JP2013096356A - Fuel supply system - Google Patents

Fuel supply system Download PDF

Info

Publication number
JP2013096356A
JP2013096356A JP2011241984A JP2011241984A JP2013096356A JP 2013096356 A JP2013096356 A JP 2013096356A JP 2011241984 A JP2011241984 A JP 2011241984A JP 2011241984 A JP2011241984 A JP 2011241984A JP 2013096356 A JP2013096356 A JP 2013096356A
Authority
JP
Japan
Prior art keywords
fuel
fuel supply
supply device
flow rate
supply system
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
JP2011241984A
Other languages
Japanese (ja)
Other versions
JP5314106B2 (en
Inventor
Ryu Shinohara
龍 篠原
Takuya Uryu
拓也 瓜生
Yoshihiko Onishi
善彦 大西
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP2011241984A priority Critical patent/JP5314106B2/en
Priority to CN201210174614.2A priority patent/CN103089464B/en
Publication of JP2013096356A publication Critical patent/JP2013096356A/en
Application granted granted Critical
Publication of JP5314106B2 publication Critical patent/JP5314106B2/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Abstract

PROBLEM TO BE SOLVED: To provide a fuel supply system for an internal combustion engine, in which the passage flow rate of a pressure regulation device is controlled by controlling the discharge flow rate of a fuel supply device during non-injection and minimum injection control of a fuel injection device.SOLUTION: The fuel control system includes: a fuel tank 1 which stores fuel therein; a fuel supply device 2 which is driven by a brushless motor 6; a filter 4 which is provided between the fuel tank 1 and the fuel supply device 2; a pressure regulation device 8 which is incorporated into the fuel supply device 2 or installed in the vicinity thereof; a fuel injection device 3 which injects fuel pressurized by the fuel supply device 2; and a control unit 5 which controls opening/closing timing of the fuel injection device 3 and the motor rotating speed of the fuel supply device 2. In the fuel supply system, the discharge flow rate of the fuel supply device is controlled, thereby controlling a flow rate passing through the pressure regulation device 8.

Description

この発明は、例えば筒内直噴式内燃機関等において、燃料供給装置の圧力調整装置により燃料圧力を目標値に制御する燃料供給システムに係り、特に、圧力調整装置の弁部への異物噛み込み等による動作不良を防止する燃料供給システムに関するものである。   The present invention relates to a fuel supply system that controls a fuel pressure to a target value by a pressure adjustment device of a fuel supply device, for example, in a direct injection type internal combustion engine, and in particular, biting of foreign matter into a valve portion of the pressure adjustment device, etc. It is related with the fuel supply system which prevents the malfunctioning by.

一般に内燃機関、例えばシリンダ内にガソリン等の燃料を直接噴射する筒内直噴式内燃機関においては、非常に高い燃料圧力が要求されるため、機関出力で駆動される機械式の高圧燃料ポンプを用いるとともに、その高圧側、即ち吐出側に電子制御型の可変圧力調整装置を設け、吐出された燃料の一部を低圧側へリークすることにより、目標とする燃料圧力に調整するようにした燃料供給システムが多く採用されている。   In general, in an internal combustion engine, for example, a direct injection type internal combustion engine that directly injects fuel such as gasoline into a cylinder, a very high fuel pressure is required. Therefore, a mechanical high-pressure fuel pump driven by engine output is used. At the same time, an electronically controlled variable pressure adjustment device is provided on the high-pressure side, that is, the discharge side, and a fuel supply that adjusts to the target fuel pressure by leaking a part of the discharged fuel to the low-pressure side. Many systems are adopted.

この燃料供給システムとして、従来、例えば特開２０００−４５８３９号公報（特許文献１）に記載されているように、圧力調整装置の弁体とバルブシートとの間の異物の噛み込みや摩耗粉の付着による動作不良を防止するために、圧力調整装置の弁部の異物付着状態に応じて、減速時の燃料カット中に圧力調整装置の弁部開閉時間をデューティ比制御により変化させて、付着している異物を除去することが知られている。   As this fuel supply system, conventionally, for example, as described in Japanese Patent Application Laid-Open No. 2000-45839 (Patent Document 1), foreign matter is caught between the valve body and the valve seat of the pressure adjusting device, and wear powder is removed. In order to prevent malfunction due to adhesion, the valve opening / closing time of the pressure regulator is changed by duty ratio control during fuel cut during deceleration according to the foreign matter adhesion state of the valve of the pressure regulator. It is known to remove foreign matter.

