CN111002820B

CN111002820B - Fuel oil system and automobile

Info

Publication number: CN111002820B
Application number: CN201911314065.2A
Authority: CN
Inventors: 贾艳伍; 王新超; 高玉龙
Original assignee: BAIC Group ORV Co ltd
Current assignee: BAIC Group ORV Co ltd
Priority date: 2019-12-19
Filing date: 2019-12-19
Publication date: 2021-04-09
Anticipated expiration: 2039-12-19
Also published as: CN111002820A

Abstract

The invention provides a fuel system and an automobile, wherein the fuel system comprises: a main fuel tank having a main fuel cavity; the cavity partition plate is arranged in the main fuel cavity to partition the main fuel cavity into a first cavity and a second cavity, and an oil passing gap communicated with the first cavity and the second cavity is reserved between the top of the cavity partition plate and the top of the main fuel tank; the first chamber is in communication with the engine; an oil inlet of the main fuel pump is communicated with the second cavity, and an oil outlet of the main fuel pump is communicated with the first cavity. The technical scheme of the invention is beneficial to improving the running stability of the vehicle when climbing and inclining.

Description

Fuel oil system and automobile

Technical Field

The invention relates to the technical field of automobiles, in particular to a fuel system and an automobile.

Background

At present, a large oil tank is communicated with an engine of an automobile, when fuel in the oil tank is less, and the automobile climbs a slope or inclines left and right, the oil in the oil tank is concentrated at one end or one side of the oil tank and often cannot be timely conveyed to the engine. The phenomenon of insufficient fuel oil of the engine can cause the phenomena of incapability of accelerating and the like of the automobile, and in severe cases, the automobile can be flamed out, so that the automobile is not favorable for use.

Disclosure of Invention

The embodiment of the invention provides a fuel system and an automobile, which are used for realizing barrier-free fuel supply for starting under the condition of insufficient fuel and ensuring the stable operation of an engine.

In a first aspect, an embodiment of the present invention provides a fuel system for an automobile, where the automobile includes an engine, and the fuel system includes:

a main fuel tank having a main fuel cavity;

the cavity partition plate is arranged in the main fuel cavity to partition the main fuel cavity into a first cavity and a second cavity, and an oil passing gap is reserved between the top of the cavity partition plate and the top of the main fuel tank;

the first chamber is in communication with the engine;

an oil inlet of the main fuel pump is communicated with the second cavity, and an oil outlet of the main fuel pump is communicated with the first cavity.

Optionally, an oil inlet cavity is formed in the top of the main oil tank, an oil filling pipe is arranged on the main oil tank, one end of the oil filling pipe is communicated with the outside, and the other end of the oil filling pipe is communicated with the oil inlet cavity;

the fuel system comprises a first fuel inlet pipe and a second fuel inlet pipe, the first fuel inlet pipe is communicated with the fuel inlet cavity and the first cavity, and the second fuel inlet pipe is communicated with the fuel inlet cavity and the second cavity.

Optionally, the fuel system includes a fuel pump control module and a first fuel level detection sensor for detecting a fuel level in the first chamber, the first fuel level detection sensor being electrically connected to the fuel pump control module, the main fuel pump being electrically connected to the fuel pump control module.

Optionally, an oil path of the first oil level detection sensor is communicated with an engine, an oil inlet of the first oil level detection sensor is located in the first chamber, and an oil return port of the first oil level detection sensor is communicated with the first chamber.

Optionally, the main fuel pump is located outside the main fuel tank, and the main fuel pump is communicated with the second chamber through a main fuel inlet pipe and communicated with the first chamber through a main fuel outlet pipe.

Optionally, the fuel system further comprises a secondary fuel tank and an oil pipe, and the secondary fuel tank is communicated with the second chamber through the oil pipe.

Optionally, the fuel system further comprises a secondary fuel pump, an oil inlet of the secondary fuel pump is communicated with the secondary fuel tank, and an oil outlet of the secondary fuel pump is communicated with the first chamber.

Optionally, the secondary fuel pump is located outside the secondary fuel tank, and the secondary fuel pump is communicated with the secondary fuel tank through a secondary fuel inlet pipe and communicated with the first cavity through a secondary fuel outlet pipe.

Optionally, the secondary fuel pump is electrically connected to a first fuel level detection sensor and/or a fuel pump control module of the fuel system.

