JP2022080100A - Tank arrangement structure for vehicle - Google Patents

Abstract

To dissolve a reducing solution in a reducing solution tank at an earlier stage by effectively using exhaust heat of an internal combustion engine, and to efficiently restrain volatilization of fuel in a fuel tank caused by the exhaust heat.SOLUTION: A tank arrangement structure for a vehicle includes an exhaust pipe (1) for discharging exhaust gas of an internal combustion engine to the atmosphere, a propeller shaft (3) for transmitting driving force to a rear wheel, a fuel tank (5) for storing liquid fuel of the internal combustion engine, and a reducing solution tank (2) for storing a reducing solution used for purifying nitrogen oxide in the exhaust gas, in a lower part of the vehicle. In a plan view, the fuel tank (5) is disposed in a side opposite from the exhaust pipe (1) with respect to the propeller shaft (3). The reducing solution tank (2) is disposed in a side opposite from the propeller shaft (3) with respect to the exhaust pipe (1).SELECTED DRAWING: Figure 1

Description

The present invention relates to an arrangement structure of a tank mounted on a vehicle.

The following Patent Document 1 discloses a reducing liquid tank for storing a reducing liquid (diesel exhaust liquid: DEF / Diesel Exhaust Fluid) mounted on a vehicle (diesel vehicle). DEF is used by the SCR (Selective Catalytic Reduction) system to purify nitrogen oxides (NOx) contained in the exhaust. The DEF used in the vehicle is standardized and is 32.5% urea water. DEF is sprayed into the exhaust pipe to produce ammonia (NH ₃ ), and NOx reacts with NH ₃ by the SCR catalyst and is reduced to nitrogen (N ₂ ) and water vapor (H ₂ O).

The reducing liquid tank (DEF tank) disclosed in Patent Document 1 is provided below the rear trunk of the vehicle (under the floor), and a silencer provided on the exhaust pipe is arranged next to the reducing liquid tank (DEF tank). .. Patent Document 1 also discloses a fuel tank mounted on a vehicle, and the fuel tank is mounted below the rear seat of the vehicle (under the floor) so as to straddle the exhaust pipe (upstream portion of the silencer). Has been done.

Japanese Patent No. 4924352

Since the DEF freezes at -11 ° C, it may be in a frozen state at the time of cold start in a cold region or the like. Therefore, it is required to melt the frozen DEF earlier after the cold start of the internal combustion engine (diesel engine). On the other hand, liquid fuels for internal combustion engines (gasoline, light oil used in diesel vehicles, etc.) are highly volatile, so it is required to keep them away from high temperature exhaust pipes as much as possible. In this way, it is desired to solve the requirements for the arrangement of each tank in a well-balanced manner.

An object of the present invention is to effectively utilize the exhaust heat of the internal combustion engine to melt the reducing liquid in the reducing liquid tank at an earlier stage, and to effectively volatilize the fuel in the fuel tank by the exhaust heat. It is an object of the present invention to provide a vehicle tank arrangement structure that can be suppressed.

The vehicle tank arrangement structure according to the present invention includes an exhaust pipe for exhausting the exhaust of the internal combustion engine, a propeller shaft for transmitting a driving force to the rear wheels, a fuel tank for storing the liquid fuel of the internal combustion engine, and a fuel tank in the exhaust. A reducing liquid tank for storing the reducing liquid for purifying nitrogen oxides is provided at the bottom of the vehicle. The fuel tank is arranged on the side opposite to the exhaust pipe with respect to the propeller shaft in a plan view, and the reducing liquid tank is arranged on the side opposite to the propeller shaft with respect to the exhaust pipe.

According to the present invention, the reduced liquid in the reducing liquid tank can be effectively melted at an earlier stage by effectively utilizing the exhaust heat of the internal combustion engine, and the volatilization of the fuel in the fuel tank due to the exhaust heat is effective. Can be deterred.

FIG. 1 is a bottom view showing a vehicle tank arrangement structure according to an embodiment. FIG. 2 is a cross-sectional view taken along the line II-II in FIG. FIG. 3 is a cross-sectional view taken along the line III-III in FIG.