また、例えば特許第３６１２１７５号公報（特許文献２）に記載されているように、燃料圧力のフィードバック制御を行い、燃料圧力の異常を検出した場合に、燃料供給系、及び配管系に混入する異物の除去を目的として、燃料噴射装置の無噴射を含む最小噴射制御条件下で圧力調整装置の弁部をデューティ比制御で全開とすることにより、燃料供給系、及び配管系に混入する異物を除去することが知られている。   Further, as described in, for example, Japanese Patent No. 3612175 (Patent Document 2), foreign matter mixed in the fuel supply system and the piping system when feedback control of the fuel pressure is performed and an abnormality in the fuel pressure is detected. For the purpose of removing fuel, the foreign matter mixed in the fuel supply system and piping system is removed by fully opening the valve of the pressure regulator under duty ratio control under the minimum injection control conditions including no injection of the fuel injection device It is known to do.

更に、例えば特許第３６６３８７０号公報（特許文献３）に記載されているように、内燃機関の回転数、吸入空気量、または内燃機関温度のいずれか一つによって予め定められた供給燃料圧力値が規定の圧力値範囲内から逸脱した場合に、車両の減速時または燃料カット時のいずれか一方において圧力調整装置の弁部開閉時間をデューティ比制御により変化させて、異物を除去することが知られている。   Further, as described in, for example, Japanese Patent No. 3663870 (Patent Document 3), a supply fuel pressure value determined in advance by any one of the rotational speed of the internal combustion engine, the intake air amount, and the internal combustion engine temperature is set. It is known to remove foreign matter by changing the valve opening / closing time of the pressure regulator by duty ratio control either when the vehicle decelerates or when the fuel is cut when the vehicle deviates from the specified pressure value range. ing.

特開２０００−４５８３９号公報JP 2000-45839 A 特許第３６１２１７５号公報Japanese Patent No. 3612175 特許第３６６３８７０号公報Japanese Patent No. 3663870

前記各特許文献に記載された従来技術によれば、圧力調整装置の弁部への異物噛み込み等により燃料圧力異常が発生した場合、または燃料噴射弁の無噴射および最小噴射制御時に、圧力調整装置の弁部開閉時間をデューティ比制御により変化させている。しかし、この場合、周期的に一定時間のみ弁部のリフト量が最大となることから異物が除去出来ない可能性がある。また、デューティ比制御によっては、弁部のリフト量が最大の状態で維持することは可能であるが、製品の小型化の観点から消費電流低減の要求があり、弁部のリフト量を最大状態に維持させる場合は、圧力調整装置へ常時通電する必要があって、消費電流の低減が難しい。   According to the prior art described in each of the above-mentioned patent documents, when a fuel pressure abnormality occurs due to foreign matter biting into the valve portion of the pressure adjusting device, or when no injection and minimum injection control of the fuel injection valve is performed, the pressure adjustment The valve opening / closing time of the apparatus is changed by duty ratio control. However, in this case, since the lift amount of the valve portion is periodically maximized only for a certain period of time, there is a possibility that foreign matter cannot be removed. In addition, depending on the duty ratio control, it is possible to maintain the lift amount of the valve part in the maximum state, but there is a demand for reduction of current consumption from the viewpoint of product miniaturization, and the lift amount of the valve part is in the maximum state. However, it is difficult to reduce current consumption because it is necessary to energize the pressure regulator at all times.

この発明は、前記問題点に鑑みて、燃料噴射装置の無噴射および最小噴射制御時に燃料供給装置の吐出流量を制御することにより圧力調整装置の通過流量を制御する燃料供給システムを提供するものである。   In view of the above problems, the present invention provides a fuel supply system that controls the flow rate of a pressure regulator by controlling the discharge flow rate of the fuel supply device during non-injection and minimum injection control of the fuel injector. is there.

