Method and device for performing cleaning of a metering unit in a vehicle

Abstract

The present invention discloses a method and a device for cleaning a metering unit in a vehicle. The method includes: obtaining predetermined information related to the metering unit and determining whether the metering unit needs to be cleaned according to the predetermined information; and in the case where it is determined that the metering unit needs to be cleaned, starting the cleaning of the metering unit. According to the method and the device for cleaning a metering unit in a vehicle of the present invention, the metering unit in the vehicle can be automatically cleaned in a timely manner, and the updated status and cleaning status of the metering unit can be updated and stored in real time, thereby ensuring the stability and safety of the metering unit.

Description

Technical Field

[0001] The present invention relates to the field of automobiles, and in particular, to a method and device for cleaning a metering unit in a vehicle. Background Art

[0002] In order to meet the gas emission requirements related to vehicles, in a vehicle, a DPM (Departronic, hydrocarbon injection system) is usually used to process the gas generated after the use oil (such as diesel) of the vehicle is burned.

[0003] The DPF (Diesel Partical Filter) in the DPM is used to carry and remove the soot particles captured from the combustibles. When the DPF is completely filled with soot particles, the DPF needs to be regenerated. In a vehicle, the DPF is usually regenerated actively and periodically. Usually, the way to regenerate the DPF is to burn out the particles on the filter at a high temperature (such as about 600 °C), and this usually requires injecting a predetermined amount of use oil (such as diesel) into the DPF to achieve. The predetermined amount of use oil is injected into the DPF through a metering unit (IU, metering unit). Therefore, the stability of the performance of the metering unit is crucial for the regeneration of the DPF, and thus for the safety of vehicle emissions.

[0004] A certain amount of use oil (such as diesel) needs to be stored in the metering unit to ensure the stability of the metering unit. Before leaving the factory, the manufacturer usually uses test oil to test the metering unit. Therefore, after leaving the factory, the metering unit usually retains test oil or usually contains a large amount of air. However, when the metering unit is used in the case where the metering unit contains test oil, risks such as safety risks will be brought to the metering unit due to the aging and high temperature of the metering unit. When the metering unit is used in the case where the metering unit contains a large amount of air, the pressure detection of the metering unit usually fails. These will bring a lot of inconvenience and even potential safety hazards to users. Therefore, it is necessary to "clean" the metering unit before using the metering unit to remove the test oil and / or air in the metering unit and inject a specified amount of use oil (such as diesel) into the metering unit, so as to make the metering unit have use stability.

[0005] However, in existing vehicles, the "cleaning" function of the metering unit is usually not supported, or the "cleaning" function is supported in the vehicle but the "cleaning" function needs to be manually triggered by the user. Therefore, there is a hidden danger that the user forgets to trigger the "cleaning" function, resulting in a use risk of the metering unit. Summary of the Invention

[0006] The object of the present invention is to provide a method and device for cleaning a metering unit in a vehicle.

[0007] According to one aspect of the present invention, there is provided a method for performing cleaning of a metering unit in a vehicle, the method comprising: obtaining predetermined information related to the metering unit and determining whether the metering unit needs to be cleaned according to the predetermined information; and in the case where it is determined that the metering unit needs to be cleaned, starting the cleaning of the metering unit.

[0008] Optionally, the step of obtaining predetermined information related to the metering unit includes: obtaining update information indicating the update status of the metering unit, the update information being first update information or second update information, wherein the first update information indicates that the metering unit has been updated, and the second update information indicates that the metering unit has not been updated; and obtaining cleaning information indicating the cleaning progress of the metering unit, wherein based on the obtained update information and / or cleaning information, it is determined whether the metering unit needs to be cleaned, and when the cleaning is completed, the update information and the cleaning information are updated and stored.

[0009] Optionally, the method further includes: before obtaining the update information and the cleaning information, determining whether the update information and the cleaning information need to be initialized, and in the case where it is determined that the update information and the cleaning information need to be initialized, initializing the update information and the cleaning information.

