JP2014208518A - Component loading structure of vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a component loading structure of a vehicle which allows a vehicle body frame to be used for a vehicle including only an engine as a driving source and a vehicle including an engine and a motor as driving sources and enables optimization of the component loading structure.SOLUTION: A component loading structure of a vehicle includes: a first component loading space (53) provided at an underfloor space of a rear seat (16); and a second component loading space (57) provided at an underfloor space of a front seat (13) and allows a first fuel tank (54) that is loaded in the first component loading space (53) and a second fuel tank (58) that is loaded in the second component loading space (57) to be exchangeably loaded in a common vehicle body frame (31). A vehicle (1) is a hybrid vehicle including an engine (2) and a motor (3) as driving sources and includes only the second fuel tank (58) loaded in the second component loading space (57). In the first component loading space (53), a canister (68) installed at a fuel pipeline (61) is loaded.

Description

  The present invention relates to a vehicle component mounting structure for mounting components including a fuel tank, and more particularly to a vehicle component mounting structure including an internal combustion engine and an electric motor as drive sources.

  In addition to a vehicle (engine vehicle) having only an internal combustion engine (engine) as a drive source, there is a vehicle (hybrid vehicle) having an internal combustion engine and an electric motor (motor) as drive sources. In some of these vehicles, a fuel tank mounting structure for an internal combustion engine includes a fuel tank mounted under the floor below the rear seat (on the lower surface side of the floor seat). In addition to this, a vehicle having a so-called center tank layout in which a fuel tank is arranged at the center portion of the floor panel (below the front seat) is known as a technique for expanding the volume of the passenger compartment without changing the vehicle body dimensions. ing.

  Recently, it has been studied to adopt the above-described center tank layout particularly in a hybrid vehicle using an engine and an electric motor as drive sources. For example, in Patent Document 1, an engine (IPU) having an engine and an electric motor as drive sources mounted on the front side of a vehicle, a fuel tank for supplying fuel to the engine, and a battery as an energy source for a motor under the front seat. The structure which mounts in the underfloor space of luggage space is disclosed.

  However, the mounting space of the center tank as described above is limited in the dimension in the height direction in view of the front seat (driver's seat) as compared with the mounting space of the rear tank. Also, the lateral width needs to be stored in the body frame. As a result, the capacity that can be secured in the center tank may be limited to a smaller capacity than the capacity that can be secured in the rear tank. Therefore, when the center tank is limited to a small capacity, a hybrid vehicle having a relatively good fuel economy (fuel consumption rate) can secure the capacity of the fuel tank even in the center tank, but the engine vehicle has a sufficient capacity of the fuel tank. There is a possibility that it cannot be secured. Therefore, conventionally, the fuel tank mounting structure (mounting position) is different between the hybrid vehicle and the engine vehicle even in the same vehicle type.

  In this case, however, the mounting position of the tank is different, so the arrangement structure of the body frame and other parts is also different, but this requires more space for the installation of parts, which saves space. There is a problem of hindering.

  In the prior art described in Patent Document 2, a fuel tank (rear tank) is mounted on the lower side of the rear seat, and a battery for an electric motor is provided at the lower center of the front seat (the center in the vehicle width direction). It is installed. However, Patent Document 2 does not disclose any technology related to the above-described problem due to the difference in the fuel tank mounting structure (mounting position) between the engine vehicle and the hybrid vehicle.

Japanese Patent No. 3765947 Japanese Patent No. 3817953

  The present invention has been made in view of the above-described points, and an object thereof is to share a vehicle body frame between a vehicle having only an internal combustion engine as a drive source and a vehicle having both an internal combustion engine and an electric motor, a fuel tank, and the like. An object of the present invention is to provide a vehicle component mounting structure capable of reducing the cost and simplifying the manufacturing process by optimizing the component arrangement configuration.

  In order to solve the above-described problems, a vehicle component mounting structure according to the present invention includes an internal combustion engine (2) and an electric motor (3) as drive sources (2, 3) disposed in front of a vehicle compartment (6). And a device (60) including a battery for supplying electric power to the electric motor (3) and a first floor provided at a position including a lower side of the other seat (16) positioned on the rear side of the front seat (13). A component mounting space (53) and a second component mounting space (57) provided under the floor including the lower side of the front seat (13), the first component mounting space (53) and the second component mounting The space (57) is a space surrounded by the vehicle body frame (31), and the vehicle (1) includes a first fuel tank (54) capable of storing fuel for the internal combustion engine (2) as a first component mounting space. (53) and a second fuel tank (58 having the same capacity or a small capacity as the first fuel tank (54). In the second component mounting space (57), and the second component mounting space (57) out of the first fuel tank (54) and the second fuel tank (58). Only the second fuel tank (58) mounted on the vehicle is provided.

