CN218542453U - Fuel pump assembly, fuel tank and vehicle - Google Patents

Abstract

The utility model provides a fuel pump assembly, a fuel tank and a vehicle, wherein the fuel pump assembly comprises an oil outlet pipeline, an oil return pipeline, an oil storage barrel and a three-way structure, wherein the first ends of the oil outlet pipeline and the oil return pipeline are communicated with an engine, and the second ends of the oil outlet pipeline and the oil return pipeline are communicated with the oil storage barrel; the tee structure is arranged in the oil storage barrel and is provided with an oil inlet, an oil outlet and a pressure relief opening, the oil inlet is communicated with the second end of the oil return pipeline, and the oil inlet can be selectively communicated with one of the oil outlet and the pressure relief opening. The utility model provides a temperature among the prior art reduces, arouses the oil return pipeline of fuel pump to block up, leads to the problem that engine system appears damaging.

Description

Fuel pump assembly, fuel tank and vehicle

Technical Field

The utility model relates to an engine equipment technical field particularly, relates to a fuel pump assembly, fuel tank and vehicle.

Background

In a diesel oil supply system, a fuel pump provides fuel for an engine, meanwhile, redundant fuel flows back to a fuel storage barrel of the fuel pump through a Venturi tube, the temperature of the venturi of the conventional fuel pump is low due to the fact that the venturi is equivalent to a throttle valve, when the ambient temperature is reduced, the nozzle of the venturi can be frozen, an oil return pipeline is blocked, and the engine system is damaged due to abnormal pressure or leaks oil after the pipeline pressure is too high.

SUMMERY OF THE UTILITY MODEL

A primary object of the utility model is to provide a fuel pump subassembly, fuel tank and vehicle to the temperature that solves among the prior art reduces, causes the oil return pipe of fuel pump to block up, leads to the problem that engine system appears damaging.

In order to achieve the above object, according to an aspect of the present invention, a fuel pump assembly is provided, which includes an oil outlet pipeline, an oil return pipeline, an oil storage barrel, and a three-way structure, wherein first ends of the oil outlet pipeline and the oil return pipeline are both communicated with an engine, and second ends of the oil outlet pipeline and the oil return pipeline are both communicated with the oil storage barrel; the tee bend structure sets up in the oil storage bucket, and the tee bend structure has oil inlet, oil-out, pressure release mouth, and the oil inlet communicates with oil return line's second end, and oil inlet alternative and one of oil-out and pressure release mouth communicates.

Furthermore, the three-way structure comprises a first pipe section, a second pipe section and an adjusting piece, wherein the first end of the first pipe section is communicated with the second end of the oil return pipeline; a communicating opening is formed in the side wall of the second pipe section, the second pipe section is communicated with the second end of the first pipe section through the communicating opening, an oil outlet and a pressure relief opening are formed in the first end and the second end of the second pipe section respectively, the oil outlet is formed in the end portion of the first end of the second pipe section, and the pressure relief opening is formed in the side wall surface of the second end of the second pipe section; the regulating member is positioned in the second pipe section, and at least one part of the regulating member is used for opening and closing the pressure relief opening.

Further, the communication port and the pressure relief port are respectively formed in the side wall surfaces of the second pipe section in different directions.

Furthermore, the pressure relief opening is strip-shaped, and the strip-shaped pressure relief opening extends along the axial direction of the second pipe section.

Further, the adjusting piece comprises an elastic piece and a ball body, wherein the elastic piece is positioned in the second pipe section, and the first end of the elastic piece is abutted with the inner wall surface of the end part of the second end of the second pipe section; the ball body is positioned at the second end side of the elastic piece and connected with the second end of the elastic piece, and the ball body is used for opening and closing the pressure relief port; wherein, when the oil-out is frozen or when blockking up, the oil pressure in the second section of pipe increases to make the spheroid move and extrude the elastic component towards elastic component one side under the oil pressure effect, in order to open the pressure release mouth, when the oil-out is unobstructed, the oil pressure in the second section of pipe reduces, and the elastic component that is under the compression state resumes to warp and provides the elastic force that moves towards the first end of second section of pipe for the spheroid.

Further, the diameter of the sphere is equal to the pipe diameter of the second pipe section.

Furthermore, at least one part of the pipe section of the oil return pipeline is provided with a heating element for heating the fuel oil in the oil return pipeline.