Optionally, the fuel system includes an exhaust pipe, one end of the exhaust pipe is communicated with the auxiliary fuel tank, and the other end of the exhaust pipe is communicated with the first chamber.

Optionally, an auxiliary oil level detection sensor for detecting the oil level in the auxiliary oil tank is arranged in the auxiliary oil tank; and/or the presence of a catalyst in the reaction mixture,

and a main oil level detection sensor is arranged in the second chamber.

Optionally, a main noise reduction partition plate is arranged in the second chamber, and a plurality of oil passing holes are formed in the main noise reduction partition plate; and/or the presence of a catalyst in the reaction mixture,

an auxiliary noise reduction clapboard is arranged in the auxiliary oil tank, and a plurality of oil passing holes are formed in the auxiliary noise reduction clapboard; and/or the presence of a catalyst in the reaction mixture,

a top shock pad is arranged at the top of the main oil tank and/or the auxiliary oil tank; and/or the presence of a catalyst in the reaction mixture,

a bottom damping pad is arranged at the bottom of the main oil tank and/or the auxiliary oil tank; and/or the presence of a catalyst in the reaction mixture,

the side part of the main oil tank and/or the auxiliary oil tank is/are provided with a side damping pad; and/or the presence of a catalyst in the reaction mixture,

and the end part of the main oil tank and/or the auxiliary oil tank is/are provided with an end part vibration damping fixing structure so as to fix the oil tank.

In a second aspect, an embodiment of the present invention further provides an automobile, which includes an automobile body and the foregoing fuel system, where the fuel system is installed on the automobile body.

According to the technical scheme, the main oil tank is divided into the first cavity and the second cavity, and the fuel quantity in the first cavity for directly supplying oil to the engine is ensured through the oil passing gap and the main fuel pump, so that even under the condition that the total fuel quantity in the main oil tank is small, the first cavity still can keep a high oil level, and therefore when the automobile climbs a slope or inclines leftwards and rightwards, the fuel in the first cavity can still be timely conveyed to the engine, the oil consumption of the engine is ensured, the automobile can stably run, and the use of the automobile is facilitated.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive exercise.

FIG. 1 is a schematic structural diagram of an embodiment of a fuel system of the present invention;

FIG. 2 is a schematic view of the structure of FIG. 1 from another perspective;

FIG. 3 is a schematic view of the internal structure of the main fuel tank of the fuel system of the present invention;

FIG. 4 is a schematic view of the internal structure of a secondary fuel tank of the fuel system of the present invention;

fig. 5 is a schematic view of the structure at the bottom of fig. 1.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the present application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships are changed accordingly.

Referring to fig. 1, fig. 1 is a schematic structural diagram of an embodiment of a fuel system of the present invention, please refer to fig. 2 to 4 at the same time.

In this embodiment, the oil supply system is used for an automobile including a vehicle body and an oil supply system mounted on the vehicle body. In the present embodiment, the vehicle may be a heavy vehicle, a lightning protection reverse locomotive, or a normal light car.

In this embodiment, the oil supply system includes:

a main fuel tank 100, said main fuel tank 100 having a main fuel cavity;

a chamber partition 130, wherein the chamber partition 130 is disposed in the main fuel cavity to partition the main fuel cavity into a first chamber 110 and a second chamber 120, and an oil passing gap is reserved between the top of the chamber partition 130 and the top of the main fuel tank 100;

the first chamber 110 is in communication with the engine;

a main fuel pump 500, an oil inlet of the main fuel pump 500 being in communication with the second chamber 120, and an oil outlet of the main fuel pump 500 being in communication with the first chamber 110.

Specifically, in the present embodiment, the main fuel cavity of the main fuel tank 100 has a larger space, so as to hold more fuel. The first and

second chambers

110, 120 defined by the chamber divider 130 dividing the main fuel chamber may or may not be the same size. The space of the first chamber 110 may be larger than the second chamber 120, or may be smaller than the second chamber 120, for example, the space of the first chamber 110 is smaller than the space of the second chamber 120. The oil inlet of the main oil tank 100 may be communicated with the first cavity 110 and the second cavity 120, and in order to preferentially ensure that oil is supplied to the first cavity 110, the oil inlet of the main oil tank 100 is communicated with the first cavity 110, so that the fuel oil loss can be reduced under the condition that the fuel oil amount is limited. Specifically, the main oil tank 100 is provided with an oil filling pipe 160, and one end of the oil filling pipe 160 is communicated with the outside and the other end is communicated with the first chamber 110. The end of the filler tube 160 away from the main fuel tank 100 is used for external refueling, and a fuel cap assembly 161 is disposed thereon, such that when refueling is not required, the fuel cap assembly 161 seals the end of the filler tube 160 away from the main fuel tank 100.

