃料消費量が少くなる
程電動機6a′gt含むポンプ6の効率が低下する。However, in the conventional device described above, the full voltage of the battery 7 is applied to the electric motor 6a that drives the pump 6 via the switch 8, and since the pump 6 is of a constant displacement type, the electric motor 6a is controlled by the fuel injection amount of the fuel control ff2. Regardless, it is always operated at full load, and surplus fuel is returned to the fuel tank 9 from the pressure regulator 11 through the pipe 13. Therefore, as shown in FIG. 3 (7), the current consumption of the electric motor 6a, which normally has DC shunt characteristics, remains constant regardless of the fuel injection amount, and the smaller the fuel consumption, the more efficient the pump 6, including the electric motor 6a'gt. decreases.
また、不要な燃料が圧力調整器11から燃料タンク9へ
帰還されるので燃料の@度も不要に上昇するという欠点
もあった。Furthermore, since unnecessary fuel is returned from the pressure regulator 11 to the fuel tank 9, there is also a drawback that the @ temperature of the fuel increases unnecessarily.
本発明は上記の点全考慮して成されたもので、加圧用の
電動式4ンゾの効率を向上することができる内燃機関の
燃料制御装置を提供することを目的とする。The present invention has been made in consideration of all the above points, and an object of the present invention is to provide a fuel control device for an internal combustion engine that can improve the efficiency of an electric pressurizing engine.
以下本発明の実施例會図面とともに説明する。 ・第
4図において、15は電動機6aとバッテリ7との間に
設けられたポンプ制御装置で、ポンプ制御装置15は制
#装置5から燃料制御弁2に印加される制御信号に対応
した制御信号を制御装置5から印加され、これによって
電動機6aの印加電圧全調整して電動機6aの回転数を
燃料制御弁2の燃料噴射量に比例するよう制御する。他
の構成は従来と同様である。電動機6aに対する印加電
圧の調整は、印加電圧を連続的に可変するかあるいはノ
4ルス幅制御で印加電圧の平均値を可変することにより
行われる。第5図はンルス幅制御の例を示し、第5図(
A)は制御装置5から燃料制御弁2に加えられる制御信
号で、第5図@は第5図囚の制御信号に対応してポンプ
制御装置15から電動機68に加えられる制御信号であ
る。TO線ノぐルス周期、Ta、Toはパルス幅、vB
祉印加電圧の大きさを示し、電動機6aK印加される平
均電圧は(Tb/To ) X VBとなり、直流分巻
特性を有する電動機2aの回転数はこの平均電圧にはは
比例する。Embodiments of the present invention will be described below with reference to drawings. - In FIG. 4, 15 is a pump control device provided between the electric motor 6a and the battery 7, and the pump control device 15 receives a control signal corresponding to the control signal applied from the control device 5 to the fuel control valve 2. is applied from the control device 5, and thereby the applied voltage to the electric motor 6a is fully adjusted to control the rotational speed of the electric motor 6a to be proportional to the fuel injection amount of the fuel control valve 2. The other configurations are the same as before. The voltage applied to the motor 6a is adjusted by continuously varying the applied voltage or by varying the average value of the applied voltage using pulse width control. Figure 5 shows an example of pulse width control, and Figure 5 (
A) is a control signal applied from the control device 5 to the fuel control valve 2, and FIG. 5 @ is a control signal applied from the pump control device 15 to the electric motor 68 in response to the control signal shown in FIG. TO line noggle period, Ta and To are pulse widths, vB
The average voltage applied to the electric motor 6aK is (Tb/To) x VB, and the rotational speed of the electric motor 2a having DC shunt characteristics is proportional to this average voltage.
又、Taは燃料制御弁2の開弁時間を表わすが、−はT
aと同一時間幅とするかあるいは電動機6aの特性から
生ずる印加電圧に対する不感帯や燃料噴射量の過渡的な
増量補正などを考慮してTaVcはぼ比例した独自の値
としても良い。このように電動機6af制御することに
よって燃料噴射蓋に灼する電動機6aの消費型&は第3
図(イ)に示すようにほぼ比例したものとなり、電動機
63は所要の燃料量を加圧するのに必要十分な印加電圧
が与えられるとともにあらゆる燃料噴射itに対して効
率の良い運転が可能となる。又、圧力調整器11から燃
料タンク9への帰1に燃料に’に減少させることができ
、燃料の温度上昇を抑制することができる。Also, Ta represents the opening time of the fuel control valve 2, and - represents T.