Furthermore, the oil return pipeline comprises an oil pipe, a heat conduction structure and a protective sleeve, wherein the heat conduction structure is wrapped on the outer periphery of the oil pipe; the periphery side at heat conduction structure is wrapped up in to the lag.

Further, the heat conducting structure comprises a heating wire and an aluminum foil, wherein the heating wire is positioned on the outer surface of the oil pipe and extends along the axial direction of the oil pipe; the aluminum foil is wrapped on the periphery of the oil pipe and the heating wire.

Furthermore, the heating wire is a plurality of, and a plurality of heating wires are arranged around the periphery side of oil pipe at intervals.

According to the utility model discloses an on the other hand provides a fuel tank, and the fuel tank includes fuel pump assembly, and fuel pump assembly is foretell fuel pump assembly.

According to the utility model discloses a further aspect provides a vehicle, including the fuel tank, the fuel tank is foretell fuel tank.

Use the technical scheme of the utility model, through set up three-way structure in the oil storage bucket, it is connected with three-way structure's oil inlet to return oil pipe way, when three-way structure is in normal operating condition, oil inlet and oil-out intercommunication, in order to flow back to the oil storage bucket through the fuel-out in will returning oil pipe way fuel through the oil-out, when freezing or blockking up when the oil-out, three-way structure is in abnormal operating condition, pressure release mouth and oil inlet intercommunication, in order to flow back to the oil storage bucket through the fuel in the oil release mouth will return oil pipe way, thus, when the oil-out is frozen or is blockked up, can flow back to the oil storage bucket through the fuel in will returning oil pipe way through the pressure release mouth, reduce the pressure in the oil return pipe way, avoid the oil leak to appear, cause the harm to engine system.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 shows a schematic structural view of a fuel pump assembly according to an alternative embodiment of the present invention;

FIG. 2 is a schematic structural view illustrating a first perspective of the fuel pump assembly of FIG. 1;

FIG. 3 is a schematic structural view illustrating a second perspective of the fuel pump assembly of FIG. 1;

FIG. 4 is a schematic structural view illustrating a third perspective of the fuel pump assembly of FIG. 1;

FIG. 5 is a schematic structural view of a three-way structure of the fuel pump assembly of FIG. 1;

FIG. 6 isbase:Sub>A schematic cross-sectional view taken from the perspective A-A of FIG. 5;

FIG. 7 is a schematic cross-sectional view of the view B-B in FIG. 5;

FIG. 8 shows a cross-sectional structural view of a return line of the fuel pump assembly of FIG. 1.

Wherein the figures include the following reference numerals:

10. an oil outlet pipeline;

20. an oil return line; 21. an oil pipe is communicated; 22. a heat conducting structure; 221. a heating wire; 222. aluminum foil; 23. a protective sleeve;

30. an oil storage barrel;

40. a three-way structure; 41. an oil inlet; 42. an oil outlet; 43. a pressure relief port; 44. a first tube section; 45. a second tube section; 46. an adjustment member; 461. an elastic member; 462. a sphere;

50. an oil return nozzle; 60. an oil outlet nozzle; 70. a connector; 80. a three-way bracket; 90. a flange.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without making creative efforts belong to the protection scope of the present invention.

In order to solve the temperature reduction among the prior art, arouse that the oil return pipeline of fuel pump blocks up, leads to the problem that engine system appears damaging, the utility model provides a fuel pump module, fuel tank and vehicle, wherein, the vehicle includes the fuel tank, and the fuel tank is above-mentioned and following fuel tank, and the fuel tank includes fuel pump module, and fuel pump module is above-mentioned and following fuel pump module.

As shown in fig. 1 to 8, the fuel pump assembly includes an oil outlet pipeline 10, an oil return pipeline 20, an oil storage barrel 30 and a three-way structure 40, wherein first ends of the oil outlet pipeline 10 and the oil return pipeline 20 are both communicated with the engine, and second ends of the oil outlet pipeline 10 and the oil return pipeline 20 are both communicated with the oil storage barrel 30; a three-way structure 40 is disposed in the oil storage bucket 30, the three-way structure 40 has an oil inlet 41, an oil outlet 42, and a pressure relief opening 43, the oil inlet 41 is communicated with the second end of the oil return line 20, and the oil inlet 41 can be selectively communicated with one of the oil outlet 42 and the pressure relief opening 43.

