JP6995637B2 - Fuel tank - Google Patents

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JP6995637B2
JP6995637B2 JP2018004601A JP2018004601A JP6995637B2 JP 6995637 B2 JP6995637 B2 JP 6995637B2 JP 2018004601 A JP2018004601 A JP 2018004601A JP 2018004601 A JP2018004601 A JP 2018004601A JP 6995637 B2 JP6995637 B2 JP 6995637B2
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protector
insulating member
heat insulating
fuel
tank
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JP2019123340A (en
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佳史 後藤
大吾 小澤
卓也 田所
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Toyota Motor Corp
FTS Co Ltd
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FTS Co Ltd
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本発明は、燃料タンクに関するものである。 The present invention relates to a fuel tank.

燃料タンクとして、排気管等の高温となる放熱性部材との干渉回避のために下面中央部に底上げ部が形成された鞍型のものがある。この鞍型燃料タンク内には、底上げ部を挟んで左右に区画された第１貯留部と第２貯留部が形成されており、第１貯留部と第２貯留部の上端同士が連通している。給油時には、燃料が第１貯留部に向けて流入され、第１貯留部に流入した燃料の一部は、底上げ部を乗り越えて第２貯留部へ流入し、満タン状態となる。また、第１貯留部に燃料ポンプが取り付けられる場合、燃料消費の際には、燃料ポンプに設けられているジェットポンプにより第２貯留部内の燃料が先に使用されるようになっている。そのため、タンク内の燃料が少なくなった場合、第１貯留部のみに燃料が貯留されて、第２貯留部が空となるため、放熱性部材が発する熱の影響により、空になった第２貯留部の温度が高くなり易い。 As a fuel tank, there is a saddle-shaped fuel tank in which a raised portion is formed in the center of the lower surface in order to avoid interference with a heat-dissipating member that becomes hot, such as an exhaust pipe. In this saddle-shaped fuel tank, a first storage portion and a second storage portion are formed on the left and right sides of the bottom raising portion, and the upper ends of the first storage portion and the second storage portion communicate with each other. There is. At the time of refueling, the fuel flows toward the first storage section, and a part of the fuel that has flowed into the first storage section passes over the bottom raising section and flows into the second storage section, and becomes full. Further, when the fuel pump is attached to the first storage unit, the fuel in the second storage unit is used first by the jet pump provided in the fuel pump when the fuel is consumed. Therefore, when the amount of fuel in the tank is low, the fuel is stored only in the first storage section and the second storage section becomes empty. Therefore, the second storage section becomes empty due to the influence of the heat generated by the heat radiating member. The temperature of the reservoir tends to rise.

このような場合における第２貯留部の昇温を抑制可能な手段として、特許文献１には、燃料タンクの外面を断熱部材で覆うとともに、この断熱部材の外面をプロテクタで覆い、放熱性部材から第２貯留部への輻射熱を断熱部材とプロテクタによって遮断する技術が開示されている。プロテクタは、断熱部材を支える機能と、断熱部材を雨水や飛び石等から保護する機能とを兼ね備えている。 As a means capable of suppressing the temperature rise of the second storage portion in such a case, Patent Document 1 describes that the outer surface of the fuel tank is covered with a heat insulating member, and the outer surface of the heat insulating member is covered with a protector from the heat radiating member. A technique for blocking radiant heat to the second storage portion by a heat insulating member and a protector is disclosed. The protector has both a function of supporting the heat insulating member and a function of protecting the heat insulating member from rainwater, stepping stones, and the like.

特開２０１７－０８８０５９号公報Japanese Unexamined Patent Publication No. 2017-088059

上記のプロテクタは合成樹脂製であるため、放熱性部材の温度がプロテクタの耐熱温度を上回ると、プロテクタが熱変形してしまう虞がある。プロテクタが熱変形すると、断熱部材を保護する機能と断熱部材を支える機能が損なわれることが懸念される。 Since the protector is made of synthetic resin, if the temperature of the heat-dissipating member exceeds the heat-resistant temperature of the protector, the protector may be thermally deformed. When the protector is thermally deformed, there is a concern that the function of protecting the heat insulating member and the function of supporting the heat insulating member are impaired.

