Detection method and device for injection system in vehicle, processor and electronic equipment

Abstract

The invention discloses a detection method and device for an injection system in a vehicle, a processor and electronic equipment, and the method comprises the steps that pressure data of a tail gas treatment object injected by the injection system is obtained, the pressure data is used for representing the pressure borne by the tail gas treatment object in the flowing process of a flowing path, and the pressure data is used for representing the pressure borne by the tail gas treatment object; the flow path is located between the injection system and a tail gas exhaust system of the vehicle; based on the pressure data and the duty data of the injection system, the pressure change state of the tail gas treatment object is determined; based on the pressure change state, the injection function of the injection system is detected, and a function detection result is obtained; and on the basis of the function detection result, prompt information is output and used for prompting whether the injection system needs to be maintained or not. The technical problem that the real-time performance of maintenance detection of the injection system in the vehicle is poor is solved.

Description

Technical Field

[0001] This application relates to the field of vehicles, and more specifically, to a method, apparatus, processor, and electronic device for detecting an injection system in a vehicle. Background Technology

[0002] Currently, to meet increasingly stringent emission standards, vehicle manufacturers typically use urea systems to purify nitrogen oxides from vehicle exhaust. To ensure the efficiency of nitrogen oxide purification, regular maintenance of the urea system components is necessary.

[0003] However, in related technologies, maintenance reminders for the injection system in a urea system often rely on fixed time intervals or mileage, or require manual inspection by the user. These traditional reminder methods suffer from the drawback of untimely or excessive filter maintenance, resulting in poor real-time performance of maintenance checks on the vehicle's injection system.

[0004] There is currently no effective solution to the technical problem of poor real-time performance in the maintenance and inspection of the injection system in the aforementioned vehicles. Summary of the Invention

[0005] This application provides a method, apparatus, processor, and electronic device for detecting injection systems in vehicles, to at least solve the technical problem of poor real-time performance in the maintenance and detection of injection systems in vehicles.

[0006] According to one aspect of the embodiments of this application, a detection method for an injection system in a vehicle is provided. The method includes: acquiring pressure data of an exhaust gas treatment object injected by the injection system, wherein the pressure data represents the pressure experienced by the exhaust gas treatment object during flow along a flow path, the flow path being between the injection system and the vehicle's exhaust gas discharge system; determining the pressure change state of the exhaust gas treatment object based on the pressure data and the duty cycle data of the injection system, wherein the duty cycle data represents the proportion of the injection system's operating time to the injection cycle, and the pressure change state represents the pressure change state during the injection of the exhaust gas treatment object by the injection system; detecting the injection function of the injection system based on the pressure change state to obtain a function detection result, wherein the function detection result represents whether the injection function is a normal injection function or an abnormal injection function; and outputting a prompt message based on the function detection result, wherein the prompt message indicates whether the injection system requires maintenance.

[0007] Optionally, the pressure data includes: multiple first pressure data and multiple second pressure data. The first pressure data represents the first pressure experienced by the exhaust gas treatment object during its flow path at the injection shutdown time. The second pressure data represents the second pressure experienced by the exhaust gas treatment object during its flow path at the injection opening time. The injection shutdown time is later than the injection opening time, the injection cycle includes the injection shutdown time and the injection opening time, and the first pressure is greater than the second pressure. Determining the pressure change state of the exhaust gas treatment object based on the pressure data and the duty cycle data of the injection system includes: determining the pressure difference between the first pressure represented by the multiple first pressure data and the second pressure represented by the multiple second pressure data to obtain multiple pressure differences; and determining the pressure change state based on the multiple pressure differences and the duty cycle data.

[0008] Optionally, determining the pressure change state based on multiple pressure differences and duty cycle data includes: determining multiple target pressure differences from the multiple pressure differences, wherein the time corresponding to the multiple target pressure differences is later than the time corresponding to the remaining pressure differences other than the multiple target pressure differences; determining the average pressure difference among the multiple target pressure differences; and determining the pressure change state based on the average pressure difference and the preset pressure difference in response to the duty cycle data being within a preset duty cycle interval.

[0009] Optionally, in response to the duty cycle data being within a preset duty cycle interval, the pressure change state is determined based on the average pressure difference and a preset pressure difference, including: in response to the duty cycle data being within the preset duty cycle interval and the average pressure difference being greater than the preset pressure difference, determining the pressure change state as an abnormal pressure change state, wherein the abnormal pressure change state is used to represent the abnormal pressure change state during the process of the injection system injecting exhaust gas to treat the object; in response to the duty cycle data being within the preset duty cycle interval and the average pressure difference being less than or equal to the preset pressure difference, determining the pressure change state as a normal pressure change state, wherein the normal pressure change state is used to represent the normal pressure change state during the process of the injection system injecting exhaust gas to treat the object.

[0010] Optionally, based on the pressure change state, the injection function of the injection system is detected to obtain a function detection result, including: responding to an abnormal pressure change state, the injection function is detected to obtain a first function detection result, wherein the abnormal pressure change state is used to indicate the abnormal pressure change state during the injection of exhaust gas treatment objects by the injection system, and the first function detection result is used to indicate that the injection function is an abnormal injection function; responding to a normal pressure change state, the injection function is detected to obtain a second function detection result, wherein the normal pressure change state is used to indicate the normal pressure change state during the injection of exhaust gas treatment objects by the injection system, and the second function detection result is used to indicate that the injection function is a normal injection function.

[0011] Optionally, based on the functional detection result, output prompt information, including: responding to the functional detection result being a first functional detection result, outputting prompt information as a first prompt information, wherein the first functional detection result is used to indicate that the injection function is an abnormal injection function, and the first prompt information is used to prompt the injection system to perform maintenance operations; responding to the functional detection result being a second functional detection result, outputting prompt information as a second prompt information, and obtaining the next pressure data of the pressure data, using the next pressure data as the pressure data, and returning to perform the following steps: based on the pressure data, determining the pressure change state of the exhaust gas treatment object, wherein the second functional detection result is used to indicate that the injection function is a normal injection function, and the second prompt information is used to prompt the injection system to perform no maintenance operations.

[0012] Optionally, the method further includes: responding to the completion of maintenance operations on the injection system, detecting the injection function of the injection system after maintenance to obtain a maintenance function detection result, wherein the maintenance function detection result is used to indicate whether the injection function of the injection system after maintenance is a normal injection function or an abnormal injection function; responding to the maintenance function detection result being a first maintenance function detection result, ending the maintenance process, wherein the first maintenance function detection result is used to indicate that the injection function of the injection system after maintenance is a normal injection function; responding to the maintenance function detection result being a second maintenance function detection result, outputting a third prompt message, wherein the second maintenance function detection result is used to indicate that the injection function of the injection system after maintenance is an abnormal injection function, and the third prompt message is used to indicate that a maintenance abnormality event has occurred in the injection system after maintenance.

[0013] According to one aspect of the embodiments of this application, a detection device for an injection system in a vehicle is provided. The device includes: an acquisition unit, configured to acquire pressure data of an exhaust gas treatment object injected by the injection system, wherein the pressure data represents the pressure experienced by the exhaust gas treatment object during flow along a flow path, the flow path being located between the injection system and the vehicle's exhaust gas discharge system; a determination unit, configured to determine the pressure change state of the exhaust gas treatment object based on the pressure data and the duty cycle data of the injection system, wherein the duty cycle data represents the ratio between the number of times the injection system is opened and closed during the injection cycle, and the pressure change state represents the pressure change state during the injection of the exhaust gas treatment object by the injection system; a detection unit, configured to detect the injection function of the injection system based on the pressure change state, and obtain a function detection result, wherein the function detection result represents whether the injection function is a normal injection function or an abnormal injection function; and an output unit, configured to output a prompt message based on the function detection result, wherein the prompt message indicates whether the injection system requires maintenance.

