CN220410891U

CN220410891U - Anti-negative overload oil supply device

Info

Publication number: CN220410891U
Application number: CN202321676091.1U
Authority: CN
Inventors: 王辉; 卢杰; 李涛; 任志文; 阙胜才; 田瑞娟; 周昌申; 张艳; 胡仁强
Original assignee: Jiangxi Hongdu Aviation Industry Group Co Ltd
Current assignee: Jiangxi Hongdu Aviation Industry Group Co Ltd
Priority date: 2023-06-29
Filing date: 2023-06-29
Publication date: 2024-01-30
Anticipated expiration: 2033-06-29

Abstract

The utility model discloses an anti-negative overload oil supply device which comprises an oil tank, a liquid level sensor, an electromagnetic valve, a double-end pipeline pump, an exhaust pipe, a bottom oil inlet pipe, a top oil inlet pipe, an oil filling nozzle, an exhaust nozzle, a bottom oil inlet nozzle, a top oil inlet nozzle, an oil filling pipe, an oil tank inner exhaust pipe, a bottom oil outlet pipe, a top oil outlet pipe, an oil delivery nozzle, a first support and a second support, wherein the oil delivery nozzle and the liquid level sensor are both arranged at the top of the oil tank, the oil filling nozzle is connected with the oil filling pipe, the electromagnetic valve is arranged on the first support, one end of the electromagnetic valve is connected with the oil tank inner exhaust pipe through the exhaust pipe and the exhaust nozzle, the other end of the electromagnetic valve is communicated with the atmosphere, the double-end pipeline pump is arranged on the second support, one end of the electromagnetic valve is connected with the bottom oil outlet pipe through the bottom oil inlet pipe and the bottom oil inlet nozzle, and the other end of the electromagnetic valve is connected with the top oil outlet pipe through the top oil inlet pipe and the top oil inlet nozzle; the utility model has the advantages that: the oil supply device has stronger negative overload resistance and can meet the requirement of multiple and long-time negative overload resistance.

Description

Anti-negative overload oil supply device

Technical Field

The utility model belongs to the field of aircraft fuel systems, and particularly relates to a negative overload resistant oil supply device.

Background

The main function of the fuel system of the aircraft is to meet the continuous fuel supply requirement of the engine, and the aircraft can have certain negative overload in the maneuvering flight process of rapid diving, back flying and the like and shake to a large extent, so that the fuel suction port at the bottom of the fuel tank is separated from the liquid level, and the continuous fuel supply is influenced. Therefore, aircraft fuel systems are designed with anti-negative overload fueling devices that provide continuous fueling during negative overload.

Common overload-resistant oil supply methods include overload small boxes, rotary oil extractors, elastic bags and the like. The overload small box is provided with only 1 oil suction port, has fixed positions, is suitable for overload flight under specific conditions, and has poor negative overload resistance and oil supply capacity. The rotary oil extractor can change along with flight overload in the maneuvering flight process, rotates around a rotating shaft in the pitching or rolling direction, ensures continuous oil supply, has stronger negative overload resistance oil supply capability, and cannot meet the requirement of multiple negative overload resistance oil supply. The elastic bag is isolated from air by fuel oil in the fuel tank, so that continuous fuel supply in the maneuvering flight process is realized, the negative overload resistance and the fuel supply capability are strong, and the defects same as those of the rotary fuel extractor exist, namely, the internal fuel oil is gradually reduced during the negative overload period and cannot be supplemented, and the requirement of multiple and long-time negative overload resistance and fuel supply cannot be met.

Therefore, the currently used anti-negative overload oil supply device has the defects of the anti-negative overload oil supply capability and the oil supply time, and cannot meet the long-time continuous oil supply requirement of the aircraft under the condition of multiple large maneuvers.

