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JP2010012959A - Fuel gas detection device for vehicle - Google Patents

Fuel gas detection device for vehicle Download PDF

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Publication number
JP2010012959A
JP2010012959A JP2008175254A JP2008175254A JP2010012959A JP 2010012959 A JP2010012959 A JP 2010012959A JP 2008175254 A JP2008175254 A JP 2008175254A JP 2008175254 A JP2008175254 A JP 2008175254A JP 2010012959 A JP2010012959 A JP 2010012959A
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fuel gas
vehicle
floor panel
gas detection
fuel
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Kunihiro Hirose
邦弘 広瀬
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Suzuki Motor Corp
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Suzuki Motor Corp
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    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/50—Fuel cells

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  • Fuel Cell (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
  • Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To easily perform maintenance including replacement of a fuel gas detection means itself, to enhance reliability of a fuel gas detection means, and to attain highly accurate detection of the leaked fuel gas in a fuel gas detection device for a vehicle. <P>SOLUTION: The fuel gas detection device for the vehicle is provided with a fuel cell system having a fuel cell mounted on the vehicle and a fuel gas tank for feeding the fuel gas to the fuel cell, and is provided with the fuel gas detection means for detecting the fuel gas leaked from the fuel cell system. The fuel gas tank is mounted/fixed to a lower surface of a floor panel of the vehicle from a lower side, a hole is provided a portion near the fuel gas tank of the floor panel fixed with the fuel gas tank, and the fuel gas detection means is mounted to an upper surface of the floor panel provided with the hole from an upper side. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

この発明は車両用燃料ガス検出装置に係り、特に、燃料ガス検出手段自体の交換を含めたメンテナンスを容易に行うことが可能で、燃料ガス検出手段の信頼性を高め、漏洩した燃料ガスの精度の高い検出が可能な車両用燃料ガス検出装置に関する。   The present invention relates to a fuel gas detection device for a vehicle, and in particular, maintenance including replacement of the fuel gas detection means itself can be easily performed, the reliability of the fuel gas detection means is improved, and the accuracy of leaked fuel gas is improved. The present invention relates to a vehicular fuel gas detection device capable of detecting a high level of noise.

燃料電池システムを設けた車両においては、燃料ガスタンクまたは燃料ガス用配管等から燃料ガスが漏れた場合を考慮して、燃料ガスの漏れを検出可能な車両用燃料ガス検出装置を設けている。車両用燃料ガス検出装置には、図５に示すものがある。図５において、１０１は車両、１０２はフロアパネル、１０３は車室、１０４は収納空間である。車両１０１は、車両後部のフロアパネル１０２の上側に車室１０３を設け、下側に後述する燃料ガスタンク１０６・１０７の収納空間１０４を設けている。
車両１０１の燃料電池システム１０５は、車両前部のフロントルームに燃料電池を搭載し、車両後部のフロアパネル１０２の下側の収納空間１０４に２つの燃料ガスタンク１０６・１０７を収納し、燃料ガスタンク１０６・１０７をフロアパネル１０２の下面１０８に下側から取り付け固定している。燃料電池システム１０５は、燃料ガスタンク１０６・１０７から燃料ガスである水素ガスを燃料ガス用配管により燃料電池に供給し、電気を発生する。
前記車両１０１は、燃料電池システム１０５から漏洩した燃料ガスを検出する車両用燃料ガス検出装置１０９を設けている。車両用燃料ガス検出装置１０９は、燃料ガスを検出する燃料ガス検出手段であるガスセンサ１１０を備えている。ガスセンサ１１０は、本体１１１に検知部位１１２を設け、本体１１１を燃料ガスタンク１０６・１０７の上方のフロアパネル１０２の下面１０８に下側から取り付けている。車両用燃料ガス検出装置１０９は、ガスセンサ１１０の検知部位１１２により燃料ガスである水素ガスの漏洩を検出すると、例えば、警報を発し、燃料ガスの供給を遮断し、換気を行う等の処理をする。 A vehicle provided with a fuel cell system is provided with a vehicle fuel gas detection device capable of detecting leakage of fuel gas in consideration of a case where fuel gas leaks from a fuel gas tank or a fuel gas pipe. A vehicle fuel gas detection device is shown in FIG. In FIG. 5, 101 is a vehicle, 102 is a floor panel, 103 is a passenger compartment, and 104 is a storage space. The vehicle 101 is provided with a vehicle compartment 103 on the upper side of the floor panel 102 at the rear of the vehicle, and with a storage space 104 for fuel gas tanks 106 and 107 described later on the lower side.
The fuel cell system 105 of the vehicle 101 includes a fuel cell mounted in a front room at the front of the vehicle, and stores two fuel gas tanks 106 and 107 in a storage space 104 below the floor panel 102 at the rear of the vehicle. 107 is fixedly attached to the lower surface 108 of the floor panel 102 from below. The fuel cell system 105 supplies hydrogen gas, which is a fuel gas, from the fuel gas tanks 106 and 107 to the fuel cell through a fuel gas pipe, and generates electricity.
The vehicle 101 is provided with a vehicle fuel gas detection device 109 that detects fuel gas leaked from the fuel cell system 105. The vehicle fuel gas detection device 109 includes a gas sensor 110 that is fuel gas detection means for detecting fuel gas. The gas sensor 110 is provided with a detection portion 112 in a main body 111, and the main body 111 is attached to the lower surface 108 of the floor panel 102 above the fuel gas tanks 106 and 107 from below. When the detection part 112 of the gas sensor 110 detects the leakage of hydrogen gas, which is a fuel gas, the vehicle fuel gas detection device 109 performs processing such as issuing an alarm, shutting off the supply of fuel gas, and performing ventilation. .