[0014] According to another aspect of the embodiments of this application, a processor is also provided. The processor is used to run a program, wherein the program, when run by the processor, executes the detection method for the injection system in a vehicle according to the embodiments of this application.

[0015] According to another aspect of the embodiments of this application, an electronic device is also provided, including: a memory storing an executable program; and a processor for running the program, wherein the program executes the detection method of the injection system in a vehicle according to various embodiments of this application when it runs.

[0016] According to another aspect of the embodiments of this application, a computer-readable storage medium is also provided. The computer-readable storage medium includes a stored program, wherein, when the program is executed, it controls the device where the computer-readable storage medium is located to perform the vehicle injection system detection method of the embodiments of this application.

[0017] According to another aspect of the embodiments of this application, a computer program product is also provided, the computer program product including a computer program, wherein the computer program, when executed by a processor, implements the detection method of the injection system in a vehicle according to the embodiments of this application.

[0018] According to another aspect of the embodiments of this application, a computer program product is also provided, including a non-volatile computer-readable storage medium for storing a computer program, which, when executed by a processor, implements the detection method of the injection system in a vehicle according to the embodiments of this application.

[0019] According to another aspect of the embodiments of this application, a computer program is also provided, which, when executed by a processor, implements the vehicle injection system detection method described in the embodiments of this application above.

[0020] In this embodiment, when inspecting the injection system in a vehicle, pressure data of the exhaust gas being treated by the injection system is acquired; based on the pressure data and the duty cycle data of the injection system, the pressure change state of the exhaust gas being treated is determined; based on the pressure change state, the injection function of the injection system is detected to obtain a function detection result; based on the function detection result, a prompt message is output. In other words, in this embodiment, by combining the acquired pressure data and the duty cycle data of the injection system, the pressure change state of the exhaust gas being treated can be determined. By detecting the injection function of the injection system based on the aforementioned pressure state changes, a function detection result indicating whether the injection function is normal or abnormal can be obtained. Finally, based on the aforementioned function detection result, a prompt message can be output, thereby achieving the goal of avoiding untimely or excessive maintenance of the injection system, solving the technical problem of poor real-time performance in the maintenance and inspection of the injection system in vehicles, and realizing the technical effect of improving the real-time performance of the maintenance and inspection of the injection system in vehicles. Attached Figure Description

[0021] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0022] Figure 1 This is a flowchart of a detection method for an injection system in a vehicle according to an embodiment of this application;

[0023] Figure 2 This is a flowchart of an intelligent maintenance reminder method for a gas-driven urea system according to an embodiment of this application;

[0024] Figure 3 This is a schematic diagram of a detection device for an injection system in a vehicle according to an embodiment of this application;

[0025] Figure 4 This is a schematic diagram of an electronic device according to an embodiment of this application. Detailed Implementation

[0026] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present application.

[0027] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0028] According to an embodiment of this application, a method for detecting an injection system in a vehicle is provided. It should be noted that the steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions. Furthermore, although a logical order is shown in the flowchart, in some cases, the steps shown or described may be executed in a different order than that shown here.

[0029] This embodiment provides a method for detecting the injection system in a vehicle. Figure 1 This is a flowchart of a detection method for an injection system in a vehicle according to an embodiment of this application, such as... Figure 1 As shown, the method may include the following steps.

[0030] Step S101: Obtain the pressure data of the exhaust gas treatment object injected by the injection system.

[0031] In the technical solution provided in step S101 of this application, the pressure data can be used to represent the pressure experienced by the exhaust gas treatment object during its flow along the flow path. The flow path is located between the injection system and the vehicle's exhaust gas discharge system. For example, the flow path can be the transmission path of the vehicle's liquid transmission pipeline, which can be used to connect the air-driven injection system and the exhaust gas discharge system.

[0032] In this embodiment, the injection system can be used to spray the exhaust gas to be treated. For example, the injection system can be a gas-driven urea system.

[0033] In this embodiment, the exhaust gas treatment object can be used to purify pollutants in the exhaust gas of the vehicle. For example, the exhaust gas treatment object can be urea.

[0034] In this embodiment, pressure data of the exhaust gas being treated by the injection system is acquired. Optionally, a liquid pressure sensor is installed on the liquid transmission pipeline to read the pressure data collected by the liquid pressure sensor.

[0035] Step S102: Based on the pressure data and the duty cycle data of the injection system, determine the pressure change state of the exhaust gas treatment object.

[0036] In the technical solution provided in step S102 of this application, the duty cycle data can be used to represent the proportion of the injection system's operating time to the injection cycle. For example, the duty cycle data can be the operating duty ratio of the injection system. The injection cycle can be used to represent a preset time interval for acquiring the pressure data. For example, the preset time interval can be 30 seconds (s). This value is only illustrative and not specifically limited.

[0037] In this embodiment, the aforementioned pressure change state can be used to represent the pressure change state during the process of the injection system injecting the exhaust gas treatment target. Optionally, the aforementioned pressure change state can be represented by the aforementioned pressure fluctuation value. For example, the aforementioned pressure fluctuation value can be the pressure difference between the first pressure and the second pressure, wherein the first pressure is greater than the second pressure.

[0038] In this embodiment, after acquiring the pressure data of the exhaust gas being treated by the injection system, the pressure change state of the exhaust gas being treated can be determined based on the pressure data and the duty cycle data of the injection system. Optionally, the first pressure and the second pressure in one injection cycle are acquired, and the difference between the first pressure and the second pressure is calculated to obtain the difference between the first pressure and the second pressure. This difference is determined as the pressure fluctuation value in that injection cycle. Simultaneously, the operating duration of the injection system in that injection cycle is recorded, and the ratio of the operating duration to the injection cycle is determined as the duty cycle data. When the duty cycle data is within a preset duty cycle interval, the pressure fluctuation value in that injection cycle is determined as the pressure change state.

[0039] Step S103: Based on the pressure change state, the injection function of the injection system is tested to obtain the function test results.

[0040] In the technical solution provided by step S103 of this application, the functional test result can be used to indicate whether the injection function is a normal injection function or an abnormal injection function. For example, the functional test result can be a diagnostic result, which can be a filter element blockage detection result.

[0041] In this embodiment, the above-mentioned injection function can be to inject the exhaust gas treatment target from the above-mentioned injection system.

[0042] In this embodiment, after determining the pressure change state of the exhaust gas treatment object, the injection function of the injection system is tested based on the pressure change state to obtain a function test result. Optionally, the pressure fluctuation value indicated by the pressure change state is compared with a preset pressure difference to obtain a first comparison result, wherein the first comparison result can be used to represent the magnitude relationship between the pressure fluctuation value and the preset pressure difference. If the first comparison result indicates that the pressure fluctuation value is greater than the preset pressure difference, filter clogging detection is performed on the injection system to obtain a function test result.

[0043] For example, if the first comparison result indicates that the pressure fluctuation value is greater than the preset pressure difference, the injection system is controlled to inject at a preset duty cycle (e.g., but not limited to 50%). Simultaneously, the pressure data of the exhaust gas being treated by the controlled injection system is recorded within multiple injection cycles, resulting in multiple controlled pressure data. The difference between the third and fourth pressures in each controlled pressure data is calculated to obtain multiple controlled pressure fluctuation values. The third pressure can be the pressure experienced by the exhaust gas being treated during its flow along the controlled flow path, and the fourth pressure can be the pressure experienced by the exhaust gas being treated during its flow along the controlled flow path, with the third pressure being greater than the fourth pressure. The average pressure fluctuation value is obtained by averaging the multiple controlled pressure fluctuation values. Finally, the average pressure fluctuation value is compared with the preset pressure difference to obtain a second comparison result, which can be used to represent the magnitude relationship between the average pressure fluctuation value and the preset pressure difference. If the second comparison result is that the average pressure fluctuation value is less than or equal to the preset pressure difference, then the function test result indicates that the injection function is a normal injection function. If the second comparison result is that the average pressure fluctuation value is greater than the preset pressure difference, then the function test result indicates that the injection function is an abnormal injection function.