Disclosure of Invention

Aiming at the prior art, the utility model aims to overcome the defects in the prior art and adapt to the actual needs, thereby providing the anti-negative overload oil supply device which has simple configuration and strong anti-negative overload oil supply capability and meets the multi-time and long-time anti-negative overload oil supply requirements of an aircraft.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: the utility model provides an anti-overload oil supply device, which comprises an oil tank, a liquid level sensor, an electromagnetic valve, the double-end pipeline pump, the blast pipe, the bottom advance oil pipe, top advance oil pipe, the fuelling nozzle, the exhaust nozzle, bottom advance oil nozzle, top advance oil nozzle, the fuelling pipe, the in-tank blast pipe, bottom go out oil pipe, top go out oil pipe, the defeated oil nozzle, first support and second support, defeated oil nozzle and liquid level sensor are all installed at the oil tank top, defeated oil nozzle is used for transferring the defeated oil with other oil tanks, liquid level sensor is used for measuring the in-tank liquid level, and feed back the liquid level signal who gathers to the electromagnetic valve, when the low liquid level signal that liquid level sensor gathered feeds back to the electromagnetic valve, the electromagnetic valve is opened, the oil tank is to outside exhaust, when the high liquid level signal that liquid level sensor gathered feeds back to the electromagnetic valve, the electromagnetic valve is closed, can prevent the internal combustion oil of oil tank from discharging, refuelling nozzle and fuelling pipe are connected, one end of the exhaust connector is connected with the exhaust pipe, the other end of the exhaust connector is connected with the exhaust pipe in the oil tank, the electromagnetic valve is arranged on the first support, one end of the electromagnetic valve is connected with the oil tank through the exhaust pipe, the other end of the electromagnetic valve is communicated with the atmosphere, the double-head pipeline pump is arranged on the second support, one end of the double-head pipeline pump is connected with one end of the bottom oil inlet connector through the bottom oil inlet pipe, the other end of the double-head pipeline pump is connected with one end of the top oil inlet connector through the top oil inlet pipe, the other end of the bottom oil inlet connector is connected with the bottom oil outlet pipe, the oiling connector, the exhaust connector, the bottom oil inlet connector and the top oil inlet connector are all arranged on the outer wall of the side face of the oil tank, the bottom oil outlet pipe, the top oil outlet pipe, the oiling pipe and the oil tank are all arranged in the oil tank, the bottom oil inlet pipe, the top oil inlet pipe and the exhaust pipe are all arranged on the same side outside the oil tank, and the bottom oil outlet pipe and the top oil outlet pipe are axially, the lateral and normal staggered arrangement ensures that at least one oil outlet pipe is positioned below the fuel liquid level during the negative overload period, the air inlet of the exhaust pipe in the fuel tank is close to the top of the fuel tank, and the double-head pipeline pump sucks fuel in the fuel tank through the bottom oil inlet pipe and the top oil inlet pipe respectively, and the fuel is supplied to the engine after being pressurized.

Further, the outlet of the oil delivery nozzle is flush with the top of the oil tank, the inlet of the electromagnetic valve is connected with the oil tank through an exhaust pipe, and the outlet is communicated with the atmosphere.

Further, the top of the oil tank is arc-shaped.

Further, after the oiling joint mouth, the exhaust joint mouth, the bottom oil inlet joint mouth and the top oil inlet joint mouth are respectively welded with the oiling pipe, the oil tank inner exhaust pipe, the bottom oil outlet pipe and the top oil outlet pipe, the oil tank is welded with the oil tank.

Further, the solenoid valve is an exhaust solenoid valve.

Further, the first support and the second support are welded with the outer wall of the oil tank.

Further, still include the installation base, the installation base is equipped with four, and four installation bases weld in oil tank bottom four corners department, and the oil tank is installed to aircraft organism structure through four installation bases.

Further, the fuel tank further comprises a transverse partition plate and a longitudinal partition plate, wherein the transverse partition plate and the longitudinal partition plate form a cross shape and are arranged in the fuel tank.

In order to improve the anti-negative overload oil supply capacity, the anti-negative overload oil supply device adopts the double-head pipeline pump to supply oil, and two oil suction ports of the double-head pipeline pump are staggered in the front-back direction, the left-right direction and the up-down direction in the oil tank, so that the oil can be continuously supplied as long as one oil suction port is in the fuel. Therefore, the negative overload resistant oil supply device can still continuously supply oil under the condition of negative overload in the pitching and rolling directions, and has strong negative overload resistant oil supply capability. In order to meet the requirements of the aircraft on multiple and long-time negative overload resistance oil supply, the device is provided with an exhaust electromagnetic valve and a liquid level sensor, when the liquid level sensor detects that the liquid level in the oil tank is low after single negative overload flight is finished, the exhaust electromagnetic valve is opened to discharge air in the oil tank, and the oil tank connected with a double-head pipeline pump is automatically replenished to a full oil state; when the liquid level sensor detects that the liquid level in the oil tank is higher after the oil tank is full of oil, the exhaust electromagnetic valve is closed to prevent fuel from overflowing, so that the oil tank can automatically supplement fuel after each maneuvering flight is finished.