  The vehicle component mounting structure according to the present invention shares a first fuel tank for a vehicle having only an internal combustion engine as a drive source and a second fuel tank for a hybrid vehicle having both the internal combustion engine and an electric motor as drive sources. By adopting a structure that can be selectively mounted on the body frame, it is possible to manufacture a plurality of types of vehicles while suppressing the types of parts to be prepared. Therefore, it is possible to reduce the manufacturing cost of the vehicle and save labor in the manufacturing process. That is, it is possible to reduce the cost by using a vehicle body frame in common with a vehicle having a different structure between a vehicle having only an internal combustion engine as a drive source and a vehicle having an internal combustion engine and an electric motor. In addition, a part of the vehicle seat arrangement and the vehicle body structure can be shared.

  Further, the second component mounting space in which the second fuel tank can be mounted is restricted in the height direction in terms of the front seat (driver's seat) as compared to the first component mounting space in which the first fuel tank can be mounted. And the width must be within the skeleton of the car body. Therefore, the capacity that can be secured in the second fuel tank may be limited to a smaller capacity than the capacity that can be secured in the first fuel tank. On the other hand, in the case of a vehicle having both an internal combustion engine and an electric motor as a drive source, the capacity of the fuel tank is reduced by the amount of assistance of the driving force by the electric motor compared to a vehicle having only the internal combustion engine as a drive source. A smaller capacity can be set.

  In the vehicle component mounting structure, the first component mounting space (53) is installed in the fuel pipe (61) for supplying fuel from the second fuel tank (58) to the internal combustion engine (2). A canister (68) may be mounted at least.

  According to this configuration, when the second fuel tank is mounted in the second component mounting space and the first component mounting space is an empty space, the canister is mounted in the first component mounting space that is the empty space. Thus, a mounting space for a conventional canister can be made free. Therefore, the foot space in the passenger compartment can be secured more accordingly. Also, if other parts are mounted in the conventional canister mounting space, the component mounting space can be effectively utilized.

  In the vehicle component mounting structure described above, the first component mounting space (53) may be equipped with a device (60) including a capacitor that supplies electric power to the electric motor (3).

  According to this configuration, a device including a capacitor is mounted instead of the first fuel tank in the first component mounting space in which the first fuel tank can be mounted. A capacitor for increasing the driving capability of a vehicle having an electric motor has a relatively large volume, so that it cannot fit in the second mounting space below the front seat, and if it is mounted in the second mounting space, a sufficiently low floor of the vehicle There is a possibility that it cannot be realized. Therefore, the second fuel tank is disposed in the second mounting space, and the device including the battery is mounted in the first mounting space that is an empty space. According to this, since it is possible to increase the size of the battery, it is possible to reduce the size even in a vehicle in which the driving force of the electric motor is the main force.

  The vehicle component mounting structure includes the wiring (63) for connecting the electric motor (3) and the device (60) including the capacitor, and at least part of the wiring (63) is the second fuel tank (58). ) Along the outer shape of the second component mounting space (57).

  The second fuel tank is mounted in the second component mounting space surrounded by the vehicle body frame to absorb shocks in the event of a vehicle collision. The wiring connecting the motor and the device including the capacitor is mounted on this second component. If it arrange | positions along the 2nd fuel tank in space, it can be set as the arrangement | positioning which a wiring is hard to receive an impact at the time of a vehicle collision.

  The vehicle component mounting structure includes the under cover (55) installed in the opening on the lower surface side of the first component mounting space (53), and the under cover (55) is provided in the first component mounting space (53). A first frame member (42) constituting a part of a vehicle body frame (31) provided on the front side of the vehicle body and a part of a vehicle body frame (31) provided on the rear side of the first component mounting space (53). A connecting frame material (55a) for connecting the second frame material (44) may be included.

  According to this configuration, by providing the under cover, it is possible to prevent air from being caught in the first component mounting space while the vehicle is running. In addition, since the frame material included in the under cover can connect the first frame member provided on the front side of the first component mounting space and the second frame member provided on the rear side of the first component mounting space, The body frame can be reinforced. Therefore, the tolerance with respect to the collision of a vehicle can be improved.

