Methanol fuel supply system and control method and apparatus therefor, and storage medium and product

Abstract

A methanol fuel supply system, comprising a methanol fuel tank (20), a main methanol pump (30), a methanol heating filter (40) and / or a methanol heating reservoir (50), and a fuel rail injector assembly (60), which are connected in sequence by means of a main fuel path pipe (10), wherein the methanol heating filter (40) and / or the methanol heating reservoir (50) is connected to the fuel rail injector assembly (60) via an auxiliary methanol pump (70) by means of an auxiliary fuel path pipe (80). The methanol fuel supply system can eliminate the requirement for an additional gasoline fuel supply system, and it is not necessary for a user to refill his / her vehicle with gasoline, and therefore the use convenience of a methanol engine is effectively improved. Also provided are a control method for the methanol fuel supply system, a methanol fuel supply apparatus, and a computer storage medium and a program product for implementing the control method for the methanol fuel supply system.

Description

Methanol fuel supply system and control method, equipment, storage medium and product thereof

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on January 30, 2024, with application number 202410127141.3 and invention name “Methanol fuel supply system and its control method, equipment, storage medium and product”, the entire contents of which are incorporated by reference into the application. Technical Field

[0002] The present application relates to the field of vehicle technology, and in particular to a methanol fuel supply system and its control method, equipment, storage medium and product. Background Art

[0003] With the development of vehicle energy technology, vehicle energy is moving towards a new energy supply structure, and methanol-powered vehicles using methanol fuel are receiving more and more attention.

[0004] However, methanol has a high latent heat of vaporization and poor volatility at low temperatures, making it difficult for the combustible mixture concentration to reach the ignition limit, making it difficult for methanol engines to start at low temperatures. Currently, methanol engines are typically started with gasoline as an auxiliary fuel, and then switched to methanol fuel after the engine water temperature reaches a certain level.

[0005] Therefore, the cold start solution of this methanol engine will not only cause the problem of inconvenience in gasoline refueling, but also require a new gasoline fuel supply system to be added to the vehicle, which increases the purchase cost of the vehicle. In other words, the existing methanol engine is less convenient to use. Technical issues

[0006] The main purpose of this application is to provide a methanol fuel supply system and its control method, equipment, storage medium and product, aiming to solve the technical problem of poor ease of use of existing methanol engines. Technical Solutions

[0007] To achieve the above objectives, in a first aspect, the present application provides a methanol fuel supply system, comprising a methanol fuel tank, a main methanol pump, a methanol heating filter and / or a methanol heating tank, and a fuel rail injector assembly connected in sequence by a main oil pipeline;

[0008] The methanol heating filter and / or the methanol heating tank are connected to the fuel rail injector assembly through an auxiliary oil pipeline via an auxiliary methanol pump.

[0009] According to the first aspect, the methanol heating filter comprises a filter housing and a filter element;

[0010] The filter element is arranged inside the filter housing, and divides the interior of the filter housing into an outer filter cavity and an inner filter cavity;

[0011] The filter outer cavity is provided with a first oil inlet, and the first oil inlet is connected to the main methanol pump through a main oil pipeline;

[0012] The filter inner cavity is provided with a first oil outlet, and the first oil outlet is connected to the fuel rail injector assembly;

[0013] The filter outer cavity is provided with a first heating element for heating the methanol fuel flowing through the methanol heating filter.

[0014] According to the first aspect, or any implementation of the first aspect above, a second oil outlet is further provided on the inner filter cavity;

[0015] The first oil outlet is connected to the oil rail injector assembly via a main oil pipeline;

[0016] The second oil outlet is connected to the fuel rail injector assembly through the auxiliary oil pipeline and the auxiliary methanol pump.

[0017] According to the first aspect, or any implementation of the first aspect above, the first oil outlet is connected to the first valve port of the first three-way valve;

[0018] The second valve port of the first three-way valve is connected to the fuel rail injector assembly through a main oil pipeline;

[0019] The third valve port of the first three-way valve is connected to the fuel rail injector assembly through the auxiliary oil pipeline and the auxiliary methanol pump.

[0020] According to the first aspect, or any implementation of the first aspect above, the first oil outlet is connected to the fuel rail injector assembly via the methanol heating tank.

[0021] According to the first aspect, or any one of the implementations of the first aspect above, the methanol heating tank includes a heating tank shell and a second heating element;

[0022] The heating tank shell is provided with a second oil inlet, and the second oil inlet is connected to the main methanol pump;

[0023] The heating tank shell is provided with a third oil outlet, and the third oil outlet is connected to the oil rail injector assembly;

[0024] The second heating element is arranged inside the heating tank shell and is used to heat the methanol fuel inside the heating tank shell.

[0025] According to the first aspect, or any implementation of the first aspect above, a fourth oil outlet is further provided on the heating tank shell;

[0026] The third oil outlet is connected to the oil rail injector assembly through the main oil pipeline;

[0027] The fourth oil outlet is connected to the fuel rail injector assembly through the auxiliary oil pipeline and the auxiliary methanol pump.

[0028] According to the first aspect, or any implementation of the first aspect above, the third oil outlet is connected to the first valve port of the second three-way valve;

[0029] The second valve port of the second three-way valve is connected to the fuel rail injector assembly through a main oil pipeline;

[0030] The third valve port of the second three-way valve is connected to the fuel rail injector assembly through the auxiliary oil pipeline and the auxiliary methanol pump.

[0031] According to the first aspect, or any implementation of the first aspect above, the second oil inlet is connected to the main methanol pump via the methanol heating filter.

