JP4529464B2 - Vehicle fuel tank arrangement structure - Google Patents

Description

  The present invention relates to a fuel tank arrangement structure for a vehicle in which a plurality of rows of passenger seats are arranged in front and rear in a vehicle interior.

Conventionally, as the fuel tank arrangement structure of the vehicle of the above-described example, there is the following.
In other words, a tunnel portion projecting upward toward the vehicle interior side is provided at the center in the vehicle width direction of the floor panel that forms the lower surface of the vehicle interior, and the tunnel portion between the driver seat and the passenger seat is further expanded upward. A central bulge is formed to form a side bulge by bulging upward the floor panel at the lower part of the seat cushion of the driver's seat and the passenger's seat. A fuel tank is disposed so as to extend in the vehicle width direction and extend in the vehicle width direction outside the center bulging portion and the left and right side bulging portions described above (see Patent Document 1). .

In this conventional structure, the fuel tank can be arranged by effectively using the dead space below the front seat (driver's seat and front passenger seat), so that a large living space can be secured even for a compact vehicle. On the other hand, since the fuel tank extends in the vehicle width direction, it is disadvantageous at the time of a side collision, and as a countermeasure against this side collision, there is a problem of increasing the weight if the above fuel tank is surrounded by a frame and protected. .

In the above conventional structure, when the seat cushion of the passenger seat stands up against the seat back side and the seat cushion and the seat back are integrally slid to the front of the vehicle, Although the luggage storage space is secured at the original position, there is a problem that effective use of the good luggage storage space cannot be achieved at the time of such seat arrangement due to the presence of the side bulge portion at this position. there were.

On the other hand, another structure of the conventional vehicle fuel tank arrangement structure is as follows.
In other words, a tunnel part is provided at the center in the vehicle width direction of the floor panel that forms the lower surface of the passenger compartment and projects upward toward the passenger compartment side, and the lower part of the tunnel part is covered with the floor panel so as to be substantially flush with the floor panel. A member is provided, and a fuel tank extending in the front-rear direction of the vehicle is disposed between the cover member and the tunnel portion (see Patent Document 2).

In this conventional structure, the fuel tank is disposed inside the tunnel portion so that it does not protrude below the floor panel. Therefore, in order to secure the tank capacity, the height of the tunnel portion in the vertical direction is high. because the part is increased in size, walk-through of the vehicle width direction is difficult, in particular, was not suitable for a compact car.
JP 2000-85382 A Japanese Utility Model Publication No.59-78131

According to the present invention, a tunnel portion having a narrower rear portion than the front portion in the vehicle width direction is provided, and a fuel tank having a shape corresponding to the shape of the tunnel portion is arranged on the vehicle exterior side of the tunnel portion. By installing and arranging the front seat above the wide part of the tunnel part and the rear seat above the narrow part of the tunnel part, securing the tank capacity and securing the comfort in the vertical direction in the passenger compartment, can achieve both securing the feet of the passenger space, in particular, it becomes advantageous structure against side collision, the no Succoth to a failure of even the seat arrangement, also, the front end of the tunnel portion By providing an inclined portion whose width in the vehicle width direction narrows toward the front, and forming a leg space for the front seat occupant on the side of the inclined portion, the side of the inclined portion is the leg of the front seat occupant Space to secure a comfortable seating position for the front passengers. By arranging a canister at the front end of the fuel tank, the canister can be arranged as close to the engine as possible, and space can be used effectively. In addition, the floor panel A floor frame extending in the front-rear direction of the vehicle along the floor panel is provided between the side sill extending in the front-rear direction of the vehicle and the tunnel portion, and the vehicle is disposed between the floor frame and the tunnel portion. By arranging the exhaust passage extending in the front-rear direction, the floor frame (vehicle body structure) is not deformed, and the exhaust passage can be arranged as straight as possible so that the exhaust passage does not interfere with the floor frame. The floor can be set low, and the fuel tank is located in the tunnel, so that the fuel tank is exhausted. Heat receiving difficult from an object to provide a fuel tank disposition structure of a vehicle capable of reducing the thermal damage prevention.

