Method, apparatus, and electronic device for interrupting dpf regeneration

Abstract

The application provides a DPF regeneration interruption method, device and electronic equipment. The method comprises the following steps: a control step, in the case that the DOC reports an efficiency low fault, controlling the engine to perform DOC thermal management, wherein the efficiency low fault is a fault caused by the fact that the gas conversion efficiency of the DOC is lower than a preset efficiency threshold; a calculation step, in the case that the DOC thermal management time is greater than a preset time threshold, calculating the gas conversion efficiency of the DOC; in the case that the gas conversion efficiency is lower than the preset efficiency threshold, the number of times of non-recovery is increased by one, and the control step and the calculation step are continued to be executed at least once until the number of times of non-recovery is greater than a preset threshold, and DPF regeneration is prohibited. Through the application, the problem that the existing technology still continues to regenerate after the DOC efficiency is low, which can cause the accumulation of hydrocarbons and cause blockage, is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of DPF regeneration, in particular to a DPF regeneration interruption method, a DPF regeneration interruption device, a computer readable storage medium and an electronic device. BACKGROUND

[0002] DPF (Diesel Particulate Filter, DPF for short) regeneration refers to that in the long-term work of DPF, the gradual increase of particulate matter in the trap will cause the back pressure of the engine to rise, resulting in the decline of the engine performance, so the deposited particulate matter needs to be removed regularly to restore the filtering performance of the DPF.

[0003] DPF regeneration has two methods of active regeneration and passive regeneration: active regeneration refers to using external energy to increase the temperature in the DPF to make the particulate matter burn. When the pressure difference sensor before and after the DPF detects that the back pressure before and after the DPF is too large, it is considered that the carbon accumulation amount that the DPF can bear has been reached, at this time, the temperature in the DPF is increased by external energy, for example, diesel is injected before the DOC (Diesel Oxidation Catalysis, DOC for short) and burned, so that the temperature in the DPF reaches a certain temperature, and the deposited particulate matter will oxidize and burn, achieving the purpose of regeneration. Passive regeneration refers to that in a certain temperature range, NO2 in the exhaust gas has strong oxidation ability to the trapped particulate matter, so NO2 can be used as an oxidizing agent to remove the particulate matter in the particulate trap and generate CO2, and NO2 is reduced to NO, thereby achieving the purpose of removing the particulate matter.

[0004] At present, after the DOC efficiency is low during the regeneration process, the regeneration is still continued, which will cause the accumulation of HC (hydrocarbon) in the DPF, easily causing the blockage of the aftertreatment and threatening the use safety of the diesel engine. Therefore, a regeneration interruption method is needed. SUMMARY

[0005] The main purpose of the present application is to provide a DPF regeneration interruption method, a DPF regeneration interruption device, a computer readable storage medium and an electronic device to at least solve the problem that the DOC efficiency is low and the regeneration is still continued, which will cause the accumulation of hydrocarbons and cause blockage in the prior art.

[0006] In order to achieve the above object, according to one aspect of the present application, there is provided a method for interrupting DPF regeneration, comprising: a control step of controlling an engine to perform DOC thermal management in the case that a DOC reports an efficiency low fault, wherein the efficiency low fault is a fault that occurs due to the fact that a gas conversion efficiency of the DOC is lower than a preset efficiency threshold; a calculation step of calculating the gas conversion efficiency of the DOC in the case that a time of the DOC thermal management is greater than a preset time threshold; and in the case that the gas conversion efficiency is lower than the preset efficiency threshold, increasing a number of times of non-recovery by one, and continuing to perform the control step and the calculation step at least once until the number of times of non-recovery is greater than a preset threshold, and prohibiting DPF regeneration, wherein the number of times of non-recovery represents the number of times of the efficiency low fault of the DOC.

[0007] Optionally, the calculation of the gas conversion efficiency of the DOC comprises: obtaining a first measured temperature value of an upstream temperature sensor of the DOC and a second measured temperature value of a downstream temperature sensor of the DOC, and calculating an absolute value of a difference between the second measured temperature value and the first measured temperature value to obtain a first difference absolute value, and integrating the first difference absolute value to obtain a first integral value; calculating a DOC upstream temperature and a DOC downstream temperature through a temperature model, and calculating an absolute value of a difference between the DOC downstream temperature and the DOC upstream temperature to obtain a second difference absolute value, and integrating the second difference absolute value to obtain a second integral value, wherein the DOC upstream temperature represents a temperature of gas before entering the DOC, and the DOC downstream temperature represents a temperature of gas after passing through the DOC; and calculating a ratio of the first integral value and the second integral value to obtain the gas conversion efficiency.

[0008] Optionally, the prohibition of DPF regeneration comprises: electrically heating the DOC according to a predetermined temperature and a predetermined time period; calculating the gas conversion efficiency of the DOC again after the predetermined time period; and prohibiting the DPF regeneration in the case that the gas conversion efficiency is lower than the preset efficiency threshold.

[0009] Optionally, the method further comprises: controlling the DPF to perform regeneration in the case that the gas conversion efficiency is greater than or equal to the preset efficiency threshold.