[0010] Optionally, the step of determining whether the update information and the cleaning information need to be initialized and, in the case where it is determined that the update information and the cleaning information need to be initialized, initializing the update information and the cleaning information includes: detecting whether the vehicle is started for the first time and / or whether the metering unit in the vehicle has been updated; in the case where it is detected that the vehicle is started for the first time or the metering unit in the vehicle has been updated, initializing the update information and storing it as the first update information, and initializing the cleaning information and storing it as cleaning information indicating that the cleaning of the metering unit has not started; in the case where it is detected that the vehicle is not started for the first time and the metering unit in the vehicle has not been updated, not changing the already stored update information and cleaning information.

[0011] Optionally, the step of determining whether the metering unit needs to be cleaned based on the obtained update information and / or cleaning information includes: in the case where the obtained update information is the first update information and / or the obtained cleaning information indicates that the cleaning of the metering unit is not completed, determining that the metering unit needs to be cleaned; in the case where the obtained update information is the second update information and the obtained cleaning information indicates that the cleaning of the metering unit has been completed, determining that the metering unit does not need to be cleaned.

[0012] Optionally, in the case where it is determined that the metering unit needs to be cleaned, cleaning the metering unit according to the cleaning progress indicated by the obtained cleaning information, and when the cleaning is completed, updating and storing the update information and the cleaning information.

[0013] Optionally, when it is determined that the metering unit needs to be cleaned, the cleaning of the metering unit is started according to the cleaning progress indicated by the obtained cleaning information; during the cleaning of the metering unit, the cleaning progress of the metering unit is detected in real time at a predetermined time interval, so as to update and store the cleaning information at the predetermined time interval according to the detected cleaning progress; when the detected cleaning progress indicates that the cleaning of the metering unit is completed, the cleaning of the metering unit is ended, and the updated information is updated and / or stored as second updated information, and the cleaning information is updated and stored as cleaning information indicating that the cleaning of the metering unit is completed; when the detected cleaning progress indicates that the cleaning of the metering unit is not completed and it is determined that a predetermined event has occurred, the cleaning of the metering unit is ended, and the updated information is updated and / or stored as second updated information, and the cleaning information is updated and stored according to the cleaning progress detected most recently.

[0014] Optionally, the predetermined event includes: the vehicle will be shut down within a predetermined time.

[0015] Optionally, the cleaning information is based on the amount of used oil that has been injected into the metering unit and / or the percentage of cleaning that has been completed, and the updated information and the cleaning information are stored in the electronic control unit (ECU) memory of the vehicle.

[0016] According to another aspect of the present invention, there is provided an apparatus for performing cleaning of a metering unit in a vehicle, the apparatus including: a first unit configured to be able to obtain predetermined information related to the metering unit and determine whether the metering unit needs to be cleaned according to the predetermined information; a second unit configured to be able to start the cleaning of the metering unit when it is determined that the metering unit needs to be cleaned.

[0017] According to another aspect of the present invention, there is provided a computer-readable recording medium storing a computer program, wherein the computer program is configured to implement the method for performing cleaning of a metering unit in a vehicle according to the present invention when executed by a processor.

[0018] According to another aspect of the present invention, there is provided a system for performing cleaning of a metering unit in a vehicle, the system including: a processor; a memory storing a computer program, which when executed by the processor, implements the method for performing cleaning of a metering unit in a vehicle according to the present invention.

[0019] According to the method and apparatus for performing cleaning of a metering unit in a vehicle according to the present invention, the metering unit in the vehicle can be automatically cleaned in a timely manner, and the updated state and cleaning state of the metering unit can be updated and stored in real time, thereby ensuring the stability and safety of the metering unit. Brief Description of the Drawings

[0020] The foregoing and other aspects of the present invention will be more fully understood from the following detailed description taken in conjunction with the accompanying drawings, which include:

[0021] Figure 1 A flowchart showing a method for performing cleaning of a metering unit in a vehicle according to an exemplary embodiment of the present invention.

[0022] Figure 2 A detailed flowchart showing a method for performing cleaning of a metering unit in a vehicle according to an exemplary embodiment of the present invention.

[0023] Figure 3 A flowchart showing the steps of cleaning the metering unit in a method for performing cleaning of a metering unit in a vehicle according to an exemplary embodiment of the present invention.