A fuel tank arrangement structure for a vehicle according to the present invention is a fuel tank arrangement structure for a vehicle in which a plurality of passenger seats are arranged in the front and rear in a vehicle interior, and is a vehicle width direction center portion of a floor panel that forms a lower surface of the vehicle interior Is provided with a tunnel portion projecting upward toward the vehicle interior side and having a shape in the vehicle width direction that is narrower at the rear than the front portion. Corresponding to the shape of the tunnel part, a fuel tank having a narrower rear part compared to the front part is arranged, and above the wide part where the width of the tunnel part is larger in the car width direction. A front seat is disposed on the front side of the tunnel portion, and a rear seat is disposed above the narrow portion where the width of the tunnel portion in the vehicle width direction is narrow, and the vehicle width direction is directed forward at the front end portion of the tunnel portion. And a narrow slope part is provided, and there is a leg space for the front seat occupant on the side of the slope part. The canister is disposed at an inclined portion formed at the front end portion of the fuel tank, and the canister is disposed so as to be inclined in plan view so as to be along the inclined portion. A floor frame extending in the vehicle front-rear direction along the floor panel is provided between the side sill that extends in the front-rear direction of the vehicle and the tunnel portion, and the vehicle is disposed between the floor frame and the tunnel portion. An exhaust passage extending in the front-rear direction is disposed, and the exhaust passage is disposed on the opposite side of the fuel tank from the plan view where the canister is disposed .

The above-mentioned passenger seats may be set to a front seat (driver seat, passenger seat) and a rear seat, and the fuel tank may be made of synthetic resin.
According to the above configuration, while securing the capacity of the fuel tank by tank shape having a wide portion and a narrow portion, it is possible to secure a vertical comfort in the vehicle compartment, and by the narrow portion of the above In particular, it is possible to secure the foot space of the rear seat occupant.

Moreover, the fuel tank described above so located within the tunnel portion comprising a shape corresponding to the shape of the fuel tank, also becomes advantageous for side collision, further, the wide portion of the above-mentioned tunnel section until the side sill Since it does not extend and has a predetermined width in the vehicle width direction, it does not interfere with seat arrangement.

Further, the front end portion of the tunnel portion is provided with an inclined portion whose width in the vehicle width direction is narrowed toward the front, and a leg space for a front seat occupant is formed on the side of the inclined portion. Therefore, the side of the inclined portion becomes a leg space for the front seat occupant, and an easy seating posture for the front seat occupant can be secured.

Further, since the canister is disposed at the front end portion of the fuel tank, the canister can be disposed as close to the engine as possible, and the space can be effectively used.

In addition, a floor frame that extends in the front-rear direction of the vehicle along the floor panel is provided between a side sill that extends in the front-rear direction of the vehicle at a side end of the floor panel, and the floor frame and the tunnel. Since the exhaust passage extending in the front-rear direction of the vehicle is arranged between the vehicle and the vehicle, the exhaust passage can be arranged as straight as possible without changing the floor frame (body structure). Since the exhaust passage can be disposed so as not to interfere with the floor frame, the floor surface can be set low. Furthermore, since the fuel tank is located in the tunnel portion, the fuel tank is difficult to receive heat from the exhaust passage, and heat damage can be prevented.

In one embodiment of the present invention, the narrow portion of the tunnel portion forms a leg space for an occupant seated on the rear seat.
According to the above configuration, the rear seat occupant can place his / her feet in the above-described leg space, so that an easy sitting posture can be maintained.

In one embodiment of the present invention, the space between the narrow portion of the tunnel portion, the floor panel, and the lower portion of the seat cushion of the front seat is set as a footrest space for a passenger sitting on the rear seat.
According to the above-described configuration, the rear-seat passengers can be seated in a comfortable position, which stretched the legs to space every above-mentioned legs, especially, that effective and Do in the compact car.

In one embodiment of the present invention, a fuel supply pipe is connected to the rear end of the fuel tank.
According to the above configuration, it is possible to shorten the length of the fuel filler tube, as a result, Ru can be improved safety of.

