Fuel supply system and vehicle

Abstract

The utility model discloses a fuel oil supply system and a vehicle, and relates to the technical field of vehicles, the fuel oil supply system comprises a plurality of engines, a fuel oil tank, a carbon tank, an oil supply pipeline, an evaporation pipeline and a steam pipeline; the oil supply pipeline comprises a plurality of oil supply branches, and an oil supply port of the fuel tank is connected with an oil inlet of one engine through one oil supply branch; an evaporation opening of the fuel tank is connected with an inlet of the carbon tank through the evaporation pipeline; the steam pipeline comprises a plurality of steam branches, and a steam inlet of one engine is connected with an outlet of the carbon tank through one steam branch. According to the technical scheme provided by the utility model, fuel supply and carbon tank desorption of a vehicle with a plurality of engines are met.

Description

TECHNICAL FIELD

[0001] The utility model relates to vehicle technical field, especially a kind of fuel supply system and vehicle. BACKGROUND

[0002] In conventional vehicle, only one engine exists, and the fuel supply system is used to supply fuel for the vehicle and carry out carbon canister desorption.

[0003] In the design of conventional automobile fuel supply system, fuel is stored in fuel tank, fuel pump is controlled by an engine controller, fuel is discharged from fuel pump, reaches pressure regulating valve and filter through fuel supply pipe, fuel is regulated in pressure by pressure regulating valve and filtered in impurity by filter, and then fuel reaches engine through fuel supply nylon pipe. At the same time, carbon canister solenoid valve is controlled by an engine controller to carry out desorption on carbon canister.

[0004] However, the above fuel supply system cannot meet the fuel supply and carbon canister desorption of vehicle with multiple engines. UTILITY MODEL CONTENTS

[0005] The main purpose of the utility model is to provide a kind of fuel supply system and vehicle, to meet the fuel supply and carbon canister desorption of vehicle with multiple engines.

[0006] To achieve the above purpose, the fuel supply system provided by the utility model comprises: multiple engines, fuel tank, carbon canister, fuel supply pipeline, evaporation pipeline and steam pipeline.

[0007] The fuel supply pipeline comprises multiple fuel supply branches, and the fuel outlet of the fuel tank is connected with the oil inlet of one of the engines through one of the fuel supply branches.

[0008] The evaporation outlet of the fuel tank is connected with the inlet of the carbon canister through the evaporation pipeline.

[0009] The steam pipeline comprises multiple steam branches, and the steam inlet of one of the engines is connected with the outlet of the carbon canister through one of the steam branches.

[0010] In an embodiment, the steam pipeline further comprises steam main road, one end of the steam main road is connected with the outlet of the carbon canister, and the other end is respectively communicated with multiple steam branches.

[0011] In an embodiment, the fuel supply system further comprises multiple superchargers, one end of one of the superchargers is connected with one of the engines, and the other end is communicated with the outside world.

[0012] The steam branch is formed with parallel first branch and second branch at the end away from the steam main road, and the first branch and the second branch are respectively communicated with the engine.

[0013] In an embodiment, the fuel supply system further comprises a carbon canister electromagnetic valve, which is arranged on the vapor pipeline.

[0014] In an embodiment, the number of the carbon canister electromagnetic valves is equal to the number of the engines, and one of the carbon canister electromagnetic valves is arranged on one of the vapor branches;

[0015] A jet valve is further arranged on the vapor branch, and the jet valve is arranged on the side of the carbon canister electromagnetic valve close to the engine.

[0016] When the supercharger is not working, fuel vapor flows into the engine through the carbon canister, the vapor main pipeline, the vapor branch, the carbon canister electromagnetic valve, the jet valve and the first branch in sequence.

[0017] When the supercharger is working, fuel vapor flows into the engine through the carbon canister, the vapor main pipeline, the vapor branch, the carbon canister electromagnetic valve, the jet valve and the second branch in sequence.

[0018] In an embodiment, the vapor pipeline further comprises a common pipeline, and the plurality of vapor branches are connected to the common pipeline at the end away from the carbon canister, the common pipeline is formed with a plurality of branch pipelines at the end away from the carbon canister, and one of the branch pipelines is used for connecting to one of the engines; a one-way valve is arranged on the branch pipeline, and the one-way valve is used for limiting the flow of fuel vapor from one of the branch pipelines to another of the branch pipelines.

