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JP2007303360A - Fuel supply device - Google Patents

Fuel supply device Download PDF

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Publication number
JP2007303360A
JP2007303360A JP2006132267A JP2006132267A JP2007303360A JP 2007303360 A JP2007303360 A JP 2007303360A JP 2006132267 A JP2006132267 A JP 2006132267A JP 2006132267 A JP2006132267 A JP 2006132267A JP 2007303360 A JP2007303360 A JP 2007303360A
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JP
Japan
Prior art keywords
fuel
controller
fuel supply
supply device
container
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
Application number
JP2006132267A
Other languages
Japanese (ja)
Inventor
Nobuo Suzuki
信男 鈴木
Tetsuji Inoue
鉄治 井上
Shuji Yamamoto
修司 山本
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.)
Aisan Industry Co Ltd
Original Assignee
Aisan Industry Co Ltd
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 Aisan Industry Co Ltd filed Critical Aisan Industry Co Ltd
Priority to JP2006132267A priority Critical patent/JP2007303360A/en
Priority to US11/742,854 priority patent/US20070284006A1/en
Priority to DE200710021584 priority patent/DE102007021584A1/en
Priority to CNA2007101032245A priority patent/CN101070802A/en
Publication of JP2007303360A publication Critical patent/JP2007303360A/en
Pending legal-status Critical Current

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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
    • F02M37/10—Feeding by means of driven pumps electrically driven submerged in fuel, e.g. in reservoir
    • F02M37/106—Feeding by means of driven pumps electrically driven submerged in fuel, e.g. in reservoir the pump being installed in a sub-tank
    • 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
    • F02M37/22—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system
    • F02M37/32—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system characterised by filters or filter arrangements
    • F02M37/44—Filters structurally associated with pumps
    • 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
    • F02M37/22—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system
    • F02M37/32—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system characterised by filters or filter arrangements
    • F02M37/46—Filters structurally associated with pressure regulators
    • 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
    • F02M37/22—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system
    • F02M37/32—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system characterised by filters or filter arrangements
    • F02M37/50—Filters arranged in or on fuel tanks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
    • B60K15/03—Fuel tanks
    • B60K2015/03105—Fuel tanks with supplementary interior tanks inside the fuel tank
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
    • B60K15/03—Fuel tanks
    • B60K2015/03111—Swirl pots
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
    • B60K15/03—Fuel tanks
    • B60K2015/03328—Arrangements or special measures related to fuel tanks or fuel handling
    • B60K2015/03401—Arrangements or special measures related to fuel tanks or fuel handling for preventing electrostatic charges
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/85978—With pump

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
  • Fuel-Injection Apparatus (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To effectively reduce noise of a controller in a motor for a fuel pump at low cost. <P>SOLUTION: This fuel supply device is provided with a cover-shaped closing member 30 for closing an opening formed in an upper part of a fuel tank of a vehicle; a container part 40 provided in the closing member 30; and the controller 50 stored inside the container part 40 of the closing member 30 and driving the motor for the fuel pump inside the fuel tank. In a wall material 43 constituting the container part 40 of the closing member 30, a portion surrounding electrical components 55, 56c causing noise of the controller 50 is formed of a conductive material, and the wall material 43 formed of the conductive material is electrically connected to an earth terminal of the controller 50. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、車両の燃料タンク上部に形成された開口を塞ぐ蓋状の閉鎖部材と、その閉鎖部材に設けられた容器部と、前記閉鎖部材の容器部内に収納されており、前記燃料タンク内の燃料ポンプ用モータを駆動させるコントローラとを備える燃料供給装置に関する。   The present invention relates to a lid-like closing member that closes an opening formed in an upper portion of a fuel tank of a vehicle, a container portion provided on the closing member, and a container portion of the closing member, which is housed in the fuel tank. And a controller for driving the fuel pump motor.

