JPH039067A - Fuel injection device for internal combustion engine - Google Patents

Fuel injection device for internal combustion engine

Info

Publication number
JPH039067A
JPH039067A JP14316589A JP14316589A JPH039067A JP H039067 A JPH039067 A JP H039067A JP 14316589 A JP14316589 A JP 14316589A JP 14316589 A JP14316589 A JP 14316589A JP H039067 A JPH039067 A JP H039067A
Authority
JP
Japan
Prior art keywords
fuel
fuel injection
pumps
pump
engine
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
Application number
JP14316589A
Other languages
Japanese (ja)
Other versions
JP2759502B2 (en
Inventor
Katsumi Torikai
鳥飼 克己
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yamaha Marine Co Ltd
Original Assignee
Sanshin Kogyo KK
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sanshin Kogyo KK filed Critical Sanshin Kogyo KK
Priority to JP1143165A priority Critical patent/JP2759502B2/en
Publication of JPH039067A publication Critical patent/JPH039067A/en
Application granted granted Critical
Publication of JP2759502B2 publication Critical patent/JP2759502B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Fuel-Injection Apparatus (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)

Abstract

PURPOSE:To prevent fuel temperature rise by providing plural motor-driven fuel pumps for force feeding the fuel in a fuel tank into an injection valve and increasing/decreasing the number of driven fuel pumps with the increase/ decrease of the fuel injection quantity required for an engine according to the operating status of the engine. CONSTITUTION:An electromagnetic fuel injection valve 46 for injecting lubricating oil mixed fuel is provided at an intake air pipe 26 connected to an intake port 30 provided at a cylinder 12. The fuel boosted by a fuel pump 44 is fed to the fuel injection valve 46, and the pressure of the force-fed fuel is held to the constant value by a pressure regulator 48. The injection quantity of the fuel injection valve 46 is controlled by a control unit 58 incorporating an engine speed signal N and the like. In this case, two fuel pumps 44A, 44B are provided as a fuel injection pump 44, and when the fuel injection operated by the control unit 58 is less than the critical injection quantity, only the pump 44A is driven, but when the fuel injection quantity exceeds the critical injection quantity, both pumps 44A, 44B are driven.

Description

【発明の詳細な説明】 [産業上の利用分野] 本発明は、船外機等に用いて好適な内燃機関の燃料噴射
装置に関する。
DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a fuel injection device for an internal combustion engine suitable for use in outboard motors and the like.

[従来の技術] 内燃機関に用いられる燃料噴射装置は、燃焼室への吸気
経路に燃料を噴射する燃料噴射弁と、燃料タンクの燃料
を」ユ記噴射弁へ圧送する電動式燃料ポンプと、燃料ポ
ンプより上記噴射弁へ供給される燃料圧が所定の圧力以
上になると開いて燃料の一部を燃料タンクへ還流させ、
噴射燃料圧を一定に保つ圧力調整器とを備えて構成され
る。
[Prior Art] A fuel injection device used in an internal combustion engine includes a fuel injection valve that injects fuel into an intake path to a combustion chamber, an electric fuel pump that pumps fuel from a fuel tank to the injection valve, and When the fuel pressure supplied from the fuel pump to the injection valve exceeds a predetermined pressure, it opens and a part of the fuel is returned to the fuel tank,
It is constructed with a pressure regulator that keeps the injected fuel pressure constant.

ここで、機関の排気量か大きくなると、必要な燃料噴射
量も多くなる。このため、機関の容量に見合う燃料ポン
プか必要になる。
Here, as the displacement of the engine increases, the required amount of fuel injection also increases. For this reason, a fuel pump that matches the capacity of the engine is required.