The vehicle tank arrangement structure according to the embodiment will be described with reference to FIGS. 1 to 3. The internal combustion engine mounted on the vehicle of the present embodiment is a diesel engine (not shown). Further, the reducing liquid of the present embodiment is the above-mentioned DEF, which is used in the SCR system mounted on the vehicle. The DEF is sprayed into the exhaust pipe 1 upstream of the SCR catalyst element 1b provided on the exhaust pipe 1 to generate NH ₃ , and this NH ₃ is used for the reduction of NOx by the SCR catalyst. Further, in the vehicle of the present embodiment, the rear space inside the vehicle can be widely used as a luggage compartment. Therefore, the floor surface of the luggage compartment is flattened, and the spare tire 8 is also attached under the floor.

The tank arrangement structure of the present embodiment includes an exhaust pipe 1 that discharges the exhaust gas of the internal combustion engine to the atmosphere. The exhaust gas is purified while passing through the exhaust pipe 1 so that the emission control substance in the exhaust gas becomes a specified value or less, and then is discharged to the atmosphere. The exhaust pipe 1 refers to a portion from the exhaust manifold to the end where the exhaust gas is discharged to the atmosphere. A part of the exhaust pipe 1 extends to the lower part of the vehicle (under the floor of the vehicle compartment or the luggage compartment / loading platform). Further, the tank arrangement structure also includes a resin reducing liquid tank 2 for storing DEF (reducing liquid) used for purifying NOx in exhaust gas. The reducing liquid tank 2 is also mounted on the lower part (under the floor) of the vehicle.

The vehicle of the present embodiment is a four-wheel drive vehicle, and a propeller shaft 3 for transmitting driving force to the rear wheels is extended to the front and rear at the center under the floor in the vehicle width direction. The exhaust pipe 1 extends back and forth on the left side of the propeller shaft 3 (upper side in the bottom view of FIG. 1). However, as shown in FIG. 1, the front portion of the exhaust pipe 1 passes under the front end of the propeller shaft 3 in the vicinity of the connection portion between the propeller shaft 3 and the transfer 4 and extends to the internal combustion engine (this portion). Is not shown in FIG. 2). Note that FIGS. 1 and 2 also show a silencer 1a (a part of the exhaust pipe 1) provided on the exhaust pipe 1.

The silencer 1a has a long shape in the front-rear direction of the vehicle. As will be described in detail later, the exhaust pipe 1 is arranged in the vicinity of the reducing liquid tank 2 in order to supply the heat of the exhaust to the (frozen) DEF in the reducing liquid tank 2, and the heat of the exhaust is muted. It is supplied to the DEF in the reducing liquid tank 2 via the vessel 1a. Further, the above-mentioned reducing liquid tank 2 is arranged on the side opposite to the exhaust pipe 1 (silencer 1a) with the propeller shaft 3 interposed therebetween. The reducing liquid tank 2 also has a long shape in the front-rear direction of the vehicle, and is arranged so that its longitudinal direction is substantially parallel to the exhaust pipe 1 (silencer 1a).

As described above, the exhaust pipe 1 and the reducing liquid tank 2 are mounted on the left side of the propeller shaft 3, but the metal fuel tank 5 for storing the liquid fuel of the internal combustion engine is mounted on the right side of the propeller shaft 3. Has been done. The fuel tank 5 is provided with a lower cover 50 for preventing chipping that substantially covers the lower portion thereof, and is provided with a protective cover 51 for protecting the fuel tank 5 and the rear portion (near the rear suspension) of the lower cover 50. The reducing liquid tank 2, the exhaust pipe 1, the propeller shaft 3, and the fuel tank 5 are mounted between the pair of side members 7 in a plan view (bottom surface) view.

As described above, in the vehicle of the present embodiment, the luggage compartment floor surface is flattened so that the internal rear space can be widely used as the luggage compartment, and the spare tire 8 is also attached under the floor. Therefore, it is difficult to arrange the reducing liquid tank 2 and the fuel tank 5 having a large volume under the floor at the rear of the vehicle. Further, an internal combustion engine and the above-mentioned transfer 4 are arranged in the front part of the vehicle. Therefore, in the present embodiment, the reducing liquid tank 2 and the fuel tank 5 are arranged under the floor in the center of the vehicle so as to be aligned with the exhaust pipe 1 and the propeller shaft 3.

As described above, in the bottom view shown in FIG. 1 (same in the plan view), the fuel tank 5 is mounted on the side opposite to the exhaust pipe 1 with respect to the propeller shaft 3, and the propeller is mounted with respect to the exhaust pipe 1. The reducing liquid tank 2 is mounted on the side opposite to the shaft 3. Therefore, as shown in FIG. 2, the reducing liquid tank 2, the exhaust pipe 1, the propeller shaft 3, and the fuel tank 5 are arranged in this order from one side in the vehicle width direction (the left side of the vehicle in this embodiment).