この発明に係る内燃機関の燃料供給システムは、燃料を収容する燃料タンクと、ブラシレスモータで駆動する燃料供給装置と、前記燃料タンクと前記燃料供給装置との間に設けられたフィルタと、前記燃料供給装置に内蔵されるか、又は近傍に設置された圧力調整装置と、前記燃料供給装置で加圧された燃料を噴射する燃料噴射装置と、前記燃料噴射装置の開閉タイミングと前記燃料供給装置のモータ回転速度を制御する制御ユニットからなる燃料供給システムにおいて、前記燃料供給装置の吐出流量を制御することで前記圧力調整装置を通過する流量を制御するものである。   A fuel supply system for an internal combustion engine according to the present invention includes a fuel tank for storing fuel, a fuel supply device driven by a brushless motor, a filter provided between the fuel tank and the fuel supply device, and the fuel A pressure adjusting device built in or in the vicinity of the supply device, a fuel injection device for injecting fuel pressurized by the fuel supply device, opening and closing timing of the fuel injection device, and the fuel supply device In the fuel supply system comprising a control unit for controlling the motor rotation speed, the flow rate passing through the pressure adjusting device is controlled by controlling the discharge flow rate of the fuel supply device.

この発明に係る燃料供給システムによれば、前記構成により圧力調整装置への異物噛みを防止できることから、安定した燃料圧力、及び吐出流量を維持することが可能となり、異物噛みによるエンジンの不調を回避出来る。また、通常作動時の圧力調整装置の通過流量を下げることが可能となり、ポンプの消費電流を低減することができる。   According to the fuel supply system of the present invention, foreign matter biting into the pressure adjusting device can be prevented with the above-described configuration, so that stable fuel pressure and discharge flow rate can be maintained, and engine malfunction due to foreign matter biting can be avoided. I can do it. Further, the flow rate of the pressure adjusting device during normal operation can be reduced, and the current consumption of the pump can be reduced.

この発明の実施の形態１に係る燃料供給システムの構成図である。It is a block diagram of the fuel supply system which concerns on Embodiment 1 of this invention. この発明の実施の形態１に係る燃料供給システムに用いられる燃料ポンプの構成図である。It is a block diagram of the fuel pump used for the fuel supply system which concerns on Embodiment 1 of this invention. この発明の実施の形態１に係る燃料供給システムに用いられる圧力調整装置の構成図である。It is a block diagram of the pressure regulator used for the fuel supply system which concerns on Embodiment 1 of this invention. この発明の実施の形態１に係る燃料供給システムのポンプ回転速度と弁部のリフト量の関係図である。It is a related figure of the pump rotational speed of the fuel supply system which concerns on Embodiment 1 of this invention, and the lift amount of a valve part.

実施の形態１．
この発明の実施の形態１に係る燃料供給システムについて説明する。図１は、実施の形態１に係る燃料供給システムの構成図である。
図１において、燃料供給システム１０は、燃料を収容する燃料タンク１、燃料供給装置２、燃料を吸気管（図示せず）へ吐出する燃料噴射装置３、燃料タンク１と燃料供給装置２との間に設置されたフィルタ４、及び燃料供給装置２と燃料噴射装置３を制御する制御ユニット（以下、ＥＣＵという。）５を備えている。燃料供給装置２は、ブラシレスモータ６、ブラシレスモータ６によって後述のように駆動されるポンプ装置としてのピストンポンプ７、圧力調整装置８、及び燃料圧力保持バルブ９を備えている。なお、燃料タンク１と燃料噴射装置３との間の燃料配管は、燃料が一定方向に流れるリターンレスに構成されている。また、図１においては、圧力調整装置８が燃料供給装置２に内蔵するように図示しているが、圧力調整装置８を燃料供給装置２の近傍に配置してもよい。 Embodiment 1 FIG.
A fuel supply system according to Embodiment 1 of the present invention will be described. FIG. 1 is a configuration diagram of a fuel supply system according to the first embodiment.
In FIG. 1, a fuel supply system 10 includes a fuel tank 1 that contains fuel, a fuel supply device 2, a fuel injection device 3 that discharges fuel to an intake pipe (not shown), a fuel tank 1, and a fuel supply device 2. A filter 4 provided between them, and a control unit (hereinafter referred to as ECU) 5 for controlling the fuel supply device 2 and the fuel injection device 3 are provided. The fuel supply device 2 includes a brushless motor 6, a piston pump 7 as a pump device driven by the brushless motor 6 as described later, a pressure adjusting device 8, and a fuel pressure holding valve 9. Note that the fuel pipe between the fuel tank 1 and the fuel injection device 3 is configured to be returnless so that the fuel flows in a certain direction. In FIG. 1, the pressure adjusting device 8 is illustrated as being built in the fuel supply device 2, but the pressure adjusting device 8 may be disposed in the vicinity of the fuel supply device 2.

