JP4638364B2 - Subsidiary fuel supply system - Google Patents

Subsidiary fuel supply system Download PDF

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JP4638364B2
JP4638364B2 JP2006050244A JP2006050244A JP4638364B2 JP 4638364 B2 JP4638364 B2 JP 4638364B2 JP 2006050244 A JP2006050244 A JP 2006050244A JP 2006050244 A JP2006050244 A JP 2006050244A JP 4638364 B2 JP4638364 B2 JP 4638364B2
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fuel
pump
insertion hole
discharge pipe
flow path
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JP2007224882A (en
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光之 中川
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Keihin Corp
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Keihin Corp
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/10Internal combustion engine [ICE] based vehicles
    • Y02T10/12Improving ICE efficiencies

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Description

本発明は、蓋部材に立設されたステーに燃料ポンプが取着され、燃料タンクに穿設された開口部を介して燃料ポンプが燃料タンク内に挿入配置されるとともに前記開口部が蓋部材によって閉塞され、燃料タンク内の燃料が燃料ポンプによって吸入されて昇圧され、この昇圧された燃料が燃料噴射弁を介して機関に噴射供給される燃料噴射装置に用いられる燃料供給装置に関し、そのうち特に開口部が燃料タンクの下方の底部に穿設され、該下方開口部より燃料ポンプが燃料タンク内に挿入配置されるとともに下方開口部が蓋部材によって閉塞される下付け用燃料供給装置に関する。   According to the present invention, a fuel pump is attached to a stay standing on a lid member, and the fuel pump is inserted into the fuel tank through an opening formed in the fuel tank, and the opening is a lid member. The fuel supply device used in the fuel injection device in which the fuel in the fuel tank is sucked by the fuel pump and boosted, and this boosted fuel is injected and supplied to the engine via the fuel injection valve, The present invention relates to a fuel supply device for attachment, wherein an opening is formed in a bottom portion below a fuel tank, a fuel pump is inserted into the fuel tank from the lower opening, and the lower opening is closed by a lid member.

かかる下付け用燃料供給装置の一例は特開平11−93794号公報に示される。
これには燃料タンクの下方の底部に下方開口部が穿設され、下方開口部を閉塞する平板状の蓋部材にステーが立設される。
又、ステーには、蓋部材に対して斜め上方に向かって傾斜して燃料ポンプが取着され、燃料ポンプの上端より上方に突出するポンプ吐出路が蓋部材に立設された吐出管に燃料吐出配管をもって流路接続され、これによって燃料供給装置が形成される。
そして、かかる燃料供給装置は、燃料ポンプ、燃料吐出配管、フィルター等の構成が燃料タンクの下方開口部を介して燃料タンク内に挿入配置され、かかる状態において下方開口部が蓋部材によって閉塞される。
而して、燃料タンク内の燃料は、燃料タンク内に配置される燃料ポンプによって吸入されて昇圧され、この昇圧された燃料が燃料吐出配管、吐出管を介して外部に向けて供給される。
又、燃料ポンプによって昇圧された燃料圧力を所定の圧力に調圧するプレッシャーレギュレターは、スロットルボデーに取着され、プレッシャーレギュレターの余剰燃料はリターン燃料配管を介して燃料タンク内へ戻される。
特開平11−93794号公報
An example of such a subordinate fuel supply apparatus is disclosed in Japanese Patent Application Laid-Open No. 11-93794.
For this purpose, a lower opening is formed at the bottom of the fuel tank, and a stay is erected on a flat lid member that closes the lower opening.
In addition, a fuel pump is attached to the stay so as to be inclined obliquely upward with respect to the lid member, and a pump discharge passage protruding upward from the upper end of the fuel pump is provided in a discharge pipe provided upright on the lid member. The discharge pipe is connected to the flow path, thereby forming the fuel supply device.
In such a fuel supply apparatus, components such as a fuel pump, a fuel discharge pipe, and a filter are inserted and disposed in the fuel tank via the lower opening of the fuel tank, and in this state, the lower opening is closed by the lid member. .
Thus, the fuel in the fuel tank is sucked and boosted by the fuel pump disposed in the fuel tank, and the boosted fuel is supplied to the outside through the fuel discharge pipe and the discharge pipe.
A pressure regulator that regulates the fuel pressure boosted by the fuel pump to a predetermined pressure is attached to the throttle body, and surplus fuel in the pressure regulator is returned to the fuel tank through the return fuel pipe.
JP-A-11-93794