[0024] Figure 4 A block diagram showing an apparatus for performing cleaning of a metering unit in a vehicle according to an exemplary embodiment of the present invention. Detailed Description of the Invention

[0025] Hereinafter, some exemplary embodiments of the present invention will be described in more detail with reference to the accompanying drawings, so as to better understand the basic idea and advantages of the present invention.

[0026] Figure 1 A flowchart showing a method for performing cleaning of a metering unit in a vehicle according to an exemplary embodiment of the present invention.

[0027] According to the present invention, the metering unit may be a metering unit for vehicle exhaust aftertreatment, such as for DPF regeneration, in any type of vehicle. In addition, it should be understood that the metering unit may also be a metering unit for other uses of other components of the vehicle.

[0028] Referring to Figure 1 , in step S1, predetermined information related to the metering unit is obtained.

[0029] In step S2, it is determined whether the metering unit needs to be cleaned according to the predetermined information.

[0030] If it is determined in step S2 that the metering unit needs to be cleaned ("Y"), then step S3 is executed to start cleaning the metering unit.

[0031] If it is determined in step S2 that the metering unit does not need to be cleaned ("N"), then the method according to the present invention ends.

[0032] Figure 2A detailed flowchart of a method for performing cleaning of a metering unit in a vehicle according to an exemplary embodiment of the present invention is shown.

[0033] In step S11, update information indicating the update status of the metering unit is obtained. As an example, the update information can be obtained when the vehicle is turned on, so as to be able to determine the update status of the metering unit in a timely manner, and then clean the metering unit that needs to be cleaned in a timely manner.

[0034] Here, the update status of the metering unit can indicate whether the metering unit is a new metering unit. For example, whether the metering unit in the vehicle has been replaced with a new metering unit. As an example, the update information can include: first update information or second update information, where the first update information can indicate that the metering unit has been updated, and the second update information can indicate that the metering unit has not been updated. In other words, the first update information can indicate that when the vehicle is turned on, the metering unit in the vehicle is a new metering unit, and the second update information can indicate that when the vehicle is turned on, the metering unit in the vehicle is not a new metering unit. For example, "FALSE" can be used to represent the first update information, and "TRUE" can be used to represent the second update information.

[0035] In step S12, cleaning information indicating the degree of cleaning of the metering unit is obtained.

[0036] Here, it can be known whether the metering unit has been cleaned and the degree of cleaning according to the cleaning information indicating the degree of cleaning of the metering unit. As an example, the cleaning information can be determined based on the amount of used oil that has been injected into the metering unit, the percentage of cleaning that has been completed, or any other information that can represent the cleaning progress.

[0037] For example, when the cleaning information is represented by the amount of used oil that has been injected into the metering unit, if the amount of used oil that has been injected into the metering unit reaches the predetermined threshold of the used oil, the cleaning information can indicate that the cleaning of the metering unit has been completed; if the amount of used oil that has been injected into the metering unit is zero, the cleaning information can indicate that the cleaning of the metering unit has not started; if the amount of used oil that has been injected into the metering unit is less than the predetermined threshold and greater than zero, the cleaning information can indicate that the cleaning of the metering unit has started but not been completed, and the difference relationship between the amount of used oil that has been injected into the metering unit and the predetermined threshold can represent the cleaning progress.

[0038] The update information and cleaning information obtained here can be used to determine whether the metering unit needs to be cleaned in subsequent step S3, so that if the metering unit needs to be cleaned, the cleaning of the metering unit can be completed within a short time after the vehicle is turned on, thus ensuring the stability and safety of the metering unit.

[0039] For example, when the fuel used in the vehicle is diesel, the predetermined threshold of the diesel to be injected into the metering unit may be 50 grams, and the time usually required to complete the cleaning of the metering unit is only 1 minute. However, it should be understood that this is only an example, and the fuel used in the vehicle, the said predetermined threshold, and the cleaning time can be set according to the actual situation of the vehicle.