Further, the rear axle in this embodiment is a rigid axle. Further, as described above, since the vehicle of the present embodiment widely uses the internal rear space as a luggage compartment, a leaf spring type suspension that can secure a wide internal rear space is adopted. That is, the rear wheels are suspended by leaf spring suspensions, and the leaf spring suspensions are equipped with a pair of leaf springs 9. Each leaf spring 9 extends in the front-rear direction, and its front-rear end (spring eye) is attached to the lower surface of each side member 7.

More specifically, the front end 90 of the leaf spring 9 is attached to the bracket 70 of the side member 7, as shown in FIG. Further, the rear end of the leaf spring 9 is attached to the lower surface of the side member 7 via a shackle 92 (see FIG. 1). A lower bracket 91 is arranged at the center of the leaf spring 9, and a rear axle is attached to the lower bracket 91.

A shock absorber (not shown) is diagonally attached between the front portion of the lower bracket 91 on the left side (upper side in FIG. 1) and the side member 7. Similarly, a shock absorber (not shown) is obliquely attached between the rear portion of the lower bracket 91 on the right side (lower side of FIG. 1) and the side member 7. Note that FIG. 3 does not show the exhaust pipe 1 and the propeller shaft 3.

The bracket 70 to which the front end 90 of the leaf spring 9 is attached is composed of a bridge member fixed to the lower surface of the side member 7 and a pair of side plates sandwiching the bridge member from both sides and fixed to the side surface of the side member 7. It is configured. In this embodiment, the bridge member, the side plate, and the side member 7 of the bracket 70 are welded to each other. As shown in FIG. 1, a plurality of cross members extending in the vehicle width direction are provided between the pair of side members 7. The ends of the bridge member of the bracket 70 are attached to the positions of the cross members 10A and 10B, respectively.

In other words, at the position of the bracket 70, cross members 10A and 10B for connecting the pair of side members 7 in the vehicle width direction are provided. As shown in FIG. 2, both end portions 10Ae of one cross member 10A are welded to the side surface of the side member 7 and extended by an extension member so as to slip into the lower surface of the side member 7. One of the ends of the bridge member of the bracket 70 is fixed to the side member 7 via the end 10Ae, and the other is fixed to the side member 7 via the end 10Be of the similarly formed cross member 10B. There is.

In the tank arrangement structure of the present embodiment, the reducing liquid tank 2, the exhaust pipe 1, the propeller shaft 3 and the fuel tank 5 are arranged as described above. Since it is not desired to give heat to the liquid fuel in the fuel tank 5, in the present embodiment, the fuel tank 5 is arranged so as to be as far away from the exhaust pipe 1 as possible with the propeller shaft 3 interposed therebetween. By arranging the fuel tank 5 in this way, it is possible to prevent the fuel in the fuel tank 5 from volatilizing.

On the other hand, if the DEF in the reducing liquid tank 2 is frozen, it is desired to be thawed at an early stage, and if it is not frozen, it is desired to suppress the freezing. In the present embodiment, the DEF in the reducing liquid tank 2 is heated by the heat of the exhaust gas flowing through the exhaust pipe 1 arranged in the vicinity thereof. The reducing liquid tank 2 refers to a container portion for storing the DEF. The reducing liquid tank 2 integrates a pump 20 that sends out a DEF for injecting the DEF into the exhaust pipe 1. The upper part of the pump 20 is located inside the reducing liquid tank 2, but the lower part thereof protrudes downward from the reducing liquid tank 2. The portion of the pump 20 protruding downward from the reducing liquid tank 2 is not the reducing liquid tank 2. Further, a protective cover 21 for protecting the front portion of the pump 20 and the reducing liquid tank 2 is attached to the reducing liquid tank 2 so as to cover the lower surface of the front portion of the pump 20 and the reducing liquid tank 2. The protective cover 21 is also not the reducing liquid tank 2.