かかる下付け用燃料供給装置によると、ステーに取着される燃料ポンプは、燃料タンク内において斜め上方に向けて大きく突出して配置される。
これによると、自動車に搭載される箱型の燃料タンクに比較して、車輌のフレームへの搭載上、外観デザイン上より深さの浅い扁平形状の燃料タンクが採用される自動二輪車の燃料タンク内への燃料ポンプの配置の自由度が大きく阻害される。
ここで燃料タンクの形状を変更することが考慮されるが、これによるとタンクの金型費用が大きく上昇するとともに自動二輪車のデザインが大きく変わることになり好ましいものでない。
又、燃料ポンプのポンプ吐出路もまた大きく上方に向かって突出するもので、下方の蓋部材に立設された吐出管とは長い燃料吐出配管をもって連絡される。
これによると、燃料吐出配管内に燃料ポンプから流入するベーパーの排出性が劣る。又ポンプ吐出路、吐出管と燃料吐出配管の接続作業性が劣る。又、燃料タンクの下方開口部より燃料ポンプを燃料タンク内へ挿入配置する際、下方開口部と燃料吐出配管とが干渉する恐れがあり挿入作業性が劣る。
又、機関の運転時において、燃料吐出配管は機関、車輌の振動を受けて振れが生じることがあり、燃料吐出配管をバンド等によってステーに取りつける必要がある。
更に、プレッシャーレギュレターを燃料タンク内に配置する際、ステー等の固定部材に対して格別の取着手段を用意する必要がある。
According to the subordinate fuel supply device, the fuel pump attached to the stay is disposed so as to protrude greatly upward in the fuel tank.
According to this, in the fuel tank of a motorcycle, a flat fuel tank with a shallower depth than the box-type fuel tank mounted on an automobile is adopted. The degree of freedom in the arrangement of the fuel pump is greatly hindered.
Here, it is considered that the shape of the fuel tank is changed. However, this greatly increases the cost of the mold of the tank and greatly changes the design of the motorcycle, which is not preferable.
Further, the pump discharge path of the fuel pump also protrudes greatly upward, and is connected to the discharge pipe standing on the lower lid member through a long fuel discharge pipe.
According to this, the discharge property of the vapor flowing from the fuel pump into the fuel discharge pipe is inferior. Also, the workability of connecting the pump discharge passage, discharge pipe and fuel discharge pipe is poor. Further, when the fuel pump is inserted into the fuel tank from the lower opening of the fuel tank, the lower opening and the fuel discharge pipe may interfere with each other, and the insertion workability is poor.
Further, during the operation of the engine, the fuel discharge pipe may be shaken due to vibrations of the engine and the vehicle, and it is necessary to attach the fuel discharge pipe to the stay with a band or the like.
Furthermore, when the pressure regulator is disposed in the fuel tank, it is necessary to prepare special attachment means for the fixing member such as the stay.

本発明になる下付け用燃料供給装置は、前記課題に鑑み成されたもので、自動二輪車の如き、扁平形状をなす燃料タンクへの装着性のすぐれた前記装置を提供すること。及びプレッシャーレギュレターを含む燃料吐出路系の構造を小型で且つ安価に製作すること。を主たる目的とする。   The fuel supply device for subordinates according to the present invention is made in view of the above-mentioned problems, and provides the above-described device that is easily mounted on a flat fuel tank, such as a motorcycle. And the structure of the fuel discharge path system including the pressure regulator is made small and inexpensive. Is the main purpose.

本発明は、上記目的を達成する為に、燃料タンクの底部に穿設された下方開口部を閉塞する平板状の蓋部材にステーが立設され、該ステーに取着された燃料ポンプによって燃料タンク内の燃料が吸入されて昇圧され、この燃料が蓋部材に立設された吐出管より外部に向けて供給される下付け用燃料供給装置において、燃料ポンプを、その長手軸心線が蓋部材と略平行になるように配置するとともに、この燃料ポンプの一端部に前記長手軸心線に沿って突設されるポンプ吐出路を、蓋部材の上面から起立する前記吐出管の上方突出部の近傍に配置し、一端には前記ポンプ吐出路が挿入配置されるポンプ吐出路挿入孔を、他端には前記吐出管の上方突出部が挿入配置される吐出管挿入孔をそれぞれ開口させた流路アダプターに、蓋部材にネジで固着される取付け鍔部を一体に形成し、また前記流路アダプターには、前記ポンプ吐出路挿入孔および吐出管挿入孔間を連通する流路と、この流路に連通するとともに前記吐出管挿入孔に平行して流路アダプターの前記他端部に開口するプレッシャーレギュレター挿入孔とを形成し、このプレッシャーレギュレター挿入孔にプレッシャーレギュレターを装着したことを第1の特徴とする。 This onset bright, in order to achieve the above object, the stay is erected on a flat cover member for closing the lower opening bored in the bottom of the fuel tank, the attached fuel pump to the stay In a subordinate fuel supply apparatus in which fuel in a fuel tank is sucked and pressurized, and this fuel is supplied to the outside from a discharge pipe provided upright on a lid member, the fuel pump has a longitudinal axis line A pump discharge passage which is arranged so as to be substantially parallel to the lid member and projects along the longitudinal axis at one end of the fuel pump protrudes upward from the discharge pipe standing from the upper surface of the lid member. A pump discharge passage insertion hole into which the pump discharge passage is inserted and arranged at one end, and a discharge pipe insertion hole into which the upper projecting portion of the discharge pipe is inserted into the other end. Secure the cover adapter to the lid with a screw. And the flow path adapter is connected to the pump discharge path insertion hole and the discharge pipe insertion hole, and the discharge pipe insertion hole is connected to the flow path. A pressure regulator insertion hole that opens in the other end portion of the flow path adapter is formed in parallel with the pressure regulator, and the pressure regulator is attached to the pressure regulator insertion hole .

又、本発明は、前記第1の特徴に加え、前記流路アダプターを合成樹脂材料によって射出成型するとともに燃料吐出流路を含むポンプ吐出路挿入孔、吐出管挿入孔、プレッシャーレギュレター挿入孔を同時に鋳抜き形成したことを第2の特徴とする。   According to the present invention, in addition to the first feature, a pump discharge passage insertion hole, a discharge pipe insertion hole, and a pressure regulator insertion hole including the fuel discharge passage are simultaneously formed by injection molding the flow passage adapter with a synthetic resin material. The second feature is that it is formed by casting.

