JP2014208517A - Component loading structure of vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a component loading structure of a vehicle which enables 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 the cost reduction and simplification of the manufacturing process through 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 that is loaded in the second component loading space 57 to be exchangeably loaded in a common vehicle body frame. A vehicle 1-1 includes only an engine 2 as a driving source and includes only the first fuel tank 54 loaded in the first component loading space 53. In the second component loading space 57, a canister 68 installed at a fuel pipeline 61 is loaded.

Description

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

  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) as a drive source (2) disposed in front of the vehicle compartment (6), or an internal combustion engine (2) and An electric motor (3), a first component mounting space (53) provided below the floor at a position including the lower side of the other seat (16) located behind the front seat (13), and the front seat (13) A second component mounting space (57) provided under the floor at a position including the lower side of the first component mounting space (53) and the second component mounting space (57) surrounded by the vehicle body frame (31). The vehicle (1) has a structure in which a first fuel tank (54) capable of storing fuel for the internal combustion engine (2) is mounted in the first component mounting space (53), and the first fuel tank A structure in which a second fuel tank (58) having a size different from that of (54) is mounted in the second component mounting space (57). The vehicle is provided with an internal combustion engine (2) as a drive source, and the first component mounting space (53) among the first fuel tank (54) and the second fuel tank (58). Only the first fuel tank (54) mounted on the second component mounting space (57), and a fuel pipe for supplying fuel from the first fuel tank (54) to the internal combustion engine (2). The canister (68) installed in (61) is mounted at least.

  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. The vehicle body frame can be mounted and mounted. 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. That is, it is possible to reduce costs by using a common frame for a vehicle having only an internal combustion engine as a drive source and a vehicle having a different configuration for a vehicle having an internal combustion engine and an electric motor. . In addition, part of the vehicle seat arrangement and the vehicle body structure can be shared.

  In the vehicle component mounting structure according to the present invention, the vehicle includes only an internal combustion engine as a drive source, and the first fuel tank is mounted in the first component mounting space, and the second component mounting space is empty. When the canister is mounted in the second component mounting space, which is the empty space, the mounting space for the conventional canister can be made free. Therefore, the foot space in the passenger compartment can be secured more accordingly. Further, if other parts are arranged in the conventional canister mounting space, the component arrangement space can be effectively utilized.

  The vehicle component mounting structure includes the under cover (59) installed in the opening on the lower surface side of the second component mounting space (57), and the under cover (59) is provided in the second component mounting space (57). A first frame member (41) constituting a part of a vehicle body frame (31) provided on the front side of the vehicle and a part of a vehicle body frame (31) provided on the rear side of the second component mounting space (57). A connecting frame material (59a) for connecting the second frame material (42) may be included.

  According to this configuration, by providing the under cover, it is possible to prevent air from being caught in the second component mounting space while the vehicle is running. Further, since the frame material included in the under cover can connect the first frame material provided on the front side of the second component mounting space and the second frame material provided on the rear side of the second component mounting space, Resistance to vehicle collisions can be improved.

  In the vehicle component mounting structure described above, the fuel pipe (61) for supplying fuel from the first fuel tank (54) to the internal combustion engine (2) has a first component mounting space ( 53) extends linearly toward the first fuel tank (54) and may be disposed so as to cross at least the second component mounting space (57) in the longitudinal direction of the vehicle.

  According to this configuration, it is possible to reduce the cost and the weight of the vehicle and to simplify the configuration by keeping the extension distance of the fuel pipe short. In addition, by arranging the fuel piping so as to cross the second component mounting space in the front-rear direction, the second component mounting space can be effectively used, and the arrangement of the components mounted on the vehicle can be optimized and the space can be saved. Can be planned.

  In the vehicle component mounting structure described above, the capacity of the second fuel tank (54) may be set to be smaller than the capacity of the first fuel tank (58).

  The second component mounting space in which the second fuel tank is mounted is restricted in the height direction in terms of the front seat (driver's seat) in comparison with the first component mounting space in which the first fuel tank is mounted, and The width needs to be within the skeleton of the car body. For this reason, the capacity that can be secured in the second fuel tank may be set to be smaller than the capacity that can be secured in the first fuel tank. On the other hand, in the case of a vehicle having only an internal combustion engine as a driving source, the capacity of the fuel tank can be increased by the amount of driving power assistance by the electric motor compared to a vehicle having both an engine and an electric motor as the driving source. It is necessary to set a large capacity. For this reason, when the capacity of the second fuel tank is set to a small capacity, the capacity of the second fuel tank may be insufficient. Therefore, the fuel required for driving the vehicle is secured by installing the first fuel tank. It can be so.