[発明が解決しようとする課題] 然るに、燃料ポンプが大型なると、■ポンプの消費電力
が増加する、■低負荷時のリターン燃料が多くなる。こ
のため、上記■により、機関低回転時の発電能力が低い
時でも常に大電力を消費し、バッテリが放電してしまう
。又、上記■により、長時間低負荷運転を続けた場合、
常に多量の燃料が発熱状態にあるポンプを通過してリタ
ーンするため、燃料温度が上昇し、ベーノぐ一ロックな
起こすおそれかある。
[Problems to be Solved by the Invention] However, as the fuel pump becomes larger, (1) power consumption of the pump increases, and (2) more fuel is returned during low load. Therefore, due to (1) above, a large amount of power is always consumed and the battery is discharged even when the power generation capacity is low at low engine speeds. Also, due to the above ■, if low load operation continues for a long time,
Since a large amount of fuel always passes through the pump, which generates heat, and returns, the fuel temperature rises and there is a risk of the valve locking.

本発明は、電動式燃料ポンプが圧送する燃料を圧力調整
器にて一定の圧力に調整しながら噴射弁から噴射するに
際し、消費電力を少なく、かつ燃料の温度]−昇を少な
くすることを目的とする。
An object of the present invention is to reduce power consumption and reduce fuel temperature rise when the electric fuel pump injects fuel from an injection valve while adjusting the pressure to a constant pressure using a pressure regulator. shall be.

[課題を解決するための手段] 本発明は、燃焼室への吸気経路に燃料を噴射する燃料噴
射弁と、燃料タンクの燃料を上記噴射弁へ圧送する電動
式燃料ポンプと、燃料ポンプより」二記噴射弁へ供給さ
れる燃料圧か所定の圧力以上になると開いて燃料の一部
を燃料タンクへ還流させ、噴射燃料圧な一定に保つ圧力
調整器とを備えて構成される内燃機関の燃料噴射装置に
おいて、前記電動式燃料ポンプとして複数台の燃料ポン
プを 設番ツ、機関か必要とする燃料噴射量か機関の運
転状況に応じて増減するに従い、上記燃料ポンプの駆動
台数を増減制御するようにしたものである。
[Means for Solving the Problems] The present invention provides a fuel injection valve that injects fuel into an intake path to a combustion chamber, an electric fuel pump that pressure-feeds fuel from a fuel tank to the injection valve, and a fuel pump. An internal combustion engine that is equipped with a pressure regulator that opens when the fuel pressure supplied to the injection valve exceeds a predetermined pressure, allowing a portion of the fuel to flow back into the fuel tank and keeping the injected fuel pressure constant. In the fuel injection system, a plurality of fuel pumps are installed as the electric fuel pumps, and the number of driven fuel pumps is controlled to increase or decrease as the number increases or decreases depending on the engine, the required fuel injection amount, or the operating status of the engine. It was designed to do so.

[作用] 本発明によれは、機関の容量に見合う燃料ポンプを装備
するに際し、1個の大容量ポンプを用いるのてなく、複
数個の小容量ポンプを用いることになる。
[Function] According to the present invention, when installing a fuel pump suitable for the capacity of the engine, a plurality of small capacity pumps are used instead of one large capacity pump.

そして、機関か必要とする燃料噴射量か少ない場合には
例えば1個のポンプを駆動し、結果として、消費電力を
少なく、かつリターン燃料を減少させることにて燃料の
温度」1昇を抑えることかてきる。
When the amount of fuel injection required by the engine is small, for example, one pump is driven, and as a result, power consumption is reduced and return fuel is reduced, thereby suppressing the rise in fuel temperature. It comes.

尚、機関か必要とする燃料噴射量か多くなれば、例えは
全数のポンプを駆動することにて、確実に燃料供給でき
る。
Incidentally, if the amount of fuel injection required by the engine increases, the fuel can be reliably supplied by, for example, driving all the pumps.

[実施例コ 第1図は本発明の一実施例を示す制御系統図、第2図は
ポンプ駆動台数を制御する一例を示す流れ図、第3図は
船外機を示す模式図である。
[Embodiment] Fig. 1 is a control system diagram showing one embodiment of the present invention, Fig. 2 is a flow chart showing an example of controlling the number of pumps driven, and Fig. 3 is a schematic diagram showing an outboard motor.

