JPS59150971A - Fuel pump control device for engine - Google Patents
Fuel pump control device for engineInfo
- Publication number
- JPS59150971A JPS59150971A JP2569683A JP2569683A JPS59150971A JP S59150971 A JPS59150971 A JP S59150971A JP 2569683 A JP2569683 A JP 2569683A JP 2569683 A JP2569683 A JP 2569683A JP S59150971 A JPS59150971 A JP S59150971A
- Authority
- JP
- Japan
- Prior art keywords
- fuel
- temperature
- engine
- injection valve
- pump
- 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
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
- F02M37/04—Feeding by means of driven pumps
- F02M37/08—Feeding by means of driven pumps electrically driven
-
- 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
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
- F02M37/04—Feeding by means of driven pumps
- F02M37/08—Feeding by means of driven pumps electrically driven
- F02M2037/085—Electric circuits therefor
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of The Air-Fuel Ratio Of Carburetors (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は、エンジンの燃料ポンプ制御装置番こ関す；る
ものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a fuel pump control system for an engine.
、般に、エンジンの燃料系Ｇこお０て（ま、エンジンに
燃料を供給する気化器あるし１１ま燃枦ト１噴射弁番こ
対し、燃料タンクから燃料を送給する燃料ポンプが設け
られている。そして、通常上記燃料ポンプはエンジンの
高負荷時における最大燃料消費量より多い吐出量が得ら
れるように駆動しており、上記のように多量の燃料吐出
量を得るための燃料ポンプの駆動はエンジンの低負荷時
等の比較的燃料消費量の少ない領域では無駄な電気負荷
となって、燃費性能の低下を招≦などの弊害を有するも
のである。In general, an engine's fuel system is equipped with a carburetor that supplies fuel to the engine, and a fuel pump that supplies fuel from a fuel tank. The above fuel pump is normally driven to obtain a discharge amount that is higher than the maximum fuel consumption when the engine is under high load. In regions where fuel consumption is relatively low, such as when the engine is under low load, this drive becomes a wasteful electrical load, leading to a decrease in fuel efficiency and other disadvantages.
これに対し、例えば特開昭グアー２７７．２θ号公報に
示されるように、燃料ポンプの作動をエンジンの燃ｔ１
消費量に応じて制御し、燃料ポンプの送給量を必要最少
限として電気負荷を軽減するようにした技術が提案され
ている。On the other hand, as shown in Japanese Patent Application Laid-Open No. 277.2θ, for example, the operation of the fuel pump is controlled by the engine fuel t1.
Techniques have been proposed that reduce the electrical load by controlling the fuel consumption according to the fuel consumption and reducing the amount of fuel pumped to the necessary minimum level.
しかして、燃料ポンプをエンジンの燃料消費量すなわち
エンジン負荷に応じて制御することによって燃料ポンプ
の電気負荷を軽減した場合に、気化器あるいは燃料噴射
弁からリターン通路を介して燃料タンクに回収される余
剰送給燃料の流量が少なくなることにより、この燃料に
よる気化器あるいは燃料噴射弁の冷却効果が低下し、エ
ンジン温度の上昇等によって気化器あるいは燃料噴射弁
の温度が異常に高（なり、この気化器あるいは燃料噴射
弁内の燃料に気泡が発生し、所定の燃料供給が行えない
現象が発生する恐れがある。Therefore, when the electrical load on the fuel pump is reduced by controlling the fuel pump according to the engine's fuel consumption, that is, the engine load, the fuel is recovered from the carburetor or fuel injection valve to the fuel tank via the return passage. As the flow rate of surplus fuel is reduced, the cooling effect of this fuel on the carburetor or fuel injection valve is reduced, and the temperature of the carburetor or fuel injection valve becomes abnormally high due to an increase in engine temperature, etc. Bubbles may be generated in the fuel in the carburetor or fuel injection valve, and a phenomenon may occur in which a predetermined amount of fuel cannot be supplied.