During the refueling process, fuel is firstly injected into the first chamber 110, when the height of the fuel exceeds the chamber partition 130, the fuel flows into the second chamber 120 through the oil passing gap until the fuel in the first chamber 110 and the second chamber 120 is higher than the top of the chamber partition, and finally the main fuel tank 100 (the oil passing gap) is filled.

It should be noted that, in some embodiments, in order to improve the efficiency of refueling, the top of the main fuel tank 100 is provided with an oil inlet cavity 170, the main fuel tank 100 is provided with a refueling pipe 160, one end of the refueling pipe 160 is communicated with the outside, and the other end is communicated with the oil inlet cavity 170; the fuel system includes a first oil inlet pipe 111 and a second oil inlet pipe 121, the first oil inlet pipe 111 communicates the oil inlet chamber 170 with the first chamber 110, and the second oil inlet pipe 121 communicates the oil inlet chamber 170 with the second chamber 120. That is, an oil inlet chamber 170 is formed at the top of the first and

second chambers

110 and 120, and the oil inlet chamber 170 may cross the top of the first and

second chambers

110 and 120. So set up for first cavity 110 and second cavity 120 can refuel simultaneously through first oil feed pipe 111 and second oil feed pipe 121 respectively, the efficiency of refueling has been improved by a wide margin.

During the consumption of the fuel, the fuel in the first chamber 110 is directly supplied to the engine, and when the fuel in the first chamber 110 is lower than the oil passing gap, the fuel in the second chamber 120 higher than the top of the chamber partition 130 flows into the first chamber 110 through the oil passing gap for oil supplement. When the oil level in both the first chamber 110 and the second chamber 120 is below the oil clearance, fuel can be delivered from the second chamber 120 to the first chamber 110 for use by the engine by operation of the primary fuel pump 500. As to the timing of the main fuel pump 500, there may be many, for example, when the fuel amount in the first chamber 110 is less than 1/3-1/5 of the total volume, such as when the fuel amount in the first chamber 110 is less than 1/4 of the total volume.

In this embodiment, the main oil tank 100 is separated to form the first chamber 110 and the second chamber 120, and the fuel amount in the first chamber 110 for directly supplying oil to the engine is ensured by the oil passing gap and the arrangement of the main fuel pump 500, so that even under the condition that the total oil amount in the main oil tank 100 is small, a high oil level can still be kept in the first chamber 110, and therefore when the automobile climbs a slope or inclines leftwards and rightwards, the fuel in the first chamber 110 can still be timely conveyed to the engine, so that the oil consumption of the engine is ensured, the stable operation of the automobile is ensured, and the use of the automobile is facilitated.

In some embodiments, to more accurately and timely deliver fuel from the second chamber 120 to the first chamber 110, the fuel system includes a fuel pump control module 150 and a first fuel level detection sensor 140 for detecting the fuel level in the first chamber 110, the first fuel level detection sensor 140 being electrically connected to the fuel pump control module 150, and the main fuel pump 500 being electrically connected to the fuel pump control module 150.

The first fuel level detecting sensor 140 may be in many forms as long as it can detect the fuel level in the first tank. The triggering of the operation of the primary fuel pump 500 may be the first fuel level detecting sensor 140, that is, the primary fuel pump 500 is electrically connected to the first fuel level detecting sensor 140, and when the fuel level detected by the first fuel level detecting sensor 140 is low, the primary fuel pump 500 operates; the operation of the main fuel pump 500 may also be controlled by the fuel pump control module 150, and the fuel pump control module 150 receives the fuel level detected by the first fuel level detecting sensor 140 and controls whether the main fuel pump 500 operates or not according to the fuel level value.

In some embodiments, regarding the first oil level detection sensor 140, the first oil level detection sensor 140 has an oil passage, the oil passage communicates with the engine, the oil inlet of the first oil level detection sensor 140 is located in the first chamber 110, and the oil return of the first oil level detection sensor 140 communicates with the first chamber 110. The fuel enters the engine through the oil passage of the first fuel level detection sensor 140, and the fuel remaining after combustion in the engine is returned to the first chamber 110 through the oil return port of the first fuel level detection sensor 140. To effect recirculation of fuel between the first chamber 110 and the engine.