[0040] In the above example, the vehicle can usually complete the cleaning of the metering unit within a very short time after startup. However, in actual operation, there may still be a situation where the vehicle needs to be shut down during the cleaning of the metering unit in the last startup state of the vehicle, and thus the cleaning of the metering unit needs to be stopped halfway, that is, there may be a situation where the cleaning of the metering unit has started in the last startup state of the vehicle but has not been completed before the vehicle is shut down. Therefore, storing the cleaning information is beneficial to more effective cleaning of the metering unit in the future.

[0041] As an example, the above update information and cleaning information can be read from the memory of the vehicle's electronic control unit (ECU). The obtained update information and cleaning information can be the update information and cleaning information updated and stored in the ECU memory when the vehicle was last shut down, or can be the update information and cleaning information initialized and stored in the ECU memory according to the vehicle state when the vehicle is started this time.

[0042] Therefore, as an example, the method for performing the cleaning of the metering unit in a vehicle according to the present invention may further include the following steps: before obtaining the update information and cleaning information, determining whether it is necessary to initialize the update information and cleaning information, and in the case where it is determined that the update information and cleaning information need to be initialized, initializing the update information and cleaning information. As an example, this step may include the following steps:

[0043] Detecting whether the vehicle is started for the first time and / or whether the metering unit in the vehicle has been updated; in the case where it is detected that the vehicle is started for the first time or the metering unit in the vehicle has been updated, initializing the update information and storing it as the first update information, and initializing the cleaning information and storing it as the cleaning information indicating that the cleaning of the metering unit has not started; in the case where it is detected that the vehicle is not started for the first time and the metering unit in the vehicle has not been updated, not changing the already stored update information and cleaning information.

[0044] That is to say, when it is determined that the vehicle is started for the first time and / or it is detected that the metering unit in the vehicle is replaced with a new metering unit, since the state of the metering unit is the factory state at this time, that is, the metering unit may contain factory test oil or a large amount of air, therefore, the update status of the metering unit can be initialized in the ECU memory of the vehicle and stored as the first update information, that is, the information indicating that the metering unit in the vehicle is a new metering unit. At the same time, the cleaning information of the metering unit can be initialized in the ECU memory of the vehicle and stored as the cleaning information indicating that the cleaning of the metering unit has not started yet. In the case where it is detected that the vehicle is not started for the first time and the metering unit in the vehicle has not been updated, it means that the metering unit in the vehicle is not a new metering unit compared to the last time the vehicle was started, so the already stored update information and cleaning information can be maintained. It should be understood that the update information and the cleaning information can be stored in any storage device with a storage function, and when the storage device storing the update information and the cleaning information is replaced, the already stored update information and cleaning information can be stored in the new storage device after replacement.

[0045] In step S2, based on the obtained update information and / or cleaning information, determine whether the metering unit needs to be cleaned.

[0046] Since the update information can indicate whether the metering unit is a new metering unit, and the cleaning information can indicate whether the metering unit has been cleaned and the progress of the cleaning, therefore, it can be determined whether the metering unit needs to be cleaned according to the update information and / or the cleaning information.

[0047] As an example, in step S2, when the obtained update information is the first update information and / or the obtained cleaning information indicates that the cleaning of the metering unit is not completed, it can be determined that the metering unit needs to be cleaned ("Y"); when the obtained update information is the second update information and the obtained cleaning information indicates that the cleaning of the metering unit has been completed, it can be determined that the metering unit does not need to be cleaned ("N").

[0048] In other words, when the obtained update information indicates that the metering unit is a new metering unit and / or the obtained update information indicates that the cleaning of the metering unit has not started, or when the obtained update information indicates that the metering unit is not a new metering unit and the obtained cleaning information indicates that the cleaning of the metering unit is not completed, it can be determined that the metering unit needs to be cleaned. In other cases, it can be determined that the metering unit does not need to be cleaned.

[0049] If it is determined in step S2 that the metering unit needs to be cleaned, then step S3 is executed: start the cleaning of the metering unit, and when the cleaning is completed, update and store the update information and the cleaning information.

[0050] As an example, when it is determined that the metering unit needs to be cleaned, in step S3, the metering unit can be cleaned according to the cleaning progress indicated by the acquired cleaning information, and when the cleaning is completed, the update information and the cleaning information are updated and stored.