[0032] According to the first aspect, or any implementation of the first aspect above, the fuel rail injector assembly includes a fuel rail and at least one injector disposed on the fuel rail;

[0033] The oil rail is also provided with a pressure sensor and a temperature sensor.

[0034] According to the first aspect, or any implementation of the first aspect above, an electromagnetic on-off valve is provided on the main oil pipeline between the main methanol pump and the methanol heating filter.

[0035] According to the first aspect, or any implementation of the first aspect above, a main oil circuit check valve is provided on the main oil circuit pipeline between the methanol heating tank and the fuel rail injector assembly, for preventing the fuel rail injector assembly from returning oil to the methanol heating tank.

[0036] In a second aspect, the present application provides a method for controlling a methanol fuel supply system, which is applied to the methanol fuel supply system described above. The method for controlling a methanol fuel supply system includes:

[0037] When the methanol engine is in a cold start condition, starting the main methanol pump for a preset pumping time so that methanol fuel is pumped from the methanol fuel tank to the methanol heating filter and / or the methanol heating tank;

[0038] Starting the first heating element of the methanol heating filter and / or the second heating element in the methanol heating tank until the temperature of the methanol fuel reaches a preset target temperature;

[0039] The auxiliary methanol pump is started to pump the methanol fuel at a preset target temperature to the fuel rail injector, so that the fuel rail injector injects the methanol fuel into the methanol engine.

[0040] According to the second aspect, after the step of starting the auxiliary methanol pump to pump the methanol fuel at a preset target temperature to the fuel rail injector, the method includes:

[0041] Obtaining the real-time water temperature of the methanol engine;

[0042] After the real-time water temperature is higher than the preset operating temperature, the auxiliary methanol pump, the first heating element and the second heating element are turned off, and the main methanol pump is started.

[0043] According to the second aspect, or any implementation of the second aspect above, before the step of starting the main methanol pump to preset the pumping time, the method includes:

[0044] Obtaining a mapping table of the current water temperature and pumping duration of the methanol engine, wherein the water temperature-duration mapping table includes a mapping relationship between the engine water temperature and the pumping duration, and the pumping duration is negatively correlated with the engine water temperature;

[0045] According to the current water temperature, the water temperature-duration mapping table is queried to obtain the preset pumping duration corresponding to the current water temperature.

[0046] In a third aspect, the present application provides a control device for a methanol fuel supply system, the control device for the methanol fuel supply system comprising: a memory, a processor, the memory storing a computer program that can be run on the processor, and the computer program being configured to implement the steps of the control method for the methanol fuel supply system as described above.

[0047] In a fourth aspect, the present application provides a computer-readable storage medium storing a computer program. When the computer program is executed by a processor, the processor executes the steps of the control method of the methanol fuel supply system as described above.

[0048] In a fifth aspect, an embodiment of the present application provides a computer program, wherein the computer program product includes a computer program, and when the computer program is executed by a processor, the steps of the control method of the methanol fuel supply system described above are implemented. Beneficial effects

[0049] The present application proposes a methanol fuel supply system, which includes a methanol fuel tank, a main methanol pump, a methanol heating filter and / or a methanol heating tank, and a fuel rail injector assembly, which are connected in sequence by a main oil pipeline; the methanol heating filter and / or the methanol heating tank are connected to the fuel rail injector assembly via an auxiliary oil pipeline via an auxiliary methanol pump. Thus, the present application can rapidly heat a small amount of methanol fuel in a low-temperature environment using a methanol heating filter and / or a methanol heating tank with a heating function. When the temperature of the methanol fuel reaches a preset target temperature, the auxiliary methanol pump in the auxiliary oil pipeline operates to eject the heated methanol fuel through the fuel rail injector assembly, allowing the methanol engine to achieve a cold start using the high-temperature methanol fuel and complete warm-up. The present application can complete a cold start of a methanol engine without the aid of gasoline, eliminating the need for an additional gasoline fuel supply system. Users do not need to refill their vehicles with gasoline, thereby effectively improving the ease of use of the methanol engine. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] FIG1 is a schematic structural diagram of a first embodiment of a methanol fuel supply system of the present application;

[0051] FIG2 is a schematic structural diagram of a methanol heating filter according to an embodiment of the present application;

[0052] FIG3 is a structural diagram of a second embodiment of a methanol fuel supply system of the present application;

[0053] FIG4 is a schematic structural diagram of a methanol heating tank according to an embodiment of the present application;

[0054] FIG5 is a schematic structural diagram of a third embodiment of a methanol fuel supply system of the present application;

[0055] FIG6 is a schematic structural diagram of a fourth embodiment of a methanol fuel supply system of the present application;

[0056] FIG7 is a flow chart of an embodiment of a method for controlling a methanol fuel supply system according to the present invention;

[0057] FIG8 is a schematic diagram of the device structure of the hardware operating environment involved in the embodiment of the present application.

[0058] Description of Figure Numbers:

[0059] Reference number name Reference number name 10 main oil pipeline 11 first three-way valve 20 methanol fuel tank 51 heating tank housing 30 main methanol pump 52 second heating element 40 methanol heating filter 53 second oil inlet 50 methanol heating tank 54 third oil outlet 60 fuel rail injector assembly 55 fourth oil outlet 70 auxiliary methanol pump 12 second three-way valve 80 auxiliary oil pipeline 61 fuel rail 41 filter housing 62 fuel injector 42 filter element 63 pressure sensor 411 filter outer cavity 64 temperature sensor 412 filter inner cavity 13 electromagnetic on-off valve 43 first oil inlet 14 main oil circuit one-way valve 44 first oil outlet 15 first pressure regulating valve 45 first heating element 16 second pressure regulating valve 46 second oil outlet 21 oil suction filter

[0060] The realization of the objectives, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. Modes for Carrying Out the Invention

[0061] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0062] The term "and / or" in this article is merely a description of the association relationship between associated objects, indicating that three relationships may exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone.

