CN110385980B

CN110385980B - Vehicle fuel tank

Info

Publication number: CN110385980B
Application number: CN201810366233.1A
Authority: CN
Inventors: 关勇
Original assignee: Shaanxi Heavy Duty Automobile Co Ltd
Current assignee: Shaanxi Heavy Duty Automobile Co Ltd
Priority date: 2018-04-23
Filing date: 2018-04-23
Publication date: 2022-12-20
Anticipated expiration: 2038-04-23
Also published as: CN110385980A

Abstract

The invention provides a vehicle oil tank which comprises a hollow tank body, a first partition plate, a second partition plate, an oil quantity sensor with an oil suction end, a third partition plate and a fourth partition plate, wherein the first partition plate and the second partition plate are arranged in the hollow tank body and divide the hollow tank body into an oil tank front cavity, an oil tank middle cavity and an oil tank rear cavity along the length direction of the hollow tank body; the first partition plate and the second partition plate are both provided with communicating holes; the third partition plate and the fourth partition plate are positioned in the oil tank cavity and divide the oil tank middle cavity into a front transition cavity, an oil suction cavity and a rear transition cavity along the length direction of the hollow tank body; the oil suction end of the oil quantity sensor is positioned in the oil suction cavity; the bottoms of the third partition plate and the fourth partition plate are respectively provided with at least one lower oil through hole and at least one flow limiting hole, and a one-way flow limiting device is arranged at the flow limiting hole. According to the oil tank disclosed by the invention, the condition that oil cannot be absorbed when the vehicle goes up and down a steep slope can be greatly improved, and the safety of the vehicle running on a complex road is improved.

Description

Vehicle fuel tank

Technical Field

The invention relates to the field of vehicle fuel supply systems, in particular to a vehicle fuel tank.

Background

The military off-road vehicle has the characteristics of large loading mass, large driving range and large difference of driving road conditions. Therefore, the fuel tanks of military off-road vehicles are generally larger in volume, at least 3-4 hectoliter, and even 5-6 hectoliter or more. And military off-road vehicles have higher requirements on off-road performance, and require a larger ground clearance of the oil tank, so that the length of the oil tank is generally longer. When the automobile goes up a steep slope or a downhill slope and the oil tank inclines, fuel oil flows to one end of the oil tank, and even if 1/3-1/2 of the oil in the oil tank still can not be absorbed, the engine is shut down, and the automobile is very dangerous for the automobile. The military off-road vehicle is suitable for various roads to run, and the existing fuel tank has certain defects. The problem also exists not only for military off-road vehicles, but also for other vehicles with longer oil tanks.

In view of the above-mentioned drawbacks, the inventors of the present invention have finally obtained the present invention through a long period of research and practice.

Disclosure of Invention

In order to solve the technical defects, the invention provides the vehicle oil tank which can greatly improve the condition that oil can not be absorbed when the vehicle goes up and down a steep slope and improve the safety of the vehicle running on a complex road.

The vehicle oil tank comprises a hollow tank body, a first partition plate, a second partition plate, an oil quantity inductor with an oil suction end, a third partition plate and a fourth partition plate, wherein the first partition plate and the second partition plate are arranged in the hollow tank body and divide the hollow tank body into an oil tank front cavity, an oil tank middle cavity and an oil tank rear cavity along the length direction of the hollow tank body; the first partition plate and the second partition plate are both provided with communicating holes; the third partition plate and the fourth partition plate are positioned in the oil tank cavity and divide the oil tank middle cavity into a front transition cavity, an oil suction cavity and a rear transition cavity along the length direction of the hollow tank body; the oil suction end of the oil quantity sensor is positioned in the oil suction cavity; the bottom of the third partition plate and the bottom of the fourth partition plate are both provided with at least one lower oil through hole and at least one flow limiting hole, a one-way flow limiting device is arranged at the flow limiting hole, and the one-way flow limiting device only allows oil to flow to the oil suction cavity in a one-way mode through the flow limiting hole.