  In the vehicle component mounting structure described above, the vehicle in which the first fuel tank (54) is mounted in the first component mounting space (53) and the second fuel tank (58) in the second component mounting space (57). The arrangement positions of the first fuel tank (54) and the second fuel tank (58) may be set so that the center of gravity (G) of the vehicle is substantially the same position with the mounted vehicle.

In the case of a vehicle including an internal combustion engine and an electric motor as a drive source, a fuel tank is mounted in the second component mounting space. On the other hand, in a vehicle including only an internal combustion engine as a drive source, the fuel tank is mounted in the first component mounting space. However, in this case, the first and second fuel tanks of the first and second fuel tanks can be secured so that an optimal center of gravity position can be secured in both a vehicle having only an internal combustion engine as a drive source and a vehicle having an internal combustion engine and an electric motor as drive sources. If the position is set, it is possible to ensure a constant center of gravity position regardless of the vehicle type.
In addition, the code | symbol in said parenthesis shows the code | symbol of the component in embodiment mentioned later as an example of this invention.

  According to the vehicle component mounting structure of the present invention, a vehicle body frame can be shared between a vehicle having only an internal combustion engine as a drive source and a vehicle having both the internal combustion engine and an electric motor, and the component mounting structure can be optimized. Thus, it is possible to reduce the cost and simplify the manufacturing process.

1 is a schematic configuration diagram (side view) of a vehicle (hybrid vehicle) according to a first embodiment of the present invention. It is the top view which looked at the body frame and the floor panel from the lower part. It is a schematic perspective view which shows the arrangement structure of the fuel tank and IPU mounted in the vehicle. It is a figure which shows the modification of the vehicle of 1st Embodiment. It is a schematic block diagram (side view) of the vehicle (engine vehicle) concerning 2nd Embodiment of this invention. It is the top view which looked at the body frame and the floor panel from the lower part. 1 is a schematic perspective view showing an arrangement configuration of a fuel tank and the like mounted on a vehicle.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description, “front”, “rear”, “left”, “right”, “upper”, and “lower” all follow the direction seen from the driver of the vehicle. Further, Fr and Rr are the front side and the rear side in the traveling direction of the vehicle, respectively, and L and R indicate the left side and the right side in the vehicle width direction, respectively.

[First Embodiment]
FIG. 1 is a schematic configuration diagram (side view) of a vehicle according to a first embodiment of the present invention. FIG. 2 is a plan view of the body frame and the floor panel as viewed from below. FIG. 3 is a schematic perspective view showing the arrangement of components (fuel tank and IPU) mounted on the vehicle. In FIG. 3, illustration of a body frame 31 and a floor panel 33, which will be described later, is omitted. As shown in FIG. 1, a vehicle 1-1 according to the present embodiment includes front wheels Wf and Wf and rear wheels Wr and Wr, and an engine as a drive source mounted on the front side of a vehicle body frame 31 (see FIG. 2). An internal combustion engine) 2 and a three-phase motor (electric motor) 3 are provided. The engine 2 and the motor 3 are accommodated in an engine room 5 provided outside the vehicle compartment 6 on the front side of the vehicle 1-1.

  The vehicle body frame 31 includes a pair of side sills 34 that extend along the front-rear direction on the outer side in the vehicle width direction of the vehicle 1-1, and a pair of front frames 35 that extend forward between the side sills 34. Is provided. The front frame 35 extends forward from the front end portion of the side sill 34, and the front end portion of the side sill 34 and the rear end portion of the front frame 35 are joined via an outrigger 36. In addition, a front cross member 41 that spans between the front frames 35 is joined to the rear end portion of the front frame 35. A middle cross member 42 extending in the vehicle width direction and spanned between the side sills 34 is installed at an intermediate portion between the pair of side sills 34.

  A pair of rear side frames 43 extending along the front-rear direction are joined to the rear end portion of the side sill 34. The rear side frames 43 extend in parallel toward the rear, and a rear cross member 44 is joined so as to span the front sides thereof.