Use the technical scheme of the utility model, through set up three-way structure 40 in oil storage bucket 30, it is connected with three-way structure 40's oil inlet 41 to return oil pipe way 20, when three-way structure 40 is in normal operating condition, oil inlet 41 and oil-out 42 intercommunication, in order to flow back to oil storage bucket 30 through the fuel-out 42 in will returning oil pipe way 20, when oil-out 42 is frozen or blockked up, three-way structure 40 is in abnormal operating condition, pressure release 43 and oil inlet 41 intercommunication, in order to flow back to oil storage bucket 30 through the fuel backward flow in the oil pipe way 20 of pressure release 43, thus, when oil-out 42 is frozen or blockked up, can flow back to oil storage bucket 30 through the fuel in the oil pipe way 20 through pressure release 43, reduce the pressure in the oil pipe way 20 that returns, avoid appearing the oil leak, cause the harm to engine system.

As shown in fig. 5 to 7, the three-way structure 40 includes a first pipe segment 44 and a second pipe segment 45, wherein a first end of the first pipe segment 44 communicates with a second end of the oil return line 20, and an adjusting piece 46; a communication port is formed in the side wall of the second pipe section 45, the second pipe section 45 is communicated with the second end of the first pipe section 44 through the communication port, and an oil outlet 42 and a pressure relief port 43 are respectively formed at the first end and the second end of the second pipe section 45, wherein the oil outlet 42 is formed at the end part of the first end of the second pipe section 45, and the pressure relief port 43 is formed in the side wall surface of the second end of the second pipe section 45; an adjuster 46 is located within the second tube section 45 and at least a portion of the adjuster 46 is used to open and close the pressure relief vent 43. Therefore, redundant fuel oil flows back into the first pipe section 44 through the oil return pipeline 20 and enters the second pipe section 45 through the communication port, the returned fuel oil enters the oil storage barrel 30 through the oil outlet 42, when the temperature is reduced and the oil outlet 42 is frozen, the fuel oil in the oil return pipeline 20 continuously flows back, so that the pressure at the position of the adjusting piece 46 is increased, the fuel oil pushes at least one part of the adjusting piece 46 to open the pressure relief port 43, and the returned fuel oil enters the oil storage barrel 30 through the pressure relief port 43 so as to reduce the pressure in the oil return pipeline 20 and avoid the phenomenon of oil leakage caused by overlarge pressure in the oil return pipeline 20 and damage of an engine system.

In the present application, the communication port and the relief port 43 are formed in side wall surfaces of the second pipe section 45 that face in different directions. Therefore, the communication port and the pressure relief port 43 are respectively formed in the side wall surfaces of the second pipe section 45 in different directions, so that the pressure of the fuel on the pipe wall of the second pipe section 45 is reduced, and the phenomenon of oil leakage caused by overlarge pressure of the pipe wall of the second pipe section 45 is avoided.

As shown in fig. 6, the adjusting member 46 includes an elastic member 461 and a ball 462, wherein the elastic member 461 is located in the second tube 45, and a first end of the elastic member 461 abuts against an inner wall surface of an end portion of a second end of the second tube 45; a ball 462 located at a second end side of the elastic member 461 and connected to a second end of the elastic member 461, the ball 462 being for opening and closing the pressure relief port 43; when the oil outlet 42 is frozen or blocked, the oil pressure in the second pipe segment increases, so that the ball 462 moves towards one side of the elastic element 461 under the action of the oil pressure and presses the elastic element 461 to open the pressure relief port 43, and when the oil outlet 42 is unobstructed, the oil pressure in the second pipe segment 45 decreases, and the elastic element 461 in the compressed state recovers to deform and provides the ball 462 with an elastic force moving towards the first end of the second pipe segment 45. Thus, when the oil outlet 42 is frozen, the fuel oil continuously enters the second pipe section 45, which causes the pressure on the side of the ball 462 contacting the fuel oil to gradually increase, when the pressure generated by the fuel oil on the ball 462 exceeds the elastic force of the elastic element 461 on the ball 462, the ball 462 moves in the direction away from the oil outlet 42, and gradually opens the pressure relief opening 43, the fuel oil flows out through the pressure relief opening 43 and enters the oil storage barrel 30, when the oil outlet 42 is unobstructed, the oil pressure in the second pipe section 45 decreases and is less than the elastic force of the elastic element 461 on the ball 462, the ball 462 moves close to the oil outlet 42, and gradually closes the pressure relief opening 43, so that the fuel oil enters the oil storage barrel 30 from the oil outlet 42, the oil quantity in the oil storage barrel 30 is ensured, and the purpose of protecting the fuel oil system is achieved.

