CN115503466A - Pressure relief monitoring method and device, vehicle and storage medium - Google Patents

Pressure relief monitoring method and device, vehicle and storage medium Download PDF

Info

Publication number
CN115503466A
CN115503466A CN202211118739.3A CN202211118739A CN115503466A CN 115503466 A CN115503466 A CN 115503466A CN 202211118739 A CN202211118739 A CN 202211118739A CN 115503466 A CN115503466 A CN 115503466A
Authority
CN
China
Prior art keywords
pressure
moment
oil tank
pressure relief
time
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN202211118739.3A
Other languages
Chinese (zh)
Other versions
CN115503466B (en
Inventor
霍振
耿伟
付亚豪
赵怀北
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Great Wall Motor Co Ltd
Original Assignee
Great Wall Motor Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Great Wall Motor Co Ltd filed Critical Great Wall Motor Co Ltd
Priority to CN202211118739.3A priority Critical patent/CN115503466B/en
Priority claimed from CN202211118739.3A external-priority patent/CN115503466B/en
Publication of CN115503466A publication Critical patent/CN115503466A/en
Application granted granted Critical
Publication of CN115503466B publication Critical patent/CN115503466B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
    • B60K15/03—Fuel tanks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
    • B60K15/03—Fuel tanks
    • B60K2015/0321—Fuel tanks characterised by special sensors, the mounting thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
    • B60K15/03—Fuel tanks
    • B60K2015/03328—Arrangements or special measures related to fuel tanks or fuel handling
    • B60K2015/03375—Arrangements or special measures related to fuel tanks or fuel handling to improve security

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Supplying Secondary Fuel Or The Like To Fuel, Air Or Fuel-Air Mixtures (AREA)

Abstract

The application provides a pressure relief monitoring method and device, a vehicle and a storage medium, and relates to the field of fuel emission control. The method is applied to an electronic control unit in an oil tank control system of an automobile, the oil tank control system further comprises a high-pressure oil tank, a high-pressure oil tank isolating valve and a pressure sensor, and the method comprises the following steps: receiving and responding to a refueling request, and starting a high-pressure oil tank isolation valve; the method comprises the steps that from the initial moment of opening the isolation valve of the high-pressure oil tank, the pressure of the high-pressure oil tank collected by a plurality of moment pressure sensors is obtained according to a preset time interval; calculating a pressure difference value between a first moment and a second moment, and judging whether the pressure difference value is smaller than a first preset value or not, wherein the first moment and the second moment are any two adjacent moments; when the pressure difference value between the first moment and the second moment is smaller than a first preset value, outputting pressure relief abnormal information and closing an isolation valve of the high-pressure oil tank; and outputting normal pressure relief information when the pressure difference between the first moment and the second moment is greater than or equal to a first preset value.

