Fuel desorption device and system, vehicle and control method of fuel desorption system

Abstract

The invention relates to the technical field of vehicles, in particular to a fuel desorption device and system, a vehicle and a control method of the fuel desorption system.The fuel desorption device comprises a desorption pump used for conducting desorption treatment on fuel steam of a fuel tank; the condenser is used for condensing the fuel oil steam subjected to desorption treatment to obtain liquefied fuel oil; and the conveying assembly is used for conveying the liquefied fuel oil to a high-pressure oil pump of the engine. Therefore, the problems that in the prior art, due to the fact that each air inlet manifold of a fuel desorption device is connected with a desorption pipeline, uneven air inlet of an engine cylinder is likely to be caused for a multi-cylinder engine, and then the working efficiency and stability of the engine are affected are solved.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to a fuel desorption device, system, vehicle, and a control method for the fuel desorption system. Background Art

[0002] Fuel desorption technology mainly uses activated carbon canisters to adsorb and store fuel vapor generated in the fuel tank. These fuel vapors are generated due to the natural evaporation of fuel, especially when the vehicle is stopped or the engine is not running.

[0003] In the related art, the fuel vapor stored in the activated carbon canister is re-inhaled into the engine for combustion through the pressure at the intake manifold. However, each intake manifold usually has only one interface connected to the desorption pipeline. For a multi-cylinder engine, this single interface design can easily lead to uneven intake volume in each cylinder, thereby affecting the engine's working efficiency and stability. If the fuel vapor directly enters the intake manifold, it may affect the ratio of air to fuel, thereby reducing combustion efficiency. If the fuel vapor cannot be effectively recycled, it may increase the emission of volatile organic compounds and cause pollution to the environment. Summary of the invention

[0004] The present application provides a fuel desorption device, system, vehicle, control method of the fuel desorption system, storage medium and program product to solve the problem that each intake manifold of the fuel desorption device is connected to the desorption pipeline in the related art, which may easily cause uneven air intake in the engine cylinders for a multi-cylinder engine, thereby affecting the engine's working efficiency and stability.

[0005] The first aspect of the present application provides a fuel desorption device, including: a desorption pump for desorbing fuel vapor in a fuel tank; a condenser for condensing the desorbed fuel vapor to obtain liquefied fuel; and a delivery component for delivering the liquefied fuel to a high-pressure oil pump of an engine.

[0006] Optionally, the delivery component includes a supercharger and a one-way valve; wherein the supercharger is used to pressurize the liquefied fuel, and the one-way valve is located at the connecting port between the desorption pipeline and the high-pressure oil pump of the engine, and is used to control the conduction and closing of the desorption pipeline and the high-pressure oil pump of the engine.

[0007] Optionally, it also includes: a carbon canister and a carbon canister shut-off valve, wherein the carbon canister is used to adsorb fuel vapor and store the fuel vapor; the carbon canister shut-off valve is used to control the conduction and closing of the activated carbon canister and the desorption pipeline.

[0008] The second aspect of the present application provides a fuel desorption system, comprising: a fuel tank and an engine, wherein the fuel tank is connected to a high-pressure oil pump of the engine; a fuel desorption device as claimed in any one of claims 1 to 3, wherein one end of the fuel desorption device is connected to the fuel tank via a desorption pipeline, and the other end is connected to the engine via a desorption pipeline.

[0009] A third aspect of the present application provides a vehicle, comprising: a fuel desorption system as described in the above embodiment.

[0010] The fourth aspect of the present application provides a control method for a fuel desorption system, which is applied to the fuel desorption system of the above-mentioned embodiment, wherein the method includes the following steps: identifying the current state of the engine; and controlling the fuel desorption system to perform target operations according to the current state of the engine.

[0011] Optionally, the target operation is performed by controlling the fuel desorption system according to the current state of the engine, including: if the current state of the engine is in the target state, controlling the fuel desorption device to desorb the fuel vapor in the fuel tank, and condensing the desorbed fuel vapor to obtain liquefied fuel, and pressurizing the liquefied fuel and delivering it to the high-pressure oil pump of the engine.

[0012] Optionally, controlling the fuel desorption system to perform the target operation according to the current state of the engine also includes: if the current state of the engine is in the target state, controlling the carbon canister shutoff valve and the one-way valve to open; otherwise, controlling the carbon canister shutoff valve and the one-way valve to close.