従来の車両用燃料ガス検出装置には、フロアパネルの下側の設置室に燃料ガスタンクを設置し、燃料ガスタンクが設置された設置室の天井を構成するフロアパネルに下側から上面側に突出する燃料ガス捕集凹部を形成し、フロアパネルの下側から燃料ガス捕集凹部に燃料ガス検出手段を取り付け、漏洩源となる燃料ガスタンク等よりも高い位置に燃料ガス検出手段を設置して検出精度を高めたものがある。
特開２００７−２７４７８６号公報 In a conventional vehicle fuel gas detection device, a fuel gas tank is installed in a lower installation room of a floor panel, and the floor panel constituting the ceiling of the installation room in which the fuel gas tank is installed projects from the lower side to the upper surface side. A fuel gas collection recess is formed, a fuel gas detection means is attached to the fuel gas collection recess from the lower side of the floor panel, and the fuel gas detection means is installed at a position higher than the fuel gas tank, etc., which becomes a leakage source, and the detection accuracy There is something that has improved.
JP 2007-274786 A

ところで、従来の図５に示す車両用燃料ガス検出装置１０９においては、燃料ガスタンク１０６・１０７または燃料ガス用配管等から燃料ガスが漏洩したときに、効果的に燃料ガスを検出する必要がある。このため、従来は、ガスセンサ１１０を、燃料ガスタンク１０６・１０７上方のフロアパネル１０２のなるべく高い位置に、直接あるいは固定用ブラケットを介して、フロアパネル１０２の下面１０８に下側から取り付けていた。
ところが、従来の車両用燃料ガス検出装置１０９は、燃料ガスタンク１０６・１０７がフロアパネル１０２の下面１０８に取付けられた状態において、この燃料ガスタンク１０６・１０７上方のフロアパネル１０２の下面１０８に取り付けられたガスセンサ１１０にアクセスする場合に、燃料ガスタンク１０６・１０７が障害となってアクセスが非常に困難であった。
このため、従来の車両用燃料ガス検出装置１０９は、ガスセンサ１１０の故障時等の交換性を悪化させる問題があり、また、ガスセンサ１１０の動作チェックのために検知部位１１２に燃料ガスの水素ガスを吹き付ける等の作業も困難な問題があった。さらに、従来の車両用燃料ガス検出装置１０９は、ガスセンサ１１０をフロアパネル１０２の下面１０８の最も高い位置に取付けても、ガスセンサ１１０の検知部位１１２は最低でも本体１１１の厚み分だけ下方位置となってしまうため、燃料ガス漏洩時の効果的な検知が困難な問題があった。 By the way, in the conventional vehicle fuel gas detection device 109 shown in FIG. 5, it is necessary to detect the fuel gas effectively when the fuel gas leaks from the fuel gas tanks 106 and 107 or the fuel gas piping. For this reason, conventionally, the gas sensor 110 is attached to the lower surface 108 of the floor panel 102 from the lower side, directly or via a fixing bracket, as high as possible on the floor panel 102 above the fuel gas tanks 106 and 107.
However, the conventional vehicle fuel gas detection device 109 is attached to the lower surface 108 of the floor panel 102 above the fuel gas tanks 106 and 107 in a state where the fuel gas tanks 106 and 107 are attached to the lower surface 108 of the floor panel 102. When accessing the gas sensor 110, the fuel gas tanks 106 and 107 are obstructed, making access very difficult.
For this reason, the conventional fuel gas detection device 109 for vehicles has a problem of deteriorating the exchangeability when the gas sensor 110 fails, and the hydrogen gas of the fuel gas is supplied to the detection portion 112 for the operation check of the gas sensor 110. The work of spraying and the like also had a difficult problem. Further, in the conventional vehicle fuel gas detection device 109, even if the gas sensor 110 is mounted at the highest position on the lower surface 108 of the floor panel 102, the detection portion 112 of the gas sensor 110 is at a lower position by the thickness of the main body 111 at least. Therefore, there has been a problem that it is difficult to detect effectively when the fuel gas leaks.

この発明は、車両用燃料ガス検出装置において、燃料ガス検出手段自体の交換を含めたメンテナンスを容易に行うことを可能とし、燃料ガス検出手段の信頼性を高め、漏洩した燃料ガスの精度の高い検出を可能とすることを目的とする。   According to the present invention, in a vehicle fuel gas detection device, maintenance including replacement of the fuel gas detection means itself can be easily performed, the reliability of the fuel gas detection means is improved, and the accuracy of the leaked fuel gas is high. The purpose is to enable detection.

この発明は、車両に搭載された燃料電池と前記燃料電池に燃料ガスを供給する燃料ガスタンクとを有する燃料電池システムを備え、前記燃料電池システムから漏洩した燃料ガスを検出する燃料ガス検出手段を備えた車両用燃料ガス検出装置において、前記燃料ガスタンクを前記車両のフロアパネルの下面に下側から取り付け固定し、前記燃料ガスタンクが固定されているフロアパネルの燃料ガスタンク近傍に孔を開け、前記燃料ガス検出手段を前記孔が開けられているフロアパネルの上面に上側から取り付けたことを特徴とする。   The present invention includes a fuel cell system having a fuel cell mounted on a vehicle and a fuel gas tank for supplying fuel gas to the fuel cell, and further includes fuel gas detection means for detecting fuel gas leaked from the fuel cell system. In the vehicle fuel gas detection device, the fuel gas tank is fixedly attached to the lower surface of the floor panel of the vehicle from below, and a hole is formed in the vicinity of the fuel gas tank of the floor panel to which the fuel gas tank is fixed. The detection means is attached to the upper surface of the floor panel in which the hole is formed from the upper side.