Description

Pressure relief monitoring method and device, vehicle and storage medium
Technical Field
The application relates to the technical field of fuel emission control, in particular to a pressure relief monitoring method, a pressure relief monitoring device, a vehicle and a storage medium.
Background
An Evaporative Emission Control System (EVAP) in a plug-in hybrid vehicle typically uses a high pressure fuel tank and is equipped with a high pressure fuel tank isolation valve to isolate fuel vapor in the high pressure fuel tank when the engine is not operating. When the user opened the tank cap and refueled, if the pressure in the high-pressure oil tank was too high, the phenomenon of not adding the oil feed may appear. Therefore, before a user refuels, an Electronic Control Unit (ECU) in the automobile needs to Control the opening of the high-pressure oil tank isolating valve, so as to perform pressure relief operation on the high-pressure oil tank, and ensure that the user can refuel the automobile normally.
In addition, for guaranteeing that the user can normally refuel the car to guarantee the security when refueling, still need carry out reliable, effectual monitoring to high-pressure fuel tank's pressure release process and state, avoid the potential safety hazard that the too high pressure in the high-pressure fuel tank caused.
It is to be noted that the information disclosed in the above background section is only for enhancement of understanding of the background of the present application and therefore may include information that does not constitute prior art known to a person of ordinary skill in the art.
Disclosure of Invention
The application aims to provide a pressure relief monitoring method, a pressure relief monitoring device, a vehicle and a storage medium, and the monitoring effect of the pressure relief process can be improved at least to a certain extent.
Other features and advantages of the present application will be apparent from the following detailed description, or may be learned by practice of the application.
According to a first aspect of the present application, there is provided a pressure relief monitoring method applied to an electronic control unit ECU in a tank control system of an automobile, the tank control system further including a high-pressure tank, a high-pressure tank isolation valve, and a pressure sensor, the method comprising: receiving a refueling request of a user for refueling the high-pressure fuel tank, and opening the high-pressure fuel tank isolation valve in response to the refueling request; the method comprises the steps that from the initial moment of opening the isolation valve of the high-pressure oil tank, the pressure of the high-pressure oil tank collected by the pressure sensor at multiple moments is obtained according to a preset time interval; calculating a pressure difference value between a first moment and a second moment, and judging whether the pressure difference value is smaller than a first preset value or not, wherein the first moment and the second moment are any two adjacent moments; under the condition that the pressure difference value between the first moment and the second moment is smaller than the first preset value, outputting pressure relief abnormal information, and closing the high-pressure oil tank isolation valve; and outputting normal decompression information under the condition that the pressure difference value between the first moment and the second moment is greater than or equal to the first preset value.
In the scheme, the pressure relief monitoring method applied to the electronic control unit ECU is provided, and the method calculates the pressure difference value of two adjacent moments (a first moment and a second moment) in a preset time interval, when the pressure difference value is smaller than a first preset value, the pressure value in the preset time interval is over-small in descending, at the moment, abnormal pressure relief information is output, and a high-pressure oil tank isolation valve is closed; when the pressure difference value is larger than the first preset value, the pressure value in the preset time interval is normal in descending condition, and at the moment, normal pressure relief information is output. Therefore, real-time monitoring of the pressure relief process is achieved, and a monitoring result is fed back in real time.
In an embodiment of the application, in a case that a pressure difference between the first time and the second time is smaller than the first preset value, the method further includes: determining a third moment after the second moment, wherein the pressure difference between any two moments is smaller than the first preset value in the first moment and the third moment; and determining the total time length from the first time to the third time, and judging whether the total time length is greater than a second preset value.
In an embodiment of the application, the outputting of the abnormal pressure relief information and closing of the high-pressure tank isolation valve when the pressure difference between the first time and the second time is smaller than the first preset value includes: and under the condition that the pressure difference value between the first moment and the second moment is smaller than the first preset value and the total duration is larger than the second preset value, outputting the pressure relief abnormal information and closing the high-pressure oil tank isolation valve.
In the above scheme, when the pressure difference between the first time and the second time is smaller than the first preset value, it may be further monitored whether the pressure difference after the second time is still smaller than the first preset value, and the total duration of the process from the first time is determined. And under the condition that the total duration is greater than a second preset value, the pressure value is reduced too slowly in the pressure relief process, and at the moment, abnormal pressure relief information is output, and the isolation valve of the high-pressure oil tank is closed. Therefore, the pressure value reduction rate in the pressure relief process is monitored in real time, and the monitoring result is fed back in real time.
In one embodiment of the present application, after receiving the fueling request, the method further comprises: and responding to the refueling request, and detecting whether the pressure sensor is in a normal working state.
In the scheme, the working state detection of the pressure sensor in the oil tank control system can be realized. In the above scheme, the pressure sensor is in a normal working state.
In one embodiment of the present application, the method further comprises: when the pressure sensor is in an abnormal working state, judging whether the pressure relief time length of the high-pressure oil tank is greater than a third preset value, wherein the pressure relief time length is the time length from the initial time to the current time; and under the condition that the pressure relief time is longer than the third preset value, closing the isolation valve of the high-pressure oil tank and outputting pressure relief completion information.
In the above scheme, when pressure sensor is in abnormal operation state, it indicates that pressure sensor can't measure and gather the pressure value in the high-pressure oil tank this moment, consequently can directly judge whether the pressure release process is accomplished through pressure release duration, if pressure release duration reaches the third default, then output pressure release completion information to close high-pressure oil tank isolating valve.
In one embodiment of the present application, the method further comprises: determining that the pressure of the high-pressure oil tank is released to a preset safe pressure range; and when the pressure of the high-pressure oil tank is released to a preset safe pressure range, closing the isolation valve of the high-pressure oil tank and outputting pressure release completion information.
In the above scheme, when pressure sensor was in normal operating condition, can also judge whether the pressure value in the high-pressure fuel tank reaches the safe pressure within range, if the pressure value reaches the safe pressure scope, then indicate that the pressure release is accomplished, close high-pressure fuel tank isolation valve this moment to output pressure release and accomplish information.
In one embodiment of the present application, the method further comprises: determining the pressure relief time length of the high-pressure oil tank, wherein the pressure relief time length is the time length from the initial time to the current time; and when the pressure relief duration is greater than the third preset value, closing the high-pressure oil tank isolation valve and outputting pressure relief completion information.
In the above scheme, when the pressure sensor is in a normal working state, the pressure relief duration of the pressure relief process can be determined to judge whether the pressure relief process is completed or not, if the pressure relief duration reaches a third preset value, pressure relief completion information is output, and the isolation valve of the high-pressure oil tank is closed.
According to a second aspect of the present application, there is provided a pressure relief monitoring device, the device being configured in a tank control system of a vehicle, the tank control system further comprising a high-pressure tank, a high-pressure tank isolation valve and a pressure sensor, the device comprising: a receiving module to: receiving a refueling request of a user for refueling the high-pressure fuel tank, and opening the high-pressure fuel tank isolation valve in response to the refueling request; a pressure acquisition module: for: acquiring the pressure of the high-pressure oil tank collected by the pressure sensors at a plurality of moments according to a preset time interval from the initial moment of opening the isolation valve of the high-pressure oil tank; a determination module configured to: calculating a pressure difference value between a first moment and a second moment, and judging whether the pressure difference value is smaller than a first preset value or not, wherein the first moment and the second moment are any two adjacent moments; a first output module to: under the condition that the pressure difference value between the first moment and the second moment is smaller than the first preset value, outputting pressure relief abnormal information, and closing the high-pressure oil tank isolation valve; a second output module to: and outputting normal pressure relief information under the condition that the pressure difference value between the first moment and the second moment is greater than or equal to the first preset value.
