CN218509614U

CN218509614U - Fuel pump, engine system and vehicle

Info

Publication number: CN218509614U
Application number: CN202222130855.9U
Authority: CN
Inventors: 牛瑞峰; 秦昊; 李文彬; 郭彦军; 句丙杰
Original assignee: Beijing Chehejia Automobile Technology Co Ltd
Current assignee: Beijing Chehejia Automobile Technology Co Ltd
Priority date: 2022-08-12
Filing date: 2022-08-12
Publication date: 2023-02-21
Anticipated expiration: 2032-08-12

Abstract

The utility model discloses a fuel pump, engine system and vehicle, including the pump body and relief pressure valve, have the first oil circuit and the second oil circuit of mutual intercommunication in the pump body, first oil circuit be suitable for with the engine intercommunication, the second oil circuit be suitable for with pump core intercommunication, the relief pressure valve is established in the pump body, the one end and the first oil circuit intercommunication of relief pressure valve, the other end and the second oil circuit intercommunication of relief pressure valve. The utility model discloses a fuel pump can reduce the risk that the vehicle collision takes place to catch fire.

Description

Fuel pump, engine system and vehicle

Technical Field

The utility model relates to the technical field of vehicles, concretely relates to fuel pump, engine system and vehicle.

Background

Hybrid vehicles are increasingly recognized by the market due to their advantages of low fuel consumption, high endurance, good dynamic properties, etc. However, due to the complex components of the hybrid vehicle, the safety requirements of the traditional fuel vehicle and the electric vehicle need to be met. The fuel pump among the correlation technique because the oil pump possesses great pressurize function to lead to low pressure oil circuit internal pressure higher, when the vehicle bumps, the low pressure oil circuit is when being extrudeed, because internal pressure is higher, the low pressure oil circuit takes place to break easily, and the oil pipe after breaking can spray everywhere because under the high pressure, and its injection scope is great, and it is great to meet naked light probability, thereby has great potential safety hazard.

SUMMERY OF THE UTILITY MODEL

The present invention aims at solving at least one of the technical problems in the related art to a certain extent. Therefore, the embodiment of the utility model provides a fuel pump can reduce the risk that the vehicle collision takes place to catch fire.

The embodiment of the utility model provides an engine system has still been provided.

The embodiment of the utility model provides a vehicle has still been provided.

The utility model discloses fuel pump, include: the pump comprises a pump body, a first oil path and a second oil path, wherein the pump body is internally provided with the first oil path and the second oil path which are communicated with each other; the pressure reducing valve is arranged in the pump body, one end of the pressure reducing valve is communicated with the first oil way, and the other end of the pressure reducing valve is communicated with the second oil way.

The embodiment of the utility model provides a fuel pump through setting up the relief pressure valve, can adjust the oil circuit trend, passes out the pump body with the pressure in the fuel pump to with the pressure uninstallation in the fuel pump, reduced the fuel pump its inside pressure under standby state, when avoiding the vehicle to collide, the fuel pump damages and leads to the vehicle to take place the risk of catching fire because of the collision.

In some embodiments, the pressure reducing valve is located at a connection of the first oil passage and the second oil passage.

In some embodiments, the pressure reducing valve includes a first valve core and a first elastic member, the first elastic member is sleeved on the first valve core, one end of the first elastic member abuts against an inner wall surface of the pump body, and the other end of the first elastic member abuts against the first valve core.

In some embodiments, the pressure reducing valve further includes a guide post provided on an inner wall surface of the pump body, the guide post extends along a length direction of the first elastic member, the first elastic member is fitted over the guide post, and the first valve element and the guide post are arranged at an interval in the length direction of the first elastic member.

In some embodiments, the fuel pump further comprises a pressure regulating valve, and the pump body further has a third oil path therein, one end of the third oil path is communicated with the first oil path, and the other end of the third oil path is connected with the pressure regulating valve.

In some embodiments, the pressure regulating valve includes a second elastic member and a second spool, one end of the second elastic member abuts against an inner wall surface of the pump body, and the other end of the second elastic member abuts against the second spool.