[0013] A fifth aspect of the present application provides a computer-readable storage medium having a computer program stored thereon, the program being executed by a processor to perform the control method of the fuel desorption system as described in the above embodiment.

[0014] The sixth aspect of the present application provides a computer program product, including a computer program or instructions, characterized in that when the computer program or instructions are executed, the control method of the fuel desorption system as described in the above embodiment is implemented.

[0015] Therefore, this application has at least the following beneficial effects:

[0016] The embodiment of the present application can utilize a desorption pump to desorb the fuel vapor in the fuel tank, utilize a condenser to condense the fuel vapor to obtain liquefied fuel, and then utilize a conveying component to input the liquefied fuel into the high-pressure oil pump of the engine, thereby providing it to the engine for use when the engine is running, thereby avoiding uneven air intake in the engine cylinders and ensuring the working efficiency and stability of the engine.

[0017] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0019] Figure 1 A block diagram of a fuel desorption device provided according to an embodiment of the present application;

[0020] Figure 2 A block diagram of a fuel desorption system provided according to an embodiment of the present application;

[0021] Figure 3 A schematic diagram of a fuel desorption system provided according to an embodiment of the present application;

[0022] Figure 4 The present invention is a flowchart of a method for controlling a fuel desorption system according to an embodiment of the present application.

[0023] Explanation of reference numerals: fuel desorption device 10 , desorption pump 110 , condenser 120 , delivery assembly 130 , supercharger 131 , one-way valve 132 , carbon canister 140 , carbon canister stop valve 150 , fuel tank 210 , engine 220 . DETAILED DESCRIPTION

[0024] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0025] The fuel desorption device, system, vehicle, control method of the fuel desorption system, storage medium and program product of the embodiment of the present application are described below with reference to the accompanying drawings. In view of the problem that each intake manifold of the fuel desorption device in the related art mentioned in the background technology center is connected to the desorption pipeline, which is easy to cause uneven air intake in the engine cylinder for a multi-cylinder engine, thereby affecting the working efficiency and stability of the engine, the present application provides a fuel desorption device, in which a desorption pump is used to desorb the fuel vapor in the fuel tank, a condenser is used to condense the fuel vapor to obtain liquefied fuel, and then a conveying component is used to input the liquefied fuel into the high-pressure oil pump of the engine, so as to provide it to the engine when the engine is running, thereby avoiding the occurrence of uneven air intake in the engine cylinder and ensuring the working efficiency and stability of the engine. Thus, the problem that each intake manifold of the fuel desorption device in the related art is connected to the desorption pipeline, which is easy to cause uneven air intake in the engine cylinder for a multi-cylinder engine, thereby affecting the working efficiency and stability of the engine, is solved.

[0026] Specifically, Figure 1 A block diagram of a fuel desorption device provided in an embodiment of the present application.

[0027] like Figure 1 As shown, the fuel desorption device 10 includes: a desorption pump 110 , a condenser 120 and a delivery component 130 .

[0028] Among them, the desorption pump 110 is used to desorb the fuel vapor in the fuel tank; the condenser 120 is used to condense the desorbed fuel vapor to obtain liquefied fuel; and the delivery component 130 is used to deliver the liquefied fuel to the high-pressure oil pump of the engine.

[0029] It can be understood that the embodiment of the present application desorbs the fuel vapor in the fuel tank, condenses the desorbed fuel vapor to obtain liquefied fuel, and delivers the liquefied fuel to the high-pressure oil pump of the engine, thereby providing it to the engine for use when the engine is running, thereby avoiding uneven air intake in the engine cylinders and ensuring the engine's operating efficiency and stability.

[0030] Specifically, the desorption pump extracts fuel vapor from the activated carbon canister through negative pressure or positive pressure; the extracted fuel vapor is sent to the condenser and liquefied through cooling; the liquefied fuel is pressurized by the supercharger and then sent to the engine high-pressure oil pump.

[0031] In the embodiment of the present application, the delivery assembly 130 includes a pressure intensifier 131 and a one-way valve 132 .

[0032] The supercharger 131 is used to pressurize the liquefied fuel, and the one-way valve 132 is located at the connection between the desorption pipeline and the high-pressure oil pump of the engine, and is used to control the conduction and closing of the desorption pipeline and the high-pressure oil pump of the engine.