According to a third aspect of the present application there is provided a tank control system comprising a high pressure tank, a high pressure tank isolation valve and a pressure sensor, and an electronic control unit ECU capable of performing any one of the possible methods as described in the first aspect above.
According to a fourth aspect of the present application, there is provided a vehicle comprising a tank control system as described in the third aspect above, the tank control system comprising a high pressure tank, a high pressure tank isolation valve and a pressure sensor, and an electronic control unit ECU capable of performing any one of the possible methods as described in the first aspect above.
According to a fifth aspect of the present application, there is provided a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the pressure relief monitoring method of the first aspect.
The embodiment of the application provides a pressure relief monitoring method, a pressure relief monitoring device, a vehicle and a storage medium, and the method has the following technical effects:
according to the pressure relief monitoring method, the working state of the pressure sensor of the automobile oil tank control system is monitored, the pressure change condition of the high-pressure oil tank in the pressure relief process is monitored in real time when the pressure sensor works normally, and the pressure relief progress of the high-pressure oil tank is fed back to a user in real time. Firstly, the pressure change condition in the high-pressure oil tank at any time between the initial time of opening the high-pressure oil tank isolation valve and the termination time of closing the high-pressure oil tank isolation valve is monitored, the abnormal pressure relief information is timely output under the condition that the pressure difference between two adjacent times is smaller than a certain preset value, and the pressure relief result is fed back to a user, so that the safety risk is reduced, and the user experience is improved.
Besides that the pressure difference between two adjacent moments is smaller than a certain preset value, the pressure relief monitoring method monitors the duration that the pressure difference is smaller than the certain preset value from the previous moment, outputs abnormal pressure relief information in time when the duration is larger than the certain preset duration, and feeds back a pressure relief result to a user, so that the accuracy and reliability of the pressure relief process monitoring are improved, and the misjudgment probability is reduced.
Finally, the pressure relief progress of the high-pressure oil tank can be displayed in display areas such as an instrument panel of the automobile in the pressure relief monitoring process, man-machine interaction is improved, and user experience is further improved.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application. It is obvious that the drawings in the following description are only some embodiments of the application, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
FIG. 1 is a schematic block diagram of an example of a fuel tank control system provided in an embodiment of the present application;
FIG. 2 is a schematic flow chart of an example of a pressure relief monitoring method provided by an embodiment of the present application;
FIG. 3 is a schematic flow chart of an exemplary method for monitoring total pressure relief according to an embodiment of the present disclosure;
FIG. 4 is a schematic diagram illustrating an example of pressure change during pressure relief according to an embodiment of the present disclosure;
FIG. 5 is a schematic block diagram of an example of a pressure relief monitoring device provided in an embodiment of the present application;
fig. 6 is a schematic block diagram of an example of a terminal according to an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more clear, embodiments of the present application will be described in further detail below with reference to the accompanying drawings.
When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the application, as detailed in the appended claims.
In the description of the present application, it is to be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art. Further, in the description of the present application, "a plurality" means two or more unless otherwise specified. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.
Fig. 1 is a schematic structural diagram of an example of a fuel tank control system according to an embodiment of the present application.
For example, the fuel tank control system 100 described in this application refers to a fuel evaporative emission control system EVAP on a vehicle (automobile), and may be referred to as a "fuel system", "fuel evaporative system", or the like, and the embodiments of this application do not limit this.
As shown in fig. 1, the EVAP generally includes an electronic control unit 11, a high-pressure fuel tank 12, a high-pressure fuel tank isolation valve 13, a pressure sensor 14, a Canister (Carbon Canister), a Canister purge valve, and an engine. In addition, the fuel tank control system 100 may further include a Controller Area Network (CAN), that is, a CAN Network 15, and the like, for transmitting data or information interaction. The dotted line in the figure indicates the channel for transmitting the control signal, and the solid line indicates the transmission line of the substance (e.g., fuel vapor).
For example, as shown in fig. 1, the electronic Control Unit 11 may be an Engine Control Unit (ECU), which is an embedded system in an electronic system of a vehicle for controlling an electrical system, an electronic system and a subsystem of the vehicle. In modern automobiles, various electronic Control units are used, such as an engine controller (ECM or ECU), a Powertrain Controller (PCM), a Transmission Control Unit (TCM), a Brake Control Module (BCM), and the like. Where the engine controller monitors the engine via sensors to determine fueling, ignition timing, and other parameters. Information transmission among a plurality of Electronic Control Units (ECUs) on the automobile adopts a CAN network to form the ECU of the whole automobile into a network system.
Illustratively, as shown in fig. 1, the carbon canister contains activated carbon, which has an adsorption effect on the gas. After the engine stops running, gasoline vapor generated in the high-pressure oil tank 12 enters the carbon tank through a pipeline (the electronic control unit 11 controls the high-pressure oil tank isolation valve 13 to be opened), fresh air enters the carbon tank from an air port of the carbon tank, and the gasoline vapor and the fresh air are mixed and exist in the carbon tank. When the engine is started, the electronic control unit 11 controls the carbon tank flushing valve to be opened, and gasoline vapor absorbed in the carbon tank can enter the engine to participate in combustion.
Illustratively, when an automobile employs a high pressure tank 12 and a high pressure tank isolation valve 13, the accumulated high pressure gasoline vapor may be stored to relieve the canister of pressure, thereby reducing the amount of gasoline vapor that is vented to the atmosphere. However, when the user opens the fuel tank cap of the automobile to refuel, the high-pressure fuel tank 12 needs to be depressurized due to the fact that gasoline steam is stored in the high-pressure fuel tank 12, so that the pressure value in the high-pressure fuel tank 12 is within the safe pressure range, and the user can refuel the automobile normally.
In the related art, monitoring of the pressure relief process is usually based on time, that is, whether the duration of the pressure relief process reaches a certain preset value is judged, and this method does not consider that the actual change condition of the pressure may be different from the ideal change condition, and cannot monitor the pressure relief process in real time and determine the abnormal condition of the pressure value change. In addition, the current On-Board Diagnostics (OBD) can be used for diagnosing whether the high-pressure oil tank leaks or not and the isolation valve of the high-pressure oil tank, but cannot realize real-time monitoring of the pressure relief process.
In view of the problems in the related art, the application provides a pressure relief monitoring method, a pressure relief monitoring device, a terminal and an oil tank control system, so as to solve the problem that the pressure relief process cannot be monitored in real time in the related art.
Hereinafter, the steps of the pressure relief monitoring method according to the exemplary embodiment will be described in more detail with reference to the drawings and examples.
FIG. 2 schematically illustrates a flow chart of a pressure relief monitoring method according to an exemplary embodiment of the present application. The method may be applied to the electronic control unit 11 shown in fig. 1.
And S210, receiving a refueling request of a user for refueling the high-pressure oil tank, and opening the isolation valve of the high-pressure oil tank in response to the refueling request.
In one possible implementation manner, in the embodiment of the present application, the "refueling request" may be a request that triggers sending of the refueling request to the engine ECU when an operation of opening the fuel tank cap by a user is detected; alternatively, the "fueling request" may also be triggered by an operation of a user on a control panel of a vehicle machine, an instrument, or the like of the vehicle, or by an operation of pressing a mechanical key, or the like, provided in the vehicle, which is not limited in this embodiment of the application.
For example, when a user opens the tank cap to fill the fuel, the CAN network 15 sends a fuel filling request to the electronic control unit 11, and the electronic control unit 11 responds to the fuel filling request after receiving the fuel filling request, opens the high-pressure tank isolation valve 13, and starts the pressure relief process of the high-pressure tank with the time of opening the high-pressure tank isolation valve 13 as an initial time.
And S220, acquiring the pressure of the high-pressure oil tank collected by the pressure sensors at multiple moments according to a preset time interval from the initial moment of opening the isolation valve of the high-pressure oil tank.
Illustratively, reference is made to the schematic flow chart diagram of the overall pressure relief monitoring method shown in FIG. 3. After the high-pressure tank isolation valve 13 is opened, the electronic control unit 11 starts to monitor the pressure relief.
Alternatively, the pressure sensor 14 may be used to acquire the pressure values of the high-pressure oil tank 12 at different times. It will be appreciated that if it is desired to measure and collect the pressure value in the high pressure tank 12, it is necessary to ensure that the pressure sensor 14 is functioning properly. Therefore, the electronic control unit 11 may first perform step S310: and judging whether the pressure sensor is in a normal working state or not. If the pressure sensor 14 is in a normal operating state, the following monitoring procedure for the pressure relief process can be performed. The embodiment of the present application does not limit the manner of detecting the operating state of the pressure sensor 14.