The silencer 1a, which is a part of the exhaust pipe 1, is extended in the longitudinal direction of the reducing liquid tank 2 in the vicinity of the reducing liquid tank 2. Therefore, the heat of the exhaust gas of the internal combustion engine is radiated from the surface of the silencer 1a to warm and melt the frozen DEF inside the reducing liquid tank 2. The inner diameter and outer diameter of the silencer 1a are larger than the inner diameters of the exhaust pipes 1 before and after the silencer 1a. Therefore, since the silencer 1a stores a large amount of exhaust gas in volume and has a large surface area, the heat of the exhaust gas can be effectively supplied to the DEF in the reducing liquid tank 2.

In this embodiment, an electric heater is also integrated in the pump 20, and the frozen DEF can be melted by electric energy. If the exhaust immediately after a cold start has not yet warmed up, an electric heater can be used to melt the frozen DEF. Since the power consumption by the electric heater causes deterioration of fuel efficiency, if the frozen DEF can be melted by using the heat of the exhaust as in the present embodiment, the power consumption can be suppressed and the deterioration of fuel consumption can be reduced.

Further, in the present embodiment, a metal (aluminum) heat diffusion plate 6 for diffusing heat is provided between the reducing liquid tank 2 and the exhaust pipe 1 (silencer 1a). The heat diffusion plate 6 has a length substantially equal to the length in the longitudinal direction of the reducing liquid tank 2. Therefore, the heat radiated from the silencer 1a is diffused by the heat diffusion plate 6 to efficiently heat the DEF in the reducing liquid tank 2. In the present embodiment, the heat diffusion plate 6 is fixed to the reducing liquid tank 2. Further, since the reducing liquid tank 2 is made of resin, it melts if the temperature is too high, so that the heat diffusion plate 6 diffuses heat so as not to be locally heated. Further, in order to prevent the reducing liquid tank 2 from overheating, a heat insulator 60 formed of a heat-resistant fiber member or the like is attached to the surface of the heat diffusing plate 6 on the reducing liquid tank 2 side.

The heat insulator 60 is not provided on all the surfaces of the heat diffusion plate 6 on the reducing liquid tank 2 side, but is attached only to a portion particularly close to the silencer 1a. Specifically, the heat insulator 60 is not attached to the upper part of the surface of the heat diffusion plate 6 on the reducing liquid tank 2 side. The heat insulator 60 also contributes to the above-mentioned heat diffusion, and also acts to make the temperature of the heat diffusion plate 6 uniform.

In this embodiment, as shown in FIG. 2, the exhaust pipe 1 (silencer 1a) is located slightly below the reducing liquid tank 2. Since the exhaust pipe 1 (silencer 1a) extends in the longitudinal direction of the vertically elongated reducing liquid tank 2 in the vicinity of the reducing liquid tank 2, the heat of the exhaust gas inside the exhaust pipe 1 is applied to the inside of the reducing liquid tank 2. It can be efficiently supplied to DEF. That is, it is possible to secure a long length (distance) for supplying heat from the exhaust pipe 1 to the DEF in the reducing liquid tank 2, and it is possible to supply heat in a wider range.

As described above, both the reducing liquid tank 2 and the exhaust pipe 1 are mounted on the lower part (under the floor) of the vehicle. Therefore, it is difficult to arrange the reducing liquid tank 2 and the exhaust pipe 1 (silencer 1a) vertically, and the reducing liquid tank 2 and the exhaust pipe 1 are arranged side by side. At this time, it is preferable that at least a part of the reducing liquid tank 2 and the (silencer 1a) overlap each other in the height direction when viewed from the side as in the present embodiment. With such an arrangement, the heat of the exhaust gas can be efficiently supplied to the DEF in the reducing liquid tank 2 while suppressing the installation height of the reducing liquid tank 2 and the exhaust pipe 1 (silencer 1a).

Since the surrounding air warmed by the heat of the exhaust pipe 1 (silencer 1a) flows upward (when the vehicle is not running), the reducing liquid tank 2 is relative to the exhaust pipe 1 (silencer 1a). Is located above, which is preferable for supplying heat to the DEF in the reducing liquid tank 2. That is, when viewed from the side, it is preferable that at least the lower portion of the reducing liquid tank 2 and the upper portion of the exhaust pipe 1 (silencer 1a) overlap. However, the exhaust pipe 1 (silencer 1a) may be contained within the height range of the reducing liquid tank 2.

Further, since the exhaust pipe 1 (silencer 1a) and the heat diffusion plate 6 store heat for a while even after the internal combustion engine of the vehicle is stopped, the DEF in the reducing liquid tank 2 is kept warm and difficult to freeze. As a result, according to the tank arrangement structure of the present embodiment, in addition to being able to melt the frozen DEF earlier at the time of cold start, it is also possible to make it difficult to freeze the DEF after the internal combustion engine is stopped.