本発明の第1の特徴によると、ステーに取着された燃料ポンプは、平板状の蓋部材と略平行に配置されたので、燃料ポンプが蓋部材を介して燃料タンク内へ挿入配置された際、燃料ポンプは燃料タンクの底部近傍に配置され、燃料タンク内の上方へ大きく突出して配置されることがない。
以上によると、扁平形の燃料タンクが採用される自動二輪車に対して燃料ポンプの配置の自由度を大きく向上でき、従来の扁平形の燃料タンクをそのまま使用できる。
又、単一の流路アダプターの燃料吐出流路に向けて、燃料ポンプのポンプ吐出路、蓋部材に立設された吐出管、及びプレッシャーレギュレターが挿入配置されたので、極めて小型で安価な燃料吐出系を形成することができ、このとき剛性の高いポンプ吐出路挿入孔、吐出管挿入孔、プレッシャーレギュレター挿入孔、にポンプ吐出路、吐出管、プレッシャーレギュレターが挿入されるので、その接続作業性を良好に行なうことができる。
又、燃料ポンプのポンプ吐出路が吐出管の近傍に配置されたので、ポンプ吐出路と吐出管とを連絡する燃料吐出流路の流路長さを短く形成でき、これによって燃料ポンプに生起するベーパーを遅滞なく吐出管より良好に排出できる。
又、流路アダプターに、燃料吐出流路を含む、ポンプ吐出路挿入孔、吐出管挿入孔、プレッシャーレギュレター挿入孔を形成したので、燃料タンクの下方開口部より燃料ポンプを燃料タンク内へ挿入する際、流路アダプターがゴム配管のように振れることがなく挿入作業性を向上できる。
更に、プレッシャーレギュレターを流路アダプターのプレシャーレギュレター挿入孔内に挿入配置したことにより、プレッシャーレギュレター専用の取付け部材が不要となったものである。
更に又、燃料ポンプのポンプ吐出路が蓋部材に螺着固定された流路アダプターのポンプ吐出路挿入孔内に挿入配置されたので、燃料ポンプの外周をバンドによってステーに取着した際、より強固に且つ確実に燃料ポンプをステーに取着することができる。
According to the first feature of the present invention, since the fuel pump attached to the stay is arranged substantially parallel to the flat lid member, the fuel pump is inserted into the fuel tank via the lid member. In this case, the fuel pump is disposed in the vicinity of the bottom of the fuel tank, and is not disposed so as to protrude greatly upward in the fuel tank.
According to the above, the degree of freedom of the arrangement of the fuel pump can be greatly improved with respect to the motorcycle in which the flat fuel tank is adopted, and the conventional flat fuel tank can be used as it is.
In addition, the fuel discharge path of the fuel pump, the discharge pipe erected on the lid member, and the pressure regulator are inserted and arranged toward the fuel flow path of the single flow path adapter. A discharge system can be formed. At this time, the pump discharge path, discharge pipe, and pressure regulator are inserted into the highly rigid pump discharge path insertion hole, discharge pipe insertion hole, and pressure regulator insertion hole. Can be performed satisfactorily.
In addition, since the pump discharge path of the fuel pump is disposed in the vicinity of the discharge pipe, the length of the fuel discharge flow path connecting the pump discharge path and the discharge pipe can be shortened, thereby causing the fuel pump to occur. Vapor can be discharged better than the discharge pipe without delay.
In addition, since the pump discharge path insertion hole, discharge pipe insertion hole, and pressure regulator insertion hole including the fuel discharge flow path are formed in the flow path adapter, the fuel pump is inserted into the fuel tank from the lower opening of the fuel tank. At this time, the flow path adapter does not shake like rubber piping, and the insertion workability can be improved.
Further, the pressure regulator is inserted into the pressure regulator insertion hole of the flow channel adapter, so that a mounting member dedicated to the pressure regulator is not required.
Furthermore, since the pump discharge path of the fuel pump is inserted and disposed in the pump discharge path insertion hole of the flow path adapter screwed to the lid member, when the outer periphery of the fuel pump is attached to the stay by the band, The fuel pump can be firmly and securely attached to the stay.

又、本発明の第2の特徴によると、流路アダプターが合成樹脂材料によって形成され且つ流路アダプター内に穿設される燃料吐出流路を含む、ポンプ吐出路挿入孔、吐出管挿入孔、プレッシャーレギュレター挿入孔の全てが流路アダプターの射出成形時において一体的に鋳抜き形成されたので、流路アダプターを極めて安価に且つ軽量に形成できる。   According to the second feature of the present invention, a pump discharge passage insertion hole, a discharge pipe insertion hole, wherein the flow passage adapter is formed of a synthetic resin material and includes a fuel discharge passage formed in the flow passage adapter, Since all of the pressure regulator insertion holes are integrally formed by casting at the time of injection molding of the flow path adapter, the flow path adapter can be formed extremely inexpensively and lightly.