本発明は上記のような事情に基づいて完成されたものであって、断熱部材を覆うプロテクタの信頼性低下を防止することを目的とする。 The present invention has been completed based on the above circumstances, and an object of the present invention is to prevent a decrease in reliability of a protector that covers a heat insulating member.

第１の発明は、
燃料を貯留するタンク本体と、
前記タンク本体の外面を覆う断熱部材と、
耐火性を有する材料からなり、前記断熱部材の外面を覆う状態で前記タンク本体に取り付けられたプロテクタとを備え、前記プロテクタの外面にヒートシンクが形成されているところに特徴を有する。
第２の発明は、
燃料を貯留するタンク本体と、
前記タンク本体の外面を覆う断熱部材と、
耐火性を有する材料からなり、前記断熱部材の外面を覆う状態で前記タンク本体に取り付けられたプロテクタとを備え、
前記プロテクタには、前記プロテクタの内面を凹ませた形態であって、前記断熱部材との間に通気室を形成する複数の凹部が形成され、
前記通気室は、前後方向に延びており、
前記通気室内では、空気の流動が可能であるところに特徴を有する。
尚、本発明の「耐火性を有する材料」は、排気管のうち燃料タンク近傍の部位がエンジン駆動中に高温（４００～５００℃）になること、さらに第２貯留部が空の状態において車両火災時に燃料タンクを火炎（７００～８００℃）から保護する必要があることを勘案し、引張り強度が急激に低下する温度（つまり、材料が急激に軟化する温度）が火炎の温度（７００～８００℃）を上回る材料と定義する。
 The first invention is
The tank body that stores fuel and
A heat insulating member that covers the outer surface of the tank body,
It is made of a material having fire resistance, is provided with a protector attached to the tank body in a state of covering the outer surface of the heat insulating member, and is characterized in that a heat sink is formed on the outer surface of the protector .
The second invention is
The tank body that stores fuel and
A heat insulating member that covers the outer surface of the tank body,
It is made of a fire resistant material and is provided with a protector attached to the tank body so as to cover the outer surface of the heat insulating member.
The protector has a form in which the inner surface of the protector is recessed, and a plurality of recesses forming a ventilation chamber are formed between the protector and the heat insulating member.
The ventilation chamber extends in the front-rear direction and
The ventilation chamber is characterized in that air can flow.
In the "material having fire resistance" of the present invention, the portion of the exhaust pipe near the fuel tank becomes high temperature (400 to 500 ° C.) while the engine is being driven, and the vehicle is in a state where the second storage portion is empty. Considering that it is necessary to protect the fuel tank from the flame (700 to 800 ° C) in the event of a fire, the temperature at which the tensile strength drops sharply (that is, the temperature at which the material softens sharply) is the temperature of the flame (700 to 800). It is defined as a material that exceeds ℃).

排気管等の放熱性部材が高温になったり、タンク本体の近傍で車両火災が発生したりした場合でも、耐火性を有するプロテクタは熱変形する虞がないので、プロテクタの機能の信頼性が保たれる。また、第１の発明によれば、プロテクタに伝わった熱はヒートシンクから大気中へ放出されるので、プロテクタの温度上昇を抑制することができる。第２の発明によれば、プロテクタの内面と断熱部材の外面との接触面積が小さくなるので、プロテクタが高温になっても、プロテクタから断熱部材への熱伝達が抑制される。
Even if the heat-dissipating member such as the exhaust pipe becomes hot or a vehicle fire occurs near the tank body, the fire-resistant protector does not have the risk of thermal deformation, so the reliability of the protector's function is maintained. Dripping. Further, according to the first invention, since the heat transferred to the protector is released from the heat sink into the atmosphere, it is possible to suppress the temperature rise of the protector. According to the second invention, since the contact area between the inner surface of the protector and the outer surface of the heat insulating member is small, heat transfer from the protector to the heat insulating member is suppressed even if the protector becomes hot.