これに関連する従来の燃料供給装置が特許文献１に記載されている。
前記燃料供給装置は、図５に示すように、燃料タンク１０１の上部開口１０２を塞ぐように固定された蓋フランジ１０４を備えている。蓋フランジ１０４は樹脂製で、燃料タンク１０１内に突出する筒状部１０５を備えており、その筒状部１０５の下端に燃料ポンプ１０７が収納されたポンプケース１０６が吊り下げられている。
また、蓋フランジ１０４の筒状部１０５には、燃料タンク１０１の外側で開口する凹部１０５ｈが形成されており、その凹部１０５ｈに燃料ポンプ１０７のモータを駆動させるコントローラ１０８が収納されている。 A related fuel supply apparatus related to this is described in Patent Document 1.
As shown in FIG. 5, the fuel supply device includes a lid flange 104 fixed so as to close the upper opening 102 of the fuel tank 101. The lid flange 104 is made of resin and includes a cylindrical portion 105 protruding into the fuel tank 101, and a pump case 106 in which the fuel pump 107 is accommodated is suspended at the lower end of the cylindrical portion 105.
The cylindrical portion 105 of the lid flange 104 is formed with a recess 105h that opens outside the fuel tank 101, and a controller 108 that drives the motor of the fuel pump 107 is accommodated in the recess 105h.

特開平８−１７７６６８号JP-A-8-177668

コントローラ１０８は、図５に示すように、ＥＣＵからの信号に基づいてスイッチング素子（図示省略）を動作させることでパルス電圧を発生させ、燃料ポンプ１０７のモータに印加される平均電圧を制御する。これにより、燃料ポンプ１０７の出力が調整されて、燃料噴射弁１１５を備えるデリバリパイプ１１６内の燃料圧力が一定に保持される。
このように、上記したコントローラ１０８はスイッチング素子を動作させてパルス電圧を発生させる構成のため、スイッチング素子の動作時にノイズが発生する。さらに、前記コントローラ１０８が収納される蓋フランジ１０４は樹脂製であるため、ノイズを吸収、抑制する機能はない。したがって、大掛かりなチョークコイルやコンデンサからなるフィルタ回路が必要となり、コストアップになる。 As shown in FIG. 5, the controller 108 generates a pulse voltage by operating a switching element (not shown) based on a signal from the ECU, and controls the average voltage applied to the motor of the fuel pump 107. Thereby, the output of the fuel pump 107 is adjusted, and the fuel pressure in the delivery pipe 116 including the fuel injection valve 115 is kept constant.
Thus, since the controller 108 described above is configured to generate the pulse voltage by operating the switching element, noise is generated during the operation of the switching element. Further, since the lid flange 104 in which the controller 108 is housed is made of resin, there is no function of absorbing and suppressing noise. Therefore, a large filter circuit including a choke coil and a capacitor is required, resulting in an increase in cost.

本発明は、上記問題点を解決するためになされたものであり、本発明の技術的課題は、燃料ポンプ用モータにおけるコントローラのノイズを低コストで効果的に低減させることである。   The present invention has been made to solve the above problems, and a technical problem of the present invention is to effectively reduce noise of a controller in a fuel pump motor at low cost.

上記した課題は、各請求項の発明によって解決される。
請求項１の発明は、車両の燃料タンク上部に形成された開口を塞ぐ蓋状の閉鎖部材と、その閉鎖部材に設けられた容器部と、前記閉鎖部材の容器部内に収納されており、前記燃料タンク内の燃料ポンプ用モータを駆動させるコントローラとを備える燃料供給装置であって、前記閉鎖部材の容器部を構成する壁材は、前記コントローラのノイズ発生源となる電気部品を囲む部分が導電性の材料で形成されており、さらに、前記導電性の材料で形成された前記壁材が前記コントローラのアース端子と電気的に接続されていることを特徴とする。 The above-described problems are solved by the inventions of the claims.
The invention of claim 1 is housed in a lid-like closure member that closes an opening formed in an upper portion of a fuel tank of a vehicle, a container portion provided in the closure member, and a container portion of the closure member, And a controller for driving a motor for a fuel pump in the fuel tank, wherein the wall material constituting the container portion of the closing member is electrically conductive at a portion surrounding an electrical component that is a noise generation source of the controller. The wall member formed of the conductive material is electrically connected to the ground terminal of the controller.

本発明によると、コントローラのノイズ発生源となる電気部品が蓋状部材における容器部の導電性の壁材によって電気的にシールドされている。このため、周囲の制御装置が前記コントローラのノイズの影響を受け難くなり、そのコントローラのノイズを抑制するフィルタ回路を大掛かりなものにする必要がなくなる。
ここで、コントローラの電気部品とは、抵抗、コンデンサ、コイル、及びスイッチング素子等のみならず電気回路基板の導体部分等も含むものとする。 According to the present invention, the electrical component that is a noise generation source of the controller is electrically shielded by the conductive wall material of the container portion in the lid-like member. For this reason, the surrounding control device is not easily affected by the noise of the controller, and it is not necessary to make a large filter circuit for suppressing the noise of the controller.
Here, the electrical components of the controller include not only resistors, capacitors, coils, and switching elements, but also conductor portions of the electrical circuit board.