  A floor panel 33 is provided on the body frame 31 so as to cover substantially the entire body frame 31. The floor panel 33 is formed, for example, by press-molding a steel plate, and a bead is formed at an appropriate position in order to increase bending rigidity. The floor panel 33 includes a front floor 33a formed from the vicinity of the rear end of the front frame 35 to the middle cross member 42 in the front-rear direction, a middle floor 33b formed from the middle cross member 42 to the rear cross member 44, And a rear floor 33c that covers from the rear cross member 44 to the rear end of the rear side frame 43.

  The floor panel 33 is a member in which a floor tunnel 32 for securing bending rigidity in the front-rear direction of the vehicle body is integrally formed. The floor tunnel 32 has a trapezoidal cross section extending in the front-rear direction at the center in the vehicle width direction of the floor panel 33.

  As shown in FIG. 1, a front seat (front seat) 13 is installed at the center of the front floor 33 a in the passenger compartment 6. In front of the front seat 13 on the front floor 33a, a front seat step portion 17 on which a passenger's foot seated on the front seat 13 can be placed is formed. A center mounting space (second component mounting space) 57 is formed below the front seat 13 on the front floor 33a. The center mounting space 57 is located in the center part of the vehicle 1-1 in the front-rear direction and the width direction, and at least a part thereof overlaps below the front seat 13 (directly below position) when viewed from directly above the front seat 13. Are arranged as follows. The center mounting space 57 is an area surrounded by the side sill 34, the front cross member 41, the middle cross member 42, and the front floor 33a. In the center mounting space 57, a center tank (second fuel tank) 58 for storing fuel supplied to the engine 2 is mounted.

  A rear seat (rear seat) 16 is installed at the rear part on the middle floor 33b in the passenger compartment 6. Further, a rear seat step portion 18 is formed in front of the rear seat 16 on the middle floor 33b. The rear seat step portion 18 can be placed on the foot of an occupant seated on the rear seat 16.

  A rear mounting space (first component mounting space) 53 is formed below (directly below) the rear seat 16 on the middle floor 33b. The rear mounting space 53 is a space surrounded by the side sill 34, the middle cross member 42, the rear cross member 44, and the front floor 33a. In the vehicle 1-1 of the present embodiment, no components other than a canister 68 described later are mounted in the rear mounting space 53, and the rear mounting space 53 is basically an empty space. In addition, an under cover 55 is installed at the opening on the lower surface side of the rear mounting space 53 to cover the lower surface side of the rear mounting space 53 by closing the opening. The under cover 55 is a plate-like member that covers the lower surface side of the rear mounting space 53, and as shown in FIG. 2, a middle cross member (first frame material) 42 provided on the front side of the rear mounting space 53, It has a connecting frame material 55a for connecting a rear cross member (second frame material) 44 provided on the rear side of the rear mounting space 53.

  The rear floor 33 c extends rearward from the rear end portion of the middle floor 33 b and extends to the rear end portion of the rear side frame 43. On the rear floor 33c on the rear side of the rear seat 16, an IPU (intelligent power unit: electric device for electric motor) 60 is accommodated. The IPU 60 is a unit in which each electric device such as a battery module (capacitor) in which electric power to be supplied to the motor 3 is stored, an inverter unit, and a DC-DC converter unit (both not shown) are unitized in a casing. It is. The inverter unit converts direct current to alternating current when supplying power to the motor from the battery of the direct current power source. Further, when the vehicle 1-1 is decelerated, when the engine output or the kinetic energy of the vehicle 1-1 is converted into electrical energy and stored in the battery, the regenerative power generated by the motor functioning as a generator is exchanged with AC. Is converted to direct current and stored in the battery. The DC-DC converter unit steps down the high-voltage direct current voltage converted by the inverter unit. The space above the IPU 60 is a luggage space 65.

  Further, in the vehicle 1-1 of the present embodiment, a fuel supply pipe (fuel pipe) 61 for supplying fuel from the center tank 58 to the engine 2, and exhaust for guiding exhaust gas of the engine 2 to the rear part of the vehicle 1-1. A tube 66 and a high voltage line 63 (see FIG. 3) for electrically connecting the motor and the IPU 60 are provided. These fuel supply pipe 61, exhaust pipe 66, and high-pressure line 63 are all arranged along the lower surface of the floor panel 33. In FIGS. 1 and 2, the high-voltage line 63 is not shown.

  The exhaust pipe 66 is connected to the downstream side of an exhaust manifold (not shown) that collects exhaust gas discharged from each cylinder of the engine 2. A converter (not shown) for purifying exhaust gas is connected to the exhaust pipe 66, and a sub muffler (silencer) 69-1 and a main muffler (silencer) 69-2 are installed downstream of the converter. Has been.