According to the vehicle oil tank disclosed by the invention, when a vehicle ascends and descends, the oil quantity of the oil suction cavity is increased, so that the oil quantity sensor can suck oil, and further, the dangerous condition caused by flameout of the vehicle is avoided to a greater extent.

In addition, a vehicle fuel tank according to the invention may also have the following additional features:

according to the vehicle oil tank, the one-way flow limiting device is a one-way valve.

Furthermore, the check valve comprises a fixing plate and a baffle plate, wherein a through hole is formed in the fixing plate, the circumferential edge of the through hole protrudes outwards, the baffle plate covers the through hole, and the upper part of the baffle plate is hinged with the fixing plate; the fixing piece is fixed on the side wall of the third partition plate and the side wall of the fourth partition plate facing the oil suction cavity, and the through hole is communicated with the flow limiting hole.

Therefore, when a vehicle goes up and down a slope, the oil tank inclines, when oil flows to the rear cavity of the oil tank from the front cavity of the oil tank or flows to the front cavity of the oil tank from the rear cavity of the oil tank, the oil firstly enters the front transition cavity or the rear transition cavity through the communication hole of the first partition plate or the second partition plate, at this moment, if the oil in the oil tank is small, the oil can flow into the oil suction cavity from the check valve and the lower oil through hole which flow through the flow limiting hole at the bottom of the third partition plate or the fourth partition plate, and due to the action of the check valve, the oil can only flow out of the oil suction cavity from the lower oil through hole of the fourth partition plate or the third partition plate, the obvious instantaneous flow which flows into the oil suction cavity is larger than the instantaneous flow which flows out of the oil suction cavity, so that the liquid level in the oil suction cavity can rise, the oil sensor can suck oil, the normal work of an engine is ensured, and the risk of flameout of the engine is avoided.

Furthermore, the plane outer contour and the area of the first partition plate, the second partition plate, the third partition plate and the fourth partition plate are the same as the contour and the area of the inner cavity of the cross section of the hollow box body in the width direction.

Therefore, the partition plates can be tightly connected to the inside of the oil tank, and oil in each cavity can only circulate through the holes in the partition plates.

Further, the positions of the communication holes on the first separator and the second separator correspond to each other; the upper half parts of the third partition plate and the fourth partition plate are respectively provided with an upper oil through hole, and the positions and the number of the upper oil through holes correspond to the communication holes of the upper half parts of the first partition plate and the second partition plate.

Therefore, when the oil quantity in the oil tank is sufficient, the oil can smoothly circulate in each cavity.

Further, the number of the lower oil through holes and the number of the flow restricting holes in each of the third partition plate and the fourth partition plate are one and four.

Therefore, the bottom of the third partition plate or the fourth partition plate is provided with the four flow limiting holes and the lower oil through hole, so that the oil suction cavity can be better ensured to keep a higher liquid level, and the stability of the oil suction effect is further ensured.

Furthermore, the oil tank front cavity, the oil tank middle cavity and the oil tank rear cavity are sequentially arranged along the length direction of the hollow tank body.

Furthermore, the front transition cavity, the oil suction cavity and the rear transition cavity are sequentially arranged along the length direction of the hollow box body, the front transition cavity is adjacent to the front cavity of the oil tank, and the rear transition cavity is adjacent to the rear cavity of the oil tank.

Further, the first partition plate and the second partition plate are symmetrically arranged relative to a central line of the oil quantity sensor; the third baffle with the fourth baffle sets up for oil mass inductor central line symmetry, the oil mass inductor is located cavity box length direction's intermediate position.

Therefore, the sizes of the front cavity and the rear cavity of the oil tank in the oil tank are the same, and the sizes of the front transition cavity and the rear transition cavity are the same; therefore, when the vehicle goes up a slope or goes down a slope, enough oil can be ensured to flow into the oil suction cavity.

Further, the volume of the oil suction cavity is smaller than any volume of the oil tank front cavity and the oil tank rear cavity.

As can be understood, the volume of the oil suction cavity is small, the height of the liquid level in the oil suction cavity can be increased in a short time, and the oil suction process is facilitated.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

FIG. 1 is a schematic view of the overall structure of a vehicle fuel tank according to an embodiment of the present invention;

FIG. 2 is a schematic structural view of a first separator according to an embodiment of the present invention;

FIG. 3 is a schematic structural view of a third separator according to an embodiment of the present invention;

fig. 4 is a cross-sectional view of a one-way valve of an embodiment of the present invention.