  According to the present invention, a tunnel portion having a narrower rear portion than the front portion in the vehicle width direction is provided, and a fuel tank having a shape corresponding to the shape of the tunnel portion is provided on the vehicle exterior side of the tunnel portion. Since the front seat is arranged above the wide part of the tunnel part and the rear seat is arranged above the narrow part of the tunnel part, the tank capacity is ensured and the comfort in the vertical direction in the passenger compartment is ensured. In addition, it is possible to achieve both a passenger's foot space and an advantageous structure against side collisions, and there is an effect that the seat arrangement is not hindered.

Further, the front end portion of the tunnel portion is provided with an inclined portion whose width in the vehicle width direction is narrowed toward the front, and a leg space for a front seat occupant is formed on the side of the inclined portion. Therefore, the side of the inclined portion becomes a leg space for the front seat occupant, and there is an effect that an easy seating posture of the front seat occupant can be secured.

Further, since the canister is disposed at the front end portion of the fuel tank, the canister can be disposed as close to the engine as possible, and the space can be effectively used.

In addition, a floor frame that extends in the front-rear direction of the vehicle along the floor panel is provided between a side sill that extends in the front-rear direction of the vehicle at a side end of the floor panel, and the floor frame and the tunnel. Since the exhaust passage extending in the front-rear direction of the vehicle is arranged between the vehicle and the vehicle, the exhaust passage can be arranged as straight as possible without changing the floor frame (body structure). Since the exhaust passage can be disposed so as not to interfere with the floor frame, the floor surface can be set low. Furthermore, since the fuel tank is located in the tunnel portion, the fuel tank is less likely to receive heat from the exhaust passage, and there is an effect that heat damage can be prevented.

The purpose is to secure the tank capacity, to ensure the comfort in the vertical direction of the passenger compartment and to secure the foot space of the occupant, which is advantageous for side collisions and does not interfere with the seat arrangement. In the vehicle fuel tank arrangement structure in which a plurality of passenger seats are arranged in the front and rear in the passenger compartment, the floor panel that forms the lower surface of the passenger compartment protrudes upward toward the passenger compartment side in the center of the vehicle width direction, A tunnel part having a narrower rear part than the front part is provided in the vehicle width direction, and the shape in the vehicle width direction corresponding to the shape of the tunnel part is provided in the space below the floor panel in the tunnel part. A fuel tank having a narrow rear portion compared to the front portion is disposed, and a front seat is disposed above a wide portion where the width of the tunnel portion in the vehicle width direction is large. Rear seat above the narrow part where the width in the vehicle width direction of the part is narrow And a front end of the tunnel is provided with an inclined portion whose width is narrowed toward the front, and a leg space for a front seat occupant is formed on a side of the inclined portion. A canister is disposed on an inclined portion formed at the front end of the tank, and the canister is disposed so as to be inclined in a plan view so as to be along the inclined portion. A floor frame extending in the front-rear direction of the vehicle along the floor panel is provided between the side sill extending in the front-rear direction and the tunnel portion, and the exhaust extending in the front-rear direction of the vehicle is provided between the floor frame and the tunnel portion. passage is disposed, the exhaust passage on the opposite side of the plan view canister with respect to the fuel tank is disposed is realized by configuration called to dispose.

An embodiment of the present invention will be described in detail with reference to the drawings.
The drawings show a fuel tank arrangement structure of a vehicle. In FIGS. 1, 2 and 3, a dash lower panel (dash panel) 3 for partitioning the engine room 1 and the vehicle compartment 2 in the front-rear direction is provided. A floor panel 4 that forms the lower surface of the passenger compartment 2 is connected to the lower end portion.

Floor panel 4 described above extends substantially horizontally toward the front to the rear, and integrally connecting the Li Ya floor panel 6 via a kick-up portion 5 at the rear end of the floor panel 4, the rear floor panel 6 A spare tire pan 7 is formed in a step-down manner at the center of the tire.

  A tunnel portion 8 that protrudes upward toward the inside of the passenger compartment 2 is provided at the center in the vehicle width direction of the floor panel 4 described above.