In some embodiments, the pressure reducing valve is located at a junction of the first oil passage, the second oil passage, and the third oil passage.

In some embodiments, the fuel pump further comprises an injection component, and the injection component is connected with the second oil path.

In some embodiments, the pump body further includes a fourth oil path, one end of the fourth oil path is communicated with the pump core, and the other end of the fourth oil path is communicated with the ejector component.

The utility model discloses an engine system, include: the fuel pump is the fuel pump of any one of the embodiments; an engine connected to the first oil passage.

The utility model discloses engine system through setting up the relief pressure valve, can adjust the oil circuit trend, passes out the pump body with the pressure in the fuel pump to with the pressure uninstallation in the fuel pump, reduced the fuel pump its inside pressure under standby state, when avoiding the vehicle to collide, the fuel pump damages and leads to the vehicle to take place the risk of catching fire because of the collision.

A vehicle according to an embodiment of the present invention includes a fuel pump as in any one of the above embodiments or an engine system as in any one of the above embodiments.

Drawings

Fig. 1 is a schematic structural view of a fuel pump according to an embodiment of the present invention.

Fig. 2 is a schematic diagram of an oil path of a fuel pump according to an embodiment of the present invention.

Reference numerals:

a pump body 1, a first oil passage 11, a second oil passage 12, a third oil passage 13, a fourth oil passage 14,

the pressure reducing valve 2, the first spool 21, the first elastic member 22, the pilot post 23,

the pressure regulating valve 3, the second elastic member 31, the second spool 32,

the pump comprises an injection component 4, a pump core 5 and an engine 6.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

As shown in fig. 1 and 2, the utility model discloses fuel pump, including the pump body 1 and relief pressure valve 2, have first oil circuit 11 and the second oil circuit 12 of mutual intercommunication in the pump body 1, first oil circuit 11 is suitable for and communicates with engine 6, and second oil circuit 12 is suitable for and links to each other with pump core 5, and relief pressure valve 2 establishes in the pump body 1, and the one end and the first oil circuit 11 intercommunication of relief pressure valve 2, the other end and the second oil circuit 12 intercommunication of relief pressure valve 2.

Specifically, as shown in fig. 1 and 2, an inlet and a first outlet are formed in the pump body 1, the inlet is communicated with the pump core 5, the first outlet is communicated with the engine 6, and a sealing ring is arranged outside the inlet of the pump body 1, so that fuel leakage at the joint of the pump body 1 and the pump core 5 is avoided. The inlet of the second oil path 12 is communicated with the first oil path 11, and the outlet of the second oil path 12 is connected with the injection component 4.

The embodiment of the utility model provides a fuel pump, through setting up the relief pressure valve, when the fuel pump standby, fuel pressure in the first oil circuit 11 is great, when fuel pressure in the low pressure oil circuit is great promptly, relief pressure valve 2 is opened, the fuel that has pressure is discharged by first oil circuit 11 through second oil circuit 12, can adjust the oil circuit trend, derive the pump body 1 with the pressure in the fuel pump, thereby unload the pressure in the fuel pump, the fuel pump inside pressure under the standby state has been reduced, when avoiding the vehicle to collide, the fuel pump damages and leads to the vehicle to take place the risk of catching fire because of the collision.

In some embodiments, the pressure reducing valve 2 is located at the connection of the first oil passage 11 and the second oil passage 12.

Specifically, as shown in fig. 1, the pressure reducing valve 2 is located at the intersection of the first oil passage 11 and the second oil passage 12, the opening of the pressure reducing valve 2 is directed toward the first oil passage 11, and the outlet of the pressure reducing valve 2 communicates with the second oil passage 12.

In some embodiments, the pressure reducing valve 2 includes a first valve core 21 and a first elastic member 22, the first elastic member 22 is sleeved on the first valve core 21, one end of the first elastic member 22 abuts against an inner wall surface of the pump body 1, and the other end of the first elastic member 22 abuts against the first valve core 21.