請求項２の発明によると、コントローラは、スイッチング素子を動作させてパルス電圧を発生させ、燃料ポンプ用モータに印加される平均電圧を制御する構成であることを特徴とする。
請求項３の発明によると、壁材を構成する導電性の材料は、金属、又は導電性樹脂、又は導電層を備える樹脂であることを特徴とする。
請求項４の発明によると、導電性の材料で形成された壁材とコントローラのアース端子とは弾性力を受けて接合状態に保持されていることを特徴とする。
このため、導電性の壁材とコントローラのアース端子との間の電気的な接続が確実になり、振動等の影響で経時的に接続不良が起こり難くなる。 According to a second aspect of the present invention, the controller is configured to operate the switching element to generate a pulse voltage and to control an average voltage applied to the fuel pump motor.
According to the invention of claim 3, the conductive material constituting the wall material is a metal, a conductive resin, or a resin including a conductive layer.
According to a fourth aspect of the present invention, the wall material formed of a conductive material and the ground terminal of the controller are held in a joined state by receiving an elastic force.
For this reason, the electrical connection between the conductive wall material and the earth terminal of the controller is ensured, and the connection failure hardly occurs over time due to the influence of vibration or the like.

請求項５の発明によると、閉鎖部材の容器部は、燃料タンク内に突出して、燃料が接触可能に構成されていることを特徴とする。
このため、燃料により容器部を介してコントローラを冷却することができるようになる。 According to invention of Claim 5, the container part of the closing member protrudes in a fuel tank, and it is comprised so that a fuel can contact.
For this reason, the controller can be cooled by the fuel through the container portion.

本発明によると、周囲の制御装置がコントローラのノイズの影響を受け難くなり、そのコントローラのノイズを抑制するフィルタ回路を大掛かりなものにする必要がなくなる。   According to the present invention, the surrounding control device is hardly affected by the noise of the controller, and it is not necessary to make a filter circuit for suppressing the noise of the controller large.

（実施形態１）
以下、図１から図４に基づいて本発明の実施形態１に係る燃料供給装置の説明を行う。ここで、図１は本実施形態に係る燃料供給装置の全体縦断面図、図２は燃料供給装置の閉鎖部材の拡大縦断面図、図３は閉鎖部材の拡大平面図である。また、図４は燃料供給装置のコントローラの配線ブロック図である。 (Embodiment 1)
Hereinafter, the fuel supply apparatus according to Embodiment 1 of the present invention will be described with reference to FIGS. 1 to 4. Here, FIG. 1 is an overall longitudinal sectional view of the fuel supply apparatus according to this embodiment, FIG. 2 is an enlarged longitudinal sectional view of a closing member of the fuel supply apparatus, and FIG. 3 is an enlarged plan view of the closing member. FIG. 4 is a wiring block diagram of the controller of the fuel supply apparatus.

＜燃料供給装置１０の概要について＞
燃料供給装置１０は、燃料タンク１１内の燃料をエンジンのインジェクタ（図示省略）まで所定圧力で圧送する装置である。燃料供給装置１０は、図１に示すように、燃料タンク１１内に設置されたポンプ部分２０と、燃料タンク１１の上部開口１３を塞ぐ蓋状の閉鎖部材３０（以下、蓋フランジ部３０という）とから構成されている。
ポンプ部分２０は、燃料タンク１１内の底部に設置された上部開放型容器のリザーバカップ２１と、そのリザーバカップ２１内に収納された燃料ポンプ２３、吸入フィルタ２４ｆ、高圧フィルタ２５、及び圧力レギュレータ２６とを備えている。燃料ポンプ２３は、燃料を吸入し、かつ加圧して吐出するインペラ式のポンプ部と、そのポンプ部を駆動させるモータ部とを備えるモータ一体型ポンプである。 <About the outline of the fuel supply device 10>
The fuel supply device 10 is a device that pumps the fuel in the fuel tank 11 at a predetermined pressure to an injector (not shown) of the engine. As shown in FIG. 1, the fuel supply device 10 includes a pump portion 20 installed in the fuel tank 11 and a lid-like closing member 30 that closes the upper opening 13 of the fuel tank 11 (hereinafter referred to as a lid flange portion 30). It consists of and.
The pump portion 20 includes a reservoir cup 21 of an upper open type container installed at the bottom of the fuel tank 11, a fuel pump 23 housed in the reservoir cup 21, a suction filter 24 f, a high pressure filter 25, and a pressure regulator 26. And. The fuel pump 23 is a motor-integrated pump including an impeller-type pump unit that sucks in fuel and pressurizes and discharges the fuel, and a motor unit that drives the pump unit.

