JP2002293281A - Fuel supply device for motorcycle - Google Patents
Fuel supply device for motorcycleInfo
- Publication number
- JP2002293281A JP2002293281A JP2001100514A JP2001100514A JP2002293281A JP 2002293281 A JP2002293281 A JP 2002293281A JP 2001100514 A JP2001100514 A JP 2001100514A JP 2001100514 A JP2001100514 A JP 2001100514A JP 2002293281 A JP2002293281 A JP 2002293281A
- Authority
- JP
- Japan
- Prior art keywords
- fuel
- fuel tank
- motorcycle
- supply device
- suction
- 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
Links
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
Landscapes
- Automatic Cycles, And Cycles In General (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、燃料タンク内部に
設置した燃料ポンプにより燃料タンク内部の燃料をエン
ジン側に供給するように構成された自動二輪車の燃料供
給装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a motorcycle fuel supply apparatus configured to supply fuel in a fuel tank to an engine by a fuel pump installed in the fuel tank.
【０００２】[0002]
【従来の技術】自動二輪車においては、一般にエンジン
の上方、かつハンドルバーと着座シートの間に燃料タン
クが設置されている。この燃料タンク内の燃料を燃料ポ
ンプにより気化器や燃料噴射装置に供給する場合には、
限られたスペースの関係で燃料ポンプが燃料タンクの内
部に設置されることが多い。この場合、燃料ポンプを燃
料タンクの最低部に設置しないと燃料タンク内の燃料を
全部使い切ることが出来なくなり、燃料の無効残量分が
生じてしまう。2. Description of the Related Art In a motorcycle, a fuel tank is generally installed above an engine and between a handlebar and a seat. When the fuel in the fuel tank is supplied to a carburetor or a fuel injection device by a fuel pump,
Due to the limited space, a fuel pump is often installed inside a fuel tank. In this case, unless the fuel pump is installed at the lowest part of the fuel tank, the fuel in the fuel tank cannot be completely used up, resulting in an ineffective remaining amount of fuel.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、このよ
うに燃料ポンプを燃料タンクの最低部に設置しなければ
ならないという制約があるため、燃料タンク回りのデザ
イン性やレイアウト性が低下しやすく、燃料ポンプの設
置が自動二輪車の設計を困難にする原因となっていた。However, since there is such a restriction that the fuel pump must be installed at the lowest part of the fuel tank, the design and layout of the fuel tank are apt to be reduced, and the fuel pump is difficult to operate. This has made motorcycle design difficult.
【０００４】特に、自動二輪車の車体フレーム前半部が
左右一対のフレーム構造材により構成され、その上部に
燃料タンクが設置されている場合には、燃料タンクの直
下に位置するフレーム構造材に阻害されて燃料ポンプの
設置が困難になるとともに、燃料タンクの容量が小さく
なりやすい。また、燃料タンクの全高や全幅を大きくす
ることにより燃料タンクの容量を増大させようとする
と、ライダーのライディングポジションが悪化したり、
自動二輪車およびライダーの前面投影面積が増大して空
気抵抗が増大するといった別な問題が生じる。[0004] In particular, when the first half of the body frame of a motorcycle is formed of a pair of left and right frame structural members, and a fuel tank is provided above the frame structural members, the first half is hindered by the frame structural members located immediately below the fuel tank. Therefore, it is difficult to install the fuel pump, and the capacity of the fuel tank tends to be small. Also, increasing the height and width of the fuel tank to increase the capacity of the fuel tank will deteriorate the riding position of the rider,
Another problem arises in that the front projected area of the motorcycle and the rider is increased and the air resistance is increased.
【０００５】本発明に係る自動二輪車の燃料供給装置
は、上記問題点を解決するべく発明されたものであり、
その発明の目的は、燃料タンクの無効残量を減少させ、
燃料タンク回りのデザイン性とレイアウト性を向上させ
るとともに、燃料タンクの容量拡大と、燃料残量が少な
い時の急加速時における燃料切れを防止することにあ
る。[0005] A motorcycle fuel supply apparatus according to the present invention has been invented to solve the above problems.
The purpose of the invention is to reduce the inactive remaining amount of the fuel tank,
It is an object of the present invention to improve the design and layout of a fuel tank, increase the capacity of the fuel tank, and prevent running out of fuel during rapid acceleration when the remaining fuel amount is small.
【０００６】[0006]
【課題を解決するための手段】上記目的を達成するた
め、本発明に係る自動二輪車の燃料供給装置は、請求項
１に記載したように、燃料タンクの内部に設置した燃料
ポンプにより燃料タンク内の燃料をエンジン側に供給す
るように構成された自動二輪車の燃料供給装置におい
て、上記燃料ポンプの吸入部を燃料タンクの外部に開設
する一方、外部から燃料タンクの最低部に通じる吸出部
を燃料タンクの外部に開設し、上記吸入部と吸出部との
間を外部管路で接続したことを特徴とするものである。
この構成によれば、燃料ポンプの配置場所に関わらず常
に燃料タンクの最低部から燃料が吸い出されるため無効
残量が減少し、しかも燃料ポンプの配置自由度が増すの
で燃料タンク回りのデザイン性とレイアウト性が向上す
る。In order to achieve the above object, a fuel supply device for a motorcycle according to the present invention is provided by a fuel pump installed inside the fuel tank. In the fuel supply device for a motorcycle configured to supply the fuel to the engine side, the suction portion of the fuel pump is opened outside the fuel tank, and the suction portion communicating from the outside to the lowest portion of the fuel tank is provided with the fuel. It is provided outside the tank, and the suction section and the suction section are connected by an external conduit.