  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.

  According to this configuration, in the case of a vehicle including an internal combustion engine and an electric motor as a drive source, the fuel tank is mounted in the second component mounting space, while in the case of a vehicle including only the internal combustion engine as a drive source, the first The fuel tank is mounted in the component mounting space. In this case, the first center of gravity position can be ensured in both the vehicle having only the internal combustion engine as the drive source and the vehicle having the internal combustion engine and the electric motor as the drive source. If the position of the second fuel tank is set, a constant center of gravity position can be secured regardless of the vehicle type.

  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 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 configuration of the fuel tank mounted in the vehicle. It is a schematic block diagram (side view) of the 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. 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 2nd Embodiment.

  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 tanks) 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. The engine 2 is 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.

  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 middle floor 33b.

  In the vehicle 1-1 of the present embodiment, no components other than the canister 68 described later are mounted in the center mounting space 57, and the center mounting space 57 is basically an empty space. In addition, an under cover 59 that covers the lower surface side of the center mounting space 57 by closing 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-like member that covers the lower surface side of the center mounting space 57, and as shown in FIG. 2, a front cross member (first frame material) 41 provided on the front side of the center mounting space 57, It has a frame material 59 a for connecting the middle cross member (second frame material) 42 provided on the rear side of the center mounting space 57.

  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. A luggage space 65 is formed on the rear floor 33 c on the rear side of the rear seat 16.

  Further, in the vehicle 1-1 of the present embodiment, a fuel supply pipe (fuel pipe) 61 for supplying fuel from the rear tank 54 to the engine 2 and an exhaust pipe for guiding exhaust gas of the engine 2 to the rear portion of the vehicle 1-1. 66. The fuel supply pipe 61 and the exhaust pipe 66 are arranged along the lower surface of the floor panel 33.

  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. The exhaust pipe 66 is connected to a converter (not shown) for purifying exhaust gas, and a sub muffler (silencer) 69-1 and a main muffler (silencer) 69-2 are provided downstream of the converter. is set up.

  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 bends and extends outward in the vehicle width direction on the front side of the center mounting space 57. Exist. Further, the exhaust pipe 66 is bent rearward and extends along the side sill 34 toward the rear of the vehicle. The sub muffler 69-1 provided in the exhaust pipe 66 is arranged on the side portion in the vehicle width direction in the center mounting space 57. 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 is disposed substantially linearly along the front-rear direction of the vehicle between the engine 2 in the engine room 5 and the rear tank 54 mounted in the rear mounting space 53. 57 is disposed across the vehicle in the front-rear direction. A canister 68 is installed in the middle of the fuel supply pipe 61.

  The vehicle 1-1 according to the present embodiment includes the rear mounting space 53 and the center mounting space 57, and includes a rear tank 54 that can be mounted in the rear mounting space 53, and a center tank that can be mounted in the center mounting space 57 ( This is a structure that can be mounted on a common vehicle body frame 31. Here, a center tank is not mounted in the center mounting space 57 but a rear tank 54 is mounted in the rear mounting space 53. Further, the capacity of the center tank that can be mounted in the center mounting space 57 may be set to be smaller than the capacity of the rear tank 54 that can be mounted in the rear mounting space 53.

  Compared with the rear mounting space 53 in which the rear tank 54 is mounted, the center mounting space 57 in which the center tank is mounted has dimensional restrictions 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 is limited as compared with the capacity that can be secured in the rear tank 54. On the other hand, in the vehicle (engine vehicle) 1-1 according to this embodiment in which only the engine 2 is mounted as a drive source, the motor is compared with a vehicle (hybrid vehicle) in which both the engine and the motor are mounted as drive sources. The amount of fuel tank needs to be set to a larger capacity because there is no driving force assistance.

  In the vehicle 1-1 of the present embodiment, only the rear tank 54 is mounted among the rear tank 54 and the center tank. The center mounting space 57 is installed in the fuel supply pipe 61 instead of the center 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 center mounting space 57 in which the center tank can be mounted is an empty space, the canister 68 and the sub muffler 69-1 are arranged in the center mounting space 57, and the empty space due to the absence of the center tank is effective. I try to use it.