以下、本発明になる下付け用燃料供給装置の一実施例について図1により説明する。
Tは内部に燃料が貯溜される燃料タンクであり、重力方向における上部に給油孔(図示せず)が開口し、下方の底部Taに下方開口部Tbが開口して穿設される。
1は燃料タンクTの底部Taにネジ止め固定され、下方開口部Tbを気密的に閉塞保持する平板状の蓋部材であり、蓋部材1の上面1a上には板部材によって形成されるステー2が溶接等によって固定配置される。
このステー2は、蓋部材1の上面1aから上方に向かう上壁部2aと、上壁部2aから図において左方に向かう側壁部2bとにより形成される。
又、蓋部材1には上面1aより上方に向かって突出するとともに下面1bより下方に向かって突出する吐出管3が固定配置されるもので、吐出管3の上方突出部3aの外周に穿設された溝には第1シールリング4が縮設配置される。
Pは筒状のハウジング内にポンプ部とモータ部とが収納される電動型の燃料ポンプであり、その左端にはポンプ吸入路Paが突出して開口し、その右端にはポンプ吐出路Pbが突出して開口する。かかる燃料ポンプPは、ポンプ吸入路Paより燃料をポンプ部に吸入し、ポンプ部によって昇圧された燃料がポンプ吐出路Pbより吐出される。
そして、この燃料ポンプPは、ステー2の側壁部2bにバンド5を介して取着されるもので、このとき燃料ポンプPの長手軸心線X−Xは蓋部材1に沿って略平行に配置される。又、上記配置において、ポンプ吐出路Pbは、吐出管3の上方突出部3aの近傍に配置される。
本実施例において燃料ポンプPの長手軸心線X−Xは蓋部材1に対し、わずかに左下り傾斜に配置された。
In the following, an embodiment of the subordinate fuel supply apparatus according to the present invention will be described with reference to FIG.
T is a fuel tank in which fuel is stored. An oil supply hole (not shown) is opened in the upper part in the direction of gravity, and a lower opening Tb is opened in the lower bottom part Ta.
Reference numeral 1 denotes a flat lid member that is screwed and fixed to the bottom portion Ta of the fuel tank T and hermetically closes and holds the lower opening Tb. A stay 2 formed on the upper surface 1a of the lid member 1 by a plate member. Is fixedly arranged by welding or the like.
The stay 2 is formed by an upper wall portion 2a extending upward from the upper surface 1a of the lid member 1 and a side wall portion 2b extending leftward from the upper wall portion 2a in the drawing.
Further, the lid member 1 in which the discharge pipe 3 projecting downward from the lower surface 1b with projecting upward from the upper surface 1a is fixedly arranged, formed in the outer periphery of the upwardly projecting portion 3a of the discharge pipe 3 The first seal ring 4 is disposed in a reduced manner in the groove formed.
P is an electric fuel pump in which a pump part and a motor part are housed in a cylindrical housing. A pump suction path Pa projects from the left end and a pump discharge path Pb projects from the right end. Open. The fuel pump P sucks fuel into the pump part from the pump suction path Pa, and the fuel boosted by the pump part is discharged from the pump discharge path Pb.
The fuel pump P is attached to the side wall 2b of the stay 2 via a band 5. At this time, the longitudinal axis XX of the fuel pump P is substantially parallel along the lid member 1. Be placed. Further, in the above arrangement, the pump discharge path Pb is arranged in the vicinity of the upward projecting portion 3 a of the discharge pipe 3 .
In the present embodiment, the longitudinal axis XX of the fuel pump P is disposed slightly inclined to the left with respect to the lid member 1.

次に流路アダプターAについて以下に説明する。
流路アダプターAは、その内部に燃料吐出流路6が穿設され、この燃料吐出流路6より燃料ポンプ側の端部Aa(図において左方端)に向けてポンプ吐出路挿入孔6aが開口して穿設される。
又、燃料吐出流路6より下端Abに向けて吐出管挿入孔6bが開口して穿設され、更に燃料吐出流路6より下端Acに向けてプレッシャーレギュレター挿入孔6cが開口して穿設される。
Next, the flow path adapter A will be described below.
The flow path adapter A has a fuel discharge flow path 6 formed therein, and a pump discharge path insertion hole 6a extends from the fuel discharge flow path 6 toward an end Aa on the fuel pump side (left end in the figure). Open and drilled.
Further, a discharge pipe insertion hole 6b is opened from the fuel discharge channel 6 toward the lower end Ab, and further a pressure regulator insertion hole 6c is opened from the fuel discharge channel 6 toward the lower end Ac. The

Rはプレッシャーレギュレターであり、かかるプレッシャーレギュレターRは公知である。
8は上側ハウジング、9は上側ハウジング8の下方に配置されるカップ状の下側ハウジングであり、上側ハウジング8の下方鍔部と下側ハウジング9の上方鍔部との間にダイヤフラム10が挟持して配置され、ダイヤフラム10の上面と上側ハウジング8の下方鍔部に臨む凹部によって燃料室11が形成され、ダイヤフラム10の下面と下側ハウジング9の上方鍔部に臨む凹部によってスプリング室12が区分形成される。
又、上側ハウジング8には、一端が円筒部8aの上端8bに開口し、他端が燃料室11内に開口するレギュレター燃料流入路13と、一端が弁座14を介して燃料室11内に開口し、他端が外部に向かって開口するリターン燃料通路15が形成され、更に円筒部8aの外周に穿設された溝には第2シールリング16が縮設される。
尚、17はダイヤフラム10と同期的に移動し、弁座14を開閉制御する弁体である。
R is a pressure regulator, and such pressure regulator R is publicly known.
8 is an upper housing, and 9 is a cup-shaped lower housing disposed below the upper housing 8. A diaphragm 10 is sandwiched between a lower flange of the upper housing 8 and an upper flange of the lower housing 9. The fuel chamber 11 is formed by a recess facing the upper surface of the diaphragm 10 and the lower flange of the upper housing 8, and the spring chamber 12 is sectioned by the recess facing the lower surface of the diaphragm 10 and the upper flange of the lower housing 9. Is done.
Also, the upper housing 8 has one end opened to the upper end 8b of the cylindrical portion 8a and the other end opened into the fuel chamber 11, and one end into the fuel chamber 11 via the valve seat 14. A return fuel passage 15 having an opening and the other end opening toward the outside is formed, and a second seal ring 16 is contracted in a groove formed in the outer periphery of the cylindrical portion 8a.
Reference numeral 17 denotes a valve body that moves synchronously with the diaphragm 10 and controls the opening and closing of the valve seat 14.