Alternatively, the first end of the elastic member 461 is welded to the inner wall surface of the end of the second tube 45 to prevent the elastic member 461 from shaking, and of course, the second end of the elastic member 461 may also be welded to the ball 462.

As shown in fig. 5, the pressure relief port 43 is strip-shaped, and the strip-shaped pressure relief port 43 extends in the axial direction of the second pipe section 45. Thus, the strip-shaped pressure relief port 43 extends along the axial direction of the second pipe section 45, so that the ball 462 opens the pressure relief ports 43 with different sizes according to the oil pressure of the second pipe section 45, the oil quantity in the oil storage barrel 30 is ensured, and the purpose of protecting the fuel system is achieved.

It should be noted that, in the present application, the diameter of the sphere 462 is equal to the pipe diameter of the second pipe segment 45. Thus, when the oil outlet 42 works normally, the ball 462 blocks the fuel to prevent the fuel from flowing out through the pressure relief opening 43.

In the embodiment not shown in the present application, at least a portion of the pipe section of the oil return line 20 is provided with a heating element for heating the fuel in the oil return line 20. Therefore, the heating element heats the fuel oil in the oil return pipeline 20, the phenomenon that the fuel oil is frozen due to the reduction of the ambient temperature is avoided, and the engine system keeps normal operation.

As shown in fig. 8, the oil return line 20 includes an oil pipe 21, a heat conducting structure 22 and a protective sleeve 23, wherein the heat conducting structure 22 is wrapped on the outer periphery of the oil pipe 21; the protective jacket 23 is wrapped around the outer circumference of the heat conducting structure 22. Therefore, the fuel flows through the fuel pipe 21, the temperature of the fuel is increased through the heat conducting structure 22, the fuel pipe 21 and the heat conducting structure 22 are protected through the protecting sleeve 23, and the phenomenon that the fuel in the fuel pipe 21 is sounded and frozen is avoided.

It should be noted that, in the present application, the three-way structure 40 is connected to the swirl pot 30 through the three-way bracket 80.

As shown in fig. 8, the heat conducting structure 22 includes a heating wire 221 and an aluminum foil 222, wherein the heating wire 221 is located on the outer surface of the oil pipe 21, and the heating wire 221 is disposed to extend in the axial direction of the oil pipe 21; the aluminum foil 222 is wrapped around the outer circumferential sides of the oil pipe 21 and the heater wire 221. In this way, the heating wire 221 is located on the outer surface of the oil pipe 21 and is arranged along the axial extension of the oil pipe 21, so that heat is transferred along the axial direction of the oil pipe 21, the aluminum foil 222 wraps the outer peripheral sides of the oil pipe 21 and the heating wire 221, and the heat is transferred along the circumferential direction of the oil pipe 21, so that the fuel in the oil pipe 21 is heated more uniformly.

In the present application, the heater wire 221 is provided in plurality, and the heater wires 221 are provided at intervals around the outer circumferential side of the oil pipe 21. Thus, the plurality of heating wires 221 accelerate the temperature rise of the oil pipe 21, and the heating efficiency is improved.

It should be noted that, in the present application, the fuel pump assembly further includes a flange 90, and an oil return nozzle 50, an oil outlet nozzle 60 and a connector 70 are disposed on the flange 90, wherein fuel enters the engine through the oil outlet nozzle 60 from the oil outlet pipeline 10, excess fuel flows into the oil return pipeline 20 from the oil return nozzle 50, the connector 70 is communicated with an external power supply, when an ambient temperature is lower than a set value, the oil outlet 42 is blocked by freezing, fuel enters the oil storage barrel 30 through the pressure relief port 43, and meanwhile, the fuel pump assembly is powered on, so that a temperature of the returned fuel rises, the oil outlet 42 is recovered to be smooth, and normal operation of the fuel system is ensured.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

Unless specifically stated otherwise, the relative arrangement of parts and steps, numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