[0019] In an embodiment, the number of the carbon canister electromagnetic valves is equal to the number of the engines.

[0020] Alternatively, the number of the carbon canister electromagnetic valves is less than the number of the engines, and at least one of the carbon canister electromagnetic valves is connected to a plurality of the engines through a multi-way valve.

[0021] In an embodiment, the fuel supply pipeline further comprises a fuel supply main pipeline, one end of the fuel supply main pipeline is connected to the fuel tank, and the other end is respectively communicated with a plurality of fuel supply branches.

[0022] In an embodiment, the fuel supply system further comprises a fuel pump, and the fuel pump is arranged in the fuel tank.

[0023] In an embodiment, a plurality of fuel pumps are arranged, and one of the fuel pumps is connected to one of the engines.

[0024] The utility model further provides a vehicle, the vehicle comprises the fuel supply system.

[0025] This invention provides a fuel supply system comprising multiple engines, a fuel tank, a carbon canister, fuel supply lines, an evaporation line, and a steam line. The evaporation port of the fuel tank is connected to the inlet of the carbon canister via the evaporation line. The fuel supply lines include multiple fuel supply branches, with the fuel tank's fuel inlet connected to the fuel inlet of one engine via one of these branches. The steam line includes multiple steam branches, with the steam inlet of one engine connected to the outlet of the carbon canister via one of these branches. By providing multiple fuel supply branches and connecting each branch to an engine, fuel canisters can be supplied to multiple engines. Similarly, by providing multiple steam branches and connecting each branch to an engine, the carbon canisters can be connected to each engine. This ensures fuel supply to each engine in a multi-engine vehicle and also guarantees the desorption of carbon from the carbon canister by the multiple engines under different operating modes. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0027] Figure 1 A schematic diagram of a steam pipeline in a fuel supply system provided by this utility model;

[0028] Figure 2 A schematic diagram of another embodiment of the steam pipeline in a fuel supply system;

[0029] Figure 3 A schematic diagram of an embodiment of a steam pipeline in a fuel supply system;

[0030] Figure 4 for Figure 3 A schematic diagram of an embodiment of the jet valve in the diagram;

[0031] Figure 5 This is a schematic diagram of an embodiment of a fuel supply pipeline in a fuel supply system.

[0032] Explanation of icon numbers:

[0033] 100. Fuel tank; 200. Carbon canister; 300. Fuel supply line; 310. Fuel supply branch line; 320. Fuel supply main line;

[0034] 400, steam line; 410, steam branch; 411, first branch; 412, second branch; 420, steam main; 430, common line; 440, branch line;

[0035] 510, engine; 520, supercharger; 600, carbon canister solenoid valve;

[0036] 700, fluidic valve; 711, first opening; 712, second opening; 713, third opening; 721, first flow channel; 722, second flow channel; 723, third flow channel; 724, fourth flow channel; 731, first one-way valve; 732, second one-way valve;

[0037] 800, fuel pump; 900, filter.

[0038] The implementation, functional features and advantages of the utility model will be further described in combination with embodiments and with reference to the drawings. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the utility model will be clearly and completely described in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0040] It should be noted that if the embodiments of the utility model involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement condition, etc. between components in a certain posture, and if the certain posture changes, the directional indications also change accordingly.

[0041] In addition, if the embodiments of the utility model involve descriptions such as "first", "second", etc., the descriptions of "first", "second", etc. are only for description purposes, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include at least one feature. In addition, "and / or" or "and / or" appearing throughout the text means that the three parallel schemes are included, taking "A and / or B" as an example, including A scheme, or B scheme, or A and B simultaneously meet the scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the utility model.

[0042] In a conventional vehicle, there is only one engine, and a fuel supply system is used to supply fuel to the vehicle and to perform carbon canister desorption. It can be understood that the fuel in the fuel tank of the vehicle will evaporate to generate fuel vapor. In order to avoid the fuel vapor being directly discharged into the air to pollute the environment, a carbon canister is provided in the fuel supply system, and the carbon canister is used to adsorb the fuel vapor. When the vehicle is working, the air in the atmosphere will enter the carbon canister under the action of negative pressure in the intake manifold of the engine, and flush the desorbed carbon canister to restore the adsorption capacity of the activated carbon in the carbon canister; the desorbed fuel vapor is sucked into the engine for combustion.