燃料ポンプ２３の燃料吸引口２３ｅには、リザーバカップ２１内の燃料を濾過する吸入フィルタ２４ｆが取付けられている。燃料吸引口２３ｅから吸入フィルタ２４ｆを介して燃料ポンプ２３内に吸入された燃料はインペラ（図示省略）の回転により流路溝（図示省略）内で加圧され、モータ部内に吐出される。そして、モータ部内に吐出された燃料はそのモータ部内を冷却するとともに、回転部位の潤滑及び洗浄を行い、上端に設けられたポンプ吐出口２３ｕから吐出される。ポンプ吐出口２３ｕから吐出された燃料は出側パイプ２４によって高圧フィルタ２５まで導かれ、その高圧フィルタ２５によって燃料中のモータ異物等が捕捉される。高圧フィルタ２５を通過した燃料は、圧力レギュレータ２６によって所定圧力に調整された後、図示省略するタンク外燃料供給管、デリバリパイプを介して各々のインジェクタに導かれ、各インジェクタからエンジンの燃焼室（図示省略）内に噴射される。   A suction filter 24 f that filters the fuel in the reservoir cup 21 is attached to the fuel suction port 23 e of the fuel pump 23. The fuel sucked into the fuel pump 23 from the fuel suction port 23e via the suction filter 24f is pressurized in the flow channel groove (not shown) by the rotation of the impeller (not shown) and discharged into the motor unit. The fuel discharged into the motor unit cools the motor unit, lubricates and cleans the rotating part, and is discharged from a pump discharge port 23u provided at the upper end. The fuel discharged from the pump discharge port 23u is guided to the high-pressure filter 25 by the outlet pipe 24, and the motor foreign matter or the like in the fuel is captured by the high-pressure filter 25. The fuel that has passed through the high-pressure filter 25 is adjusted to a predetermined pressure by the pressure regulator 26, and is then guided to each injector via a tank external fuel supply pipe and a delivery pipe (not shown), and from each injector to the combustion chamber ( (Not shown).

＜蓋フランジ部３０について＞
蓋フランジ部３０は樹脂を主体にして形成されており、燃料タンク１１の上部開口１３を塞ぐ蓋状のフランジ本体部３２と、燃料ポンプ２３のモータ駆動用のコントローラ５０が収納される容器部４０とから構成されている。フランジ本体部３２は、図３に示すように、円盤状に形成されており、そのフランジ本体部３２の下面に燃料タンク１１の上部開口１３に嵌め込まれる円筒状の位置決め突起３２ｔが形成されている（図１参照）。さらに、フランジ本体部３２の位置決め突起３２ｔの周縁には、燃料タンク１１の上部開口１３の周縁を表側から押さえる周縁押さえ部３２ｐが形成されている。
容器部４０は、図３に示すように、蓋フランジ部３０の周縁部寄りに設けられており、フランジ本体部３２を表裏方向に貫通するように形成されている（図２等参照）。 <About lid flange 30>
The lid flange portion 30 is formed mainly of resin, and a container portion 40 in which a lid-like flange main body portion 32 that closes the upper opening 13 of the fuel tank 11 and a controller 50 for driving the motor of the fuel pump 23 is accommodated. It consists of and. As shown in FIG. 3, the flange main body 32 is formed in a disk shape, and a cylindrical positioning protrusion 32 t that is fitted into the upper opening 13 of the fuel tank 11 is formed on the lower surface of the flange main body 32. (See FIG. 1). Further, a peripheral edge pressing portion 32p for pressing the peripheral edge of the upper opening 13 of the fuel tank 11 from the front side is formed on the peripheral edge of the positioning projection 32t of the flange main body part 32.
As shown in FIG. 3, the container part 40 is provided near the peripheral part of the lid flange part 30, and is formed so as to penetrate the flange body part 32 in the front and back direction (see FIG. 2 and the like).