Fig. 4 is a schematic diagram of a pressure change in a pressure relief process according to an example provided in the present application.
For example, as shown in fig. 4, the abscissa in fig. 4 represents time, and the ordinate represents the pressure value in the high-pressure tank 12 detected during the pressure relief process. The moment of opening the isolation valve of the high-pressure oil tank can be used as the initial moment t 0 And from an initial time t 0 The pressure in the high-pressure oil tank 12 is monitored during the pressure relief process.
Alternatively, the pressure sensor may be configured to periodically collect the pressure value in the high-pressure tank 12, or may be configured from the initial time t 0 And starting to set a preset time interval, and acquiring pressure values corresponding to different moments according to the preset time interval. For example, if the preset time interval is set to 2s, then from the initial time t 0 And acquiring pressure values at corresponding moments every 2 s.
And S230, calculating a pressure difference value between the first moment and the second moment, and judging whether the pressure difference value is smaller than a first preset value or not, wherein the first moment and the second moment are any two adjacent moments.
Illustratively, with continued reference to FIG. 3, step S320 is performed next: and judging whether the pressure difference value is smaller than a first preset value or not. The pressure difference refers to a pressure difference between any two adjacent time instants (the first time instant and the second time instant) of a preset time interval. As shown in fig. 4, e.g., t 4 And t 5 Are two moments (t) separated by a predetermined time interval 4 Is a first time t 5 Is the second time instant), t 4 Pressure value at time p 2 ，t 5 Pressure value at time p 3 Then t is 4 Time and t 5 The pressure difference at the moment is p 2 -p 3 Or p 3 -p 2 。
S240, under the condition that the pressure difference value between the first moment and the second moment is smaller than a first preset value, outputting pressure relief abnormal information, and closing an isolation valve of the high-pressure oil tank.
For example, after determining the pressure difference between the first time and the second time, it may be determined whether the pressure difference is smaller than a first preset value, so as to determine whether the gradient of the pressure drop in the high-pressure oil tank 12 is reasonable. With continued reference to FIG. 4, assume that the first preset value is 0.5kpa (or-0.5 kpa), t 1 And t 2 Are two moments (t) separated by a predetermined time interval 1 Is a first time t 2 Is the second time instant), t 1 Pressure value at time p 1 ，t 2 The pressure value at the moment is still p 1 Then t is 1 Time and t 2 The pressure difference value at the moment is 0 and is smaller than the first preset value, which indicates that the pressure value does not change in the period of time, and at the moment, the abnormal pressure relief information can be output, and the isolation valve of the high-pressure oil tank can be selectively closed.
Illustratively, with continued reference to FIG. 4, again, assuming the first preset value is still 0.5kpa (or-0.5 kpa), t is set forth above 4 Time and t 5 Pressure difference p at time 2 -p 3 Less than 0.5kpa (or p) 3 -p 2 Greater than-0.5 kpa), indicating that the pressure value also drops too small in the period of time, and at the moment, outputting abnormal pressure relief information and optionally closing the high-pressure oil tank isolation valve.
In a possible implementation manner, the manner of outputting the abnormal pressure release information in the embodiment of the present application may be displayed through a dashboard of the vehicle, a control panel of the vehicle, or output a voice prompt message through a sound box in the vehicle, and the like.
And S250, outputting normal pressure relief information under the condition that the pressure difference value between the first moment and the second moment is greater than or equal to a first preset value.
Optionally, when the pressure difference between the first time and the second time is greater than or equal to the first preset value, the monitoring of the pressure relief process is continued, and normal pressure relief information may be output. The mode of outputting the abnormal information of pressure release may be displayed through an automobile instrument panel, or the voice prompt information may be output through a sound box in the automobile, etc., and the mode of outputting the normal information of pressure release is not limited in this embodiment.
In another possible implementation manner, in addition to judging whether the descending gradient of the pressure value at the adjacent time is reasonable, the embodiment of the present application may further judge whether the rate of pressure descending is reasonable. With continued reference to fig. 3, step S330 may be performed: and judging whether the total duration is greater than a second preset value or not. The specific execution of this step is explained below.
Illustratively, as shown in FIG. 4, in determining the above t 1 Time and t 2 After the pressure difference value at the moment is smaller than the first preset value, whether the situation continues or not can be continuously judged, and whether the total duration of the situation is larger than the second preset value or not can be continuously judged. For example, the determination at t may continue 1 Whether there is a time after the time so that t 1 The pressure difference between the moment and the adjacent moment is still smaller than the first preset value. As in fig. 4, t 3 The pressure value at the moment is still p 1 And t is and t 1 Time and t 3 The pressure value between the moments is not changed and stays at p 1 Showing t 1 Time to t 3 At that moment, the pressure value in the high-pressure oil tank 12 is not changed.
Illustratively, with continued reference to FIG. 4, assume that the second predetermined value is 10s, if t 1 Time to t 3 Total time t of the moment 3 -t 1 Less than 10s indicates that the rate of pressure drop during this period is simply a short time without any reason to continue monitoring the pressure relief process. If t 1 Time to t 3 Total time t of day 3 -t 1 If the time is greater than 10S, it indicates that the pressure drop rate during the time period is abnormal, step S340 may be executed: and outputting pressure relief abnormal information, and selectively closing the high-pressure oil tank isolation valve. Wherein, please refer to the way of outputting the abnormal information of pressure releaseWith reference to the above embodiments, the description of the present embodiment is omitted.
Illustratively, with continued reference to FIG. 4, in determining t as described above 4 Time and t 5 After the pressure difference value at the moment is smaller than the first preset value, whether the situation continues or not can be continuously judged, and whether the total duration of the situation is larger than the second preset value or not can be continuously judged. For example, the determination at t may continue 4 Whether there is a time after the time so that t 4 The pressure difference between the moment and the adjacent moment is still smaller than the first preset value. As can be seen in FIG. 4, t 5 Time and t 6 The pressure difference values of the pressure values between the moments and the adjacent moments are smaller than a first preset value, which indicates that t 4 Time to t 6 The gradient of the decrease in the pressure value in the high-pressure tank 12 is always small at that time.
Illustratively, with continued reference to FIG. 4, assuming the second predetermined value is still 10s, if t is 4 Time to t 6 Total time t of the moment 4 -t 6 Less than 10s indicates that the rate of pressure drop during this period is simply a short time without any reason to continue monitoring the pressure relief process. If t 4 Time to t 6 Total time t of the moment 4 -t 6 If the time is greater than 10S, it indicates that the pressure decreasing rate in this period is abnormal, step S340 may be executed: and outputting pressure relief abnormal information, and selectively closing the high-pressure oil tank isolation valve. For the way of outputting the abnormal pressure relief information, reference is made to the above embodiments, and details are not repeated in this embodiment.
For example, as shown in fig. 3, when step S310 is executed, if the pressure sensor 14 is in the normal operating state as a result of the determination, step S350 may be further executed: calculating a pressure release progress based on the pressure, and executing step S360: and judging whether the pressure relief is finished or not. Specifically, when monitoring the pressure relief process, whether the pressure relief is completed or not can be monitored simultaneously. As shown in fig. 4, at t 7 After a certain period of time, the pressure value in the high-pressure oil tank 12 falls within the safe pressure range, which indicates that the pressure relief operation is completed, that is, the pressure relief operation is completed as a result of the determination in step S360, then step S370 may be executed:and outputting pressure relief completion information, closing the high-pressure oil tank isolation valve and allowing a user to perform oil filling operation.
Optionally, the manner of outputting the pressure release completion information may also be displayed through an automobile dashboard, or a voice prompt information is output through a sound box in the automobile, and the like.
In a possible case, if the pressure value in the high-pressure oil tank 12 has not dropped to the safe pressure range, the judgment result of step S360 is that the pressure relief is not completed, for example, at t 7 And if the pressure value before the moment is not reduced to the safe pressure range, continuing the pressure relief monitoring process.
Optionally, except that whether pressure relief is completed or not may be determined by whether the pressure value is reduced to the safe pressure range, whether pressure relief duration reaches a third preset value or not may be determined, and if the pressure relief duration reaches the third preset value, step S370 may be performed: and outputting pressure relief completion information, closing the high-pressure oil tank isolation valve and allowing a user to perform oil filling operation. The pressure relief time length is the time length from the initial time to the current time.