[0043] In a conventional automobile fuel supply system design, fuel is stored in a fuel tank, a fuel pump is controlled by an engine controller, fuel is discharged from the fuel pump, and reaches a pressure regulating valve and a filter through a fuel supply pipe. After the fuel is regulated in pressure by the pressure regulating valve and filtered by the filter, the fuel reaches the engine through a fuel supply nylon pipe. At the same time, a carbon canister electromagnetic valve is provided on the pipeline between the carbon canister and the engine, and the carbon canister electromagnetic valve is controlled by an engine controller to perform desorption on the carbon canister.

[0044] However, the above-mentioned fuel supply system cannot meet the fuel supply and carbon canister desorption of vehicles with multiple engines.

[0045] The utility model provides a kind of fuel supply system.

[0046] Please refer to Figures 1 to 5 In an embodiment of the utility model, the fuel supply system includes multiple engines 510 (see Figure 3 ), fuel tank 100, carbon canister 200, fuel supply pipeline 300, evaporation pipeline (not shown) and vapor pipeline 400. It can be understood that multiple power sources are provided in some vehicles to realize multiple working modes of the vehicle. The vehicle proposed by the utility model has at least two engines 510 to meet different working conditions.

[0047] Please refer to Figure 5 Fuel supply pipeline 300 includes multiple fuel supply branches 310, and the fuel outlet of fuel tank 100 is connected with the oil inlet of an engine 510 through a fuel supply branch 310. It can be understood that the number of fuel supply branches 310 is consistent with the number of engines 510, and one fuel supply branch 310 is connected with one engine 510, so as to supply the fuel in fuel tank 100 to each engine 510 to provide fuel for each engine 510. In this way, multiple fuel supply branches 310 are provided in the fuel supply system to ensure the fuel supply of each engine 510. It can be understood that the fuel in fuel tank 100 can be methanol, gasoline, etc., which is not limited here.

[0048] The evaporation port of the fuel tank 100 is connected with the inlet of the carbon canister 200 through an evaporation pipeline (not shown). It can be understood that, in addition to the oil supply port, the fuel tank 100 is also provided with an evaporation port. One end of the vapor pipeline 400 is connected with the evaporation port, and the other end is connected with the inlet of the carbon canister 200, so as to guide the fuel vapor in the fuel tank 100 into the carbon canister 200, so as to be adsorbed by the activated carbon in the carbon canister 200, thereby avoiding direct emission of fuel vapor.

[0049] Please refer to Figure 1 and Figure 2 The vapor pipeline 400 includes a plurality of vapor branches 410, and the vapor inlet of an engine 510 is connected with the outlet of the carbon canister 200 through a vapor branch 410. It can be understood that, in addition to the oil inlet, the engine 510 is also provided with a vapor inlet. The vapor pipeline 400 includes a plurality of vapor branches 410, and the number of the vapor branches 410 is consistent with the number of the engines 510, and one vapor branch 410 is connected with one engine 510. It can be understood that, under different working conditions, the working conditions of the plurality of engines 510 in the vehicle are different, and one of the engines 510 may work, or a plurality of engines 510 may work. In this way, by arranging a plurality of vapor branches 410 in the fuel supply system, it is ensured that the carbon canister 200 can be connected with each engine 510, so that the carbon canister 200 can realize desorption under different working modes. Compared with the case that the carbon canister 200 can only be connected with one of the engines 510, and the carbon canister 200 can only realize desorption when the engine 510 works, the present application arranges a plurality of vapor branches 410, so that the carbon canister 200 can realize timely desorption, thereby avoiding accumulation of fuel vapor in the carbon canister 200, and avoiding escape of fuel vapor caused by the carbon canister 200 being in a saturated state and temporarily unable to adsorb fuel vapor.

[0050] The technical scheme of the utility model discloses a plurality of engines 510, fuel tank 100, carbon tank 200, oil supply pipeline 300, evaporation pipeline and steam pipeline 400 are arranged in the fuel supply system, wherein the evaporation port of fuel tank 100 is connected with the inlet of carbon tank 200 through evaporation pipeline, oil supply pipeline 300 includes a plurality of oil supply branch 310, the oil supply port of fuel tank 100 is connected with the oil inlet of an engine 510 through an oil supply branch 310, steam pipeline 400 includes a plurality of steam branch 410, the steam inlet of an engine 510 is connected with the outlet of carbon tank 200 through a steam branch 410, in this way, a plurality of oil supply branches 310 are arranged in the fuel supply system, and an oil supply branch 310 is connected with an engine 510, thereby realizing fuel supply for a plurality of engines 510, a plurality of steam branches 410 are arranged in the fuel supply system, and a steam branch 410 is connected with an engine 510, thereby realizing the connection between carbon tank 200 and each engine 510, in this way, the fuel supply for each engine 510 in the vehicle with a plurality of engines 510 is ensured, and the desorption of carbon tank 200 in different working modes of a plurality of engines 510 is also ensured.