In some embodiments, in order to improve the compactness of the structure and the capacity of the main fuel tank 100, the main fuel pump 500 is located outside the main fuel tank 100, and the main fuel pump 500 is communicated with the second chamber 120 through a main oil inlet pipe 510 and communicated with the first chamber 110 through a main oil outlet pipe 520. The main fuel pump 500 is fixedly coupled to an outer sidewall of one end of the main fuel tank 100, and when the main fuel pump 500 operates, fuel enters the fuel pump from the second chamber 120 through the main fuel inlet pipe 510 and then flows into the first chamber 110 through the main fuel outlet pipe 520. So, main fuel pump 500 sets up in the outside of main oil tank 100, does not occupy the inside space of main oil tank 100 to be favorable to improving the oil capacity of main oil tank 100, simultaneously, make the installation of main fuel pump 500 be fixed with great operating space, be favorable to the installation and the dismantlement of main fuel pump 500.

In some embodiments, in order to increase the fuel capacity and improve the endurance of the vehicle, the fuel system further includes a secondary fuel tank 200 and a communication pipe 300, and the secondary fuel tank 200 is communicated with the second chamber 120 through the communication pipe 300. During refueling, after entering the second chamber 120 through the oil gap, the fuel can enter the secondary fuel tank 200 through the oil pipe 300. During consumption of the fuel, the fuel may be returned to the second chamber 120 through a pipe and then into the first chamber 110; the oil passage may be provided to the first chamber 110 through another oil passage, and the oil passage may be in communication with the second chamber 120, the primary fuel pump 500, the primary fuel inlet pipe 510, and the primary fuel outlet pipe 520 (in indirect communication with the first chamber 110), or may be in direct communication with the first chamber 110.

In order to ensure that the fuel can smoothly enter the auxiliary fuel tank 200 from the second chamber 120 through the oil pipe 300, the fuel system includes an exhaust pipe 310, wherein one end of the exhaust pipe 310 is communicated with the auxiliary fuel tank 200, and the other end is communicated with the first chamber 110. The upper portion intercommunication of blast pipe 310 and bellytank 200, at the refueling in-process, the air in the bellytank 200 enters into first cavity 110 through blast pipe 310, and the rethread adds the oil pipe 160 discharge oil tank for main oil tank 100, bellytank 200 can be simultaneously smooth refuel, are favorable to improving the efficiency of refueling.

In some embodiments, in order to make more convenient and efficient use of the fuel in the secondary fuel tank 200, the fuel system further includes a secondary fuel pump 250, an oil inlet of the secondary fuel pump 250 is communicated with the secondary fuel tank 200, and an oil outlet of the secondary fuel pump 250 is communicated with the first chamber 110. The sub fuel pump 250 is located outside the sub fuel tank 200, and the sub fuel pump 250 communicates with the sub fuel tank 200 through a sub oil inlet pipe 220 and communicates with the first chamber 110 through a sub oil outlet pipe 260.

The sub fuel pump 250 is fixedly connected to an outer sidewall of one end of the sub fuel tank 200, and when the sub fuel pump 250 operates, fuel enters the sub fuel pump 250 from the sub fuel tank 200 through the sub fuel inlet pipe 220 and then flows into the first chamber 110 through the sub fuel outlet pipe 260. So, the secondary fuel pump 250 sets up in the outside of bellytank 200, does not occupy the inside space of bellytank 200 to be favorable to improving bellytank 200's the oil capacity, simultaneously, make the installation of secondary fuel pump 250 be fixed with great operating space, be favorable to the installation and the dismantlement of secondary fuel pump 250. It should be noted that, in some embodiments, in order to make the sub oil inlet pipe 220 suck as much fuel in the sub oil tank 200 as possible, the oil outlet pipe 210 of the sub oil tank 200 is also provided in the sub oil tank 200, and one end of the oil outlet pipe 210 of the sub oil tank 200 is communicated with the sub oil inlet pipe 220, and the other end extends to the bottom of the sub oil tank 200.