この発明の車両用燃料ガス検出装置は、燃料ガス検出手段自体を整備する場合に、フロアパネルの上面の燃料ガス検出手段に上側からアクセスして作業を行うことができるので、燃料ガス検出手段自体の交換を含めたメンテナンスを容易に行うことが可能である。
また、この発明の車両用燃料ガス検出装置は、フロアパネルの下側の燃料ガスタンクを含めた燃料系部品にアクセスして交換する場合において、フロアパネルの上側の燃料ガス検出手段を誤って破損する可能性が低いので、燃料ガス検出手段の信頼性を高めることが可能である。
さらに、この発明の車両用燃料ガス検出装置は、燃料ガス検出手段を、燃料ガスタンクの上方の最も漏洩した燃料ガスが溜まりやすい位置に取り付けているため、精度の高い検出が可能である。 In the fuel gas detection device for a vehicle according to the present invention, when the fuel gas detection means itself is provided, the fuel gas detection means itself can be operated by accessing the fuel gas detection means on the upper surface of the floor panel from above. It is possible to easily perform maintenance including replacement.
Further, the vehicle fuel gas detection device of the present invention accidentally breaks the fuel gas detection means on the upper side of the floor panel when the fuel system parts including the fuel gas tank on the lower side of the floor panel are accessed and replaced. Since the possibility is low, it is possible to increase the reliability of the fuel gas detection means.
Furthermore, since the fuel gas detection means for a vehicle according to the present invention has the fuel gas detection means attached at a position above the fuel gas tank where the most leaked fuel gas is likely to accumulate, highly accurate detection is possible.

この発明は、メンテナンスを容易にし、燃料ガス検出手段の信頼性を高め、漏洩した燃料ガスの精度の高い検出を可能とするために、燃料ガスタンク近傍のフロアパネルに孔を開け、孔が開けられたフロアパネルの上面に上側から燃料ガス検出手段を取り付けている。
以下、図面に基づいて、この発明の実施例を説明する。 In order to facilitate maintenance, improve the reliability of the fuel gas detection means, and enable highly accurate detection of leaked fuel gas, a hole is formed in the floor panel near the fuel gas tank. A fuel gas detection means is attached to the upper surface of the floor panel from above.
Embodiments of the present invention will be described below with reference to the drawings.

図１〜図４は、この発明の実施例を示し、図１は車両後部のフロアパネルの断面図、図２は車両後部のフロアパネルを外した状態の平面図、図３はガスセンサの組立状態を示す斜視図、図４はカバーを外した状態の電気部品の斜視図である。図１において、１は車両、２はフロアパネル、３は車室、４は収納空間である。
車両１は、車両後部のフロアパネル２の上側に車室３を設け、下側に後述する燃料ガスタンク１０・１１の収納空間４を設けている。収納空間４は、図２に示すように、フロアパネル２の下側において、左右の平行するリヤサイドメンバ５・６と、リヤサイドメンバ５・６の前側を連結したクロスメンバ７と、リヤサイドメンバ５・６の後端を連結したリヤバンパメンバ８とにより囲まれている。
前記車両１には、燃料電池システム９を設けている。燃料電池システム９は、車両前部のフロントルームに燃料電池を搭載し、図１・図２に示すように、車両後部のフロアパネル２の下側の収納空間４に略円筒形状の燃料ガスタンク１０・１１を収納し、燃料ガスタンク１０・１１をフロアパネル２の下面１２に下側から固定部材により取り付け固定している。
燃料ガスタンク１０・１１は、図２に示すように、長手方向を車両１の左右方向に向けて、車両１の前後方向において平行するように並べて配置されている。燃料ガスタンク１０・１１には、車両１の左側の端部にバルブ１３・１４を設け、燃料ガスを充填するための充填系燃料ガス用配管１５を接続し、燃料ガスを燃料電池に供給するための供給系燃料ガス用配管１６を接続し、供給系燃料ガス用配管１６に減圧用のレギュレータ１７・１８を介設している。充填系燃料ガス用配管１５、供給系燃料ガス用配管１６、レギュレータ１７・１８は、車両１の左側に配置している。
