Diagnostic method, system, electronic device and storage medium for an oil tank assembly

Abstract

The application provides a diagnosis method and system of an oil tank assembly, an electronic device and a storage medium. The oil tank assembly comprises an oil tank and a sorption tank. The method comprises the following steps: connecting the oil tank and the sorption tank by using a gating module, so as to perform a leakage diagnosis on the oil tank assembly by using a pressure detection module, and obtaining a leakage diagnosis result. The leakage diagnosis result is used to indicate whether the oil tank and the sorption tank leak. The gating module is used to isolate the oil tank and the sorption tank, so as to perform a desorption diagnosis on the sorption tank by using the pressure detection module, and obtaining a desorption diagnosis result. The desorption diagnosis result is used to indicate whether the sorption tank desorbs. The diagnosis process is simple and the cost is low.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fuel supply, leakage diagnosis, and desorption diagnosis, and in particular to a diagnosis method and system for a fuel tank assembly, an electronic device, and a storage medium. BACKGROUND

[0002] Fuel supply refers to supplying combustible mixture to a driving mechanism (or driving component or driving device), such as an engine. Due to the difference in fuel, the supply method may be different. For example, gasoline supply is to prepare a certain amount and concentration of mixture according to the requirements of the engine and supply it into the cylinder.

[0003] The existing diagnosis method for the fuel supply system is relatively complex. Therefore, the present application provides a diagnosis method and system for a fuel tank assembly, an electronic device, and a storage medium to improve the prior art. SUMMARY

[0004] The present application aims to provide a diagnosis method and system for a fuel tank assembly, an electronic device, and a storage medium, which are simple in diagnosis process and low in cost.

[0005] The present application achieves the above-mentioned purpose by adopting the following technical solutions:

[0006] In a first aspect, the present application provides a diagnosis method for a fuel tank assembly, the fuel tank assembly comprising a fuel tank and an adsorption tank, and the method comprising:

[0007] communicating the fuel tank and the adsorption tank by using the gating module to perform leakage diagnosis on the fuel tank assembly by using the pressure detection module, and obtaining a leakage diagnosis result, the leakage diagnosis result being used to indicate whether the fuel tank and the adsorption tank have leaked;

[0008] isolating the fuel tank and the adsorption tank by using the gating module to perform desorption diagnosis on the adsorption tank by using the pressure detection module, and obtaining a desorption diagnosis result, the desorption diagnosis result being used to indicate whether the adsorption tank has desorbed.

[0009] The technical solution has the advantages of simple diagnosis process and low cost.

[0010] Firstly, the oil tank and the adsorption tank are connected by the gating module so that the pressures inside the oil tank and the adsorption tank are the same (no pressure difference), and thus the oil tank assembly (or the oil tank and the adsorption tank as a whole) can be subjected to leakage diagnosis by the pressure detection module to obtain a leakage diagnosis result, which indicates whether the oil tank and the adsorption tank as a whole leak (compared with diagnosing whether the oil tank and the adsorption tank leak separately), that is, when the oil tank and / or the adsorption tank leak, the leakage diagnosis result indicates that leakage occurs, and only when neither the oil tank nor the adsorption tank leaks, the leakage diagnosis result indicates that no leakage occurs. In addition, the oil tank and the adsorption tank can be isolated by the gating module, so that the same pressure detection module can be used for desorption diagnosis of the adsorption tank, and the obtained desorption diagnosis result is used to indicate whether the adsorption tank leaks.

[0011] The above method can selectively connect or isolate the oil tank and the adsorption tank by the gating module, so that the same pressure detection module is used for leakage diagnosis and desorption diagnosis, and the diagnosis process is simple. The object of the leakage diagnosis is the oil tank and the adsorption tank as a whole, and the object of the desorption diagnosis is the adsorption tank. The leakage diagnosis process and the desorption diagnosis process share one pressure detection module, which can reduce the hardware cost compared with setting pressure detection modules for the two diagnosis processes respectively. In addition, the combination of the gating module and the pressure detection module reduces the number of hardware, and overall reduces the complexity of the hardware. Moreover, users can select appropriate gating modules and pressure detection modules according to the performance and cost requirements in actual applications, and the application range is wide.

[0012] In some optional embodiments, the process of diagnosing the oil tank assembly for leakage by the pressure detection module includes:

[0013] After controlling the oil tank assembly to be in a positive pressure environment or a negative pressure environment, all switches between the oil tank assembly and the outside are closed;

[0014] At the first time and the second time, the first pressure and the second pressure of the oil tank assembly are detected by the pressure detection module, respectively;

[0015] When the first pressure and the second pressure satisfy a first preset pressure condition, it is determined that the leakage diagnosis result indicates that the oil tank and the adsorption tank do not leak;

[0016] When the first pressure and the second pressure do not satisfy the first preset pressure condition, it is determined that the leakage diagnosis result indicates that the oil tank and the adsorption tank leak.

[0017] The beneficial effects of the technical solution are that, under the premise of connecting the oil tank and the adsorption tank, the pressure of the oil tank assembly (internally) is the same everywhere, and the oil tank assembly can be diagnosed for leakage. Specifically, after the oil tank assembly is in a positive pressure environment or a negative pressure environment, all switches between the oil tank assembly and the outside are closed; at a first time, a first pressure of the oil tank assembly is detected by the pressure detection module, and at a second time, a second pressure of the oil tank assembly is detected by the pressure detection module, the second time being a time after the first time, and the interval between the two times can be, for example, a first preset time threshold, which can be, for example, 5 seconds, 10 seconds, 30 seconds, 1 minute, 2 minutes, or 5 minutes, etc.; after the first pressure and the second pressure are obtained, it can be detected whether the first preset pressure condition is met, the first preset pressure condition being pre-set, which can be, for example, manually set or intelligently set, wherein the first preset pressure condition can be, for example, that the absolute value of the difference between the first pressure and the second pressure is not greater than a first preset pressure threshold, or the first preset pressure condition can be, for example, that the ratio of the absolute value of the difference between the first pressure and the second pressure to the first pressure is not greater than a first preset ratio threshold; when it is detected that the first preset pressure condition is met, it is confirmed that neither the oil tank nor the adsorption tank has leaked, that is, the oil tank has not leaked and the adsorption tank has not leaked; when it is detected that the first preset pressure condition is not met, it is confirmed that the oil tank and the adsorption tank as a whole have leaked, and whether the oil tank or the adsorption tank has leaked or both have leaked needs to be further detected. That is, after the oil tank and the adsorption tank are connected by the gating module, the pressure change of the oil tank assembly can be detected by the above leakage detection process to obtain a leakage diagnosis result.

[0018] In some optional embodiments, the process of controlling the oil tank assembly to be in a negative pressure environment includes:

[0019] Connecting the adsorption tank and the engine to create a negative pressure environment using the engine.

[0020] The beneficial effects of the technical solution are that, by using the (existing or ready) engine to run, the mixed gas from the oil tank assembly enters the engine to create a negative pressure environment for the oil tank assembly (or the oil tank and the adsorption tank), which can reduce the hardware cost compared to additional pressure adjustment equipment such as a gas pump, and can expand the function of the engine, because the engine functions as a pressure adjustment device at this time. The way of connecting the adsorption tank and the engine can be, for example, opening the desorption valve between the adsorption tank and the engine.

[0021] In some optional embodiments, the process of controlling the oil tank assembly to be in a positive pressure environment includes:

[0022] Connecting the adsorption tank and the outside atmosphere to create a positive pressure environment using a gas pump;

[0023] The gas pump is arranged between the adsorption tank and the external atmosphere, or the gas pump is arranged between the oil tank and the adsorption tank.

[0024] The beneficial effects of the technical solution are that the adsorption tank and the external atmosphere are connected, the gas pump is used to pump air to the oil tank assembly, external air enters the adsorption tank and the oil tank, and a positive pressure environment of the oil tank assembly (or the oil tank and the adsorption tank) is created. The gas pump can be arranged between the adsorption tank and the external atmosphere or between the oil tank and the adsorption tank. The user can set the installation position of the gas pump according to the requirements in actual application, and the effect of creating a positive pressure environment can be achieved, which has high flexibility. The way of connecting the adsorption tank and the external atmosphere may, for example, be to open the ventilation valve between the adsorption tank and the external atmosphere.