The beneficial effects of the utility model are as follows: by adopting the technical approach, the utility model can ensure that the fuel system of the aircraft has stronger negative overload resistance and oil supply capacity, can simultaneously realize the requirement of repeated and long-time negative overload resistance and oil supply, and solves the problem of long-time continuous oil supply of the current fuel system of the aircraft under the condition of repeated large maneuvering.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic view of the external structure of the fuel tank of the present utility model;

FIG. 3 is a schematic view of the internal structure of the fuel tank of the present utility model;

fig. 4 is a partial cross-sectional view of the present utility model.

Wherein: the oil tank is characterized in that the oil tank is 1, the oil delivery nozzle is 2, the liquid level sensor is 3, the exhaust pipe is 4, the electromagnetic valve is 5, the first support is 6, the bottom oil inlet pipe is 7, the double-head pipeline pump is 8, the second support is 9, the top oil inlet pipe is 10, the oil filling nozzle is 11, the mounting base is 12, the exhaust nozzle is 13, the bottom oil inlet nozzle is 14, the top oil inlet nozzle is 15, the transverse partition plate is 16, the bottom oil outlet pipe is 17, the oil filling pipe is 18, the top oil outlet pipe is 19, the longitudinal partition plate is 20, and the exhaust pipe in the oil tank is 21.

Description of the embodiments

The following describes specific embodiments of the present utility model in detail with reference to the drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the utility model, are not intended to limit the utility model.

In the description of the present application, it should be noted that, directions or positional relationships indicated by terms such as "middle", "upper", "lower", "left", "right", "front", "rear", "inner", "outer", etc., are based on directions or positional relationships shown in the drawings, are merely for convenience of description of the present application and to simplify the description, and do not indicate or imply that the apparatus or elements to be referred to must have a specific direction, be configured and operated in the specific direction, and thus should not be construed as limiting the present application.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "disposed" and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.

It will be further understood that the terms "comprises," "comprising," "includes," "including" or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a product, apparatus, process, or method that comprises a list of elements does not include only those elements but may include other elements not expressly listed or include such product, apparatus, process, or method as desired

The method is an inherent element. Without further limitation, an element defined by the phrases "comprising/including … …," "consisting of … …," and the like, does not exclude the presence of other like elements in a product, apparatus, process, or method that includes the element.