[0063] In the description and claims of the embodiments of this application, the terms "first" and "second" are used to distinguish different objects, rather than to describe a specific order of objects. For example, the terms "first target object" and "second target object" are used to distinguish different objects, rather than to describe a specific order of objects.

[0064] In the embodiments of this application, words such as "exemplary" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of this application should not be interpreted as being preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "for example" is intended to present the relevant concepts in a concrete manner.

[0065] It should be understood that the specific embodiments described herein are only used to explain the present application and are not intended to limit the present application.

[0066] To better describe the technical solution of the present application, the methanol fuel supply system of the present application is described below in combination with some existing technologies:

[0067] With the development of vehicle energy technology, vehicle energy is moving towards a new energy supply structure, and methanol-powered vehicles using methanol fuel are receiving more and more attention.

[0068] However, methanol has a high latent heat of vaporization and poor volatility at low temperatures, making it difficult for the combustible mixture concentration to reach the ignition limit, making it difficult for methanol engines to start at low temperatures. Currently, methanol engines are typically started with gasoline as an auxiliary fuel, and then switched to methanol fuel after the engine water temperature reaches a certain level.

[0069] Therefore, the cold start solution of this methanol engine will not only cause the problem of inconvenience in gasoline refueling, but also require a new gasoline fuel supply system on the vehicle, which increases the purchase cost of the vehicle. The existing methanol engine is less convenient to use.

[0070] This application can rapidly heat a small amount of methanol fuel in a low-temperature environment using a methanol heating filter and / or a methanol heating tank with a heating function. When the temperature of the methanol fuel reaches a preset target temperature, the auxiliary methanol pump in the auxiliary oil pipeline operates to eject the heated methanol fuel through the fuel rail injector assembly, allowing the methanol engine to achieve a cold start using the high-temperature methanol fuel and complete the warm-up of the methanol engine. This application can complete the cold start of the methanol engine without the aid of gasoline, eliminating the need for an additional gasoline fuel supply system and eliminating the need for users to refill their vehicles with gasoline, thereby effectively improving the ease of use of the methanol engine.

[0071] Please refer to Figure 1, which is a schematic diagram of the structure of an embodiment of a methanol fuel supply system of the present application. This embodiment provides a methanol fuel supply system comprising a methanol fuel tank 20, a main methanol pump 30, a methanol heating filter 40 and / or a methanol heating tank 50, and a fuel rail injector assembly 60, which are sequentially connected by a main oil pipeline 10;

[0072] The methanol heating filter 40 and / or the methanol heating tank 50 are connected to the fuel rail injector assembly 60 through the auxiliary oil pipeline 80 via the auxiliary methanol pump 70 .

[0073] In this embodiment, it should be noted that the methanol fuel supply system may include only the methanol heating filter 40, only the methanol heating tank 50, or both the methanol heating filter 40 and the methanol heating tank 50. Because different methanol vehicles have different displacements and require different amounts of heat for warming up, the methanol fuel supply system may only include the methanol heating filter 40. For methanol vehicles requiring slightly higher amounts of heat for warming up, the methanol fuel supply system may only include the methanol heating tank 50 (it will be understood that the methanol fuel supply system will need to include a methanol filter without a heating function). For methanol vehicles requiring higher amounts of heat for warming up, the methanol fuel supply system may include both the methanol heating filter 40 and the methanol heating tank 50. Of course, it is understood that for methanol vehicles requiring slightly lower amounts of heat for warming up, the methanol fuel supply system may also include both the methanol heating filter 40 and the methanol heating tank 50 to improve the heating efficiency of the methanol fuel.

[0074] As an example, the methanol fuel supply system only includes a methanol heating filter 40, and the methanol fuel supply system includes a methanol fuel tank 20, a main methanol pump 30, a methanol heating filter 40 and a fuel rail injector assembly 60 connected in sequence by a main oil line pipeline 10; the methanol heating filter 40 is connected to the fuel rail injector assembly 60 through an auxiliary oil line pipeline 80 and an auxiliary methanol pump 70.

[0075] As another example, the methanol fuel supply system only includes a methanol heating tank 50, then the methanol fuel supply system includes a methanol fuel tank 20, a main methanol pump 30, a methanol heating tank 50 and a fuel rail injector assembly 60 connected in sequence by a main oil pipeline 10; the methanol heating tank 50 is connected to the fuel rail injector assembly 60 through an auxiliary oil pipeline 80 via an auxiliary methanol pump 70.

[0076] As another example, a methanol fuel supply system includes both a methanol heating filter 40 and a methanol heating tank 50. As shown in Figure 1, arrows indicate the flow direction of the methanol fuel, with the thick solid arrow representing the main fuel line 10 and the thin solid arrow representing the auxiliary fuel line 80. The methanol fuel supply system includes a methanol fuel tank 20, a main methanol pump 30, a methanol heating filter 40, a methanol heating tank 50, and a fuel rail injector assembly 60, which are sequentially connected by the main fuel line 10. The methanol heating tank 50 is connected to the fuel rail injector assembly 60 via the auxiliary fuel line 80 and the auxiliary methanol pump 70. Therefore, in this embodiment, under the cold start condition of the methanol engine, the main methanol pump 30 is started to extract methanol fuel from the methanol fuel tank 20 and pump it to the methanol heating filter 40. The methanol fuel is then filtered and preliminarily heated by the methanol heating filter 40 and transported to the methanol heating tank 50. The preliminarily heated methanol fuel is then heated again in the methanol heating tank 50 until the temperature of the methanol fuel inside the methanol heating tank 50 reaches the preset target temperature. The auxiliary methanol pump 70 is then started to pump the methanol fuel at the preset target temperature to the fuel rail injector assembly 60, which injects the methanol fuel into the methanol engine for combustion, thereby completing the warm-up of the methanol engine. It can be understood that the order of the methanol heating filter 40 and the methanol heating tank 50 can be swapped, that is, the methanol fuel supply system includes a methanol fuel tank 20, a main methanol pump 30, a methanol heating tank 50, a methanol heating filter 40 and a fuel rail injector assembly 60 connected in sequence by a main oil pipeline 10; the methanol heating filter 40 is connected to the fuel rail injector assembly 60 through an auxiliary oil pipeline 80 via an auxiliary methanol pump 70.

[0077] Referring to FIG2 , FIG2 is a schematic diagram of the structure of a methanol heating filter according to an embodiment of the present application. In some embodiments, the methanol heating filter 40 includes a filter housing 41 and a filter element 42;

[0078] The filter element 42 is disposed inside the filter housing 41 and divides the interior of the filter housing 41 into an outer filter cavity 411 and an inner filter cavity 412 .

[0079] A first oil inlet 43 is provided on the filter outer cavity 411 , and the first oil inlet 43 is connected to the main methanol pump 30 through a main oil pipeline 10 .

[0080] A first oil outlet 44 is provided on the inner filter cavity 412 , and the first oil outlet 44 is connected to the fuel rail injector assembly connection 60 .

[0081] The filter outer cavity 411 is provided with a first heating element 45 for heating the methanol fuel flowing through the methanol heating filter 40 .

[0082] In this embodiment, it should be noted that the first heating element 45 is an electric heating unit and can be made of ceramic material, carbon fiber material, or other safe and reliable heating materials. The number of electric heating units in the first heating element 45 can be determined based on the desired heating power, and the number of electric heating units required to operate can be selected based on the heating requirements.

[0083] As shown in FIG2 , the methanol heating filter 40 in this embodiment includes a filter housing 41 and a filter element 42. The filter element 42 is disposed within the filter housing 41 and divides the interior of the filter housing 41 into an outer filter chamber 411 and an inner filter chamber 412. The outer filter chamber 411 is provided with a first oil inlet 43, which is connected to the main methanol pump 30 via a main oil pipeline 10. The inner filter chamber 412 is provided with a first oil outlet 44, which is connected to the rail injector assembly 60. The outer filter chamber 411 is provided with a first heating element 45 for heating the methanol fuel flowing through the methanol heating filter 40. The methanol fuel enters the methanol heating filter 40 through the first oil inlet 43 on the outer filter chamber 411, undergoes preliminary heating by the first heating element 45, and is filtered by the filter element 42 before entering the inner filter chamber 412 and being discharged through the first oil outlet 44. In this embodiment, the methanol fuel flowing through the filter is filtered and heated by means of a methanol filter with a heating function (ie, the methanol heating filter 40 ).

[0084] In some embodiments, when the methanol fuel supply system only includes the methanol heating filter 40 , a second oil outlet 46 is further provided on the filter inner cavity 412 .

[0085] The first oil outlet 44 is connected to the fuel rail injector assembly 60 through the main oil pipeline 10 .

[0086] The second oil outlet 46 is connected to the fuel rail injector assembly 60 through the auxiliary oil pipeline 80 and the auxiliary methanol pump 70.

[0087] In addition, reference may also be made to FIG3 , which is a schematic structural diagram of a second embodiment of the methanol fuel supply system of the present application. The methanol fuel supply system further includes a first three-way valve 11 ; a first oil outlet 43 is connected to a first valve port of the first three-way valve 11 ; a second valve port of the first three-way valve 11 is connected to a fuel rail injector assembly 60 via a main fuel line 10 ; and a third valve port of the first three-way valve 11 is connected to the fuel rail injector assembly 60 via an auxiliary fuel line 80 through an auxiliary methanol pump 70 .

[0088] Therefore, the methanol heating filter 40 can be connected to the fuel rail injector assembly 60 through the main oil pipeline 10 and the auxiliary oil pipeline 80 respectively without setting up additional oil outlets.

[0089] In some embodiments, when the methanol fuel supply system includes a methanol heating filter 40 and a methanol heating tank 50, the first oil outlet 43 is connected to the fuel rail injector assembly 60 via the methanol heating tank 50. Thus, after being filtered and initially heated by the methanol heating filter 40, the methanol fuel is delivered through the first oil outlet 43 to the methanol heating tank 50 for further heating before being delivered to the fuel rail injector assembly 60 for injection.

[0090] Referring to Figure 4, which is a schematic diagram of the structure of a methanol heating tank according to an embodiment of the present application, in some embodiments, the methanol heating tank 50 includes a heating tank housing 51 and a second heating element 52. The heating tank housing 51 is provided with a second oil inlet 53, which is connected to the main methanol pump 30. The heating tank housing 51 is provided with a third oil outlet 54, which is connected to the fuel rail injector assembly 60. The second heating element 52 is disposed within the heating tank housing 51 and is used to heat the methanol fuel therein.

[0091] In this embodiment, it should be noted that the second heating element 52 is an electric heating unit and can be made of ceramic material, carbon fiber material, or other safe and reliable heating materials. The number of electric heating units in the second heating element 523 can be determined based on the desired heating power, and the number of electric heating units required to operate can be selected based on the heating requirements.

[0092] In this embodiment, it should be noted that the volume of the methanol heating tank 50 is determined based on the methanol consumption corresponding to the warm-up requirements of the methanol engine. In this embodiment, the combined volume of the methanol heating filter 40 and the methanol heating tank 50 can be designed based on the methanol consumption during the cold start and warm-up phases of the methanol engine, minimizing the amount of methanol required for heating and the amount of electricity required to heat the methanol fuel.

[0093] As shown in Figure 4, in this embodiment, the methanol heating tank 50 includes a heating tank housing 51 and a second heating element 52. The heating tank housing 51 is provided with a second oil inlet 53, which is connected to the main methanol pump 30. The heating tank housing 51 is provided with a third oil outlet 54, which is connected to the fuel rail injector assembly 60. The second heating element 52 is disposed within the heating tank housing 51 and is used to heat the methanol fuel within the heating tank housing 51. Thus, the methanol heating tank 50 can heat the methanol fuel contained therein via the second heating element 52 until the methanol fuel reaches a preset target temperature, which is a temperature at which a mixture of methanol fuel and air can ignite and burn. The methanol fuel can then be pumped by the auxiliary methanol pump 70 to the fuel rail injector assembly 60, which then injects the methanol fuel into the methanol engine for combustion, completing the methanol engine warm-up process.

[0094] In some embodiments, when the methanol fuel supply system includes only the methanol heating tank 50, reference may be made to FIG5 , which illustrates a schematic structural diagram of a third embodiment of the methanol fuel supply system of the present application. The heating tank housing 51 is further provided with a fourth oil outlet 55 ; the third oil outlet 54 is connected to the fuel rail injector assembly 60 via a main oil line 10 ; and the fourth oil outlet 22 is connected to the fuel rail injector assembly 60 via an auxiliary oil line 80 through an auxiliary methanol pump 70 .

[0095] In some embodiments, the methanol fuel supply system further includes a second three-way valve 12; the third oil outlet 51 is connected to the first valve port of the second three-way valve 12; the second valve port of the second three-way valve 12 is connected to the fuel rail injector assembly 60 via a main oil pipeline 10; the third valve port of the second three-way valve 12 is connected to the fuel rail injector assembly 60 via an auxiliary oil pipeline 80 and an auxiliary methanol pump 70.

[0096] In some embodiments, when the methanol fuel supply system includes a methanol heating filter 40 and a methanol heating tank 50, the second oil inlet 53 is connected to the main methanol pump 30 via the methanol heating filter 40. Thus, the methanol fuel pumped from the methanol fuel tank 20 by the main methanol pump 30 is filtered and preliminarily heated by the methanol heating filter 40 before flowing into the methanol heating tank 50 through the second oil inlet 53.

[0097] Referring to Figure 6 , which is a schematic diagram of the structure of a fourth embodiment of the methanol fuel supply system of the present application, in some embodiments, a fuel rail injector assembly 60 includes a fuel rail 61 and at least one injector 62 disposed on the fuel rail 61 ; the fuel rail 61 is also provided with a pressure sensor 63 and a temperature sensor 64 .

[0098] In this embodiment, the fuel rail injector assembly 60 includes a fuel rail 61 and at least one injector 62 disposed on the fuel rail 61; the fuel rail 61 is also provided with a pressure sensor 63 and a temperature sensor 64, which can facilitate detection of the fuel pressure and fuel temperature of the fuel rail.

[0099] In some embodiments, an electromagnetic on-off valve 13 is provided on the main oil pipeline 10 between the main methanol pump 30 and the methanol heating filter 40 .

[0100] In this embodiment, an electromagnetic on-off valve 13 is provided on the main oil pipeline 10 between the main methanol pump 30 and the methanol heating filter 40. The electromagnetic on-off valve 13 is used to disconnect the main oil pipeline 10 when the auxiliary methanol pump 70 is working, so as to prevent the unheated methanol fuel from being extracted from the main oil pipeline 10 by the auxiliary methanol pump 70, thereby causing the heated methanol fuel to cool down after being mixed in.

[0101] In some embodiments, a main oil circuit one-way valve 14 is provided on the main oil circuit pipeline 10 between the methanol heating tank 50 and the fuel rail injector assembly 60 to prevent the fuel rail injector assembly 60 from returning oil to the methanol heating tank 50 .

[0102] In this embodiment, a main oil circuit one-way valve 14 is provided on the main oil circuit pipeline 10 between the methanol heating tank 50 and the fuel rail injector assembly 60. The main oil circuit one-way valve 14 is a one-way valve that opens in the direction of the fuel rail injector assembly 60 and is used to prevent the fuel rail injector assembly 60 from returning oil to the methanol heating tank 50.

[0103] In addition, as shown in Figure 6 , a first pressure regulating valve 15 is provided in parallel on the main oil pipeline 10 between the main methanol pump 30 and the electromagnetic on-off valve 13 for regulating the fuel pressure in the main oil pipeline 10. Similarly, a second pressure regulating valve 16 is provided in parallel on the auxiliary oil pipeline 80 between the auxiliary methanol pump 70 and the fuel rail injector assembly 60 for regulating the fuel pressure in the auxiliary oil pipeline 80. An oil suction filter 21 is provided at one end of the main oil pipeline 10 connected to the methanol fuel tank 20 for filtering the oil suctioned by the main methanol pump 30. As shown in Figure 6 , where the dotted line represents a conductor, the methanol fuel supply system also includes a heating controller for controlling and energizing the first heating element 45 and the second heating element 52 via the conductor.

[0104] The first embodiment of the present application proposes a methanol fuel supply system, which includes a methanol fuel tank, a main methanol pump, a methanol heating filter and / or a methanol heating tank, and a fuel rail injector assembly, which are connected in sequence by a main oil pipeline. The methanol heating filter and / or the methanol heating tank are connected to the fuel rail injector assembly via an auxiliary oil pipeline via an auxiliary methanol pump. Thus, the present application can rapidly heat a small amount of methanol fuel in a low-temperature environment using a methanol heating filter and / or a methanol heating tank with a heating function. When the temperature of the methanol fuel reaches a preset target temperature, the auxiliary methanol pump in the auxiliary oil pipeline operates to eject the heated methanol fuel through the fuel rail injector assembly, allowing the methanol engine to achieve a cold start using the high-temperature methanol fuel and complete warm-up. The present application can complete a cold start of a methanol engine without the aid of gasoline, eliminating the need for an additional gasoline fuel supply system. Users do not need to refill their vehicles with gasoline, thereby effectively improving the ease of use of the methanol engine.

[0105] See FIG. 7 , which is a flow chart of an embodiment of a method for controlling a methanol fuel supply system according to the present application.

[0106] An embodiment of the present application provides a control method for a methanol fuel supply system, which is applied to the above-mentioned methanol fuel supply system. The control method includes:

[0107] Step S100, when the methanol engine is in a cold start condition, starting the main methanol pump for a preset pumping time to pump methanol fuel from the methanol fuel tank to the methanol heating filter and / or the methanol heating tank;

[0108] Step S200, starting the first heating element of the methanol heating filter and / or the second heating element in the methanol heating tank until the temperature of the methanol fuel reaches a preset target temperature;

[0109] Step S300 , starting the auxiliary methanol pump to pump methanol fuel at a preset target temperature to the fuel rail injector, so that the fuel rail injector injects the methanol fuel into the methanol engine.

[0110] In this embodiment, it should be noted that the methanol fuel supply system may include only a methanol heating filter, only a methanol heating tank, or both a methanol heating filter and a methanol heating tank. Because different methanol vehicles have different displacements and require different amounts of heat for warm-up, the methanol fuel supply system may only include a methanol heating filter. For methanol vehicles requiring slightly higher amounts of heat for warm-up, the methanol fuel supply system may only include a methanol heating tank (it will be understood that the methanol fuel supply system will need to include a methanol filter without a heating function). For methanol vehicles requiring higher amounts of heat for warm-up, the methanol fuel supply system may include both a methanol heating filter and a methanol heating tank. Of course, it is understood that for methanol vehicles requiring slightly lower amounts of heat for warm-up, the methanol fuel supply system may also include both a methanol heating filter and a methanol heating tank to improve the heating efficiency of the methanol fuel.

[0111] In one embodiment, when the methanol engine is in a cold start condition (i.e., the current water temperature of the methanol engine is below a preset low-temperature threshold), the main methanol pump is activated for a preset pumping duration to pump methanol fuel from the methanol fuel tank to the methanol heating filter. The preset pumping duration can be a fixed, pre-set duration or a duration determined based on the current water temperature of the methanol engine. The first heating element of the methanol heating filter is then activated, thereby heating the methanol fuel while filtering it until the temperature of the methanol fuel reaches a preset target temperature, where the preset target temperature is a temperature at which a mixture of methanol fuel and air can ignite and burn. At this point, the auxiliary methanol pump is activated to pump the methanol fuel at the preset target temperature to the fuel rail injector, which then injects the methanol fuel into the methanol engine for combustion, thereby completing the methanol engine warm-up process.

[0112] In one embodiment, when the methanol engine is in a cold start condition, the main methanol pump can be activated for a preset pumping time to pump methanol fuel from the methanol fuel tank to the methanol heating tank. The second heating element of the methanol heating tank is then activated to heat the methanol fuel in the methanol heating tank until the temperature of the methanol fuel reaches a preset target temperature. At this point, the auxiliary methanol pump can be activated to pump the methanol fuel at the preset target temperature to the fuel rail injector, which then injects the methanol fuel into the methanol engine for combustion, thereby completing the methanol engine warm-up process.

[0113] In one embodiment, when the methanol engine is in a cold start condition, the main methanol pump can be activated for a preset pumping time to pump methanol fuel from the methanol fuel tank to the methanol heating filter. The first heating element of the methanol heating filter is then activated, thereby preliminarily heating the methanol fuel while filtering it. The filtered and preliminarily heated methanol fuel is then transferred to the methanol heating tank. The second heating element of the methanol heating tank is then activated, thereby further heating the methanol fuel in the methanol heating tank until the temperature of the methanol fuel reaches a preset target temperature. At this point, the auxiliary methanol pump can be activated to pump the methanol fuel at the preset target temperature to the fuel rail injector, which then injects the methanol fuel into the methanol engine for combustion, thereby completing the warm-up of the methanol engine.

[0114] In some embodiments, after the step of starting the auxiliary methanol pump to pump methanol fuel at a preset target temperature to the fuel rail injector in step S300, the following steps are included:

[0115] Step S400, obtaining the real-time water temperature of the methanol engine;

[0116] Step S500: After the real-time water temperature is higher than the preset operating temperature, the auxiliary methanol pump, the first heating element and the second heating element are turned off, and the main methanol pump is started.

[0117] In this embodiment, the real-time water temperature of the methanol engine can be collected by a temperature sensor in the engine water tank of the methanol engine. When the real-time water temperature exceeds a preset operating temperature, indicating that the methanol engine warm-up is complete, the auxiliary methanol pump, the first heating element, and the second heating element can be shut down, and the main methanol pump can be started, thereby resuming methanol fuel supply under normal operating conditions.

[0118] In some embodiments, before the step of starting the main methanol pump to preset the pumping time in step S100, the method includes:

[0119] Step A10, obtaining a mapping table of the current water temperature and pumping duration of the methanol engine, wherein the water temperature-duration mapping table includes a mapping relationship between the engine water temperature and the pumping duration, and the pumping duration is negatively correlated with the engine water temperature;

[0120] Step A20: query the water temperature-duration mapping table according to the current water temperature to obtain a preset pumping duration corresponding to the current water temperature.

[0121] In this embodiment, it should be noted that the water temperature-time mapping table includes a mapping relationship between the engine water temperature and the pumping time, the pumping time is negatively correlated with the engine water temperature, and the lower the engine water temperature, the longer the pumping time, and the greater the amount of methanol that needs to be heated by the methanol heating filter and / or the methanol heating tank.

[0122] Because the methanol engine's warm-up heat requirement varies under different temperature conditions, this embodiment obtains a mapping table of the methanol engine's current water temperature and pumping duration. The mapping table includes a mapping relationship between engine water temperature and pumping duration, with the pumping duration being negatively correlated with the engine water temperature. Based on the current water temperature, the table is queried to obtain the preset pumping duration corresponding to the current water temperature. This ensures that the methanol fuel to be heated matches the current water temperature of the methanol engine, improving heating efficiency and reducing the consumption of methanol fuel and the electrical energy required for heating.

[0123] An embodiment of the present application provides a method for controlling a methanol fuel supply system. When a methanol engine is in a cold start condition, the main methanol pump is activated for a preset pumping time, so that methanol fuel is pumped from the methanol fuel tank to the methanol heating filter and / or the methanol heating tank; the first heating element of the methanol heating filter and / or the second heating element in the methanol heating tank are activated until the temperature of the methanol fuel reaches a preset target temperature; and the auxiliary methanol pump is activated to pump the methanol fuel at the preset target temperature to the fuel rail injector, so that the fuel rail injector injects the methanol fuel into the methanol engine. Thus, the present application can rapidly heat a small amount of methanol fuel in a low-temperature environment using a methanol heating filter and / or a methanol heating tank with a heating function. When the temperature of the methanol fuel reaches the preset target temperature, the auxiliary methanol pump in the auxiliary fuel line is activated, allowing the methanol engine to achieve a cold start using the high-temperature methanol fuel and complete the warm-up of the methanol engine. The present application can complete a cold start of a methanol engine without the use of gasoline, eliminating the need for an additional gasoline fuel supply system and eliminating the need for users to refill their vehicles with gasoline, thereby effectively improving the ease of use of the methanol engine.

[0124] As shown in Figure 8, Figure 8 is a schematic diagram of the device structure of the hardware operating environment involved in the embodiment of the present application. The embodiment of the present application also provides a control device for a methanol fuel supply system for implementing the control method of the methanol fuel supply system.

[0125] The control device of the methanol fuel supply system may be a VCU (Vehicle Control Unit), an ECU (Electronic Control Unit), a PDA (Personal Digital Assistant), a PC (Personal Computer), a server, or other equipment.

[0126] As shown in Figure 8 , the control device of the methanol fuel supply system may include: a processor 1001, such as a central processing unit (CPU), a communication bus 1002, a user interface 1003, a network interface 1004, and memory 1005. Communication bus 1002 is used to enable communication between these components. User interface 1003 may include a display and an input unit, such as a keyboard. User interface 1003 may also include a standard wired interface or a wireless interface. Network interface 1004 may include a standard wired interface or a wireless interface (such as a wireless fidelity (WI-FI) interface). Memory 1005 may be a high-speed random access memory (RAM) or a stable non-volatile memory (NVM), such as a disk drive. Memory 1005 may also be a storage device independent of processor 1001.

[0127] Those skilled in the art will understand that the device structure shown in FIG8 does not constitute a limitation on the control device of the methanol fuel supply system, and may include more or fewer components than shown in the figure, or a combination of certain components, or a different arrangement of components.

[0128] As shown in FIG8 , the memory 1005 as a computer storage medium may include an operating system, a network communication module, a user interface module, and a control application program for the methanol fuel supply system.

[0129] In the device shown in Figure 8, the network interface 1004 is mainly used to connect to the backend server and communicate data with the backend server; the user interface 1003 is mainly used to connect to the client and communicate data with the client; and the processor 1001 can be used to call the computer program stored in the memory 1005 to implement the operations in the control method of the methanol fuel supply system provided in the above embodiment.

[0130] In addition, an embodiment of the present application also proposes a computer storage medium, on which a computer program is stored. When the computer program is executed by a processor, the operations in the control method of the methanol fuel supply system provided in the above embodiment are implemented. The specific steps are not repeated here.

[0131] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity / operation / object from another entity / operation / object, and do not necessarily require or imply any actual relationship or order between these entities / operations / objects; the terms "include", "comprise", or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or system that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or system. In the absence of further limitations, an element defined by the phrase "includes a ..." does not exclude the presence of other identical elements in the process, method, article, or system that includes the element.

[0132] As for the device embodiment, since it is basically similar to the method embodiment, the description is relatively simple. For relevant details, please refer to the partial description of the method embodiment. The device embodiment described above is merely illustrative, and the units described as separate components may or may not be physically separated. Some or all of the modules can be selected according to actual needs to achieve the purpose of the present application scheme. Those of ordinary skill in the art can understand and implement it without paying any creative work.

[0133] The serial numbers of the above embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.

[0134] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus the necessary general hardware platform, and of course can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) as described above, and includes a number of instructions for enabling a terminal device (which can be a mobile phone, computer, server, or network device, etc.) to execute the methods described in each embodiment of the present application.