第3図で、船外機1は、船舶2に取付けて用いられ、推
進ユニット3の上部に2サイクル内燃機関10を搭載し
ている。船外機1は、内燃機関10の回転力をドライソ
軸4によりプロペラ5に伝え、船舶2を推進せしめる。
In FIG. 3, an outboard motor 1 is used attached to a boat 2, and a two-stroke internal combustion engine 10 is mounted on the upper part of a propulsion unit 3. The outboard motor 1 transmits the rotational force of the internal combustion engine 10 to the propeller 5 through the dry rotor shaft 4 to propel the boat 2.

然るに、第1図は本発明による内燃機関10の燃料供給
装置を示す制御系統図゛Cあり、12はシリンダ、14
はピストン、15は燃焼室、16は点火栓、18はクラ
ンクケース、20はクランク軸、22はコンロッ1〜で
ある。クランクケース18内にクランク室24が形成さ
れる。
However, FIG. 1 is a control system diagram ``C'' showing a fuel supply system for an internal combustion engine 10 according to the present invention, in which 12 is a cylinder, 14 is a control system diagram ``C'', and 12 is a cylinder;
1 is a piston, 15 is a combustion chamber, 16 is a spark plug, 18 is a crankcase, 20 is a crankshaft, and 22 is a cooking stove 1-. A crank chamber 24 is formed within the crankcase 18.

26は吸気管てあり、この吸気管26はリード弁28を
介して吸気ボート30に接続されている。
26 is an intake pipe, and this intake pipe 26 is connected to an intake boat 30 via a reed valve 28.

32は排気ポート、34は排気管である。尚、シリンダ
12には掃気ボー1〜36が開口し、この掃気ボート3
6は掃気通路38によりクランク室24へ連通している
32 is an exhaust port, and 34 is an exhaust pipe. Incidentally, the scavenging boats 1 to 36 are opened in the cylinder 12, and the scavenging boats 3
6 communicates with the crank chamber 24 through a scavenging passage 38.

40は潤滑油混合燃料のタンク、42は燃料中のごみを
除去するためのストレーナ、44は電動式燃料ポンプで
ある。46は吸気管26に潤滑油混合燃料を噴射する電
磁式燃料噴射弁であり、この噴射弁46へは燃料ポンプ
44より圧送された燃料か供給されている。48は圧力
調整器であって、燃料ポンプ44より噴射弁46へ圧送
される燃料圧を一定に保つ。即ち、燃料ポンプ44より
噴射弁46へ供給される燃料圧が所定の圧力以」二にな
ると圧力調整器48が開き燃料の一部をパイプ50を介
して前記燃料タンク40へ還流させる。
40 is a lubricating oil mixed fuel tank, 42 is a strainer for removing dust from the fuel, and 44 is an electric fuel pump. Reference numeral 46 denotes an electromagnetic fuel injection valve that injects lubricating oil-mixed fuel into the intake pipe 26, and fuel pumped from the fuel pump 44 is supplied to this injection valve 46. Reference numeral 48 denotes a pressure regulator that keeps the pressure of the fuel fed from the fuel pump 44 to the injection valve 46 constant. That is, when the fuel pressure supplied from the fuel pump 44 to the injection valve 46 reaches a predetermined pressure or higher, the pressure regulator 48 opens and a portion of the fuel is returned to the fuel tank 40 via the pipe 50.

52はクランクラ“−ス18に把料けられたJ下方セン
サてあり、クランク室24の内圧を検出し、この内圧に
対応した電圧の電気信号、即ち圧力信号Pを出力する。
Reference numeral 52 denotes a J lower sensor which is attached to the crankshaft 18 and detects the internal pressure of the crank chamber 24, and outputs an electric signal of a voltage corresponding to this internal pressure, that is, a pressure signal P.

54は燃焼室15への吸入空気量を制御するスロットル
弁である。
54 is a throttle valve that controls the amount of air taken into the combustion chamber 15.

56は機関回転速度を検出する回転速度検出装置であり
、検出速度に対応した電圧の電気信号、即ち回転速度信
号Nを出力する。
A rotation speed detection device 56 detects the engine rotation speed, and outputs an electric signal of a voltage corresponding to the detected speed, that is, a rotation speed signal N.

然るに、内燃機関10にあっては、前記燃料ポンプ44
として、2台の燃料ポンプ44(AとB)を設けている
However, in the internal combustion engine 10, the fuel pump 44
As such, two fuel pumps 44 (A and B) are provided.