[0051] Please refer to Figure 1 and Figure 2 In the embodiment of the utility model, steam pipeline 400 also includes steam main road 420, one end of steam main road 420 is connected with the outlet of carbon tank 200, and the other end is communicated with a plurality of steam branches 410 respectively, in this way, by arranging steam main road 420, only one steam inlet can be arranged on carbon tank 200, thereby being favorable to the sealing property of carbon tank 200 and also being favorable to the simplification of steam pipeline 400.

[0052] Please refer to Figures 1 to 3 In the embodiment of the utility model, the fuel supply system also includes a plurality of superchargers 520, one end of a supercharger 520 is connected with an engine 510, and the other end is communicated with the outside, steam branch 410 is formed with parallel first branch 411 and second branch 412 at the end far from steam main road 420, and first branch 411 and second branch 412 are respectively communicated with engine 510.

[0053] Specifically, the setting of the superchargers 520 can improve the performance of the engines 510, and in an embodiment, the superchargers 520 are turbochargers 520. In the present application, the number of the superchargers 520 is the same as the number of the engines 510, and one supercharger 520 is connected to one engine 510. It can be understood that when the vehicle is working, the air in the atmosphere will enter the carbon canister 200 under the action of the negative pressure in the intake manifold of the engine 510, and flush the desorbed carbon canister 200, so that the activated carbon in the carbon canister 200 restores the adsorption capacity; the desorbed fuel vapor is sucked into the engine 510 for combustion. The supercharger 520 has a non-working state and a working state, and when the supercharger 520 is in different states, the path of the fuel vapor sucked into the engine 510 is different. More specifically, the vapor inlet of the engine 510 includes a first vapor inlet and a second vapor inlet. The vapor branch 410 is formed with a first branch 411 and a second branch 412 in parallel at one end away from the vapor main line 420, wherein the first branch 411 is used to communicate with the first vapor inlet, and the second branch 412 is used to communicate with the second vapor inlet.

[0054] When the supercharger 520 is not working, the fuel vapor in the carbon canister 200 enters the engine 510 through the vapor main line 420, a vapor branch 410, the first branch 411, and the first vapor inlet; when the supercharger 520 is working, the fuel vapor in the carbon canister 200 enters the engine 510 through the vapor main line 420, a vapor branch 410, the second branch 412, and the second vapor inlet.

[0055] Please refer to Figure 1 and Figure 2 In the embodiment of the present application, the fuel supply system further comprises a carbon canister electromagnetic valve 600, which is arranged on the vapor pipeline 400. Specifically, the carbon canister electromagnetic valve 600 is used to control the communication or disconnection of the vapor pipeline 400, that is, to control the communication or non-communication of the carbon canister 200 and the engine 510. It can be understood that the fuel supply system further comprises a controller, which is electrically connected to the carbon canister electromagnetic valve 600, so as to control the opening or closing of the carbon canister electromagnetic valve 600 to control the on-off of the vapor pipeline 400. When the engine 510 is working, the controller controls the carbon canister electromagnetic valve 600 to open, so that the fuel vapor in the carbon canister 200 can enter the engine 510 to participate in combustion. When the engine 510 is not working, the controller controls the carbon canister electromagnetic valve 600 to close, so that the fuel vapor in the carbon canister 200 cannot enter the engine 510.

[0056] In the embodiment of the present application, the number of carbon tank electromagnetic valves 600 is equal to the number of engines 510, and one carbon tank electromagnetic valve 600 is arranged on each steam branch 410; a jet valve 700 is further arranged on each steam branch 410, and the jet valve 700 is arranged on the side of the carbon tank electromagnetic valve 600 close to the engine 510; when the supercharger 520 is not working, the fuel vapor flows into the engine 510 through the carbon tank 200, the steam main line 420, the steam branch 410, the carbon tank electromagnetic valve 600, the jet valve 700 and the first branch 411 in sequence; when the supercharger 520 is working, the fuel vapor flows into the engine 510 through the carbon tank 200, the steam main line 420, the steam branch 410, the carbon tank electromagnetic valve 600, the jet valve 700 and the second branch 412 in sequence.