そこで本発明は、エンジンの負荷状態に応じて燃ｔ１ポ
ンプの吐出量を制御する一方、気化器あるいは燃料噴射
弁が高温状態にあるときには、リターン通路を流れる燃
料量が増大するように燃料ポンプの吐出量を補正制御し
て異常昇温による気泡発生に対匙せんとするものそある
。Therefore, the present invention controls the discharge amount of the fuel t1 pump according to the load condition of the engine, while controlling the fuel pump so that the amount of fuel flowing through the return passage increases when the carburetor or fuel injection valve is in a high temperature state. There are some methods that compensate for the generation of bubbles due to abnormal temperature rise by correcting and controlling the discharge amount.
上記目的を達成する本発明の構成は、燃料タンクから気
化器あるいは燃料噴射弁へ燃料を送給するための電気式
燃料ポンプと、余剰送給燃料を燃料タンクに戻すリター
ン通路と、気化器あるいは燃料噴射弁内温度を検出する
温度検出手段と、エンジンの負荷状態に応じて上記燃料
ポンプの吐出量を制御する一方、上記温度検出手段の信
号を受は検出温度が設定値以上の高温時にリターン通路
を流れる燃料の流量が増大するように燃料ポンプの吐出
量を補正制御する制御回路とを備えたものである。The structure of the present invention that achieves the above object includes: an electric fuel pump for feeding fuel from a fuel tank to a carburetor or a fuel injection valve; a return passage for returning surplus fuel to the fuel tank; Temperature detection means detects the temperature inside the fuel injection valve and controls the discharge amount of the fuel pump according to the engine load condition, while receiving the signal from the temperature detection means returns when the detected temperature is higher than a set value. The fuel pump includes a control circuit that corrects and controls the discharge amount of the fuel pump so that the flow rate of fuel flowing through the passage increases.
以下、不発８１１の具体的構成を図面に沿って説明する
。第１図において、１は吸気通路２および排気通路６を
備えたエンジン、４は上記吸気通路２に配設されエンジ
ン１に燃料を供給する燃料噴射弁、５は燃料噴射弁４と
燃料タンク６とを接続する燃料供給制御を示し、燃料供
給通路５には、燃料タンク６から燃料噴射弁４に燃料を
送給する吐出量が可変な電気式燃料ポンプ７が介装され
ている。The specific configuration of the misfire 811 will be described below with reference to the drawings. In FIG. 1, 1 is an engine equipped with an intake passage 2 and an exhaust passage 6, 4 is a fuel injection valve disposed in the intake passage 2 and supplies fuel to the engine 1, and 5 is a fuel injection valve 4 and a fuel tank 6. The fuel supply passage 5 is provided with an electric fuel pump 7 whose discharge amount is variable and which supplies fuel from the fuel tank 6 to the fuel injection valve 4.
上記燃料供給通路５の燃料ポンプ７のｎｆｌ後にはそれ
ぞれフィルタ８，９が配設され、燃料ポンプ７および燃
料噴射弁４の異物による故障等の発生を防止している。Filters 8 and 9 are disposed in the fuel supply passage 5 after nfl of the fuel pump 7, respectively, to prevent the fuel pump 7 and the fuel injection valve 4 from malfunctioning due to foreign matter.
また、１０は、上記燃料噴射弁４より上流側の燃料供給
油ＦｐＩ５から分岐し、圧力レギュレータ１１を介して
燃料タンク６に接続されたリターン通路を示し、上記圧
力レギュレータ１１には燃料噴射弁４近傍の吸気通路２
０吸気負圧が導入され、この吸気負圧と燃料供給油！＠
５の燃料圧力との差が一定となるようにリターン通路１
０を通る燃料量を調整するように構成されている。Reference numeral 10 indicates a return passage branched from the fuel supply oil FpI5 upstream of the fuel injection valve 4 and connected to the fuel tank 6 via the pressure regulator 11. Nearby intake passage 2
0 intake negative pressure is introduced, this intake negative pressure and fuel supply oil! @
Return passage 1 so that the difference between the fuel pressure of
It is configured to adjust the amount of fuel passing through zero.