前記燃料電池システム９は、燃料ガスタンク１０・１１から燃料ガスである水素ガスを供給系燃料ガス用配管１６によりレギュレータ１７・１８を介して燃料電池に供給し、電気を発生する。 1 to 4 show an embodiment of the present invention, FIG. 1 is a sectional view of a floor panel at the rear of the vehicle, FIG. 2 is a plan view with the floor panel at the rear of the vehicle removed, and FIG. 3 is an assembled state of the gas sensor. FIG. 4 is a perspective view of the electrical component with the cover removed. In FIG. 1, 1 is a vehicle, 2 is a floor panel, 3 is a passenger compartment, and 4 is a storage space.
The vehicle 1 is provided with a vehicle compartment 3 on the upper side of the floor panel 2 at the rear of the vehicle, and with a storage space 4 for fuel gas tanks 10 and 11 described later on the lower side. As shown in FIG. 2, the storage space 4 includes, on the lower side of the floor panel 2, left and right rear side members 5, 6, a cross member 7 that connects the front sides of the rear side members 5, 6, 6 is surrounded by a rear bumper member 8 connected at the rear end.
The vehicle 1 is provided with a fuel cell system 9. The fuel cell system 9 has a fuel cell mounted in the front room at the front of the vehicle, and as shown in FIGS. 1 and 2, a substantially cylindrical fuel gas tank 10 is provided in the storage space 4 below the floor panel 2 at the rear of the vehicle. 11 is stored, and the fuel gas tanks 10 and 11 are attached and fixed to the lower surface 12 of the floor panel 2 from below by a fixing member.
As shown in FIG. 2, the fuel gas tanks 10 and 11 are arranged side by side so as to be parallel to each other in the front-rear direction of the vehicle 1 with the longitudinal direction directed to the left-right direction of the vehicle 1. In order to supply the fuel gas to the fuel cell, the fuel gas tanks 10 and 11 are provided with valves 13 and 14 at the left end of the vehicle 1 and connected to a filling system fuel gas pipe 15 for filling the fuel gas. The supply system fuel gas pipe 16 is connected, and the supply system fuel gas pipe 16 is provided with regulators 17 and 18 for pressure reduction. The filling fuel gas pipe 15, the supply fuel gas pipe 16, and the regulators 17 and 18 are arranged on the left side of the vehicle 1.
The fuel cell system 9 supplies hydrogen gas, which is a fuel gas, from the fuel gas tanks 10 and 11 to the fuel cell through the supply system fuel gas pipe 16 via the regulators 17 and 18 to generate electricity.