[0010] Optionally, after the prohibition of DPF regeneration, the method further comprises: outputting a DOC failure fault alarm; and outputting troubleshooting prompt information to prompt a vehicle to enter a service station for further fault troubleshooting.

[0011] Optionally, the control of the engine to perform DOC thermal management comprises: adjusting an intake throttle valve of the engine so that a DOC upstream temperature is greater than a preset temperature threshold, wherein the DOC upstream temperature represents a temperature of gas before entering the DOC.

[0012] Optionally, in the event of a reported DOC inefficiency fault, the method further includes: stopping the injection of hydrocarbons into the DOC.

[0013] According to another aspect of this application, a DPF regeneration interruption device is provided, comprising: a control unit for executing a control step, wherein, upon reporting a low DOC efficiency fault, the control unit controls the engine to perform DOC thermal management, wherein the low DOC efficiency fault is a fault caused by the gas conversion efficiency of the DOC being lower than a preset efficiency threshold; a calculation unit for executing a calculation step, wherein, if the duration of the DOC thermal management is greater than a preset time threshold, the calculation unit calculates the gas conversion efficiency of the DOC; and a prohibition unit for, upon the gas conversion efficiency being lower than the preset efficiency threshold, incrementing the number of unrecovered events by one, continuing to execute the control step and the calculation step at least once, until the number of unrecovered events is greater than the preset threshold, and prohibiting DPF regeneration, wherein the number of unrecovered events represents the number of times the low DOC efficiency fault has occurred.

[0014] According to another aspect of this application, a computer-readable storage medium is provided, the computer-readable storage medium including a stored program, wherein, when the program is executed, it controls the device where the computer-readable storage medium is located to perform any of the DPF regeneration interrupt methods described above.

[0015] According to another aspect of this application, an electronic device is provided, comprising: one or more processors, a memory, and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, the one or more programs including an interrupt method for performing any of the DPF regeneration methods described above.

[0016] Applying the technical solution of this application, when the DOC reports a low efficiency fault, the engine is controlled to perform DOC thermal management; if the DOC thermal management time exceeds a preset time threshold, the gas conversion efficiency of the DOC is calculated; if the gas conversion efficiency is lower than the preset efficiency threshold, the number of unrecovered events increases by one, and the control and calculation steps are executed at least once more, until the number of unrecovered events exceeds the preset threshold, at which point DPF regeneration is prohibited. Compared with the prior art, where regeneration continues even after the DOC reports a low efficiency fault, this application accelerates gas conversion through thermal management when the DOC efficiency is low. After thermal management, if the gas conversion efficiency is still low and the number of unrecovered events exceeds the preset threshold, DPF regeneration is prohibited, avoiding further blockages and other faults. Therefore, it can solve the problem in the prior art where continued regeneration after a low DOC efficiency leads to hydrocarbon accumulation and blockage, achieving the effect of timely interruption of DPF regeneration. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:

[0018] Figure 1 A hardware structure block diagram of a mobile terminal that performs an interrupt method for DPF regeneration according to an embodiment of this application is shown.

[0019] Figure 2 A flowchart illustrating an interruption method for DPF regeneration provided in an embodiment of this application is shown.

[0020] Figure 3 A flowchart illustrating a method for calculating the gas conversion efficiency of a DOC according to an embodiment of this application is shown.

[0021] Figure 4 A flowchart illustrating a method for preventing DPF regeneration according to an embodiment of this application is shown;

[0022] Figure 5 The illustration shows a flowchart of a specific DPF regeneration interruption method provided by an embodiment of this application;

[0023] Figure 6 A structural block diagram of an interruption device for DPF regeneration provided in an embodiment of this application is shown.

[0024] The above figures include the following reference numerals:

[0025] 102. Processor; 104. Memory; 106. Transmission device; 108. Input / output device. Detailed Implementation

[0026] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0027] 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 of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0028] 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 for the embodiments of this application 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.

[0029] For ease of description, the following explains some of the nouns or terms used in the embodiments of this application:

[0030] DOC: Diesel Oxidation Catalysis, abbreviated as DOC, is a particulate oxidation catalysis technology.

[0031] DPF: Diesel Particulate Filter, abbreviated as DPF.

[0032] Particulate matter: Particulate matter contained in engine exhaust generally includes two components: soot and ash. Soot refers to the part that can be burned off through regeneration, while ash refers to the non-combustible components. They will continue to accumulate in the DPF. When a certain amount of accumulation is reached, it is necessary to go to a service station for cleaning.

[0033] Active regeneration: Diesel fuel is injected through the engine rear injection or the seventh fuel injector, causing soot to react with O2 at high temperature (above 500℃), which generally occurs cyclically.

[0034] Passive regeneration: Through engine thermal management measures or when the engine is operating under high temperature conditions, soot reacts with NO2 at a lower temperature (generally 350℃-450℃), which usually occurs continuously.

[0035] As described in the background section, in the prior art, the continued regeneration of DOC after its efficiency is low can lead to the accumulation of hydrocarbons and blockages. To solve the problem of DOC continuing to regenerate after its efficiency is low, which can lead to the accumulation of hydrocarbons and blockages, embodiments of this application provide a method for interrupting DPF regeneration, a device for interrupting DPF regeneration, a computer-readable storage medium, and an electronic device.