Examples

As shown in fig. 1 to 4, the present utility model provides an anti-negative overload oil supply apparatus, comprising an oil tank 1, a liquid level sensor 3, an electromagnetic valve 5, a double-ended pipeline pump 8, an exhaust pipe 4, a bottom oil inlet pipe 7, a top oil inlet pipe 10, a refueling nozzle 11, an exhaust nozzle 13, a bottom oil inlet nozzle 14, a top oil inlet nozzle 15, a refueling pipe 18, an in-tank exhaust pipe 21, a bottom oil outlet pipe 17, a top oil outlet pipe 19, an oil delivery nozzle 2, a first support 6 and a second support 9, the oil delivery nozzle 2 and the liquid level sensor 3 are both installed on the top of the oil tank 1, the oil delivery nozzle 2 is used for transferring oil with other oil tanks, the liquid level sensor 3 is used for measuring the liquid level in the oil tank 1 and feeding back the collected liquid level signal to the electromagnetic valve 5, when the low liquid level signal collected by the liquid level sensor 3 is fed back to the electromagnetic valve 5, the electromagnetic valve 5 is opened, the oil tank 1 is exhausted to the outside, when the high liquid level signal collected by the liquid level sensor 3 is fed back to the electromagnetic valve 5, the electromagnetic valve 5 is closed, other oil tanks in the fuel system stop feeding oil to the fuel tank 1 of the utility model, and can prevent the discharge of the fuel in the fuel tank 1 of the utility model, the fueling nozzle 11 is connected with the fueling pipe 18, one end of the exhaust nozzle 13 is connected with the exhaust pipe 4, the other end is connected with the exhaust pipe 21 in the fuel tank, the electromagnetic valve 5 is arranged on the first support 6, one end of the electromagnetic valve 5 is connected with the fuel tank 1 through the exhaust pipe 4, the other end is communicated with the atmosphere, the double-head pipeline pump 8 is arranged on the second support 9, one end of the double-head pipeline pump 8 is connected with one end of the bottom fueling nozzle 14 through the bottom fueling pipe 7, the other end is connected with one end of the top fueling nozzle 15 through the top fueling pipe 10, the other end of the bottom fueling nozzle 14 is connected with the bottom fueling pipe 17, the other end of the top oil inlet connector 15 is connected with a top oil outlet pipe 19, the oiling connector 11, the exhaust connector 13, the bottom oil inlet connector 14 and the top oil inlet connector 15 are all installed on the outer wall of the side face of the oil tank 1, the bottom oil outlet pipe 17, the top oil outlet pipe 19, the oil filling pipe 18 and the inner oil tank exhaust pipe 21 are all located in the oil tank 1, the bottom oil inlet pipe 7, the top oil inlet pipe 10 and the exhaust pipe 4 are all located on the same side outside the oil tank 1, the bottom oil outlet pipe 17 and the top oil outlet pipe 19 are staggered in the axial direction, the lateral direction and the normal direction, at least one oil outlet pipe is located below the fuel level during the negative overload period, an air inlet of the inner oil tank exhaust pipe 21 is close to the top of the oil tank 1 so as to reduce the top air cushion of the oil tank 1, and the double-head pipeline pump 8 pumps fuel in the oil tank 1 through the bottom oil inlet pipe 7 and the top oil inlet pipe 10 respectively, and supplies the fuel to an engine after pressurization.

Preferably, the outlet of the oil delivery nozzle 2 is flush with the top of the oil tank 1, so that the oil tank 1 is in a full oil state after oiling, the top of the oil tank 1 is free from air, the inlet of the electromagnetic valve 5 is connected with the oil tank 1 through the exhaust pipe 4, and the outlet is communicated with the atmosphere.

Preferably, the top of the oil tank 1 is arc-shaped.

Preferably, the oiling nozzle 11, the exhaust nozzle 13, the bottom oil inlet nozzle 14 and the top oil inlet nozzle 15 are welded with the oiling pipe 18, the in-tank exhaust pipe 21, the bottom oil outlet pipe 17 and the top oil outlet pipe 19 respectively and then welded to the oil tank 1; the filler neck 11 is connected to a filler pipe of a ground fuel filling apparatus, and the filler pipe 18 introduces the filled fuel into the fuel tank 1.

Preferably, the solenoid valve 5 is an exhaust solenoid valve.

Preferably, the first support 6 and the second support 9 are both welded with the outer wall of the oil tank 1, and are respectively welded on the upper end and the lower end of the middle part of the left side of the oil tank 1, and the first support 6 is positioned at the upper end of the second support 9.

Preferably, the aircraft is characterized by further comprising four mounting bases 12, wherein the four mounting bases 12 are welded at four corners of the bottom of the oil tank 1, and the oil tank 1 is mounted on the aircraft body structure through the four mounting bases 12.

Preferably, the fuel tank also comprises a transverse partition plate 16 and a longitudinal partition plate 20, wherein the transverse partition plate 16 and the longitudinal partition plate 20 are arranged in the fuel tank 1 in a cross shape, so that the fuel shaking degree can be reduced, and the stable change of the liquid level is ensured.

In the utility model, the oil inlet of the top oil outlet pipe 19 is arranged towards the top of the oil tank 1, and the oil inlet of the bottom oil outlet pipe 17 is arranged towards the bottom of the oil tank 1.