前記車両１は、燃料電池システム９から漏洩した燃料ガスを検出する車両用燃料ガス検出装置１９を設けている。車両用燃料ガス検出装置１９は、燃料ガスの水素ガスを検出する燃料ガス検出手段であるガスセンサ２０を備えている。ガスセンサ２０は、本体２１に検知部位２２を設けている。前記２つの燃料ガスタンク１０・１１が固定されているフロアパネル２には、図１・図２に示すように、車両１の左側であって、後ろ側の燃料ガスタンク１１のバルブ１４近傍に、下面１２から上面２３に貫通する孔２４を開けている。前記ガスセンサ２０は、孔２４が開けられたフロアパネル２の上面２３に上側から取り付けている。
これにより、この車両用燃料ガス検出装置１９は、ガスセンサ２０自体を整備する場合に、フロアパネル２の上面２３のガスセンサ２０に上側からアクセスして作業を行うことができるので、ガスセンサ２０自体の交換を含めたメンテナンスを容易に行うことが可能である。
また、この車両用燃料ガス検出装置１９は、フロアパネル２の下面１２に固定した燃料ガスタンク１０・１１を含めた燃料系部品（充填系燃料ガス用配管１５、供給系燃料ガス用配管１６、レギュレータ１７・１８等）にアクセスして交換する場合において、フロアパネル２の上面２３に取り付けたガスセンサ２０を誤って破損する可能性が低いので、ガスセンサ２０の信頼性を高めることが可能である。
さらに、この車両用燃料ガス検出装置１９は、ガスセンサ２０の検知部位２２をフロアパネル２の下面１２よりも上側に位置させ、燃料ガスタンク１０・１１の上方の最も燃料ガスが溜まりやすい位置にガスセンサ２０を取り付けているため、漏洩した燃料ガスについて精度の高い検出が可能である。 The vehicle 1 is provided with a vehicle fuel gas detection device 19 that detects fuel gas leaked from the fuel cell system 9. The vehicle fuel gas detection device 19 includes a gas sensor 20 as fuel gas detection means for detecting hydrogen gas of the fuel gas. The gas sensor 20 includes a detection part 22 in a main body 21. As shown in FIGS. 1 and 2, the floor panel 2 to which the two fuel gas tanks 10 and 11 are fixed has a lower surface on the left side of the vehicle 1 near the valve 14 of the fuel gas tank 11 on the rear side. A hole 24 penetrating from 12 to the upper surface 23 is formed. The gas sensor 20 is attached from above to the upper surface 23 of the floor panel 2 in which holes 24 are formed.
As a result, when the gas sensor 20 itself is serviced, the vehicle fuel gas detection device 19 can access the gas sensor 20 on the upper surface 23 of the floor panel 2 from the upper side to perform an operation. It is possible to easily perform maintenance including
The vehicle fuel gas detection device 19 includes fuel system parts including a fuel gas tank 10 and 11 fixed to the lower surface 12 of the floor panel 2 (filling fuel gas piping 15, supply fuel gas piping 16, regulator). In the case where the gas sensor 20 attached to the upper surface 23 of the floor panel 2 is accidentally damaged when accessing and exchanging it, the reliability of the gas sensor 20 can be improved.
Further, the vehicle fuel gas detection device 19 has the detection part 22 of the gas sensor 20 positioned above the lower surface 12 of the floor panel 2, and the gas sensor 20 is located above the fuel gas tanks 10 and 11 at the position where the fuel gas is most likely to accumulate. Because of this, it is possible to detect the leaked fuel gas with high accuracy.