[0057] Please refer to Figure 1 , specifically, in an embodiment, the plurality of steam branches 410 are not merged together at the end away from the steam main line 420, but are respectively used for connecting the respective corresponding engines 510, so that mutual gas mixing between the plurality of steam branches 410 can be avoided. In the embodiment, one carbon tank electromagnetic valve 600 is arranged on each steam branch 410, and in an embodiment, one controller is arranged corresponding to each engine 510, and the controller is used for controlling the opening or closing of the corresponding carbon tank electromagnetic valve 600 according to the working condition of the engine 510. Of course, in other embodiments, only one controller can be arranged in the fuel supply system, and the controller is used for controlling all the carbon tank electromagnetic valves 600. Here, the number of controllers in the fuel supply system is not limited. It is worth noting that the control logic between the controller and the components such as the carbon tank electromagnetic valve 600 belongs to the prior art, and will not be described here.

[0058] Please refer to Figure 1 , Figure 3 and Figure 4It can be understood that the fuel supply system is provided with a supercharger 520, in order to ensure that the fuel vapor can enter the engine 510 through the first branch 411 and the second branch 412 respectively when the supercharger 520 is not working and working, the fuel supply system is provided with a jet valve 700. Specifically, the jet valve 700 has a first opening 711, a second opening 712 and a third opening 713, wherein the first opening 711 is used to be connected with the supercharger 520, and it can be understood that in an embodiment, the supercharger 520 is arranged between the first opening 711 and the second vapor inlet of the engine 510. The second opening 712 is used to be connected with the carbon canister 200, and the third opening 713 is used to be connected with the first vapor inlet of the engine 510. The jet valve 700 comprises a first flow channel 721, a second flow channel 722, a third flow channel 723 and a fourth flow channel 724, the first flow channel 721, the fourth flow channel 724 and the third flow channel 723 are sequentially communicated, and the cross-sectional areas of the first flow channel 721 and the third flow channel 723 are both greater than that of the fourth flow channel 724, the fourth flow channel 724 is communicated with the second flow channel 722, one end of the first flow channel 721 away from the fourth flow channel 724 is communicated with the first opening 711, one end of the third flow channel 723 away from the fourth flow channel 724 is communicated with the third opening 713, and one end of the second flow channel 722 away from the fourth flow channel 724 is communicated with the second opening 712. The jet valve 700 further comprises a first one-way valve 731 and a second one-way valve 732, the first one-way valve 731 is arranged in the first flow channel 721 and located between the first opening 711 and the fourth flow channel 724, and enables the gas to flow in the direction from the fourth flow channel 724 to the first flow channel 721 and restricts the flow of the gas in the direction from the first flow channel 721 to the fourth flow channel 724. The second one-way valve 732 is arranged between the second opening 712 and the third opening 713, and enables the gas to flow in the direction from the second opening 712 to the third opening 713 and restricts the flow of the gas in the direction from the third opening 713 to the second opening 712. In this way, that is, the third opening 713 is communicated with the first vapor inlet of the engine 510 through the first branch 411, and the first opening 711 and the supercharger 520 are communicated with the second vapor inlet of the engine 510 through the second branch 412.

[0059] When the supercharger 520 is not working, at this time the vacuum in the intake manifold of the engine 510 is used to generate the desorption flow. The main path of the desorption flow passes through the second opening 712, the second one-way valve 732, the third opening 713 and the first vapor inlet to enter the engine 510; and a small desorption flow passes through the second opening 712, the second flow channel 722, the fourth flow channel 724, the third flow channel 723, the third opening 713 and the first vapor inlet to enter the engine 510.

[0060] When the supercharger 520 works, the boost pressure is generated in the intake manifold of the engine 510, and then the positive pressure flow is generated in the jet valve 700 from the third opening 713 to the first opening 711. Due to the Venturi effect, the negative pressure is generated at the fourth flow channel 724, so as to suck the fuel vapor from the second flow channel 722 into the fourth flow channel 724. That is, the fuel vapor sequentially passes through the second opening 712, the second flow channel 722, the fourth flow channel 724, the first flow channel 721, the first one-way valve 731, the first opening 711, the supercharger 520, the second branch 412, and the second vapor inlet of the engine 510.