According to this configuration, regardless of the location of the fuel pump, fuel is always sucked from the lowest portion of the fuel tank, so that the amount of invalid fuel remaining is reduced, and the degree of freedom in arranging the fuel pump is increased. And the layout is improved.
【０００７】また、本発明に係る自動二輪車の燃料供給
装置は、請求項２に記載したように、自動二輪車の車体
フレーム前半部が左右一対のフレーム構造材により構成
されている場合に、前記燃料タンクを上記フレーム構造
材の上に跨設し、車両前後方向視で前記燃料ポンプを左
右のフレーム構造材の間に位置するように燃料タンクの
底面に設置するとともに、燃料ポンプの下部を燃料タン
クの底面より下方に突出させ、この突出部に前記吸入部
を設けた。According to a second aspect of the present invention, there is provided a fuel supply device for a motorcycle, wherein the first half of the body frame of the motorcycle is formed of a pair of left and right frame structural members. A tank is laid over the frame structural material, and the fuel pump is installed on the bottom surface of the fuel tank so as to be located between the left and right frame structural materials when viewed in the front-rear direction of the vehicle. , Projecting downward from the bottom surface, and the projecting portion is provided with the suction portion.
【０００８】上記構成とすれば、左右一対のフレーム構
造材に阻害されることなく燃料タンクの底面に燃料ポン
プを低い高さで設置できるので、燃料タンク回りのデザ
イン性とレイアウト性が向上する。また、フレーム構造
材の上に跨設される燃料タンクにはフレーム構造材の両
側方に位置するオーバーハング部が形成されるため、燃
料タンクの全高や全幅を大きくすることなく容量を拡大
することができる。[0008] With the above structure, the fuel pump can be installed at a low height on the bottom surface of the fuel tank without being hindered by the pair of left and right frame structural members, so that the design and layout of the fuel tank can be improved. In addition, since the fuel tank laid over the frame structural material has overhangs located on both sides of the frame structural material, the capacity can be increased without increasing the overall height and width of the fuel tank. Can be.
【０００９】さらに、本発明に係る自動二輪車の燃料供
給装置は、請求項３に記載したように、前記燃料タンク
の最後部を燃料タンクの最も低い部分の一つとし、この
部分の底面上に上方に開口する集液カップを設置し、こ
の集液カップの底部から燃料タンクの外部に通じるよう
に前記吸出部を設けた。こうした場合、燃料残量が少な
い時における急加速時には燃料タンク内の燃料が後方の
集液カップへ流れるため、燃料切れが防止される。Further, in the fuel supply device for a motorcycle according to the present invention, the rearmost portion of the fuel tank may be one of the lowest portions of the fuel tank, and the fuel tank may be provided on a bottom surface of this portion. A liquid collection cup opening upward was provided, and the suction part was provided so as to communicate from the bottom of the liquid collection cup to the outside of the fuel tank. In such a case, the fuel in the fuel tank flows to the rear collecting cup at the time of rapid acceleration when the remaining fuel amount is small, so that running out of fuel is prevented.
【００１０】そして、本発明に係る自動二輪車の燃料供
給装置は、請求項４に記載したように、車体側面視で左
右一対のフレーム構造材を燃料タンクの最後部よりも下
方に配設し、この最後部の底面を略平面状にして前記集
液カップを設置した。これにより、燃料タンク最後部の
高さをより低くして集液カップへの燃料の流れを良く
し、燃料残量が少ない時における燃料切れを防止するこ
とができる。In the fuel supply device for a motorcycle according to the present invention, a pair of left and right frame structural members are disposed below the rearmost portion of the fuel tank when viewed from the side of the vehicle body. The liquid collection cup was set with the bottom surface of the rearmost portion being substantially flat. As a result, the height of the rearmost portion of the fuel tank can be made lower to improve the flow of fuel to the liquid collection cup, and it is possible to prevent running out of fuel when the remaining fuel amount is small.
【００１１】また、本発明に係る自動二輪車の燃料供給
装置は、請求項５に記載したように、車体側面視で前記
集液カップを前後輪の略中間位置に配置した。こうすれ
ば、走行時における車体の上下揺動量が最も少ない場所
に集液カップが設置されるので、集液カップの燃料保持
性が良くなり、燃料残量が少ない時における燃料切れが
一層効果的に防止される。Further, in the fuel supply device for a motorcycle according to the present invention, the liquid collection cup is disposed at a substantially intermediate position between the front and rear wheels as viewed from the side of the vehicle body. With this configuration, the liquid collecting cup is installed in a place where the amount of vertical swing of the vehicle body during traveling is the smallest, so that the fuel holding of the liquid collecting cup is improved, and the running out of fuel when the remaining fuel amount is small is more effective. Is prevented.