58は、上記2台の燃料ポンプ44(AとB)、及び燃
料噴射弁46を駆動制御する制御ユニットであり、第2
図に示すように、下記の如くの制御動作を行なう。
58 is a control unit that drives and controls the two fuel pumps 44 (A and B) and the fuel injection valve 46;
As shown in the figure, the following control operations are performed.

(1)基本噴射時間′1゛の決定 機関の運転状況に最適な燃料噴射量を、この制御ユニッ
ト58内に予め記憶された演算プログラムにtノYって
算出し、基本噴射信号■の基本噴射時間Tを決定する。
(1) Determining the basic injection time '1' The optimum fuel injection amount for the operating conditions of the engine is calculated by using the calculation program stored in advance in this control unit 58, and the basic injection signal Determine the injection time T.

この基本噴射信号■はクランク軸20の回転角度θに同
期する間欠的な基本噴射時間′I゛の電気信号(噴射パ
ルスT)−Cあり、噴射弁46内の電磁ソレノイドをこ
の基本噴射時間工によって作動させ、噴射弁46を開く
ものである。
This basic injection signal (■) has an electric signal (injection pulse T) -C with an intermittent basic injection time 'I' synchronized with the rotation angle θ of the crankshaft 20, and the electromagnetic solenoid in the injection valve 46 is activated during this basic injection time period. , and the injection valve 46 is opened.

この時、制御ユニット58は、例えば、前記圧力信号P
を得て、このクランク室内圧Pの変動量によって吸入空
気量を検出し、基本時間Tをこの吸入空気量に応じて決
定し、運転状況に対応した最適な混合気濃度を得るもの
である。
At this time, the control unit 58 controls the pressure signal P, for example.
The intake air amount is detected based on the amount of variation in the crank chamber pressure P, and the basic time T is determined according to the intake air amount, thereby obtaining the optimum mixture concentration corresponding to the operating situation.

(2)燃料噴射量Qの決定 制御ユニット58は前記回転速度信号Nを連続的に取込
み、この制御ユニッ1〜58内に予め記憶されている演
算プログラムに従って、■機関の 1回転あたりの噴射
量qを、上記(1)で求めた基本噴射時間Tと、機関が
備える噴射弁460個数n(各気筒に1個の噴射弁46
を☆111え、全(i気筒であれば、n=6個)とから
求め、■上記■て求めたqに、今回の検出回転速度Nを
乗じ、椙、関の全体に今回単位時間あたりに必要とされ
る全燃料噴射量Qを求める (3)単一の燃料ポンプ44 (A)のみ駆動制御ユニ
ッ1へ58は、上記(2)にて求めた燃料噴射量Qを、
予め定めである臨界噴射量QOに対して比較する。結果
、燃料噴射量Qが臨界噴射量QOより少ない場合には、
単一のポンプ44(A)のみ駆動させる。
(2) Determining the fuel injection amount Q The control unit 58 continuously takes in the rotational speed signal N, and determines the injection amount per revolution of the engine according to the calculation program stored in advance in the control units 1 to 58. q is calculated based on the basic injection time T obtained in (1) above and the number n of 460 injection valves provided in the engine (one injection valve 46 for each cylinder).
☆111, calculate from all (for i cylinder, n = 6 pieces), multiply q obtained from ■ above by the current detected rotational speed N, and calculate the total of Sugi and Seki per unit time this time. (3) The single fuel pump 44 (A) only to the drive control unit 1 58 calculates the total fuel injection amount Q determined in (2) above.
Comparison is made with a predetermined critical injection amount QO. As a result, if the fuel injection amount Q is less than the critical injection amount QO,
Only a single pump 44(A) is driven.

(4)2個の燃料ポンプ(AとB)駆動制御ユニット5
8は、燃料噴射量Qが臨界噴射量QOより多い場合には
、2台の燃料ポンプ44(AとB)を駆動させる。
(4) Two fuel pumps (A and B) drive control unit 5
8 drives two fuel pumps 44 (A and B) when the fuel injection amount Q is greater than the critical injection amount QO.