[0033] It can be understood that the supercharger in the embodiment of the present application pressurizes the liquefied fuel to ensure that the liquefied fuel can smoothly enter the high-pressure oil pump of the engine. The one-way valve can prevent the liquefied fuel from flowing back into the desorption pipeline when the supercharger stops working, thereby ensuring the stability and safety of the system.

[0034] In the embodiment of the present application, it also includes: a carbon canister 140 and a carbon canister stop valve 150 .

[0035] The carbon canister 140 is used to adsorb and store fuel vapor; the carbon canister shut-off valve 150 is used to control the conduction and closing of the activated carbon canister and the desorption pipeline.

[0036] It can be understood that in the embodiment of the present application, when the vehicle is stopped or the engine is not running, the fuel in the fuel tank will naturally evaporate to produce fuel vapor. The carbon canister can not only absorb the fuel vapor, but also store the fuel vapor to prevent a large amount of fuel vapor from being directly discharged into the air in a short period of time, thereby realizing the reuse of fuel, improving fuel efficiency, and reducing pollutant emissions; the carbon canister shut-off valve can be kept closed when the engine is not running to prevent the fuel vapor stored in the activated carbon canister from escaping into the atmosphere; it can be opened when the engine is started and running, allowing the fuel vapor in the activated carbon canister to enter the engine's intake system through the pipeline so that it can be re-inhaled into the combustion chamber for combustion, thereby improving combustion efficiency.

[0037] According to the fuel desorption device proposed in the embodiment of the present application, a desorption pump is used to desorb the fuel vapor in the fuel tank, a condenser is used to condense the fuel vapor to obtain liquefied fuel, and then a conveying component is used to input the liquefied fuel into the high-pressure oil pump of the engine, so as to provide it to the engine for use when the engine is running, thereby avoiding uneven air intake in the engine cylinders and ensuring the working efficiency and stability of the engine.

[0038] Next, the fuel desorption system proposed according to the embodiment of the present application is described with reference to the accompanying drawings.

[0039] Figure 2 It is a block diagram of a fuel desorption system according to an embodiment of the present application.

[0040] like Figure 2 As shown, the fuel desorption system 20 includes: a fuel tank 210 , an engine 220 and a fuel desorption device 10 .

[0041] The fuel tank 210 is connected to the high-pressure fuel pump of the engine 220 ; one end of the fuel desorption device 10 is connected to the fuel tank 210 through a desorption pipeline, and the other end is connected to the engine 220 through a desorption pipeline.

[0042] It can be understood that the embodiment of the present application can utilize the fuel desorption device to desorb and condense the fuel vapor in the fuel tank to obtain liquefied fuel, and then input the liquefied fuel into the engine's high-pressure oil pump, thereby providing it to the engine for use when the engine is running, avoiding uneven air intake in the engine cylinders and ensuring the engine's operating efficiency and stability.

[0043] Specifically, the fuel desorption system of the present application utilizes an active desorption pump to desorb the fuel vapor in the activated carbon canister, adds a condenser and a supercharger between the active desorption pump and the high-pressure oil pump, utilizes the condensing equipment to liquefy the fuel vapor, and then utilizes the supercharger to input the liquid into the high-pressure oil pump, and at the same time, adds a one-way valve at the connection port between the desorption pipeline and the high-pressure oil pump to prevent the oil from flowing back when the supercharger stops working, thereby ensuring the normal operation of the engine.

[0044] According to the fuel desorption system proposed in the embodiment of the present application, the fuel vapor in the fuel tank of the fuel desorption device is desorbed and condensed to obtain liquefied fuel, and then the liquefied fuel is input into the high-pressure oil pump of the engine, so as to be provided to the engine for use when the engine is running, thereby avoiding uneven air intake in the engine cylinders and ensuring the working efficiency and stability of the engine.

[0045] An embodiment of the present application also provides a vehicle, comprising a fuel desorption system as described in the above embodiment.

[0046] Next, a control method for a fuel desorption system according to an embodiment of the present application will be described with reference to the accompanying drawings.

[0047] Figure 4 It is a flow chart of a control method of a fuel desorption system according to an embodiment of the present application.

[0048] like Figure 4 As shown, the control method of the fuel desorption system includes the following steps:

[0049] In step S101 , the current state of the engine is identified.