[0051] For example, when the cleaning progress indicated by the cleaning information is that the cleaning has not started yet, the metering unit can be drained (test oil), exhausted, and refilled (with service oil (e.g., diesel)). When the cleaning progress indicated by the cleaning information is that the cleaning has started but not been completed, only the metering unit can be refilled (with service oil (e.g., diesel)).

[0052] Figure 3 The flowchart shows step S3 of cleaning the metering unit in a method for performing cleaning of the metering unit in a vehicle according to an exemplary embodiment of the present invention.

[0053] In step S31, when it is determined that the metering unit needs to be cleaned, the cleaning of the metering unit can be started according to the cleaning progress indicated by the acquired cleaning information.

[0054] For example, in the previous example, when the service oil is diesel and the predetermined threshold of the service oil is 50 grams, if 5 grams of the service oil has been injected into the metering unit, the refilling process can be started to continue injecting 45 grams of oil into the metering unit to complete the cleaning of the metering unit.

[0055] In step S32, during the cleaning of the cleaning unit, the cleaning progress of the metering unit is detected in real time at a predetermined time interval, so as to update and store the cleaning information at the predetermined time interval according to the detected cleaning progress.

[0056] For example, in the case of the above example, the predetermined time interval can be 1 second. It should be understood that this is only an example, and the predetermined time interval can be any time interval selected according to actual use.

[0057] In step S33, it is determined whether the cleaning of the metering unit has been completed according to the detected cleaning progress.

[0058] If it is determined in step S33 that the detected cleaning progress indicates the completion of cleaning ("Y"), step S35 is executed: end the cleaning of the metering unit, and update and store the update information and the cleaning information. As an example, at this time, the update information can be updated and / or stored as the second update information, and the cleaning information is updated and stored as the cleaning information indicating that the cleaning of the metering unit has been completed.

[0059] Here, it should be understood that when the update information is already the second update information, that is, indicating that the metering unit is not a new metering unit, it may not be necessary to modify the update information, or the update information may be updated and stored as the second update information directly regardless of the stored update information.

[0060] For example, in the foregoing example, when the used oil is diesel and the predetermined threshold of the used oil is 50 grams, if it is detected that the used oil injected into the metering unit is 50 grams, the cleaning of the metering unit can be ended.

[0061] If it is determined in step S33 that the detected cleaning progress indicates that the cleaning of the metering unit has not been completed ("N"), then step S34 is executed: determining whether a predetermined event has occurred.

[0062] If it is determined in step S34 that a predetermined event has occurred ("Y"), then step S35 is executed to end the cleaning of the metering unit, and the update information and the cleaning information are updated and stored. As an example, at this time, the update information can be updated and / or stored as the second update information, and the cleaning information can be updated and stored according to the most recently detected cleaning progress. If it is determined in step S34 that no predetermined event has occurred ("N"), return to step S32.

[0063] As an example, the predetermined event may include: the vehicle will be turned off within a predetermined time.

[0064] In other words, when it is detected that the vehicle is about to be turned off, the cleaning of the metering unit can be ended immediately, and the cleaning information can be updated and stored according to the current cleaning progress, so that the cleaning of the metering unit can be continued when the vehicle is turned on next time.

[0065] For example, in the foregoing example, when the used oil is diesel and the predetermined threshold of the used oil is 50 grams, if it is determined that a predetermined event has occurred when it is detected that the used oil injected into the metering unit is 30 grams, the cleaning of the metering unit is ended, and the update information is updated and / or stored as the second update information, and the cleaning information is updated and stored as the cleaning information corresponding to 30 grams of used oil injected.

[0066] According to the method for cleaning the metering unit in a vehicle of the present invention, the metering unit in the vehicle can be automatically cleaned in a timely manner, and the update status and cleaning status of the metering unit can be updated and stored in real time, thereby ensuring the stability and safety of the metering unit.

[0067] Figure 4 The block diagram of a device for cleaning the metering unit in a vehicle according to an exemplary embodiment of the present invention is shown.