[0036] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0037] The methods and embodiments provided in this application can be executed on a mobile terminal, computer terminal, or similar computing device. Taking running on a mobile terminal as an example, Figure 1 This is a hardware structure block diagram of a mobile terminal for an interruption method of DPF regeneration according to an embodiment of the present invention. Figure 1 As shown, a mobile terminal may include one or more ( Figure 1 Only one is shown in the diagram. A processor 102 (which may include, but is not limited to, a microprocessor MCU or a programmable logic device FPGA, etc.) and a memory 104 for storing data are also shown. The mobile terminal may further include a transmission device 106 for communication functions and an input / output device 108. Those skilled in the art will understand that... Figure 1 The structure shown is for illustrative purposes only and does not limit the structure of the mobile terminal described above. For example, the mobile terminal may also include components that are more... Figure 1 The more or fewer components shown, or having the same Figure 1 The different configurations shown.

[0038] The memory 104 can be used to store computer programs, such as application software programs and modules, like the computer program corresponding to the DPF regeneration interrupt method in this embodiment of the invention. The processor 102 executes various functional applications and data processing by running the computer program stored in the memory 104, thereby implementing the above-described method. The memory 104 may include high-speed random access memory and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some instances, the memory 104 may further include memory remotely located relative to the processor 102, and these remote memories can be connected to the mobile terminal via a network. Examples of the aforementioned networks include, but are not limited to, the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof. The transmission device 106 is used to receive or send data via a network. Specific examples of the aforementioned networks may include wireless networks provided by the mobile terminal's communication provider. In one example, the transmission device 106 includes a network interface controller (NIC), which can be connected to other network devices via a base station to communicate with the Internet. In one example, the transmission device 106 may be a radio frequency (RF) module, which is used to communicate with the Internet wirelessly.

[0039] This embodiment provides an interruption method for DPF regeneration running on a mobile terminal, computer terminal, or similar computing device. 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. 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.

[0040] Figure 2 This is a flowchart of an interruption method for DPF regeneration according to an embodiment of this application. Figure 2 As shown, the method includes the following steps:

[0041] Step S201, control step: when the DOC reports a low efficiency fault, control the engine to perform DOC thermal management, wherein the low efficiency fault is caused by the gas conversion efficiency of the DOC being lower than a preset efficiency threshold.

[0042] Specifically, HC hydrocarbons in DOC (Diesel Oxidation Catalysis) need to be converted into pollution-free gases for discharge. In the event of a DOC malfunction, the HC conversion efficiency is low, and a low HC conversion efficiency fault will be reported. In the event of a low efficiency fault reported by DOC, this application attempts to help it complete regeneration through thermal management.

[0043] Step S202, Calculation step: If the thermal management time of the above DOC is greater than a preset time threshold, calculate the gas conversion efficiency of the above DOC.

[0044] Specifically, after thermal management, if the thermal management time exceeds a preset time threshold, that is, after a certain period of thermal management, the gas conversion efficiency of DOC is calculated to determine whether the gas conversion efficiency has recovered to the normal level.

[0045] Step S203: If the gas conversion efficiency is lower than the preset efficiency threshold, the number of unrecovered events increases by one, and the control step and the calculation step are executed at least once more until the number of unrecovered events exceeds the preset threshold. DPF regeneration is then prohibited. The number of unrecovered events represents the number of times the DOC experiences a low efficiency fault.

[0046] Specifically, if the gas conversion efficiency is still lower than the preset efficiency threshold, it means that the gas conversion efficiency has not recovered. Therefore, the number of times it has not recovered is counted. If the gas conversion efficiency is lower than the preset efficiency threshold once, the number of times it has not recovered is increased by one. This continues until the number of times it has not recovered exceeds a certain limit, i.e., the preset threshold. This indicates that the gas conversion efficiency of the DOC has not recovered, so its regeneration is prohibited to avoid problems such as blockage caused by continued regeneration.

[0047] In this embodiment, when the DOC reports a low efficiency fault, the engine is controlled to perform DOC thermal management. If the DOC thermal management time exceeds a preset time threshold, the gas conversion efficiency of the DOC is calculated. If the gas conversion efficiency is lower than the preset efficiency threshold, the number of unrecovered events increases by one, and the control and calculation steps are executed at least once more, until the number of unrecovered events exceeds the preset threshold, at which point DPF regeneration is prohibited. Compared with existing technologies where regeneration continues even after the DOC reports a low efficiency fault, this application accelerates gas conversion through thermal management when the DOC efficiency is low. After thermal management, if the gas conversion efficiency remains low and the number of unrecovered events exceeds the preset threshold, DPF regeneration is prohibited to avoid further blockages and other faults. Therefore, this solves the problem in existing technologies where continued regeneration after a low DOC efficiency leads to hydrocarbon accumulation and blockage, achieving the effect of timely interruption of DPF regeneration.