[0061] Referring to Figure 2 In the embodiment of the present application, the vapor pipeline 400 further comprises a common pipeline 430, and the plurality of vapor branches 410 are connected to the common pipeline 430 at the ends away from the carbon canister 200. The common pipeline 430 is formed with a plurality of branch pipelines 440 at the ends away from the carbon canister 200, and one branch pipeline 440 is used to connect to one engine 510. The branch pipeline 440 is provided with a one-way valve, which is used to limit the flow of fuel vapor from one branch pipeline 440 to another branch pipeline 440.

[0062] Referring to Figure 2 In one embodiment, the plurality of vapor branches 410 are combined together at the ends away from the vapor main pipeline 420, so as to save the pipeline setting. Specifically, the vapor pipeline 400 is formed with a common pipeline 430 at the ends of the vapor branches 410 away from the vapor main pipeline 420, and the plurality of vapor branches 410 are communicated with the common pipeline 430 through a plurality of passages. The common pipeline 430 is formed with a plurality of branch pipelines 440 at the ends away from the vapor branches 410. It can be understood that the number of the branch pipelines 440 is the same as the number of the engines 510, and one branch pipeline 440 is used to communicate with the vapor inlet of one engine 510.

[0063] It can be understood that, in one embodiment, the fuel supply system further comprises a supercharger 520, and correspondingly, the engine 510 is provided with a first vapor inlet and a second vapor inlet. At this time, the branch pipeline 440 comprises a first branch 411 and a second branch 412 connected in parallel, so as to respectively communicate with the first vapor inlet and the second vapor inlet.

[0064] It can be understood that, in order to avoid the flow of fuel vapor between the plurality of branch pipelines 440, each branch pipeline 440 is provided with a one-way valve, so as to avoid the air flow between the branch pipelines 440.

[0065] In the embodiment of the present application, the number of the carbon canister electromagnetic valves 600 is equal to the number of the engines 510, or the number of the carbon canister electromagnetic valves 600 is less than the number of the engines 510, and at least one carbon canister electromagnetic valve 600 is connected to the plurality of engines 510 through a plurality of passages.

[0066] Specifically, in an embodiment, the number of carbon canister solenoid valves 600 can be equal to the number of engines 510, in which case one carbon canister solenoid valve 600 is provided on one vapor branch 410, and one carbon canister solenoid valve 600 corresponds to one engine 510. In another embodiment, the number of carbon canister solenoid valves 600 is less than the number of engines 510, and at least one carbon canister solenoid valve 600 needs to be connected to two or more engines 510 through a multi-way valve to ensure that fuel vapor can enter each engine 510. It can be understood that a plurality of parallel branch pipes 440 are formed between the multi-way valve and the engines 510, and one-way valves are provided on the branch pipes 440 to prevent fuel vapor from flowing between the branch pipes 440. In this embodiment, the number of carbon canister solenoid valves 600 is not limited.

[0067] Please refer to Figure 5 In the embodiment of the present application, the fuel supply pipeline 300 further comprises a fuel supply main pipe 320, one end of the fuel supply main pipe 320 is connected to the fuel tank 100, and the other end is respectively connected to the fuel supply branch pipes 310. In this way, by providing the fuel supply main pipe 320, only one fuel supply port can be provided on the fuel tank 100, avoiding the provision of multiple fuel supply ports, thereby facilitating the sealing of the fuel tank 100 and the simplification of the fuel supply pipeline 300.

[0068] Please refer to Figure 5 In the embodiment of the present application, the fuel supply system further comprises a fuel pump 800, which is arranged in the fuel tank 100.

[0069] It can be understood that the fuel pump 800 is used to pump fuel in the fuel tank 100 to the engine 510 to provide power for the flow of fuel. In an embodiment, the fuel pump 800 is provided in a plurality of numbers, and one fuel pump 800 is connected to one engine 510. That is, the number of fuel pumps 800 is equal to the number of engines 510, and one fuel pump 800 is used to pump fuel for one engine 510. Of course, the fuel pump 800 can also be provided in one number, and one fuel pump 800 is used to pump fuel for multiple engines 510. The number of fuel pumps is not limited herein.