  The exhaust pipe 66 extends toward the rear of the vehicle along the lower surface of the floor panel 33, straddles the front cross member 41, and then faces outward in the vehicle width direction on the front side of the center tank 58 (center mounting space 57). And extends between the front cross member 41 and the center tank 58 toward the outside in the vehicle width direction. Further, the exhaust pipe 66 is bent rearward after straddling the front frame 35 in the vehicle width direction. The exhaust pipe 66 extends along the side sill 34 toward the rear of the vehicle. The sub muffler 69-1 provided in the exhaust pipe 66 is disposed on the side portion in the vehicle width direction in the rear mounting space 53. Furthermore, the downstream side of the sub muffler 69-1 in the exhaust pipe 66 extends along the inside of the rear side frame 43, and is connected to the main muffler 69-2 at the rear end of the vehicle 1-1. From the main muffler 69-2, an exhaust port 70 for releasing the exhaust gas flowing through the exhaust pipe 66 to the atmosphere opens toward the rear of the vehicle 1-1.

  The fuel supply pipe 61 extends from a center tank 58 mounted in the center mounting space 57 toward the rear side of the vehicle and is connected to a canister 68 disposed in the rear mounting space 53. Further, the fuel supply pipe 61 coming out of the canister 68 extends toward the front side of the vehicle and is connected to the engine 2 in the engine room 5. Therefore, the canister 68 installed on the fuel supply pipe 61 for supplying fuel from the center tank 58 to the engine 2 is mounted in the rear mounting space 53.

  The high voltage line 63 is a wiring that electrically connects the motor 3 in the engine room 5 and the IPU 60 provided on the rear side of the vehicle 1-1, and corresponds to the U phase, V phase, and W phase of the motor 3. It is a three-phase wire. The high-voltage line 63 is drawn from the terminal portion of the motor 3 and extends inside the floor tunnel 32 toward the rear of the vehicle 1-1, and on the front side of the center tank 58 (center mounting space 57) on the outside in the vehicle width direction. It is bent toward. Thereafter, the high-voltage line 63 extends rearward along one end side in the vehicle width direction of the center tank 58 in the center mounting space 57, and is further bent inward in the vehicle width direction and led to the vicinity of the center portion in the vehicle width direction. ing. The high-voltage line 63 led to the vicinity of the center in the vehicle width direction extends again toward the rear side of the floor tunnel 32 at the rear of the center mounting space 57 (center tank 58). The high voltage line 63 is connected to the IPU 60 located further rearward of the rear mounting space 53.

  As described above, in the vehicle 1-1 of the present embodiment, a part of the high voltage line (wiring) 63 that connects the motor 3 and the IPU 60 mounted in the rear mounting space 53 is centered along the outer periphery of the center tank 58. It is disposed in the mounting space 57. The center tank 58 is disposed in a center mounting space 57 surrounded by the vehicle body frame 31 to absorb shocks in the event of a vehicle collision. A high voltage line 63 connecting the motor 3 and the IPU 60 is connected to the center mounting space 57. By arranging along the center tank 58 inside, the high voltage line 63 can be arranged so as not to receive an impact at the time of a vehicle collision.

  The vehicle 1-1 according to the present embodiment includes the rear mounting space 53 and the center mounting space 57, a rear tank (not shown in the first embodiment) that can be mounted in the rear mounting space 53, and a center mounting. In this structure, the center tank 58 that can be mounted in the space 57 is mounted on the common vehicle body frame 31. Here, a rear tank is not mounted in the rear mounting space 53, and a center tank 58 is mounted in the center mounting space 57. The capacity of the center tank 58 that can be mounted in the center mounting space 57 is set to be the same as or smaller than the capacity of the rear tank that can be mounted in the rear mounting space 53.

  Compared with the rear mounting space 53 in which the rear tank is mounted, the center mounting space 57 in which the center tank 58 is mounted has a dimension restriction in the height direction in terms of the seat of the front seat 13 (driver's seat), and the lateral width is also the body frame. 31 must be accommodated. Therefore, the capacity that can be secured in the center tank 58 is limited as compared with the capacity that can be secured in the rear tank. On the other hand, in the vehicle (hybrid vehicle) 1 according to this embodiment in which both the engine 2 and the motor 3 are mounted as drive sources, the motor is compared with a vehicle (engine vehicle) in which only the engine 2 is mounted as a drive source. The amount of the fuel tank can be set to a smaller capacity by the amount of assistance of the driving force by 3. That is, the vehicle 1-1 of the present embodiment, which is a hybrid vehicle, has better fuel efficiency than the engine vehicle, so that the capacity of the fuel tank is within an appropriate range.