[0048] In the specific implementation process, the above step S202, which calculates the gas conversion efficiency of the DOC, can be achieved through the following steps: (e.g.) Figure 3 As shown, step S2021: Obtain the first measured temperature value from the upstream temperature sensor of the DOC and the second measured temperature value from the downstream temperature sensor of the DOC, and calculate the absolute value of the difference between the second measured temperature value and the first measured temperature value to obtain a first absolute value of the difference. Integrate the first absolute value of the difference to obtain a first integral value. Step S2022: Calculate the upstream temperature and downstream temperature of the DOC using a temperature model, and calculate the absolute value of the difference between the downstream temperature and the upstream temperature of the DOC to obtain a second absolute value of the difference. Integrate the second absolute value of the difference to obtain a second integral value. Here, the upstream temperature of the DOC represents the temperature of the gas before entering the DOC, and the downstream temperature of the DOC represents the temperature of the gas after passing through the DOC. Step S2023: Calculate the ratio of the first integral value to the second integral value to obtain the gas conversion efficiency. This method calculates the gas conversion efficiency through the above steps, thus accurately calculating the gas conversion efficiency within the DOC.

[0049] Specifically, the conversion efficiency of HC (hydrocarbons) within the DOC can be calculated using the temperature difference within the DOC. This is achieved by dividing the actual measured temperature difference by the integral value of the temperature difference calculated by the model. Specifically, the absolute value of the difference between the downstream and upstream temperature sensor readings of the DOC is integrated with the absolute value of the difference between the downstream and upstream temperatures calculated by the temperature model, and the ratio of these integrals is calculated to obtain the gas conversion efficiency.

[0050] In some alternative implementations, step S203 above prohibits DPF regeneration, which can be achieved through the following steps: such as Figure 4 As shown, step S2031: The DOC is electrically heated according to a predetermined temperature and a predetermined time period; after the predetermined time period, the gas conversion efficiency of the DOC is calculated again; step S2032: If the gas conversion efficiency is lower than the preset efficiency threshold, the DPF regeneration is prohibited. This method prohibits DPF regeneration through the above steps, allowing electric heating to continue after thermal management and before the gas conversion efficiency recovers, in an attempt to improve the gas conversion efficiency.

[0051] Specifically, if the number of unrecovered cycles exceeds a preset threshold, it indicates that the gas conversion efficiency of the DOC has not recovered after thermal management. In this case, the DOC can be further heated electrically, with a preset temperature of 600℃ and a preset time period of 30 minutes. After 30 minutes of electric heating, the gas conversion efficiency of the DOC is recalculated. If the gas conversion efficiency is still lower than the preset threshold, DPF regeneration is prohibited. In practical applications, DPF regeneration can be directly prohibited if the number of unrecovered cycles exceeds the preset threshold; alternatively, after the number of unrecovered cycles exceeds the preset threshold, the DOC can be electrically heated using the above steps, and then the gas conversion efficiency can be recalculated. If the gas conversion efficiency is still lower than the preset threshold, DPF regeneration is then prohibited.

[0052] In some optional embodiments, the method further includes the step of: controlling the DPF to regenerate when the gas conversion efficiency is greater than or equal to the preset efficiency threshold. This method, through the above steps, controls the DPF to continue regenerating when the gas conversion efficiency is greater than or equal to the preset efficiency threshold, that is, when the gas conversion efficiency has been restored.

[0053] In the specific implementation process, after calculating the gas conversion efficiency, if the gas conversion efficiency is greater than or equal to the above-mentioned preset efficiency threshold, it indicates that the gas conversion efficiency of DOC has been restored and can continue to be regenerated. Therefore, the DPF is controlled to continue to be regenerated.

[0054] In some optional implementations, after disabling DPF regeneration, the method further includes: outputting a DOC failure alarm; and outputting a troubleshooting prompt to alert the vehicle to proceed to a service station for further troubleshooting. This method provides an alarm through the above steps, thus promptly prompting staff to bring the vehicle to a service station for further troubleshooting.

[0055] In the specific implementation process, after DPF regeneration is disabled, a DOC failure alarm is output to warn of DOC failure, and troubleshooting prompts are output to prompt users or staff to go to the service station for further investigation of the cause of the failure (e.g., air leakage, sensor, injector, DOC aging, etc.).

[0056] To perform thermal management of the DOC, step S201 above controls the engine to perform DOC thermal management, which can be achieved through the following steps: adjusting the engine's intake throttle valve so that the upstream temperature of the DOC is greater than a preset temperature threshold, wherein the upstream temperature of the DOC represents the temperature of the gas before it enters the DOC. This method performs thermal management through the above steps, which can accelerate the gas conversion efficiency in the DOC.

[0057] Specifically, thermal management can adjust the intake throttle valve and enable engine thermal management measures such as afterburner injection to bring the upstream temperature of the DOC to a preset temperature threshold. The preset temperature threshold can be 300°C, which means that the upstream temperature of the DOC is above 300°C to ensure the complete combustion of gases such as hydrocarbons.