【００１２】さらに、本発明に係る自動二輪車の燃料供
給装置は、請求項６に記載したように、前記フレーム構
造材の両側方に位置する前記燃料タンクのオーバーハン
グ部の少なくとも片方の最低部に吸出部を設け、この吸
出部と燃料ポンプの吸入部との間を外部管路で接続し、
上記外部管路をフレーム構造材の下方にくぐらせた。こ
れにより、燃料タンク回りのデザイン性とレイアウト性
が向上し、燃料タンクの容量拡大も可能になる。Further, in the motorcycle fuel supply device according to the present invention, at least one of the overhang portions of the fuel tank located on both sides of the frame structural member is provided at the lowest portion. A suction section is provided, and the suction section and the suction section of the fuel pump are connected by an external conduit,
The external conduit was passed below the frame structural material. As a result, the design and layout of the fuel tank can be improved, and the capacity of the fuel tank can be increased.
【００１３】[0013]
【発明の実施形態】以下、本発明の実施形態について図
面を参照しながら説明する。図１は、本発明に係る燃料
供給装置が適用された自動二輪車の一例を示す左側面図
である。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a left side view showing an example of a motorcycle to which a fuel supply device according to the present invention is applied.
【００１４】この自動二輪車１は、その車体フレーム２
の前半部分にエンジン３が搭載され、その後方に燃料噴
射装置４とエアクリーナー５が設置される一方、車体フ
レーム２の前頭部に前輪６を支持するフロントフォーク
７がハンドルバー８と共に軸支され、車体フレーム２の
中央下部に後輪９を支持するスイングアーム１０が軸支
されている。そして、エンジン３の上方に燃料タンク１
１が設置され、その後方に着座シート１２が載置されて
いる。The motorcycle 1 has a body frame 2
An engine 3 is mounted on a front half of the vehicle body, and a fuel injection device 4 and an air cleaner 5 are installed behind the engine 3. A front fork 7 supporting a front wheel 6 is supported on a front head of the body frame 2 together with a handle bar 8. A swing arm 10 that supports the rear wheel 9 is supported at the lower center of the body frame 2. The fuel tank 1 is located above the engine 3.
1, and a seat 12 is placed behind the seat 1.
【００１５】燃料タンク１１の内部には燃料ポンプ１３
と集液カップ１４が設置され、燃料タンク１１内の燃料
が燃料ポンプ１３によりエンジン３の燃料噴射装置４に
供給される。本発明に係る第１実施形態の燃料供給装置
は燃料タンク１１と燃料ポンプ１３と集液カップ１４を
備えて構成されている。図２は燃料供給装置を拡大した
左側面図であり、図３の（ａ）と（ｂ）はそれぞれ図２
のＩＩＩａ−ＩＩＩａ線、ＩＩＩｂ−ＩＩＩｂ線に沿う
縦断面図である。A fuel pump 13 is provided inside the fuel tank 11.
And a liquid collection cup 14, and the fuel in the fuel tank 11 is supplied to the fuel injection device 4 of the engine 3 by the fuel pump 13. The fuel supply device according to the first embodiment of the present invention includes a fuel tank 11, a fuel pump 13, and a liquid collection cup 14. FIG. 2 is an enlarged left side view of the fuel supply device, and (a) and (b) of FIG.
FIG. 3 is a vertical sectional view taken along lines IIIa-IIIa and IIIb-IIIb of FIG.
【００１６】ところで、車体フレーム２の前半部を構成
するのは左右一対のアッパーパイプ１６であり、燃料タ
ンク１１はこれら２本のアッパーパイプ１６の上を跨ぐ
ように跨設されている。したがって、図３（ａ）に示す
ように燃料タンク１１の車両前後方向視での縦断面形状
は略馬蹄形状をしており、燃料タンク１１の左右両側下
部には左右のアッパーパイプ１６の外側方に位置するオ
ーバーハング部１１ａがある。また、燃料タンク１１の
頂部には給油キャップを設けるための給油開口部１７が
形成されている。The front half of the body frame 2 is composed of a pair of left and right upper pipes 16, and the fuel tank 11 is provided so as to straddle these two upper pipes 16. Therefore, as shown in FIG. 3A, the vertical cross-sectional shape of the fuel tank 11 when viewed in the front-rear direction of the vehicle is substantially horseshoe-shaped. There is an overhang portion 11a located at the position. A fuel supply opening 17 for providing a fuel supply cap is formed at the top of the fuel tank 11.
【００１７】燃料ポンプ１３は、車両前後方向視で左右
のアッパーパイプ１６の間に位置するように燃料タンク
１１の中間部の底面１１ｂに設置されている。この部分
にはポンプ取付口１８が穿設されており、その周囲上面
に環状のナットプレート１９が固着されている。一方、
燃料ポンプ１３の縦長のポンプ本体２１の下寄りには取
付フランジ２２が設けられており、この取付フランジ２
２の下面に、上方に開口する椀状に形成されたロアーハ
ウジング２３の取付フランジ２４が重ねられ、２枚のフ
ランジ２２，２４がポンプ取付口１８の下部に当てがわ
れて下方から複数の取付ボルト２５がナットプレート１
９のめねじに締結されることにより、燃料ポンプ１３全
体が燃料タンク１１の中間部の底面１１ｂに固定され
る。The fuel pump 13 is provided on the bottom surface 11b of the intermediate portion of the fuel tank 11 so as to be located between the left and right upper pipes 16 when viewed in the front-rear direction of the vehicle. A pump mounting port 18 is formed in this portion, and an annular nut plate 19 is fixed to an upper surface around the pump mounting port 18. on the other hand,
A mounting flange 22 is provided below the vertically long pump body 21 of the fuel pump 13.