Specifically, as shown in fig. 1, the upper end of the first elastic member 22 is used for abutting against the inner wall surface of the pump body 1, the lower end of the first elastic member 22 abuts against the first valve element 21, the first elastic member 22 is compressed in the up-down direction, when the first elastic member 22 is compressed, the first valve element 21 moves upward, the pressure reducing valve 2 is opened, the fuel in the first oil passage 11 is discharged out of the pump body 1 through the second oil passage 12, and when the first elastic member 22 returns to the initial state, the first valve element 21 returns to the initial state, and the pressure reducing valve 2 is closed.

The utility model discloses the fuel pump, through setting up first elastic component 22 and first case 21, can control opening and closing of relief pressure valve 2, thereby decompress to first oil circuit 11, when fuel pressure in first oil circuit 11 is greater than the elastic resistance of first elastic component 22 promptly, first elastic component 22 is compressed under the effect of fuel pressure, then second oil circuit 12 is opened to first case 21, thereby decompress to first oil circuit 11, when fuel pressure in first oil circuit 11 is less than the elastic resistance of first elastic component 22, first elastic component 22 extends and makes first case 21 close second oil circuit 12.

In some embodiments, the pressure reducing valve 2 further includes a guide post 23, the guide post 23 is disposed on an inner wall surface of the pump body 1, the guide post 23 extends along a length direction of the first elastic member 22, the first elastic member 22 is sleeved on the guide post 23, and the first valve element 21 and the guide post 23 are spaced apart in the length direction of the first elastic member 22.

Specifically, as shown in fig. 1, the guide post 23 extends in the up-down direction, the first elastic element 22 is sleeved outside the guide post 23, and the guide post 23 and the first valve element 21 are arranged at an interval in the up-down direction.

The utility model discloses the fuel pump, through setting up guide post 23, not only can provide the direction to the compression of first elastic component 22, make the removal precision of first case 21 higher, still can carry on spacingly for the removal of first case 21, after the lower extreme of the upper end of first case 21 and guide post 23 contacts promptly, first case 21 can't remove, the aperture of relief pressure valve 2 reaches the maximum value, thereby avoid first case 21 to remove and excessively lead to first elastic component 22 can't kick-back, and then improve relief pressure valve 2's life.

In some embodiments, the fuel pump further includes a pressure regulating valve 3, the pump body 1 further includes a third oil path 13 therein, one end of the third oil path 13 is communicated with the first oil path 11, and the other end of the third oil path 13 is connected to the pressure regulating valve 3.

Specifically, as shown in fig. 2, the pump body 1 further has a second outlet, the second outlet is communicated with the pressure regulating valve 3, and the pressure relief pressure of the first oil path 11 can be adjusted by providing the pressure regulating valve 3, and the stability of the oil supply pressure of the first oil path 11 can be ensured.

In some embodiments, the pressure regulating valve 3 includes a second elastic member 31 and a second spool 32, one end of the second elastic member 31 abuts against an inner wall surface of the pump body 1, and the other end of the second elastic member 31 abuts against the second spool 32.

The utility model discloses fuel pump, through the elasticity of adjustment second elastic component 31, pressure release pressure to predetermined pressure in the adjustment first oil circuit 11 can also guarantee fuel pump fuel feeding pressure's stability through the size of adjusting 3 oil outlet of air-vent valve.

In some embodiments, the pressure reducing valve 2 is located at the junction of the first oil passage 11, the second oil passage 12, and the third oil passage 13.

Specifically, as shown in fig. 2, the pressure reducing valve 2 is located at the intersection of the first oil path 11, the second oil path 12 and the third oil path 13, so that not only the first oil path 11 but also the third oil path 13 can be depressurized, and the stability of the internal pressure of the fuel pump is ensured.

In some embodiments, the fuel pump further comprises an injection component 4, and the injection component 4 is connected with the second oil path 12.

Specifically, as shown in fig. 2, a third outlet is provided on the pump body 1, and the third outlet is communicated with the injection component 4.