[0044] Step S104: Based on the function test results, output a prompt message.

[0045] In the technical solution provided by step S104 of this application, the aforementioned prompting information can be used to indicate whether the injection system requires maintenance. Optionally, the prompting information can be provided through a human-machine interface system in the vehicle. For example, the human-machine interface system can be a human-machine interface display screen located on the vehicle's center console, which can be located in the vehicle's cockpit.

[0046] In this embodiment, after obtaining the function test results, a prompt message can be output based on the function test results. Optionally, if the function test results indicate that the spraying function is abnormal, a first prompt message can be output using the human-machine interaction system. The first prompt message can be used to indicate that the spraying system needs maintenance. If the function test results indicate that the spraying function is abnormal, a second prompt message can be output using the human-machine interaction system. The second prompt message can be used to indicate that the spraying system does not need maintenance.

[0047] For example, if the above function test results indicate that the spraying function is malfunctioning, the first prompt message can be displayed on the human-machine interface screen to indicate that the spraying system's spraying function is malfunctioning and requires maintenance. If the above function test results indicate that the spraying function is normal, the second prompt message can be displayed on the human-machine interface screen to indicate that the spraying system's spraying function is normal and does not require maintenance.

[0048] In steps S101 to S104 above, when the injection system in the vehicle is inspected, pressure data of the exhaust gas being treated by the injection system is acquired; based on the pressure data and the duty cycle data of the injection system, the pressure change state of the exhaust gas being treated is determined; based on the pressure change state, the injection function of the injection system is inspected to obtain a function inspection result; based on the function inspection result, a prompt message is output. In other words, in this embodiment, by combining the acquired pressure data and the duty cycle data of the injection system, the pressure change state of the exhaust gas being treated can be determined. By inspecting the injection function of the injection system based on the aforementioned pressure state changes, a inspection result indicating whether the injection function is normal or abnormal can be obtained. Finally, based on the inspection result, a prompt message can be output, thereby achieving the goal of avoiding untimely or excessive maintenance of the injection system, solving the technical problem of poor real-time performance in the maintenance and inspection of the injection system in the vehicle, and realizing the technical effect of improving the real-time performance of the maintenance and inspection of the injection system in the vehicle.

[0049] The detection method of the injection system in the vehicle in the embodiments of this application will be further described below.

[0050] As an optional embodiment, the pressure data includes: multiple first pressure data and multiple second pressure data. The first pressure data represents the first pressure experienced by the exhaust gas treatment object during flow along the flow path at the injection shutdown time. The second pressure data represents the second pressure experienced by the exhaust gas treatment object during flow along the flow path at the injection activation time. The injection shutdown time is later than the injection activation time, the injection cycle includes the injection shutdown time and the injection activation time, and the first pressure is greater than the second pressure. In step S102, determining the pressure change state of the exhaust gas treatment object based on the pressure data and the duty cycle data of the injection system includes: determining the pressure difference between the first pressure represented by the multiple first pressure data and the second pressure represented by the multiple second pressure data to obtain multiple pressure differences; and determining the pressure change state based on the multiple pressure differences and the duty cycle data.

[0051] In this embodiment, the aforementioned first pressure data can be used to represent the first pressure experienced by the exhaust gas treatment object during its flow along the flow path at the moment of injection shutdown. Optionally, the aforementioned first pressure (Pmax) can be the pressure value of urea in the transmission path of the liquid transmission pipeline when the injection system is in the closed state.

[0052] In this embodiment, the second pressure data can be used to represent the second pressure experienced by the exhaust gas treatment object during its flow along the flow path at the moment the injection is activated. Optionally, the second pressure (Pmin) can be the pressure value of urea in the transmission path of the liquid transmission pipeline when the injection system is activated. The first pressure is greater than the second pressure.

[0053] In this embodiment, the injection cycle may include the injection shutdown time and the injection activation time. Specifically, within the same injection cycle, the injection shutdown time is later than the injection activation time.

[0054] In this embodiment, after obtaining the pressure data of the exhaust gas treatment target injected by the injection system, the pressure difference between the first pressure represented by various first pressure data and the second pressure represented by various second pressure data is determined, thus obtaining multiple pressure differences. Optionally, after obtaining the pressure data, the first pressure data of the injection system in the closed state and the second pressure data of the injection system in the open state are obtained in multiple injection cycles, thus obtaining multiple first pressure data and multiple second pressure data. The pressure difference between the first pressure represented by the first pressure data and the second pressure represented by the second pressure data in each injection cycle is calculated, thus obtaining multiple pressure differences.

[0055] In this embodiment, after obtaining multiple pressure differences, the pressure change state can be determined based on the multiple pressure differences and the duty cycle data. Optionally, after obtaining multiple pressure differences, the duty cycle data of the injection system in the injection cycle corresponding to each pressure difference can be obtained to obtain multiple duty cycle data. The pressure difference corresponding to the duty cycle data within a preset duty cycle among the multiple duty cycle data is determined as the pressure state change.

[0056] In this embodiment, the pressure difference between the first pressure and the second pressure in each injection cycle is determined, resulting in multiple pressure differences. The pressure differences whose corresponding duty cycle data falls within a preset duty cycle are identified as pressure state changes, thereby achieving the goal of determining the pressure change state.

[0057] As an optional embodiment, determining the pressure change state based on multiple pressure differences and duty cycle data includes: determining multiple target pressure differences from the multiple pressure differences, wherein the time corresponding to the multiple target pressure differences is later than the time corresponding to the remaining pressure differences other than the multiple target pressure differences; determining the average pressure difference among the multiple target pressure differences; and determining the pressure change state based on the average pressure difference and the preset pressure difference in response to the duty cycle data being within a preset duty cycle interval.

[0058] In this embodiment, the time corresponding to the plurality of target pressure differences is later than the time corresponding to the remaining pressure differences other than the target pressure differences. Optionally, the start time of the plurality of injection cycles corresponding to the plurality of target pressure differences is later than the start time of the plurality of injection cycles corresponding to the remaining pressure differences other than the target pressure differences.

[0059] In this embodiment, after obtaining multiple pressure differences, multiple target pressure differences can be determined from these multiple pressure differences. Optionally, the pressure differences corresponding to a preset number of injection cycles among the multiple injection cycles corresponding to the multiple pressure differences are determined as the multiple target pressure differences.

[0060] For example, suppose the aforementioned pressure differences are 30 pressure differences obtained from 30 injection cycles. By sorting the start times of each of the 30 injection cycles in ascending order, a time series of the 30 injection cycles can be obtained. The 10 pressure differences corresponding to the last 10 injection cycles in this time series are then identified as the aforementioned target pressure differences.

[0061] In this embodiment, after determining multiple target pressure differences, the average pressure difference among the multiple target pressure differences can be determined. Optionally, the average pressure difference among the multiple target pressure differences can be obtained by averaging the multiple target pressure differences.

[0062] In this embodiment, the aforementioned preset duty cycle can be used to represent a pre-set duty cycle range, for example, the preset duty cycle can be 25% to 75%. The aforementioned preset pressure difference can be used to represent a pre-set pressure difference value, for example, the preset pressure difference can be 30 kPa. The values ​​here are for illustrative purposes only and are not intended to be specific.