A mounting flange 24 of a lower housing 23 formed in an upwardly opening bowl shape is superimposed on the lower surface of the pump 2, and the two flanges 22, 24 are applied to a lower portion of the pump mounting port 18 to mount a plurality of mountings from below. Bolt 25 is nut plate 1
The entirety of the fuel pump 13 is fixed to the bottom surface 11b of the intermediate portion of the fuel tank 11 by being fastened to the female screw 9.
【００１８】このため、燃料ポンプ１３の下部をなすロ
アーハウジング２３が燃料タンク１１の底面１１ｂより
下方に突出して外部に露出しており、このロアーハウジ
ング２３の内部にポンプ本体２１の吸入フィルター２６
が入り込んでいる。なお、ロアーハウジング２３の内部
空間は燃料タンク１１の内部空間から隔絶されている。For this reason, the lower housing 23 which forms the lower part of the fuel pump 13 projects below the bottom surface 11b of the fuel tank 11 and is exposed to the outside. The suction filter 26 of the pump body 21 is provided inside the lower housing 23.
Is penetrating. The inner space of the lower housing 23 is isolated from the inner space of the fuel tank 11.
【００１９】また、ロアーハウジング２３の底部には燃
料ポンプ１３の吸入部２８が開設されている。吸入部２
８は例えばユニオン状に延出され、その先端が左斜め後
方に指向している。なお、燃料タンク１１のポンプ取付
口１８と燃料ポンプ１３の取付フランジ２２と取付フラ
ンジ２４との間には図示しないパッキン材が介装されて
燃料漏れが防止される。Further, a suction portion 28 of the fuel pump 13 is provided at the bottom of the lower housing 23. Inhalation part 2
Reference numeral 8 extends in, for example, a union shape, and its tip is directed obliquely to the left rearward. A packing material (not shown) is interposed between the pump mounting port 18 of the fuel tank 11 and the mounting flanges 22 and 24 of the fuel pump 13 to prevent fuel leakage.
【００２０】一方、燃料タンク１１の最後部は、オーバ
ーハング部１１ａと共に燃料タンク１１の最も低い部分
の一つとされている。車体側面視で左右一対のフレーム
構造材は燃料タンク１１の最後部よりも下方を通るよう
に配設されており、燃料タンク１１最後部の底面１１ｃ
は略平面状に形成され、この略平面状の部分の上に集液
カップ１４が設置されている。図１に示すように、集液
カップ１４は車体側面視で前輪６と後輪９の略中間位置
に位置している。On the other hand, the rearmost portion of the fuel tank 11 is one of the lowest portions of the fuel tank 11 together with the overhang portion 11a. The pair of left and right frame structural members are disposed so as to pass below the rearmost portion of the fuel tank 11 when viewed from the side of the vehicle body.
Is formed in a substantially planar shape, and a liquid collection cup 14 is provided on the substantially planar portion. As shown in FIG. 1, the liquid collection cup 14 is located at a substantially intermediate position between the front wheel 6 and the rear wheel 9 in a side view of the vehicle body.
【００２１】集液カップ１４は上方に開口するカップで
あり、ブラケット２９を介して燃料タンク１１最後部の
底面１１ｃ上に固定され、その側面に縦長の燃料流入穴
３０が穿設されている。また、集液カップ１４の底部か
らは燃料タンク１１の外部に通じるように吸出部３１が
設けられている。この吸出部３１も燃料ポンプ１３の吸
入部２８と同様にユニオン状に形成されており、その先
端が左斜め前方に指向している。なお、車体側面視で吸
出部３１は集液カップ１４底部の前寄りに位置付けら
れ、燃料流入穴３０は集液カップ１４の後寄りに位置付
けられている。The liquid collection cup 14 is a cup that opens upward, is fixed on the bottom surface 11c at the rearmost portion of the fuel tank 11 via a bracket 29, and has a vertically long fuel inflow hole 30 formed in the side surface thereof. A suction part 31 is provided from the bottom of the liquid collection cup 14 so as to communicate with the outside of the fuel tank 11. The suction portion 31 is also formed in a union shape like the suction portion 28 of the fuel pump 13, and the tip thereof is directed obliquely left and forward. Note that, when viewed from the side of the vehicle body, the suction portion 31 is located near the bottom of the liquid collection cup 14, and the fuel inflow hole 30 is located near the rear of the liquid collection cup 14.
【００２２】そして、この吸出部３１と燃料ポンプ１３
の吸入部２８との間が外部管路３２で接続されている。
外部管路３２は例えばゴムホースであり、左側のアッパ
ーパイプ１６の左側方を通るように配設される。The suction section 31 and the fuel pump 13
Is connected by an external conduit 32.
The external conduit 32 is, for example, a rubber hose, and is disposed so as to pass through the left side of the left upper pipe 16.
【００２３】第１実施形態の燃料供給装置は以上のよう
に構成されている。燃料タンク１１の給油開口部１７か
ら燃料が給油されると、燃料ポンプ１３のポンプ本体２
１や集液カップ１４が燃料の液面下に没する。そして、
燃料ポンプ１３が作動すると、吸引圧によりロアーハウ
ジング２３の内部空間が負圧になるため、燃料タンク１
１内の燃料が、集液カップ１４→吸出部３１→外部管路
３２→吸入部２８の順に流れてロアーハウジング２３内
に流入し、吸入フィルター２６に濾過されてからポンプ
本体２１に吸入され、ポンプ本体２１に設けられた図示
しない吐出部から吐出されて燃料噴射装置４に圧送され
る。The fuel supply device of the first embodiment is configured as described above. When fuel is supplied from the fuel supply opening 17 of the fuel tank 11, the pump body 2 of the fuel pump 13
1 and the liquid collecting cup 14 sink below the liquid level of the fuel. And
When the fuel pump 13 operates, the internal space of the lower housing 23 becomes negative pressure due to the suction pressure.