前記ガスセンサ２０は、図１に示すように、シール部材２５を介して取り付けている。シール部材２５は、円環形状に形成し、通孔２６を備えている。具体的には、図３に示すように、フロアパネル２の下面１２に孔２４を塞がないように固定用ブラケット２７の上方に突出するボス２８・２８を当て、フロアパネル２の上面２３に円環形状のシール部材２５を通孔２６が孔２４に一致するように当て、シール部材２５の通孔２６にガスセンサ２０の検知部位２２を一致させて本体２１を当てる。この状態から、締結ねじ２９・２９をガスセンサ２０の本体２１の通孔３０・３０とフロアパネル２の通孔３１・３１とに挿通し、固定用ブラケット２６のボス２８・２８に螺着することで、フロアパネル２の上面２３にシール部材２５を介してガスセンサ２０を取り付けている。
これにより、この車両用燃料ガス検出装置１９は、漏洩した燃料ガスの車室３内への侵入を防ぐことができるので、ガスセンサ２０を車室３外に設けているときと同等の信頼性を備えることが可能である。 The gas sensor 20 is attached via a seal member 25 as shown in FIG. The seal member 25 is formed in an annular shape and includes a through hole 26. Specifically, as shown in FIG. 3, bosses 28 and 28 protruding above the fixing bracket 27 are applied to the lower surface 12 of the floor panel 2 so as not to block the holes 24, and the upper surface 23 of the floor panel 2 is applied. The annular seal member 25 is applied so that the through hole 26 coincides with the hole 24, and the detection part 22 of the gas sensor 20 is made to coincide with the through hole 26 of the seal member 25 and the main body 21 is applied. From this state, the fastening screws 29 and 29 are inserted into the through holes 30 and 30 of the main body 21 of the gas sensor 20 and the through holes 31 and 31 of the floor panel 2 and screwed to the bosses 28 and 28 of the fixing bracket 26. Thus, the gas sensor 20 is attached to the upper surface 23 of the floor panel 2 via the seal member 25.
As a result, the vehicle fuel gas detection device 19 can prevent the leaked fuel gas from entering the vehicle compartment 3, so that the reliability equivalent to that when the gas sensor 20 is provided outside the vehicle compartment 3 can be obtained. It is possible to provide.