実施例１の燃料タンクの正断面図Regular cross-sectional view of the fuel tank of Example 1 プロテクタのヒートシンクを省略した燃料タンクの底面図Bottom view of the fuel tank without the heat sink of the protector

＜実施例１＞
以下、本発明を具体化した実施例１を図１～図２を参照して説明する。尚、以下の説明において、上下の方向については、図１にあらわれる向きを、そのまま上方、下方と定義し、左右の方向についても、図１，２にあらわれる向きを、そのまま左方、右方と定義する。 <Example 1>
Hereinafter, Example 1 embodying the present invention will be described with reference to FIGS. 1 and 2. In the following description, the vertical direction is defined as upward and downward as it is in FIG. 1, and the left and right directions as shown in FIGS. 1 and 2 are defined as left and right as they are. Define.

本実施例１の燃料タンク１０は、合成樹脂製のタンク本体１１と、断熱部材１８と、プロテクタ２０とを備えて構成されている。タンク本体１１は、ガソリン等の燃料Ｆを貯留するものであり、全体として前後寸法及び幅寸法（左右寸法）に対して高さ寸法が比較的小さい偏平な形状をなす。 The fuel tank 10 of the first embodiment includes a tank body 11 made of synthetic resin, a heat insulating member 18, and a protector 20. The tank body 11 stores fuel F such as gasoline, and has a flat shape having a relatively small height dimension with respect to the front-rear dimension and the width dimension (left-right dimension) as a whole.

タンク本体１１の底面には、その幅方向（左右方向）における中央部を凹ませた形態の底上げ部１２が形成されている。底上げ部１２は、プロペラシャフトＰ及び高温となる排気管Ｅ（放熱性部材）との干渉回避のために設けられた部位である。底上げ部１２を形成したことにより、タンク本体１１の内部は、底上げ部１２より左側の第１貯留部１３と底上げ部１２より右側の第２貯留部１４とに区画されている。第１貯留部１３と第２貯留部１４は、その上端部側領域において互いに連通している。 On the bottom surface of the tank body 11, a bottom raising portion 12 having a recessed central portion in the width direction (left-right direction) is formed. The bottom raising portion 12 is a portion provided for avoiding interference with the propeller shaft P and the exhaust pipe E (heat radiating member) that becomes hot. By forming the bottom raising portion 12, the inside of the tank main body 11 is divided into a first storage portion 13 on the left side of the bottom raising portion 12 and a second storage portion 14 on the right side of the bottom raising portion 12. The first storage unit 13 and the second storage unit 14 communicate with each other in the upper end side region thereof.

第１貯留部１３の底面と第２貯留部１４の底面には、タンクバンド１６を左右方向に位置決めするための手段として前後方向の位置決め溝１５が形成されている。燃料タンク１０は、位置決め溝１５に沿わせた左右一対のタンクバンド１６によって車体Ｂの床下に吊り下げられた状態で取り付けられている。第２貯留部１４に取り付けられたタンクバンド１６のうち位置決め溝１５に嵌合した部分には、プロテクタ２０をタンク本体１１に固定する手段として、下向きに突出するスタッドボルト１７が固着されている。 A positioning groove 15 in the front-rear direction is formed on the bottom surface of the first storage unit 13 and the bottom surface of the second storage unit 14 as a means for positioning the tank band 16 in the left-right direction. The fuel tank 10 is attached in a state of being suspended under the floor of the vehicle body B by a pair of left and right tank bands 16 along the positioning groove 15. A stud bolt 17 projecting downward is fixed to a portion of the tank band 16 attached to the second storage portion 14 that is fitted into the positioning groove 15 as a means for fixing the protector 20 to the tank body 11.