TaVc may be set to have the same time width as a, or may be set to a unique value approximately proportional to TaVc in consideration of a dead zone with respect to the applied voltage resulting from the characteristics of the electric motor 6a, transient increase correction of the fuel injection amount, etc. By controlling the electric motor 6af in this way, the consumption type & of the electric motor 6a that burns the fuel injection lid is the third
As shown in Figure (a), the voltage is almost proportional, and the electric motor 63 is given sufficient applied voltage to pressurize the required amount of fuel, and is capable of efficient operation for all types of fuel injection. . In addition, the return of fuel from the pressure regulator 11 to the fuel tank 9 can be reduced to '', and a rise in fuel temperature can be suppressed.
又、ポンプ制御装置15には第6図rこ示すような特性
を持たせることができる。即ち、バッテリ7の電圧vB
は変動特に低下することがあり、この場合には4ンプ制
御装置15から電動機6aへの制御信号のデユーティ比
(”/To) k VBの低下Vこ椋って大きくなるよ
うにし、これによって電動機6aに印加される電圧(”
/’r、 )x VBがバッテリ電圧Vnの変動の影響
を受けないように補償し、バッテリ電圧の変動によって
電動機6aの回転数が変動しボンデ6の吐出量が変動す
るのを防止する。Further, the pump control device 15 can be provided with characteristics as shown in FIG. That is, the voltage vB of the battery 7
In this case, the duty ratio (''/To) of the control signal from the 4-pump controller 15 to the motor 6a is increased. The voltage applied to 6a (”
/'r, )x VB is compensated so that it is not affected by fluctuations in the battery voltage Vn, and the discharge amount of the bonder 6 is prevented from fluctuating due to fluctuations in the battery voltage due to fluctuations in the rotational speed of the motor 6a.
尚、燃料制御yf−2の制御も間欠噴射と連続噴射のい
ずれでも良く、又燃料制御弁2の設置場所は内燃機関1
の吸気系統のいずれに設けても良い。The fuel control valve yf-2 may be controlled by either intermittent injection or continuous injection, and the fuel control valve 2 is installed at the internal combustion engine 1.
It may be provided in any of the intake systems.
さらに%窒気量センサ4の代シに吸気管負圧センサを用
いても良く、又内燃機関1の回転数を検出する回転数上
ンサを用いても良い。Further, an intake pipe negative pressure sensor may be used in place of the % nitrogen amount sensor 4, or a rotational speed sensor for detecting the rotational speed of the internal combustion engine 1 may be used.
以上のように本発明に係る内燃機関の燃料制御装置にお
いて祉、電動式ポンプとその駆動電源との間に、燃料噴
射量全制御する匍j御装置からの信号に応じて電動式ポ
ンプをその回転数が燃料制御弁の燃料噴射量に比例する
よう制御する4ング制御装置を設けており、これによっ
て所要の燃料噴射量の大小に応じて電動式ボンデの回転
数を増減することができ、電動式ポンプはエネルギー會
浪費することなく常に効率の良い運転が可能となる。As described above, in the fuel control device for an internal combustion engine according to the present invention, the electric pump is connected between the electric pump and its drive power source in response to a signal from the control device that controls the total amount of fuel injection. A four-ring control device is installed to control the rotation speed so that it is proportional to the fuel injection amount of the fuel control valve, and this allows the rotation speed of the electric bonder to be increased or decreased depending on the magnitude of the required fuel injection amount. Electric pumps can always operate efficiently without wasting energy.
第1図は従来装置の概略構成図、第2.3図は従来およ
び本発明に係る装置の特性図、第4図は本発明装置の概
略構成図、第5図囚、@は夫々本発明に係る装置におけ
る燃料制御弁および電動式ボンデへの制御信号波形図、
第6図は本発明に係る装置の特性図。
1・−・内燃機関、2・・・燃料制御弁53・・・空気
lセンサ%4−水温センサ、5・・・制御装置%6・・
・電動式ボンデs 6 a・・・電動機、7・・・/?