ＥＣＵ５は、その指令により燃料噴射装置３の開閉タイミングと噴射量を制御すると共に、ブラシレスモータ６の回転速度を制御する。前記のようにＥＣＵ５から出力される指令によりブラシレスモータ６の回転速度が制御され、ピストンポンプ７が燃料タンク１から燃料を吸入する。ピストンポンプ７は、吸入した燃料を加圧し、燃料噴射装置３から吸気管へ燃料を吐出する。圧力調整装置８は、ピストンポンプ７により加圧されて吐出された燃料の一部をリークすることにより、燃料圧力を目標値に制御する。   The ECU 5 controls the opening / closing timing and the injection amount of the fuel injection device 3 and the rotational speed of the brushless motor 6 according to the command. As described above, the rotational speed of the brushless motor 6 is controlled by the command output from the ECU 5, and the piston pump 7 sucks fuel from the fuel tank 1. The piston pump 7 pressurizes the sucked fuel and discharges the fuel from the fuel injection device 3 to the intake pipe. The pressure adjusting device 8 controls the fuel pressure to a target value by leaking a part of the fuel pressurized and discharged by the piston pump 7.

ブラシレスモータ６の回転速度の制御方法は、エンジンからの要求流量に燃料圧力を一定に保つのに必要な流量（圧力調整装置８を通過する流量）を加算した流量となるように、ＥＣＵ５からブラシレスモータ６へデューティ比指令が出力される。ＥＣＵ５においては、デューティ比とポンプの流量特性の関係がマップ上に設定されており、このマップよりブラシレスモータ６への回転速度が決定される。   The rotational speed of the brushless motor 6 is controlled from the ECU 5 to a flow rate obtained by adding a flow rate required to keep the fuel pressure constant (a flow rate passing through the pressure adjusting device 8) to the required flow rate from the engine. A duty ratio command is output to the motor 6. In the ECU 5, the relationship between the duty ratio and the flow rate characteristic of the pump is set on a map, and the rotational speed to the brushless motor 6 is determined from this map.

図２は、燃料供給装置２を説明する図である。図２において、燃料供給装置２は、燃料タンク１と燃料噴射装置３との間の燃料配管中に配置され、吸入ポートと吐出ポートを有するボディ１１、ブラシレスモータ６の駆動により回転するシャフト１２の軸方向に対して所定の角度で固定され、ブラシレスモータ６の回転に伴って揺動運動を行う揺動体としての斜板１３、斜板１３に当接して配置された複数のピストン１４、ピストン１４のそれぞれを摺動可能に嵌合する複数のシリンダ１５、シリンダ１５のそれぞれに内蔵された前記圧力調整装置８、及び燃料圧力保持バルブ９を保持するケーシング１６を備えている。   FIG. 2 is a diagram illustrating the fuel supply device 2. In FIG. 2, the fuel supply device 2 is arranged in a fuel pipe between the fuel tank 1 and the fuel injection device 3, and includes a body 11 having an intake port and a discharge port, and a shaft 12 that rotates by driving of a brushless motor 6. A swash plate 13 that is fixed at a predetermined angle with respect to the axial direction and that oscillates as the brushless motor 6 rotates, and a plurality of pistons 14 disposed in contact with the swash plate 13, A plurality of cylinders 15 that are slidably fitted to each other, a pressure adjusting device 8 built in each of the cylinders 15, and a casing 16 that holds a fuel pressure holding valve 9 are provided.

燃料供給装置２は、ブラシレスモータ６の駆動によりシャフト１２が回転されると、斜板１３が揺動運動を行い、この揺動運動により複数本配置されたピストン１４がそれぞれ往復運動することで燃料を燃料噴射装置３から吸気管へ吐出する。なお、燃料供給装置２からブラシレスモータ６を除外する部分で前記ピストンポンプ７を構成している。   In the fuel supply device 2, when the shaft 12 is rotated by driving the brushless motor 6, the swash plate 13 performs a swinging motion, and a plurality of pistons 14 arranged in a reciprocating motion by the swinging motion reciprocate each other. Is discharged from the fuel injection device 3 to the intake pipe. Note that the piston pump 7 is configured in a portion where the brushless motor 6 is excluded from the fuel supply device 2.