Based on the above embodiment, the secondary fuel pump 250 is electrically connected to the first fuel level detection sensor 140 and/or the fuel pump control module 150 of the fuel system. The triggering of the operation of the sub-fuel pump 250 may be that the first fuel level detection sensor 140, that is, the sub-fuel pump 250 is electrically connected to the first fuel level detection sensor 140, and when the fuel level detected by the first fuel level detection sensor 140 is low, the sub-fuel pump 250 operates; the operation of the secondary fuel pump 250 may also be controlled by the fuel pump control module 150, and the fuel pump control module 150 receives the fuel level detected by the first fuel level detecting sensor 140 and controls the operation or non-operation of the secondary fuel pump 250 according to the fuel level value. It should be noted that, when the control of the primary fuel pump 500 and the secondary fuel pump 250 is controlled by the fuel pump control module 150, the fuel supply can be coordinated with each other, so that the oil level in the first chamber 110 is accurately maintained, which is beneficial to improving the control accuracy.

In some embodiments, in order to timely acquire the oil level in the second chamber 120 and the secondary oil tank 200, a secondary oil level detection sensor 240 for detecting the oil level in the secondary oil tank 200 is disposed in the secondary oil tank 200; and/or, a main oil level detection sensor 122 is disposed in the second chamber 120. The oil level in the second chamber 120 can be timely detected by the setting of the main oil level detection sensor 122, and the oil level in the sub-tank 200 can be timely detected by the setting of the sub-oil level detection sensor 240. In some embodiments, if the main oil level detection sensor 122 and/or the auxiliary oil level detection sensor 240 are connected to a meter or a display screen, the oil level in the second chamber 120 and/or the auxiliary oil tank 200 can be displayed in time.

In some embodiments, in order to reduce the vibration of the oil tank and reduce the noise, a main noise reduction partition plate is disposed in the second chamber 120, and a plurality of oil passing holes are formed in the main noise reduction partition plate; and/or an auxiliary noise reduction clapboard is arranged in the auxiliary oil tank 200, and a plurality of oil passing holes are formed in the auxiliary noise reduction clapboard; and/or a top shock pad 610 is arranged on the top of the main oil tank 100 and/or the auxiliary oil tank 200; and/or, a bottom shock pad 630 is arranged at the bottom of the main oil tank 100 and/or the auxiliary oil tank 200; and/or, a side shock pad 620 is arranged on the side part of the main oil tank 100 and/or the auxiliary oil tank 200; and/or, the end part of the main oil tank 100 and/or the auxiliary oil tank 200 is provided with an end part vibration damping fixing structure 640 to fix the oil tank.

Specifically, in the present embodiment, due to the arrangement of the main partition 123 and the sub-partition 230, the fuel sloshing in the second chamber 120 and the sub-tank 200 is hindered, and the vibration is reduced, and at the same time, the sloshing noise of the main tank 100, the oil passing through the pipes and the sub-tank 200 is isolated.

The top of the main fuel tank 100 is provided with a plurality of top shock-absorbing pads 610 so that a gap between the top of the main fuel tank 100 and the upper cover of the vehicle frame is filled, thereby absorbing and dissipating vibration and noise generated by the vibration while restraining and damping the vibration of the main fuel tank 100. Similarly, the top of the secondary fuel tank 200 is also provided with a plurality of top shock-absorbing pads 610, so that the gap between the top of the secondary fuel tank 200 and the upper cover of the vehicle frame is filled, and vibration and noise generated by the vibration are absorbed and consumed while vibration of the secondary fuel tank 200 is limited and buffered.

The side of the main fuel tank 100 is provided with a plurality of side shock-absorbing pads 620 so that the gap between the side of the main fuel tank 100 and the side plate of the tunnel in the vehicle frame is filled, thereby absorbing and dissipating vibration and noise generated by the vibration while restraining and damping the vibration of the main fuel tank 100. Similarly, the side of the secondary fuel tank 200 is also provided with a plurality of side shock-absorbing pads 620, so that the gap between the side of the secondary fuel tank 200 and the side plate of the channel in the vehicle frame is filled up, and the vibration of the secondary fuel tank 200 is restricted and buffered while the vibration and the noise generated by the vibration are absorbed and consumed.

The bottom of the main tank 100 is provided with a plurality of bottom shock-absorbing pads 630 so that a gap between the bottom of the main tank 100 and a bottom side plate of the frame is filled, thereby absorbing and consuming vibration and noise generated by the vibration while restraining and buffering the vibration of the main tank 100. Similarly, the bottom of the secondary fuel tank 200 is also provided with a plurality of bottom shock-absorbing pads 630, so that the gap between the bottom of the secondary fuel tank 200 and the chassis base is filled up, and the vibration of the secondary fuel tank 200 is limited and buffered, and simultaneously the vibration and the noise generated by the vibration are absorbed and consumed.