The fuel in 1 flows in the order of the liquid collection cup 14 → the suction part 31 → the external conduit 32 → the suction part 28, flows into the lower housing 23, is filtered by the suction filter 26, and is sucked into the pump body 21, The fuel is discharged from a discharge unit (not shown) provided in the pump body 21 and is pressure-fed to the fuel injection device 4.
【００２４】なお、燃料タンク１１内における燃料残量
が少なくなり、燃料の液面が集液カップ１４の上縁を下
回っても、残り少ない燃料が燃料流入穴３０から集液カ
ップ１４内に流入するため、燃料切れが遅延される。ま
た、この時に自動二輪車１が急減速して慣性の法則によ
り燃料タンク１１内の燃料が前方に移動しても、集液カ
ップ１４の内部に少量の燃料が保持されるため燃料切れ
が起きにくい。車体側面視で集液カップ１４の燃料流入
穴３０は吸出部３１よりも後方に位置しているため、急
減速時における集液カップ１４内の燃料は燃料流入穴３
０から流出することなく吸出部３１から吸い出される。It should be noted that even if the remaining fuel level in the fuel tank 11 decreases and the liquid level of the fuel falls below the upper edge of the liquid collecting cup 14, the remaining fuel flows into the liquid collecting cup 14 from the fuel inlet hole 30. Therefore, running out of fuel is delayed. Also, at this time, even if the motorcycle 1 suddenly decelerates and the fuel in the fuel tank 11 moves forward due to the law of inertia, a small amount of fuel is held inside the liquid collection cup 14 so that the fuel runs out hardly occurs. . Since the fuel inflow hole 30 of the liquid collection cup 14 is located behind the suction part 31 in the side view of the vehicle body, the fuel in the liquid collection cup 14 during the rapid deceleration passes through the fuel inflow hole 3.
It is sucked out from the suction part 31 without flowing out from the zero.
【００２５】以上のように構成された燃料供給装置は、
燃料ポンプ１３の吸入部２８を燃料タンク１１の外部に
開設する一方、外部から燃料タンク１１の最低部に通じ
る吸出部３１を開設し、吸入部２８と吸出部３１との間
を外部管路３２で接続したものであるため、燃料ポンプ
１３が燃料タンク１１の最低部よりも高位置に設けられ
ているにも関わらず、常に燃料タンク１１の最低部から
燃料が吸い出されて燃料ポンプ１３に供給される。The fuel supply device configured as described above
The suction part 28 of the fuel pump 13 is opened outside the fuel tank 11, while the suction part 31 communicating from the outside to the lowest part of the fuel tank 11 is opened, and an external conduit 32 is provided between the suction part 28 and the suction part 31. Since the fuel pump 13 is provided at a position higher than the lowest part of the fuel tank 11, fuel is always drawn from the lowest part of the fuel tank 11 and is connected to the fuel pump 13. Supplied.
【００２６】このため、燃料タンク１１の無効残量を減
少させることができる。しかも、燃料ポンプ１３を何処
に設置しても良くなるため、燃料ポンプ１３の配置自由
度が増し、燃料タンク１１回りのデザイン性とレイアウ
ト性を飛躍的に向上させることができる。Therefore, the ineffective remaining amount of the fuel tank 11 can be reduced. In addition, since the fuel pump 13 can be installed anywhere, the degree of freedom of arrangement of the fuel pump 13 is increased, and the design and layout of the fuel tank 11 can be dramatically improved.
【００２７】また、車体フレーム２の前半部を構成する
左右一対のアッパーパイプ１６を跨ぐ形で燃料タンク１
１を設置するとともに、車両前後方向視で燃料ポンプ１
３を左右のアッパーパイプ１６の間に位置するように燃
料タンク１１の底面１１ｂに設置し、燃料ポンプ１３の
下部（ロアーハウジング２３）を燃料タンク１１の底面
１１ｂより下方に突出させ、この部分に吸入部２８を設
けたことから、アッパーパイプ１６に阻害されることな
く燃料ポンプ１３を低い高さで設置して燃料タンク１１
回りのデザイン性とレイアウト性を一層向上させること
ができる。The fuel tank 1 extends over a pair of left and right upper pipes 16 constituting the front half of the body frame 2.
1 and the fuel pump 1
3 is installed on the bottom surface 11 b of the fuel tank 11 so as to be located between the left and right upper pipes 16, and the lower part (lower housing 23) of the fuel pump 13 is projected downward from the bottom surface 11 b of the fuel tank 11. Since the suction portion 28 is provided, the fuel pump 13 is installed at a low height without being obstructed by the upper pipe 16 and the fuel tank 11
The surrounding design and layout can be further improved.
【００２８】しかも、燃料タンク１１にはアッパーパイ
プ１６の両側方に位置する一対のオーバーハング部１１
ａが形成されるため、燃料タンク１１の全高や全幅を大
きくすることなく燃料タンク１１の容量を拡大すること
ができ、これにより自動二輪車１のデザイン性、空力特
性、ライディング性等を大幅に向上させることができ
る。Further, the fuel tank 11 has a pair of overhang portions 11 located on both sides of the upper pipe 16.