  As shown in FIGS. 3 and 4, the tunnel portion 8 extends in the vehicle front-rear direction from the dash lower panel 3 toward the kick-up portion 5, and has a wide portion 8a having a large width in the vehicle width direction at the front portion. A narrow portion 8c having a narrow width in the vehicle width direction is provided at the rear portion of the wide portion 8a via an inclined portion 8b that is narrow toward the rear, and the vehicle width is further wider than the narrow portion 8c. A slim portion 8d having a small width in the direction is formed.

In addition , an inclined portion 8e whose width in the vehicle width direction narrows forward and a slim portion 8f extending forward toward the dash lower panel 3 are formed in the front portion of the wide portion 8a.
And the front seats 9, 9 as the front seats are disposed above the wide portion 8a having a large width in the vehicle width direction of the tunnel portion 8 described above, while the slim portion having a narrow width in the vehicle width direction of the tunnel portion 8 is provided. Rear seats 10 and 10 as rear seats are disposed above the rear portion of 8d, and a plurality of rows of seats 9 and 10 are disposed in the front and rear of the passenger compartment 2.

Here, as shown in FIGS. 1, 2, and 4, the above-described front seat 9 includes a seat cushion 11, a seat back 12, and a headrest 13, and the rear seat 10 similarly has a seat cushion 14, A seat back 15 and a headrest 16 are provided.

Sides of the narrow portion 8c and the slim portion 8d of the tunnel portion 8 described above are set as leg space of the rear seat occupant Y (see FIG. 2) seated on the rear seat 10. In particular, in this embodiment, as shown in FIG. 2, the space between the narrow portion 8c side of the tunnel portion 8, the upper surface of the floor panel 4, and the lower portion of the seat cushion 11 of the front seat 9 is the rear seat occupant Y (FIG. 2). (Refer to FIG. 5), the position of the foot of the rear seat occupant Y is indicated by a virtual line α.

Further , the side portions of the inclined portion 8e and the slim portion 8f are formed in the leg space of the front seat occupant X (see FIG. 2).
As shown in FIGS. 1 and 2, a pair of left and right front side frames 17, 17 as vehicle body rigid members extending forward from the dash lower panel 3 are provided on both sides in the engine room 1. , 17 are provided along the lower surface of the dash lower panel 3 along the lower portion of the floor panel 4, and a floor frame 18 is integrally or integrally attached to a side end of the front side frame 17.

Above the floor frame 18 as shown in FIGS. 1 and 3, a vehicle body rigidity member which extends in a straight line in the longitudinal direction along the lower surface of the floor panel 4, between the floor frame 18 and the floor panel 4 A closed section 19 extending in the same direction is formed therebetween.

Further , side sills 20 extending in the front-rear direction of the vehicle are provided at both left and right ends of the floor panel 4. The side sill 20 is a vehicle body rigid member formed by joining a side sill inner 21, a side sill reinforcement 22, and a side sill outer 23 as shown in FIGS. A side sill closed section 24 extending in the front-rear direction of the vehicle is formed between the front and rear sides 23.

  Here, as shown in FIG. 1, the floor frame 18 is provided between the side sill 20 and the tunnel portion 8 so as to extend in the front-rear direction of the vehicle along the lower surface of the floor panel 4. An exhaust pipe 26 serving as an exhaust passage for exhausting exhaust gas from the engine 25 to the rear of the vehicle is disposed between the tunnel 18 and the tunnel portion 8.

As shown in FIGS. 1 and 2, a pre-silencer 27 is interposed in the middle of the exhaust pipe 26 described above, and a main silencer 28 is attached to the rear end of the exhaust pipe 26.
As shown in FIGS. 1 and 3, the floor panel 4 corresponding to the wide portion 8 a of the tunnel portion 8 has a vehicle width up to the side sill inners 21 and 21 in the left and right side sills 20 and 20 across the tunnel portion 8. A cross member 30 (so-called No. 2 cross member) as a vehicle body rigid member extending in the direction is provided.