次に、上記実施例の作用について説明する。Next, the operation of the above embodiment will be explained.

上記実施例によれば、機関の容量に見合う燃料ポンプを
装備するに際し、1台の大容量ポンプを用いるの°Cな
く、2台の小容量ポンプ44(Aと1.3 )を用いる
ことになる。
According to the above embodiment, when equipping the engine with a fuel pump that matches the capacity of the engine, two small capacity pumps 44 (A and 1.3 °C) are used instead of one large capacity pump. Become.

そして、機関か必要どする燃料噴射量か少ない場合には
1個のポンプ(A)のみを駆動し、結果とし°C1消費
電力を少なく、かつリターン燃料を減少させることにて
燃料の温度上昇を抑えることかてきる。
When the amount of fuel injection required by the engine is small, only one pump (A) is driven, resulting in less power consumption in °C1 and a reduction in the return fuel to reduce the temperature rise of the fuel. I can suppress it.

尚、機関か必要とする燃料噴射量が多くなれば、2台の
ポンプ44(AとB)を駆動することにて、確実に燃料
イ共給てきる。
Incidentally, if the amount of fuel injection required by the engine increases, by driving the two pumps 44 (A and B), the fuel can be reliably supplied together.

尚、本発明の実施において、燃料ポンプの駆動台数を増
減制御する判定基準は、上述の如くの燃料噴射a Qの
大小によらず、燃料噴射量Qにほぼ相関する機関回転速
度Nの大小によるものてあつ°Cも良い。即43、回転
速度Nか臨界速度NOより少ない場合には、必要とされ
る燃料噴射量Qが臨界噴E1・1量QOより少ないもの
と見て、例えは単一の燃料ポンプのみを駆動させる。又
、回転速度Nか臨界速度NOより多い場合には、必要と
されるす熱料111’i射:IQか臨界噴q・i 11
)、 Q Oより多いものと見て、例えは2台の燃料ポ
ンプを151<動させる。
In the implementation of the present invention, the criterion for increasing or decreasing the number of driven fuel pumps is not based on the magnitude of the fuel injection aQ as described above, but is based on the magnitude of the engine rotation speed N, which is approximately correlated with the fuel injection amount Q. The temperature is also good. Therefore, if the rotational speed N is less than the critical speed NO, the required fuel injection amount Q is considered to be less than the critical injection amount QO, and for example, only a single fuel pump is driven. . In addition, when the rotational speed N is greater than the critical speed NO, the required heating material 111'i injection: IQ or critical injection q・i 11
), Q Assuming that there are more than O, for example, two fuel pumps are operated at 151<.

[発明の効果] 以上のように本発明によれば、電動式燃4:41ポンプ
か圧送する燃料を圧力調整器にて一定の圧力に調整しな
から噴射弁からurj射するに際し、消費電力を少なく
、かつ燃料の温度上昇を少なくすることができる。
[Effects of the Invention] As described above, according to the present invention, the power consumption is reduced when the fuel to be pumped by the electric fuel pump is adjusted to a constant pressure with the pressure regulator and then injected from the injection valve. It is possible to reduce the temperature rise of the fuel.

【図面の簡単な説明】[Brief explanation of drawings]

第1図は本発明の−・実施例を示す制御系統図、第2図
はポンプ駆動台数を制御する一例を小ず流れ図、第3図
は船外機を示す模式図である。 10・・・内燃機関、 15・・・燃焼室、 40・・・タンク、 44・・・燃料ポンプ、 46・・・燃料噴射弁(燃料噴射装置’:l: )、4
8・・・圧力調整器、 58・・・制御ユニット。
FIG. 1 is a control system diagram showing an embodiment of the present invention, FIG. 2 is a flowchart showing an example of controlling the number of pumps driven, and FIG. 3 is a schematic diagram showing an outboard motor. DESCRIPTION OF SYMBOLS 10... Internal combustion engine, 15... Combustion chamber, 40... Tank, 44... Fuel pump, 46... Fuel injection valve (fuel injection device':l:), 4
8... Pressure regulator, 58... Control unit.