Since a is formed, the capacity of the fuel tank 11 can be increased without increasing the overall height and width of the fuel tank 11, thereby greatly improving the design, aerodynamic characteristics, riding characteristics, etc. of the motorcycle 1. Can be done.
【００２９】さらに、燃料タンク１１の最後部を燃料タ
ンク１１の最も低い部分の一つとし、この部分の底面１
１ｃ上に集液カップ１４を設置し、この集液カップ１４
の底部から燃料タンク１１の外部に通じるように吸出部
３１を設けたので、燃料を安定的に供給し続けることが
できるとともに、燃料残量が少ない時に自動二輪車１が
急加速して燃料タンク１１内の燃料が後方に片寄って
も、片寄った燃料が集液カップ１４内に流れ込むので燃
料切れが防止される。Further, the last part of the fuel tank 11 is one of the lowest parts of the fuel tank 11, and the bottom 1
1c, a liquid collection cup 14 is set up.
The suction portion 31 is provided so as to communicate from the bottom of the fuel tank 11 to the outside of the fuel tank 11, so that the fuel can be stably supplied and when the remaining fuel amount is small, the motorcycle 1 rapidly accelerates and the fuel tank 11 Even if the fuel inside the fuel tank shifts rearward, the fuel that has shifted to the inside of the liquid collecting cup 14 is prevented from running out of fuel.
【００３０】また、車体側面視でアッパーパイプ１６を
燃料タンク１１の最後部よりも下方に配設し、この最後
部の底面１１ｃを略平面状にして集液カップ１４を設置
したため、燃料タンク１１最後部の高さをより低くして
集液カップ１４への燃料の流れを良くし、燃料残量が少
ない時における燃料切れを一段と有効に防止することが
できる。Further, the upper pipe 16 is disposed below the rearmost portion of the fuel tank 11 when viewed from the side of the vehicle body, and the bottom surface 11c of the rearmost portion is substantially flat, and the liquid collecting cup 14 is installed. By making the height of the rear end lower, the flow of fuel to the liquid collecting cup 14 is improved, and the running out of fuel when the remaining fuel amount is small can be more effectively prevented.
【００３１】ところで、車体側面視で前後輪６，９の略
中間位置は自動二輪車１の走行時における車体の上下揺
動量が最小になる場所であるが、この場所に集液カップ
１４を配置したため、集液カップ１４の揺動量を小さく
してその燃料保持性を向上させ、燃料残量が少ない時に
おける燃料切れをより一層効果的に防止することができ
る。By the way, the substantially middle position between the front and rear wheels 6 and 9 when viewed from the side of the vehicle body is a place where the vertical swing amount of the vehicle body during the running of the motorcycle 1 is minimized. In addition, the amount of swing of the liquid collecting cup 14 is reduced to improve the fuel retention, and it is possible to more effectively prevent running out of fuel when the remaining amount of fuel is small.
【００３２】図４は本発明に係る燃料供給装置の第２実
施形態を示す縦断面図である。この図において、アッパ
ーパイプ１６と燃料タンク１１と燃料ポンプ１３等の基
本構造は第１実施形態のものと同様であるため、各部に
は同一符号を付して説明を省略する。この第２実施形態
において、燃料タンク１１に設けられる吸出部３５は、
少なくとも左右片方（両方でもよい）のオーバーハング
部１１ａの最低部に設けられており、この吸出部３５と
燃料ポンプ１３の吸入部２８との間を接続する外部管路
３７が例えば左側のアッパーパイプ１６の下方をくぐる
ように配設されている。FIG. 4 is a longitudinal sectional view showing a second embodiment of the fuel supply device according to the present invention. In this figure, since the basic structure of the upper pipe 16, the fuel tank 11, the fuel pump 13 and the like is the same as that of the first embodiment, the same reference numerals are given to the respective parts, and the description is omitted. In the second embodiment, the suction portion 35 provided in the fuel tank 11 is
At least one of the left and right (or both) overhang portions 11a is provided at the lowest portion, and an external conduit 37 connecting between the suction portion 35 and the suction portion 28 of the fuel pump 13 is, for example, a left upper pipe. It is arranged so that it may pass under 16.
【００３３】こうした場合も、第１実施形態の場合と同
様に燃料ポンプ１３の配置場所が問われなくなるため、
燃料タンク１１回りのデザイン性とレイアウト性を向上
させるとともに、オーバーハング部１１ａを下方に延長
して燃料タンク１１の容量を拡大することができる。In this case as well, as in the case of the first embodiment, the location of the fuel pump 13 does not have to be determined.
The design and layout around the fuel tank 11 can be improved, and the capacity of the fuel tank 11 can be increased by extending the overhang portion 11a downward.