[0070] In an embodiment, the fuel pump 800 is further integrated with a pressure regulating valve to regulate the pressure of the fuel. In an embodiment, a filter 900 is further provided on the fuel supply main pipe 320, which is used to filter the fuel to avoid the influence of impurities in the fuel on the engine 510. The rear end of the filter 900 is connected to the fuel supply main pipe 320 through a multi-way valve and a plurality of fuel supply branch pipes 310. In this way, the fuel is regulated in pressure by the pressure regulating valve integrated with the fuel pump 800, then reaches the filter 900 through the fuel supply main pipe 320 for filtration, and the filtered fuel can be supplied to the engine 510 through the fuel supply branch pipe 310.

[0071] The utility model discloses still a kind of vehicle, the vehicle includes fuel supply system, the specific structure of the fuel supply system refers to above-mentioned embodiment, since the vehicle adopts all technical solutions of above-mentioned all embodiments, at least have all beneficial effects brought by the technical scheme of above-mentioned embodiment, here no longer one by one elaboration.

[0072] The above is only exemplary embodiment of the utility model, and does not limit the patent range of the utility model, and any equivalent structural transformation made by using the utility model specification and drawing contents, or direct / indirect application in other related technical fields is included in the patent protection range of the utility model.

Claims

1. A fuel supply system, characterized in that, include: Multiple engines, fuel tanks, carbon canisters, fuel supply lines, evaporator lines, and steam lines; The fuel supply line includes multiple fuel supply branches, and the fuel tank's fuel inlet is connected to the engine's fuel inlet through one of the fuel supply branches. The evaporation port of the fuel tank is connected to the inlet of the carbon canister through the evaporation pipe; The steam pipeline includes multiple steam branches, and the steam inlet of the engine is connected to the outlet of the carbon canister through one of the steam branches.

2. The fuel supply system as described in claim 1, characterized in that, The steam pipeline also includes a main steam line, one end of which is connected to the outlet of the carbon canister, and the other end is connected to multiple steam branch lines.

3. The fuel supply system as described in claim 2, characterized in that, The fuel supply system also includes multiple turbochargers, one end of which is connected to one of the engines and the other end is connected to the outside. The steam branch has a first branch and a second branch connected in parallel at the end away from the main steam line, and the first branch and the second branch are respectively connected to the engine.

4. The fuel supply system as described in claim 3, characterized in that, The fuel supply system also includes a carbon canister solenoid valve, which is located on the steam pipeline.

5. The fuel supply system as described in claim 4, characterized in that, The number of carbon canister solenoid valves is equal to the number of engines, and one carbon canister solenoid valve is provided on each of the steam branches; The steam branch is also equipped with a jet valve, which is located on the side of the carbon canister solenoid valve near the engine; When the turbocharger is not working, fuel vapor flows into the engine sequentially through the carbon canister, the main steam line, the steam branch line, the carbon canister solenoid valve, the jet valve, and the first branch line; When the turbocharger is working, fuel vapor flows into the engine sequentially through the carbon canister, the main steam line, the steam branch line, the carbon canister solenoid valve, the jet valve, and the second branch line.

6. The fuel supply system as claimed in claim 4, characterized in that, The steam pipeline also includes a common pipeline, and the multiple steam branches are connected to the common pipeline at the end away from the carbon canister. The end of the common pipeline away from the carbon canister forms multiple branch pipelines, and one of the branch pipelines is used to connect to one of the engines. A one-way valve is provided on the branch pipeline, and the one-way valve is used to restrict the flow of fuel vapor from one branch pipeline to another.

7. The fuel supply system as described in any one of claims 4 to 6, characterized in that, The number of carbon canister solenoid valves is equal to the number of engines; Alternatively, the number of the carbon canister solenoid valves is less than the number of the engines, and at least one of the carbon canister solenoid valves is connected to multiple engines via a multi-port valve.

8. The fuel supply system as claimed in claim 1, characterized in that, The fuel supply pipeline also includes a main fuel supply line, one end of which is connected to the fuel tank, and the other end is connected to multiple fuel supply branches.

9. The fuel supply system as claimed in claim 1, characterized in that, The fuel supply system also includes a fuel pump located inside the fuel tank.

10. The fuel supply system as claimed in claim 9, characterized in that, The fuel pump is provided in multiple parts, and one of the fuel pumps is connected to one of the engines.

11. A vehicle, characterized in that, The vehicle includes a fuel supply system as described in any one of claims 1 to 10.

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