  In the vehicle 1-1 of the present embodiment, only the center tank 58 among the rear tank and the center tank 58 is mounted, and the rear mounting space 53 is installed in the fuel supply pipe 61 instead of the rear tank. The canister 68 and a sub muffler 69-1 installed in an exhaust pipe 66 through which exhaust from the engine 2 circulates are disposed. That is, since the rear mounting space 53 in which the rear tank can be mounted is an empty space, the canister 68 and the sub muffler 69-1 are arranged in the rear mounting space 53, and effective use of the empty space by not mounting the rear tank is achieved. I try to figure it out.

  In addition, the vehicle according to the present embodiment includes an under cover 55 installed in the opening on the lower surface side of the rear mounting space 53. The under cover 55 includes a connecting frame member 55 a that connects the middle cross member 42 provided on the front side of the rear mounting space 53 and the rear cross member 44 provided on the rear side of the rear mounting space 53. . By providing the under cover 55 having such a frame material 55a, it is possible to improve the resistance to the impact received by the vehicle body at the time of rear collision. Therefore, the collision safety of the vehicle can be improved.

  Further, in the vehicle 1-1 of the present embodiment, the vehicle's center of gravity G (turning center) (FIG. 2) includes a vehicle having a rear tank mounted in the rear mounting space 53 and a vehicle having a center tank 58 mounted in the center mounting space 57. The positions of the center tank 58 and the rear tank are set so that the positions are substantially the same.

  In the case of the vehicle 1-1 including the engine 2 and the motor 3 as the driving source, the center tank 58 is mounted in the center mounting space 57, while the vehicle including only the engine as the driving source (the vehicle 1-2 of the second embodiment). ), The rear tank is mounted in the rear mounting space 53. In that case, the rear tank is optimal for both the vehicle 1-1 having the engine 2 and the motor 3 as drive sources and the vehicle having only the engine as a drive source. If the positions of the rear tank and the center tank 58 are set so that the position of the center of gravity can be secured, it becomes possible to secure a constant position of the center of gravity regardless of the vehicle type.

  FIG. 4 is a diagram illustrating a modification of the vehicle according to the first embodiment. In the vehicle 1-1 shown in FIG. 1, the IPU 60 including a capacitor for supplying electric power to the motor 3 is mounted not in the rear floor 33 c but in the rear mounting space 53. That is, in this modification, the IPU 60 is mounted in the rear mounting space 53 in which the rear tank can be mounted instead of the rear tank. Since the IPU 60 including the battery for increasing the driving capability of the hybrid vehicle has a relatively large volume, it cannot be accommodated in the center mounting space 57 below the front seat 13. There is a possibility that the floor cannot be lowered. Therefore, as shown in FIG. 4, a center tank 58 is disposed in the center mounting space 57, and the IPU 60 is mounted in the rear mounting space 53, which is an empty space. According to this, since the storage battery (battery unit) included in the IPU 60 can be increased in size, it is possible to reduce the size even in a hybrid vehicle in which the driving force of the motor 3 is the main force.

  In the present embodiment, the case where the canister 68 and the sub muffler 69-1 are installed in the rear mounting space 53 is shown. However, as the mounting structure according to the present invention, at least the canister 68 is installed in the rear mounting space 53. The sub muffler 69-1 is not necessarily installed in the rear mounting space 53.

[Second Embodiment]
Next, a second embodiment of the present invention will be described. In the description of the second embodiment and the corresponding drawings, the same or corresponding components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted below. Further, matters other than those described below and matters other than those illustrated are the same as those in the first embodiment.

  FIG. 5 is a schematic configuration diagram (side view) of the vehicle 1-2 according to the second embodiment of the present invention. FIG. 6 is a plan view of the body frame and the floor panel as viewed from below. FIG. 7 is a schematic perspective view showing an arrangement configuration of a fuel tank and the like mounted on the vehicle. The vehicle 1-2 shown in these drawings does not include a motor (electric motor) 3 as a drive source housed in the engine room 5 as compared with the vehicle (hybrid vehicle) 1-1 of the first embodiment. Only an engine (internal combustion engine: gasoline engine) 2 is provided. Further, since the motor 3 is not provided, accessory parts such as the IPU 60 and the high voltage line 63 for supplying power to the motor 3 are not provided.