[0063] In this embodiment, after determining the average pressure difference, in response to the duty cycle data being within a preset duty cycle interval, the pressure change state can be determined based on the average pressure difference and the preset pressure difference. Optionally, when multiple duty cycle data corresponding to multiple target pressure differences are all within the preset duty cycle interval, the magnitude relationship between the average pressure difference and the preset pressure difference can be obtained by comparing the average pressure difference and the preset pressure difference, and the pressure change state can be determined based on this magnitude relationship.

[0064] In this embodiment, by determining the average pressure difference among the multiple target pressure differences with the latest time corresponding to the pressure difference, and when the duty data corresponding to the multiple target pressure differences are all within a preset duty interval, the pressure change state can be determined based on the relationship between the average pressure difference and the preset pressure difference, thereby achieving the purpose of determining the pressure change state.

[0065] As an optional embodiment, in response to the duty cycle data being within a preset duty cycle interval, a pressure change state is determined based on the average pressure difference and a preset pressure difference, including: in response to the duty cycle data being within the preset duty cycle interval and the average pressure difference being greater than the preset pressure difference, determining the pressure change state as an abnormal pressure change state, wherein the abnormal pressure change state is used to represent an abnormal pressure change state during the process of the injection system injecting exhaust gas to treat the object; and in response to the duty cycle data being within the preset duty cycle interval and the average pressure difference being less than or equal to the preset pressure difference, determining the pressure change state as a normal pressure change state, wherein the normal pressure change state is used to represent a normal pressure change state during the process of the injection system injecting exhaust gas to treat the object.

[0066] In this embodiment, the aforementioned abnormal pressure change state can be used to indicate the abnormal pressure change state during the process of the injection system injecting the exhaust gas treatment object. For example, the aforementioned abnormal pressure change state can be used to indicate that the pressure fluctuation value of the exhaust gas treatment object is greater than the aforementioned preset pressure difference. The aforementioned normal pressure change state can be used to indicate the normal pressure change state during the process of the injection system injecting the exhaust gas treatment object. For example, the aforementioned normal pressure change state can be used to indicate that the pressure fluctuation value of the exhaust gas treatment object is greater than or equal to the aforementioned preset pressure difference.

[0067] In this embodiment, after determining the average pressure difference, in response to the duty cycle data being within the preset duty cycle interval and the average pressure difference being greater than the preset pressure difference, the pressure change state can be determined to be an abnormal pressure change state. Optionally, when multiple duty cycle data corresponding to multiple target pressure differences are all within the preset duty cycle interval, comparing the average pressure difference with the preset pressure difference can yield the magnitude relationship between the average pressure difference and the preset pressure difference. When the average pressure difference is greater than the preset pressure difference, the pressure change state can be determined to be an abnormal pressure change state.

[0068] In this embodiment, after determining the average pressure difference, in response to the duty cycle data being within the preset duty cycle interval and the average pressure difference being less than or equal to the preset pressure difference, the pressure change state can be determined to be a normal pressure change state. Optionally, when multiple duty cycle data corresponding to multiple target pressure differences are all within the preset duty cycle interval, comparing the average pressure difference with the preset pressure difference can yield the magnitude relationship between the average pressure difference and the preset pressure difference. When the average pressure difference is less than or equal to the preset pressure difference, the pressure change state can be determined to be a normal pressure change state.

[0069] In this embodiment, when the multiple duty-free data corresponding to the multiple target pressure differences are within the preset duty-free interval, the pressure change state can be determined as a normal change state or an abnormal change state by the relationship between the average pressure difference and the preset pressure difference, thereby achieving the purpose of determining the pressure change state.

[0070] As an optional embodiment, step S103 involves detecting the injection function of the injection system based on the pressure change state to obtain a function detection result. This includes: responding to an abnormal pressure change state by performing a function detection on the injection function to obtain a first function detection result, wherein the abnormal pressure change state indicates an abnormal pressure change during the injection of exhaust gas by the injection system, and the first function detection result indicates an abnormal injection function; and responding to a normal pressure change state by performing a function detection on the injection function to obtain a second function detection result, wherein the normal pressure change state indicates a normal pressure change during the injection of exhaust gas by the injection system, and the second function detection result indicates a normal injection function.

[0071] In this embodiment, if the average pressure fluctuation value is greater than the preset pressure difference, the first function detection result can be used to indicate that the injection function is an abnormal injection function.

[0072] In this embodiment, if the average pressure fluctuation value is less than or equal to the preset pressure difference, the second function detection result can be used to indicate that the injection function is a normal injection function.

[0073] In this embodiment, after determining the aforementioned pressure change state, in response to the pressure change state being an abnormal pressure change state, a functional test is performed on the injection function, and the functional test result can be obtained as the first functional test result. Optionally, when the aforementioned pressure change state is an abnormal pressure change state, the aforementioned filter element blockage test is performed on the aforementioned injection system. When the filter element blockage test result is that the average pressure fluctuation value is greater than the preset pressure difference, the aforementioned injection function can be determined as the aforementioned abnormal injection function, and this diagnostic result is determined as the first test result.

[0074] In this embodiment, after determining the aforementioned pressure change state, in response to the pressure change state being a normal pressure change state, a functional test is performed on the injection function, and the functional test result can be obtained as a second functional test result. Optionally, when the aforementioned pressure change state is a normal pressure change state, the aforementioned filter element blockage test is performed on the aforementioned injection system. When the filter element blockage test result is that the average pressure fluctuation value is less than or equal to a preset pressure difference, the aforementioned injection function can be determined as the aforementioned normal injection function, and this diagnostic result is determined as the second test result.

[0075] In this embodiment, when the pressure change is abnormal, the above-mentioned injection function is tested to determine that the injection function is an abnormal injection function, and when the pressure change is normal, the above-mentioned injection function is tested to determine that the injection function is a normal injection function. Thus, the purpose of determining whether the injection function is a normal injection function or an abnormal injection function is achieved.

[0076] As an optional embodiment, step S104, based on the function detection result, outputs a prompt message, including: in response to the function detection result being a first function detection result, outputting a first prompt message, wherein the first function detection result indicates that the injection function is an abnormal injection function, and the first prompt message indicates that the injection system needs maintenance; in response to the function detection result being a second function detection result, outputting a second prompt message, and obtaining the next pressure data of the pressure data, using the next pressure data as the pressure data, and returning to execute the following steps: based on the pressure data, determining the pressure change state of the exhaust gas treatment object, wherein the second function detection result indicates that the injection function is a normal injection function, and the second prompt message indicates that the injection system does not need maintenance.

[0077] In this embodiment, the first prompt information can be used to remind the injection system that maintenance is required. Optionally, the first prompt information can be provided using the human-machine interface system.

[0078] In this embodiment, the second prompt message can be used to indicate that the injection system does not require maintenance. Optionally, the second prompt message can be provided using the human-machine interface system.

[0079] In this embodiment, the maintenance operation described above can be an operation to repair and maintain the injection system. For example, the maintenance operation may include replacing the urea filter element.

[0080] In this embodiment, after obtaining the function test result, in response to the function test result being a first function test result, the above-mentioned prompt information can be output as a first prompt information. Optionally, when the function test result indicates that the spraying function is an abnormal spraying function, the human-machine interface display screen can be used to prompt that the spraying function of the spraying system is an abnormal spraying function and requires maintenance operations.

[0081] In this embodiment, after obtaining the function test result, in response to the function test result being a second function test result, the above-mentioned prompt information can be output as a second prompt information, and the next pressure data of the above-mentioned pressure data can be obtained. The next pressure data is used as the pressure data, and the following steps are performed: based on the pressure data, the pressure change state of the exhaust gas treatment object is determined. Optionally, when the function test result indicates that the injection function is a normal injection function, the human-machine interface display screen can be used to prompt that the injection function of the injection system is a normal injection function, and no maintenance operation is required. At the same time, the pressure data of the exhaust gas treatment object in subsequent injection cycles is obtained, and the pressure change state is further determined based on the pressure data in subsequent injection cycles.