[0135] The above are merely embodiments of the present application and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A methanol fuel supply system, wherein: The methanol fuel supply system includes a methanol fuel tank, a main methanol pump, a methanol heating filter and / or a methanol heating tank, and a fuel rail injector assembly which are sequentially connected by a main oil pipeline; The methanol heating filter and / or the methanol heating tank are connected to the fuel rail injector assembly through an auxiliary oil pipeline via an auxiliary methanol pump.

2. The methanol fuel supply system according to claim 1, wherein: The methanol heating filter comprises a filter housing and a filter element; The filter element is arranged inside the filter housing, and divides the interior of the filter housing into an outer filter cavity and an inner filter cavity; The filter outer cavity is provided with a first oil inlet, and the first oil inlet is connected to the main methanol pump through a main oil pipeline; The filter inner cavity is provided with a first oil outlet, and the first oil outlet is connected to the fuel rail injector assembly; The filter outer cavity is provided with a first heating element for heating the methanol fuel flowing through the methanol heating filter.

3. The methanol fuel supply system according to claim 2, wherein: A second oil outlet is also provided on the inner filter cavity; The first oil outlet is connected to the oil rail injector assembly via a main oil pipeline; The second oil outlet is connected to the fuel rail injector assembly through the auxiliary oil pipeline and the auxiliary methanol pump.

4. The methanol fuel supply system according to claim 2, wherein: The first oil outlet is connected to the first valve port of the first three-way valve; The second valve port of the first three-way valve is connected to the fuel rail injector assembly through a main oil pipeline; The third valve port of the first three-way valve is connected to the fuel rail injector assembly through the auxiliary oil pipeline and the auxiliary methanol pump.

5. The methanol fuel supply system according to claim 2, wherein: The first oil outlet is connected to the oil rail injector assembly through the methanol heating tank.

6. The methanol fuel supply system according to claim 1, wherein: The methanol heating tank comprises a heating tank shell and a second heating element; The heating tank shell is provided with a second oil inlet, and the second oil inlet is connected to the main methanol pump; The heating tank shell is provided with a third oil outlet, and the third oil outlet is connected to the oil rail injector assembly; The second heating element is arranged inside the heating tank shell and is used to heat the methanol fuel inside the heating tank shell.

7. The methanol fuel supply system according to claim 6, wherein: The heating tank shell is also provided with a fourth oil outlet; The third oil outlet is connected to the oil rail injector assembly through the main oil pipeline; The fourth oil outlet is connected to the fuel rail injector assembly through the auxiliary oil pipeline and the auxiliary methanol pump.

8. The methanol fuel supply system according to claim 6, wherein: The third oil outlet is connected to the first valve port of the second three-way valve; The second valve port of the second three-way valve is connected to the fuel rail injector assembly through a main oil pipeline; The third valve port of the second three-way valve is connected to the fuel rail injector assembly through the auxiliary oil pipeline and the auxiliary methanol pump.

9. The methanol fuel supply system according to claim 6, wherein: The second oil inlet is connected to the main methanol pump through the methanol heating filter.

10. The methanol fuel supply system according to claim 1, wherein: The fuel rail injector assembly includes a fuel rail and at least one injector arranged on the fuel rail; The oil rail is also provided with a pressure sensor and a temperature sensor.

11. The methanol fuel supply system according to claim 1, wherein: An electromagnetic on-off valve is provided on the main oil pipeline between the main methanol pump and the methanol heating filter.

12. The methanol fuel supply system according to claim 1, wherein: A main oil circuit one-way valve is provided on the main oil circuit pipeline between the methanol heating tank and the fuel rail injector assembly, for preventing the fuel rail injector assembly from returning oil to the methanol heating tank.

13. A method for controlling a methanol fuel supply system, applied to the methanol fuel supply system according to any one of claims 1 to 12, wherein: The control method includes: When the methanol engine is in a cold start condition, starting the main methanol pump for a preset pumping time so that methanol fuel is pumped from the methanol fuel tank to the methanol heating filter and / or the methanol heating tank; Starting the first heating element of the methanol heating filter and / or the second heating element in the methanol heating tank until the temperature of the methanol fuel reaches a preset target temperature; The auxiliary methanol pump is started to pump the methanol fuel at a preset target temperature to the fuel rail injector, so that the fuel rail injector injects the methanol fuel into the methanol engine.

14. The control method according to claim 13, wherein: After the step of starting the auxiliary methanol pump to pump the methanol fuel at a preset target temperature to the fuel rail injector, the control method includes: Obtaining the real-time water temperature of the methanol engine; After the real-time water temperature is higher than the preset operating temperature, the auxiliary methanol pump, the first heating element and the second heating element are turned off, and the main methanol pump is started.

15. The control method according to claim 13, wherein: Before the step of starting the main methanol pump for a preset pumping time, the control method includes: Obtaining a mapping table of the current water temperature and pumping duration of the methanol engine, wherein the water temperature-duration mapping table includes a mapping relationship between the engine water temperature and the pumping duration, and the pumping duration is negatively correlated with the engine water temperature; According to the current water temperature, the water temperature-duration mapping table is queried to obtain the preset pumping duration corresponding to the current water temperature.

16. A control device for a methanol fuel supply system, wherein: The control device of the methanol fuel supply system includes: a memory and a processor, wherein the memory stores a computer program that can be run on the processor, and when the computer program is executed by the processor, the steps of the control method of the methanol fuel supply system as described in any one of claims 13 to 15 are implemented.

17. A computer-readable storage medium, wherein: The computer-readable storage medium stores a computer program, which, when executed by a processor, implements the steps of the method for controlling the methanol fuel supply system according to any one of claims 13 to 15.

18. A computer program product, wherein The computer program product includes a computer program, and when the computer program is executed by a processor, the steps of the method for controlling the methanol fuel supply system according to any one of claims 13 to 15 are implemented.

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