燃料タンク１０に給油する際には、燃料Ｆが第１貯留部１３に向けて流入され、第１貯留部１３に流入した燃料Ｆの一部が、底上げ部１２を乗り越えて第２貯留部１４へ流入し、満タン状態となる。また、燃料消費の際には、第１貯留部１３に取り付けた燃料ポンプ（図示省略）に設けられているジェットポンプにより、第２貯留部１４内の燃料Ｆが先に使用されるようになっているため、タンク本体１１内の燃料Ｆが少なくなると、第２貯留部１４が殆ど空になる。この状態で車両火災が発生した場合、火炎が第２貯留部１４に直接当たると、第２貯留部１４（タンク本体１０）が溶融してしまうことになる。そこで、火炎が第２貯留部１４に直接曝されることを防止する手段として、プロテクタ２０で第２貯留部１４を覆っている。また、タンク本体１１は車体Ｂの床下に設けられているため、走行中に飛び石等の異物が第２貯留部１４の底面１６Ｒと右外側面１９Ｒに衝突することが懸念されるが、プロテクタ２０は、第２貯留部１４への異物の干渉を抑制する手段としても機能する。 When refueling the fuel tank 10, the fuel F flows toward the first storage unit 13, and a part of the fuel F that has flowed into the first storage unit 13 gets over the bottom raising unit 12 and goes over the bottom raising unit 12 to the second storage unit 14. It flows into the tank and becomes full. Further, when fuel is consumed, the fuel F in the second storage unit 14 is used first by the jet pump provided in the fuel pump (not shown) attached to the first storage unit 13. Therefore, when the fuel F in the tank main body 11 becomes low, the second storage portion 14 becomes almost empty. When a vehicle fire occurs in this state, if the flame directly hits the second storage unit 14, the second storage unit 14 (tank main body 10) will melt. Therefore, as a means for preventing the flame from being directly exposed to the second storage portion 14, the protector 20 covers the second storage portion 14. Further, since the tank body 11 is provided under the floor of the vehicle body B, there is a concern that foreign matter such as stepping stones may collide with the bottom surface 16R of the second storage unit 14 and the right outer surface 19R during traveling, but the protector 20 Also functions as a means for suppressing the interference of foreign matter with the second storage unit 14.

断熱部材１８は、例えば発泡性の合成樹脂材料からなる湾曲した板材であり、第２貯留部１４の底面と左右両外側面とを覆うように配置されている。断熱部材１８の内面（上面）はタンク本体１１（第２貯留部１４）の外面に対し接触又は僅かに隙間を空けて対向した状態となっている。断熱部材１８は、断熱部材１８の外部（第２貯留部１４の下方）からの輻射熱が第２貯留部１４に伝わることを抑制するとともに、断熱部材１８の外面に伝達された熱が第２貯留部１４に伝わることを抑制する。断熱部材１８には、スタッドボルト１７との干渉を回避するための連通孔１９が形成されている。 The heat insulating member 18 is a curved plate material made of, for example, a foamable synthetic resin material, and is arranged so as to cover the bottom surface of the second storage portion 14 and both the left and right outer surfaces. The inner surface (upper surface) of the heat insulating member 18 is in contact with or facing the outer surface of the tank body 11 (second storage portion 14) with a slight gap. The heat insulating member 18 suppresses the transfer of radiant heat from the outside of the heat insulating member 18 (below the second storage unit 14) to the second storage unit 14, and the heat transferred to the outer surface of the heat insulating member 18 is stored in the second storage unit 18. Suppresses transmission to part 14. The heat insulating member 18 is formed with a communication hole 19 for avoiding interference with the stud bolt 17.

プロテクタ２０は、耐火性を有する金属材料（例えば、鉄、ステンレス鋼等）からなる板材である。本実施例における「耐火性を有する材料」は、排気管Ｅのうち燃料タンク１０の近傍の部位がエンジン駆動中に高温（４００～５００℃）になること、さらに第２貯留部１４が空の状態において車両火災時に燃料タンク１０を火炎（７００～８００℃）から保護する必要があることを勘案し、引張り強度が急激に低下する温度（つまり、材料が急激に軟化する温度）が火炎の温度（７００～８００℃）を上回る材料と定義する。プロテクタ２０は、断熱部材１８の外面に沿うように湾曲した形状である。 The protector 20 is a plate material made of a metal material having fire resistance (for example, iron, stainless steel, etc.). In the "material having fire resistance" in this embodiment, the portion of the exhaust pipe E near the fuel tank 10 becomes hot (400 to 500 ° C.) while the engine is being driven, and the second storage portion 14 is empty. Considering that it is necessary to protect the fuel tank 10 from the flame (700 to 800 ° C.) in the event of a vehicle fire in the state, the temperature at which the tensile strength drops sharply (that is, the temperature at which the material suddenly softens) is the temperature of the flame. It is defined as a material exceeding (700 to 800 ° C.). The protector 20 has a curved shape along the outer surface of the heat insulating member 18.