[0082] In this embodiment, different prompts can be output based on different functional test results, thereby achieving the purpose of prompting whether the injection system needs maintenance operations, thus realizing the technical effect of improving the real-time performance of maintenance and testing of the injection system in the vehicle.

[0083] As an optional embodiment, the method further includes: responding to the completion of maintenance operations on the injection system, detecting the injection function of the injection system after maintenance to obtain a maintenance function detection result, wherein the maintenance function detection result is used to indicate whether the injection function of the injection system after maintenance is a normal injection function or an abnormal injection function; responding to the maintenance function detection result being a first maintenance function detection result, ending the maintenance process, wherein the first maintenance function detection result is used to indicate that the injection function of the injection system after maintenance is a normal injection function; responding to the maintenance function detection result being a second maintenance function detection result, outputting a third prompt message, wherein the second maintenance function detection result is used to indicate that the injection function of the injection system after maintenance is an abnormal injection function, and the third prompt message is used to indicate that a maintenance abnormality event has occurred in the injection system after maintenance.

[0084] In this embodiment, the third prompt information can be used to indicate a maintenance anomaly event in the injection system after maintenance. Optionally, the maintenance anomaly event can be used to indicate a spare part malfunction. For example, the spare part malfunction may include: incorrect installation of the spare part, or the replacement spare part being inconsistent with the original model.

[0085] In this embodiment, in response to the completion of maintenance operations on the injection system, the injection function of the injection system after maintenance is tested, and maintenance function test results can be obtained. Optionally, the pressure data of the exhaust gas treated by the injection system after maintenance can be obtained, and post-maintenance pressure data can be obtained. By calculating the difference between the pressure change state corresponding to the post-maintenance pressure data and the aforementioned average pressure difference, the maintenance function test results can be obtained.

[0086] For example, after performing maintenance on the injection system, the pressure difference over five injection cycles is obtained, resulting in five post-maintenance pressure differences. Averaging these five post-maintenance pressure differences yields the average post-maintenance pressure difference. The maintenance difference between the average post-maintenance pressure difference and the aforementioned average pressure difference is calculated, and compared with a preset maintenance difference value, to obtain the maintenance function test result. When the maintenance difference value is less than or equal to the preset maintenance difference value, the injection function of the injection system after maintenance is determined to be normal, and this maintenance function test result is identified as the first maintenance test result. When the maintenance difference value is greater than the preset maintenance difference value, the injection function of the injection system after maintenance is determined to be abnormal, and this maintenance function test result is identified as the second maintenance test result.

[0087] In this embodiment, after obtaining the maintenance function test result, the maintenance process can be terminated if the maintenance function test result is the first maintenance function test result. Optionally, when the maintenance function test result is the first maintenance test result, it can be determined that the spraying function of the above-mentioned spraying system after maintenance is the normal spraying function. At this time, the maintenance process can be terminated.

[0088] In this embodiment, after obtaining the maintenance function test result, in response to the maintenance function test result being a second maintenance function test result, a third prompt message can be output. Optionally, when the maintenance function test result is the second maintenance test result, it can be determined that the spraying function of the above-mentioned spraying system after maintenance is the abnormal spraying function. At this time, the human-machine interface display screen can be used to prompt that a maintenance abnormality event has occurred in the spraying system after maintenance, and the above-mentioned spare parts need to be checked.

[0089] In this embodiment, by detecting the injection function of the injection system after maintenance, the maintenance process can be terminated when the maintenance function detection result indicates that the injection function of the injection system after maintenance is normal; when the maintenance function detection result indicates that the injection function of the injection system after maintenance is abnormal, an abnormal maintenance event can be detected in the injection system after maintenance. This achieves the purpose of indicating whether the injection system is properly maintained, thereby realizing the technical effect of improving the real-time performance of maintenance detection of the injection system in the vehicle.

[0090] In this embodiment, when inspecting the injection system in a vehicle, pressure data of the exhaust gas being treated by the injection system is acquired; based on the pressure data and the duty cycle data of the injection system, the pressure change state of the exhaust gas being treated is determined; based on the pressure change state, the injection function of the injection system is detected to obtain a function detection result; based on the function detection result, a prompt message is output. In other words, in this embodiment, by combining the acquired pressure data and the duty cycle data of the injection system, the pressure change state of the exhaust gas being treated can be determined. By detecting the injection function of the injection system based on the aforementioned pressure state changes, a detection result indicating whether the injection function is normal or abnormal can be obtained. Finally, based on the above detection result, a prompt message can be output, thereby achieving the goal of avoiding untimely or excessive maintenance of the injection system, solving the technical problem of poor real-time performance in the maintenance and inspection of the injection system in vehicles, and realizing the technical effect of improving the real-time performance of the maintenance and inspection of the injection system in vehicles.

[0091] The technical solutions of the embodiments of this application will be illustrated below with reference to preferred embodiments.

[0092] In related technologies, maintenance reminders for the injection system in a urea system often rely on fixed time intervals or mileage, or require manual inspection by the user. These traditional methods suffer from the drawbacks of untimely or excessive filter maintenance, resulting in poor real-time performance of maintenance checks on the vehicle's injection system.

[0093] To address the aforementioned technical problems, this application proposes a method for detecting a vehicle injection system. When detecting the vehicle injection system, the method involves acquiring pressure data of the exhaust gas being treated; determining the pressure change state of the exhaust gas being treated based on the pressure data and the duty cycle data of the injection system; detecting the injection function of the injection system based on the pressure change state to obtain a function detection result; and outputting a prompt message based on the function detection result. In other words, in this application embodiment, by combining the acquired pressure data and the duty cycle data of the injection system, the pressure change state of the exhaust gas being treated can be determined. Detecting the injection function of the injection system based on the aforementioned pressure state changes yields a detection result indicating whether the injection function is normal or abnormal. Finally, based on the detection result, a prompt message can be output, thereby achieving the goal of preventing untimely or excessive maintenance of the injection system, solving the technical problem of poor real-time performance in the maintenance and detection of vehicle injection systems, and achieving the technical effect of improving the real-time performance of maintenance and detection of vehicle injection systems.

[0094] Figure 2 This is a flowchart of an intelligent maintenance reminder method for a gas-driven urea system according to an embodiment of this application. Figure 2 As shown, the method may include the following steps.

[0095] Step S201: Power on the vehicle.

[0096] In this embodiment, the vehicle is powered on and starts. At this time, step S202 can be executed.

[0097] Step S202: The urea system is pressure-built and started.

[0098] In this embodiment, after the vehicle is powered on and started, the urea system begins pressure build-up. First, the urea tank's intake valve is opened and the urea tank's exhaust valve is closed to inflate the urea tank to the target pressure. Simultaneously, the urea tank pressure sensor collects the pressure value of the urea tank to determine whether the urea tank pressure has reached the target pressure. At this point, step S203 can be executed.

[0099] Step S203: Pressure build-up successful, injection ready.

[0100] In this embodiment, when the pressure value of the urea tank reaches the target pressure value, it indicates that the pressure build-up is successful, the injection is ready, and urea injection can be performed. At this time, step S204 can be executed.

[0101] Step S204, urea injection / pressure replenishment.

[0102] In this embodiment, after the urea tank is successfully pressurized, urea injection can be performed. Simultaneously, the urea tank can be pressurized again via the air intake valve to maintain the urea tank pressure at the target pressure. At this point, step S205 or step S210 can be executed. Additionally, after maintaining the urea filter element, step S230 can be executed.

[0103] Step S205: Determine if the vehicle is powered off.

[0104] In this embodiment, it is determined whether the vehicle is powered off. If the vehicle is not powered off, the process can return to step S204. If the vehicle is powered off, the intake valve of the urea tank is closed and the exhaust valve of the urea tank is opened to release the pressure in the urea tank. At this time, step S206 can be executed.