The limit of the end part of the main oil tank 100 in the length direction is realized by a damping and fixing structure at the end part of the main oil tank 100, and simultaneously, the damping and the noise reduction are realized by utilizing the contact of structural rubber and the vertical surface of the frame; in a similar way, the limiting of the end part of the length direction of the auxiliary oil tank 200 is realized through the damping and fixing structure at the end part of the auxiliary oil tank 200, and the damping and the noise reduction are realized by utilizing the structural rubber to contact with the vertical surface of the frame.

In this embodiment, the arrangement of the main partition plate 123, the auxiliary partition plate 230, the top shock pad 610, the side shock pads 620, the bottom shock pads 630 and the end part shock-absorbing fixing structures 640 can reduce the noise and vibration in all directions and inside of the oil tank comprehensively, thereby being beneficial to greatly reducing the noise.

The invention further provides an automobile which comprises an automobile body and an oil supply system, the specific structure of the oil supply system refers to the embodiments, and the automobile adopts all the technical schemes of all the embodiments, so that the automobile at least has all the beneficial effects brought by the technical schemes of the embodiments, and the details are not repeated. Wherein, oil feeding system sets up on the automobile body.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A fuel system for a vehicle, the vehicle including an engine, the fuel system comprising:

a main fuel tank having a main fuel cavity;

the cavity partition plate is arranged in the main fuel cavity to partition the main fuel cavity into a first cavity and a second cavity, and an oil passing gap communicated with the first cavity and the second cavity is reserved between the top of the cavity partition plate and the top of the main fuel tank; the first chamber is in communication with the engine;

the main fuel pump is positioned outside the main fuel tank, an oil inlet of the main fuel pump is communicated with the second cavity, and an oil outlet of the main fuel pump is communicated with the first cavity;

the top of the main oil tank is provided with an oil inlet cavity, the main oil tank is provided with an oil filling pipe, one end of the oil filling pipe is communicated with the outside, and the other end of the oil filling pipe is communicated with the oil inlet cavity;

2. The fuel system as recited in claim 1, including a fuel pump control module and a first fuel level detection sensor for detecting a fuel level in the first chamber, said first fuel level detection sensor being electrically connected to said fuel pump control module, said main fuel pump being electrically connected to said fuel pump control module.

3. The fuel system as recited in claim 2, wherein the oil passage of the first fuel level detection sensor is in communication with the engine, the oil inlet of the first fuel level detection sensor is located in the first chamber, and the oil return of the first fuel level detection sensor is in communication with the first chamber.

4. The fuel system as recited in claim 1, wherein said primary fuel pump communicates with said second chamber through a primary fuel inlet pipe and communicates with said first chamber through a primary fuel outlet pipe.

5. A fuel system as claimed in any one of claims 1 to 4, characterized in that the fuel system further comprises a secondary fuel tank and a fuel conduit, the secondary fuel tank being in communication with the second chamber via the fuel conduit.

6. The fuel system as recited in claim 5, further comprising a secondary fuel pump having an inlet in communication with said secondary fuel tank and an outlet in communication with said first chamber.

7. The fuel system as recited in claim 6, wherein said secondary fuel pump is located outside of said secondary fuel tank, said secondary fuel pump communicating with said secondary fuel tank through a secondary fuel inlet pipe and communicating with said first chamber through a secondary fuel outlet pipe.

8. The fuel system as recited in claim 6, wherein said secondary fuel pump is electrically connected to a first fuel level detection sensor and/or a fuel pump control module of the fuel system.

9. The fuel system as recited in claim 5, including an exhaust pipe having one end communicating with said secondary fuel tank and the other end communicating with said first chamber.

10. The fuel system as recited in claim 5, wherein a sub-tank level detection sensor is provided in said sub-tank for detecting a level of fuel in said sub-tank; and/or the presence of a catalyst in the reaction mixture,

and a main oil level detection sensor is arranged in the second chamber.

11. The fuel system as recited in claim 5, wherein a main noise reduction partition is disposed in said second chamber, and a plurality of oil passing holes are formed in said main noise reduction partition; and/or the presence of a catalyst in the reaction mixture,

12. An automobile, characterized by comprising a vehicle body and a fuel system according to any one of claims 1 to 11, the fuel system being provided on the vehicle body.