[0058] In some alternative implementations, when a low DOC efficiency fault is reported, the method further includes the step of stopping the injection of hydrocarbons into the DOC. This method prevents hydrocarbon injection in the event of low efficiency, thus preventing problems such as excessive particulate matter failing to convert and causing blockages.

[0059] During the actual implementation process, a low DOC efficiency fault is reported during regeneration, and the injection of HC (hydrocarbons) is stopped.

[0060] To enable those skilled in the art to better understand the technical solution of this application, the implementation process of the DPF regeneration interruption method of this application will be described in detail below with reference to specific embodiments.

[0061] This embodiment relates to a specific method for interrupting DPF regeneration, such as... Figure 5 As shown, it includes the following steps:

[0062] Step S1: Begin;

[0063] Step S2: If a low DOC efficiency fault is reported during regeneration, proceed to step S3 if the fault is present, and proceed to step S1 if the fault is not present.

[0064] Step S3: Stop HC injection, perform thermal management, and increase the thermal management temperature;

[0065] Step S4: Determine if the thermal management time is greater than the time limit. If yes, proceed to step S5; otherwise, proceed to step S3.

[0066] Step S5: Perform efficiency testing;

[0067] Step S6: Has efficiency been restored? If yes, proceed to step S7; if no, proceed to step S8.

[0068] Step S7: Continue regeneration;

[0069] Step S8: Accumulate the number of times efficiency has not recovered;

[0070] Step S9: Determine if the number of times efficiency has not recovered exceeds the limit. If yes, proceed to step S10; otherwise, proceed to step S8.

[0071] Step S10: Report a DOC system failure and disable regeneration;

[0072] Step S11: End.

[0073] This application also provides an interruption device for DPF regeneration. It should be noted that the interruption device for DPF regeneration in this application can be used to execute the interruption method for DPF regeneration provided in this application. This device is used to implement the above embodiments and preferred embodiments; details already described will not be repeated. As used below, the term "module" can refer to a combination of software and / or hardware that implements a predetermined function. Although the device described in the following embodiments is preferably implemented in software, hardware implementation, or a combination of software and hardware, is also possible and contemplated.

[0074] The following describes the interruption device for DPF regeneration provided in the embodiments of this application.

[0075] Figure 6 This is a schematic diagram of an interruption device for DPF regeneration according to an embodiment of this application. Figure 6 As shown, the device includes:

[0076] Control unit 10 is used to execute control steps, and when a DOC low efficiency fault is reported, control the engine to perform DOC thermal management, wherein the aforementioned DOC low efficiency fault is a fault that occurs because the gas conversion efficiency of DOC is lower than a preset efficiency threshold.

[0077] Specifically, HC hydrocarbons in DOC (Diesel Oxidation Catalysis) need to be converted into pollution-free gases for discharge. In the event of a DOC malfunction, the HC conversion efficiency is low, and a low HC conversion efficiency fault will be reported. In the event of a low efficiency fault reported by DOC, this application attempts to help it complete regeneration through thermal management.

[0078] The calculation unit 20 is used to perform calculation steps, and calculate the gas conversion efficiency of the DOC when the thermal management time of the DOC is greater than a preset time threshold.

[0079] Specifically, after thermal management, if the thermal management time exceeds a preset time threshold, that is, after a certain period of thermal management, the gas conversion efficiency of DOC is calculated to determine whether the gas conversion efficiency has recovered to the normal level.

[0080] The prohibition unit 30 is used to, when the gas conversion efficiency is lower than the preset efficiency threshold, increase the number of unrecovered events by one, continue to execute the control steps and the calculation steps at least once, until the number of unrecovered events is greater than the preset threshold, and prohibit DPF regeneration, wherein the number of unrecovered events represents the number of times the DOC has experienced the low efficiency fault.

[0081] Specifically, if the gas conversion efficiency is still lower than the preset efficiency threshold, it means that the gas conversion efficiency has not recovered. Therefore, the number of times it has not recovered is counted. If the gas conversion efficiency is lower than the preset efficiency threshold once, the number of times it has not recovered is increased by one. This continues until the number of times it has not recovered exceeds a certain limit, i.e., the preset threshold. This indicates that the gas conversion efficiency of the DOC has not recovered, so its regeneration is prohibited to avoid problems such as blockage caused by continued regeneration.

[0082] In this embodiment, when the DOC reports a low efficiency fault, the engine is controlled to perform DOC thermal management. If the DOC thermal management time exceeds a preset time threshold, the gas conversion efficiency of the DOC is calculated. If the gas conversion efficiency is lower than the preset efficiency threshold, the number of unrecovered events increases by one, and the control and calculation steps are executed at least once more until the number of unrecovered events exceeds the preset threshold, at which point DPF regeneration is prohibited. Compared with existing devices that continue regeneration after the DOC reports a low efficiency fault, this application accelerates gas conversion through thermal management when the DOC efficiency is low. After thermal management, if the gas conversion efficiency is still low and the number of unrecovered events exceeds the preset threshold, DPF regeneration is prohibited to avoid further blockages and other faults. Therefore, it can solve the problem in existing technologies where continued regeneration after a low DOC efficiency leads to hydrocarbon accumulation and blockage, achieving the effect of timely interruption of DPF regeneration.