[0105] Step S206, stop.

[0106] In this embodiment, the intelligent maintenance reminder method for the gas-driven urea system also stops after the vehicle is powered off.

[0107] Step S210: Passive monitoring of the urea system.

[0108] In this embodiment, during urea injection, the passive monitoring function of the urea system can be activated to monitor whether the urea system requires maintenance. At this time, step S211 can be executed.

[0109] Step S211: Dynamically record the maximum value Pmax and minimum value Pmin of the liquid circuit pressure in each of the 30 injection cycles.

[0110] In this embodiment, a first data storage device can be set up in the data storage area to dynamically record the maximum value Pmax and minimum value Pmin of the liquid path pressure over 30 injection cycles using a moving average algorithm. The liquid path can be the aforementioned flow path. At this point, step S212 can be executed.

[0111] Step S212: Determine whether the duty cycle of the urea nozzle control is within the preset range.

[0112] In this embodiment, the nozzle control duty cycle is obtained for each injection cycle, and it is determined whether the urea nozzle control duty cycle for each injection cycle is within a preset range. If the urea nozzle control duty cycle for each injection cycle is not within the preset range, it indicates that the currently recorded data contains invalid data, and the process returns to step S211; if the urea nozzle control duty cycle for each injection cycle is within the preset range, it indicates that the currently recorded data is valid, and step S213 can be executed. The preset range can be 25% to 75%.

[0113] Step S213: Calculate the difference between Pmax and Pmin in each injection cycle, and take the average of the differences over the last 10 cycles as Paver.

[0114] In this embodiment, the difference between Pmax and Pmin in each injection cycle is calculated to obtain the difference over 30 injection cycles. The difference over the last 10 injection cycles is then averaged to obtain the average difference over the last 10 injection cycles, which is denoted as Paver. At this point, step S214 can be executed.

[0115] Optionally, a second data storage device can be set in the data storage area. The second data storage device can record 10 Pavers and 10 Pavers that are dynamically updated over time.

[0116] Step S214: Determine whether Paver is greater than the average threshold.

[0117] In this embodiment, after obtaining Paver, it is compared with the average threshold to determine whether Paver is greater than the average threshold. When Paver is not greater than the average threshold, it indicates that the urea system is in normal working condition, and the process returns to step S213; when Paver is greater than the average threshold, it indicates that the urea system may be in abnormal working condition, and step S220 can be executed.

[0118] Optionally, the above average threshold can be the theoretical urea pressure fluctuation value (EURP_CHECK). For example, the theoretical urea pressure fluctuation value can be 30 kPa.

[0119] Step S220, urea filter blockage diagnosis.

[0120] In this embodiment, when the urea system may be in an abnormal operating state, it is necessary to perform a blockage diagnosis on the urea filter element to confirm whether the urea filter element needs maintenance. At this time, step S221 can be executed.

[0121] Step S221: Control the nozzle to spray at a 50% duty cycle.

[0122] In this embodiment, after activating the urea filter clogging diagnosis, the nozzle is controlled to spray at a 50% duty cycle. Optionally, in each spray cycle, the urea nozzle is controlled to be open for half a spray cycle and closed for the other half spray cycle. At this time, step S222 can be executed.

[0123] Step S222: Dynamically record the maximum value Pmax and minimum value Pmin of the liquid circuit pressure in each of the 30 injection cycles.

[0124] In this embodiment, a moving average algorithm is used to dynamically record the maximum value Pmax and minimum value Pmin of the hydraulic pressure over 30 injection cycles. At this point, step S223 can be executed.

[0125] Step S223: Subtract Pmax and Pmin in each injection cycle, take the average difference of the last 10 cycles as the urea pressure fluctuation value, and subtract it from the theoretical urea pressure fluctuation value to obtain the fluctuation difference value.

[0126] In this embodiment, the difference between Pmax and Pmin in each injection cycle is calculated to obtain the difference over 30 cycles. The difference over the last 10 cycles is averaged to obtain the average difference over the last 10 cycles, which is then used as the urea pressure fluctuation value. The difference between this urea pressure fluctuation value and the theoretical urea pressure fluctuation value is then calculated to obtain the fluctuation difference. At this point, step S224 can be executed.

[0127] Step S224: Determine whether the fluctuation difference is greater than the fluctuation threshold.

[0128] In this embodiment, after obtaining the fluctuation difference value, it can be determined whether the fluctuation difference value is greater than the fluctuation threshold. When the fluctuation difference value is not greater than the fluctuation threshold, it indicates that the urea filter element is not blocked, and the process returns to step S210; when the fluctuation difference value is greater than the fluctuation threshold, it indicates that the urea filter element is blocked, and step S225 is executed.

[0129] Step S225 triggers the urea filter maintenance reminder function.

[0130] In this embodiment, after confirming that the urea filter is clogged, the urea filter maintenance reminder function can be triggered. Optionally, the urea filter may require maintenance via the vehicle's human-machine interface system. At this time, step S205 can be executed.

[0131] Step S230: Urea system spare parts abnormality alert.

[0132] In this embodiment, after the urea filter element is maintained, the urea system spare parts abnormality reminder process can be initiated to confirm whether any abnormalities have occurred in the urea system spare parts after maintenance. At this time, step S231 can be executed.

[0133] Step S231: Record 5 Paver values ​​consecutively, calculate the difference between the average of the 5 newly recorded Paver values ​​and the average of the 10 historical Paver values, and obtain the alert difference.

[0134] In this embodiment, after maintaining the urea filter element, five Paver values ​​are continuously recorded, and the average of these five Paver values ​​is calculated to obtain the first reminder average value. Simultaneously, ten Paver values ​​are read from the second data storage device, and the average of these ten Paver values ​​is calculated to obtain the second reminder average value. The reminder difference value is obtained by calculating the difference between the first reminder average value and the second reminder average value. At this point, step S232 can be executed.

[0135] Step S232: Determine whether the reminder difference is greater than the spare parts reminder threshold.

[0136] In this embodiment, after obtaining the reminder difference, it can be determined whether the reminder difference is greater than the spare parts reminder threshold. When the reminder difference is not greater than the spare parts reminder threshold, it indicates that the urea system spare parts after maintenance are not abnormal, and the process returns to step S210, updating the Paver data in the second data storage. When the reminder difference is greater than the spare parts reminder threshold, it indicates that the urea system spare parts after maintenance are abnormal, and step S233 can be executed. The spare parts reminder threshold can be 4 kPa.

[0137] Step S233: Trigger the urea system spare parts reminder function.

[0138] In this embodiment, after confirming an abnormality in the urea system spare parts after maintenance, the urea system spare parts reminder function can be triggered. Optionally, the abnormality in the urea system spare parts can be indicated through the vehicle's human-machine interaction system. At this time, step S205 can be executed.

[0139] In steps S201 to S233 above, when providing intelligent maintenance reminders for the air-driven urea system, the maximum and minimum values ​​of the hydraulic pressure in multiple injection cycles are obtained. The difference between the maximum and minimum hydraulic pressure in each injection cycle is calculated, resulting in multiple differences. Following a chronological order, multiple target differences can be identified. The average difference is obtained by calculating the average of these target differences. By comparing the average difference with an average threshold, when the average difference exceeds the threshold, the urea filter blockage diagnosis function is triggered to confirm whether the urea filter requires maintenance. This achieves the goal of preventing untimely or excessive maintenance of the injection system, solving the technical problem of poor real-time performance in vehicle injection system maintenance detection, and improving the real-time performance of vehicle injection system maintenance detection.