プロテクタ２０の幅方向中央部には、上下方向に貫通する取付孔２１が形成されている。取付孔２１はスタッドボルト１７に嵌合され、プロテクタ２０の下方からスタッドボルト１７に螺合したナット２２が締め付けられている。このスタッドボルト１７とナット２２により、プロテクタ２０がタンク本体１１（第２貯留部１４）に固定されている。タンク本体１１に取り付けられたプロテクタ２０は、断熱部材１８の外面の全領域を殆ど隙間なく覆っている。これにより、プロテクタ２０は、断熱部材１８をタンク本体１１から離脱しないように支える機能と、断熱部材１８を雨水や飛び石等から保護する機能とを発揮する。 A mounting hole 21 penetrating in the vertical direction is formed in the central portion of the protector 20 in the width direction. The mounting hole 21 is fitted to the stud bolt 17, and the nut 22 screwed into the stud bolt 17 is tightened from below the protector 20. The protector 20 is fixed to the tank body 11 (second storage portion 14) by the stud bolt 17 and the nut 22. The protector 20 attached to the tank body 11 covers the entire outer surface of the heat insulating member 18 with almost no gap. As a result, the protector 20 exerts a function of supporting the heat insulating member 18 so as not to be separated from the tank main body 11 and a function of protecting the heat insulating member 18 from rainwater, stepping stones, and the like.

プロテクタ２０には、その内面を凹ませた形態の複数の凹部２３が形成されている。プロテクタ２０の内面のうち凹部２３が形成されている領域には、断熱部材１８の外面との間に通気室２４が形成されている。通気室２４は前後方向に延びていて、通気室２４の前後両端は大気中に開放されている。したがって、車両の走行中は、通気室２４内を空気が流動するようになっている。 The protector 20 is formed with a plurality of recesses 23 having a concave inner surface thereof. A ventilation chamber 24 is formed between the inner surface of the protector 20 and the outer surface of the heat insulating member 18 in the region where the recess 23 is formed. The ventilation chamber 24 extends in the front-rear direction, and both front and rear ends of the ventilation chamber 24 are open to the atmosphere. Therefore, while the vehicle is traveling, air flows in the ventilation chamber 24.

プロテクタ２０の外面には、ヒートシンク２５が一体に形成されている。ヒートシンク２５は、プロテクタ２０の外面から突出する複数の放熱リブ２６から構成されている。放熱リブ２６は、前後方向に沿って延びている。したがって、車両の走行中は、放熱リブ２６の側面に沿って空気が流動し、放熱リブ２６の熱が奪われるようになっている。 A heat sink 25 is integrally formed on the outer surface of the protector 20. The heat sink 25 is composed of a plurality of heat radiating ribs 26 projecting from the outer surface of the protector 20. The heat radiating rib 26 extends in the front-rear direction. Therefore, while the vehicle is traveling, air flows along the side surface of the heat radiating rib 26, and the heat of the heat radiating rib 26 is taken away.

また、プロテクタ２０の底面及び右側面との対向する領域には、車体Ｂの床下に固定された空力カバーＡが配置されている。空力カバーＡは、第２貯留部１４の底面及び右側面に対して比較的接近して配置されているが、空力カバーＡと第２貯留部１４との間に配置されているのは断熱部材１８とプロテクタ２０だけなので、プロテクタ２０と空力カバーＡが干渉する虞はない。 Further, an aerodynamic cover A fixed under the floor of the vehicle body B is arranged in a region facing the bottom surface and the right side surface of the protector 20. The aerodynamic cover A is arranged relatively close to the bottom surface and the right side surface of the second storage portion 14, but the heat insulating member is arranged between the aerodynamic cover A and the second storage portion 14. Since only 18 and the protector 20, there is no possibility that the protector 20 and the aerodynamic cover A interfere with each other.