Claims (1)

【特許請求の範囲】[Claims] (1)燃焼室への吸気経路に燃料を噴射する燃料噴射弁
と、燃料タンクの燃料を上記噴射弁へ圧送する電動式燃
料ポンプと、燃料ポンプより上記噴射弁へ供給される燃
料圧が所定の圧力以上になると開いて燃料の一部を燃料
タンクへ還流させ、噴射燃料圧を一定に保つ圧力調整器
とを備えて構成される内燃機関の燃料噴射装置において
、前記電動式燃料ポンプとして複数台の燃料ポンプを設
け、機関が必要とする燃料噴射量が機関の運転状況に応
じて増減するに従い、上記燃料ポンプの駆動台数を増減
制御することを特徴とする内燃機関の燃料噴射装置。
(1) A fuel injection valve that injects fuel into the intake path to the combustion chamber, an electric fuel pump that pressure-feeds fuel from the fuel tank to the injection valve, and a predetermined fuel pressure supplied from the fuel pump to the injection valve. In a fuel injection device for an internal combustion engine, the fuel injection device for an internal combustion engine is configured to include a pressure regulator that opens when the pressure exceeds the pressure of 1. A fuel injection device for an internal combustion engine, characterized in that the number of driven fuel pumps is controlled to increase or decrease as the amount of fuel injection required by the engine increases or decreases depending on the operating condition of the engine.
JP1143165A 1989-06-07 1989-06-07 Fuel injection device for internal combustion engine for outboard motor Expired - Fee Related JP2759502B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1143165A JP2759502B2 (en) 1989-06-07 1989-06-07 Fuel injection device for internal combustion engine for outboard motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1143165A JP2759502B2 (en) 1989-06-07 1989-06-07 Fuel injection device for internal combustion engine for outboard motor

Publications (2)

Publication Number Publication Date
JPH039067A true JPH039067A (en) 1991-01-16
JP2759502B2 JP2759502B2 (en) 1998-05-28

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JP1143165A Expired - Fee Related JP2759502B2 (en) 1989-06-07 1989-06-07 Fuel injection device for internal combustion engine for outboard motor

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62263917A (en) * 1986-05-08 1987-11-16 Ibiden Co Ltd High heat-resistant roll
US6899084B2 (en) 2003-02-06 2005-05-31 Toyota Jidosha Kabushiki Kaisha Fuel supply system for internal combustion engine
CN111810307A (en) * 2019-04-10 2020-10-23 丰田自动车株式会社 Control system for internal combustion engine and internal combustion engine

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56146053A (en) * 1980-04-11 1981-11-13 Toyota Motor Corp Controlling device for fuel pump of engine
JPS58122771U (en) * 1982-02-15 1983-08-20 日産自動車株式会社 Internal combustion engine fuel supply system
JPS6216760U (en) * 1985-07-15 1987-01-31
JPS62288359A (en) * 1986-06-05 1987-12-15 Nippon Denso Co Ltd Fuel supply device for fuel injection type engine
JPS63146159U (en) * 1987-03-16 1988-09-27

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56146053A (en) * 1980-04-11 1981-11-13 Toyota Motor Corp Controlling device for fuel pump of engine
JPS58122771U (en) * 1982-02-15 1983-08-20 日産自動車株式会社 Internal combustion engine fuel supply system
JPS6216760U (en) * 1985-07-15 1987-01-31
JPS62288359A (en) * 1986-06-05 1987-12-15 Nippon Denso Co Ltd Fuel supply device for fuel injection type engine
JPS63146159U (en) * 1987-03-16 1988-09-27

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62263917A (en) * 1986-05-08 1987-11-16 Ibiden Co Ltd High heat-resistant roll
US6899084B2 (en) 2003-02-06 2005-05-31 Toyota Jidosha Kabushiki Kaisha Fuel supply system for internal combustion engine
CN111810307A (en) * 2019-04-10 2020-10-23 丰田自动车株式会社 Control system for internal combustion engine and internal combustion engine
CN111810307B (en) * 2019-04-10 2022-05-17 丰田自动车株式会社 Control system for internal combustion engine and internal combustion engine

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