上記燃料噴射弁４には、該燃料噴射弁４の温度を検出す
る温度検出手段１２が配設されている。The fuel injection valve 4 is provided with temperature detection means 12 for detecting the temperature of the fuel injection valve 4.
一方、前記エンジン１の吸気通Ｖ？！１２には、エアク
リーナ１３の下流側にエンジン１の負荷状態に対応する
吸入空気量を検出するエアフローメータ１４が介装され
、このエアフローメータ１４の下流側で燃料噴射弁４の
上流側の吸気通路２にスロットル弁１５が介装されてい
る。On the other hand, the intake vent V of the engine 1? ! 12, an air flow meter 14 for detecting the amount of intake air corresponding to the load condition of the engine 1 is installed downstream of the air cleaner 13. A throttle valve 15 is interposed at 2.
また、１６は上記燃料ポンプ７の吐出量制御および燃料
噴射弁４によるエンジン１への燃料供給制御を行う制御
回路であり、仁の制御回ＷＪ１６には、前゛記エアフロ
ーメータ１４か二のエンジン１の負荷状態に対応する吸
入空気量信号および温度検出手段１２からの温度信号が
入力されるとともに、点火信号からエンジン回転数を検
出する回転センサー１７の信号が入力される。Further, 16 is a control circuit that controls the discharge amount of the fuel pump 7 and the fuel supply to the engine 1 by the fuel injection valve 4. An intake air amount signal and a temperature signal from the temperature detecting means 12 corresponding to the load condition No. 1 are inputted, as well as a signal from a rotation sensor 17 that detects the engine rotation speed from an ignition signal.
上記制御回路１６は、エア７０−メータ１４からの吸入
空気量に対応するエンジン１の負荷状態に応じて上記燃
料ポンプ７の吐出量をエンジン消費量より所定量多い送
給量に基本的に制御する一方、温度検出手段１２で検出
した燃料噴射弁４の温度が設定値以上の高温時にリター
ン通路１ｏを流れる燃料の流量が増大するように燃料ポ
ンプ７の吐出量を補正制御するべく燃料ポンプ７に制御
信号を出力する。さらに１回転センサー１７とエフ７０
−メ−１１４とにより検出したエンジン回転数と吸入空
気量に応じてエンジン１に供給する燃料量に対応する噴
射回数、噴射量を求めて、燃ｔ（噴射弁４に制御信号を
出力するものである。The control circuit 16 basically controls the discharge amount of the fuel pump 7 to a supply amount that is a predetermined amount larger than the engine consumption amount according to the load condition of the engine 1 corresponding to the intake air amount from the air 70-meter 14. On the other hand, the fuel pump 7 corrects and controls the discharge amount of the fuel pump 7 so that the flow rate of fuel flowing through the return passage 1o increases when the temperature of the fuel injection valve 4 detected by the temperature detection means 12 is higher than the set value. Outputs a control signal to. Furthermore, 1 rotation sensor 17 and F70
- Calculate the number of injections and injection amount corresponding to the amount of fuel supplied to the engine 1 according to the engine speed and intake air amount detected by the engine 114, and output a control signal to the fuel t (injector 4). It is.
なお、第１図において、１８は吸気弁、１９は排気弁、
２０は点火プラグを示す。In addition, in FIG. 1, 18 is an intake valve, 19 is an exhaust valve,
20 indicates a spark plug.