図３は、圧力調整装置８を説明する図である。図３において、圧力調整装置８は、バルブシート１７、バルブシート１７との間で弁部を構成する弁体であるボールバルブ１８、ボールバルブ１８をバルブシート１７に押圧する押圧手段であるスプリング１９から構成されている。そして、バルブシート１７の上流の燃料圧力によりボールバルブ１８に作用する押圧力Ｐ１とボールバルブ１８を押圧するスプリング１９の押圧力Ｐ２とがバランスすることにより、燃料供給装置２の燃料圧力が調整される。なお、図３中の符号Ｒは、燃料の流れを示している。   FIG. 3 is a diagram for explaining the pressure adjusting device 8. In FIG. 3, the pressure adjusting device 8 includes a valve seat 17, a ball valve 18 that is a valve body that forms a valve portion with the valve seat 17, and a spring 19 that is a pressing unit that presses the ball valve 18 against the valve seat 17. It is composed of The fuel pressure of the fuel supply device 2 is adjusted by balancing the pressing force P1 acting on the ball valve 18 by the fuel pressure upstream of the valve seat 17 and the pressing force P2 of the spring 19 pressing the ball valve 18. The In addition, the code | symbol R in FIG. 3 has shown the flow of the fuel.

次に、実施の形態１に係る燃料供給システムの動作について説明する。
通常作動時においては、ピストンポンプ７は、エンジン側からの要求流量に燃料圧力を一定に保つのに必要な流量（圧力調整装置８を通過する流量）を加算した所定の流量を吐出し、燃料噴射装置３から所定量の燃料を噴射する。このとき、圧力調整装置８を通過する流量は一定に保たれた状態となる。 Next, the operation of the fuel supply system according to Embodiment 1 will be described.
During normal operation, the piston pump 7 discharges a predetermined flow rate obtained by adding a flow rate required to keep the fuel pressure constant (flow rate passing through the pressure adjusting device 8) to the required flow rate from the engine side. A predetermined amount of fuel is injected from the injection device 3. At this time, the flow rate passing through the pressure adjusting device 8 is kept constant.

従来装置では燃料圧力異常を検出するための圧力センサを設置していたが、この実施の形態では、通常の車両運転時において減速する状態は常時発生することから、圧力センサは設置せず、車両が減速して燃料噴射装置３の燃料噴射量が所定量より減少した場合に、圧力調整装置８の弁部（バルブシート１７とボールバルブ１８により構成される）のリフト量が最大となるように、ピストンポンプ７の吐出流量を最大とする指令がＥＣＵ５からブラシレスモータ６へ出力される。これにより、圧力調整装置８の前記弁部に噛み込んでいた異物の除去、及び圧力調整装置８の上流に滞留していた異物の除去が可能となる。   In the conventional apparatus, a pressure sensor for detecting a fuel pressure abnormality is installed. However, in this embodiment, since a state where the vehicle is decelerated during normal vehicle operation always occurs, the pressure sensor is not installed, and the vehicle When the fuel injection amount of the fuel injection device 3 decreases below a predetermined amount, the lift amount of the valve portion of the pressure adjustment device 8 (comprised of the valve seat 17 and the ball valve 18) is maximized. A command for maximizing the discharge flow rate of the piston pump 7 is output from the ECU 5 to the brushless motor 6. As a result, it is possible to remove the foreign matter biting into the valve portion of the pressure adjusting device 8 and to remove the foreign matter staying upstream of the pressure adjusting device 8.

この実施の形態においては、通常作動時から車両減速時の燃料噴射装置３の噴射量が減少する短時間に上記動作を行う必要があり、ピストンポンプ７を駆動する装置の応答性が必要となる。このため、ピストンポンプ７の回転駆動装置として、電気的摺接部を排除し、摺動抵抗を排除したブラシレスモータ８を採用している。また、消費電流の低減を目的として、ピストンポンプ７の吐出流量を必要最小限に抑えるため高効率のピストンポンプ７を採用している。   In this embodiment, it is necessary to perform the above operation in a short time during which the injection amount of the fuel injection device 3 during vehicle deceleration decreases from the normal operation time, and the responsiveness of the device that drives the piston pump 7 is required. . For this reason, the brushless motor 8 is used as the rotational drive device of the piston pump 7 in which the electrical sliding contact portion is eliminated and the sliding resistance is eliminated. For the purpose of reducing current consumption, a highly efficient piston pump 7 is employed in order to minimize the discharge flow rate of the piston pump 7.