At a position separated from the cross member 30 in the front-rear direction of the vehicle, specifically, at a position corresponding to the narrow portion 8c of the tunnel portion 8, the floor panel 4 has side sill inners 21, 21 on the left and right side sills 20, 20. And the narrow members 8c, 8c are cross members 31, 31 as so-called vehicle body rigid members connecting the narrow portions 8c, 8c. 2.5 Kurosumen server is provided.

  As shown in FIGS. 1 and 2, a cross member 32 (so-called No. 3 cross member) extending in the vehicle width direction is attached to the rear surface of the kick-up portion 5 on the rear end side of the side sill 20, and the kick-up portion 5 The rear side frames 33 and 33 are attached to the lower surface left and right of the rear floor panel 6, and the cross member (so-called No. 4 cross member) is connected to the front lower surface of the rear floor panel 6 between the left and right rear side frames 33 and 33 in the vehicle width direction. 34 is attached. The cross members 32 and 34 and the rear side frame 33 described above are all vehicle body rigid members.

Furthermore, as shown in FIG. 1, the lower surface of the floor panel 4 is attached a pair of left and right rear floor frame 35, 35. The rear floor frame 35 is a vehicle body rigid member that extends in the front-rear direction of the vehicle in the front-rear direction so as to correspond to the cross members 31, 32 and is positioned between the side sill 20 and the floor frame 18 in the vehicle width direction.

In the figure, 36 is a front wheel, 37 is a rear wheel, 38 is an instrument panel, 39 is a seat slide rail, and the front seat 9 is attached to the cross members 30 and 31.
FIG. 5 shows a fuel tank 40 disposed in a space in the tunnel portion 8 below the floor panel 4, and the fuel tank 40 is formed so as to correspond to the shape of the tunnel portion 8.

  That is, as shown in the figure, the fuel tank 40 is formed with a wide portion 40a having a large width in the vehicle width direction at a front portion thereof, and an inclined portion that becomes narrow toward the rear at the rear portion of the wide portion 40a. A narrow portion 40c having a narrow width in the vehicle width direction and a slim portion 40d having a smaller width in the vehicle width direction than the narrow portion 40c are formed via 40b.

In addition , an inclined portion 40e whose width in the vehicle width direction becomes narrow toward the front and a slim portion 40f extending forward by a predetermined amount are formed at the front portion of the wide portion 40a. By configuring the fuel tank 40 in such a shape, it is configured to ensure the tank capacity while setting the overall height of the tank as low as possible.

  And the fuel tank 40 of such a shape is arrange | positioned in the space in the tunnel part 8 below the floor panel 4, as shown in FIGS. In this case, the upper half 40U (see FIG. 5) is located in the tunnel portion 8 on the upper side of the fuel tank 40, and the lower part 40L (see FIG. 5) is located on the outside of the vehicle below the lower surface of the floor panel 4. It is arranged to do.

  As shown in FIGS. 1 and 2, a filler pipe 41 as a fuel supply pipe is connected to the rear end of the fuel tank 40, and the filler pipe 41 is led to a filler box 42 on the rear fender panel side. By connecting the filler panel 41 to the rear end of the fuel tank 40, the length of the filler pipe 41 can be shortened, and the improvement of safety can be ensured.

Further , as shown in FIG. 1, a breather pipe 43 that allows air in the fuel tank 40 to escape during refueling is attached to the upper center of the fuel tank 40, and the breather pipe 43 is led to a filler box 42 on the rear fender panel side. .

Furthermore, as shown in FIGS. 1 and 2, the inclined portion 40e bottom of the front end portion of the fuel tank 40 is disposed a canister 44 along the said inclined portion 40e, a mounting structure of the canister 44, The canister 44 is arranged close to the engine 25 as much as possible, and the space is effectively used. The above-mentioned canister 44 temporarily stores the evaporated gas from the fuel tank 40 and sucks the evaporated gas together with outside air into the intake system of the engine 25 when the engine 25 is started.

  Next, the support structure of the fuel tank 40 will be described with reference to FIGS.