容器部４０は、蓋付の有低筒形容器であり、フランジ本体部３２の表側に位置する表側突出部４１と、そのフランジ本体部３２の裏側に位置するタンク内突出部４３とから構成されている。そして、容器部４０の表側突出部４１がフランジ本体部３２と樹脂により一体成形されている。さらに、表側突出部４１の外側面には、後記するコントローラ５０の電気コネクタ５２が設けられている。また、容器部４０の表側突出部４１の上端には、その容器部４０内にコントローラ５０を収納するための開口４１ｋが形成されており、その開口４１ｋが樹脂カバー４４によって塞がれるようになっている。
容器部４０のタンク内突出部４３は、導電性の金属により形成された有低筒形のハウジングであり、そのタンク内突出部４３の上端外周にフランジ状の拡開部４３ｆが形成されている。タンク内突出部４３の拡開部４３ｆは、フランジ本体部３２及び容器部４０の表側突出部４１を成形する型内にインサートできるように構成されている。そして、前記フランジ本体部３２と容器部４０の表側突出部４１とを型により成形する際に、タンク内突出部４３の拡開部４３ｆがその表側突出部４１の下端縁に埋め込まれる。即ち、フランジ本体部３２と表側突出部４１とを成形する際に、タンク内突出部４３が表側突出部４１と一体化されて、有低筒形の容器部４０が形成される。 The container part 40 is a low-capacity cylindrical container with a lid, and is composed of a front side protruding part 41 positioned on the front side of the flange main body part 32 and an in-tank protruding part 43 positioned on the back side of the flange main body part 32. ing. And the front side protrusion part 41 of the container part 40 is integrally molded with the flange main-body part 32 and resin. Further, an electrical connector 52 of the controller 50 described later is provided on the outer surface of the front side protruding portion 41. Further, an opening 41k for accommodating the controller 50 in the container portion 40 is formed at the upper end of the front side protruding portion 41 of the container portion 40, and the opening 41k is blocked by the resin cover 44. ing.
The in-tank protruding portion 43 of the container portion 40 is a low-cylinder-shaped housing formed of a conductive metal, and a flange-shaped widened portion 43 f is formed on the outer periphery of the upper end of the in-tank protruding portion 43. . The expansion part 43f of the in-tank protrusion 43 is configured so that it can be inserted into a mold for forming the flange main body part 32 and the front side protrusion 41 of the container part 40. And when the said flange main-body part 32 and the front side protrusion part 41 of the container part 40 are shape | molded with a type | mold, the expansion part 43f of the protrusion part 43 in a tank is embedded at the lower end edge of the front side protrusion part 41. That is, when the flange main body 32 and the front side protruding portion 41 are formed, the in-tank protruding portion 43 is integrated with the front side protruding portion 41 to form the low-cylindrical container portion 40.

＜コントローラ５０について＞
コントローラ５０は、図４に示すように、容器部４０の電気コネクタ５２がエンジンコントロールユニットＥＣＵ（以下、ＥＣＵという）の電気コネクタＣＮに接続されることにより、前記ＥＣＵと電気的に接続される。コントローラ５０は、ＥＣＵからの信号Ｓｇに基づいてＩＣチップ５５に設けられたスイッチング素子（図示省略）を動作させる。そして、スイッチング素子の動作により、燃料ポンプ２３のモータＭに印加される電圧（バッテリ電圧Ｖｂ）がオンオフしてパルス状に変化する。したがって、ＥＣＵからの信号Ｓｇに基づいてパルス幅等を調節することで、燃料ポンプ２３のモータＭに印加される平均電圧Ｖａｖが変化し、モータＭの出力が制御される。これによって、燃料ポンプ２３の出力が調整されて、燃料噴射弁を備えるデリバリパイプ内の燃料圧力が一定に保持されるようになる。ここで、図４における電圧Ｖｂは、ＩＣチップ５５の前記スイッチング素子に加えられるバッテリ電圧（電源電圧）、及びＥＣＵの電源電圧を表している。 <About the controller 50>
As shown in FIG. 4, the controller 50 is electrically connected to the ECU by connecting an electrical connector 52 of the container unit 40 to an electrical connector CN of an engine control unit ECU (hereinafter referred to as ECU). The controller 50 operates a switching element (not shown) provided in the IC chip 55 based on a signal Sg from the ECU. Then, by the operation of the switching element, the voltage (battery voltage Vb) applied to the motor M of the fuel pump 23 is turned on and off and changes in a pulse shape. Therefore, by adjusting the pulse width and the like based on the signal Sg from the ECU, the average voltage Vav applied to the motor M of the fuel pump 23 changes, and the output of the motor M is controlled. Thereby, the output of the fuel pump 23 is adjusted, and the fuel pressure in the delivery pipe having the fuel injection valve is kept constant. Here, the voltage Vb in FIG. 4 represents the battery voltage (power supply voltage) applied to the switching element of the IC chip 55 and the power supply voltage of the ECU.