第２図には、上記制御回路１６の一例を示し、回転セン
サー１７からの点火信号は回転数検出回路２３に入力さ
れてエンジン回転数が検出され、この回転数信号は燃料
噴射パルス発生回路２４に出力される。一方、エアフロ
ーメータ１４の吸入空気量信号は上記燃料噴射パルス発
生回路２４に入力され、この燃料噴射パルス発生回路２
４は両信号より求めたエンジンの運転状態に対応する所
定の燃料噴射時期（回数）と噴射量で燃料噴射を行うべ
く所定のタイミングおよびパルス幅を有する噴射パルス
を発生して燃料噴射弁駆動回路２５に出力し、燃料噴射
弁駆動口ＩＭ２５から燃料噴射弁４に制御信号が出力さ
れる。FIG. 2 shows an example of the control circuit 16, in which the ignition signal from the rotation sensor 17 is input to the rotation speed detection circuit 23 to detect the engine rotation speed, and this rotation speed signal is sent to the fuel injection pulse generation circuit 24. is output to. On the other hand, the intake air amount signal of the air flow meter 14 is input to the fuel injection pulse generation circuit 24, and this fuel injection pulse generation circuit 2
4 is a fuel injection valve drive circuit that generates an injection pulse having a predetermined timing and pulse width to inject fuel at a predetermined fuel injection timing (number of times) and injection amount corresponding to the operating state of the engine determined from both signals. 25, and a control signal is output from the fuel injection valve drive port IM25 to the fuel injection valve 4.
また、上記エアフローメータ１４の信号は、基本駆動信
号設定回路２６にも入力され、この基本駆動信号設定回
路２６ではエアフローメータ１４からの吸入空−気量に
対応するエンジンの負荷状態に応じ、燃料噴射弁４から
の燃料噴射量（第９図の鎖線参照）に所定量Ａだけ増量
した燃料流量に相当する吐出量（勇グ図の実線参照）を
得るための基本駆動信号を出力する。この４８号は、補
正回路２７を介して燃料ポンプ駆動回路２８に出力され
、この燃料ポンプ駆動回ＷＩ２Ｂから燃料ポンプ７に制
御信号が出力される。The signal from the air flow meter 14 is also input to the basic drive signal setting circuit 26, and the basic drive signal setting circuit 26 determines whether the fuel is in A basic drive signal is output to obtain a discharge amount (see the solid line in the diagram) corresponding to a fuel flow rate that is increased by a predetermined amount A to the fuel injection amount from the injection valve 4 (see the chain line in FIG. 9). This No. 48 is outputted to the fuel pump drive circuit 28 via the correction circuit 27, and a control signal is outputted to the fuel pump 7 from this fuel pump drive circuit WI2B.
上記補正回路２７には温度検出手段１２の信号が入力さ
れ、燃料噴射弁４の温度が設定値以上の高温時に基本駆
動信号設定回路２６からの基本吐出量に相当する基本駆
動信号に補正信号を加算した＠号を燃料ポンプ駆動回路
２８に出力し燃料ポンプ７の吐出量を増大するものであ
る。The signal from the temperature detection means 12 is input to the correction circuit 27, and when the temperature of the fuel injection valve 4 is higher than the set value, a correction signal is sent to the basic drive signal corresponding to the basic discharge amount from the basic drive signal setting circuit 26. The added @ symbol is output to the fuel pump drive circuit 28 to increase the discharge amount of the fuel pump 7.
第３図には上記補正回路２７をさらに具体的番こ示し、
温度検出手段１２の温度センサーからの信号が補正回路
２７の比較器２９に入力され、この比較器２９で設定温
度に相当する設定電圧Ｅｏと比較され、検出温度が設定
値以上のときに比較器２９から正信号が出力され、基本
駆動信号設定回路２６か−らの基本駆動電流に比較器２
９の出力信号が抵抗ｋ、タイオードＤを介して加算され
５基本駆動信号を一定値増大して燃料ポンプ駆動回路２
８に出力するものである。FIG. 3 shows a more specific number of the correction circuit 27,
A signal from the temperature sensor of the temperature detection means 12 is input to the comparator 29 of the correction circuit 27, and is compared with a set voltage Eo corresponding to the set temperature by the comparator 29. When the detected temperature is higher than the set value, the comparator A positive signal is output from 29, and the comparator 2 is connected to the basic drive current from the basic drive signal setting circuit 26.
The output signal of 9 is added via the resistor k and the diode D, and the basic drive signal of 5 is increased by a certain value to be sent to the fuel pump drive circuit 2.