[0140] According to an embodiment of this application, a detection device for a vehicle injection system is also provided. It should be noted that the vehicle injection system detection device of this embodiment can be used to execute a vehicle injection system detection method according to an embodiment of this application. Figure 3 This is a schematic diagram of a detection device for an injection system in a vehicle according to an embodiment of this application. Figure 3 As shown, the detection device 300 for the injection system in the vehicle includes: an acquisition unit 301, a determination unit 302, a detection unit 303, and an output unit 304.

[0141] The acquisition unit 301 is used to acquire pressure data of the exhaust gas treatment object injected by the injection system. The pressure data is used to represent the pressure experienced by the exhaust gas treatment object during the flow path, which is located between the injection system and the vehicle's exhaust gas discharge system.

[0142] The determining unit 302 is used to determine the pressure change state of the exhaust gas treatment object based on pressure data and duty cycle data of the injection system. The duty cycle data is used to represent the ratio between the number of times the injection system is opened and closed during the injection cycle, and the pressure change state is used to represent the pressure change state during the process of the injection system injecting the exhaust gas treatment object.

[0143] The detection unit 303 is used to detect the injection function of the injection system based on the pressure change state and obtain the function detection result, wherein the function detection result is used to indicate whether the injection function is a normal injection function or an abnormal injection function.

[0144] The output unit 304 is used to output prompt information based on the function test results, wherein the prompt information is used to indicate whether the injection system needs maintenance operations.

[0145] Optionally, the determining unit 302 includes: a first determining module, used to determine the pressure difference between the first pressure represented by multiple first pressure data and the second pressure represented by multiple second pressure data, to obtain multiple pressure differences; and a second determining module, used to determine the pressure change state based on the multiple pressure differences and duty cycle data.

[0146] Optionally, the second determining module includes: a first determining submodule, used to determine multiple target pressure differences from multiple pressure differences, wherein the time corresponding to the multiple target pressure differences is later than the time corresponding to the remaining pressure differences other than the multiple target pressure differences; a second determining submodule, used to determine the average pressure difference among the multiple target pressure differences; and a third determining submodule, used to determine the pressure change state based on the average pressure difference and the preset pressure difference in response to the duty cycle data being within a preset duty cycle interval.

[0147] Optionally, the third determining submodule includes: a first determining component, used to determine the pressure change state as an abnormal pressure change state in response to the duty cycle data being within a preset duty cycle interval and the average pressure difference being greater than a preset pressure difference, wherein the abnormal pressure change state is used to represent the abnormal pressure change state during the process of the injection system injecting exhaust gas to treat the object; and a second determining component, used to determine the pressure change state as a normal pressure change state in response to the duty cycle data being within a preset duty cycle interval and the average pressure difference being less than or equal to a preset pressure difference, wherein the normal pressure change state is used to represent the normal pressure change state during the process of the injection system injecting exhaust gas to treat the object.

[0148] Optionally, the detection unit 303 includes: a first detection module, used to perform functional detection on the injection function in response to an abnormal pressure change state, and obtain a first functional detection result, wherein the abnormal pressure change state is used to indicate an abnormal pressure change state during the process of the injection system injecting exhaust gas to be treated, and the first functional detection result is used to indicate that the injection function is an abnormal injection function; and a second detection module, used to perform functional detection on the injection function in response to a normal pressure change state, and obtain a second functional detection result, wherein the normal pressure change state is used to indicate a normal pressure change state during the process of the injection system injecting exhaust gas to be treated, and the second functional detection result is used to indicate that the injection function is a normal injection function.

[0149] Optionally, the output unit 304 includes: a first output module, configured to output a first prompt message in response to a first function detection result, wherein the first function detection result indicates that the injection function is an abnormal injection function, and the first prompt message indicates that the injection system needs maintenance; and a second output module, configured to output a second prompt message in response to a second function detection result, and to acquire the next pressure data, use the next pressure data as the pressure data, and return to perform the following steps: based on the pressure data, determine the pressure change state of the exhaust gas treatment object, wherein the second function detection result indicates that the injection function is a normal injection function, and the second prompt message indicates that the injection system does not need maintenance.

[0150] Optionally, the device can also be used to perform the following methods: in response to the completion of maintenance operations on the injection system, the injection function of the injection system after maintenance is detected to obtain a maintenance function detection result, wherein the maintenance function detection result is used to indicate whether the injection function of the injection system after maintenance is a normal injection function or an abnormal injection function; in response to the maintenance function detection result being a first maintenance function detection result, the maintenance process is terminated, wherein the first maintenance function detection result is used to indicate that the injection function of the injection system after maintenance is a normal injection function; in response to the maintenance function detection result being a second maintenance function detection result, a third prompt message is output, wherein the second maintenance function detection result is used to indicate that the injection function of the injection system after maintenance is an abnormal injection function, and the third prompt message is used to indicate that a maintenance abnormality event has occurred in the injection system after maintenance.

[0151] In this embodiment, a detection device for a vehicle injection system is provided. The device may include: an acquisition unit for acquiring pressure data of the exhaust gas being treated by the injection system; a determination unit for determining the pressure change state of the exhaust gas being treated based on the pressure data and the duty cycle data of the injection system; a detection unit for detecting the injection function of the injection system based on the pressure change state to obtain a function detection result; and an output unit for outputting a prompt message based on the function detection result. In other words, in this embodiment, by combining the acquired pressure data and the duty cycle data of the injection system, the pressure change state of the exhaust gas being treated can be determined. By detecting the injection function of the injection system based on the aforementioned pressure state changes, a detection result indicating whether the injection function is normal or abnormal can be obtained. Finally, based on the detection result, a prompt message can be output, thereby achieving the goal of avoiding untimely or excessive maintenance of the injection system, solving the technical problem of poor real-time performance in the maintenance and detection of vehicle injection systems, and achieving the technical effect of improving the real-time performance of maintenance and detection of vehicle injection systems.

[0152] According to an embodiment of this application, a processor is also provided for running a program, wherein the program is executed by the processor to perform the detection method of the injection system in the vehicle in the embodiment.

[0153] According to an embodiment of this application, an electronic device is also provided. Figure 4 This is a schematic diagram of an electronic device according to an embodiment of this application, such as... Figure 4 As shown, the electronic device 400 may include a memory 410 and a processor 420, wherein the memory 410 is used to store computer programs; and the processor 420 is used to run the programs stored in the memory 410 to implement the vehicle injection system detection method of this application.

[0154] In this application, "multiple" refers to two or more.

[0155] In this application, unless otherwise expressly defined, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0156] The terms “first,” “second,” “third,” “fourth,” etc., in this application (if present) are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0157] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0158] According to another aspect of the embodiments of this application, a computer-readable storage medium is also provided. The computer-readable storage medium includes a stored program, wherein, when the program is executed, it controls the device where the computer-readable storage medium is located to perform the detection method of the injection system in the vehicle described in the embodiment.

[0159] Computer-readable storage media, also known as computer storage media, may include data signals propagated in baseband or as part of a carrier wave, carrying readable program code. These propagated data signals may take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. Computer-readable storage media can transmit, propagate, or transfer programs for use by or in conjunction with an instruction execution system, apparatus, or device.

[0160] The program code contained in a computer-readable storage medium may be transmitted using any suitable medium, including but not limited to wireless, wired, optical fiber, radio frequency, or any suitable combination thereof.

[0161] According to an embodiment of this application, a computer program product is also provided, which includes a computer program, wherein when the computer program is executed by a processor, it implements the detection method of the injection system in the vehicle in the embodiment.

[0162] According to an embodiment of this application, a computer program product is also provided, including a non-volatile computer-readable storage medium for storing a computer program. When the computer program is executed by a processor, it implements the detection method of the injection system in the vehicle in the embodiment.

[0163] According to an embodiment of this application, a computer program is also provided, which, when executed by a processor, implements the detection method of the injection system in the vehicle described in the embodiment.