Further, in the present embodiment, the SCR catalyst element 1b and the ASC (Ammonia Slip Catalyst) catalyst element (not shown) are housed inside the silencer 1a. The SCR catalyst element 1b is a honeycomb substrate made of ceramic or the like on which an SCR catalyst is supported. The ASC catalyst element is a honeycomb substrate made of ceramic or the like on which an oxidation catalyst is supported, and the surplus NH ₃ that has passed (slipped) through the SCR catalyst element 1b is oxidized to N ₂ and H ₂ O. Disassemble into. The SCR catalyst element 1b and the ASC catalyst element are elements on which an exhaust gas purification catalyst is supported. That is, in the present embodiment, the silencer 1a also functions as an exhaust gas purification catalyst converter. Since the reaction heat is generated by the above-mentioned exhaust gas purification reaction inside the silencer 1a, this reaction heat also contributes to the supply of heat to the DEF. In addition, since these elements can also store heat, they also contribute to making it difficult for the DEF to freeze after the internal combustion engine is stopped.

Further, in the tank arrangement structure of the present embodiment, as described above, the reducing liquid tank 2, the exhaust pipe 1, the propeller shaft 3 and the fuel tank 5 are arranged between the pair of side members 7. Here, at the position of the bracket 70 to which the front end 90 of the leaf spring 9 is attached, the exhaust pipe 1, the propeller shaft 3, the fuel tank 5, and the reducing liquid tank 2 all overlap in the side view. Therefore, the exhaust pipe 1, the propeller shaft 3, the fuel tank 5, and the reducing liquid tank 2 can be arranged at the lower part (under the floor) of the vehicle while suppressing the installation height without vertically overlapping the exhaust pipe 1, the propeller shaft 3, and the reducing liquid tank 2. Here, the bracket 70 is arranged on the outer side of the fuel tank 5 and the reducing liquid tank 2. Therefore, the fuel tank 5 and the reducing liquid tank 2 are protected by the bracket 70 and the side member 7 to which the bracket 70 is attached in the event of a side collision with the vehicle. As a result, leakage of the liquid stored in the fuel tank 5 and the reducing liquid tank 2 is prevented.

In particular, in the present embodiment, cross members 10A and 10B for connecting the pair of side members 7 in the vehicle width direction are provided at the positions of the pair of brackets 70. Therefore, the lateral impact load is also received by the cross members 10A and 10B, and the fuel tank 5 and the reducing liquid tank 2 are more firmly protected.

In the tank arrangement structure according to the present embodiment, the fuel tank 5 is mounted on the lower part of the vehicle on the side opposite to the exhaust pipe 1 with respect to the propeller shaft 3 in a plan view (bottom view). Further, the reducing liquid tank 2 is mounted on the lower part of the vehicle on the side opposite to the propeller shaft 3 with respect to the exhaust pipe 1 in a plan view (bottom view). Since the reducing liquid tank 2 is arranged adjacent to the exhaust pipe 1, the reducing liquid (DEF) is melted earlier and frozen by the heat of the exhaust through the exhaust pipe 1 if it is in a frozen state. Even if it is not present, freezing is prevented by the heat stored in the exhaust pipe 1.

On the other hand, the fuel tank 5 is arranged so as to be as far away from the exhaust pipe 1 as possible with the propeller shaft 3 interposed therebetween. By arranging the fuel tank 5 in this way, it is possible to prevent the fuel in the fuel tank 5 from volatilizing. Further, if the reducing liquid tank 2 and the fuel tank 5 for storing the liquid are full, the weight becomes large. By arranging such tanks on the left and right sides of the lower part of the vehicle in a well-balanced manner, the position of the center of gravity of the vehicle is lowered and the weight distribution of the vehicle is optimized. As a result, the vehicle motion performance is improved.

Further, in the tank arrangement structure according to the present embodiment, the lower part of the reducing liquid tank 2 and the upper part of the exhaust pipe 1 overlap at least. With such an arrangement, the heat of the exhaust gas can be efficiently supplied to the reducing liquid in the reducing liquid tank 2 while suppressing the installation height of the reducing liquid tank 2 and the exhaust pipe 1 (silencer 1a). As a result, the heat of the exhaust gas can be efficiently supplied to the reducing liquid in the reducing liquid tank 2.