Description of reference numerals:

1. hollow box body 2 and oil tank front cavity

3. First separator 31, communication hole

4. Front transition cavity 5 and third partition plate

51. Lower oil through hole 52 and one-way valve

521. Fixing sheet 522 and baffle

523. Pin 524, through hole

53. Upper oil hole 6, oil quantity sensor

7. Oil suction cavity 8 and fourth partition plate

9. Rear transition chamber 10, second partition

11. Oil tank rear cavity

Detailed Description

The above and further features and advantages of the present invention are described in more detail below with reference to the accompanying drawings.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description of the present invention, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two unless specifically defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature "under," "beneath," and "under" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Moreover, various embodiments or examples and features of various embodiments or examples described in this specification can be combined and combined by one skilled in the art without being mutually inconsistent.

Fig. 1 is a general structure of a vehicle fuel tank illustrating one embodiment of the present invention.

As shown in fig. 1 and 2, the fuel tank in this embodiment includes a hollow tank 1, a first partition 3 and a second partition 10, a fuel quantity sensor 6 having a fuel suction end, a third partition 5 and a fourth partition 8, wherein the first partition 3 and the second partition 10 are disposed inside the hollow tank 1 and divide the hollow tank into a fuel tank front cavity 2, a fuel tank middle cavity and a fuel tank rear cavity 11 along the length direction of the hollow tank; the first partition plate 3 and the second partition plate 10 are both provided with communication holes.

The oil tank front cavity the oil tank lumen reaches the oil tank rear cavity is arranged along cavity box length direction in proper order.

In some specific embodiments, the communication holes 31 in the first separator 3 have different diameters, and preferably the communication holes 31 are divided into a large communication hole, a middle communication hole, and a small communication hole according to the diameter. A large communication hole is arranged at the center of the first clapboard 3; the nine small communication holes are formed in the periphery of the first partition plate 3 and are symmetrically arranged relative to the transverse center line and the longitudinal center line of the first partition plate 3 respectively; the four middle communication holes are arranged around the large communication hole and are positioned between the large communication hole and the small communication hole, wherein two middle communication holes are respectively positioned above and below the large communication hole, the circle centers of the two middle communication holes are positioned on the longitudinal central line of the first partition plate 3, the other two middle communication holes are respectively positioned on two sides of the large communication hole, and the circle centers of the two middle communication holes are positioned on the transverse central line of the first partition plate 3;

preferably, the first separator 3 and the second separator 10 have the same shape and structure.

It can be understood that when the vehicle goes up a slope, the oil tank will also incline, at this time, the front oil tank cavity 2 is higher than the rear oil tank cavity 11, the oil in the front oil tank cavity 2 flows to the rear oil tank cavity 11 through the communication holes of the first partition plate 3 and the second partition plate 10 in sequence; when the vehicle goes downhill, the oil tank rear cavity 11 is higher than the oil tank front cavity 2, and oil in the oil tank rear cavity 11 flows to the oil tank front cavity 2 through the communication holes of the second partition plate 10 and the first partition plate 3 in sequence.

As shown in fig. 1, 2 and 3, the third partition plate 5 and the fourth partition plate 8 are located in the oil tank cavity and divide the oil tank cavity into a front transition cavity 4, an oil suction cavity 7 and a rear transition cavity 9 along the length direction of the hollow tank body; the oil suction end of the oil quantity sensor 6 is positioned in the oil suction cavity 7; the bottom parts of the third partition plate 5 and the fourth partition plate 8 are both provided with a lower oil through hole 51 and a flow limiting hole, a one-way valve 52 is arranged at the flow limiting hole, and the one-way valve 52 only allows the oil to flow to the oil suction cavity 7 in a one-way mode through the flow limiting hole.