本実施例１の燃料タンク１０は、燃料Ｆを貯留するタンク本体１１と、タンク本体１１の外面を覆う断熱部材１８と、耐火性を有する材料からなり、断熱部材１８の外面を覆う状態でタンク本体１１に取り付けられたプロテクタ２０とを備えている。この構成によれば、排気管Ｅが高温になっても、耐火性を有するプロテクタ２０は熱変形する虞がない。これにより、プロテクタ２０の機能の信頼性が保たれるので、断熱部材１８はタンク本体１１に取り付けた状態に確実に保持されるとともに、排気管Ｅから断熱部材１８への熱輻射が確実に防止される。 The fuel tank 10 of the first embodiment is made of a tank main body 11 for storing fuel F, a heat insulating member 18 for covering the outer surface of the tank main body 11, and a material having fire resistance, and the tank is in a state of covering the outer surface of the heat insulating member 18. It is provided with a protector 20 attached to the main body 11. According to this configuration, even if the exhaust pipe E becomes hot, there is no possibility that the protector 20 having fire resistance is thermally deformed. As a result, the reliability of the function of the protector 20 is maintained, so that the heat insulating member 18 is surely held in a state of being attached to the tank body 11, and heat radiation from the exhaust pipe E to the heat insulating member 18 is surely prevented. Will be done.

また、プロテクタ２０の内面には、断熱部材１８の外面との間に通気室２４を形成する凹部２３が形成されている。プロテクタ２０の内面と断熱部材１８の外面との間に通気室２４が介在することにより、プロテクタ２０が高温になっても、通気室２４内を流動する空気により、プロテクタ２０が冷却される。また、プロテクタ２０の内面から断熱部材１８の外面への熱伝達が抑制される。しかも、プロテクタ２０の内面に凹部２３を形成したことで、プロテクタ２０の内面と断熱部材１８の外面との接触面積が小さくなっている。このように、通気室２４の存在と接触面積を小さくすることにより熱抵抗が大きくなっているので、プロテクタ２０が高温になっても、プロテクタ２０から断熱部材１８への熱伝達が効果的に抑制される。 Further, on the inner surface of the protector 20, a recess 23 forming a ventilation chamber 24 is formed between the inner surface and the outer surface of the heat insulating member 18. By interposing the ventilation chamber 24 between the inner surface of the protector 20 and the outer surface of the heat insulating member 18, even if the temperature of the protector 20 becomes high, the protector 20 is cooled by the air flowing in the ventilation chamber 24. Further, heat transfer from the inner surface of the protector 20 to the outer surface of the heat insulating member 18 is suppressed. Moreover, since the recess 23 is formed on the inner surface of the protector 20, the contact area between the inner surface of the protector 20 and the outer surface of the heat insulating member 18 is reduced. As described above, since the thermal resistance is increased by reducing the presence and contact area of the ventilation chamber 24, heat transfer from the protector 20 to the heat insulating member 18 is effectively suppressed even if the protector 20 becomes hot. Will be done.

また、プロテクタ２０の外面にはヒートシンク２５が形成されているので、排気管Ｅからの輻射熱がプロテクタ２０に伝わっても、プロテクタ２０に伝わった熱はヒートシンク２５から大気中へ放出される。これにより、プロテクタ２０の温度上昇を抑制し、ひいては、プロテクタ２０から断熱部材１８への熱伝達を抑制することができる。 Further, since the heat sink 25 is formed on the outer surface of the protector 20, even if the radiant heat from the exhaust pipe E is transmitted to the protector 20, the heat transmitted to the protector 20 is released from the heat sink 25 to the atmosphere. As a result, the temperature rise of the protector 20 can be suppressed, and by extension, the heat transfer from the protector 20 to the heat insulating member 18 can be suppressed.