Further, in the tank arrangement structure according to the present embodiment, the front end 90 of the leaf spring 9 of the rear wheel suspension is attached to the lower surface of the side member 7 via the bracket 70. Then, at the position of the bracket 70 in the front-rear direction, the exhaust pipe 1, the propeller shaft 3, the fuel tank 5, and the reducing liquid tank 2 all overlap in the side view. Therefore, the exhaust pipe 1, the propeller shaft 3, the fuel tank 5, and the reducing liquid tank 2 can be arranged at the lower part (under the floor) of the vehicle while suppressing the installation height. Further, in the event of a side collision with the vehicle, the fuel tank 5 and the reducing liquid tank 2 are protected by the bracket 70 and the side member 7 to which the bracket 70 is attached, and the liquid stored in the fuel tank 5 and the reducing liquid tank 2 is protected. Leakage is prevented.

Here, in the tank arrangement structure according to the present embodiment, a cross member 10A (10B) for connecting a pair of side members 7 in the vehicle width direction is provided at the position of the bracket 70. Therefore, the lateral impact load is also received by the cross member 10A (10B), and the fuel tank 5 and the reducing liquid tank 2 are more firmly protected.

The present invention is not limited to the above embodiment. For example, in the above embodiment, in the plan view (bottom view), the reducing liquid tank 2, the exhaust pipe 1, the propeller shaft 3, and the fuel tank are arranged in this order from the left side of the vehicle. However, from the right side of the vehicle, the reducing liquid tank, the exhaust pipe, the propeller shaft, and the fuel tank may be arranged in this order. Further, in the above embodiment, two cross members 10A and 10B are arranged at the position of the bracket 70, but only one cross member may be arranged.

Further, the vehicle of the above embodiment is a four-wheel drive vehicle, and the propeller shaft 3 extends from the transfer to the rear axle. However, the propeller shaft may be a propeller shaft of a rear-wheel drive vehicle in which an internal combustion engine and a transmission are mounted in front of the vehicle. Further, in a vehicle in which the internal combustion engine is mounted in the front of the vehicle and the transmission (transaxle) is mounted in the rear of the vehicle, a propeller shaft connecting the internal combustion engine and the transmission may be used. Further, the vehicle body of the vehicle of the above embodiment has a monocoque body structure, and the side member thereof is a part of the monocoque body, but a side member having a frame structure used for a truck or the like may be used.

1 Exhaust pipe 2 Reduction liquid tank 3 Propeller shaft 5 Fuel tank 7 Side member 70 (side member 7) bracket 9 Leaf spring 90 (leaf spring 9) front end 10A, 10B Cross member

Claims (4)

In the vehicle tank arrangement structure
An exhaust pipe extending in the front-rear direction at the bottom of the vehicle to exhaust the exhaust of the internal combustion engine to the atmosphere,
A propeller shaft extending in the front-rear direction at the center of the lower part of the vehicle in the vehicle width direction and transmitting a driving force to the rear wheels.
In a plan view, a fuel tank mounted on the lower part of the vehicle on the side opposite to the exhaust pipe with respect to the propeller shaft and storing liquid fuel of the internal combustion engine of the vehicle.
In a plan view, the exhaust pipe is provided with a reducing liquid tank mounted on the lower part of the vehicle on the side opposite to the propeller shaft to store the reducing liquid used for purifying nitrogen oxides in the exhaust. There is a tank arrangement structure for vehicles. The vehicle tank arrangement structure according to claim 1.
A vehicle tank arrangement structure in which the lower portion of the reducing liquid tank and the upper portion of the exhaust pipe overlap at least in a side view. The vehicle tank arrangement structure according to claim 1 or 2.
The rear wheels are suspended by leaf spring suspension.
The leaf spring suspension comprises a pair of leaf springs attached to each of the pair of side members extending in the anteroposterior direction.
The front end of the leaf spring is attached to the lower surface of the side member via a bracket, respectively.
A vehicle tank arrangement structure in which the exhaust pipe, the propeller shaft, the fuel tank, and the reducing liquid tank all overlap in a side view at the position of the bracket in the front-rear direction. The vehicle tank arrangement structure according to claim 3.
A vehicle tank arrangement structure in which a cross member connecting the pair of side members in the vehicle width direction is provided at the position of the bracket.

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