  In the vehicle 1-2 of the present embodiment, a rear tank (first fuel tank) 54 for storing fuel supplied to the engine 2 is mounted in the rear mounting space 53 provided below the rear seat 16. Yes. That is, the vehicle 1 of the present embodiment includes a rear tank mounted in the rear mounting space 53 among a rear tank 54 that can be mounted in the rear mounting space 53 and a center tank 58 (see FIGS. 1 to 3) that can be mounted in the center mounting space 57. 54.

  Moreover, in the vehicle 1-2 of this embodiment, the fuel tank is not mounted in the center mounting space 57. In the center mounting space 57, a canister 68 attached to the fuel supply pipe 61 and a sub muffler 69-1 attached to the exhaust pipe 66 are mounted. The canister 68 is disposed at a substantially central portion in the vehicle width direction of the center mounting space 57, and the sub muffler 69-1 is disposed at a side portion (right side portion) of the center mounting space 57 in the vehicle width direction. In addition, an under cover 59 that closes the opening is installed in the opening on the lower surface side of the center mounting space 57. The under cover 59 is a plate material that covers the lower surface side of the center mounting space 57, and as shown in FIG. 6, a front cross member (first frame material) 41 provided on the front side of the center mounting space 57, and the center mounting space. 57 has a connecting frame member 59a for connecting a middle cross member (second frame member) 42 provided on the rear side of the connector 57.

  The vehicle 1-2 of the present embodiment includes a rear mounting space 53 disposed below the rear seat 16 and a center mounting space 57 disposed below the front seat 13, and a rear tank that can be mounted in the rear mounting space 53. 54 and a center tank 58 that can be mounted in the center mounting space 57 are mounted on the common vehicle body frame 31. The vehicle 1-2 includes only the rear tank 54 mounted in the rear mounting space 53 of the rear tank 54 and the center tank 58, and a canister 68 attached to the fuel supply pipe 61 is disposed in the center mounting space 57. It is installed.

  As described above, the vehicle 1-2 of the present embodiment is similar to the vehicle 1 of the first embodiment in that the rear tank 54 for a vehicle (engine vehicle) including only the engine 2 as a drive source, and the engine 2 and the motor as the drive source. 3, a center tank 58 for a vehicle (hybrid vehicle) including both of them is configured to be selectively mountable on a common vehicle body frame 31. As a result, a plurality of types of vehicles can be manufactured while suppressing the number of types of parts, so that the manufacturing cost of the vehicles can be reduced and the manufacturing process can be saved. In addition, when the rear tank 54 is mounted, the center mounting space 57 becomes an empty space. By mounting the canister 68 in the center mounting space 57, which is the empty space, it is possible to effectively use the component arrangement space. .

  Further, in the vehicle 1-2 of the present embodiment, the front cross member 41 provided on the front side of the center mounting space 57 and the middle cross member 42 provided on the rear side of the center mounting space by the frame material 59a of the under cover 59. Can be connected, so that it is possible to improve resistance to a vehicle collision.

  Further, the vehicle 1-2 of the present embodiment includes a fuel supply pipe 61 for supplying fuel from the rear tank 54 to the engine 2, and the fuel supply pipe 61 is directed from the engine 2 to the rear tank 54 in the rear mounting space 53. It extends in a straight line and is disposed so as to cross the center mounting space 57 in the longitudinal direction of the vehicle.

  According to this configuration, by suppressing the extension distance of the fuel supply pipe 61 to be short, the cost can be reduced, and the weight of the vehicle and the configuration can be simplified. Further, the fuel supply pipe 61 is disposed so as to cross the center mounting space 57 in the front-rear direction, so that the center mounting space 57 can be effectively used, and the arrangement of components mounted on the vehicle 1-2 can be optimized and saved. Space can be achieved.

  Also in the present embodiment, the capacity of the center tank 58 may be limited to a smaller capacity than the capacity of the rear tank 54 as in the first embodiment. On the other hand, in the case of a vehicle (engine vehicle) including only the engine 2 as a drive source, such as the vehicle 1-2 of the present embodiment, a vehicle (hybrid vehicle) including both the engine and the electric motor as drive sources; In comparison, it is necessary to set the capacity of the fuel tank to a larger capacity because the driving force is not assisted by the motor. Therefore, there is a possibility that the capacity of the center tank 58 is insufficient, so that the fuel necessary for driving the vehicle 1-2 can be secured by mounting the rear tank 54.