[0068] Refer to Figure 4According to an exemplary embodiment of the present invention, a device for performing cleaning of a metering unit in a vehicle comprises: a first unit 1 and a second unit 2 .

[0069] The first unit 1 is configured to be able to obtain predetermined information related to the metering unit, and determine whether the metering unit needs to be cleaned according to the predetermined information.

[0070] The first unit 2 is configured to start cleaning of the metering unit when it is determined that the metering unit needs to be cleaned.

[0071] Here, we have referred to the above Figures 1 to 3 The updating information, cleaning information, the process of determining whether the metering unit needs to be cleaned, the process of cleaning the metering unit, and the process of updating and storing the updating information and cleaning information are described in detail and will not be repeated here.

[0072] According to the device for performing cleaning of the metering unit in the vehicle of the present invention, the metering unit in the vehicle can be cleaned automatically and timely, and the update status and cleaning status of the metering unit can be updated and stored in real time, thereby ensuring the stability and safety of the metering unit.

[0073] According to an exemplary embodiment of the present invention, a system for performing cleaning of a metering unit in a vehicle is also provided. The system for performing cleaning of a metering unit in a vehicle comprises a processor and a memory. The memory is configured to be able to store a computer program. The computer program can be executed by the processor to implement a method for performing cleaning of a metering unit in a vehicle according to the present invention.

[0074] According to an exemplary embodiment of the present invention, a computer-readable recording medium storing a computer program is also provided, wherein the computer program is configured to implement a method for performing cleaning of a metering unit in a vehicle according to the present invention when executed by a processor. The computer-readable recording medium is any data storage device that can store data read out by a computer system. Examples of computer-readable recording media include: read-only memory, random access memory, read-only optical disk, magnetic tape, floppy disk, optical data storage device, and carrier wave (such as data transmission through the Internet via a wired or wireless transmission path). The computer-readable recording medium can also be distributed to computer systems connected to the network, so that the computer-readable code is stored and executed in a distributed manner. In addition, the functional programs, codes, and code segments that complete the present invention can be easily interpreted by ordinary programmers in the field related to the present invention within the scope of the present invention.

[0075] In addition, each unit in the above-described device and equipment according to an exemplary embodiment of the present invention can be implemented as a hardware component or a software module. Further, those skilled in the art can implement each unit by, for example, using a field programmable gate array (FPGA), an application specific integrated circuit (ASIC), or a processor according to the processing performed by the defined respective units.

[0076] Although the present invention has been illustrated and described with reference to specific embodiments herein, the present invention is not limited to the details shown. Rather, various modifications can be made to these details within the scope of the present invention.

[0077] List of Reference Numerals

[0078] S1 Obtain predetermined information related to the metering unit

[0079] S2 Determine whether the metering unit needs to be cleaned according to the predetermined information

[0080] S3 Clean the metering unit

[0081] S11 Obtain update information indicating the update status of the metering unit

[0082] S12 Obtain cleaning information indicating the degree of cleaning of the metering unit

[0083] S31 Start cleaning the metering unit according to the cleaning progress indicated by the obtained cleaning information

[0084] S32 Detect the cleaning progress of the metering unit in real time at a predetermined time interval and update the cleaning information

[0085] S33 Determine whether the cleaning of the metering unit has been completed according to the detected cleaning progress

[0086] S34 Determine whether a predetermined event has occurred

[0087] S35 End the cleaning of the metering unit and update and store the update information and the cleaning information

[0088] Y Yes

[0089] N No

[0090] 1 First Unit

[0091] 2 Second Unit

Claims

1. A method for performing cleaning of a metering unit in a vehicle, the method comprising: Obtaining predetermined information related to the metering unit, and determining whether the metering unit needs to be cleaned according to the predetermined information; And When it is determined that the metering unit needs to be cleaned, starting the cleaning of the metering unit, wherein the step of obtaining predetermined information related to the metering unit includes: Obtaining update information indicating the update status of the metering unit, the update information being first update information or second update information, wherein the first update information indicates that the metering unit has been updated, and the second update information indicates that the metering unit has not been updated; and Obtaining cleaning information indicating the cleaning progress of the metering unit, wherein, based on the obtained update information and cleaning information, it is determined whether the metering unit needs to be cleaned, When the cleaning ends, the update information and the cleaning information are updated and stored.