Illustratively, as shown in FIG. 4, assume t 7 The time is the current time, the pressure relief time is t 0 Time to t 7 Time duration t of time 7 -t 0 Assuming that the third preset value is 30s, the pressure relief time is t 7 -t 0 Reaching 30s indicates that the pressure release is complete. Please refer to the above embodiments, and details are not repeated in this embodiment.
In another possible scenario, in the step S310 in fig. 3, if it is determined that the pressure sensor 14 is in an abnormal operating state, that is, the pressure sensor 14 cannot collect the pressure value in the high-pressure oil tank 12, a standby scheme may be adopted, that is, the step S350' is executed: calculating the pressure relief progress based on time, and executing step S360: and judging whether the pressure relief is finished or not.
Specifically, it may be determined whether the pressure relief time length reaches a third preset value, and if the pressure relief time length reaches the third preset value, step S370 may be executed: and outputting pressure relief completion information, closing the high-pressure oil tank isolation valve and allowing the user to perform oil filling operation. The pressure relief time length is the time length from the initial time to the current time.
Illustratively, as shown in FIG. 4, assume t 7 The time is the current time, and the pressure relief time is t 0 Time to t t Time duration t of time 7 -t 0 Assuming that the third preset value is 30s, the pressure relief time is t 7 -t 0 Reaching 30s indicates that the pressure release is complete. For the manner of outputting the pressure release completion information, please refer to the above embodiment, which is not described in detail in this embodiment.
For example, referring to fig. 3 continuously, if the pressure relief time length has not reached the third preset value, that is, the determination result of step S360 is that the pressure relief is not completed, the pressure relief monitoring process is continued.
For example, the change process of the pressure value in the high pressure oil tank 12 during the pressure relief monitoring process can be displayed at a position such as an instrument panel in the automobile, for example, the change process of the pressure value can be represented by a pointer of the instrument panel.
The pressure relief monitoring method can monitor the pressure relief process and the pressure relief progress in real time, can feed back the pressure relief monitoring result in real time, solves the problem of a diagnosis blind area of an OBD system, can provide a reliable basis for judging whether a user can refuel an automobile or not, improves user experience, and reduces safety risks when the user refuels.
Specifically, the pressure relief monitoring method monitors the working state of a pressure sensor of an oil tank control system of an automobile, monitors the pressure change condition of a high-pressure oil tank in the pressure relief process in real time when the pressure sensor works normally, and feeds back the pressure relief progress of the high-pressure oil tank to a user in real time.
Firstly, the pressure change condition in the high-pressure oil tank at any time between the initial time of opening the high-pressure oil tank isolation valve and the termination time of closing the high-pressure oil tank isolation valve is monitored, the abnormal pressure relief information is timely output under the condition that the pressure difference between two adjacent times is smaller than a certain preset value, and the pressure relief result is fed back to a user, so that the safety risk is reduced, and the user experience is improved.
Besides that the pressure difference between two adjacent moments is smaller than a certain preset value, the pressure relief monitoring method monitors the duration that the pressure difference is smaller than the certain preset value from the previous moment, outputs abnormal pressure relief information in time when the duration is larger than the certain preset duration, and feeds back a pressure relief result to a user, so that the accuracy and reliability of the pressure relief process monitoring are improved, and the misjudgment probability is reduced.
Finally, the pressure relief progress of the high-pressure oil tank can be displayed in display areas such as an instrument panel of the automobile in the pressure relief monitoring process, man-machine interaction is improved, and user experience is further improved.
The following are embodiments of the apparatus of the present application that may be used to perform embodiments of the method of the present application. For details which are not disclosed in the embodiments of the apparatus of the present application, reference is made to the embodiments of the method of the present application.
Fig. 5 is a block diagram illustrating a pressure relief monitoring device according to an exemplary embodiment of the present application.
The pressure relief monitoring device 500 in the embodiment of the present application includes: the receiving module 510, the pressure obtaining module 520, the determining module 530, the first output module 540, and the second output module 550 cooperate with each other to execute the steps or processes executed by the electronic control unit 11 in the oil tank control system 100 of fig. 1.
Specifically, the method comprises the following steps: a receiving module 510, configured to: receiving a refueling request of a user for refueling the high-pressure fuel tank; responding to a refueling request, and opening a high-pressure oil tank isolation valve;
a pressure acquisition module 520 to: the method comprises the steps that from the initial moment of opening the isolation valve of the high-pressure oil tank, the pressure of the high-pressure oil tank collected by a plurality of moment pressure sensors is obtained according to a preset time interval;
a determining module 530 configured to: calculating a pressure difference value between a first moment and a second moment, and judging whether the pressure difference value is smaller than a first preset value or not, wherein the first moment and the second moment are any two adjacent moments;
a first output module 540, configured to: under the condition that the pressure difference value between the first moment and the second moment is smaller than a first preset value, outputting pressure relief abnormal information, and closing an isolation valve of a high-pressure oil tank;
a second output module 550, configured to: and outputting normal pressure relief information under the condition that the pressure difference value between the first moment and the second moment is greater than or equal to a first preset value.
In a possible implementation manner, the first output module 540 is further configured to: determining a third moment after the second moment, wherein the pressure difference between the first moment and any moment before the third moment is less than a first preset value; and determining the total time length from the first moment to the third moment, and judging whether the total time length is greater than a second preset value.
In a possible implementation manner, the first output module 540 is specifically configured to: and under the condition that the pressure difference value between the first moment and the second moment is smaller than a first preset value and the total duration is larger than a second preset value, outputting pressure relief abnormal information and closing the high-pressure oil tank isolation valve.
Optionally, the apparatus 500 further includes: and a detection module. The detection module is used for: and responding to the refueling request, and detecting whether the pressure sensor is in a normal working state.
In a possible implementation manner, the determining module 530 is further configured to: and when the pressure sensor is in an abnormal working state, judging whether the pressure relief time length of the high-pressure oil tank is greater than a third preset value, wherein the pressure relief time length is the time length from the initial time to the current time.
Optionally, the apparatus 500 further includes: and a third output module. The third output module is configured to: and under the condition that the pressure relief time is longer than a third preset value, closing the isolation valve of the high-pressure oil tank and outputting pressure relief completion information.
Optionally, the apparatus 500 further includes: and determining a module. The determining module is configured to: and determining the pressure relief of the high-pressure oil tank to a preset safe pressure range.
In a possible implementation manner, the third output module is further configured to: and when the pressure of the high-pressure oil tank is released to a preset safe pressure range, closing the isolation valve of the high-pressure oil tank and outputting pressure release completion information.
In a possible implementation manner, the determining module is further configured to: determining the pressure relief time of the high-pressure oil tank, wherein the pressure relief time is the time from the initial time to the current time; the third output module is further configured to: and when the pressure relief time is longer than a third preset value, closing the high-pressure oil tank isolation valve and outputting pressure relief completion information.
It should be noted that, when the pressure relief monitoring apparatus 500 provided in the foregoing embodiment executes the pressure relief monitoring method, only the division of the above functional modules is illustrated, and in practical applications, the above function distribution may be completed by different functional modules according to needs, that is, the internal structure of the device is divided into different functional modules, so as to complete all or part of the above described functions. In addition, the pressure relief monitoring apparatus 500 provided in the above embodiments and the embodiments of the pressure relief monitoring method belong to the same concept, and therefore, for details not disclosed in the embodiments of the apparatus of the present application, please refer to the embodiments of the pressure relief monitoring method described above in the present application, which are not described herein again.
The above-mentioned serial numbers of the embodiments of the present application are merely for description and do not represent the merits of the embodiments.
The embodiment of the present application further provides a vehicle, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, and when the processor executes the computer program, the steps of any of the above-mentioned method embodiments are implemented.
FIG. 6 illustrates a block diagram of a vehicle according to an exemplary embodiment of the present application. Referring to fig. 6, a vehicle 600 includes: a processor 601 and a memory 602.