[0164] Optionally, when the above computer program is executed by the processor, the program code implements the following steps: acquiring pressure data of the exhaust gas treatment object injected by the injection system, wherein the pressure data represents the pressure experienced by the exhaust gas treatment object during the flow path, and the flow path is located between the injection system and the vehicle's exhaust gas discharge system; determining the pressure change state of the exhaust gas treatment object based on the pressure data and the duty cycle data of the injection system, wherein the duty cycle data represents the proportion of the injection system's operating time to the injection cycle, and the pressure change state represents the pressure change state during the injection of the exhaust gas treatment object by the injection system; detecting the injection function of the injection system based on the pressure change state, and obtaining a function detection result, wherein the function detection result represents whether the injection function is a normal injection function or an abnormal injection function; and outputting a prompt message based on the function detection result, wherein the prompt message indicates whether the injection system needs maintenance.

[0165] In the above embodiments of this application, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0166] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. The device embodiments described above are merely illustrative; for example, the division of units can be a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the displayed or discussed mutual couplings, direct couplings, or communication connections may be through some interfaces; indirect couplings or communication connections between units or modules may be electrical or other forms.

[0167] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0168] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0169] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to related technologies, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as a USB flash drive, read-only memory (ROM), random access memory (RAM), portable hard drive, magnetic disk, or optical disk.

[0170] The above are merely preferred embodiments of this application. It should be noted that those skilled in the art can make several improvements and modifications without departing from the principles of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A method for detecting an injection system in a vehicle, characterized in that, include: The pressure data of the exhaust gas treatment object injected by the injection system is obtained, wherein the pressure data is used to represent the pressure experienced by the exhaust gas treatment object during the flow path, and the flow path is located between the injection system and the vehicle's exhaust gas discharge system. Based on the pressure data and the duty cycle data of the injection system, the pressure change state of the exhaust gas treatment object is determined, wherein the duty cycle data is used to represent the proportion of the injection system's operating time to the injection cycle, and the pressure change state is used to represent the pressure change state during the process of the injection system injecting the exhaust gas treatment object. Based on the pressure change state, the injection function of the injection system is detected to obtain a function detection result, wherein the function detection result is used to indicate whether the injection function is a normal injection function or an abnormal injection function. Based on the functional test results, a prompt message is output, which is used to indicate whether the injection system needs maintenance.

2. The method according to claim 1, characterized in that, The pressure data includes multiple first pressure data and multiple second pressure data. The first pressure data represents the first pressure experienced by the exhaust gas treatment object during its flow along the flow path at the injection shutdown time. The second pressure data represents the second pressure experienced by the exhaust gas treatment object during its flow along the flow path at the injection activation time. The injection shutdown time is later than the injection activation time. The injection cycle includes the injection shutdown time and the injection activation time. The first pressure is greater than the second pressure. Determining the pressure change state of the exhaust gas treatment object based on the pressure data and the duty cycle data of the injection system includes: The pressure difference between the first pressure represented by various first pressure data and the second pressure represented by various second pressure data is determined to obtain multiple pressure differences; The pressure change state is determined based on multiple pressure differences and the duty cycle data.

3. The method according to claim 2, characterized in that, Based on multiple pressure differences and the duty cycle data, the pressure change state is determined, including: From the plurality of pressure differences, a plurality of target pressure differences are determined, wherein the time corresponding to the plurality of target pressure differences is later than the time corresponding to the remaining pressure differences other than the plurality of target pressure differences; Determine the average pressure difference among the multiple target pressure differences; In response to the duty cycle data being within a preset duty cycle interval, the pressure change state is determined based on the average pressure difference and the preset pressure difference.

4. The method according to claim 3, characterized in that, In response to the duty cycle data being within a preset duty cycle interval, the pressure change state is determined based on the average pressure difference and a preset pressure difference, including: In response to the duty cycle data being within the preset duty cycle interval and the average pressure difference being greater than the preset pressure difference, the pressure change state is determined to be an abnormal pressure change state, wherein the abnormal pressure change state is used to indicate the abnormal pressure change state during the process of the injection system injecting the exhaust gas treatment object. In response to the duty cycle data being within the preset duty cycle interval and the average pressure difference being less than or equal to the preset pressure difference, the pressure change state is determined to be a normal pressure change state, wherein the normal pressure change state is used to represent the normal pressure change state during the process of the injection system injecting the exhaust gas treatment object.

5. The method according to claim 1, characterized in that, Based on the pressure change state, the injection function of the injection system is tested to obtain the function test results, including: In response to the pressure change state being an abnormal pressure change state, the injection function is tested to obtain the first function test result, wherein the abnormal pressure change state is used to indicate the abnormal pressure change state during the process of the injection system injecting the exhaust gas treatment object, and the first function test result is used to indicate that the injection function is the abnormal injection function. In response to the pressure change state being a normal pressure change state, the injection function is tested to obtain the function test result as a second function test result. The normal pressure change state is used to indicate the normal pressure change state during the process of the injection system injecting the exhaust gas treatment object, and the second function test result is used to indicate that the injection function is the normal injection function.

6. The method according to claim 1, characterized in that, Based on the function detection results, a prompt message is output, including: In response to the function detection result being a first function detection result, the prompt information is output as a first prompt information, wherein the first function detection result is used to indicate that the spraying function is the abnormal spraying function, and the first prompt information is used to prompt the spraying system to perform maintenance operations; In response to the function detection result being a second function detection result, the prompt information is output as a second prompt information, and the next pressure data of the pressure data is obtained, the next pressure data is used as the pressure data, and the following steps are returned to be executed: based on the pressure data, the pressure change state of the exhaust gas treatment object is determined, wherein the second function detection result is used to indicate that the injection function is the normal injection function, and the second prompt information is used to indicate that the injection system does not require maintenance operation.

7. The method according to any one of claims 1 to 6, characterized in that, The method further includes: In response to the completion of the maintenance operation of the injection system, the injection function of the injection system after maintenance is detected to obtain the maintenance function detection result, wherein the maintenance function detection result is used to indicate whether the injection function of the injection system after maintenance is the normal injection function or the abnormal injection function. In response to the maintenance function test result being the first maintenance function test result, the maintenance process ends, wherein the first maintenance function test result is used to indicate that the spraying function of the spraying system after maintenance is the normal spraying function; In response to the maintenance function detection result being a second maintenance function detection result, the prompt information is output as a third prompt information, wherein the second maintenance function detection result is used to indicate that the spraying function of the spraying system after maintenance is the abnormal spraying function, and the third prompt information is used to indicate that an abnormal maintenance event has occurred in the spraying system after maintenance.

8. A detection device for an injection system in a vehicle, characterized in that, include: The acquisition unit is used to acquire pressure data of the exhaust gas treatment object injected by the injection system, wherein the pressure data is used to represent the pressure experienced by the exhaust gas treatment object during the flow path, and the flow path is located between the injection system and the vehicle's exhaust gas discharge system. The determining unit is used to determine the pressure change state of the exhaust gas treatment object based on the pressure data and the duty cycle data of the injection system, wherein the duty cycle data is used to represent the proportion of the injection system's operating time to the injection cycle, and the pressure change state is used to represent the pressure change state during the process of the injection system injecting the exhaust gas treatment object. The detection unit is used to detect the injection function of the injection system based on the pressure change state and obtain a function detection result, wherein the function detection result is used to indicate whether the injection function is a normal injection function or an abnormal injection function. The output unit is used to output a prompt message based on the function detection result, wherein the prompt message is used to indicate whether the injection system needs maintenance.

9. A processor, characterized in that, The processor is used to run a program, wherein the program is executed by the processor to perform the method according to any one of claims 1 to 7.

10. An electronic device, characterized in that, include: Memory, which stores executable programs; A processor for running the program, wherein the program, when running, performs the method according to any one of claims 1 to 7.

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