For ease of description, spatially relative terms such as "over … …", "over … …", "over … …", "over", etc. may be used herein to describe the spatial positional relationship of one device or feature to another device or feature as shown in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular forms "a", "an", and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (12)

1. A fuel pump assembly, comprising:

the oil recovery device comprises an oil outlet pipeline (10), an oil return pipeline (20) and an oil storage barrel (30), wherein first ends of the oil outlet pipeline (10) and the oil return pipeline (20) are communicated with an engine, and second ends of the oil outlet pipeline (10) and the oil return pipeline (20) are communicated with the oil storage barrel (30);

three-way structure (40), three-way structure (40) set up in oil storage bucket (30), three-way structure (40) have oil inlet (41), oil-out (42), pressure release mouth (43), oil inlet (41) with return oil pipe way (20)'s second end intercommunication, just oil inlet (41) selectively with oil-out (42) with one of pressure release mouth (43) communicates.

2. The fuel pump assembly of claim 1, wherein the tee structure (40) comprises:

a first pipe section (44), a first end of the first pipe section (44) being in communication with a second end of the oil return line (20);

a communication port is formed in the side wall of the second pipe section (45), the second pipe section (45) is communicated with the second end of the first pipe section (44) through the communication port, the first end and the second end of the second pipe section (45) are respectively provided with the oil outlet (42) and the pressure relief port (43), the oil outlet (42) is formed in the end portion of the first end of the second pipe section (45), and the pressure relief port (43) is formed in the side wall surface of the second end of the second pipe section (45);

an adjustment member (46), said adjustment member (46) being located within said second tube section (45) and at least a portion of said adjustment member (46) being adapted to open and close said pressure relief opening (43).

3. The fuel pump assembly as claimed in claim 2, characterized in that the communication opening and the pressure relief opening (43) each open on a differently oriented side wall surface of the second tube section (45).

4. The fuel pump assembly of claim 2, characterized in that the pressure relief vent (43) is strip-shaped, and the strip-shaped pressure relief vent (43) extends in the axial direction of the second tube section (45).

5. The fuel pump assembly of claim 2, wherein the adjuster (46) comprises:

an elastic member (461), wherein the elastic member (461) is positioned in the second pipe section (45), and a first end of the elastic member (461) is abutted against an inner wall surface of an end part of a second end of the second pipe section (45);

a ball (462), the ball (462) being located at a second end side of the elastic member (461) and connected to a second end of the elastic member (461), the ball (462) being used to open and close the pressure relief opening (43);

when the oil outlet (42) is frozen or blocked, the oil pressure in the second pipe section (45) is increased, so that the ball body (462) moves towards one side of the elastic element (461) under the action of the oil pressure and presses the elastic element (461) to open the pressure relief opening (43), when the oil outlet (42) is unobstructed, the oil pressure in the second pipe section (45) is reduced, and the elastic element (461) in a compressed state recovers to deform and provides the ball body (462) with an elastic force moving towards the first end of the second pipe section (45).

6. A fuel pump assembly as claimed in claim 5, characterised in that the diameter of the sphere (462) is the same as the tube diameter of the second tube section (45).

7. Fuel pump assembly according to one of claims 1 to 6, characterized in that at least a section of the return line (20) is provided with a heating element for heating the fuel located in the return line (20).

8. The fuel pump assembly according to any one of claims 1 to 6, characterized in that the return line (20) comprises:

an oil pipe (21);

the heat conduction structure (22), the heat conduction structure (22) wraps the periphery of the oil pipe (21);

the heat conduction structure comprises a protective sleeve (23), and the protective sleeve (23) is wrapped on the periphery of the heat conduction structure (22).

9. A fuel pump assembly as claimed in claim 8, characterized in that the heat conducting structure (22) comprises:

the heating wire (221) is positioned on the outer surface of the oil through pipe (21), and the heating wire (221) extends along the axial direction of the oil through pipe (21);

and the aluminum foil (222) is wrapped on the outer peripheral sides of the oil through pipe (21) and the heating wire (221).

10. The fuel pump assembly of claim 9, wherein the heater wire (221) is plural, and the plural heater wires (221) are arranged at intervals around an outer peripheral side of the oil through pipe (21).

11. A fuel tank comprising a fuel pump assembly according to any one of claims 1 to 10.

12. A vehicle characterized by comprising a fuel tank as set forth in claim 11.

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