【００３４】[0034]
【発明の効果】以上説明したように、本発明に係る自動
二輪車の燃料供給装置は、燃料タンクの内部に設置した
燃料ポンプにより燃料タンク内の燃料をエンジン側に供
給するように構成された自動二輪車の燃料供給装置にお
いて、上記燃料ポンプの吸入部を燃料タンクの外部に開
設する一方、外部から燃料タンクの最低部に通じる吸出
部を燃料タンクの外部に開設して上記吸入部と吸出部と
の間を外部管路で接続したものであり、このように構成
すれば燃料タンクの無効残量を減少させるとともに燃料
タンク回りのデザイン性とレイアウト性を大きく向上さ
せることができる。As described above, the fuel supply system for a motorcycle according to the present invention is configured such that the fuel in the fuel tank is supplied to the engine side by the fuel pump installed inside the fuel tank. In the motorcycle fuel supply device, the suction portion of the fuel pump is opened outside the fuel tank, and the suction portion communicating from the outside to the lowest portion of the fuel tank is opened outside the fuel tank, and the suction portion and the suction portion are opened. Are connected by an external conduit. With such a configuration, the ineffective remaining amount of the fuel tank can be reduced, and the design and layout of the fuel tank can be greatly improved.
【図１】本発明に係る燃料供給装置が適用された自動二
輪車の一例を示す左側面図。FIG. 1 is a left side view showing an example of a motorcycle to which a fuel supply device according to the present invention is applied.
【図２】燃料供給装置を拡大した左側面図。FIG. 2 is an enlarged left side view of the fuel supply device.
【図３】本発明の第１実施形態を示すもので、（ａ）は
図２のＩＩＩａ−ＩＩＩａ線に沿う縦断面図、（ｂ）は
図２のＩＩＩｂ−ＩＩＩｂ線に沿う縦断面図。3A and 3B show a first embodiment of the present invention, in which FIG. 3A is a longitudinal sectional view along line IIIa-IIIa in FIG. 2, and FIG. 3B is a longitudinal sectional view along line IIIb-IIIb in FIG.
【図４】本発明の第２実施形態を示す縦断面図。FIG. 4 is a longitudinal sectional view showing a second embodiment of the present invention.
１ 自動二輪車 ２ 車体フレーム ３ エンジン ４ 燃料噴射装置 ６ 前輪 ８ 後輪 １１ 燃料タンク １１ａ オーバーハング部 １１ｂ，１１ｃ 燃料タンクの底面 １３ 燃料ポンプ １４ 集液カップ １６ 左右一対のフレーム構造材であるアッパーパイプ ２３ 燃料ポンプの下部をなすロアーハウジング ２８ 吸入部 ３０ 燃料流入穴 ３１，３５ 吸出部 ３２ 外部管路 DESCRIPTION OF SYMBOLS 1 Motorcycle 2 Body frame 3 Engine 4 Fuel injection device 6 Front wheel 8 Rear wheel 11 Fuel tank 11a Overhang part 11b, 11c Bottom of fuel tank 13 Fuel pump 14 Liquid collection cup 16 Upper pipe which is a pair of left and right frame structural members 23 Lower housing which forms the lower part of the fuel pump 28 Suction part 30 Fuel inlet hole 31, 35 Suction part 32 External pipeline
Claims (6)
により燃料タンク内の燃料をエンジン側に供給するよう
に構成された自動二輪車の燃料供給装置において、上記
燃料ポンプの吸入部を燃料タンクの外部に開設する一
方、外部から燃料タンクの最低部に通じる吸出部を燃料
タンクの外部に開設し、上記吸入部と吸出部との間を外
部管路で接続したことを特徴とする自動二輪車の燃料供
給装置。1. A motorcycle fuel supply device configured to supply fuel in a fuel tank to an engine side by a fuel pump installed inside the fuel tank, wherein a suction portion of the fuel pump is connected to an outside of the fuel tank. The fuel supply for a motorcycle is characterized in that a suction part communicating from the outside to the lowest part of the fuel tank is opened outside the fuel tank, and the suction part and the suction part are connected by an external conduit. Feeding device.
一対のフレーム構造材により構成されている場合に、前
記燃料タンクを上記フレーム構造材の上に跨設し、車両
前後方向視で前記燃料ポンプを左右のフレーム構造材の
間に位置するように燃料タンクの底面に設置するととも
に、燃料ポンプの下部を燃料タンクの底面より下方に突
出させ、この突出部に前記吸入部を設けた請求項１に記
載の自動二輪車の燃料供給装置。2. The motorcycle according to claim 1, wherein the front half of the body frame of the motorcycle is composed of a pair of left and right frame structural members. 2. A fuel pump according to claim 1, further comprising: a fuel pump disposed on a bottom surface of the fuel tank so as to be located between the left and right frame structural members; The fuel supply device for a motorcycle according to Claim 1.
最も低い部分の一つとし、この部分の底面上に上方に開
口する集液カップを設置し、この集液カップの底部から
燃料タンクの外部に通じるように前記吸出部を設けた請
求項１に記載の自動二輪車の燃料供給装置。3. The fuel tank has a rearmost part as one of the lowest parts of the fuel tank, and a liquid collecting cup which opens upward on a bottom surface of this part is provided. The motorcycle fuel supply device according to claim 1, wherein the suction portion is provided so as to communicate with the outside.
を燃料タンクの最後部よりも下方に配設し、この最後部
の底面を略平面状にして前記集液カップを設置した請求
項３に記載の自動二輪車の燃料供給装置。4. The liquid collection cup according to claim 3, wherein a pair of left and right frame structural members are disposed below a rearmost portion of the fuel tank when viewed from the side of the vehicle body, and the bottom surface of the rearmost portion is substantially flat. The fuel supply device for a motorcycle according to Claim 1.
略中間位置に配置した請求項３および請求項４に記載の
自動二輪車の燃料供給装置。5. The motorcycle fuel supply device according to claim 3, wherein the liquid collection cup is disposed at a substantially intermediate position between the front and rear wheels as viewed from the side of the vehicle body.