[0025] In some optional embodiments, the process of using the pressure detection module to perform the desorption diagnosis on the adsorption tank includes:

[0026] When the engine is in an idle operating condition, the adsorption tank and the engine are connected;

[0027] At the third time and the fourth time, the third pressure and the fourth pressure of the adsorption tank are respectively detected by using the pressure detection module;

[0028] When the third pressure and the fourth pressure satisfy a second preset pressure condition, it is determined that the desorption diagnosis result is used to indicate that the adsorption tank has desorbed;

[0029] When the third pressure and the fourth pressure do not satisfy the second preset pressure condition, it is determined that the desorption diagnosis result is used to indicate that the adsorption tank has not desorbed.

[0030] The beneficial effects of the technical scheme are that, under the premise of isolating the oil tank and the adsorption tank, the adsorption tank can be subjected to desorption diagnosis. Specifically, under the condition that the engine is in an idle operating condition, the adsorption tank and the engine need to be connected to use the engine to realize the desorption process of the adsorption tank; the third pressure of the adsorption tank is detected by using the pressure detection module at the third time, and the fourth pressure of the adsorption tank is detected by using the pressure detection module at the fourth time, the fourth time being a time after the third time, and the interval between the two times can be, for example, a second preset time threshold, which can be, for example, 5 seconds, 10 seconds, 30 seconds, 1 minute, 2 minutes or 5 minutes, etc.; after the third pressure and the fourth pressure are obtained, it can be detected whether the second preset pressure condition is met, the second preset pressure condition being pre-set, which can be, for example, manually set or intelligently set, wherein the second preset pressure condition can be, for example, that the absolute value of the difference between the third pressure and the fourth pressure is not less than a second preset pressure threshold, or the second preset pressure condition can be, for example, that the ratio of the absolute value of the difference between the third pressure and the fourth pressure to the third pressure is not less than a second preset ratio threshold; when it is detected that the second preset pressure condition is met, it is confirmed that the adsorption tank is desorbed (i.e., there is a desorption flow); when it is detected that the second preset pressure condition is not met, it is confirmed that the adsorption tank is not desorbed (i.e., there is no desorption flow). That is, after the oil tank and the adsorption tank are isolated by using the gating module, the pressure change of the adsorption tank in the desorption process can be detected to obtain a desorption diagnosis result, and it can be confirmed whether there is a desorption flow.

[0031] In some optional embodiments, the method further comprises:

[0032] communicating the oil tank and the adsorption tank by using the gating module;

[0033] detecting the real-time pressure of the oil tank by using the pressure detection module;

[0034] when the real-time pressure is less than a preset refueling pressure threshold, opening a refueling switch of the oil tank to perform a refueling operation on the oil tank;

[0035] when it is detected that the refueling switch is closed, isolating the oil tank and the adsorption tank by using the gating module.

[0036] The beneficial effects of the technical scheme are that the oiling process is intelligently controlled, specifically, after the oil tank and the adsorption tank are connected by the gating module, the real-time pressure of the oil tank is detected by the pressure detection module, when the real-time pressure is less than the preset oiling pressure threshold, it is confirmed that the oiling condition is met, and the oiling switch of the oil tank is automatically opened, so that the user or the oiling personnel of the gas station can perform the oiling operation on the oil tank; when the oiling switch is automatically closed or manually closed (at this time, the oiling switch is detected to be closed), the oil tank and the adsorption tank are isolated by the gating module, and if necessary, the real-time pressure of the oil tank can be detected by the pressure detection module to ensure the safety of the oil tank.

[0037] In a second aspect, the present application provides an electronic device for diagnosing an oil tank assembly, the oil tank assembly comprising an oil tank and an adsorption tank, the electronic device comprising a memory and at least one processor, the memory storing a computer program, and the at least one processor implementing the following steps when executing the computer program:

[0038] The gating module is used to connect the oil tank and the adsorption tank, so that the pressure detection module is used to diagnose the oil tank assembly for leakage to obtain a leakage diagnosis result, and the leakage diagnosis result is used to indicate whether the oil tank and the adsorption tank have leaked;

[0039] The gating module is used to isolate the oil tank and the adsorption tank, so that the pressure detection module is used to diagnose the adsorption tank for desorption to obtain a desorption diagnosis result, and the desorption diagnosis result is used to indicate whether the adsorption tank has desorbed.

[0040] In some optional embodiments, the at least one processor executes the computer program to use the pressure detection module to diagnose the oil tank assembly for leakage in the following manner:

[0041] After controlling the oil tank assembly to be in a positive pressure environment or a negative pressure environment, all switches between the oil tank assembly and the outside are closed;

[0042] At a first time and a second time, the first pressure and the second pressure of the oil tank assembly are respectively detected by the pressure detection module;

[0043] When the first pressure and the second pressure meet a first preset pressure condition, it is determined that the leakage diagnosis result is used to indicate that the oil tank and the adsorption tank have not leaked;

[0044] When the first pressure and the second pressure do not meet the first preset pressure condition, it is determined that the leakage diagnosis result is used to indicate that the oil tank and the adsorption tank have leaked.

[0045] In some alternative embodiments, the at least one processor, when executing the computer program, controls the oil tank assembly to be in a negative pressure environment in the following manner:

[0046] The adsorption tank is connected to the engine to create the negative pressure environment by using the engine.

[0047] In some alternative embodiments, the at least one processor, when executing the computer program, controls the oil tank assembly to be in a positive pressure environment in the following manner:

[0048] The adsorption tank is connected to the external atmosphere to create the positive pressure environment by using a gas pump;

[0049] The gas pump is arranged between the adsorption tank and the external atmosphere, or the gas pump is arranged between the oil tank and the adsorption tank.

[0050] In some alternative embodiments, the at least one processor, when executing the computer program, uses the pressure detection module to perform a desorption diagnosis on the adsorption tank in the following manner:

[0051] When the engine is in an idle operating condition, the adsorption tank is connected to the engine;

[0052] At a third time and a fourth time, a third pressure and a fourth pressure of the adsorption tank are respectively detected by using the pressure detection module;

[0053] When the third pressure and the fourth pressure satisfy a second preset pressure condition, it is determined that the desorption diagnosis result indicates that the adsorption tank has desorbed;

[0054] When the third pressure and the fourth pressure do not satisfy the second preset pressure condition, it is determined that the desorption diagnosis result indicates that the adsorption tank has not desorbed.

[0055] In some alternative embodiments, the at least one processor, when executing the computer program, further implements the following steps:

[0056] The oil tank and the adsorption tank are connected by using the gating module;

[0057] The real-time pressure of the oil tank is detected by using the pressure detection module;

[0058] When the real-time pressure is less than a preset refueling pressure threshold, a refueling switch of the oil tank is opened to perform a refueling operation on the oil tank;

[0059] When it is detected that the refueling switch is closed, the oil tank and the adsorption tank are isolated by using the gating module.

[0060] In a third aspect, the present application provides a diagnosis system of an oil tank assembly, the oil tank assembly comprising an oil tank and an adsorption tank, the diagnosis system comprising:

[0061] The electronic device described above;

[0062] A gating module for selectively connecting or isolating the oil tank and the adsorption tank;

[0063] A pressure detection module for detecting pressure.

[0064] In some optional embodiments, the gating module adopts a multi-way valve, and the pressure detection module adopts a pressure sensor;

[0065] When the multi-way valve is in a first state, the multi-way valve is used to connect the oil tank and the adsorption tank, and the pressure sensor is used to detect the pressure of the oil tank assembly;

[0066] When the multi-way valve is in a second state, the multi-way valve is used to isolate the oil tank and the adsorption tank, and the pressure sensor is used to detect the pressure of the adsorption tank.

[0067] In some optional embodiments, when the multi-way valve is in a third state, the multi-way valve is used to isolate the oil tank and the adsorption tank, and the pressure sensor is used to detect the pressure of the oil tank.

[0068] In some optional embodiments, when the multi-way valve is in a first position, it is confirmed that the multi-way valve is in the first state; when the multi-way valve is in a second position, it is confirmed that the multi-way valve is in the second state; and when the multi-way valve is in a third position, it is confirmed that the multi-way valve is in the third state.