ＥＣＵ５から上記指令が出力されると、図３及び図４に示すように圧力調整装置８の前記弁部のリフト量は、バルブシート１７の上流から流入する燃料による押圧力Ｐ１とボールバルブ１８を押圧するスプリング力Ｐ２の関係でボールバルブ１８の位置（リフト量）が決まるため、ピストンポンプ７の吐出流量の変化が無い限り、前記弁部の最大リフト量を維持することができ、従来装置のように圧力調整装置８の弁部が閉じることは無く、異物の除去を安定して行うことが可能となる。また、圧力調整装置８の前記弁部のリフト量は、ピストンポンプ７の吐出流量の制御のみで調整でき、高効率のピストンポンプ７を採用しているため必要最低限の吐出流量を吐出すれば良く、消費電流を低減できる。   When the above command is output from the ECU 5, the lift amount of the valve portion of the pressure adjusting device 8 is determined by the pressing force P1 by the fuel flowing from the upstream side of the valve seat 17 and the ball valve 18 as shown in FIGS. Since the position (lift amount) of the ball valve 18 is determined depending on the spring force P2 to be pressed, the maximum lift amount of the valve portion can be maintained as long as the discharge flow rate of the piston pump 7 does not change. Thus, the valve part of the pressure adjusting device 8 does not close, and it is possible to stably remove foreign matters. Further, the lift amount of the valve portion of the pressure adjusting device 8 can be adjusted only by controlling the discharge flow rate of the piston pump 7, and since the highly efficient piston pump 7 is employed, if the minimum required discharge flow rate is discharged. Good current consumption can be reduced.

以上のように、実施の形態１に係る燃料供給システムによれば、圧力調整装置８への異物噛みを防止できることから、安定した燃料圧力、及び吐出流量を維持することが可能となり、異物噛みによるエンジンの不調を回避出来る。また、上記制御を実施することで、通常作動時の圧力調整装置８の通過流量を下げることが可能となり、ピストンポンプ７の消費電流の低減ができる。   As described above, according to the fuel supply system according to the first embodiment, it is possible to prevent foreign matter from being bitten into the pressure adjusting device 8, so that it is possible to maintain a stable fuel pressure and discharge flow rate. You can avoid engine malfunction. Further, by performing the above control, it is possible to reduce the flow rate of the pressure adjusting device 8 during normal operation, and the current consumption of the piston pump 7 can be reduced.

なお、前記においては、通常作動時から車両減速時の燃料噴射装置３の噴射量が減少するタイミングにおいて、圧力調整装置８の前記弁部のリフト量が最大となるようにピストンポンプ７の吐出流量を最大とする制御を行ったが、制御を行うタイミングとして、車両のイグニッションキーのオン時において、燃料噴射装置３が動作する前に燃料供給装置２が一定時間駆動する状態があるが、このときに前記と同様の制御を行うことでも同様の効果を得ることができる。   In the above description, the discharge flow rate of the piston pump 7 is maximized so that the lift amount of the valve portion of the pressure adjusting device 8 is maximized at the timing when the injection amount of the fuel injection device 3 decreases during normal vehicle operation and vehicle deceleration. In this case, the fuel supply device 2 is driven for a certain period of time before the fuel injection device 3 operates when the ignition key of the vehicle is turned on. The same effect can be obtained by performing the same control as described above.

また、制御を行うタイミングとして、アイドル時に燃料噴射装置３の噴射量が最小となる状態があるが、このときに前記と同様の制御を行うことでも同様の効果を得ることができる。
なお、この発明は、その発明の範囲内において、実施の形態を適宜、変形、省略することが可能である。 Further, as a timing for performing the control, there is a state in which the injection amount of the fuel injection device 3 is minimized at the time of idling. At this time, the same effect can be obtained by performing the same control as described above.
In the present invention, the embodiments can be appropriately modified and omitted within the scope of the invention.

１ 燃料タンク ２ 燃料供給装置
３ 燃料噴射装置 ４ フィルタ
５ 制御ユニット（ＥＣＵ） ６ ブラシレスモータ
７ ピストンポンプ ８ 圧力調整装置
９ 燃料圧力保持バルブ １０ 燃料供給システム
１１ ボディ １２ シャフト
１３ 斜板 １４ ピストン
１５ シリンダ １６ ケーシング
１７ バルブシート １８ ボールバルブ
１９ スプリング Ｐ１ 燃料による押圧力
Ｐ２ スプリング力 Ｒ 燃料の流れ DESCRIPTION OF SYMBOLS 1 Fuel tank 2 Fuel supply apparatus 3 Fuel injection apparatus 4 Filter 5 Control unit (ECU) 6 Brushless motor 7 Piston pump 8 Pressure regulator 9 Fuel pressure holding valve 10 Fuel supply system 11 Body 12 Shaft 13 Swash plate 14 Piston 15 Cylinder 16 Casing 17 Valve seat 18 Ball valve 19 Spring P1 Fuel pressure P2 Spring force R Fuel flow