前記燃料タンクのオーバーハング部の少なくとも片方の
最低部に吸出部を設け、この吸出部と燃料ポンプの吸入
部との間を外部管路で接続し、上記外部管路をフレーム
構造材の下方にくぐらせた請求項１および請求項２に記
載の自動二輪車の燃料供給装置。6. A suction portion is provided at a lowest portion of at least one of the overhang portions of the fuel tank located on both sides of the frame structural member, and an external conduit is provided between the suction portion and a suction portion of the fuel pump. The fuel supply device for a motorcycle according to claim 1, wherein the fuel supply device is connected to the outer pipe under the frame structural material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001100514A JP3873646B2 (en) | 2001-03-30 | 2001-03-30 | Motorcycle fuel supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001100514A JP3873646B2 (en) | 2001-03-30 | 2001-03-30 | Motorcycle fuel supply system |
Related Child Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2004066264A Division JP3823975B2 (en) | 2004-03-09 | 2004-03-09 | Motorcycle fuel supply system |
| JP2005350762A Division JP4211778B2 (en) | 2005-12-05 | 2005-12-05 | Motorcycle fuel supply system |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2002293281A true JP2002293281A (en) | 2002-10-09 |
| JP2002293281A5 JP2002293281A5 (en) | 2005-02-17 |
| JP3873646B2 JP3873646B2 (en) | 2007-01-24 |
Family
ID=18953952
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001100514A Expired - Lifetime JP3873646B2 (en) | 2001-03-30 | 2001-03-30 | Motorcycle fuel supply system |
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| Country | Link |
|---|---|
| JP (1) | JP3873646B2 (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004072469A1 (en) * | 2003-02-17 | 2004-08-26 | Yamaha Hatsudoki Kabushiki Kaisha | Fuel-feeding device for two-wheeled motor vehicle |
| WO2005014382A1 (en) * | 2003-08-06 | 2005-02-17 | Yamaha Hatsudoki Kabushiki Kaisha | Fuel tank of motorcycle and motorcycle |
| EP1787900A1 (en) | 2005-11-17 | 2007-05-23 | Keihin Corporation | Fuel supply unit in fuel tank for motorcycle |
| CN100362231C (en) * | 2004-04-02 | 2008-01-16 | 雅马哈发动机株式会社 | Fuel filter for vehicle engine and its mounting structure and mounting method |
| US7401597B2 (en) | 2005-10-20 | 2008-07-22 | Yamaha Hatsudoki Kabushiki Kaisha | Fuel supply device for motorcycle and motorcycle |
| US7614468B2 (en) | 2005-11-08 | 2009-11-10 | Yamaha Hatsudoki Kabushiki Kaisha | Straddle-type vehicle |
| EP2570647A1 (en) * | 2004-02-06 | 2013-03-20 | Honda Motor Co., Ltd. | A fuel injection system for a saddle ride type four-wheel vehicle |
| JP2013144535A (en) * | 2011-12-15 | 2013-07-25 | Honda Motor Co Ltd | Saddle-ride type vehicle |
| CN105579336A (en) * | 2013-10-03 | 2016-05-11 | 川崎重工业株式会社 | Two-wheeled motor vehicle with supercharger |
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| JPH02128977A (en) * | 1988-11-09 | 1990-05-17 | Yamaha Motor Co Ltd | Suction gas lead in device of motorcycle |
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| JP2000238680A (en) * | 1999-02-22 | 2000-09-05 | Suzuki Motor Corp | Fuel pump device for motor-cycle |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004072469A1 (en) * | 2003-02-17 | 2004-08-26 | Yamaha Hatsudoki Kabushiki Kaisha | Fuel-feeding device for two-wheeled motor vehicle |
| WO2005014382A1 (en) * | 2003-08-06 | 2005-02-17 | Yamaha Hatsudoki Kabushiki Kaisha | Fuel tank of motorcycle and motorcycle |
| CN100427352C (en) * | 2003-08-06 | 2008-10-22 | 雅马哈发动机株式会社 | Fuel tank of motorcycle and motorcycle |
| EP2570647A1 (en) * | 2004-02-06 | 2013-03-20 | Honda Motor Co., Ltd. | A fuel injection system for a saddle ride type four-wheel vehicle |
| CN100362231C (en) * | 2004-04-02 | 2008-01-16 | 雅马哈发动机株式会社 | Fuel filter for vehicle engine and its mounting structure and mounting method |
| US7401597B2 (en) | 2005-10-20 | 2008-07-22 | Yamaha Hatsudoki Kabushiki Kaisha | Fuel supply device for motorcycle and motorcycle |
| US7614468B2 (en) | 2005-11-08 | 2009-11-10 | Yamaha Hatsudoki Kabushiki Kaisha | Straddle-type vehicle |
| EP1787900A1 (en) | 2005-11-17 | 2007-05-23 | Keihin Corporation | Fuel supply unit in fuel tank for motorcycle |
| JP2013144535A (en) * | 2011-12-15 | 2013-07-25 | Honda Motor Co Ltd | Saddle-ride type vehicle |
| CN105579336A (en) * | 2013-10-03 | 2016-05-11 | 川崎重工业株式会社 | Two-wheeled motor vehicle with supercharger |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3873646B2 (en) | 2007-01-24 |
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