6 is a cross-sectional view taken along line AA in FIG. 1, FIG. 7 is a cross-sectional view taken along line BB in FIG. 1, FIG. 8 is a cross-sectional view taken along line CC in FIG. FIG.
The fuel tank 40 described above, the recess 40g in response to the wide section 40a and narrow section 40c, 40h (see FIG. 5) is formed, as shown in FIGS. 6 and 9, the tunnel portion 8 A tunnel front member 50 (so-called tunnel member inner) having a hat-shaped cross section is joined to the lower surface of the wide portion 8a so as to correspond to the recess 40g. The tunnel front member 50 is a member that connects the open side of the tunnel portion 8 in the vehicle width direction at a position corresponding to the cross member 30 in the upper portion of the fuel tank 40, and between the tunnel portion 8 and the tunnel front member 50. Is formed with a closed cross-section 51 extending in the vehicle width direction.

  Further, a lower tunnel member 52 is provided at the position corresponding to the above-mentioned cross member 30 and tunnel front member 50 in the vertical direction at the lower part of the fuel tank 40 to connect the open side of the tunnel portion 8 in the vehicle width direction. The fuel tank 40 is supported by the lower tunnel member 52 by fixing the left and right ends of the member 52 to the left and right ends of the tunnel front member 50 using mounting members 53 such as bolts and nuts.

  In this embodiment, the lower tunnel member 52 described above is formed by processing both ends of the pipe member flat, and a lower tunnel member is tightened from below with a bolt that is welded and fixed to the upper surface of the tunnel front member 50 from below. 52 is detachably attached to the tunnel front member 50.

  Further, as shown in FIGS. 7 and 9, a tunnel rear member 54 (so-called tunnel member inner) having a hat-shaped cross section is joined to the lower surface of the narrow portion 8c of the tunnel portion 8 so as to correspond to the concave portion 40h. The tunnel rear member 54 is a member that connects the open side of the tunnel portion 8 in the vehicle width direction at a position corresponding to the cross member 31 in the upper portion of the fuel tank 40, and between the tunnel portion 8 and the tunnel rear member 54. Is formed with a closed section 55 extending in the vehicle width direction.

  Further, at a position corresponding to the above-described cross member 31 and tunnel rear member 54, a lower tunnel member 56 is provided at the lower portion of the fuel tank 40 to connect the open side of the tunnel portion 8 in the vehicle width direction. The fuel tank 40 is supported by the lower tunnel member 56 by fixing the left and right ends to the left and right ends of the tunnel rear member 54 using mounting members 57 such as bolts and nuts.

In this embodiment, the above-described lower tunnel member 56 is formed by processing both ends of a pipe member into a flat shape, and tightens a bolt from below to a nut that has been welded and fixed to the upper surface of the tunnel rear member 54 from below. The member 56 is detachably attached to the tunnel rear member 54.

  In short, the lower tunnel members 52 and 56 (see FIGS. 6 and 7) correspond to the cross member 30 (see FIG. 6) and the cross member 31 (see FIG. 7) provided apart from each other in the longitudinal direction of the vehicle. ), And the lower tunnel members 52 and 56 connecting the open side of the tunnel portion 8 are configured to support the fuel tank 40 with a predetermined interval in the front-rear direction of the vehicle. It is configured to ensure support rigidity.

Further, as shown in FIGS. 6-9, a fuel tank 40 top surface, a tunnel section 8 lower surface, tunnel front member 50 the lower surface, between the tunnel rear member 54 the lower surface is fibrous surface of a heat-resistant The sealing member 58 is interposed.
Instead of the bottom structure of the fuel tank 40 shown in FIG. 9, as shown in FIG. 10, recesses 40m and 40n are formed in portions corresponding to the lower tunnel members 52 and 56 of the fuel tank 40, and the front and rear recesses 40m, 40n is supported by the lower tunnel members 52 and 56, and the lower deck of the fuel tank 40 is set to be substantially flush with the lowermost portions of the lower tunnel members 52 and 56, thereby improving the fuel tank capacity and the fuel tank rigidity. You may comprise so that improvement may be aimed at.