前記フロアパネル２の上面２３には、図４に示すように、ガスセンサ２０に隣接して電気部品２８を設けるとともに、ガスセンサ２０と電気部品３２とを一体で覆うカバー３３を取り付けている。電気部品３２は、キャパシタ３２Ａ、メインスイッチ３２Ｂ、補機用バッテリ３２Ｃ等からなり、車両１の左側に配置したガスセンサ２０に隣接して、車両１の左右方向に延びるように配置している。カバー３３は、右用カバー部３３Ｒと左用カバー部３３Ｌとからなり、これらを一体に連結して長四角形状の天板部の前後左右の各辺縁から周壁を垂下した車両１の左右方向に長い有蓋無底長四角蓋形状に形成し、ガスセンサ２０と電気部品３２のキャパシタ３２Ａ、メインスイッチ３２Ｂ、補機用バッテリ３２Ｃとを覆って取り付けている。
これにより、この車両用燃料ガス検出装置１９は、ガスセンサ２０が周囲に配置された電気部品３２のキャパシタ３２Ａ、メインスイッチ３２Ｂ、補機用バッテリ３２Ｃとともに一つのカバー３３で覆われるため、複数の部品の保護が可能となり、部品点数を削減することができる。
また、この車両用燃料ガス検出装置１９は、ガスセンサ２０と電気部品３２とが一つのカバー３３で覆われるため、乗員が容易に触れることができないので、燃料ガスを燃料とする車両１において燃料ガスが漏洩しているかどうかを正確に計測するガスセンサ２０の信頼性を高めることが可能である。 As shown in FIG. 4, an electrical component 28 is provided adjacent to the gas sensor 20 on the upper surface 23 of the floor panel 2, and a cover 33 that covers the gas sensor 20 and the electrical component 32 integrally is attached. The electrical component 32 includes a capacitor 32A, a main switch 32B, an auxiliary battery 32C, and the like, and is disposed adjacent to the gas sensor 20 disposed on the left side of the vehicle 1 so as to extend in the left-right direction of the vehicle 1. The cover 33 includes a right cover portion 33R and a left cover portion 33L, which are integrally connected to each other in the left-right direction of the vehicle 1 that hangs from the front, rear, left, and right edges of the long square top plate portion. It is formed in the shape of a long lidless bottomless square lid, and covers and attaches the gas sensor 20, the capacitor 32A of the electrical component 32, the main switch 32B, and the auxiliary battery 32C.
As a result, the vehicle fuel gas detection device 19 is covered with the single cover 33 together with the capacitor 32A, the main switch 32B, and the auxiliary battery 32C of the electrical component 32 around which the gas sensor 20 is disposed. Can be protected, and the number of parts can be reduced.
In addition, since the gas sensor 20 and the electrical component 32 are covered with a single cover 33, the vehicle fuel gas detection device 19 cannot be easily touched by an occupant. It is possible to improve the reliability of the gas sensor 20 that accurately measures whether or not the gas leaks.

この発明の車両用燃料ガス検出装置は、燃料ガス検出手段のメンテナンスを容易にし、信頼性を高め、精度の高い検出を可能とするものであり、車両のフロアパネルの下面に燃料ガスタンクを固定したその他の車両にも適用することができる。   The vehicle fuel gas detection device according to the present invention facilitates maintenance of the fuel gas detection means, increases reliability, and enables highly accurate detection. A fuel gas tank is fixed to the lower surface of the floor panel of the vehicle. It can also be applied to other vehicles.

車両用燃料ガス検出装置の実施例を示す車両後部のフロアパネルの断面図である。It is sectional drawing of the floor panel of the vehicle rear part which shows the Example of the fuel gas detection apparatus for vehicles. 車両用燃料ガス検出装置の実施例を示す車両後部のフロアパネルを外した状態の平面図である。It is a top view of the state which removed the floor panel of the vehicle rear part which shows the Example of the fuel gas detection apparatus for vehicles. 車両用燃料ガス検出装置の実施例を示すガスセンサの組立状態を示す斜視図である。It is a perspective view which shows the assembly state of the gas sensor which shows the Example of the fuel gas detection apparatus for vehicles. 車両用燃料ガス検出装置の実施例を示すカバーを外した状態の電気部品の斜視図である。It is a perspective view of an electric part in the state where a cover which removed an example of a fuel gas detection device for vehicles was removed. 車両用燃料ガス検出装置の従来例を示す車両後部のフロアパネルの断面図である。It is sectional drawing of the floor panel of the vehicle rear part which shows the prior art example of the fuel gas detection apparatus for vehicles.