[0083] In its specific implementation, the aforementioned calculation unit includes a first integration module, a second integration module, and a first calculation module. The first integration module acquires the first measured temperature value from the upstream temperature sensor of the DOC and the second measured temperature value from the downstream temperature sensor of the DOC, calculates the absolute value of the difference between the second measured temperature value and the first measured temperature value to obtain a first absolute difference value, and integrates this first absolute difference value to obtain a first integral value. The second integration module calculates the upstream and downstream temperatures of the DOC using a temperature model, calculates the absolute value of the difference between the downstream and upstream temperatures of the DOC to obtain a second absolute difference value, and integrates this second absolute difference value to obtain a second integral value. Here, the upstream temperature of the DOC represents the temperature of the gas before entering the DOC, and the downstream temperature of the DOC represents the temperature of the gas after passing through the DOC. The first calculation module calculates the ratio of the first integral value to the second integral value to obtain the gas conversion efficiency. This device calculates the gas conversion efficiency through the above steps, thus accurately calculating the gas conversion efficiency within the DOC.

[0084] Specifically, the conversion efficiency of HC (hydrocarbons) within the DOC can be calculated using the temperature difference within the DOC. This is achieved by dividing the actual measured temperature difference by the integral value of the temperature difference calculated by the model. Specifically, the absolute value of the difference between the downstream and upstream temperature sensor readings of the DOC is integrated with the absolute value of the difference between the downstream and upstream temperatures calculated by the temperature model, and the ratio of these integrals is calculated to obtain the gas conversion efficiency.

[0085] In some optional embodiments, the aforementioned prohibition unit includes an electric heating module, a second calculation module, and a prohibition module. The electric heating module is used to electrically heat the DOC according to a predetermined temperature and a predetermined time period. The second calculation module is used to recalculate the gas conversion efficiency of the DOC after the predetermined time period. The prohibition module is used to prohibit the regeneration of the DPF if the gas conversion efficiency is lower than the preset efficiency threshold. By prohibiting DPF regeneration through the above steps, the device can continue electric heating after thermal management and before the gas conversion efficiency has recovered, in an attempt to improve the gas conversion efficiency.

[0086] Specifically, if the number of unrecovered cycles exceeds a preset threshold, it indicates that the gas conversion efficiency of the DOC has not recovered after thermal management. In this case, the DOC can be further heated electrically, with a preset temperature of 600℃ and a preset time period of 30 minutes. After 30 minutes of electric heating, the gas conversion efficiency of the DOC is recalculated. If the gas conversion efficiency is still lower than the preset threshold, DPF regeneration is prohibited. In practical applications, DPF regeneration can be directly prohibited if the number of unrecovered cycles exceeds the preset threshold; alternatively, after the number of unrecovered cycles exceeds the preset threshold, the DOC can be electrically heated using the above steps, and then the gas conversion efficiency can be recalculated. If the gas conversion efficiency is still lower than the preset threshold, DPF regeneration is then prohibited.

[0087] In some optional embodiments, the device further includes a control unit for controlling the DPF to regenerate when the gas conversion efficiency is greater than or equal to the preset efficiency threshold. The device, through the above steps, controls the DPF to continue regenerating when the gas conversion efficiency is greater than or equal to the preset efficiency threshold, that is, when the gas conversion efficiency has been restored.

[0088] In the specific implementation process, after calculating the gas conversion efficiency, if the gas conversion efficiency is greater than or equal to the above-mentioned preset efficiency threshold, it indicates that the gas conversion efficiency of DOC has been restored and can continue to be regenerated. Therefore, the DPF is controlled to continue to be regenerated.

[0089] In some optional implementations, after disabling DPF regeneration, the device further includes a first output unit and a second output unit. The first output unit outputs a DOC failure alarm, and the second output unit outputs troubleshooting information to prompt the vehicle to enter a service station for further troubleshooting. By providing alarm prompts through the above steps, the device can promptly remind staff to drive the vehicle to a service station for further troubleshooting.

[0090] In the specific implementation process, after DPF regeneration is disabled, a DOC failure alarm is output to warn of DOC failure, and troubleshooting prompts are output to prompt users or staff to go to the service station for further investigation of the cause of the failure (e.g., air leakage, sensor, injector, DOC aging, etc.).

[0091] To perform thermal management of the DOC, the control unit includes a regulating module for adjusting the engine's intake throttle valve so that the upstream temperature of the DOC is greater than a preset temperature threshold, where the upstream temperature represents the temperature of the gas before it enters the DOC. This device performs thermal management through the above steps, thereby accelerating the gas conversion efficiency within the DOC.

[0092] Specifically, thermal management can adjust the intake throttle valve and enable engine thermal management measures such as afterburner injection to bring the upstream temperature of the DOC to a preset temperature threshold. The preset temperature threshold can be 300°C, which means that the upstream temperature of the DOC is above 300°C to ensure the complete combustion of gases such as hydrocarbons.

[0093] In some alternative embodiments, in the event of a low DOC efficiency fault, the device further includes a stop unit for stopping the injection of hydrocarbons into the DOC. This device can prevent hydrocarbon injection in the event of low efficiency, thus preventing problems such as excessive unconverted particulate matter causing blockages.