  In the figure, arrow F indicates the front of the vehicle, and arrow R indicates the rear of the vehicle. FIG. 4 shows a seat arrangement state in which the front seat 9 on the passenger seat side is slid rearward after the seat cushion 14 of the rear seat 10 is folded upright on the seat back 15 side.

  As described above, the fuel tank arrangement structure of the vehicle according to the above embodiment is a fuel tank arrangement structure of the vehicle in which a plurality of passenger seats (see the front seat 9 and the rear seat 10) are arranged in the front and rear in the passenger compartment 2. In addition, the floor panel 4 forming the lower surface of the passenger compartment 2 protrudes upward toward the inner side in the vehicle width direction, and the shape in the vehicle width direction is narrower at the rear than at the front. The tunnel portion 8 is provided, and in the space inside the tunnel portion 8 below the floor panel 4, the shape in the vehicle width direction is narrower in the rear portion than the front portion, corresponding to the shape of the tunnel portion 8. The fuel tank 40 is disposed, and a front seat (see the front seat 9) is disposed above the wide portion 8a where the width of the tunnel portion 8 in the vehicle width direction is large. The narrow portion having a narrow width in the width direction (see the narrow portion 8c and the slim portion 8d) Write the rear seat (see the rear seat 10) in which is disposed.

According to this configuration, the tank form having the wide portion 8a and the narrow portion (see the narrow portion 8c and the slim portion 8d) secures the capacity of the fuel tank 40, and the comfortability in the vertical direction in the passenger compartment 2 is achieved. In addition , the above-mentioned narrow portion (see the narrow portion 8c and the slim portion 8d) can particularly secure a foot space for the rear seat occupant Y.

Moreover, fuel tank 40 described above, so located within the tunnel portion 8 comprising a shape corresponding to the shape of the fuel tank 40, also becomes advantageous for side collision, further, the tunnel portion 8 of the above Since the wide portion 8a does not extend to the side sill 20 and has a predetermined width in the vehicle width direction, the seat arrangement as shown in FIG. 4 is not hindered.

Further, the narrow part 8c of the tunnel part 8 forms a leg part space (see an imaginary line α in FIG. 5) of the occupant Y seated on the rear seat 10.
According to this configuration, the rear-seat occupant Y can place his / her feet in the above-described leg space, so that an easy sitting posture can be maintained.

Further, the space between the narrow portion 8 c of the tunnel portion 8, the floor panel 4, and the lower portion of the seat cushion 11 of the front seat 9 is set as a footrest space for the occupant Y sitting on the rear seat 10.
According to this configuration, the rear-seat occupant Y can be seated in an easy posture with his legs extended in the above-described footrest space, as indicated by phantom lines in FIG. 2, and is particularly effective in a compact car.

  In addition, the front end portion of the tunnel portion 8 is provided with an inclined portion (refer to the inclined portion 8e and the slim portion 8f) whose width in the vehicle width direction becomes narrower toward the front, and a front side of the inclined portion. The leg space of the seat occupant X is formed.

  According to this configuration, the side of the inclined portion (see the inclined portion 8e and the slim portion 8f) serves as a leg space for the front seat occupant X, so that an easy seating posture of the front seat occupant X can be ensured.

Also, a filler pipe 41 as a fuel supply pipe is connected to the rear end of the fuel tank 40.
According to this configuration, the length of the filler pipe 41 can be shortened, and as a result, safety can be improved.

  Further, a canister 44 is disposed at the front end of the fuel tank 40.

  According to this configuration, the canister 44 can be disposed as close to the engine 25 as possible, and the space can be effectively used.

  In addition, a floor frame 18 extending in the front-rear direction of the vehicle along the floor panel 4 is provided between the side sill 20 that extends in the front-rear direction of the vehicle at the side end of the floor panel 4 and the tunnel portion 8. An exhaust pipe 26 extending in the front-rear direction of the vehicle is disposed between the floor frame 18 and the tunnel portion 8.