For example, the injection component 4 may be an injection pump, an inlet of the injection pump is communicated with the third outlet, an outlet of the injection pump is communicated with the oil tank, and the fuel discharged from the second oil path 12 reenters the oil tank through the injection pump.

In some embodiments, the pump body 1 further includes a fourth oil path 14, one end of the fourth oil path 14 is communicated with the pump core 5, and the other end of the fourth oil path 14 is communicated with the ejector component 4.

Specifically, as shown in fig. 2, an inlet of the fourth oil passage 14 communicates with the pump core 5, and an outlet of the fourth oil passage 14 communicates with the ejector member 4.

The utility model discloses fuel pump through setting up fourth oil circuit 14, can with 5 exhaust unnecessary fuel of pump core 5 re-input pump core 5 in, not only can reduce the fuel extravagant, can also make and have sufficient fuel deposit in the pump core 5, guarantee that the fuel supplies with stably.

The operation of the fuel pump according to the embodiment of the present invention will be described with reference to fig. 1 and 2.

When fuel supply is needed, the engine is started, fuel in the oil storage barrel is pumped into the pump core 5 and enters the engine through the first oil path 11, and the engine is guaranteed to run.

When the vehicle runs in the pure electric mode, the engine does not need to work, the fuel pump stops running at the moment, when the fuel pressure in the first oil path 11 is larger than the elastic resistance of the first elastic piece 22, the first elastic piece 22 is compressed under the action of the fuel pressure, the first valve core 21 opens the second oil path 12, the pressure of the first oil path 11 is reduced, the pressure in the fuel pump is unloaded, and the pressure in the fuel pump is reduced in a standby state.

The utility model discloses an engine system, include: the fuel pump is the fuel pump of any one embodiment; an engine connected to the first oil passage.

The utility model discloses a vehicle of embodiment, including the fuel pump in the above-mentioned embodiment or the engine system in the above-mentioned embodiment.

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", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed 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, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, 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 meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. 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 present disclosure, the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like 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 present disclosure. 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.

Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

Claims

1. A fuel pump, comprising:

the pump comprises a pump body, a first oil path and a second oil path, wherein the pump body is internally provided with the first oil path and the second oil path which are communicated with each other;

the pressure reducing valve is arranged in the pump body, one end of the pressure reducing valve is communicated with the first oil way, and the other end of the pressure reducing valve is communicated with the second oil way.

2. The fuel pump of claim 1, wherein the pressure relief valve is located at a junction of the first oil passage and the second oil passage.

3. The fuel pump of claim 1, wherein the pressure reducing valve includes a first valve element and a first elastic member, the first elastic member is fitted over the first valve element, one end of the first elastic member abuts against an inner wall surface of the pump body, and the other end of the first elastic member abuts against the first valve element.

4. The fuel pump of claim 3, wherein the pressure reducing valve further includes a guide post provided on an inner wall surface of the pump body, the guide post extending in a longitudinal direction of the first elastic member, the first elastic member is fitted over the guide post, and the first valve element and the guide post are arranged at an interval in the longitudinal direction of the first elastic member.

5. The fuel pump of claim 1, further comprising a pressure regulating valve, and a third oil passage having one end communicating with the first oil passage and the other end connected to the pressure regulating valve is provided in the pump body.

6. The fuel pump of claim 5, wherein the pressure regulating valve includes a second elastic member and a second valve element, one end of the second elastic member abuts against an inner wall surface of the pump body, and the other end of the second elastic member abuts against the second valve element.

7. The fuel pump of claim 5, wherein the pressure relief valve is located at a junction of the first, second, and third oil passages.

8. The fuel pump of any of claims 1-7, further comprising an eductor part connected to the second oil passage.

9. The fuel pump of claim 8, further comprising a fourth oil passage in the pump body, one end of the fourth oil passage being in communication with the pump core, and the other end of the fourth oil passage being in communication with the injector element.

10. An engine system, comprising:

a fuel pump, the fuel pump being the fuel pump of any one of claims 1-9;

an engine connected to the first oil passage.

11. A vehicle comprising a fuel pump according to any one of claims 1 to 9 or an engine system according to claim 10.