そして、燃料供給装置Fは以下によって形成される。
燃料ポンプPには、そのポンプ吸入路PaにフィルターBが装着される。
又、流路アダプターAには、下端Acからプレッシャーレギュレター挿入孔6c内に向けてプレッシャーレギュレターRの円筒部8aが挿入配置され、かかる状態でプレッシャーレギュレターRは係止部材Cによって流路アダプターAに係止される。
以上によってプレッシャーレギュレターRが流路アダプターAに係止されるもので、これによるとプレッシャーレギュレターRのレギュレター燃料流入路13は流路アダプターA内の燃料吐出流路6に流路接続され、円筒部8aとプレッシャーレギュレター挿入孔6cとの間は第2シールリング16によって気密的に保持される。
次に、流路アダプターAの吐出管挿入孔6b内に、蓋部材1に立設された吐出管3の上方突出部3aが挿入配置され、かかる状態において、流路アダプターAの取付け鍔部Adがネジ20によって蓋部材1に螺着固定される。以上によると、流路アダプターAが蓋部材1に固定され、吐出管3は流路アダプターAの燃料吐出流路6に流路接続され、吐出管3の上方突出部3aと吐出管挿入孔6bとの間は、第1シールリング4によって気密的に保持される。
次に、ステー2の側壁部2bに臨んで燃料ポンプPが配置されるとともにポンプ吐出路Pbがゴム材料によって形成された環状のインシュレータ21を介して流路アダプターAのポンプ吐出路挿入孔6a内に挿入配置され、かかる状態において燃料ポンプPの外周部(ハウジングの外周)がバンド5を介してステー2の側壁部に締結される。
以上によると、燃料ポンプPは、その長手軸心線X−Xが蓋部材1と略平行に配置され、ポンプ吐出路Pbはインシュレータ21を介して流路アダプターAの燃料吐出流路6に気密的に流路接続される。
The fuel supply device F is formed by the following.
The fuel pump P is provided with a filter B in its pump suction path Pa.
Further, the cylindrical portion 8a of the pressure regulator R is inserted and disposed in the flow path adapter A from the lower end Ac into the pressure regulator insertion hole 6c. Locked.
Thus, the pressure regulator R is locked to the flow path adapter A. According to this, the regulator fuel inflow path 13 of the pressure regulator R is connected to the fuel discharge flow path 6 in the flow path adapter A, and the cylindrical portion The space between 8a and the pressure regulator insertion hole 6c is hermetically held by the second seal ring 16.
Next, the upper projecting portion 3a of the discharge pipe 3 erected on the lid member 1 is inserted and disposed in the discharge pipe insertion hole 6b of the flow path adapter A. In this state, the mounting flange Ad of the flow path adapter A is installed. Is fixed to the lid member 1 by screws 20. According to the above, the flow path adapter A is fixed to the lid member 1, the discharge pipe 3 is connected to the fuel discharge flow path 6 of the flow path adapter A, and the upper protruding portion 3 a of the discharge pipe 3 and the discharge pipe insertion hole 6 b. Is hermetically held by the first seal ring 4.
Next, the fuel pump P is arranged facing the side wall 2b of the stay 2, and the pump discharge passage Pb is inserted into the pump discharge passage insertion hole 6a of the flow path adapter A through the annular insulator 21 formed of a rubber material. In this state, the outer peripheral portion of the fuel pump P (the outer periphery of the housing) is fastened to the side wall portion of the stay 2 via the band 5.
According to the above, the fuel pump P has its longitudinal axis X-X disposed substantially parallel to the lid member 1, and the pump discharge path Pb is airtight to the fuel discharge path 6 of the flow path adapter A via the insulator 21. Are connected to each other.