  Also in the vehicle 1-2 of the present embodiment, the vehicle 1-2 in which the rear tank 54 is mounted in the rear mounting space 53 and the vehicle 1 in which the center tank 58 is mounted in the center mounting space 57 (vehicle 1 of the first embodiment). Therefore, the arrangement positions of the center tank 58 and the rear tank 54 are set so that the center of gravity G (see FIG. 6) of the vehicle is substantially the same position. That is, also in the vehicle 1-2 of the present embodiment, by setting the position of the rear tank 54 so that an optimal center of gravity position can be secured in both the vehicle 1-2 and the vehicle 1 of the first embodiment, Regardless of this, it is possible to ensure a certain center of gravity position.

  In the present embodiment, the case where the canister 68 and the sub muffler 69-1 are installed in the center mounting space 57 is shown. However, in addition to this, only the canister 68 is installed in the center mounting space 57, and the sub muffler 69- 1 can be installed at a place other than the center mounting space 57.

  Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the technical idea described in the claims and the specification and drawings. Is possible.

1-1 Vehicle (hybrid vehicle)
1-2 Vehicle (Engine vehicle)
2 Engine (Internal combustion engine)
3 Motor (electric motor)
5 Engine room 6 Car compartment 13 Front seat (front seat)
16 Rear seat (rear seat)
17 Front seat step portion 18 Rear seat step portion 31 Body frame 32 Floor tunnel 33 Floor panel 34 Side sill 35 Side frame 36 Outrigger 41 Front cross member 42 Middle cross member 43 Rear side frame 44 Rear cross member 53 Rear mounting space (first component mounting) space)
54 Rear tank (first fuel tank)
55 Undercover 55a Frame material 57 Center mounting space (second component mounting space)
58 Center tank (second fuel tank)
59 Under cover 59a Frame material 60 IPU (device including battery)
61 Fuel supply pipe (fuel piping)
63 High voltage line (wiring)
65 Luggage space 66 Exhaust pipe (exhaust path)
68 Canister 69-1 Sub muffler 69-2 Main muffler 70 Exhaust port

Claims (6)

A vehicle component mounting structure,
An internal combustion engine and an electric motor as a drive source disposed in front of the passenger compartment;
An apparatus including a capacitor for supplying electric power to the electric motor;
A first component mounting space provided under the floor at a position including the underside of another seat located behind the front seat;
A second component mounting space provided under the floor at a position including the lower side of the front seat,
The first component mounting space and the second component mounting space are spaces surrounded by a vehicle body frame, and the vehicle has a first fuel tank capable of storing fuel for the internal combustion engine as the first component mounting space. And a structure in which a second fuel tank having the same capacity or a small capacity as the first fuel tank is mounted in the second component mounting space can be selectively adopted.
A vehicle component mounting structure comprising only the second fuel tank mounted in the second component mounting space among the first fuel tank and the second fuel tank. 2. The vehicle according to claim 1, wherein at least a canister installed in a fuel pipe for supplying fuel from the second fuel tank to the internal combustion engine is mounted in the first component mounting space. Component mounting structure. The vehicle component mounting structure according to claim 1 or 2, wherein a device including the capacitor is mounted in the first component mounting space. Comprising wiring for connecting the electric motor and the device including the capacitor;
4. The vehicle component according to claim 1, wherein at least a part of the wiring is arranged in the second component mounting space along the outer shape of the second fuel tank. 5. Mounting structure. An under cover installed in an opening on a lower surface side of the first component mounting space;
The under cover constitutes a first frame material constituting a part of a vehicle body frame provided on the front side of the first part mounting space and a part of the vehicle body frame provided on the rear side of the first part mounting space. The vehicle component mounting structure according to any one of claims 1 to 4, further comprising a connecting frame material that connects the second frame material to be connected. The vehicle in which the first fuel tank is mounted in the first component mounting space and the vehicle in which the second fuel tank is mounted in the second component mounting space so that the center of gravity of the vehicle is substantially the same position. The vehicle component mounting structure according to any one of claims 1 to 5, wherein an arrangement position of the first fuel tank and the second fuel tank is set.

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