The working principle of the utility model is as follows: the utility model comprises an oil tank 1, a liquid level sensor 3, an electromagnetic valve 5, a double-head pipeline pump 8, an exhaust pipe 4, a bottom oil inlet pipe 7 and a top oil inlet pipe 10, wherein the oil tank 1 is used for storing fuel, and the liquid level sensor 3 is arranged at the top of the oil tank 1 and is used for measuring the liquid level in the oil tank 1; the electromagnetic valve 5 is arranged on the first support 6, the inlet is connected with the oil tank 1 through the exhaust pipe 4, the outlet is communicated with the atmosphere, and in the working process, the switch is controlled according to the liquid level in the oil tank 1 and is used for exhausting the oil tank 1 when the liquid level is low; the double-end pipeline pump 8 is arranged on the second support 9, is provided with 2 oil inlets, sucks fuel oil in the fuel tank 1 through the bottom oil inlet pipe 7 and the top oil inlet pipe 10 respectively, and supplies the fuel oil to the engine after pressurization. The present utility model can be mounted to an aircraft airframe structure by 4 mounting bases 12. The structure of the oil tank is shown in fig. 2 and 3, the top of the oil tank 1 is arc-shaped, the oil delivery nozzle 2 is arranged at the top and used for transferring oil with other oil tanks, the outlet of the oil delivery nozzle is flush with the top, the oil tank is in a full oil state after oil filling, and the top of the oil tank 1 is free from air; the side surface of the oil tank 1 is provided with a refueling nozzle 11, an exhaust nozzle 13, a bottom oil inlet nozzle 14 and a top oil inlet nozzle 15, and the nozzles are welded with a refueling pipe 18, an exhaust pipe 21, a bottom oil outlet pipe 17 and a top oil outlet pipe 19 in the oil tank respectively and then welded to the oil tank 1; the bottom oil outlet pipe 17 and the top oil outlet pipe 19 are staggered in the axial direction, the lateral direction and the normal direction, so that at least one oil outlet pipe is positioned below the fuel level during the negative overload period; the inlet of the in-tank vent pipe 21 is near the top of the tank 1 to lower the top air cushion of the tank 1. The cross-shaped anti-shaking plate formed by the transverse partition plate 16 and the longitudinal partition plate 20 is arranged in the oil tank 1, so that the fuel shaking degree in the maneuvering flight process is reduced, and air in the oil tank 1 is prevented from entering the fuel pump through the bottom oil outlet pipe 17 and the top oil outlet pipe 19 in the fuel shaking process. During the maneuvering flight of the aircraft, the transverse partition plate 16 and the longitudinal partition plate 20 in the oil tank can reduce the shaking degree of the fuel oil and ensure the stable change of the liquid level; under the condition of axial, lateral and normal negative overload, the staggered arrangement of the bottom oil outlet pipe 17 and the top oil outlet pipe 19 in the oil tank in the three directions can ensure that the double-head pipeline pump 8 continuously supplies oil to the engine. After the single maneuver is finished and the attitude of the aircraft is leveled, the liquid level in the oil tank 1 is reduced due to fuel consumption, more air exists at the top, at the moment, a low liquid level signal acquired by the liquid level sensor 3 is fed back to the electromagnetic valve 5, the electromagnetic valve 5 is opened, the oil tank 1 is exhausted to the outside, the pressure is reduced, other oil tanks in the fuel system are used for delivering oil to the oil tank 1 of the utility model under the action of pressure difference among the oil tanks until the oil tank 1 of the utility model is full, at the moment, a high liquid level signal acquired by the liquid level sensor 3 is fed back to the electromagnetic valve 5, and the electromagnetic valve 5 is closed in time, so that the internal combustion oil in the oil tank 1 of the utility model is prevented from being discharged. After each maneuvering flight is finished, the oil tank 1 can be restored to an initial oil filling state according to the working flow, and the oil tank has the capability of multiple times of oil supply with negative overload resistance for a long time.

The foregoing describes specific embodiments of the present utility model. It is to be understood that the utility model is not limited to the particular embodiments described above, and that various changes or modifications may be made by those skilled in the art within the scope of the appended claims without affecting the spirit of the utility model. The embodiments of the present application and features in the embodiments may be combined with each other arbitrarily without conflict.