  Further, the vehicle according to the present embodiment includes an under cover 59 installed in the opening on the lower surface side of the center mounting space 57. The under cover 59 has a connecting frame material 59 a that connects 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 57. . By providing the under cover 59 having such a frame material 59a, it is possible to improve resistance to an impact received by the vehicle body at the time of collision from the front and rear of the vehicle. 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 in which the rear tank 54 is mounted in the rear mounting space 53 and a vehicle in which the center tank is mounted in the center mounting space 57. The positions of the center tank and the rear tank 54 are set so that they are substantially the same position.

  In the case of the vehicle 1-1 including only the engine 2 as a drive source, a vehicle including the engine 2 and the motor 3 as drive sources (vehicle 1-2 of the second embodiment) while the rear tank 54 is mounted in the rear mounting space 53. ), The center tank is mounted in the center mounting space 57. In this case, the center of gravity is optimal for both the vehicle 1-1 having only the engine 2 as a driving source and the vehicle having an engine and a motor as driving sources. If the positions of the rear tank 54 and the center tank are set so that the positions can be secured, it becomes possible to secure a constant center of gravity position regardless of the vehicle type.

  In this embodiment, the canister 68 and the sub-muffler 69-1 are installed in the center mounting space 57. However, as the mounting structure according to the present invention, at least the canister 68 is installed in the center mounting space 57. The sub-muffler 69-1 may not necessarily be installed in the center mounting space 57.

[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. 4 is a schematic configuration diagram (side view) of the vehicle 1-2 according to the second embodiment of the present invention. FIG. 5 is a plan view of the body frame and the floor panel as viewed from below. FIG. 6 is a schematic perspective view showing an arrangement configuration of a fuel tank and the like mounted on the vehicle. A vehicle 1-2 shown in these drawings is a hybrid vehicle provided with a three-phase motor (electric motor) 3 in addition to an engine 2 as a drive source housed in an engine room 5. In addition, the vehicle 1-2 includes accessory parts such as an IPU 60 and a high-voltage line 63 (see FIG. 6), which will be described later, for supplying electric power to the motor 3.

  An IPU (intelligent power unit: electric device for electric motor) 60 is housed on the rear floor 33 c on the rear side of the rear seat 16. 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. In addition, when the vehicle 1-2 is decelerated, when the engine output or the kinetic energy of the vehicle 1-2 is converted into electric energy and stored in the battery, the regenerative power generated by the motor 3 functioning as a generator is It converts from alternating current to direct current and stores it 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.

  In the vehicle 1-2 of the present embodiment, a center tank (second fuel tank) 58 for storing fuel supplied to the engine 2 is mounted in the center mounting space 57 provided below the front seat 13. Has been. That is, the vehicle 1-2 according to the present embodiment is mounted in the center mounting space 57 among the center tank 58 that can be mounted in the center mounting space 57 and the rear tank 54 that can be mounted in the rear mounting space 53 (see FIGS. 1 to 3). The center tank 58 is provided.

  Moreover, in the vehicle 1-2 of this embodiment, the fuel tank is not mounted in the rear mounting space 53. In the rear mounting space 53, 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 fuel supply pipe 61 to which the canister 68 is attached extends from the center tank 58 toward the rear side of the vehicle and is connected to the canister 68, and further extends from the canister 68 toward the front side of the vehicle. It is connected to. The canister 68 is mounted at a substantially central portion in the vehicle width direction of the rear mounting space 53, and the sub muffler 69-1 is disposed on a side portion (right side portion) of the rear mounting space 53 in the vehicle width direction. In addition, an under cover 55 that closes the opening is installed in the opening on the lower surface side of the rear mounting space 53. The under cover 55 is a plate material that covers the lower surface side of the rear mounting space 53, and as shown in FIG. 5, a middle cross member (first frame material) 42 provided on the front side of the rear mounting space 53, and the rear mounting space. 53 has a connecting frame member 55a for connecting a rear cross member (second frame member) 44 provided on the rear side of the connector 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 1-2, and corresponds to the U phase, V phase, and W phase of the motor. It is a phase wire. The high-voltage line 63 is pulled out from the terminal portion of the motor 3 and extends inside the floor tunnel 32 toward the rear of the vehicle 1-2, and outside the vehicle width direction on the front side of the center tank 58 (center mounting space 57). 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 1-2 according to 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 extends 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 1-2 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 center tank 58 mounted in the center mounting space 57 among the rear tank 54 and the center tank 58. The rear mounting space 53 includes a canister 68 installed in the fuel supply pipe 61, and A sub-muffler 69-1 installed in an exhaust pipe 66 through which the exhaust of the engine 2 flows is disposed.