The front transition cavity, the oil suction cavity and the rear transition cavity are sequentially arranged along the length direction of the hollow box body, the front transition cavity is adjacent to the front cavity of the oil tank, and the rear transition cavity is adjacent to the rear cavity of the oil tank.

Preferably, the first partition plate 3, the second partition plate 10, the third partition plate 5, and the fourth partition plate 8 have the same plane outer contour and area as those of the cross-sectional inner cavity of the hollow box in the width direction.

In some specific embodiments, the third partition 5 is provided with upper oil through holes 53, the center of the upper oil through holes 53 is arranged on and above the transverse center line of the third partition 5, and the number, position and diameter of the upper oil through holes 53 correspond to those of the communication holes 31 of the first partition 3. A lower oil through hole 51 and four flow-limiting holes are arranged below the upper oil through hole 53 at the lowest position of the third partition plate, the lower oil through hole 51 is arranged in the middle, and the lower oil through holes 51 below the flow-limiting holes are symmetrically arranged on the left side and the right side of the lower oil through hole 51 in pairs by taking the lower oil through hole 51 as the center.

Preferably, the lower oil passing hole 51 and the restricting hole are provided at the bottom of the third partition 5. The shape and structure of the third separator 5 and the fourth separator 8 are identical.

The one-way valve is arranged at a relatively low position, so that oil in the cavity can easily flow, and the one-way valve can be soaked in the oil to buffer impact and reduce emitted sound when a vehicle shakes.

As shown in fig. 4, the check valve 52 includes a fixing plate 521 and a blocking plate 522, wherein a through hole 524 is formed in the fixing plate, the circumferential edge of the through hole 524 protrudes outwards, the blocking plate 522 covers the through hole 524, and the blocking plate 522 is hinged to the fixing plate 521 above the blocking plate 522; the fixing plate 521 is fixed on the third partition plate 5 and the side wall of the fourth partition plate 8 facing the oil suction cavity 7, the through hole 524 is communicated with the flow limiting hole, the baffle 522 is hinged to the fixing plate 521 through a pin roll 523, and the fixing plate 521 seals the periphery of the flow limiting hole.

Therefore, when a vehicle goes up and down a slope, the oil tank is inclined, when oil flows from the front oil tank cavity 2 to the rear oil tank cavity 11, or when oil flows from the rear oil tank cavity 11 to the front oil tank cavity 2, the oil firstly flows into the front transition cavity 4 or the rear transition cavity 9 through the communication hole 31 of the first partition plate 3 or the second partition plate 10, at this time, if the oil in the oil tank is small, the oil can flow into the oil suction cavity from the check valve 52 and the lower oil through hole 51 which flow through the flow limiting hole at the bottom of the third partition plate 5 or the fourth partition plate 8, and due to the action of the check valve 52, (when the oil flows into the oil suction cavity 7, the oil can push the baffle 522 away through the flow limiting hole 524 of the check valve 52, and when the oil flows out of the oil suction cavity 7, the baffle is blocked by the protrusion at the circumferential edge of the through hole 524 on the fixing plate 521, so that the oil cannot flow through the through hole 524 and then cannot flow out of the oil suction cavity 7), obviously, the oil can only flow out of the lower oil through the oil through hole 51 of the fourth partition plate 5 or the third partition plate 8, and the oil suction cavity 7 can be raised, and the danger of engine can be avoided, and the engine can be avoided.

In some specific embodiments, there are one lower oil passage hole 51 and four restriction holes in each of the third and fourth partition plates.

Therefore, the bottom of the third partition plate or the fourth partition plate is provided with the four limiting holes and the lower oil through hole 51, so that oil can pass through five holes when flowing into the oil suction cavity, only one hole is used for oil to flow out when the oil flows out of the oil suction cavity, the oil suction cavity is guaranteed to keep a higher liquid level, and the stability of an oil suction effect is further guaranteed.

In some specific embodiments, the first partition plate 3 and the second partition plate 10 are symmetrically arranged with respect to a center line of the oil amount sensor 6; third baffle 5 with fourth baffle 8 sets up for 6 central lines symmetries of oil mass inductor, oil mass inductor 6 is located 1 length direction's of cavity intermediate position.