Claims (5)

燃料を収容する燃料タンクと、ブラシレスモータで駆動する燃料供給装置と、前記燃料タンクと前記燃料供給装置との間に設けられたフィルタと、前記燃料供給装置に内蔵されるか、又は近傍に設置された圧力調整装置と、前記燃料供給装置で加圧された燃料を噴射する燃料噴射装置と、前記燃料噴射装置の開閉タイミングと前記燃料供給装置のモータ回転速度を制御する制御ユニットからなる燃料供給システムにおいて、
前記燃料供給装置の吐出流量を制御することで前記圧力調整装置を通過する流量を制御することを特徴とする燃料供給システム。 A fuel tank that contains fuel, a fuel supply device that is driven by a brushless motor, a filter that is provided between the fuel tank and the fuel supply device, and is built in or near the fuel supply device A fuel supply comprising a pressure adjusting device, a fuel injection device for injecting fuel pressurized by the fuel supply device, and a control unit for controlling the opening / closing timing of the fuel injection device and the motor rotation speed of the fuel supply device In the system,
A fuel supply system, wherein a flow rate passing through the pressure adjusting device is controlled by controlling a discharge flow rate of the fuel supply device. 前記燃料噴射装置までの配管はリターンレスとし、前記燃料供給装置に前記圧力調整装置を内蔵するか、又は近傍に配置したことを特徴とする請求項１に記載の燃料供給システム。   2. The fuel supply system according to claim 1, wherein a pipe to the fuel injection device is returnless, and the pressure adjustment device is built in the fuel supply device or arranged in the vicinity thereof. 前記燃料供給装置のモータ回転速度制御は、前記圧力調整装置の通過流量を、前記燃料噴射装置の停止時において前記燃料供給装置の吐出流量が最大となるように制御することを特徴とする請求項１又は２に記載の燃料供給システム。   The motor rotation speed control of the fuel supply device controls the passage flow rate of the pressure adjusting device so that the discharge flow rate of the fuel supply device becomes maximum when the fuel injection device is stopped. The fuel supply system according to 1 or 2. 車両のイグニッションキーのオン時、及び前記車両の運転時は、アクセルオフの燃料カット時において、前記燃料供給装置の吐出流量を最大となるように制御することを特徴とする請求項１から３の何れか一項に記載の燃料供給システム。   4. The control device according to claim 1, wherein when the ignition key of the vehicle is turned on and when the vehicle is in operation, the fuel supply device is controlled to maximize the discharge flow rate when the fuel is cut off with the accelerator off. The fuel supply system according to any one of the above. 燃料を収容する燃料タンクと、ブラシレスモータで駆動する燃料供給装置と、前記燃料タンクと前記燃料供給装置との間に設けられたフィルタと、前記燃料供給装置に内蔵されるか、又は近傍に設置された圧力調整装置と、前記燃料供給装置で加圧された燃料を内燃機関に噴射する燃料噴射装置と、前記燃料噴射装置の開閉タイミングと前記燃料供給装置のモータ回転速度を制御する制御ユニットからなる燃料供給システムにおいて、
前記燃料供給装置は回転速度制御範囲の広い容積型ピストンポンプとすることを特徴とする燃料供給システム。 A fuel tank that contains fuel, a fuel supply device that is driven by a brushless motor, a filter that is provided between the fuel tank and the fuel supply device, and is built in or near the fuel supply device A pressure adjusting device, a fuel injection device that injects fuel pressurized by the fuel supply device into an internal combustion engine, and a control unit that controls the opening and closing timing of the fuel injection device and the motor rotation speed of the fuel supply device. In the fuel supply system
The fuel supply system is a positive displacement piston pump having a wide rotational speed control range.
JP2011241984A 2011-11-04 2011-11-04 Fuel supply system Expired - Fee Related JP5314106B2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2011241984A JP5314106B2 (en) 2011-11-04 2011-11-04 Fuel supply system
CN201210174614.2A CN103089464B (en) 2011-11-04 2012-05-30 Fuel supply system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2011241984A JP5314106B2 (en) 2011-11-04 2011-11-04 Fuel supply system

Publications (2)