以上によると、蓋部材1に、フィルターBを備える燃料ポンプP、プレッシャーレギュレターRを備える流路アダプターAが固定的に配置されるとともに燃料ポンプPのポンプ吐出路Pbが流路アダプターAの燃料吐出流路6に接続され、この燃料吐出流路6が吐出管3に接続されるとともに燃料吐出流路6がプレッシャーレギュレターRに接続される燃料供給装置Fが形成される。かかる燃料供給装置Fは蓋部材1に一体的に取着されたフィルターB、燃料ポンプP、流路アダプターA、プレッシャーレギュレターRが燃料タンクTの下方開口部Tbより燃料タンクT内に挿入配置され、かかる状態において下方開口部Tbが蓋部材1によって閉塞される。
かかる燃料供給装置において、燃料ポンプPが駆動されると、燃料タンクT内の燃料は、フィルターBによってその異物が除去され、ポンプ吸入路Paより燃料ポンプPのポンプ部に吸入されて昇圧され、この昇圧された燃料がポンプ吐出路Pbより流路アダプターAの燃料吐出流路6に吐出される。
そして、燃料吐出流路6内の燃料の一部は、吐出管3を介して外部に向けて吐出されるもので、燃料吐出流路6内の燃料の他部は、レギュレター燃料流入路13を介してプレッシャーレギュレターRの燃料室11内へ供給され、プレッシャーレギュレターRにおいて、この燃料圧力が所定の圧力に調圧される。尚、かかる調圧時における余剰燃料はリターン燃料通路15を介して燃料タンクT内へと戻される。(プレッシャーレギュレターRにおける燃料の調圧作用は従来と同様に行なわれるので省略された)
以上の如く、燃料吐出流路6内の燃料の他部が、プレッシャーレギュレターRによって所定の燃料圧力に調圧されたことにより、吐出管3から外部(燃料噴射装置の燃料噴射弁)に向かって所定の燃料圧力を備える燃料を吐出できることになる。
According to the above, the fuel pump P including the filter B and the flow path adapter A including the pressure regulator R are fixedly disposed on the lid member 1 and the pump discharge path Pb of the fuel pump P is the fuel discharge of the flow path adapter A. A fuel supply device F is formed which is connected to the flow path 6, the fuel discharge flow path 6 is connected to the discharge pipe 3, and the fuel discharge flow path 6 is connected to the pressure regulator R. In the fuel supply device F, a filter B, a fuel pump P, a flow path adapter A, and a pressure regulator R, which are integrally attached to the lid member 1, are inserted into the fuel tank T from the lower opening Tb of the fuel tank T. In such a state, the lower opening Tb is closed by the lid member 1.
In such a fuel supply device, when the fuel pump P is driven, the foreign matter in the fuel in the fuel tank T is removed by the filter B, and is sucked into the pump portion of the fuel pump P from the pump suction path Pa to be pressurized, The boosted fuel is discharged from the pump discharge passage Pb to the fuel discharge passage 6 of the passage adapter A.
A part of the fuel in the fuel discharge passage 6 is discharged to the outside through the discharge pipe 3, and the other part of the fuel in the fuel discharge passage 6 passes through the regulator fuel inflow passage 13. The pressure regulator R is supplied into the fuel chamber 11 via the pressure regulator R, and the fuel pressure is regulated to a predetermined pressure in the pressure regulator R. The surplus fuel at the time of such pressure adjustment is returned to the fuel tank T through the return fuel passage 15. (Fuel pressure regulation in the pressure regulator R is omitted because it is performed in the same way as before)
As described above, when the other part of the fuel in the fuel discharge passage 6 is adjusted to a predetermined fuel pressure by the pressure regulator R, the discharge pipe 3 is directed to the outside (the fuel injection valve of the fuel injection device). A fuel having a predetermined fuel pressure can be discharged.