8.
上記ＩＪ ＩＩ回ｆｉ＠１６＋こより、第９図に示すよ
うに、エアフローメータ１４の出力信号に対し、燃料噴
射弁４からエンジン１に供給する燃料流量は、鎖線で示
すような特性で行われる一方、定常時における燃料ポン
プ７の吐出量は実線で示すように、上記エンジン供給量
より一定値Ａだけ大きい流量となるように制御され、ま
た、高温時における燃料ポンプ７の吐出量は破線で示す
ようにさらに大きな流量となるように制御するものであ
る。From the above IJ II times fi@16+, as shown in FIG. 9, the fuel flow rate supplied from the fuel injection valve 4 to the engine 1 is determined according to the characteristics shown by the chain line in response to the output signal of the air flow meter 14. The discharge amount of the fuel pump 7 during steady state is controlled to be a flow rate larger than the engine supply amount by a fixed value A, as shown by the solid line, and the discharge amount of the fuel pump 7 at high temperatures is shown by the broken line. The flow rate is controlled so that the flow rate becomes even larger.
上記実施例によれば、定常運転時にはエンジン１の負荷
状態に対応して燃料噴射弁４からエンジン１に供給する
燃料供給量より所定量多い基本吐出量で燃料ポンプ７を
制御し、燃料ポンプ７の吐出量を必要最少限として無駄
な駆動を減少し、燃料ポンプ７の電気負荷を軽減して燃
費性能の向上を図る一方、燃料噴射弁４の温度が設定値
以上の高温時には、金利燃料を燃料タンク６に戻すリタ
ーン通ｌｉｔ！１０を流れる燃料の流量が増大するよう
に燃料ポンプ７の吐出量を補正制御することにより、上
記高温時においてはリターン燃料の増大による燃料噴射
弁４の冷却効果を向上し、燃料噴射弁４内で燃料に気泡
が発生するのを防止する。According to the above embodiment, during steady operation, the fuel pump 7 is controlled with a basic discharge amount that is a predetermined amount higher than the fuel supply amount supplied to the engine 1 from the fuel injection valve 4 in accordance with the load state of the engine 1, and the fuel pump 7 is This reduces wasteful driving by reducing the discharge amount to the minimum necessary and reduces the electrical load on the fuel pump 7 to improve fuel efficiency.When the temperature of the fuel injection valve 4 is higher than the set value, the fuel is Return port to return to fuel tank 6 lit! By correcting and controlling the discharge amount of the fuel pump 7 so as to increase the flow rate of fuel flowing through the fuel injection valve 10, the cooling effect of the fuel injection valve 4 due to the increase in return fuel is improved at the above-mentioned high temperature, and the inside of the fuel injection valve 4 is improved. to prevent bubbles from forming in the fuel.
第５図は上記燃料噴射弁４に代えて気化器を使用してエ
ンジン１に燃料を供給するようにした場合における制御
回路６００例を示し、この制御回路６０は燃ｔ１ポンプ
７の制御のみを行うものてあって、基本駆動信号設定回
路２６にはエアフローメータ１４の信号に代えて、スロ
ットル弁１５の開度から負荷状態を検出するスロットル
開度センサー３１の信号が入力され、この信号に応じて
燃料ポンプ７の基本吐出量に相当する基本駆動信号を補
正回路２７に出力する。この補正回路２７には気化器の
温度を検出する温度検出手段１２の信号が入力され、気
化器の温度が設定置以上の高温時に基本駆動信号に補正
信号を加算して燃料ポンプ駆動回路２８に信号を出力し
、この燃料ポンプ駆動回路２８から燃料ポンプ７に制御
信号を出力−するものである。FIG. 5 shows an example of a control circuit 600 in a case where a carburetor is used in place of the fuel injection valve 4 to supply fuel to the engine 1, and this control circuit 60 only controls the fuel t1 pump 7. Instead of the signal from the air flow meter 14, the signal from the throttle opening sensor 31, which detects the load condition from the opening of the throttle valve 15, is input to the basic drive signal setting circuit 26. A basic drive signal corresponding to the basic discharge amount of the fuel pump 7 is output to the correction circuit 27. A signal from the temperature detection means 12 that detects the temperature of the carburetor is input to this correction circuit 27, and when the temperature of the carburetor is higher than the set point, a correction signal is added to the basic drive signal and the signal is sent to the fuel pump drive circuit 28. The fuel pump drive circuit 28 outputs a control signal to the fuel pump 7.