Publication Number Publication Date
JP2013096356A true JP2013096356A (en) 2013-05-20
JP5314106B2 JP5314106B2 (en) 2013-10-16

Family

ID=48202481

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2011241984A Expired - Fee Related JP5314106B2 (en) 2011-11-04 2011-11-04 Fuel supply system

Country Status (2)

Country Link
JP (1) JP5314106B2 (en)
CN (1) CN103089464B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105402060A (en) * 2015-11-23 2016-03-16 沈阳黎明航空发动机(集团)有限责任公司 Oil supply device and method for frequency conversion and speed control of fuel pump for fuel machine

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104613510B (en) * 2015-02-02 2017-02-22 赵宽 Alcohol-based fuel supplying device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10339227A (en) * 1997-06-10 1998-12-22 Hitachi Ltd Hydraulic pressure regulating device
JP3663870B2 (en) * 1997-12-25 2005-06-22 日産自動車株式会社 In-cylinder injection internal combustion engine control device
JP3843484B2 (en) * 1995-07-31 2006-11-08 株式会社デンソー Returnless internal combustion engine fuel supply device and adjustment method thereof
JP2008121594A (en) * 2006-11-14 2008-05-29 Denso Corp Fuel system abnormality detection device

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000045839A (en) * 1998-07-24 2000-02-15 Nissan Motor Co Ltd Control device of variable pressure regulator for internal combustion engine
JP4922906B2 (en) * 2007-12-10 2012-04-25 日立オートモティブシステムズ株式会社 High pressure fuel supply device and control device for internal combustion engine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3843484B2 (en) * 1995-07-31 2006-11-08 株式会社デンソー Returnless internal combustion engine fuel supply device and adjustment method thereof
JPH10339227A (en) * 1997-06-10 1998-12-22 Hitachi Ltd Hydraulic pressure regulating device
JP3663870B2 (en) * 1997-12-25 2005-06-22 日産自動車株式会社 In-cylinder injection internal combustion engine control device
JP2008121594A (en) * 2006-11-14 2008-05-29 Denso Corp Fuel system abnormality detection device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105402060A (en) * 2015-11-23 2016-03-16 沈阳黎明航空发动机(集团)有限责任公司 Oil supply device and method for frequency conversion and speed control of fuel pump for fuel machine
CN105402060B (en) * 2015-11-23 2018-02-23 沈阳黎明航空发动机(集团)有限责任公司 The fueller and fuel supply method of a kind of combustion engine fuel pump variable frequency regulating speed control

Also Published As

Publication number Publication date
JP5314106B2 (en) 2013-10-16
CN103089464B (en) 2015-08-26
CN103089464A (en) 2013-05-08

Similar Documents

Publication Publication Date Title
JP4489951B2 (en) Fuel supply device for internal combustion engine
JP4453623B2 (en) Fuel injection device and abnormality detection method for fuel injection device
JP5212546B2 (en) Fuel supply device
JP3170381U (en) High pressure flow variable pump for fuel injection system
JP5235968B2 (en) Fuel supply system
US6976473B2 (en) Fuel injection system for an internal combustion engine
JP2005036794A (en) Accumulator fuel injection system
CN103282642B (en) Stroke changeable control structure for high pressure fuel pump
JP2006503205A (en) Operating method of common rail fuel injection system for internal combustion engine
US20140003966A1 (en) High pressure fuel pump
JP2004308575A (en) Accumulator fuel injection apparatus
JP5989406B2 (en) Fuel pressure control device
JP2015014221A (en) Control device of high pressure pump
JP5314106B2 (en) Fuel supply system
JP2006017111A (en) Device for adjusting pressure/flow in internal combustion engine fuel injection device
JP4572776B2 (en) Flow control valve
JP5692131B2 (en) High pressure pump control device
JP4075567B2 (en) Fuel supply device for internal combustion engine
JP2007046501A (en) High-pressure fuel supply device
JP4407647B2 (en) Fuel injection device for internal combustion engine
JP4329755B2 (en) High pressure fuel pump for internal combustion engine
WO2010082217A1 (en) A fuel injection system for an internal combustion engine
JP2012202382A (en) Fuel supply system
JP2013057269A (en) Flow control valve
JP2009068462A (en) Fuel supply device

Legal Events

Date Code Title Description
A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20130327

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20130618

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20130704

R151 Written notification of patent or utility model registration

Ref document number: 5314106

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R151

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

LAPS Cancellation because of no payment of annual fees