ここで、本発明になる前記下付け用燃料供給装置によると、ステー2に取着された燃料ポンプPの長手軸心線X−Xが蓋部材1と略平行に配置されたので、燃料ポンプPが燃料タンクTの下方開口部Tbより燃料タンクT内に配置された際、燃料ポンプPを燃料タンクTの底部Taの近傍に配置でき、燃料ポンプPが燃料タンクT内の上方に向けて大きく突出して配置されることがない。
以上によると、燃料タンクの深さが浅い扁平型の燃料タンク内への装着の自由度を大きく向上でき、かかる扁平型の燃料タンクがよく使用される自動二輪車用の燃料供給装置として好適である。
又、上記によれば、従来の扁平型の燃料タンクに対して単にその底部Taに下方開口部Tbを穿設すればよいので、従来の気化器方式から燃料噴射装置への燃料供給方法の変更時にあっても燃料タンクをそのまま流用することができ、燃料タンクの改造に伴う金型費の増加を抑止でき、燃料タンクの形状変更に伴う自動二輪車の外観性の見直しを必要としない。
又、燃料ポンプP、吐出管3、プレッシャーレギュレターRとの流路接続が単一の流路アダプターAによって行なうことができたので、極めて小型で安価な燃料吐出系を得ることができ、又ポンプ吐出路Pb、吐出管3、プレッシャーレギュレターRを、剛性を有する流路アダプターAのポンプ吐出路挿入孔6a、吐出管挿入孔6b、プレッシャーレギュレター挿入孔6cに挿入配置したのでその挿入接続作業を容易に行なうことができ作業性を大きく向上できる。
又、燃料ポンプPのポンプ吐出路Pbが吐出管3に近接して配置されたことによると、ポンプ吐出路Pbと吐出管3とを連絡する燃料吐出流路6の通路長さを短くすることができたもので、燃料ポンプP内に生起したベーパーが燃料吐出流路6内に滞溜することなく即座に吐出管3より外方に向けて排出できる。
更にプレッシャーレギュレターRが流路アダプターAのプレッシャーレギュレター挿入孔6cに装着して配置されたことによると、流路を接続する為に用意された部材としての流路アダプターAを装着の為の部材として利用できたので、専用の取付け部材を用意する必要がなく、且つプレッシャーレギュレターRをコンパクトに装着できる。
更に又、燃料ポンプPは、その一端に突出するポンプ吐出路Pbが蓋部材1に螺着固定された流路アダプターAのポンプ吐出路挿入孔6aに挿入支持され、燃料ポンプPのハウジングの外周がバンド5を介してステー2に締結されたので、燃料ポンプPを強固に且つ確実に固定できたものである。
又、流路アダプターAが合成樹脂材料によって形成され、且つ燃料吐出流路6を含むポンプ吐出路挿入孔6a、吐出管挿入孔6b、プレッシャーレギュレター挿入孔6c、を流路アダプターAの射出成形時において同時に鋳抜き形成したことによると、流路アダプターAを極めて安価に且つ軽量に形成することができる。
Here, according to the subordinate fuel supply device according to the present invention, the longitudinal axis XX of the fuel pump P attached to the stay 2 is disposed substantially parallel to the lid member 1. When P is arranged in the fuel tank T from the lower opening Tb of the fuel tank T, the fuel pump P can be arranged in the vicinity of the bottom portion Ta of the fuel tank T, and the fuel pump P faces upward in the fuel tank T. It does not protrude greatly.
According to the above, the degree of freedom of mounting in a flat fuel tank having a shallow fuel tank can be greatly improved, and such a flat fuel tank is suitable as a fuel supply device for a motorcycle that is often used. .
In addition, according to the above, since a lower opening Tb has only to be formed in the bottom portion Ta of a conventional flat fuel tank, the fuel supply method is changed from the conventional carburetor system to the fuel injection device. Even in some cases, the fuel tank can be used as it is, the increase in mold costs associated with the modification of the fuel tank can be suppressed, and there is no need to review the appearance of the motorcycle accompanying the change in the shape of the fuel tank.
In addition, since the flow path connection with the fuel pump P, the discharge pipe 3, and the pressure regulator R can be performed by the single flow path adapter A, an extremely small and inexpensive fuel discharge system can be obtained. Since the discharge path Pb, the discharge pipe 3, and the pressure regulator R are inserted and disposed in the pump discharge path insertion hole 6a, the discharge pipe insertion hole 6b, and the pressure regulator insertion hole 6c of the rigid flow path adapter A, it is easy to insert and connect them. The workability can be greatly improved.
Further, according to the fact that the pump discharge path Pb of the fuel pump P is arranged close to the discharge pipe 3, the length of the fuel discharge flow path 6 that connects the pump discharge path Pb and the discharge pipe 3 is shortened. Thus, the vapor generated in the fuel pump P can be immediately discharged outward from the discharge pipe 3 without accumulating in the fuel discharge flow path 6.
Furthermore, according to the pressure regulator R being mounted and disposed in the pressure regulator insertion hole 6c of the flow path adapter A, the flow path adapter A as a member prepared for connecting the flow path is used as a member for mounting. Since it was available, there is no need to prepare a dedicated mounting member, and the pressure regulator R can be mounted in a compact manner.
Further, the fuel pump P is inserted and supported in the pump discharge passage insertion hole 6a of the flow path adapter A, in which the pump discharge passage Pb protruding at one end is screwed and fixed to the lid member 1, and the outer periphery of the housing of the fuel pump P Is fastened to the stay 2 via the band 5, so that the fuel pump P can be firmly and securely fixed.
Also, the flow path adapter A is formed of a synthetic resin material, and the pump discharge path insertion hole 6a including the fuel discharge flow path 6, the discharge pipe insertion hole 6b, and the pressure regulator insertion hole 6c are formed at the time of injection molding of the flow path adapter A. In FIG. 5, the flow path adapter A can be formed at a very low cost and light weight.

本発明になる下付け用燃料供給装置の一実施例を示す要部縦断面図。The principal part longitudinal cross-sectional view which shows one Example of the fuel supply apparatus for subordinates which becomes this invention.

1 蓋部材
2 ステー
3 吐出管
3a 吐出管の上方突出部
6 燃料吐出流路
6a ポンプ吐出路挿入孔
6b 吐出管挿入孔
6c プレッシャーレギュレター挿入孔
20 ネジ
A 流路アダプター
Ad 鍔部
P 燃料ポンプ
Pb ポンプ吐出路
R プレッシャーレギュレター
T 燃料タンク
Ta 燃料タンクの底部
Tb 下方開口
1 Lid member 2 Stay 3 Discharge pipe
3a Upper discharge portion 6 of the discharge pipe 6 Fuel discharge passage 6a Pump discharge passage insertion hole 6b Discharge pipe insertion hole 6c Pressure regulator insertion hole
20 Screw A Flow path adapter
Ad buttock P fuel pump
Pb Pump discharge path R Pressure regulator
T Fuel tank
Ta Fuel tank bottom
Tb downward opening

Claims (2)