In this embodiment, the processor 601 is a control center of a computer system, and may be a processor of an entity machine or a processor of a virtual machine. Processor 601 may include one or more processing cores, such as 4-core processors, 8-core processors, and so forth. The processor 601 may be implemented in at least one hardware form of Digital Signal Processing (DSP), field-Programmable gate Array (FPGA), and Programmable Logic Array (PLA). The processor 601 may also include a main processor and a coprocessor, where the main processor is a processor for processing data in a wake state, and is also called a Central Processing Unit (CPU); a coprocessor is a low power processor for processing data in a standby state.
In an embodiment of the present application, the processor 601 may execute steps or processes executed by the electronic control unit 11 in the oil tank control system 100 in fig. 1, where the processor 601 is specifically configured to:
receiving a refueling request of a user for refueling the high-pressure oil tank, and opening the high-pressure oil tank isolation valve in response to the refueling request; acquiring the pressure of the high-pressure oil tank collected by the pressure sensors at a plurality of moments according to a preset time interval from the initial moment of opening the high-pressure oil tank isolation valve; calculating a pressure difference value between a first moment and a second moment, and judging whether the pressure difference value is smaller than a first preset value or not, wherein the first moment and the second moment are any two adjacent moments; under the condition that the pressure difference value between the first moment and the second moment is smaller than the first preset value, outputting pressure relief abnormal information, and closing the high-pressure oil tank isolation valve; and outputting normal pressure relief information under the condition that the pressure difference value between the first moment and the second moment is greater than or equal to the first preset value.
Further, in an embodiment of the application, in a case that a pressure difference between the first time and the second time is smaller than the first preset value, the processor 601 is further configured to: determining a third time after the second time, wherein the pressure difference between any two times within the first time and the third time is smaller than the first preset value; and determining the total time length from the first time to the third time, and judging whether the total time length is greater than a second preset value.
Optionally, the processor 601 is specifically configured to: and under the condition that the pressure difference value between the first moment and the second moment is smaller than the first preset value and the total duration is larger than the second preset value, outputting the pressure relief abnormal information and closing the high-pressure oil tank isolation valve.
Optionally, after receiving the fueling request, the processor 601 is further configured to: and responding to the refueling request, and detecting whether the pressure sensor is in a normal working state.
Optionally, the processor 601 is further configured to: when the pressure sensor is in an abnormal working state, judging whether the pressure relief time length of the high-pressure oil tank is greater than a third preset value, wherein the pressure relief time length is the time length from the initial time to the current time; and under the condition that the pressure relief time is longer than the third preset value, closing the high-pressure oil tank isolation valve and outputting pressure relief completion information.
Optionally, the processor 601 is further configured to: determining the pressure relief of the high-pressure oil tank to a preset safe pressure range; and when the pressure of the high-pressure oil tank is released to a preset safe pressure range, closing the high-pressure oil tank isolation valve and outputting pressure release completion information.
Optionally, the processor 601 is further configured to: determining the pressure relief time length of the high-pressure oil tank, wherein the pressure relief time length is the time length from the initial time to the current time; and when the pressure relief time is longer than the third preset value, closing the high-pressure oil tank isolation valve and outputting pressure relief completion information.
The memory 602 may include one or more computer-readable storage media, which may be non-transitory. The memory 602 may also include high-speed random access memory, as well as non-volatile memory, such as one or more magnetic disk storage terminals, flash memory storage terminals. In some embodiments of the present application, a non-transitory computer readable storage medium in the memory 602 is used to store at least one instruction for execution by the processor 601 to implement a method in embodiments of the present application.
In some embodiments, the vehicle 600 further comprises: a peripheral interface 603 and at least one peripheral. The processor 601, memory 602 and peripherals interface 603 may be connected by buses or signal lines. Various peripheral devices may be connected to the peripheral interface 603 via a bus, signal line, or circuit board. Specifically, the peripheral device includes: at least one of a display screen 604, a camera 605, and an audio circuit 606.
The peripheral interface 603 may be used to connect at least one Input/Output (I/O) related peripheral to the processor 601 and the memory 602. In some embodiments of the present application, the processor 601, memory 602, and peripheral interface 603 are integrated on the same chip or circuit board; in some other embodiments of the present application, any one or both of the processor 601, the memory 602, and the peripheral interface 603 may be implemented on separate chips or circuit boards. The embodiment of the present application is not particularly limited to this.
The display screen 604 is used to display a User Interface (UI). The UI may include graphics, text, icons, video, and any combination thereof. When the display screen 604 is a touch display screen, the display screen 604 also has the ability to capture touch signals on or over the surface of the display screen 604. The touch signal may be input to the processor 601 as a control signal for processing. At this point, the display screen 604 may also be used to provide virtual buttons and/or a virtual keyboard, also referred to as soft buttons and/or a soft keyboard. In some embodiments of the present application, the display screen 604 may be one, providing the front panel of the vehicle 600; in other embodiments of the present application, the display screens 604 may be at least two, each disposed on a different surface of the vehicle 600 or in a folded design; in still other embodiments of the present application, the display screen 604 may be a flexible display screen, disposed on a curved surface or on a folded surface of the vehicle 600. Even more, the display screen 604 may be arranged in a non-rectangular irregular pattern, i.e., a shaped screen. The display screen 604 may be made of Liquid Crystal Display (LCD), organic light-emitting diode (OLED), or the like.
The camera 605 is used to capture images or video. Optionally, camera 605 includes a front camera and a rear camera. Generally, a front camera is provided on a front panel of a vehicle, and a rear camera is provided on a rear surface of the vehicle. In some embodiments, the number of the rear cameras is at least two, and the rear cameras are any one of a main camera, a depth-of-field camera, a wide-angle camera and a telephoto camera, so that the main camera and the depth-of-field camera are fused to realize a background blurring function, and the main camera and the wide-angle camera are fused to realize panoramic shooting and a Virtual Reality (VR) shooting function or other fusion shooting functions. In some embodiments of the present application, camera 605 may also include a flash. The flash lamp can be a monochrome temperature flash lamp or a bicolor temperature flash lamp. The double-color-temperature flash lamp is a combination of a warm-light flash lamp and a cold-light flash lamp, and can be used for light compensation at different color temperatures.
Audio circuitry 606 may include a microphone and a speaker. The microphone is used for collecting sound waves of a user and the environment, converting the sound waves into electric signals and inputting the electric signals to the processor 601 for processing. The microphones may be provided in plural numbers, respectively, at different portions of the vehicle 600 for the purpose of stereo sound collection or noise reduction. The microphone may also be an array microphone or an omni-directional acquisition microphone.
The power supply 607 is used to supply power to various components in the vehicle 600. The power supply 607 may be ac, dc, disposable or rechargeable. When power supply 607 includes a rechargeable battery, the rechargeable battery may be a wired rechargeable battery or a wireless rechargeable battery. The wired rechargeable battery is a battery charged through a wired line, and the wireless rechargeable battery is a battery charged through a wireless coil. The rechargeable battery may also be used to support fast charge technology.
The vehicle structure diagram shown in the embodiment of the present application does not constitute a limitation to the vehicle 600, and the vehicle 600 may include more or less components than those shown, or combine some components, or adopt a different arrangement of components.
Embodiments of the present application further provide a computer-readable storage medium, on which a computer program is stored, where the computer program is executed by a processor to implement the steps of the method of any one of the foregoing embodiments. The computer-readable storage medium may include, but is not limited to, any type of disk including floppy disks, optical disks, DVD, CD-ROMs, microdrive, and magneto-optical disks, ROMs, RAMs, EPROMs, EEPROMs, DRAMs, VRAMs, flash memory devices, magnetic or optical cards, nanosystems (including molecular memory ICs), or any type of media or device suitable for storing instructions and/or data.
In this application, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or order; the term "plurality" means two or more unless explicitly defined otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In the description of the present application, it should be understood that the terms "upper", "lower", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or unit must have a specific direction, be configured and operated in a specific orientation, and thus, should not be construed as limiting the present application.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Accordingly, all equivalent changes made by the claims of this application are intended to be covered by this application.