  According to this configuration, the exhaust pipe 26 can be arranged as straight as possible without deforming the floor frame 18 (vehicle body structure), and the exhaust pipe 26 is arranged so as not to interfere with the floor frame 18. Therefore, the floor surface can be set low. Moreover, since the fuel tank 40 is located in the tunnel part 8, the fuel tank 40 is hard to receive the heat from the exhaust pipe 26, and it can prevent heat damage.

In the correspondence between the configuration of the present invention and the above-described embodiment,
The front seat (passenger seat) of the present invention corresponds to the front seat 9 of the embodiment,
Similarly,
The rear seat (passenger seat) corresponds to the rear seat 10,
The fuel tank corresponds to the fuel tank 40,
The narrow portion corresponds to the narrow portion 8c including the slim portion 8d,
The inclined portion narrowing toward the front corresponds to the inclined portion 8e including the slim portion 8f, the fuel supply pipe corresponds to the filler pipe 41,
The exhaust passage corresponds to the exhaust pipe 26,
The present invention is not limited to the configuration of the above-described embodiment.

The top view which shows the fuel tank arrangement | positioning structure of the vehicle of this invention. The side view which shows the fuel tank arrangement | positioning structure of a vehicle. The perspective view of the principal part of FIG. The top view shown in the state which made the passenger seat a seat arrangement. The perspective view of a fuel tank. FIG. 2 is a cross-sectional view taken along line AA in FIG. 1. FIG. 3 is a cross-sectional view taken along line B-B in FIG. 1. CC cross-sectional view of FIG. The principal part enlarged side view of FIG. The side view which shows the other Example of the bottom part structure of a fuel tank.

2 ... Vehicle compartment 4 ... Floor panel 8 ... Tunnel part 8a ... Wide part 8c ... Narrow part 8e ... Inclined part 9 ... Front seat (front seat)
10 ... Rear seat (rear seat)
11 ... Seat cushion 18 ... Floor frame 20 ... Side sill 26 ... Exhaust pipe (exhaust passage)
40 ... Fuel tank (fuel tank)
41 ... Filler pipe (fuel refueling pipe)
44 ... Canister

Claims (4)

A fuel tank arrangement structure of a vehicle in which a plurality of passenger seats are arranged in the front and rear in the vehicle interior,
A tunnel portion that protrudes upward toward the vehicle interior side in the vehicle width direction center portion of the floor panel that forms the lower surface of the vehicle interior and has a narrower rear portion than the front portion in the vehicle width direction shape. Provided,
In the space in the tunnel portion below the floor panel, a fuel tank having a narrower rear portion than the front portion corresponding to the shape of the tunnel portion is disposed,
A front seat is disposed above a wide portion having a large width in the vehicle width direction of the tunnel portion, while a rear seat is disposed above a narrow portion having a narrow width in the vehicle width direction of the tunnel portion,
The front end portion of the tunnel portion is provided with an inclined portion whose width is narrowed toward the front, and a leg space for a front seat occupant is formed on the side of the inclined portion,
A canister is disposed on an inclined portion formed at the front end of the fuel tank,
The canister is disposed so as to be inclined in plan view so as to be along the inclined portion,
A floor frame extending in the vehicle front-rear direction along the floor panel is provided between the side sill extending on the side edge of the floor panel in the vehicle front-rear direction and the tunnel portion, and between the floor frame and the tunnel portion, An exhaust passage extending in the front-rear direction of the vehicle is disposed between,
A fuel tank arrangement structure for a vehicle, wherein the exhaust passage is arranged on a side opposite to a plan view where a canister is arranged with respect to the fuel tank. 2. The fuel tank arrangement structure for a vehicle according to claim 1, wherein the narrow portion of the tunnel portion forms a leg space for an occupant seated on a rear seat. The fuel tank arrangement structure for a vehicle according to claim 2, wherein a space between the narrow portion of the tunnel portion and the lower portion of the seat cushion of the front seat of the floor panel is set as a footrest space for an occupant seated on the rear seat. Fuel tank arrangement設構granulated for a vehicle according to any one of <br/> claims 1 to 3 connected the fuel oil supply pipe to the rear end of the fuel tank.

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