[0050] It can be understood that the embodiments of the present application can identify the current state of the engine so as to subsequently control the fuel desorption system to perform the target operation according to the current state of the engine.

[0051] It should be noted that the state of the engine includes the engine not running state and the engine running state, and is not specifically limited.

[0052] In step S102, the fuel desorption system is controlled to perform a target operation according to the current state of the engine.

[0053] It can be understood that the embodiments of the present application can control the fuel desorption system to perform target operations according to the current state of the engine.

[0054] In an embodiment of the present application, the fuel desorption system is controlled to perform a target operation according to the current state of the engine, including: if the current state of the engine is in the target state, the fuel desorption device is controlled to desorb the fuel vapor in the fuel tank, and the desorbed fuel vapor is condensed to obtain liquefied fuel, and the liquefied fuel is pressurized and delivered to the high-pressure oil pump of the engine.

[0055] The target state may be the engine operation stage, which may be determined based on the engine speed and temperature, etc., without any specific limitation.

[0056] It can be understood that in the embodiment of the present application, when the current state of the engine is in the target state, the fuel desorption device is controlled to desorb the fuel vapor in the fuel tank, and the desorbed fuel vapor is condensed to obtain liquefied fuel, and the liquefied fuel is pressurized and delivered to the high-pressure oil pump of the engine, thereby avoiding uneven air intake in the engine cylinders and ensuring the working efficiency and stability of the engine.

[0057] In an embodiment of the present application, the fuel desorption system is controlled to perform a target operation according to the current state of the engine, and also includes: if the current state of the engine is in the target state, the carbon canister shut-off valve and the one-way valve are controlled to be opened; otherwise, the carbon canister shut-off valve and the one-way valve are controlled to be closed.

[0058] It can be understood that, in the embodiment of the present application, when the current state of the engine is in the target state, the carbon canister shut-off valve is controlled to open, thereby allowing the fuel vapor in the activated carbon canister to enter the engine's intake system through the pipeline so as to be re-inhaled into the combustion chamber for combustion; the one-way valve is controlled to open to prevent the liquefied fuel from flowing back into the desorption pipeline when the supercharger stops working, thereby ensuring the stability and safety of the system.

[0059] According to the control method of the fuel desorption system proposed in the embodiment of the present application, the current state of the engine is identified. When the current state of the engine is in the target state, the fuel desorption device is controlled to desorb the fuel vapor in the fuel tank, and the fuel vapor after the desorption process is condensed to obtain liquefied fuel, and the liquefied fuel is pressurized and delivered to the high-pressure oil pump of the engine, thereby avoiding uneven air intake in the engine cylinders and ensuring the working efficiency and stability of the engine.

[0060] The following will be combined Figure 3 The fuel desorption system of the whole process is described in detail. The specific steps are as follows:

[0061] Step 1, fuel vapor adsorption

[0062] When the vehicle stops or the engine is not running, the fuel in the fuel tank will naturally evaporate to produce fuel vapor. These fuel vapors are introduced into the activated carbon canister through the pipeline and adsorbed and stored by the activated carbon in the activated carbon canister.

[0063] Step 2: Determine the desorption conditions

[0064] After the engine starts and runs for a period of time, the control system determines whether the desorption conditions are met based on the engine's operating conditions (such as speed, temperature, etc.). Once the conditions are met, the control system will activate the carbon canister solenoid valve to start the desorption process.

[0065] Step 3, active desorption

[0066] After the carbon canister solenoid valve is opened, the active desorption pump starts to work and extracts the adsorbed fuel vapor from the activated carbon canister. The active desorption pump provides the necessary pressure to ensure that the fuel vapor can be effectively desorbed from the activated carbon canister.

[0067] Step 4: Condensation and liquefaction

[0068] The desorbed fuel vapor enters the condensing device through the pipeline. The condensing device uses a cooling medium (such as air or water) to cool the fuel vapor to the liquefaction point, turning the fuel vapor into liquid fuel.

[0069] Step 5: Boost transmission

[0070] The liquefied fuel is then pressurized by a supercharger to ensure that it has sufficient pressure to enter the engine's high-pressure fuel pump. The supercharger increases the pressure of the liquefied fuel to meet the requirements of the high-pressure fuel pump.