[0094] During the actual implementation process, a low DOC efficiency fault is reported during regeneration, and the injection of HC (hydrocarbons) is stopped.

[0095] The aforementioned DPF regeneration interrupt device includes a processor and a memory. The control unit, calculation unit, and disable unit are all stored as program units in the memory, and the processor executes these program units stored in the memory to achieve the corresponding functions. All of the above modules reside in the same processor; alternatively, the modules may be located in different processors in any combination.

[0096] The processor contains a kernel, which retrieves the corresponding program unit from memory. One or more kernels can be configured, and adjusting kernel parameters can address the problem in existing technologies where continued regeneration of the DOC (Digital Oxygen Capacitor) despite low efficiency leads to hydrocarbon accumulation and blockages.

[0097] The memory may include non-permanent memory in computer-readable media, such as random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM, and the memory includes at least one memory chip.

[0098] This invention provides a computer-readable storage medium including a stored program, wherein, when the program is executed, it controls the device where the computer-readable storage medium is located to execute the interrupt method for DPF regeneration.

[0099] Specifically, the interruption methods for DPF regeneration include:

[0100] Step S201, control step: when the DOC reports a low efficiency fault, control the engine to perform DOC thermal management, wherein the low efficiency fault is caused by the gas conversion efficiency of the DOC being lower than a preset efficiency threshold.

[0101] Specifically, HC hydrocarbons in DOC (Diesel Oxidation Catalysis) need to be converted into pollution-free gases for discharge. In the event of a DOC malfunction, the HC conversion efficiency is low, and a low HC conversion efficiency fault will be reported. In the event of a low efficiency fault reported by DOC, this application attempts to help it complete regeneration through thermal management.

[0102] Step S202, Calculation step: If the thermal management time of the above DOC is greater than a preset time threshold, calculate the gas conversion efficiency of the above DOC.

[0103] Specifically, after thermal management, if the thermal management time exceeds a preset time threshold, that is, after a certain period of thermal management, the gas conversion efficiency of DOC is calculated to determine whether the gas conversion efficiency has recovered to the normal level.

[0104] Step S203: If the gas conversion efficiency is lower than the preset efficiency threshold, the number of unrecovered events increases by one, and the control step and the calculation step are executed at least once more until the number of unrecovered events exceeds the preset threshold. DPF regeneration is then prohibited. The number of unrecovered events represents the number of times the DOC experiences a low efficiency fault.

[0105] Specifically, if the gas conversion efficiency is still lower than the preset efficiency threshold, it means that the gas conversion efficiency has not recovered. Therefore, the number of times it has not recovered is counted. If the gas conversion efficiency is lower than the preset efficiency threshold once, the number of times it has not recovered is increased by one. This continues until the number of times it has not recovered exceeds a certain limit, i.e., the preset threshold. This indicates that the gas conversion efficiency of the DOC has not recovered, so its regeneration is prohibited to avoid problems such as blockage caused by continued regeneration.

[0106] Optionally, calculating the gas conversion efficiency of the DOC includes: obtaining a first measured temperature value from an upstream temperature sensor and a second measured temperature value from a downstream temperature sensor of the DOC, calculating the absolute value of the difference between the second measured temperature value and the first measured temperature value to obtain a first absolute value of the difference, integrating the first absolute value of the difference to obtain a first integral value; calculating the upstream temperature and downstream temperature of the DOC using a temperature model, calculating the absolute value of the difference between the downstream temperature and the upstream temperature of the DOC to obtain a second absolute value of the difference, integrating the second absolute value of the difference to obtain a second integral value, wherein the upstream temperature of the DOC represents the temperature of the gas before entering the DOC, and the downstream temperature of the DOC represents the temperature of the gas after passing through the DOC; and calculating the ratio of the first integral value to the second integral value to obtain the gas conversion efficiency.

[0107] Optionally, DPF regeneration can be prohibited by: electrically heating the DOC at a predetermined temperature and for a predetermined time period; recalculating the gas conversion efficiency of the DOC after the predetermined time period; and prohibiting DPF regeneration if the gas conversion efficiency is lower than the preset efficiency threshold.

[0108] Optionally, the above method further includes: controlling the DPF to regenerate when the gas conversion efficiency is greater than or equal to the preset efficiency threshold.

[0109] Optionally, after disabling DPF regeneration, the above method further includes: outputting a DOC failure alarm; and outputting troubleshooting prompts to guide the vehicle to a service station for further troubleshooting.

[0110] Optionally, controlling the engine to perform DOC thermal management includes: adjusting the engine's intake throttle valve so that the upstream temperature of the DOC is greater than a preset temperature threshold, wherein the upstream temperature of the DOC represents the temperature of the gas before it enters the DOC.

[0111] Optionally, in the event of a reported DOC inefficiency fault, the above method further includes: stopping the injection of hydrocarbons into the DOC.