Therefore, the sizes of the front cavity and the rear cavity of the oil tank in the oil tank are the same, and the sizes of the front transition cavity and the rear transition cavity are the same; therefore, when the vehicle goes up a slope or down a slope, enough oil can be ensured to flow into the oil suction cavity.

In some specific embodiments, the volume of the oil suction cavity is smaller than the volume of either the front oil tank cavity or the rear oil tank cavity.

In some more specific embodiments, the length of the hollow box is 1400mm, the distance between the third partition 5 and the fourth partition 8 is 200mm, and the distance between the first partition 3 and the second partition 10 is 560mm.

The foregoing is merely a preferred embodiment of this invention, which is intended to be illustrative, and not limiting. The structure, the connection mode and the like of all the components in the invention can be changed, and the equivalent transformation and the improvement on the basis of the technical scheme of the invention are not excluded from the protection scope of the invention.

Claims

1. A vehicle fuel tank comprising:

a hollow box body;

the first partition plate and the second partition plate are arranged in the hollow box body and divide the hollow box body into an oil tank front cavity, an oil tank middle cavity and an oil tank rear cavity along the length direction of the hollow box body; the first partition plate and the second partition plate are both provided with communicating holes;

an oil quantity sensor with an oil suction end;

it is characterized in that the oil tank further comprises:

the third partition plate and the fourth partition plate are positioned in the oil tank cavity and divide the oil tank middle cavity into a front transition cavity, an oil suction cavity and a rear transition cavity along the length direction of the hollow tank body; the oil suction end of the oil quantity sensor is positioned in the oil suction cavity;

the bottoms of the third partition plate and the fourth partition plate are respectively provided with a lower oil through hole and four flow limiting holes, the flow limiting holes are provided with one-way flow limiting devices, and the one-way flow limiting devices only allow the oil to flow to the oil suction cavity in one way through the flow limiting holes;

the one-way flow limiting device is a one-way valve; the check valve comprises a fixing piece and a baffle, wherein a through hole is formed in the fixing piece, the circumferential edge of the through hole protrudes outwards, the baffle covers the through hole, and the upper part of the baffle is hinged with the fixing piece; the fixing pieces are fixed on the side walls of the third partition plate and the fourth partition plate facing the oil suction cavity, and the through holes are communicated with the flow limiting holes; the fixing plate seals the periphery of the flow limiting hole; when the oil flows out of the oil suction cavity, the oil can only flow out of the oil suction cavity from the lower oil through hole of the fourth partition plate or the third partition plate, and the instantaneous flow flowing into the oil suction cavity is larger than the instantaneous flow flowing out of the oil suction cavity.

2. A vehicle fuel tank according to claim 1, wherein the first partition, the second partition, the third partition, and the fourth partition have the same plane outer contour and area as those of the cross-sectional inner cavity in the width direction of the hollow tank.

3. A vehicle fuel tank according to claim 1, wherein the communication hole in the first partition plate and the communication hole in the second partition plate are positioned correspondingly; the upper half parts of the third partition plate and the fourth partition plate are respectively provided with an upper oil through hole, and the positions and the number of the upper oil through holes correspond to the communication holes of the upper half parts of the first partition plate and the second partition plate.

4. A vehicle fuel tank as claimed in claim 1, wherein the front tank chamber, the middle tank chamber and the rear tank chamber are arranged in sequence along the length of the hollow tank body.

5. A vehicle fuel tank according to claim 4 wherein the forward transition chamber, the suction chamber and the rearward transition chamber are arranged sequentially along the length of the hollow tank body, with the forward transition chamber adjacent the forward tank chamber and the rearward transition chamber adjacent the rearward tank chamber.

6. A vehicle fuel tank according to claim 1, wherein said first partition and said second partition are symmetrically disposed with respect to a center line of the fuel quantity sensor; the third baffle with the fourth baffle sets up for oil mass inductor central line symmetry, the oil mass inductor is located cavity box length direction's intermediate position.

7. A vehicle fuel tank according to claim 1, wherein a volume of said suction chamber is smaller than either of a volume of said tank front chamber and a volume of said tank rear chamber.