このように、コントローラ５０はスイッチング素子を動作させてパルス電圧を発生させる構成のため、スイッチング素子の動作時にノイズが発生する。このため、コントローラ５０の電源線Ｐには、ＩＣチップ５５で発生したノイズを吸収して、ＥＣＵ側への流出を抑制するためのフィルタ回路５６が設けられている。フィルタ回路５６はチョークコイル５６ｔとコンデンサ５６ｃとから構成されており、ＩＣチップ５５と共にコントローラ５０の回路基板５７に取付けられている（図２参照）。なお、図中の符号Ｅは、回路基板５７のアース端子を表している。
さらに、ＩＣチップ５５には、前記モータＭの回転速度を計測する手段が設けられており、そのモータＭの回転速度信号Ｆがコントローラ５０からＥＣＵにフィードバックされるようになっている。 Thus, since the controller 50 operates the switching element to generate the pulse voltage, noise is generated during the operation of the switching element. For this reason, the power supply line P of the controller 50 is provided with a filter circuit 56 for absorbing noise generated in the IC chip 55 and suppressing outflow to the ECU side. The filter circuit 56 includes a choke coil 56t and a capacitor 56c, and is attached to the circuit board 57 of the controller 50 together with the IC chip 55 (see FIG. 2). In addition, the code | symbol E in a figure represents the ground terminal of the circuit board 57. FIG.
Further, the IC chip 55 is provided with means for measuring the rotational speed of the motor M, and the rotational speed signal F of the motor M is fed back from the controller 50 to the ECU.

＜コントローラ５０の取付けについて＞
コントローラ５０は、図２等に示すように、回路基板５７が立てられた状態で、蓋フランジ部３０の容器部４０に収納される。コントローラ５０は、回路基板５７に取付けられたＩＣチップ５５とコンデンサ５６ｃ、及びチョークコイル５６ｔの一部が導電性の金属により形成された容器部４０のタンク内突出部４３に収納されるようになっている。さらに、回路基板５７のアース端子Ｅに接続された導電性の板バネ５７ｂが弾性変形した状態で容器部４０のタンク内突出部４３の内壁面に面接触させられている。即ち、回路基板５７のアース端子Ｅと容器部４０のタンク内突出部４３とが板バネ５７ｂを介して電気的に接続されている。
さらに、回路基板５７とタンク内突出部４３の内壁面との間には、熱伝導部材（図示省略）が配置されている。これにより、ＩＣチップ５５のスイッチング素子の発熱が熱伝導部材を介して容器部４０のタンク内突出部４３に逃げ易くなる。このため、タンク内突出部４３の接触する燃料により間接的にＩＣチップ５５が冷却される。 <Installation of controller 50>
As shown in FIG. 2 and the like, the controller 50 is accommodated in the container portion 40 of the lid flange portion 30 in a state where the circuit board 57 is erected. In the controller 50, the IC chip 55 and the capacitor 56c attached to the circuit board 57, and a part of the choke coil 56t are accommodated in the in-tank protrusion 43 of the container 40 formed of conductive metal. ing. Further, the conductive leaf spring 57 b connected to the ground terminal E of the circuit board 57 is brought into surface contact with the inner wall surface of the in-tank protruding portion 43 of the container portion 40 while being elastically deformed. That is, the ground terminal E of the circuit board 57 and the in-tank protrusion 43 of the container 40 are electrically connected via the leaf spring 57b.
Further, a heat conducting member (not shown) is disposed between the circuit board 57 and the inner wall surface of the in-tank protrusion 43. As a result, the heat generated by the switching element of the IC chip 55 can easily escape to the in-tank protrusion 43 of the container 40 via the heat conducting member. For this reason, the IC chip 55 is indirectly cooled by the fuel that the in-tank protrusion 43 contacts.

＜本実施形態に係る燃料供給装置１０の長所について＞
本実施形態に係る燃料供給装置１０によると、コントローラ５０のノイズ発生源となる電気部品、即ち、ＩＣチップ５５のスイッチング素子、及びＩＣチップ５５の近傍に位置するコンデンサ５６ｃが導電性の壁材（タンク内突出部４３の壁材）によって電気的にシールドされている。このため、ＥＣＵ等の制御装置が外部からコントローラ５０のノイズの影響を受け難くなり、そのコントローラ５０のノイズを吸収、抑制するフィルタ回路５６を大掛かりなものにする必要がなくなる。したがって、前記コントローラ５０のノイズを低コストで効果的に低減させることができる。
また、導電性の壁材（タンク内突出部４３の壁材）とコントローラ５０のアース端子Ｅとは板バネ５７ｂを介して接合状態に保持されているため、前記導電性の壁材とコントローラ５０のアース端子Ｅとの接続が確実になる。このため、振動等の影響で経時的に接続不良が起こり難くなる。
また、容器部４０のタンク内突出部４３は燃料が接触可能に構成されているため、燃料によりそのタンク内突出部４３を介してコントローラ５０を冷却できるようになる。 <Advantages of Fuel Supply Device 10 According to the Present Embodiment>
According to the fuel supply device 10 according to the present embodiment, the electrical components that are the noise generation source of the controller 50, that is, the switching element of the IC chip 55 and the capacitor 56c located in the vicinity of the IC chip 55 are electrically conductive wall materials ( It is electrically shielded by the wall material of the protruding portion 43 in the tank. For this reason, the control device such as the ECU is hardly affected by the noise of the controller 50 from the outside, and the filter circuit 56 that absorbs and suppresses the noise of the controller 50 does not need to be large. Therefore, the noise of the controller 50 can be effectively reduced at a low cost.
Further, since the conductive wall material (the wall material of the protruding portion 43 in the tank) and the ground terminal E of the controller 50 are held in a joined state via the leaf spring 57b, the conductive wall material and the controller 50 are connected. The connection to the ground terminal E is ensured. For this reason, poor connection is less likely to occur over time due to the influence of vibration or the like.
Further, since the in-tank protruding portion 43 of the container portion 40 is configured to be able to contact the fuel, the controller 50 can be cooled by the fuel through the in-tank protruding portion 43.

＜変更例＞
本発明は上記した実施形態に限定されるものではなく、本発明の要旨を逸脱しない範囲における変更が可能である。例えば、本実施形態では、容器部４０の表側突出部４１を樹脂製とし、タンク内突出部４３を金属製とする例を示したが、表側突出部４１のハウジング部分を金属製とすることも可能である。
また、タンク内突出部４３等に導電性の金属を使用する代わりに、樹脂に金属紛を混ぜて導電性を持たせたものを使用することも可能である。さらに、タンク内突出部４３を樹脂で成形し、その内壁面に導電性の層を被覆することも可能である。
また、燃料タンク１１の上部開口１３を塞ぐ蓋フランジ部３０とポンプ部分２０とが別体式の燃料供給装置１０を例示したが、蓋フランジ部３０とポンプ部分２０とを一体式にすることも可能である。 <Example of change>
The present invention is not limited to the above-described embodiment, and modifications can be made without departing from the gist of the present invention. For example, in the present embodiment, the front side protruding portion 41 of the container portion 40 is made of resin and the in-tank protruding portion 43 is made of metal. However, the housing portion of the front side protruding portion 41 may be made of metal. Is possible.
Further, instead of using a conductive metal for the in-tank projecting portion 43 and the like, it is also possible to use a resin mixed with metal powder to have conductivity. Further, it is also possible to form the in-tank protrusion 43 with resin and coat the inner wall surface with a conductive layer.
In addition, although the fuel supply device 10 in which the lid flange portion 30 and the pump portion 20 that close the upper opening 13 of the fuel tank 11 are separated is illustrated, the lid flange portion 30 and the pump portion 20 may be integrated. It is.

本発明の実施形態１に係る燃料供給装置の全体縦断面図である。1 is an overall longitudinal sectional view of a fuel supply device according to Embodiment 1 of the present invention. 燃料供給装置の閉鎖部材（蓋フランジ部）の拡大縦断面図である。It is an enlarged vertical sectional view of the closing member (lid flange part) of the fuel supply device. 閉鎖部材（蓋フランジ部）の拡大平面図である。It is an enlarged plan view of a closing member (lid flange part). 燃料供給装置のコントローラの配線ブロック図である。It is a wiring block diagram of the controller of a fuel supply apparatus. 従来の燃料供給装置の全体縦断面図である。It is a whole longitudinal cross-sectional view of the conventional fuel supply apparatus.

符号の説明Explanation of symbols

１１ 燃料タンク
１３ 上部開口（開口）
３０ 蓋フランジ部（閉鎖部材）
４０ 容器部
４１ 表側突出部
４３ タンク内突出部（電気部品を囲む部分）
５０ コントローラ
５５ ＩＣチップ（ノイズ発生源となる電気部品）
５７ｂ 板バネ
Ｅ アース端子
Ｍ モータ
11 Fuel tank 13 Upper opening (opening)
30 Lid flange (closing member)
40 Container part 41 Front side protrusion part 43 In-tank protrusion part (portion surrounding electric parts)
50 Controller 55 IC chip (Electrical components that are noise sources)
57b Leaf spring E Ground terminal M Motor

Claims (5)

車両の燃料タンク上部に形成された開口を塞ぐ蓋状の閉鎖部材と、その閉鎖部材に設けられた容器部と、前記閉鎖部材の容器部内に収納されており、前記燃料タンク内の燃料ポンプ用モータを駆動させるコントローラとを備える燃料供給装置であって、
前記閉鎖部材の容器部を構成する壁材は、前記コントローラのノイズ発生源となる電気部品を囲む部分が導電性の材料で形成されており、
さらに、前記導電性の材料で形成された前記壁材が前記コントローラのアース端子と電気的に接続されていることを特徴とする燃料供給装置。 A lid-like closure member that closes an opening formed in the upper part of the fuel tank of the vehicle, a container part provided on the closure member, and a container part of the closure member that is housed in the container for the fuel pump in the fuel tank A fuel supply device comprising a controller for driving a motor,
The wall material constituting the container portion of the closing member is formed of a conductive material in a portion surrounding an electrical component that is a noise generation source of the controller,
Further, the fuel supply apparatus is characterized in that the wall member made of the conductive material is electrically connected to a ground terminal of the controller. 請求項１に記載された燃料供給装置であって、
コントローラは、スイッチング素子を動作させてパルス電圧を発生させ、燃料ポンプ用モータに印加される平均電圧を制御する構成であることを特徴とする燃料供給装置。 The fuel supply device according to claim 1,
The controller is configured to operate a switching element to generate a pulse voltage and to control an average voltage applied to a fuel pump motor. 請求項１、又は請求項２のいずれかに記載された燃料供給装置であって、
壁材を構成する導電性の材料は、金属、又は導電性樹脂、又は導電層を備える樹脂であることを特徴とする燃料供給装置。 A fuel supply device according to claim 1 or 2, wherein
The fuel supply device, wherein the conductive material constituting the wall material is a metal, a conductive resin, or a resin including a conductive layer. 請求項１〜請求項３のいずれかに記載された燃料供給装置であって、
導電性の材料で形成された壁材とコントローラのアース端子とは、弾性力を受けて接合状態に保持されていることを特徴とする燃料供給装置。 The fuel supply device according to any one of claims 1 to 3,
A fuel supply apparatus, wherein a wall member made of a conductive material and a ground terminal of a controller are held in a joined state by receiving an elastic force. 請求項１〜請求項４のいずれかに記載された燃料供給装置であって、
閉鎖部材の容器部は、燃料タンク内に突出して、燃料が接触可能に構成されていることを特徴とする燃料供給装置。
A fuel supply device according to any one of claims 1 to 4,
The fuel supply device, wherein the container portion of the closing member protrudes into the fuel tank so that the fuel can come into contact therewith.
JP2006132267A 2006-05-11 2006-05-11 Fuel supply device Pending JP2007303360A (en)

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JP2006132267A JP2007303360A (en) 2006-05-11 2006-05-11 Fuel supply device
US11/742,854 US20070284006A1 (en) 2006-05-11 2007-05-01 Fuel supply systems
DE200710021584 DE102007021584A1 (en) 2006-05-11 2007-05-08 Fuel supply system for supplying fuel of vehicle fuel tank, has fuel pump arranged inside fuel tank, and cover, which locks opening, is formed in upper section of fuel tank, and control device controls operation of motor
CNA2007101032245A CN101070802A (en) 2006-05-11 2007-05-10 Fuel supply system

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