燃料タンク(T)の底部(Ta)に穿設された下方開口部(Tb)を閉塞する平板状の蓋部材(1)にステー(2)が立設され、該ステー(2)に取着された燃料ポンプ(P)によって燃料タンク(T)内の燃料が吸入されて昇圧され、この燃料が蓋部材(1)に立設された吐出管(3)より外部に向けて供給される下付け用燃料供給装置において、
燃料ポンプ(P)を、その長手軸心線(X−X)が蓋部材(1)と略平行になるように配置するとともに、この燃料ポンプ(P)の一端部に前記長手軸心線(X−X)に沿って突設されるポンプ吐出路(Pb)を、蓋部材(1)の上面から起立する前記吐出管(3)の上方突出部(3a)の近傍に配置し、
一端には前記ポンプ吐出路(Pb)が挿入配置されるポンプ吐出路挿入孔(6a)を、他端には前記吐出管(3)の上方突出部(3a)が挿入配置される吐出管挿入孔(6b)をそれぞれ開口させた流路アダプター(A)に、蓋部材(1)にネジ(20)で固着される取付け鍔部(Ad)を一体に形成し、
また前記流路アダプター(A)には、前記ポンプ吐出路挿入孔(6a)および吐出管挿入孔(6b)間を連通する流路(6)と、この流路(6)に連通するとともに前記吐出管挿入孔(6b)と平行して流路アダプター(A)の前記他端部に開口するプレッシャーレギュレター挿入孔(6c)とを形成し、このプレッシャーレギュレター挿入孔(6c)にプレッシャーレギュレター(R)を装着したことを特徴とする下付け用燃料供給装置。
A stay (2) is erected on a flat lid member (1) that closes a lower opening (Tb) formed in the bottom (Ta ) of the fuel tank (T) , and is attached to the stay (2) . The fuel in the fuel tank (T) is sucked and pressurized by the fuel pump (P) , and this fuel is supplied to the outside from the discharge pipe (3) standing on the lid member (1). In the attached fuel supply device,
The fuel pump (P) is arranged so that its longitudinal axis (XX) is substantially parallel to the lid member (1), and the longitudinal axis ( A pump discharge path (Pb) projecting along XX) is arranged in the vicinity of the upper protrusion (3a) of the discharge pipe (3) rising from the upper surface of the lid member (1);
A pump discharge passage insertion hole (6a) into which the pump discharge passage (Pb) is inserted and arranged at one end, and a discharge pipe insertion into which the upper protrusion (3a) of the discharge pipe (3) is inserted and arranged at the other end On the flow path adapter (A) having the holes (6b) respectively opened, the attachment flange (Ad) fixed to the lid member (1) with the screw (20) is integrally formed,
The flow path adapter (A) communicates with the flow path (6) and the flow path (6) communicating between the pump discharge path insertion hole (6a) and the discharge pipe insertion hole (6b). A pressure regulator insertion hole (6c) that opens at the other end of the flow path adapter (A) is formed in parallel with the discharge pipe insertion hole (6b), and the pressure regulator (R ) Is attached to the fuel supply device for the subscript.
前記流路アダプター(A)を合成樹脂材料によって射出成型するとともに燃料吐出流路を含むポンプ吐出路挿入孔6a、吐出管挿入孔6b、プレッシャーレギュレター挿入孔6cを同時に鋳抜き形成したことを特徴とする請求項1記載の下付け用燃料供給装置。 Pump discharge passage insertion hole together with the fuel discharge passage (6) is injection molded of a synthetic resin material the channel adapter (A) (6a), the discharge pipe insertion hole (6b), the pressure regulator insertion hole (6c) 2. A fuel supply device for underlaying according to claim 1, wherein the fuel supply device is cast and formed at the same time.
JP2006050244A 2006-02-27 2006-02-27 Subsidiary fuel supply system Active JP4638364B2 (en)

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EP2107233A1 (en) * 2008-04-04 2009-10-07 Kwang Yang Motor Co., Ltd. Installation structure for fuel pump and pressure regulating valve of motorcycle

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Publication number Priority date Publication date Assignee Title
JPH1047185A (en) * 1996-08-06 1998-02-17 Aisan Ind Co Ltd Fuel supplying device for internal combustion engine
WO1999025975A1 (en) * 1997-11-19 1999-05-27 Mitsubishi Denki Kabushiki Kaisha Fuel feeder for vehicles
JP3241568B2 (en) * 1995-07-18 2001-12-25 愛三工業株式会社 Fuel supply device for internal combustion engine
JP2003074436A (en) * 2001-08-31 2003-03-12 Keihin Corp Fuel supply device for internal combustion engine
JP2003120453A (en) * 2001-10-16 2003-04-23 Honda Motor Co Ltd Fuel feed unit for small-sized vehicle
WO2005070750A1 (en) * 2004-01-27 2005-08-04 Yamaha Hatsudoki Kabushiki Kaisha Saddle riding-type vehicle
JP2006029265A (en) * 2004-07-20 2006-02-02 Keihin Corp Fuel feed unit in fuel tank for two-wheeler vehicle

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3241568B2 (en) * 1995-07-18 2001-12-25 愛三工業株式会社 Fuel supply device for internal combustion engine
JPH1047185A (en) * 1996-08-06 1998-02-17 Aisan Ind Co Ltd Fuel supplying device for internal combustion engine
WO1999025975A1 (en) * 1997-11-19 1999-05-27 Mitsubishi Denki Kabushiki Kaisha Fuel feeder for vehicles
JP2003074436A (en) * 2001-08-31 2003-03-12 Keihin Corp Fuel supply device for internal combustion engine
JP2003120453A (en) * 2001-10-16 2003-04-23 Honda Motor Co Ltd Fuel feed unit for small-sized vehicle
WO2005070750A1 (en) * 2004-01-27 2005-08-04 Yamaha Hatsudoki Kabushiki Kaisha Saddle riding-type vehicle
JP2006029265A (en) * 2004-07-20 2006-02-02 Keihin Corp Fuel feed unit in fuel tank for two-wheeler vehicle

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