ツテリ、9・・・燃料タンク、15・・・ポンプ制御装
置。
なお、図中同一符号は同一または相当部分ケ示す。
代理人 葛 軒 信 −
1l1図
第2図
tlIJs図
第4図
第5図
第6図Fig. 1 is a schematic configuration diagram of a conventional device, Figs. 2.3 are characteristic diagrams of the conventional device and the device according to the present invention, Fig. 4 is a schematic configuration diagram of the device of the present invention, and Fig. 5 is a schematic diagram of the device according to the present invention. Control signal waveform diagram for the fuel control valve and electric bonder in the device related to
FIG. 6 is a characteristic diagram of the device according to the present invention. 1... Internal combustion engine, 2... Fuel control valve 53... Air l sensor %4-Water temperature sensor, 5... Control device %6...
・Electric Bonde s 6 a...Electric motor, 7.../?
9...Fuel tank, 15...Pump control device. Note that the same reference numerals in the figures indicate the same or corresponding parts. Agent Shin Kuzuken - 1l1 Figure 2 tlIJs Figure 4 Figure 5 Figure 6
Claims (3)
一射する燃料制御弁と、内燃機関の作動状態を検出する
センサからの信号に応じて燃料制御弁を必要燃料量を噴
射するよう開閉制御する制御装置と、*動式ポンプとそ
の駆動〜電源との間に設けられ、制御装置からの制御信
号に応じて電動式ポンプをその回転数が燃料制御弁の燃
料噴射量に比例するよう側割するポンプ制御装置と?備
えたことを特徴とする内燃機関の燃料制御装置。(1) A fuel control valve that injects pressurized fuel into the internal combustion engine by an electric two-wheel engine, and a fuel control valve that injects the required amount of fuel in response to a signal from a sensor that detects the operating state of the internal combustion engine. A control device that controls the opening and closing of the electric pump, and a control device that controls opening and closing of the electric pump according to a control signal from the control device, and a control device that controls the opening and closing of the electric pump and a power supply for driving the electric pump. A pump control device that splits the sides proportionally? A fuel control device for an internal combustion engine, characterized by comprising:
を補償する出力音発生するよう構成したこと全特徴とす
る特許請求の範囲第1項記載の内燃機関の燃料制御装置
。(2) The fuel control device for an internal combustion engine according to claim 1, wherein the pump control device is configured to generate an output sound that compensates for voltage fluctuations of the drive power source.
に応じてデユーティ比を高めるようにしたノ母ルス幅変
調信号を出力するようにしたことを特徴とする特許請求
の範囲第2項記載の内燃機関の燃料制御装置。(3) The pump control device is configured to output a pulse width modulation signal whose duty ratio is increased in accordance with a voltage drop of the drive power source. Fuel control device for internal combustion engines.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4356082A JPS58158365A (en) | 1982-03-15 | 1982-03-15 | Fuel supply control device for internal-combustion engine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4356082A JPS58158365A (en) | 1982-03-15 | 1982-03-15 | Fuel supply control device for internal-combustion engine |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS58158365A true JPS58158365A (en) | 1983-09-20 |
Family
ID=12667127
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4356082A Pending JPS58158365A (en) | 1982-03-15 | 1982-03-15 | Fuel supply control device for internal-combustion engine |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS58158365A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4791905A (en) * | 1985-04-02 | 1988-12-20 | Nippondenso Co., Ltd. | Control apparatus for a vehicle engine electric fuel pump |
JPH02181068A (en) * | 1988-11-28 | 1990-07-13 | Walbro Corp | Fuel feeder for internal combustion engine |
JP2021080864A (en) * | 2019-11-18 | 2021-05-27 | マーレエレクトリックドライブズジャパン株式会社 | Drive control device of fuel pump and fuel supply device |
-
1982
- 1982-03-15 JP JP4356082A patent/JPS58158365A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4791905A (en) * | 1985-04-02 | 1988-12-20 | Nippondenso Co., Ltd. | Control apparatus for a vehicle engine electric fuel pump |
JPH02181068A (en) * | 1988-11-28 | 1990-07-13 | Walbro Corp | Fuel feeder for internal combustion engine |
JP2021080864A (en) * | 2019-11-18 | 2021-05-27 | マーレエレクトリックドライブズジャパン株式会社 | Drive control device of fuel pump and fuel supply device |
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