本発明は上記実施例の構造に限定されることな（種々の
変形例を包含している。すな゛わち、エンジン１の負荷
検出としては、上記エアフローメータ１４による他、ス
ロットル開度、吸気負圧、排気圧力等のエンジンの負荷
状態と相関関係のある信号が適宜組合せ咬用可能である
。また、温度検出手段１２としては、上記燃料噴射弁４
あるいは気化器の温度を検出するもののほか、燃刺噴射
弁４あるいは気化器近傍の雰囲気温度、もしくは燃料供
給通路５あるいはリターン通路１０の燃料温度を検出す
るようにしてもよい。さらに、高温時の燃料ポンプ７の
吐出量の増大量は、上記実施例のように一定値とするか
もしくは温度に応じて可変としてもよい。一方、制御口
ＩＭ１６ 、３０としては、上記アナログ方式によるも
ののほか、コンピュータを使用したデジタル方式による
ものが適宜採用可能である。The present invention is not limited to the structure of the above embodiment (it includes various modifications).In other words, the load of the engine 1 can be detected by the air flow meter 14, as well as by the throttle opening, Signals that have a correlation with the load state of the engine such as intake negative pressure and exhaust pressure can be used in combination as appropriate.
Alternatively, in addition to detecting the temperature of the carburetor, the temperature of the atmosphere near the fuel injection valve 4 or the carburetor, or the temperature of the fuel in the fuel supply passage 5 or return passage 10 may be detected. Further, the amount of increase in the discharge amount of the fuel pump 7 at high temperatures may be a constant value as in the above embodiment, or may be variable depending on the temperature. On the other hand, as the control ports IM16 and IM 30, in addition to the above-mentioned analog system, a digital system using a computer can be adopted as appropriate.
以」二説明したように、本発明によれは、燃料タンクか
ら気化器あるいは燃料噴射弁へ燃ｆ１を送給するための
電気式燃料ポンプの吐出量を基本的にはエンジンの負荷
状態に応じて制御し、エンジンの燃料消費量に対し必要
最少限の吐出量で燃料ポンプを駆動することにより、燃
料ポンプの電気負荷を軽減して燃費性能の向上を図るこ
とができる。As explained above, according to the present invention, the discharge amount of the electric fuel pump for delivering fuel f1 from the fuel tank to the carburetor or the fuel injection valve is basically adjusted according to the load condition of the engine. By controlling the fuel pump and driving the fuel pump with the minimum necessary discharge amount for the fuel consumption of the engine, it is possible to reduce the electrical load on the fuel pump and improve fuel efficiency.
また、気化器あるいは燃料噴射弁の温度が設定値以上の
高温時には、余剰送給燃料を燃料タンクニアＪすりター
ン通路を流れるリターン燃料を増大するように燃料ポン
プの作動を補正制御することにより、このリターン燃料
による気化器あるいは燃料噴射弁の冷却効果を向上し、
燃料中に気泡が発生するのを防止して良好な運転性能を
確保することができる効果を有する。In addition, when the temperature of the carburetor or fuel injection valve is higher than the set value, the operation of the fuel pump is corrected and controlled so that the excess delivered fuel is used to increase the return fuel flowing through the fuel tank near J slip-turn passage. Improves the cooling effect of the carburetor or fuel injection valve by return fuel,
This has the effect of preventing bubbles from forming in the fuel and ensuring good driving performance.