[0071] Step 6: Prevent backflow

[0072] A one-way valve is installed at the connection between the desorption pipeline and the high-pressure oil pump. The function of the one-way valve is to prevent the liquefied fuel from flowing back into the desorption system when the supercharger stops working, so as to ensure the stability and safety of the system.

[0073] Step 7: Fuel Recycling

[0074] The pressurized liquefied fuel is sent to the high-pressure fuel pump and finally enters the combustion chamber of the engine to participate in combustion.

[0075] This not only reduces the emission of fuel vapor, but also improves fuel utilization and enhances the engine's operating efficiency and stability.

[0076] The embodiment of the present application also provides a computer-readable storage medium on which a computer program or instruction is stored. When the computer program or instruction is executed by a processor, the control method of the fuel desorption system as described above is implemented.

[0077] An embodiment of the present application also provides a computer program product, including a computer program or instructions, characterized in that when the computer program or instructions are executed, the control method of the fuel desorption system as described above is implemented.

[0078] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or N embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0079] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, "N" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0080] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, fragment or portion of code comprising one or N executable instructions for implementing the steps of a custom logical function or process, and the scope of the preferred embodiments of the present application includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in reverse order depending on the functions involved, which should be understood by technicians in the technical field to which the embodiments of the present application belong.

[0081] It should be understood that the various parts of the present application can be implemented by hardware, software, firmware or a combination thereof. In the above embodiment, the N steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one or a combination of multiple of the following technologies known in the art: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0082] A person skilled in the art may understand that all or part of the steps in the method for implementing the above-mentioned embodiment may be completed by instructing related hardware through a program, and the program may be stored in a computer-readable storage medium, which, when executed, includes one or a combination of the steps of the method embodiment.

Claims

1. A fuel desorption device, characterized in that: include: A desorption pump, used for desorption of fuel vapor from the fuel tank; A condenser, used to condense the fuel vapor after desorption treatment to obtain liquefied fuel; The delivery component is used to deliver the liquefied fuel to the high-pressure oil pump of the engine.

2. The fuel desorption device according to claim 1, wherein the delivery assembly comprises a pressure booster and a one-way valve; in, The supercharger is used to pressurize the liquefied fuel, and the one-way valve is located at the connection between the desorption pipeline and the high-pressure oil pump of the engine, and is used to control the conduction and closing of the desorption pipeline and the high-pressure oil pump of the engine.

3. The fuel desorption device according to claim 1, further comprising: Carbon canister and carbon canister stop valve, including: The carbon canister is used to absorb fuel vapor and store the fuel vapor; The carbon canister stop valve is used to control the conduction and closing of the activated carbon canister and the desorption pipeline.

4. A fuel desorption system, characterized in that: include: A fuel tank and an engine, wherein the fuel tank is connected to a high-pressure oil pump of the engine; A fuel desorption device according to any one of claims 1 to 3, wherein one end of the fuel desorption device is connected to the fuel tank via a desorption pipeline, and the other end is connected to the engine via a desorption pipeline.

5. A vehicle comprising the fuel desorption system according to claim 4.

6. A control method for a fuel desorption system, characterized in that: The method is applied to the fuel desorption system according to claim 4, wherein the method comprises the following steps: Identify the current state of the engine; The fuel desorption system is controlled to perform a target operation according to the current state of the engine.

7. The control method of the fuel desorption system according to claim 6, characterized in that: The controlling the fuel desorption system to perform a target operation according to the current state of the engine includes: If the current state of the engine is in the target state, the fuel desorption device is controlled to desorb the fuel vapor in the fuel tank, and the desorbed fuel vapor is condensed to obtain liquefied fuel, and the liquefied fuel is pressurized and delivered to the high-pressure fuel pump of the engine.

8. The control method of the fuel desorption system according to claim 7, characterized in that: The controlling the fuel desorption system to perform a target operation according to the current state of the engine further includes: If the current state of the engine is in the target state, the carbon canister stop valve and the one-way valve are controlled to be opened; otherwise, the carbon canister stop valve and the one-way valve are controlled to be closed.

9. A computer-readable storage medium having a computer program or instruction stored thereon, characterized in that: When the computer program or instruction is executed by the processor, it is used to implement the control method of the fuel desorption system as described in claims 6-8.

10. A computer program product comprising a computer program or instructions, characterized in that When the computer program or instruction is executed, the control method of the fuel desorption system as described in any one of claims 6 to 8 is implemented.

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