[0069] In some optional embodiments, the first position and the third position are arranged on both sides of the second position.

[0070] In some optional embodiments, the diagnosis system further comprises a driving assembly for driving the multi-way valve to switch among the first position, the second position and the third position.

[0071] In some optional embodiments, the driving mode of the driving assembly is electric, pneumatic or hydraulic.

[0072] In some optional embodiments, when the multi-way valve is in the first position, the first end of the multi-way valve is connected to the oil tank, the second end of the multi-way valve is connected to the adsorption tank, and the third end of the multi-way valve is connected to the pressure sensor; when the multi-way valve is in the second position, the fourth end of the multi-way valve is connected to the pressure sensor, and the fifth end of the multi-way valve is connected to the adsorption tank; when the multi-way valve is in the third position, the sixth end of the multi-way valve is connected to the oil tank, and the seventh end of the multi-way valve is connected to the pressure sensor.

[0073] In some optional embodiments, the multi-way valve further comprises eighth to twelfth ends which are normally closed, the first end and the second end of the multi-way valve are oppositely arranged, the eighth end and the third end of the multi-way valve are oppositely arranged, the ninth end and the fifth end of the multi-way valve are oppositely arranged, the fourth end and the tenth end of the multi-way valve are oppositely arranged, the sixth end and the twelfth end of the multi-way valve are oppositely arranged, and the eleventh end and the seventh end of the multi-way valve are oppositely arranged.

[0074] In a fourth aspect, the present application provides an automobile diagnosis system, which comprises the diagnosis system of any one of the above oil tank assemblies.

[0075] In a fifth aspect, the present application provides an automobile, which comprises the automobile diagnosis system of any one of the above and a fuel supply system, the fuel supply system comprising an oil tank assembly, the oil tank assembly comprising an oil tank and an adsorption tank.

[0076] In a sixth aspect, the present application provides a computer readable storage medium, which stores a computer program, the computer program being executed by a processor to implement the steps of the diagnosis method of any one of the above oil tank assemblies or to implement the functions of any one of the above electronic devices. BRIEF DESCRIPTION OF DRAWINGS

[0077] The present application will be further described below in conjunction with the drawings and embodiments.

[0078] Figure 1 A structural block diagram of a diagnosis system of an oil tank assembly provided by an embodiment of the present application is shown.

[0079] Figure 2 A structural schematic diagram of a multi-way valve and a pressure sensor provided by an embodiment of the present application is shown.

[0080] Figure 3 A flowchart of a diagnosis method of an oil tank assembly provided by an embodiment of the present application is shown.

[0081] Figure 4 A flowchart of a leak diagnosis provided by an embodiment of the present application is shown.

[0082] Figure 5 A flowchart of a desorption diagnosis provided by an embodiment of the present application is shown.

[0083] Figure 6 A flowchart of refueling an oil tank provided by an embodiment of the present application is shown.

[0084] Figure 7 A structural block diagram of an electronic device provided by an embodiment of the present application is shown.

[0085] Figure 8 A structural diagram of a program product provided by an embodiment of the present application is shown. DETAILED DESCRIPTION

[0086] The technical solutions in the present application will be described below in combination with the accompanying drawings and specific embodiments of the present application. It should be noted that, under the premise of no conflict, each embodiment described below or each technical feature can be combined with any other embodiment or technical feature to form a new embodiment.

[0087] In the embodiments of the present application, "at least one" means one or more, and "multiple" means two or more. The association relationship between the associated objects is described by "and / or", which means that there can be three kinds of relationships, for example, A and / or B, which can represent the following three cases: A exists alone, A and B exist together, and B exists alone, where A and B can be singular or plural. The character " / " generally represents an "or" relationship between the associated objects before and after it. "At least one of the following" or similar expressions means any combination of these items, including any combination of single item or multiple items. For example, at least one of a, b or c can represent a, b, c, a and b, a and c, b and c, and a and b and c, where a, b and c can be singular or plural. It should be noted that "at least one" can also be interpreted as "one or more".

[0088] It should be further noted that, in the embodiments of the present application, the words "exemplary" or "for example" are used to mean serving as an example, instance, or illustration. Any implementation or design scheme described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other implementations or design schemes. Rather, the words "exemplary" or "for example" are used to present the relevant concepts in a specific manner.

[0089] One application field (fuel supply) of the embodiments of the present application will be briefly described below.

[0090] The related terms in the embodiments of the present application may, for example, refer to the standard GB / T 38146.1-2019 or other standards, and the present application does not limit this.

[0091] Working condition refers to the working state of equipment under conditions directly related to its operation. Driving working condition is a time-speed curve describing the driving characteristics of a specific vehicle (such as a passenger car, a commercial vehicle, a city bus, etc.) in a specific traffic environment. The time step is, for example, 1 second.

[0092] Acceleration working condition refers to a working condition in which the acceleration of the vehicle during driving is greater than or equal to a preset acceleration threshold (for example, 0.15 m / s 2 ).

[0093] Deceleration working condition refers to a working condition in which the acceleration of the vehicle during driving is less than or equal to a preset acceleration threshold.

[0094] Constant speed working condition refers to a working condition in which the absolute value of the acceleration of the vehicle during driving is less than a preset acceleration threshold and the driving speed of the vehicle is greater than or equal to a preset speed threshold (for example, 0.5 km / h).

[0095] Idle speed working condition refers to a working condition in which the absolute value of the acceleration of the vehicle during driving is less than a preset acceleration threshold and the driving speed of the vehicle is less than a preset speed threshold. Under the idle speed working condition, the engine operates in neutral, and the output is not sufficient. The speed of the engine at idle speed is called idle speed, and the idle speed can be adjusted by adjusting the size of the damper, etc.

[0096] An automobile diagnostic system, also known as an on-board diagnostic system (OBD for short, also known as an on-board automatic diagnostic system), is a system installed in a vehicle to monitor the operating state of the vehicle and report abnormalities. When a problem occurs in a subsystem of the vehicle, it generates a fault code and a reminder signal to notify the vehicle owner and the vehicle manufacturer of diagnostic and repair. Early on-board diagnostic systems could only report whether a fault had occurred in the form of an indicator light. With the advancement of computer technology, it can now report a wide range of real-time data and standardized fault codes (diagnostic trouble codes, DTC), which has revolutionized the method of diagnosing and repairing automobile faults. The automobile diagnostic system monitors multiple systems and components, including the engine, catalytic converter, particulate filter, oxygen sensor, emission control system, fuel system (i.e., fuel supply system), EGR, etc., and sends information about various components to the electronic control unit (ECU), which has the function of detecting and analyzing related faults. When a fault occurs, the ECU records the fault information and related codes and issues a warning through a warning device such as a fault light to inform the driver and other relevant personnel. The ECU can set a standard data interface to ensure access and processing of fault information.

[0097] Fuel-powered vehicles need to be supplied with fuel by a fuel supply system, and the fuel supply system is communicated with the oil rail of the engine through the fuel supply pipeline.

[0098] In the related art, the fuel supply system generally includes a fuel tank, a filter, a carbon canister, a fuel supply pipeline and the like. The filter is connected in the fuel supply pipeline outside the fuel tank, and the oil vapor is filtered by the filter to remove impurities therein. The carbon canister can adsorb the oil vapor to reduce emissions.

[0099] In some fuel supply systems of vehicles, a fuel tank isolation valve is arranged between the fuel tank and the carbon canister. Generally, the fuel tank isolation valve is kept in a closed state, and the oil vapor is locked in the fuel tank. When entering the refueling working condition, the vehicle controller controls the fuel tank isolation valve to open and release pressure, and the oil vapor enters the carbon canister and is adsorbed. When the pressure in the fuel tank is lowered to a set threshold value, the filler cap of the fuel tank is opened to allow refueling. In this way, the fuel tank isolation valve mainly plays a blocking role between the carbon canister and the fuel tank, and therefore the fuel tank isolation valve has a large pressure-bearing structure while having the function of being opened and closed at any time.

[0100] The existing fuel tank isolation valve includes a valve body and a pressure valve and an electromagnetic valve arranged in the valve body. When the pressure in the fuel tank reaches the opening set value of the pressure valve, the pressure valve will open to release pressure. When the pressure in the fuel tank does not reach the opening set value of the pressure valve, the controller of the vehicle can control the electromagnetic valve to open to release pressure according to the working condition to allow refueling. However, the existing fuel tank isolation valve has a large volume, a complex structure and a high price. In addition, in actual use, when the electromagnetic valve fails to open, the fuel tank cannot release pressure, resulting in that refueling cannot be performed. Therefore, in the current practice, the fuel tank isolation valve is usually replaced. Since the fuel tank isolation valve is too expensive, the maintenance cost will be correspondingly increased.

[0101] In summary, the diagnosis method of the existing fuel supply system is relatively complex and has a high cost. Based on this, the present application provides a diagnosis method and system of a fuel tank assembly, an electronic device and a storage medium to improve the prior art.

[0102] (System embodiment)

[0103] Referring to Figure 1 and Figure 2 , Figure 1 shows a structural block diagram of a diagnosis system of a fuel tank assembly provided by an embodiment of the present application, Figure 2 shows a structural schematic diagram of a multi-way valve and a pressure sensor 301 provided by an embodiment of the present application.

[0104] The present application provides a diagnosis system of a fuel tank assembly, the fuel tank assembly including a fuel tank and an adsorption tank, and the diagnosis system including:

[0105] The electronic device 10;

[0106] The gating module 20 is configured to selectively connect or isolate the fuel tank and the adsorption canister.

[0107] The pressure detection module 30 is configured to detect pressure.

[0108] The fuel tank is a container for storing fuel on an airplane or a car, and is a special container for storing hydraulic oil or hydraulic fluid in a hydraulic system. The fuel in the fuel tank is not limited in the embodiments of the present application, and can be, for example, gasoline, diesel oil, aviation kerosene, etc.

[0109] In some embodiments, the adsorption canister is a carbon canister (also referred to as a carbon canister).

[0110] The adsorption canister is arranged between the fuel tank and the engine, and contains an adsorption material for adsorbing oil vapor. The adsorption material in the adsorption canister is not limited in the embodiments of the present application, and can be, for example, various activated carbon adsorbents and metal and non-metal oxide adsorbents using carbon as raw material. Specifically, the adsorption material in the adsorption canister can be, for example, activated carbon, molecular sieve, silica gel, activated aluminum (i.e., activated alumina), natural clay, polymer adsorbent, biological adsorbent, etc.

[0111] The carbon canister is generally installed between the fuel tank and the engine. Since gasoline is a volatile liquid, the fuel tank is often filled with (oil) vapor at room temperature, and the carbon canister is used to introduce the vapor into combustion and prevent volatilization into the atmosphere.

[0112] In some optional embodiments, the gating module 20 adopts a fuel tank isolation valve (FTIV). The full name of the fuel tank isolation valve is Fuel Tank Isolation Valve, which seals the evaporated oil gas in the fuel tank, and the oil gas in the fuel tank can be released into the carbon canister and then into the engine for combustion. The FTIV can adopt an electrically controlled valve body, which can cut off the path when the engine is not working, preventing (fuel) oil vapor from being discharged to the outside atmosphere. When the car works in pure electric mode, the FTIV can effectively control the pressure in the fuel tank and the discharge of hydrocarbons to the carbon canister. Some FTIVs can also function as safety valves to achieve the function of bidirectional regulation of the pressure in the fuel tank. On the one hand, the FTIV can be opened to ensure that the pressure in the fuel tank does not exceed the upper limit; on the other hand, it can also ensure that when the fuel tank has excessive negative pressure, the valve body can be opened in time to reduce the negative pressure.

[0113] In some optional embodiments, the gating module 20 adopts a multi-way valve, and the pressure detection module 30 adopts a pressure sensor 301.

[0114] When the multi-way valve is in the first state, the multi-way valve is used to connect the oil tank and the adsorption tank, and the pressure sensor 301 is used to detect the pressure of the oil tank assembly;

[0115] When the multi-way valve is in the second state, the multi-way valve is used to isolate the oil tank and the adsorption tank, and the pressure sensor 301 is used to detect the pressure of the adsorption tank.

[0116] The pressure sensor 301 (Pressure Transducer) is a device or apparatus that can sense pressure and convert it into an electrical signal output according to a certain rule. The output data of the pressure sensor 301 can be expressed as pressure or pressure intensity, for example.

[0117] In some embodiments, the multi-way valve has multiple ports and multiple different channels. By switching between these different channels, the multi-way valve can switch between operating states such as the first state, the second state, and the third state. Different operating states can also be regarded as different operating modes (or operating positions, stations).

[0118] As an example, the first state is the overall leak diagnosis state, the second state is the desorption diagnosis state, and the third state is the fuel tank leak diagnosis state. The overall leak diagnosis state refers to the leak diagnosis state of the fuel tank and charcoal canister as a whole.

[0119] In some alternative embodiments, when the multi-way valve is in the third state, the multi-way valve is used to isolate the oil tank and the adsorption tank, and the pressure sensor 301 is used to detect the pressure of the oil tank.

[0120] In some optional implementations, when the multi-way valve is in the first position, it is confirmed that the multi-way valve is in the first state; when the multi-way valve is in the second position, it is confirmed that the multi-way valve is in the second state; and when the multi-way valve is in the third position, it is confirmed that the multi-way valve is in the third state.

[0121] In some alternative implementations, the first position and the third position are located on either side of the second position.

[0122] In some embodiments, the first position is the left position, the second position is the middle position, and the third position is the right position.

[0123] In other embodiments, the first position is the right position, the second position is the middle position, and the third position is the left position (e.g., ...). Figure 2 (As shown). Figure 2 In the middle position, the multi-way valve is in the left position (third position), which can detect the pressure inside the oil tank.

[0124] In yet some embodiments, the first position is upper, the second position is middle, and the third position is lower.

[0125] In yet some embodiments, the first position is lower, the second position is middle, and the third position is upper.

[0126] In some optional embodiments, the diagnostic system further comprises a driving assembly for driving the multi-way valve to switch among the first position, the second position and the third position.

[0127] In some optional embodiments, the driving assembly is electrically, pneumatically or hydraulically driven.

[0128] In some embodiments, the driving assembly is an electric motor, a pneumatic cylinder or a solenoid valve.

[0129] In some optional embodiments, when the multi-way valve is in the first position, the first end 201 of the multi-way valve is connected to the oil tank, the second end 202 of the multi-way valve is connected to the adsorption tank, the third end 203 of the multi-way valve is connected to the pressure sensor 301, and the first end 201, the second end 202 and the third end 203 of the multi-way valve are connected to each other; when the multi-way valve is in the second position, the fourth end 204 of the multi-way valve is connected to the pressure sensor 301, the fifth end 205 of the multi-way valve is connected to the adsorption tank, and the fourth end 204 and the fifth end 205 of the multi-way valve are connected to each other; when the multi-way valve is in the third position, the sixth end 206 of the multi-way valve is connected to the oil tank, the seventh end 207 of the multi-way valve is connected to the pressure sensor 301, and the sixth end 206 and the seventh end 207 of the multi-way valve are connected to each other.

[0130] In some optional embodiments, the multi-way valve is further provided with eighth to twelfth ends 208-212 which are normally closed, the first end 201 and the second end 202 of the multi-way valve are oppositely arranged, the eighth end 208 and the third end 203 of the multi-way valve are oppositely arranged, the ninth end 209 and the fifth end 205 of the multi-way valve are oppositely arranged, the fourth end 204 and the tenth end 210 of the multi-way valve are oppositely arranged, the sixth end 206 and the twelfth end 212 of the multi-way valve are oppositely arranged, and the eleventh end 211 and the seventh end 207 of the multi-way valve are oppositely arranged. This has the advantage that a plurality of oppositely arranged ports can be machined during the machining and manufacturing process of the multi-way valve, thus simplifying the manufacturing process and reducing the manufacturing cost. In addition, when part or all of the above-mentioned normally closed ports (i.e. the eighth to twelfth ends 208-212) are activated, other functions of the multi-way valve can be realized.

[0131] The embodiment of the present application further provides an automobile diagnosis system, which comprises the diagnosis system of any one of the fuel tank assemblies.

[0132] The embodiment of the present application further provides an automobile, which comprises the diagnosis system of any one of the automobile diagnosis systems and a fuel supply system, wherein the fuel supply system comprises a fuel tank assembly, and the fuel tank assembly comprises a fuel tank and an adsorption tank.

[0133] In addition to the automobile, the diagnosis system of the fuel tank assembly in the embodiment of the present application can also be applied to other systems containing the fuel tank assembly, such as a ship, an airplane, a space ship and the like.

[0134] In the embodiment of the present application, the electronic device 10 can be configured to implement the steps of the diagnosis method of the fuel tank assembly. Hereinafter, the diagnosis method of the fuel tank assembly will be described first, and then the electronic device 10 will be described.

[0135] (Method embodiment)

[0136] Referring to Figure 3 , Figure 3 A flowchart of a diagnosis method of a fuel tank assembly provided by the embodiment of the present application is shown.

[0137] The embodiment of the present application provides a diagnosis method of a fuel tank assembly, wherein the fuel tank assembly comprises a fuel tank and an adsorption tank, and the method comprises the following steps:

[0138] Step S101: connecting the fuel tank and the adsorption tank by using the gating module, so as to perform a leakage diagnosis on the fuel tank assembly by using the pressure detection module, and obtaining a leakage diagnosis result, wherein the leakage diagnosis result is used to indicate whether the fuel tank and the adsorption tank have leakage.

[0139] Step S102: isolating the fuel tank and the adsorption tank by using the gating module, so as to perform a desorption diagnosis on the adsorption tank by using the pressure detection module, and obtaining a desorption diagnosis result, wherein the desorption diagnosis result is used to indicate whether the adsorption tank has desorption.

[0140] In the embodiment of the present application, the leakage diagnosis result can be represented by at least one of Chinese, letters, numbers and special symbols, and for example, can be represented as “no leakage”, “leakage”, “A001”, “B001”, “#01”, “#02”, “Y”, “N”, “Yes”, “No”, “1”, “0” and the like.

[0141] As an example, "no leakage", "A001", "#01", "Y", "Yes" or "1" is used to indicate that the tank and the carbon canister do not leak, and the leakage diagnosis result does not meet the leakage alarm condition; "leakage", "B001", "#02", "N", "No" or "0" is used to indicate that the tank and / or the carbon canister leak, and the leakage diagnosis result meets the leakage alarm condition.

[0142] In the embodiments of the present application, the desorption diagnosis result can be represented by at least one of Chinese, letters, numbers and special symbols, for example, it can be represented as "A001", "B001", "low desorption efficiency", "normal desorption", "abnormal desorption", "#01", "#02", "Y", "N", "Yes", "No", "1", "0", etc.

[0143] As an example, "A001", "normal desorption", "#01", "Y", "Yes" or "1" is used to indicate that the desorption condition is normal, and the desorption diagnosis result does not meet the desorption alarm condition; "B001", "low desorption efficiency", "abnormal desorption", "#02", "N", "No" or "0" is used to indicate that the desorption condition is abnormal, and the diagnosis result meets the desorption alarm condition.

[0144] When the leakage alarm condition or the desorption alarm condition is met, an automatic and intelligent alarm can be performed, and the alarm mode can be, for example, alarm light flashing, buzzer sound alarm, sending of alarm information, etc. The sending of alarm information can be, for example, short message push, email push, application push, telephone notification, etc. The application can be, for example, a mobile APP, a computer APP, a mini program, etc.

[0145] Thus, the diagnosis process is simple and the cost is low.

[0146] Firstly, the tank and the adsorption canister are connected by the gating module, so that the pressures inside the tank and the adsorption canister are the same (no pressure difference), and thus the tank assembly (or the tank and the adsorption canister as a whole) can be diagnosed for leakage by the pressure detection module, and a leakage diagnosis result (for the whole) is obtained, which is used to indicate whether the tank and the adsorption canister as a whole leak (compared to detecting whether the tank and the adsorption canister leak in sections), that is, when the tank and / or the adsorption canister leak, the leakage diagnosis result indicates that leakage occurs, and only when the tank and the adsorption canister do not leak, the leakage diagnosis result indicates that no leakage occurs; in addition, the tank and the adsorption canister can also be isolated by the gating module, so that the same pressure detection module can be used to diagnose the desorption of the adsorption canister, and the obtained desorption diagnosis result is used to indicate whether the adsorption canister leaks.

[0147] The method can selectively connect or isolate the oil tank and the adsorption tank through the gating module, so that the same pressure detection module is used for leakage diagnosis and desorption diagnosis, and the diagnosis process is simple. The object of the leakage diagnosis is the whole oil tank and adsorption tank, and the object of the desorption diagnosis is the adsorption tank. The leakage diagnosis process and the desorption diagnosis process share one pressure detection module, which can reduce the hardware cost compared with setting pressure detection modules for the two diagnosis processes respectively. In addition, the combination of the gating module and the pressure detection module reduces the number of hardware, and reduces the complexity of the hardware as a whole. Moreover, users can select appropriate gating modules and pressure detection modules according to the performance requirements and cost requirements in actual application, and the application range is wide.

[0148] Referring to Figure 4 , Figure 4 A flowchart of a leakage diagnosis provided by an embodiment of the application is shown.

[0149] In some optional embodiments, the process of using the pressure detection module to perform leakage diagnosis on the oil tank assembly includes:

[0150] Step S201: After controlling the oil tank assembly to be in a positive pressure environment or a negative pressure environment, close all switches between the oil tank assembly and the outside world;

[0151] Step S202: At a first time and a second time, respectively use the pressure detection module to detect a first pressure and a second pressure of the oil tank assembly;

[0152] Step S203: When the first pressure and the second pressure satisfy a first preset pressure condition, determine that the leakage diagnosis result is used to indicate that the oil tank and the adsorption tank do not leak;

[0153] Step S204: When the first pressure and the second pressure do not satisfy the first preset pressure condition, determine that the leakage diagnosis result is used to indicate that the oil tank and the adsorption tank leak.

[0154] In the embodiment of the application, the positive pressure refers to a state of gas with a gas pressure higher than the normal pressure (i.e. one atmosphere). For example, a micro vacuum pump (which can be used for pumping and inflating) can form a positive pressure of 0.1 Mpa (relative pressure) at the exhaust end, which means that it can form a gas pressure 0.1 Mpa higher than the atmospheric pressure. The positive pressure environment refers to an environment with an air pressure of positive pressure.

[0155] The pressure of the positive pressure environment is not limited in the embodiment of the application, which can be, for example, 102 Kpa, 103 Kpa, 104 Kpa, 105 Kpa, 106 Kpa, 110 Kpa, 120 Kpa, 130 Kpa, 150 Kpa, 200 Kpa, etc.

[0156] In the embodiments of the present application, negative pressure refers to a state of gas with a pressure lower than normal pressure (i.e., one atmosphere). For example, a miniature vacuum pump can form a negative pressure of 0.04 MPa at the pumping end, meaning that it can pump away 40% of the gas in a sealed container, leaving 60%, and the pressure difference with the outside atmosphere is 100*(1-0.6) = 40 KPa (i.e., its negative pressure value is -40 KPa). On a commonly used vacuum gauge, it is displayed as -0.04 MPa (assuming the local atmospheric pressure is 0.1 MPa).

[0157] The embodiments of the present application do not limit the pressure of the negative pressure environment, which may, for example, be 80 KPa, 87 KPa, 90 KPa, 92 KPa, 93 KPa, 94 KPa, 95 KPa, 96 KPa, 99 KPa, etc.

[0158] As an example, the oil tank assembly includes an oil tank and a carbon canister, and all the openings between the oil tank assembly and the outside world include a ventilation valve (also known as an exhaust valve, CVS valve, CVS) between the carbon canister and the atmosphere, a desorption valve (also known as a carbon canister purification valve, CPV valve, CPV) between the carbon canister and the engine, and a refueling switch of the oil tank. Among them, CVS is the abbreviation of Canister vent valve, and CPV is the abbreviation of Canister purge valve.

[0159] Thus, under the premise of communicating the oil tank and the adsorption canister, the pressure of the oil tank assembly (inside) is the same everywhere, and the oil tank assembly can be diagnosed for leakage. Specifically, after the oil tank assembly is in a positive pressure environment or a negative pressure environment, all the openings between the oil tank assembly and the outside world are closed;

[0160] The first pressure of the oil tank assembly is detected by the pressure detection module at the first time, and the second pressure of the oil tank assembly is detected by the pressure detection module at the second time. The second time is a time after the first time, and the interval between the two may, for example, adopt a first preset time threshold, which may, for example, be 5 seconds, 10 seconds, 30 seconds, 1 minute, 2 minutes or 5 minutes, etc.

[0161] After obtaining the first pressure and the second pressure, it can be detected whether the first preset pressure condition is met. The first preset pressure condition is pre-set, which may, for example, be manually set or intelligently set. For example, the first preset pressure condition may, for example, be that the absolute value of the difference between the first pressure and the second pressure is not greater than a first preset pressure threshold, or the first preset pressure condition may, for example, be that the ratio of the absolute value of the difference between the first pressure and the second pressure to the first pressure is not greater than a first preset ratio threshold.

[0162] When it is detected that the first preset pressure condition is met, it is confirmed that neither the oil tank nor the adsorption tank leaks, i.e., the oil tank does not leak and the adsorption tank does not leak.

[0163] When it is detected that the first preset pressure condition is not met, it is confirmed that the oil tank and the adsorption tank leak as a whole, and whether the oil tank or the adsorption tank leaks or both leak, a further detection process is needed to confirm. That is, after the oil tank and the adsorption tank are connected by the gating module, the pressure change of the oil tank assembly can be detected by the above-mentioned leakage detection process to obtain the leakage diagnosis result.

[0164] The first preset time threshold and the second preset time threshold (hereinafter) in the embodiments of the present application are not limited, which can be, for example, 1 second, 5 seconds, 10 seconds, 30 seconds, 1 minute, 2 minutes, 5 minutes, 10 minutes, 30 minutes, 1 hour, etc.

[0165] The first preset pressure threshold and the second preset pressure threshold (hereinafter) in the embodiments of the present application are not limited, which can be, for example, 0.001 kpa, 0.01 kpa, 0.03 kpa, 0.1 kpa, 0.3 kpa, 1 kpa, 3 kpa, 5 kpa, 10 kpa, 30 kpa, 50 kpa, 100 kpa, etc.

[0166] The first preset ratio threshold and the second preset ratio threshold (hereinafter) in the embodiments of the present application are not limited, which can be, for example, 0.00001, 0.0001, 0.001, 0.01, 0.03, 0.1, 0.3, 0.5, etc.

[0167] As an example, the oil tank assembly is controlled to be in a positive pressure environment, and the first pressure detected is greater than the second pressure.

[0168] As another example, the oil tank assembly is controlled to be in a negative pressure environment, and the first pressure detected is less than the second pressure.

[0169] In some embodiments, the pressure change of the oil tank assembly is detected, for example, 7% per minute, 3% per second, 0.03 kpa per minute, 0.003 kpa per minute, etc. The pressure change can be represented by a pressure-time curve, the abscissa of which is used to identify the time, and the ordinate is used to identify the pressure.

[0170] In some optional embodiments, the process of controlling the oil tank assembly to be in a negative pressure environment comprises:

[0171] Connecting the adsorption tank and the engine to create a negative pressure environment by the engine.

[0172] Thus, the negative pressure environment of the oil tank assembly (or the oil tank and the adsorption tank) is created by using (existing or ready) engine operation to drive the mixture from the oil tank assembly into the engine, which can reduce the hardware cost compared to additional pressure adjusting equipment such as a gas pump, and realize the function expansion of the engine, because the engine functions as the pressure adjusting equipment at this time. The connection between the adsorption tank and the engine may, for example, be opening the desorption valve between the adsorption tank and the engine.

[0173] In some optional embodiments, the process of controlling the oil tank assembly to be in a negative pressure environment includes:

[0174] The adsorption tank is connected to the external atmosphere to create a negative pressure environment by using a gas pump.

[0175] Thus, the adsorption tank is connected to the external atmosphere, and the gas in the adsorption tank and the oil tank is drawn into the external atmosphere by using the gas pump to create a negative pressure environment of the oil tank assembly (or the oil tank and the adsorption tank).

[0176] In some optional embodiments, the process of controlling the oil tank assembly to be in a positive pressure environment includes:

[0177] The adsorption tank is connected to the external atmosphere to create a positive pressure environment by using a gas pump.

[0178] The gas pump is arranged between the adsorption tank and the external atmosphere, or the gas pump is arranged between the oil tank and the adsorption tank.

[0179] In some embodiments, the gating module adopts an oil tank isolation valve. When the gas pump is arranged between the oil tank and the adsorption tank, the gas pump can be integrated with the oil tank isolation valve as an oil tank isolation assembly.

[0180] Thus, the adsorption tank is connected to the external atmosphere, and the external air is pumped into the adsorption tank and the oil tank by using the gas pump to create a positive pressure environment of the oil tank assembly (or the oil tank and the adsorption tank).

[0181] The gas pump can be arranged between the adsorption tank and the external atmosphere, or the gas pump can be arranged between the oil tank and the adsorption tank. The user can set the installation position of the gas pump according to the needs in actual application, and both can realize the effect of creating a positive pressure environment, which has high flexibility. The connection between the adsorption tank and the external atmosphere may, for example, be opening the ventilation valve between the adsorption tank and the external atmosphere.

[0182] Referring to Figure 5 , Figure 5 A flowchart of a desorption diagnosis provided by an embodiment of the present application is shown.

[0183] In some optional embodiments, the process of using the pressure detection module to perform the desorption diagnosis on the adsorption tank comprises:

[0184] Step S301: When the engine is in the idle operating condition, the adsorption tank is connected to the engine.

[0185] Step S302: At the third time and the fourth time, the third pressure and the fourth pressure of the adsorption tank are detected by using the pressure detection module respectively.

[0186] Step S303: When the third pressure and the fourth pressure satisfy the second preset pressure condition, it is determined that the desorption diagnosis result indicates that the desorption of the adsorption tank occurs.

[0187] Step S304: When the third pressure and the fourth pressure do not satisfy the second preset pressure condition, it is determined that the desorption diagnosis result indicates that the desorption of the adsorption tank does not occur.

[0188] Therefore, under the premise of isolating the oil tank and the adsorption tank, the desorption diagnosis on the adsorption tank can be performed. Specifically, when the engine is in the idle operating condition, the adsorption tank needs to be connected to the engine to use the engine to realize the desorption process of the adsorption tank.

[0189] The third pressure of the adsorption tank is detected by using the pressure detection module at the third time, and the fourth pressure of the adsorption tank is detected by using the pressure detection module at the fourth time. The fourth time is a time after the third time, and the interval between the two times can be, for example, a second preset time threshold. The second preset time threshold can be, for example, 5 seconds, 10 seconds, 30 seconds, 1 minute, 2 minutes, or 5 minutes.

[0190] After obtaining the third pressure and the fourth pressure, it can be detected whether the second preset pressure condition is satisfied. The second preset pressure condition is pre-set, which can be, for example, manually set or intelligently set. For example, the second preset pressure condition can be that the absolute value of the difference between the third pressure and the fourth pressure is not less than a second preset pressure threshold. Alternatively, the second preset pressure condition can be that the ratio of the absolute value of the difference between the third pressure and the fourth pressure to the third pressure is not less than a second preset ratio threshold.

[0191] When it is detected that the second preset pressure condition is satisfied, it is confirmed that the desorption of the adsorption tank occurs (i.e., there is a desorption flow).

[0192] When it is detected that the second preset pressure condition is not satisfied, it is confirmed that the desorption of the adsorption tank does not occur (i.e., there is no desorption flow). That is, after the oil tank and the adsorption tank are isolated by using the gating module, the pressure change of the adsorption tank during the desorption process can be detected to obtain the desorption diagnosis result and confirm whether there is a desorption flow.

[0193] In some optional embodiments, the desorption flow rate can be obtained based on the third pressure and the fourth pressure; and / or, the interval duration between the third time and the fourth time is calculated, and the desorption flow rate is obtained based on the calculated interval duration and the third pressure and the fourth pressure.

[0194] In the embodiments of the present application, the unit of the desorption flow rate can be mL or L for example, and the unit of the desorption flow rate can be mL / s, mL / min, L / s, L / min, L / h for example. Wherein, mL is milliliter, L is liter, s is second, min is minute, and h is hour.

[0195] As an example, the desorption flow rate is detected as 375 L, and the desorption flow rate is 1 L / s.

[0196] Referring to Figure 6 , Figure 6 A flowchart for refueling an oil tank is shown.

[0197] In some optional embodiments, the method further comprises:

[0198] Step S401: connecting the oil tank and the adsorption tank by using the gating module;

[0199] Step S402: detecting the real-time pressure of the oil tank by using the pressure detection module;

[0200] Step S403: when the real-time pressure is less than a preset refueling pressure threshold, opening the refueling switch of the oil tank to perform the refueling operation on the oil tank;

[0201] Step S404: when the refueling switch is detected to be closed, isolating the oil tank and the adsorption tank by using the gating module.

[0202] In the embodiments of the present application, the refueling switch can be a solenoid valve for example.

[0203] Thus, the refueling process is intelligently controlled. Specifically, after connecting the oil tank and the adsorption tank by using the gating module, the real-time pressure of the oil tank is detected by using the pressure detection module. When the real-time pressure is less than the preset refueling pressure threshold, it is confirmed that the refueling condition is met, and the refueling switch of the oil tank is automatically opened, so that the user or the refueling personnel of the gas station can perform the refueling operation on the oil tank. When the refueling switch is automatically closed or manually closed (at this time, the refueling switch is detected to be closed), the oil tank and the adsorption tank are isolated by using the gating module. If necessary, the real-time pressure of the oil tank can be detected by using the pressure detection module to ensure the safety of the oil tank.

[0204] In one specific application scenario, the embodiment of the present application provides a diagnosis method of an oil tank assembly, the oil tank assembly comprising an oil tank and an adsorption tank, the method comprising:

[0205] communicating the oil tank and the adsorption tank by using the gating module, so as to perform a leakage diagnosis on the oil tank assembly by using the pressure detection module, and obtain a leakage diagnosis result, the leakage diagnosis result being used to indicate whether the oil tank and the adsorption tank leak;

[0206] isolating the oil tank and the adsorption tank by using the gating module, so as to perform a desorption diagnosis on the adsorption tank by using the pressure detection module, and obtain a desorption diagnosis result, the desorption diagnosis result being used to indicate whether the adsorption tank desorbs;

[0207] communicating the oil tank and the adsorption tank by using the gating module;

[0208] detecting a real-time pressure of the oil tank by using the pressure detection module;

[0209] when the real-time pressure is less than a preset oiling pressure threshold, opening an oiling switch of the oil tank, so as to perform an oiling operation on the oil tank;

[0210] when it is detected that the oiling switch is closed, isolating the oil tank and the adsorption tank by using the gating module.

[0211] wherein the process of performing the leakage diagnosis on the oil tank assembly by using the pressure detection module comprises:

[0212] communicating the adsorption tank and an engine, so as to create a negative pressure environment by using the engine;

[0213] after controlling the oil tank assembly to be in the negative pressure environment, closing all switches between the oil tank assembly and the outside world;

[0214] at a first time and a second time, respectively detecting a first pressure and a second pressure of the oil tank assembly by using the pressure detection module;

[0215] when the first pressure and the second pressure satisfy a first preset pressure condition, determining that the leakage diagnosis result is used to indicate that the oil tank and the adsorption tank do not leak;

[0216] when the first pressure and the second pressure do not satisfy the first preset pressure condition, determining that the leakage diagnosis result is used to indicate that the oil tank and the adsorption tank leak.

[0217] wherein the process of performing the desorption diagnosis on the adsorption tank by using the pressure detection module comprises:

[0218] communicate the adsorption tank and the engine when the engine is in an idle state;

[0219] detect a third pressure and a fourth pressure of the adsorption tank by using the pressure detection module at the third moment and the fourth moment respectively;

[0220] when the third pressure and the fourth pressure satisfy a second preset pressure condition, determining that the desorption diagnosis result is used to indicate that the adsorption tank has desorbed;

[0221] when the third pressure and the fourth pressure do not satisfy the second preset pressure condition, determining that the desorption diagnosis result is used to indicate that the adsorption tank has not desorbed.

[0222] (an equipment embodiment)

[0223] The electronic equipment provided in the embodiments of the present application has the same technical effects as the embodiments described in the above method embodiments, and some contents will not be described herein again.

[0224] The electronic equipment provided in the embodiments of the present application is used for diagnosing an oil tank assembly, the oil tank assembly comprising an oil tank and an adsorption tank, and the electronic equipment comprises a memory and at least one processor, the memory stores a computer program, and the at least one processor implements the following steps when executing the computer program:

[0225] communicating the oil tank and the adsorption tank by using the gating module, so as to diagnose the oil tank assembly for leakage by using the pressure detection module, and obtain a leakage diagnosis result, the leakage diagnosis result being used to indicate whether the oil tank and the adsorption tank have leaked;

[0226] isolating the oil tank and the adsorption tank by using the gating module, so as to diagnose the adsorption tank for desorption by using the pressure detection module, and obtain a desorption diagnosis result, the desorption diagnosis result being used to indicate whether the adsorption tank has desorbed.

[0227] In some optional embodiments, the at least one processor executes the computer program to diagnose the oil tank assembly for leakage by using the pressure detection module in the following manner:

[0228] after controlling the oil tank assembly to be in a positive pressure environment or a negative pressure environment, closing all switches between the oil tank assembly and the outside world;

[0229] detecting a first pressure and a second pressure of the oil tank assembly by using the pressure detection module at the first moment and the second moment respectively;

[0230] When the first pressure and the second pressure satisfy a first preset pressure condition, the leakage diagnosis result is determined to indicate that the oil tank and the adsorption tank do not leak.

[0231] When the first pressure and the second pressure do not satisfy the first preset pressure condition, the leakage diagnosis result is determined to indicate that the oil tank and the adsorption tank leak.

[0232] In some optional embodiments, the at least one processor, when executing the computer program, controls the oil tank assembly to be in a negative pressure environment in the following manner:

[0233] The adsorption tank is connected to the engine to create a negative pressure environment by using the engine.

[0234] In some optional embodiments, the at least one processor, when executing the computer program, controls the oil tank assembly to be in a positive pressure environment in the following manner:

[0235] The adsorption tank is connected to the external atmosphere to create a positive pressure environment by using a gas pump;

[0236] The gas pump is arranged between the adsorption tank and the external atmosphere, or the gas pump is arranged between the oil tank and the adsorption tank.

[0237] In some optional embodiments, the at least one processor, when executing the computer program, uses the pressure detection module to perform desorption diagnosis on the adsorption tank in the following manner:

[0238] When the engine is in an idle operating condition, the adsorption tank is connected to the engine;

[0239] At a third time and a fourth time, a third pressure and a fourth pressure of the adsorption tank are detected by using the pressure detection module respectively;

[0240] When the third pressure and the fourth pressure satisfy a second preset pressure condition, the desorption diagnosis result is determined to indicate that the adsorption tank desorbs;

[0241] When the third pressure and the fourth pressure do not satisfy the second preset pressure condition, the desorption diagnosis result is determined to indicate that the adsorption tank does not desorb.

[0242] In some optional embodiments, the at least one processor, when executing the computer program, further implements the following steps:

[0243] The oil tank and the adsorption tank are connected by using the gating module;

[0244] The real-time pressure of the oil tank is detected by using the pressure detection module.

[0245] when the real-time pressure is less than a preset refueling pressure threshold, opening a refueling switch of the oil tank to perform a refueling operation on the oil tank;

[0246] when it is detected that the refueling switch is closed, isolating the oil tank and the adsorption tank by using the gating module.

[0247] Referring to Figure 7 , Figure 7 A structural block diagram of an electronic device 10 is shown.

[0248] The electronic device 10 may, for example, include at least one memory 11, at least one processor 12, and a bus 13 connecting different platform systems.

[0249] The memory 11 can include a readable medium in the form of a volatile memory, such as a random access memory (RAM) 111 and / or a cache memory 112, and can further include a read-only memory (ROM) 113.

[0250] The memory 11 further stores a computer program, which can be executed by the processor 12 to enable the processor 12 to implement the steps of any of the above methods.