図面は本発明の実施態様を例示し、第１図は概略構成図
、第２図は制御回路を示すブロック図、第３図は補正回
路の具体例を示す電気回路図、第７図は燃料ポンプおよ
び燃料噴射弁にょる燃料流量特性を示すグラフ、ｆ、５
図は制御回路の変形例を示すブロック図である。
１・・・・エンジン、２・・・・・・吸気通路、４・・
・・・燃料噴射弁、５・・・・・・燃料供給通路、６・
・・・・・燃料タンク。
７・・・・・・燃料ポンプ、１０・・・・・・リターン
通路、１１・・・・圧力レギュレータ、１２・・・・・
・温度検出手段、１４・・・・・エアフローメータ、１
６．３０・・・・・・制御回路、１７・・・・・・回転
センサーThe drawings illustrate embodiments of the present invention; FIG. 1 is a schematic configuration diagram, FIG. 2 is a block diagram showing a control circuit, FIG. 3 is an electric circuit diagram showing a specific example of a correction circuit, and FIG. 7 is a fuel Graph showing fuel flow characteristics by pump and fuel injection valve, f, 5
The figure is a block diagram showing a modification of the control circuit. 1...Engine, 2...Intake passage, 4...
... Fuel injection valve, 5 ... Fuel supply passage, 6.
...Fuel tank. 7...Fuel pump, 10...Return passage, 11...Pressure regulator, 12...
・Temperature detection means, 14...Air flow meter, 1
6.30... Control circuit, 17... Rotation sensor
Claims (1)
１１寅−弁へ燃料を送給するための電気式燃料ポンプと
、余剰送給燃料を燃料タン月こ戻すリターン１ｍ路と、
気化器あるいは燃料噴射弁の温度を１＊出する温度検出
手段と、エンジンＯ）負荷状態番こ応して上記ｆｆ１ｆ
＋ポンプの吐出量を制御する一方、上記温度検出手段の
信号を受（す検出温度力く設定（面以上の高温時にリタ
ーン通路を流れる燃料・の流量が増大するように燃料ｓ
ｒンプの吐出量を１４ｉｉＥ制御する制御回路とを備え
たことを特徴とするエンジンの燃料ポンプ制御装置。(1) There is a carburetor from the fuel tank b) l Yosuzen F1
11 An electric fuel pump for supplying fuel to the valve, and a 1m return path for returning surplus fuel to the fuel tank.
Temperature detection means that outputs the temperature of the carburetor or fuel injection valve 1*, and the engine load condition number
+ While controlling the discharge amount of the pump, the detected temperature is set so that the flow rate of fuel flowing through the return passage increases when the temperature is higher than the surface temperature.
1. A fuel pump control device for an engine, comprising: a control circuit for controlling a discharge amount of an R pump by 14iiE.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2569683A JPS59150971A (en) | 1983-02-17 | 1983-02-17 | Fuel pump control device for engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2569683A JPS59150971A (en) | 1983-02-17 | 1983-02-17 | Fuel pump control device for engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59150971A true JPS59150971A (en) | 1984-08-29 |
Family
ID=12172950
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2569683A Pending JPS59150971A (en) | 1983-02-17 | 1983-02-17 | Fuel pump control device for engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59150971A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6199666U (en) * | 1984-12-06 | 1986-06-25 | ||
| US4827897A (en) * | 1986-09-17 | 1989-05-09 | Nippondenso Co., Ltd. | Fuel pump driving apparatus |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54163219A (en) * | 1978-06-15 | 1979-12-25 | Nissan Motor | Motor driven fuel pump controller |
-
1983
- 1983-02-17 JP JP2569683A patent/JPS59150971A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54163219A (en) * | 1978-06-15 | 1979-12-25 | Nissan Motor | Motor driven fuel pump controller |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6199666U (en) * | 1984-12-06 | 1986-06-25 | ||
| US4827897A (en) * | 1986-09-17 | 1989-05-09 | Nippondenso Co., Ltd. | Fuel pump driving apparatus |
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