Claims

1. An anti-negative overload oil supply device, which is characterized in that: comprises an oil tank, a liquid level sensor, an electromagnetic valve, a double-end pipeline pump, an exhaust pipe, a bottom oil inlet pipe, a top oil inlet pipe, an oiling joint mouth, an exhaust joint mouth, a bottom oil inlet joint mouth, a top oil inlet joint mouth, an oil filling pipe, an exhaust pipe in the oil tank, a bottom oil outlet pipe, a top oil outlet pipe, an oil delivery joint mouth, a first support and a second support, wherein the oil delivery joint mouth and the liquid level sensor are both arranged at the top of the oil tank, the oil delivery joint mouth is used for transferring oil with other oil tanks, the liquid level sensor is used for measuring the liquid level in the oil tank and feeding back collected liquid level signals to the electromagnetic valve, when low liquid level signals collected by the liquid level sensor are fed back to the electromagnetic valve, the electromagnetic valve is opened, the oil tank is exhausted to the outside, when high liquid level signals collected by the liquid level sensor are fed back to the electromagnetic valve, the electromagnetic valve is closed, the internal combustion oil in the oil tank can be prevented from being discharged, the oiling joint mouth is connected with the oil filling pipe, one end of the exhaust joint mouth is connected with the exhaust pipe, the other end is connected with an exhaust pipe in the oil tank, the electromagnetic valve is arranged on the first support, one end of the electromagnetic valve is connected with the oil tank through the exhaust pipe, the other end is communicated with the atmosphere, the double-head pipeline pump is arranged on the second support, one end of the double-head pipeline pump is connected with one end of a bottom oil inlet connector through a bottom oil inlet pipe, the other end of the double-head pipeline pump is connected with one end of a top oil inlet connector through a top oil inlet pipe, the other end of the bottom oil inlet connector is connected with a bottom oil outlet pipe, the other end of the top oil inlet connector is connected with a top oil outlet pipe, the oiling connector, the exhaust connector, the bottom oil inlet connector and the top oil inlet connector are all arranged on the outer wall of the side face of the oil tank, the bottom oil outlet pipe, the top oil outlet pipe, the oiling pipe and the oil tank are all arranged in the oil tank, the bottom oil inlet pipe, the top oil inlet pipe and the exhaust pipe are all arranged on the same side outside the oil tank, and the bottom oil outlet pipe and the top oil outlet pipe are axially, the lateral and normal staggered arrangement ensures that at least one oil outlet pipe is positioned below the fuel liquid level during the negative overload period, the air inlet of the exhaust pipe in the fuel tank is close to the top of the fuel tank, and the double-head pipeline pump sucks fuel in the fuel tank through the bottom oil inlet pipe and the top oil inlet pipe respectively, and the fuel is supplied to the engine after being pressurized.

2. The negative overload resistant oil supply apparatus of claim 1, wherein: the outlet of the oil delivery nozzle is flush with the top of the oil tank, the inlet of the electromagnetic valve is connected with the oil tank through an exhaust pipe, and the outlet is communicated with the atmosphere.

3. The negative overload resistant oil supply apparatus of claim 1, wherein: the top of the oil tank is arc-shaped.

4. The negative overload resistant oil supply apparatus of claim 1, wherein: the oiling joint mouth, the exhaust joint mouth, the bottom oil inlet joint mouth and the top oil inlet joint mouth are welded with the oiling pipe, the exhaust pipe in the oil tank, the bottom oil outlet pipe and the top oil outlet pipe respectively and then welded to the oil tank.

5. The negative overload resistant oil supply apparatus of claim 1, wherein: the electromagnetic valve is an exhaust electromagnetic valve.

6. The negative overload resistant oil supply apparatus of claim 1, wherein: the first support and the second support are welded with the outer wall of the oil tank.

7. A negative overload resistant oil supply apparatus according to any one of claims 1 to 6 wherein: still including the installation base, the installation base is equipped with four, and four installation bases weld in oil tank bottom four corners department, and the oil tank is installed to aircraft organism structure through four installation bases.

8. A negative overload resistant oil supply apparatus according to any one of claims 1 to 6 wherein: the fuel tank also comprises a transverse partition plate and a longitudinal partition plate, wherein the transverse partition plate and the longitudinal partition plate form a cross shape and are arranged in the fuel tank.