2. The method according to claim 1, wherein The method further includes: Before obtaining the update information and the cleaning information, determining whether the update information and the cleaning information need to be initialized, and when it is determined that the update information and the cleaning information need to be initialized, initializing the update information and the cleaning information.

3. The method according to claim 2, wherein The step of determining whether the update information and the cleaning information need to be initialized and, when it is determined that the update information and the cleaning information need to be initialized, initializing the update information and the cleaning information includes: Detecting whether the vehicle is started for the first time and whether the metering unit in the vehicle has been updated; When it is detected that the vehicle is started for the first time or the metering unit in the vehicle has been updated, initializing the update information and storing it as the first update information, and initializing the cleaning information and storing it as cleaning information indicating that the cleaning of the metering unit has not started; When it is detected that the vehicle is not started for the first time and the metering unit in the vehicle has not been updated, the already stored update information and cleaning information are not changed.

4. The method according to claim 1, wherein The step of determining whether the metering unit needs to be cleaned based on the obtained update information and cleaning information includes: When the obtained update information is the first update information or the obtained cleaning information indicates that the cleaning of the metering unit is not completed, determining that the metering unit needs to be cleaned; When the obtained update information is the second update information and the obtained cleaning information indicates that the cleaning of the metering unit has been completed, determining that the metering unit does not need to be cleaned.

5. The method according to claim 1, wherein When it is determined that the metering unit needs to be cleaned, cleaning the metering unit according to the cleaning progress indicated by the obtained cleaning information, and when the cleaning ends, updating and storing the update information and the cleaning information.

6. The method according to claim 5, wherein, When it is determined that the metering unit needs to be cleaned, starting the cleaning of the metering unit according to the cleaning progress indicated by the obtained cleaning information; During the cleaning of the metering unit, detecting the cleaning progress of the metering unit at a predetermined time interval in real time, so as to update and store the cleaning information at the predetermined time interval according to the detected cleaning progress; When it is detected that the cleaning of the metering unit indicated by the cleaning progress has been completed, end the cleaning of the metering unit, update and store the update information as the second update information, and update and store the cleaning information as the cleaning information indicating that the cleaning of the metering unit has been completed. When it is detected that the cleaning of the metering unit indicated by the cleaning progress has not been completed and a predetermined event is determined to have occurred, end the cleaning of the metering unit, update and store the update information as the second update information, and update and store the cleaning information based on the most recently detected cleaning progress.

7. The method according to claim 6, wherein, The predetermined event includes: the vehicle will be shut down within a predetermined time.

8. The method according to any one of claims 1 to 7, wherein, The cleaning information is based on the amount of used oil that has been injected into the metering unit and / or the percentage of cleaning that has been completed. The update information and the cleaning information are stored in the electronic control unit (ECU) memory of the vehicle.

9. An apparatus for performing cleaning of a metering unit in a vehicle, the apparatus comprising: A first unit configured to be able to obtain predetermined information related to the metering unit and determine whether cleaning of the metering unit is required based on the predetermined information; A second unit configured to be able to initiate cleaning of the metering unit when it is determined that cleaning of the metering unit is required, wherein the step of obtaining predetermined information related to the metering unit includes: Obtaining update information indicating the update status of the metering unit, the update information being the first update information or the second update information, wherein the first update information indicates that the metering unit has been updated and the second update information indicates that the metering unit has not been updated; and Obtaining cleaning information indicating the cleaning progress of the metering unit, wherein based on the obtained update information and cleaning information, it is determined whether cleaning of the metering unit is required, When ending the cleaning, update and store the update information and the cleaning information.

10. A computer-readable recording medium storing a computer program, wherein, The computer program is configured to implement the method according to any one of claims 1 to 8 when executed by a processor.

11. A system for performing cleaning of a metering unit in a vehicle, the system comprising: A processor; A memory storing a computer program, which when executed by the processor, implements the method according to any one of claims 1 to 8.

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