Claims (10)

1. A pressure release monitoring method is applied to an Electronic Control Unit (ECU) in a fuel tank control system of a vehicle, the fuel tank control system further comprises a high-pressure fuel tank, a high-pressure fuel tank isolation valve and a pressure sensor, and the method comprises the following steps:
receiving a refueling request of a user for refueling the high-pressure fuel tank, and opening the high-pressure fuel tank isolation valve in response to the refueling request;
acquiring the pressure of the high-pressure oil tank collected by the pressure sensors at a plurality of moments according to a preset time interval from the initial moment of opening the isolation valve of the high-pressure oil tank;
calculating a pressure difference value between a first moment and a second moment, and judging whether the pressure difference value is smaller than a first preset value or not, wherein the first moment and the second moment are any two adjacent moments;
under the condition that the pressure difference value between the first moment and the second moment is smaller than the first preset value, outputting pressure relief abnormal information, and closing the high-pressure oil tank isolation valve;
and outputting normal pressure relief information under the condition that the pressure difference value between the first moment and the second moment is greater than or equal to the first preset value.
2. The pressure relief monitoring method according to claim 1, wherein in case the pressure difference between said first time and said second time is smaller than said first preset value, said method further comprises:
determining a third moment after the second moment, wherein the pressure difference between any two moments is smaller than the first preset value in the first moment and the third moment;
and determining the total time length from the first moment to the third moment, and judging whether the total time length is greater than a second preset value.
3. The pressure relief monitoring method according to claim 2, wherein the step of outputting the abnormal pressure relief information and closing the high-pressure tank isolation valve when the pressure difference between the first time and the second time is smaller than the first preset value comprises the steps of:
and under the condition that the pressure difference value between the first moment and the second moment is smaller than the first preset value and the total duration is larger than the second preset value, outputting the pressure relief abnormal information and closing the high-pressure oil tank isolation valve.
4. The pressure relief monitoring method of claim 1, wherein after receiving the refueling request, the method further comprises:
and responding to the refueling request, and detecting whether the pressure sensor is in a normal working state.
5. The method of monitoring pressure relief according to claim 4, further comprising:
when the pressure sensor is in an abnormal working state, judging whether the pressure relief time length of the high-pressure oil tank is greater than a third preset value, wherein the pressure relief time length is the time length from the initial time to the current time;
and under the condition that the pressure relief time is longer than the third preset value, closing the high-pressure oil tank isolation valve and outputting pressure relief completion information.
6. The method of monitoring pressure relief according to any of claims 1-3, further comprising:
determining that the pressure of the high-pressure oil tank is released to a preset safe pressure range;
and when the pressure of the high-pressure oil tank is released to a preset safe pressure range, closing the isolation valve of the high-pressure oil tank and outputting pressure release completion information.
7. The method of monitoring pressure relief according to any of claims 1-3, further comprising:
determining the pressure relief time length of the high-pressure oil tank, wherein the pressure relief time length is the time length from the initial time to the current time;
and when the pressure relief duration is greater than the third preset value, closing the high-pressure oil tank isolation valve and outputting pressure relief completion information.
8. The utility model provides a pressure release monitoring devices, its characterized in that, the device disposes in the oil tank control system of vehicle, oil tank control system still includes high-pressure oil tank, high-pressure oil tank isolating valve and pressure sensor, the device includes:
a receiving module to: receiving a refueling request of a user for refueling the high-pressure fuel tank, and opening the high-pressure fuel tank isolation valve in response to the refueling request;
a pressure acquisition module to: acquiring the pressure of the high-pressure oil tank collected by the pressure sensors at a plurality of moments according to a preset time interval from the initial moment of opening the isolation valve of the high-pressure oil tank;
a determination module to: calculating a pressure difference value between a first moment and a second moment, and judging whether the pressure difference value is smaller than a first preset value or not, wherein the first moment and the second moment are any two adjacent moments;
a first output module to: under the condition that the pressure difference value between the first moment and the second moment is smaller than the first preset value, outputting pressure relief abnormal information, and closing the high-pressure oil tank isolation valve;
a second output module to: and outputting normal decompression information under the condition that the pressure difference value between the first moment and the second moment is greater than or equal to the first preset value.
9. A vehicle characterized by comprising a tank control system including a high pressure tank, a high pressure tank isolation valve and a pressure sensor, and an electronic control unit ECU according to any one of claims 1 to 7.
10. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the pressure relief monitoring method according to any one of claims 1 to 7.
CN202211118739.3A 2022-09-14 Pressure relief monitoring method and device, vehicle and storage medium Active CN115503466B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202211118739.3A CN115503466B (en) 2022-09-14 Pressure relief monitoring method and device, vehicle and storage medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202211118739.3A CN115503466B (en) 2022-09-14 Pressure relief monitoring method and device, vehicle and storage medium