[0251] The memory 11 can further include a utility 114 having at least one program module 115, such as an operating system, one or more application programs, other program modules, and program data, each of which or some combination of which can include implementation of a network environment.

[0252] Correspondingly, the processor 12 can execute the above computer program and can execute the utility 114.

[0253] The processor 12 can employ one or more application specific integrated circuits (ASICs), DSPs, programmable logic devices (PLDs), complex programmable logic devices (CPLDs), field programmable gate arrays (FPGAs), or other electronic elements.

[0254] The bus 13 can be one or more of several types of bus structures, including a memory bus or memory controller, a peripheral bus, a graphics acceleration port, a processor, or a local bus using various bus architectures.

[0255] Electronic device 10 can also communicate with one or more external devices such as a keyboard or pointing device, a Bluetooth device, or a device that enables

[0256] (Medium embodiment)

[0257] The embodiment of the present application further provides a computer readable storage medium, the computer readable storage medium stores a computer program, the computer program is executed by a processor to realize the steps of any one of the above methods or realize the functions of any one of the above devices, and specific embodiments and achieved technical effects are consistent with the embodiments described in the above method embodiments, and part of the content will not be described again.

[0258] Referring to Figure 8 , Figure 8 A structure schematic diagram of a program product provided by the embodiment of the present application is shown.

[0259] The program product is used to implement any of the above methods. The program product can take a portable compact disc read-only memory (CD-ROM) and include program code, and can be run on a terminal device, such as a personal computer. However, the program product of the present application is not limited to this, and in the embodiments of the present application, the readable storage medium can be any tangible medium containing or storing a program, which can be used by or in conjunction with an instruction execution system, apparatus, or device. The program product can take any combination of one or more readable media. The readable medium can be a readable signal medium or a readable storage medium. The readable storage medium may, for example, be but is not limited to an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the above. More specific examples (non-exhaustive list) of the readable storage medium include an electrical connection having one or more wires, a portable disc, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above.

[0260] The computer readable storage medium can include a data signal transported over a carrier wave and can be baseband or propagated along with carriers. The propagated carrier can take any of a variety of forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A computer readable storage medium can be any medium that can be read by an instruction execution system, apparatus, or device, or that can communicate a program to such a system, apparatus, or device for use by or in connection with the instruction execution system, apparatus, or device. The program code contained on the computer readable storage medium can be transmitted using any suitable medium, including, but not limited to, wireless, wire line, optical fiber cable, RF, etc., or any suitable combination of the above. The program code can be written in any of a variety of programming languages, including an object oriented programming language such as Java, C++, etc., or a conventional procedural programming language such as the C programming language or similar programming languages. The program code can execute entirely on the user's computing device, partly on the user's computing device, as a stand-alone software package, partly on the user's computing device and partly on a remote computing device or entirely on the remote computing device or server. In the latter scenario, the remote computing device can be connected to the user's computing device through any type of network, including a local area network (LAN) or a wide area network (WAN), or the connection can be made to an external computing device, such as through the Internet using an Internet Service Provider.

[0261] The application is described from the use purpose, efficiency, progress and novelty, which meets the function improvement and use requirements emphasized by the patent law. The above description and drawings are only the preferred embodiments of the application, and are not limited to the application. Therefore, all similar, identical, equivalent replacement or modification within the scope of the patent application of the application shall be within the scope of the patent application protection of the application.

Claims

1. A method of diagnosing an oil tank assembly, the method comprising: The oil tank assembly includes an oil tank and an adsorption tank, and the method includes: communicating the oil tank and the adsorption tank by using a gating module, closing all switches between the oil tank assembly and the outside world after the oil tank assembly is controlled to be in a negative pressure environment or a positive pressure environment, detecting a first pressure and a second pressure of the oil tank assembly at a first time and a second time by using a pressure detection module, determining a leakage diagnosis result indicating that the oil tank and the adsorption tank do not leak when the first pressure and the second pressure meet a first preset pressure condition, and otherwise indicating that leakage occurs; switching to a state of isolating the oil tank and the adsorption tank by using the gating module, and making the pressure detection module only communicate with the adsorption tank; communicating the adsorption tank and an engine when the engine is in an idle operating condition; and detecting a third pressure and a fourth pressure of the adsorption tank at a third time and a fourth time by using the pressure detection module; determining a desorption diagnosis result indicating that the adsorption tank desorbs when an absolute value of a difference between the third pressure and the fourth pressure is greater than or equal to a second preset pressure threshold, and otherwise indicating that the adsorption tank does not desorb; the gating module is a multi-way valve, and the multi-way valve supports at least three state switches: a first state of communicating the oil tank, the adsorption tank and the pressure detection module, a second state of only communicating the adsorption tank and the pressure detection module, and a third state of only communicating the oil tank and the pressure detection module.

2. The diagnostic method of an oil tank assembly according to claim 1, characterized in that, The process of controlling the oil tank assembly to be in a negative pressure environment includes: communicating the adsorption tank and the engine to use the engine to create a negative pressure environment.

3. The method of diagnosing an oil tank assembly of claim 1, wherein, The process of controlling the oil tank assembly to be in a positive pressure environment includes: communicating the adsorption tank and the outside atmosphere to use a gas pump to create a positive pressure environment; wherein the gas pump is arranged between the adsorption tank and the outside atmosphere, or the gas pump is arranged between the oil tank and the adsorption tank.

4. The method of diagnosing an oil tank assembly of claim 1, wherein, The method further includes: communicating the oil tank and the adsorption tank by using the gating module; detecting a real-time pressure of the oil tank by using the pressure detection module; opening a refueling switch of the oil tank to perform a refueling operation on the oil tank when the real-time pressure is less than a preset refueling pressure threshold; isolating the oil tank and the adsorption tank by using the gating module when it is detected that the refueling switch is closed.

5. An electronic device, comprising: An electronic device is used to diagnose an oil tank assembly, the oil tank assembly includes an oil tank and an adsorption tank, and the electronic device includes a memory and at least one processor, the memory stores a computer program, and the at least one processor implements the following steps when executing the computer program: communicating the oil tank and the adsorption tank by using a gating module, closing all switches between the oil tank assembly and the outside world after the oil tank assembly is controlled to be in a negative pressure environment or a positive pressure environment, detecting a first pressure and a second pressure of the oil tank assembly at a first time and a second time by using a pressure detection module, determining a leakage diagnosis result indicating that the oil tank and the adsorption tank do not leak when the first pressure and the second pressure meet a first preset pressure condition, and otherwise indicating that leakage occurs; The switch module is switched to a state of isolating the oil tank and the adsorption tank, so that the pressure detection module is only communicated with the adsorption tank; the adsorption tank is communicated with the engine when the engine is in an idle working condition; third and fourth pressures of the adsorption tank are respectively detected by the pressure detection module at third and fourth moments; When an absolute value of a difference between the third and fourth pressures is greater than or equal to a second preset pressure threshold, it is determined that a desorption diagnosis result indicates that the adsorption tank has desorbed; when the absolute value of the difference is less than the second preset pressure threshold, it is determined that the desorption diagnosis result indicates that the adsorption tank has not desorbed; The switch module is a multi-way valve, and the multi-way valve supports at least three state switches: a first state of communicating the oil tank, the adsorption tank and the pressure detection module, a second state of only communicating the adsorption tank and the pressure detection module, and a third state of only communicating the oil tank and the pressure detection module.

6. A diagnostic system for an oil tank assembly, the diagnostic system comprising: The oil tank assembly includes an oil tank and an adsorption tank, and the diagnosis system includes: The electronic device of claim 5; A switch module is configured to selectively communicate or isolate the oil tank and the adsorption tank; A pressure detection module is configured to detect pressure.

7. The diagnostic system of an oil tank assembly according to claim 6, wherein The pressure detection module uses a pressure sensor; When the multi-way valve is in the first state, the multi-way valve is configured to communicate the oil tank and the adsorption tank, and the pressure sensor is configured to detect pressure of the oil tank assembly; When the multi-way valve is in the second state, the multi-way valve is configured to isolate the oil tank and the adsorption tank, and the pressure sensor is configured to detect pressure of the adsorption tank.

8. A computer-readable storage medium, characterized in that, The computer readable storage medium stores a computer program, and the computer program is executed by a processor to implement steps of the method of any one of claims 1-4.

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