符号の説明Explanation of symbols

１ 車両
２ フロアパネル
３ 車室
４ 収納空間
９ 燃料電池システム
１０・１１ 燃料ガスタンク
１２ 下面
１３・１４ バルブ
１５ 充填系燃料ガス用配管
１６ 供給系燃料ガス用配管
１７・１８ レギュレータ
１９ 車両用燃料ガス検出装置
２０ ガスセンサ
２１ 本体
２２ 検知部位
２３ 上面
２４ 孔
２５ シール部材
２７ 固定用ブラケット
２９・２９ 締結ねじ
３２ 電気部品
３３ カバー DESCRIPTION OF SYMBOLS 1 Vehicle 2 Floor panel 3 Cabin 4 Storage space 9 Fuel cell system 10/11 Fuel gas tank 12 Lower surface 13/14 Valve 15 Filling fuel gas piping 16 Supply fuel gas piping 17/18 Regulator 19 Vehicle fuel gas detection Device 20 Gas sensor 21 Body 22 Detection part 23 Upper surface 24 Hole 25 Seal member 27 Fixing bracket 29/29 Fastening screw 32 Electrical component 33 Cover

Claims (3)

車両に搭載された燃料電池と前記燃料電池に燃料ガスを供給する燃料ガスタンクとを有する燃料電池システムを備え、
前記燃料電池システムから漏洩した燃料ガスを検出する燃料ガス検出手段を備えた車両用燃料ガス検出装置において、
前記燃料ガスタンクを前記車両のフロアパネルの下面に下側から取り付け固定し、
前記燃料ガスタンクが固定されているフロアパネルの燃料ガスタンク近傍に孔を開け、
前記燃料ガス検出手段を前記孔が開けられているフロアパネルの上面に上側から取り付けたことを特徴とする車両用燃料ガス検出装置。 A fuel cell system having a fuel cell mounted on a vehicle and a fuel gas tank for supplying fuel gas to the fuel cell;
In the vehicle fuel gas detection device comprising fuel gas detection means for detecting fuel gas leaked from the fuel cell system,
The fuel gas tank is attached and fixed to the lower surface of the floor panel of the vehicle from below,
A hole is made in the vicinity of the fuel gas tank of the floor panel to which the fuel gas tank is fixed,
A fuel gas detection device for a vehicle, wherein the fuel gas detection means is attached to the upper surface of the floor panel having the holes from above. 前記燃料ガス検出手段は、シール部材を介してフロアパネルに取り付けたことを特徴とする請求項１に記載の車両用燃料ガス検出装置。   The vehicle fuel gas detection device according to claim 1, wherein the fuel gas detection means is attached to the floor panel via a seal member. 前記フロアパネルの上面には、前記燃料ガス検出手段に隣接して電気部品を設けるとともに、前記燃料ガス検出手段と電気部品とを一体で覆うカバーを取り付けたことを特徴とする請求項１または請求項２のいずれか一項に記載の車両用燃料ガス検出装置。   2. The upper surface of the floor panel is provided with an electrical component adjacent to the fuel gas detection means, and a cover for integrally covering the fuel gas detection means and the electrical component is attached. The vehicle fuel gas detection device according to any one of Items 2.
JP2008175254A 2008-07-04 2008-07-04 Fuel gas detection device for vehicle Pending JP2010012959A (en)

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Publication number Priority date Publication date Assignee Title
JP2002151126A (en) * 2000-11-14 2002-05-24 Nissan Motor Co Ltd Fuel cell system for vehicle
JP2004142588A (en) * 2002-10-24 2004-05-20 Nissan Motor Co Ltd Floor structure of vehicle equipped with high-pressure tank
JP2004192919A (en) * 2002-12-10 2004-07-08 Toyota Motor Corp Fuel cell system
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