Publications (2)

Publication Number Publication Date
CN115503466A true CN115503466A (en) 2022-12-23
CN115503466B CN115503466B (en) 2024-10-22

Family

ID=

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5524595A (en) * 1994-07-20 1996-06-11 Fuji Jukogyo Kabushiki Kaisha Evaporating fuel control system
KR19990034714A (en) * 1997-10-30 1999-05-15 정몽규 Eve Leak monitor malfunction preventing device and method
CN107972480A (en) * 2017-10-31 2018-05-01 江铃汽车股份有限公司 A kind of refueling control method, system and device of pressure-oil tank
CN113482823A (en) * 2021-07-02 2021-10-08 东风商用车有限公司 Method and device for diagnosing faults of fuel injection system and automobile with device
CN113928110A (en) * 2020-07-14 2022-01-14 广州汽车集团股份有限公司 Vehicle refueling control method and device, storage medium and system
CN114112189A (en) * 2021-11-09 2022-03-01 奇瑞汽车股份有限公司 Fault detection method, device, equipment and medium for oil tank pressure sensor

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5524595A (en) * 1994-07-20 1996-06-11 Fuji Jukogyo Kabushiki Kaisha Evaporating fuel control system
KR19990034714A (en) * 1997-10-30 1999-05-15 정몽규 Eve Leak monitor malfunction preventing device and method
CN107972480A (en) * 2017-10-31 2018-05-01 江铃汽车股份有限公司 A kind of refueling control method, system and device of pressure-oil tank
CN113928110A (en) * 2020-07-14 2022-01-14 广州汽车集团股份有限公司 Vehicle refueling control method and device, storage medium and system
CN113482823A (en) * 2021-07-02 2021-10-08 东风商用车有限公司 Method and device for diagnosing faults of fuel injection system and automobile with device
CN114112189A (en) * 2021-11-09 2022-03-01 奇瑞汽车股份有限公司 Fault detection method, device, equipment and medium for oil tank pressure sensor

Similar Documents

Publication Publication Date Title
CN109281759B (en) System and method for diagnosing leakage of oil tank by adopting pressure sensor
US8630786B2 (en) Low purge flow vehicle diagnostic tool
US20150348339A1 (en) Vehicle diagnostic data collecting apparatus, vehicle diagnostic data collecting method, vehicle diagnostic machine, and vehicle diagnosing method
US8000856B2 (en) Fuel door sensor diagnostic systems and methods
US11447012B2 (en) Display unit for displaying a remaining range in a motor vehicle
US20050278079A1 (en) Apparatus and method for displaying graphical information relating to vehicle operation
US8447505B2 (en) Method and system for extending an operating range of a motor vehicle
US20190092230A1 (en) Systems and methods for vehicle battery leak detection and mitigation
WO2021218711A9 (en) Hydrogen addition control method and system for hydrogen fuel cell vehicle, and vehicle
WO2024199305A1 (en) Engine start-stop control method and apparatus, and storage medium and vehicle
WO2023246265A1 (en) Vehicle fault alarm method and system for liquid crystal instrument system
CN109839549A (en) The method of real-time and device of vehicle activation system working condition
JP5182522B2 (en) EGR valve inspection method
WO2023231890A1 (en) Service recommendation method and related apparatus
CN114109594A (en) Engine fire diagnosis method, engine fire diagnosis device, electronic equipment and storage medium
US20150084760A1 (en) Method and system for displaying efficiency of regenerative braking for environmentally-friendly vehicle
CN115503466A (en) Pressure relief monitoring method and device, vehicle and storage medium
CN115503466B (en) Pressure relief monitoring method and device, vehicle and storage medium
JP5509046B2 (en) Fuel tank leak detection device
CN116890631A (en) Oil tank oiling control method and system
CN110823577A (en) Vehicle PCV system fault monitoring method and system, vehicle and storage medium
CN111508046B (en) Vehicle alarm icon drawing method, system and storage medium based on OpenGL
CN212685236U (en) Oil tank control system of vehicle and vehicle
US9163585B2 (en) Apparatus and method of determining a leak condition of a fuel system
KR102663204B1 (en) System of leak diagnosis of fuel supply system for vehicle and method of leak diagnosis thereof

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant