JP2003246224A - Fuel tank structure for truck - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To allow fuel vapor in supplying fuel to be sent to a canister by increasing the positional energy of supply fuel when a difference between a fuel supply port and a liquid level of the fuel in a tank is larger, to thereby raise the energizing ability of residual air in the tank, and to supply the fuel even when ventilating resistance is increased by connecting an air tube, that is an evaporating fuel passage, to the canister. <P>SOLUTION: The fuel vapor in supplying the fuel is directly exhausted to the atmosphere through a breather in a truck. A fuel tank structure for the truck comprises the fuel tank 13 disposed under a floor 15 of a luggage carrier, a hole 19 opened at a floor 1, a fuel supply tube 14 extended upward via the hole 19, and the fuel supply port 14a having a fuel supply cap disposed preferably on a saddle plate 16. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to improvement of a fuel tank structure for a lorry.

[0002]

2. Description of the Related Art FIG. 8 is a side view of a conventional freight vehicle. In a freight vehicle 100 represented by a light truck, seats including a driver's seat and a passenger seat are arranged side by side in a passenger compartment 101 at the front of the vehicle. Substantially all of the following are used as the loading platform 102, and the fuel tank 103 is arranged below the front portion of the loading platform 102.

FIG. 9 is a sectional view taken along line 9-9 of FIG. 8, and the platform 102 is composed of a sufficiently rigid floor 104 and a swing plate 106 attached to the edge of the floor 104 via a hinge 105. Below the loading platform 102 like the frame 107, 1
It is shown that the fuel tank 103 is supported by arranging 07 and fastening them to these frames 107, 107 with bolts 108, 108.

The fuel tank 103 is provided with an oil supply pipe 111 called a filler tube, and an oil supply port 112 at the upper end of the oil supply pipe 111 is closed by an oil supply cap 113. When the oil is supplied, the oil supply cap 113 is removed to the oil supply port 112. Insert a refueling gun (not shown) to refuel. The air in the tank leaks directly from the breather 121 to the atmosphere. 122
Is a canister, 123 is a two-way valve, and 124 is a float valve.

[0005]

In the fuel tank 103, the air 116 above the fuel 115 contains fuel vapor. Therefore, at the time of refueling, not only air but also fuel vapor is discharged to the atmosphere through the breather 121, and there is room for improvement from the viewpoint of environmental protection. Specifically, the breather is abolished and the air is supplied to the canister 12 through the ventilation pipe 114.
It is desirable to send it to No. 2 so that the fuel vapor at the time of refueling is not emitted to the atmosphere. However, the canister 122 is filled with an adsorbent such as activated carbon, and this adsorbent acts as a resistance against the flow, which makes it difficult to refuel the fuel.
2 cannot be collected.

Therefore, an object of the present invention is to provide a fuel tank structure capable of recovering fuel vapor at the time of refueling in a canister in a freight vehicle.

[0007]

In order to achieve the above object, the first aspect of the present invention is that the seats including the driver's seat and the passenger's seat are arranged side by side in the passenger compartment at the front of the vehicle, and almost all of the seats thereafter are used as the bed. In a freight vehicle in which a fuel tank is arranged below the front part of the luggage carrier, an oil supply pipe of the fuel tank is set up by penetrating the floor of the luggage carrier, and a fuel filler port is arranged above the floor of the luggage carrier.

By arranging the fuel filler port above the floor of the cargo bed, the fuel filler pipe of the fuel tank can be extended and the height can be increased. The larger the drop from the fuel filler to the liquid level of the fuel in the tank, the greater the potential energy of the fuel to be fueled, and the higher the ability to push out the residual air in the tank. Therefore, it is possible to connect the air pipe, that is, the evaporated fuel passage to the canister to supply fuel even if the ventilation resistance increases. In addition, since the refueling drop rate is increased, the refueling time can be shortened and the generation of fuel vapor can be suppressed.

The construction for that is to make a hole in the floor of the loading platform,
The design of an existing vehicle can be easily changed because it is only necessary to penetrate the oil supply pipe through this hole.

According to a second aspect of the present invention, seats including a driver's seat and a passenger's seat are arranged side by side in the passenger compartment at the front of the vehicle, and almost all of the seats thereafter are used as a cargo bed, and a fuel tank is arranged below the front part of the cargo truck. In the above, the fuel supply pipe of the fuel tank is started up through a notch provided in the floor of the cargo bed, and the fueling port is arranged above the floor of the cargo bed.

Similarly to the first aspect, the fuel vapor at the time of refueling can be collected in the canister, the refueling time can be shortened, and the generation of fuel vapor can be suppressed.
The structure for that purpose is to provide a notch in the floor of the luggage carrier and to pass the oil supply pipe through this notch, so that the design of the existing vehicle can be easily changed.

According to a third aspect of the present invention, seats including a driver's seat and a passenger's seat are arranged side by side in the passenger compartment at the front of the vehicle, and almost all of the seats thereafter are used as a cargo bed, and a fuel tank is arranged below the front part of the cargo bed. In the above, the fuel tank refueling port is arranged above the floor of the cargo bed and in front of the cargo bed.

Similarly to the first aspect, the fuel vapor at the time of refueling can be collected in the canister, the refueling time can be shortened, and the generation of fuel vapor can be suppressed.
Further, since the fuel filler port of the fuel tank is arranged in front of the luggage carrier, the fuel filler port can be provided without affecting the load carrying capacity of the luggage.

A fourth aspect of the present invention is characterized in that the fuel supply pipe of the fuel tank is erected through the rear structure of the passenger compartment.

Since the fuel supply pipe of the fuel tank penetrates through the rear structure of the passenger compartment, the fuel supply pipe is not exposed and the appearance is improved.

A fifth aspect of the present invention is characterized in that the fuel supply pipe of the fuel tank is started up through a notch provided in a rear structure of the passenger compartment.

Since the oil supply pipe of the fuel tank is passed through the notch provided in the rear structure of the passenger compartment, the oil supply pipe is not exposed and looks good.

According to a sixth aspect of the present invention, the fuel filler port is arranged on the passenger seat side. Since the fuel filler port is arranged on the passenger seat side, the entrance / exit opening on the driver's seat side does not become narrow, and the driver's entry / exitability can be kept good. .

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the accompanying drawings. The preferred embodiment according to claim 1 is shown in FIGS. 1 and 2, and the preferred embodiment according to claim 2 is shown in FIGS.
The preferred embodiment according to claim 3 will be described with reference to FIGS. 5 to 7, the preferred embodiment according to claim 4 will be described with reference to FIGS. 5 and 6, claim 5 will be described with reference to FIG. 7, and claim 6 will be described with reference to FIGS.

FIG. 1 (a) is a side view (No. 1) of a freight vehicle according to the present invention, and FIGS.
In (a), a lorry 1 represented by a light truck
0 is a passenger compartment 11 with seats including the driver's seat and front passenger seat in the front of the vehicle
Lined up in the left and right inside, and almost the whole thereafter is used as a loading platform 12, a fuel tank 13 is arranged below the front part of this loading platform 12, and an oil supply pipe 14 of this fuel tank 13 is passed through a floor 15 of the loading platform 12 to start up. It is characterized by that. (B) is a swing plate 1
6 shows an example in which an opening 16a is opened in 6 and an oil supply port 14a (hereinafter simply referred to as the oil supply port 14a) having an oil supply cap attached thereto is made to face the opening 16a. The notch 16b is provided, and the filler port 1 is provided in the notch 16b.
An example of facing 4a is shown.

FIG. 2 is a sectional view taken along line 2-2 of FIG. 1, in which the fuel filling port 14a is positioned above the floor 15 of the cargo bed 12, preferably above the swing plate 16. It shows that the oil supply pipe 14 of the tank 13 is sufficiently extended obliquely upward. Then, the lower end of the cover 17 is fixed to the floor 15, and the cover 17 surrounds most of the oil supply pipe 14. further,
The upper part of the oil supply pipe 14 is fixed to the upper part of the cover 17 so as to suppress the lateral shake of the oil supply pipe 14, and the floor 15
It is desirable to close the hole 19 opened at the bottom with a rubber packing 21.

The fuel vaporization fuel passage 22 extends from the upper portion of the fuel tank 13, and the fuel fuel vaporization passage 22 is extended.
The on-off valve 23 and the canister 24 are interposed between the two. When the pressure on the fuel tank 13 side becomes higher than a certain level during refueling, the on-off valve 23 escapes to the canister 24 side to allow air in the tank to flow, and closes the fuel vapor passage 22 during refueling while the refueling port 14a is closed after refueling. . The canister 24 contains an adsorbent such as activated carbon and separates and adsorbs fuel from fuel vapor. Therefore, there is no risk that the fuel vapor will be released to the atmosphere.

Reference numeral 25 is a ventilation pipe, and this ventilation pipe 2
Reference numeral 5 corresponds to the ventilation pipe 114 in FIG. 9 and has a diameter much smaller than that of the fuel vapor passage 22 during refueling. 22a and 25a are float valves, and 23a is a communication pipe that connects the diaphragm chamber of the opening / closing valve 23 and the fuel supply port 14a.

By the way, a certain pressure (differential pressure) is required to open the on-off valve 23. The fuel vapor passage 22 during refueling and the canister 24 also have a flow passage resistance, and it is necessary to generate a high pressure, which is the sum of the flow passage resistance and the pressure required to open the on-off valve 23, on the fuel tank 13 side.

In the present invention, the refueling pipe 14 is extended sufficiently upward so that the refueling port 14 extends from the liquid level of the fuel 26 in the fuel tank 13.
The height H up to a was made sufficiently large. This H is 3
The height is 0.00 to 400 mm, and the height of the related art (see reference numeral 111 in FIG. 9) is about 50 mm, which is significantly larger than the conventional height.

As the height H from the fuel inlet 14a to the liquid level of the fuel 26 in the tank, that is, the larger the head, the greater the potential energy of the fuel to be fueled and the ability to push out the residual air in the tank is enhanced, and the evaporated fuel passage 22 is Canister 24
It was possible to refuel even if the ventilation resistance increased by connecting to. In addition, since the refueling drop rate increases,
The refueling time can be shortened and the generation of fuel vapor can be suppressed.

Further, since it suffices to make a hole 19 in the floor 15 of the cargo bed 12 and pass the oil supply pipe 14 through the hole 19, there is also an advantage that the design of an existing vehicle can be easily changed.

FIG. 3 is a side view (2) of the freight vehicle according to the present invention. In the freight vehicle 10, the seats including the driver's seat and the passenger's seat are arranged side by side in the passenger compartment 11 at the front of the vehicle, and then Almost all are used as a loading platform 12, a fuel tank 13 is arranged below the front of the loading platform 12, and an oil supply pipe 14 of the fuel tank 13 is started up through a notch provided in the floor of the loading platform 12,
The filler port 14a is connected to the floor 15 of the loading platform 12 (preferably the loading platform 12
It is characterized in that it is arranged above the swing plate 16).

FIG. 4A is a sectional view taken along line 4-4 of FIG.
(B)-(f) is a principal part change drawing. In (a), the plan view structure of the connecting portion between the passenger compartment and the luggage carrier will be described.
The back plate 27 has a double structure of an outer panel 28 and an inner panel 29, and an end portion of the back plate 27 is continuous with a B pillar 31 (the B pillar is the second column from the front). At the front of the door 32
Then, the rear portion of the B pillar 31 is supported by the front portion of the plate 16. A fuel tank 13 is arranged below the front part of the cargo bed 12 which occupies almost the entire space behind the passenger compartment 11 as described above.
A notch 33 is formed on the front edge of the floor 15 of the luggage carrier 12, the oil supply pipe 14 is passed through the notch 33, and the oil supply pipe 14 is surrounded by a cover 34.

This structure has a cutout 3 in the floor 15 of the loading platform 12.
3 is provided, and since it suffices to pass the oil supply pipe 14 through the notch 33, there is an advantage that the design of an existing vehicle can be easily changed.

(B) to (f) are views of another embodiment of (a). In (b), the back plate 27 and the bed side plate 3 of the passenger compartment are shown.
Nos. 27 and 30a each having a semicircular shape are provided at 0, and the oil supply pipe 14 is passed therethrough. In (c), the back plate 27 is provided with a U-shaped notch 27b, and the oil supply pipe 14 is provided there.
I tried to pass it through. In (d), a notch 3 is formed in the corner of the loading platform 12.
0b is provided, and the oil supply pipe 14 is passed therethrough.
In (e), notches 27c and 30c are formed on the B pillar and the loading platform.
Was provided, and the oil supply pipe 14 was passed therethrough. In (f), the B pillar is provided with a notch 27d, and the oil supply pipe 14 is passed therethrough. As described above, the form of the notch provided on the floor of the cargo bed (a part of the passenger room including the cargo bed) can be arbitrarily determined.

FIG. 5 is a side view (No. 3) of the freight vehicle according to the present invention. In the freight vehicle 10, the seats including the driver's seat and the passenger's seat are arranged side by side in the passenger compartment 11 at the front of the vehicle, and after that, Almost all of the cargo bed 12 is used, a fuel tank 13 is arranged below the front of the cargo bed 12, an oil supply pipe 14 of the fuel tank 13 is pierced through a rear structure 35 of the passenger compartment 11, and an oil supply port 14a is formed. It is characterized in that it is arranged above the floor 15 of the luggage carrier 12 (preferably the swing plate 16 of the luggage carrier 12). The rear structure 35 of the passenger compartment 11 is a back plate (reference numeral 27 in FIG. 6) in this example, but any structure that constitutes the rear portion of the passenger compartment 11 may be a reinforcing portion, and any type thereof is acceptable.

FIG. 6 is a sectional view taken along line 6-6 of FIG. 5, and a plan view structure of a connecting portion between the passenger compartment and the luggage carrier will be described.
The back plate 27 has a double structure of an outer panel 28 and an inner panel 29, and an end portion of the back plate 27 is continuous with a B pillar 31 as a support.
The door 32 is received at the front part of the B pillar 31, and the front part of the plate 16 is supported at the rear part of the B pillar 31. A fuel tank 13 is provided below the front part of the loading platform 12 which occupies almost the entire area behind the cabin 11.
And a hole 37 is made in the bottom plate 36 that is passed under the back plate 27, and the oil supply pipe 14 is passed through the hole 37. The oil supply pipe 14 is guided to the B pillar 31 and the oil supply port 1
4a is housed in the B pillar 31, and the lid 38 provided on the outer surface of the B pillar 31 is opened to provide a structure for refueling.

In this structure, the oil supply pipe 1 of the fuel tank 13 is
4 penetrates the rear structure 35 of the passenger compartment 11, so that the oil supply pipe 14 is not exposed on the cargo bed 12 side and the appearance is improved.

FIG. 7 is a diagram showing an improved embodiment of FIG.
1, the fuel tank 13 is arranged below the front part of the carrier 12, and the fuel supply pipe 14 of the fuel tank 13 is erected through the notch 39 opened in the outer panel 28 of the rear structure 35. It is characterized in that the refueling port 14a is located above the floor 15 (preferably the swing plate 16) of the loading platform 12 in the raised position.

In this example, the rear structure 35 is only the end 41 of the back plate 27. That is, the B pillar 31 of the outer panel 28 that constitutes the back plate 27.
A notch 39 is provided in the vicinity, and at the same time, the vicinity of the B pillar 31 of the inner panel 29 that constitutes the back plate 27 is located in the passenger seat 1.
1 is slightly bulged to form a storage space 42 for the oil supply pipe 14 at the end 41 of the back plate 27, the oil supply pipe 14 guided through the notch 39 is passed through the storage space 42, and the oil supply pipe 14 To the B-pillar 31, the refueling port 14a is housed in the B-pillar 31, and the lid 38 provided on the outer surface of the B-pillar 31 is opened to provide a structure for refueling. As is clear from the figure, the storage space 42 can also be formed integrally with the B pillar 31.

The fuel supply pipe 14 of the fuel tank 13 is connected to the cabin 11
Since the notch 39 provided in the rear structure 35 is passed through, the oil supply pipe 14 is not exposed on the cargo bed 12 side, and the appearance is good. In addition, it is sufficient to reduce the thickness W of the back plate 27 and secure the storage space 42 for the oil supply pipe 14 only in the B pillar 31 or only in the vicinity of the B pillar 31, and thus a sufficient cabin space can be secured. Therefore, it is particularly useful for a light truck in which the thickness W of the back plate 27 is limited.

It should be noted that the shape, size, and position of the hole or notch through which the oil supply pipe passes can be changed from the above-described embodiment, and the embodiments can be combined or combined.

Further, although the present invention is suitable for a small vehicle called a light truck, it can be applied to a medium / large truck.

[0040]

The present invention has the following effects due to the above configuration. According to a first aspect of the present invention, the fuel supply pipe of the fuel tank is erected by penetrating through the floor of the cargo bed, and the fuel filler port is disposed above the floor of the cargo carrier. The fuel filler port is disposed above the floor of the cargo carrier. This makes it possible to extend the fuel supply pipe of the fuel tank and gain height. The larger the difference between the fuel filling port and the liquid level of the fuel in the tank, the greater the potential energy for fueling, and the higher the capability of pushing out the residual air in the tank. Therefore, the air pipe, that is, the fuel vapor at the time of refueling can be collected in the canister. In addition, since the refueling drop rate is increased, the refueling time can be shortened and the generation of fuel vapor can be suppressed.

The structure for that purpose is to make a hole in the floor of the loading platform,
The design of an existing vehicle can be easily changed because it is only necessary to penetrate the oil supply pipe through this hole.

A second aspect of the present invention is characterized in that the oil supply pipe of the fuel tank is erected through a notch provided in the floor of the cargo bed, and the fuel inlet is arranged above the floor of the cargo bed. The fuel vapor at the time of refueling can be collected in the canister, the refueling time can be shortened, and the generation of fuel vapor can be suppressed. The structure for that purpose is to provide a notch in the floor of the luggage carrier and to pass the oil supply pipe through this notch, so that the design of the existing vehicle can be easily changed.

According to a third aspect of the present invention, the fueling port of the fuel tank is arranged above the floor of the loading platform and in front of the loading platform. Like the first aspect, the fuel vapor at the time of refueling is collected in the canister. In addition, the refueling time can be shortened and the generation of fuel vapor can be suppressed. And
Since the fuel tank's refueling port is located in front of the loading platform,
The refueling port can be provided without affecting the luggage loading capacity.

According to a fourth aspect of the present invention, the fuel supply pipe of the fuel tank is erected through the rear structure of the passenger compartment and the fuel supply port is disposed above the floor of the cargo bed. Since the rear structure of the passenger room is penetrated, the oil supply pipe is not exposed and looks good.

According to a fifth aspect of the present invention, the fuel supply pipe of the fuel tank is started up through a notch provided in the rear structure of the passenger compartment, and the fuel supply port is arranged above the floor of the cargo bed. Through the notch provided in the rear structure of the passenger compartment, the oil supply pipe is not exposed and looks good.

According to the present invention, the fuel filler port is disposed on the passenger seat side. Since the fuel filler port is disposed on the passenger seat side, the driver's side entrance / exit does not become narrow, and the driver's entry / exitability is improved. Can be kept good. .

[Brief description of drawings]

1 is a side view of a lorry according to the present invention (No. 1)

FIG. 2 is a sectional view taken along line 2-2 of FIG.

FIG. 3 is a side view of a lorry according to the present invention (part 2).

FIG. 4 is a sectional view taken along line 4-4 of FIG.

FIG. 5 is a side view (3) of the lorry according to the present invention.

6 is a sectional view taken along line 6-6 of FIG.

FIG. 7 is an improved embodiment diagram of FIG.

FIG. 8 is a side view of a conventional freight vehicle.

9 is a sectional view taken along line 9-9 of FIG.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 ... Lorry vehicle, 11 ... Guest room, 12 ... Luggage, 13 ... Fuel tank, 14 ... Refueling pipe, 14a ... Refueling port (fuel refueling port provided with a refueling cap), 15 ... Luggage floor, 16 ... Floor board, 19 ... Holes in the floor, 22 ... Fuel vapor passage during refueling,
23 ... On-off valve, 24 ... Canister, 33, 39 ... Notch, 35 ... Rear structure.

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Ryutaro Shinohara             1-4-1 Chuo Stock Market, Wako City, Saitama Prefecture             Inside Honda Research Laboratory (72) Inventor Yasuhiro Hasegawa             1-4-1 Chuo Stock Market, Wako City, Saitama Prefecture             Inside Honda Research Laboratory (72) Inventor Shozo Sozono             1-4-1 Chuo Stock Market, Wako City, Saitama Prefecture             Inside Honda Research Laboratory F-term (reference) 3D038 CA15 CB03 CC13 CD02

Claims (6)

[Claims] 1. A freight vehicle in which seats including a driver's seat and a passenger's seat are arranged side by side in the passenger compartment at the front of the vehicle, and almost all of the subsequent seats are used as a cargo bed, and a fuel tank is arranged below the front part of the cargo bed. A fuel tank structure for a freight vehicle, characterized in that an oil supply pipe of the fuel tank is erected so as to penetrate through the floor of the cargo bed, and a fueling port is arranged above the floor of the cargo bed. 2. A freight vehicle in which seats including a driver's seat and a passenger seat are arranged side by side in the passenger compartment in the front of the vehicle, and almost all of the seats thereafter are used as a cargo bed, and a fuel tank is arranged below the front part of the cargo bed. A fuel tank structure for a lorry, characterized in that an oil supply pipe of the fuel tank is started up through a notch provided on the floor of the cargo bed, and a fueling port is arranged above the floor of the cargo bed. 3. A freight vehicle in which seats including a driver's seat and a passenger's seat are arranged side by side in the passenger compartment at the front of the vehicle, and almost all of the subsequent seats are used as a cargo bed, and a fuel tank is arranged below the front part of the cargo bed. A fuel tank structure for a freight vehicle, wherein a fuel filler port of the fuel tank is arranged above a floor of the cargo bed and in front of the cargo bed. 4. The fuel tank structure for a lorry according to claim 3, wherein an oil supply pipe of the fuel tank is erected through a rear structure of the passenger compartment. 5. The fuel tank structure for a lorry according to claim 3, wherein the fuel supply pipe of the fuel tank is erected through a notch provided in a rear structure of the passenger compartment. 6. The fuel tank structure for a lorry according to claim 4 or 5, wherein the fuel filler port is arranged on a passenger seat side.