＜他の実施例＞
本発明は上記記述及び図面によって説明した実施例に限定されるものではなく、例えば次のような実施例も本発明の技術的範囲に含まれる。
（１）上記実施例では、プロテクタの内面に通気室を形成するための凹部を形成したが、プロテクタは凹部を有しない形態であってもよい。
（２）上記実施例では、プロテクタの外面にヒートシンクを形成したが、プロテクタは、ヒートシンクを有しない形態であってもよい。
（３）上記実施例では、プロテクタがタンクバンドを介してタンク本体に取り付けられているが、プロテクタは、タンクバンドを介さずにタンク本体に直接取り付けられていてもよい。
（４）上記実施例では、タンク本体が２つの貯留部に区画された鞍型の燃料タンクについて説明したが、本発明は鞍型以外の燃料タンクにも適用できる。 <Other Examples>
The present invention is not limited to the examples described in the above description and drawings, and for example, the following examples are also included in the technical scope of the present invention.
(1) In the above embodiment, a recess for forming a ventilation chamber is formed on the inner surface of the protector, but the protector may have no recess.
(2) In the above embodiment, the heat sink is formed on the outer surface of the protector, but the protector may have no heat sink.
(3) In the above embodiment, the protector is attached to the tank body via the tank band, but the protector may be directly attached to the tank body without passing through the tank band.
(4) In the above embodiment, a saddle-shaped fuel tank in which the tank body is divided into two storage portions has been described, but the present invention can be applied to fuel tanks other than the saddle-shaped fuel tank.

１０…燃料タンク
１１…タンク本体
１８…断熱部材
２０…プロテクタ
２３…凹部
２４…通気室
２５…ヒートシンク
Ｆ…燃料 10 ... Fuel tank 11 ... Tank body 18 ... Insulation member 20 ... Protector 23 ... Recess 24 ... Ventilation chamber 25 ... Heat sink F ... Fuel

Claims (2)

燃料を貯留するタンク本体と、
前記タンク本体の外面を覆う断熱部材と、
耐火性を有する材料からなり、前記断熱部材の外面を覆う状態で前記タンク本体に取り付けられたプロテクタとを備え、
前記プロテクタの外面にヒートシンクが形成されていることを特徴とする燃料タンク。 The tank body that stores fuel and
A heat insulating member that covers the outer surface of the tank body,
It is made of a fire resistant material and is provided with a protector attached to the tank body so as to cover the outer surface of the heat insulating member.
A fuel tank characterized in that a heat sink is formed on the outer surface of the protector . 燃料を貯留するタンク本体と、
前記タンク本体の外面を覆う断熱部材と、
耐火性を有する材料からなり、前記断熱部材の外面を覆う状態で前記タンク本体に取り付けられたプロテクタとを備え、
前記プロテクタには、前記プロテクタの内面を凹ませた形態であって、前記断熱部材との間に通気室を形成する複数の凹部が形成され、
前記通気室は、前後方向に延びており、
前記通気室内では、空気の流動が可能であることを特徴とする燃料タンク。 The tank body that stores fuel and
A heat insulating member that covers the outer surface of the tank body,
It is made of a fire resistant material and is provided with a protector attached to the tank body so as to cover the outer surface of the heat insulating member.
The protector has a form in which the inner surface of the protector is recessed, and a plurality of recesses forming a ventilation chamber are formed between the protector and the heat insulating member .
The ventilation chamber extends in the front-rear direction and
A fuel tank characterized in that air can flow in the ventilation chamber .
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US5011743A (en) 1990-01-22 1991-04-30 Atd Corporation Pad including heat sink and thermal insulation areas
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JP2001246946A (en) 2000-03-08 2001-09-11 Toyota Motor Corp Fuel tank
JP2003285393A (en) 2002-03-28 2003-10-07 Toyoda Gosei Co Ltd Tank protector
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JPH04106014U (en) * 1991-02-27 1992-09-11 本田技研工業株式会社 vehicle fuel tank
JP2561025Y2 (en) * 1992-12-04 1998-01-28 本田技研工業株式会社 Insulation cover structure for automotive fuel tank
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5011743A (en) 1990-01-22 1991-04-30 Atd Corporation Pad including heat sink and thermal insulation areas
JP2001130270A (en) 1999-11-01 2001-05-15 Toyota Motor Corp Fuel tank
JP2001246946A (en) 2000-03-08 2001-09-11 Toyota Motor Corp Fuel tank
JP2003285393A (en) 2002-03-28 2003-10-07 Toyoda Gosei Co Ltd Tank protector
JP4106014B2 (en) 2002-12-18 2008-06-25 インターナショナル・ビジネス・マシーンズ・コーポレーション Communication method and program in multi-node data processing system including at least one non-volatile data storage device
CN205439969U (en) 2015-12-28 2016-08-10 左享兰 Car oil tank with thermal -insulated fire prevention of shock attenuation and automatic fire extinguishing

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