  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 and a center tank 58 for a vehicle (hybrid vehicle) including both of the vehicle body 3 and the vehicle body 31 can be selectively mounted 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. Further, when the center tank 58 is mounted, the rear mounting space 53 becomes an empty space. By mounting the canister 68 and the sub muffler 69-1 in the rear mounting space 53 that is the empty space, the space for arranging the parts is provided. Can be used effectively.

  Further, in the vehicle 1-2 of the present embodiment, 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 the frame material 55a of the under cover 55. Can be connected to each other, so that it is possible to improve the resistance against 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. In contrast, in a vehicle (hybrid vehicle) in which both the engine 2 and the motor 3 are mounted as drive sources, such as the vehicle 1-2 of the present embodiment, a vehicle (engine vehicle) in which only the engine 2 is mounted as a drive source. ) Compared with 1-1, it is possible to set the capacity of the fuel tank to a smaller capacity by the amount of assistance of the driving force by the motor 3. That is, the vehicle 1-2 of the present embodiment, which is a hybrid vehicle, has better fuel efficiency than the engine vehicle, so the capacity of the fuel tank is also in an appropriate range.

  Also in the vehicle 1-2 of the present embodiment, the vehicle 1-2 in which the center tank 58 is mounted in the center mounting space 57 and the vehicle (vehicle in the first embodiment) 1 in which the rear tank 54 is mounted in the rear mounting space 53. 1, the arrangement positions of the center tank 58 and the rear tank 54 are set so that the center of gravity G (see FIG. 5) of the vehicle is substantially the same position. That is, also in the vehicle 1-2 of the present embodiment, the positions of the center tank 58 and the rear tank 54 are set so that the optimal center-of-gravity position can be secured in both the vehicle 1-2 and the vehicle 1 of the first embodiment. This makes it possible to secure a constant center of gravity regardless of the vehicle type.

  FIG. 7 is a diagram illustrating a modification of the vehicle according to the second embodiment. In the vehicle 1-2 shown in the figure, an IPU 60 including a battery for supplying electric power to the motor 3 is mounted not in the rear floor 33c 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 54 can be mounted instead of the rear tank 54. 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. 7, 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, in addition to this, only the canister 68 is installed in the rear mounting space 53, and the sub muffler 69-1. Can be installed in a place other than the rear mounting space 53.

  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 (Engine vehicle)
1-2 Vehicle (hybrid 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 (component 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 (5)

A vehicle component mounting structure,
An internal combustion engine as a drive source disposed in front of the passenger compartment, or an internal combustion engine and an 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 a size different from that of the first fuel tank is mounted in the second component mounting space can be selectively employed.
The vehicle includes only an internal combustion engine as the drive source,
Only the first fuel tank mounted in the first component mounting space among the first fuel tank and the second fuel tank is provided,
The vehicle component mounting structure, wherein at least a canister installed in a fuel pipe for supplying fuel from the first fuel tank to the internal combustion engine is mounted in the second component mounting space. An under cover installed in the opening on the lower surface side of the second component mounting space;
The under cover includes a first frame material constituting a part of the vehicle body frame provided on the front side of the second component mounting space, and a part of the vehicle body frame provided on the rear side of the second component mounting space. The vehicle component mounting structure according to claim 1, further comprising a connecting frame member that connects the second frame member to be configured. The fuel pipe extends linearly from the internal combustion engine toward the first fuel tank in the first component mounting space, and is disposed so as to cross at least the second component mounting space in the front-rear direction of the vehicle. The vehicle component mounting structure according to claim 1 or 2, characterized in that 4. The vehicle component mounting structure according to claim 1, wherein a capacity of the second fuel tank is set to be smaller than a capacity of the first fuel tank. 5. 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 4, wherein an arrangement position of the first fuel tank and the second fuel tank is set.

Images