[0112] This invention provides an electronic device, including a processor, a memory, and a program stored in the memory and executable on the processor. When the processor executes the program, it performs at least the following steps:

[0113] Step S201, control step: when the DOC reports a low efficiency fault, control the engine to perform DOC thermal management, wherein the low efficiency fault is caused by the gas conversion efficiency of the DOC being lower than a preset efficiency threshold.

[0114] Step S202, Calculation step: If the thermal management time of the above DOC is greater than a preset time threshold, calculate the gas conversion efficiency of the above DOC.

[0115] Step S203: If the gas conversion efficiency is lower than the preset efficiency threshold, the number of unrecovered events increases by one, and the control step and the calculation step are executed at least once more until the number of unrecovered events exceeds the preset threshold. DPF regeneration is then prohibited. The number of unrecovered events represents the number of times the DOC experiences a low efficiency fault.

[0116] The devices mentioned in this article can be servers, PCs, tablets, mobile phones, etc.

[0117] Optionally, calculating the gas conversion efficiency of the DOC includes: obtaining a first measured temperature value from an upstream temperature sensor and a second measured temperature value from a downstream temperature sensor of the DOC, calculating the absolute value of the difference between the second measured temperature value and the first measured temperature value to obtain a first absolute value of the difference, integrating the first absolute value of the difference to obtain a first integral value; calculating the upstream temperature and downstream temperature of the DOC using a temperature model, calculating the absolute value of the difference between the downstream temperature and the upstream temperature of the DOC to obtain a second absolute value of the difference, integrating the second absolute value of the difference to obtain a second integral value, wherein the upstream temperature of the DOC represents the temperature of the gas before entering the DOC, and the downstream temperature of the DOC represents the temperature of the gas after passing through the DOC; and calculating the ratio of the first integral value to the second integral value to obtain the gas conversion efficiency.

[0118] Optionally, DPF regeneration can be prohibited by: electrically heating the DOC at a predetermined temperature and for a predetermined time period; recalculating the gas conversion efficiency of the DOC after the predetermined time period; and prohibiting DPF regeneration if the gas conversion efficiency is lower than the preset efficiency threshold.

[0119] Optionally, the above method further includes: controlling the DPF to regenerate when the gas conversion efficiency is greater than or equal to the preset efficiency threshold.

[0120] Optionally, after disabling DPF regeneration, the above method further includes: outputting a DOC failure alarm; and outputting troubleshooting prompts to guide the vehicle to a service station for further troubleshooting.

[0121] Optionally, controlling the engine to perform DOC thermal management includes: adjusting the engine's intake throttle valve so that the upstream temperature of the DOC is greater than a preset temperature threshold, wherein the upstream temperature of the DOC represents the temperature of the gas before it enters the DOC.

[0122] Optionally, in the event of a reported DOC inefficiency fault, the above method further includes: stopping the injection of hydrocarbons into the DOC.

[0123] This application also provides a computer program product, including a computer program that, when executed by a processor, implements the steps of the methods described in the various embodiments of this application:

[0124] Step S201, control step: when the DOC reports a low efficiency fault, control the engine to perform DOC thermal management, wherein the low efficiency fault is caused by the gas conversion efficiency of the DOC being lower than a preset efficiency threshold.

[0125] Step S202, Calculation step: If the thermal management time of the above DOC is greater than a preset time threshold, calculate the gas conversion efficiency of the above DOC.

[0126] Step S203: If the gas conversion efficiency is lower than the preset efficiency threshold, the number of unrecovered events increases by one, and the control step and the calculation step are executed at least once more until the number of unrecovered events exceeds the preset threshold. DPF regeneration is then prohibited. The number of unrecovered events represents the number of times the DOC experiences a low efficiency fault.

[0127] Optionally, calculating the gas conversion efficiency of the DOC includes: obtaining a first measured temperature value from an upstream temperature sensor and a second measured temperature value from a downstream temperature sensor of the DOC, calculating the absolute value of the difference between the second measured temperature value and the first measured temperature value to obtain a first absolute value of the difference, integrating the first absolute value of the difference to obtain a first integral value; calculating the upstream temperature and downstream temperature of the DOC using a temperature model, calculating the absolute value of the difference between the downstream temperature and the upstream temperature of the DOC to obtain a second absolute value of the difference, integrating the second absolute value of the difference to obtain a second integral value, wherein the upstream temperature of the DOC represents the temperature of the gas before entering the DOC, and the downstream temperature of the DOC represents the temperature of the gas after passing through the DOC; and calculating the ratio of the first integral value to the second integral value to obtain the gas conversion efficiency.

[0128] Optionally, DPF regeneration can be prohibited by: electrically heating the DOC at a predetermined temperature and for a predetermined time period; recalculating the gas conversion efficiency of the DOC after the predetermined time period; and prohibiting DPF regeneration if the gas conversion efficiency is lower than the preset efficiency threshold.

[0129] Optionally, the above method further includes: controlling the DPF to regenerate when the gas conversion efficiency is greater than or equal to the preset efficiency threshold.

[0130] Optionally, after disabling DPF regeneration, the above method further includes: outputting a DOC failure alarm; and outputting troubleshooting prompts to guide the vehicle to a service station for further troubleshooting.

[0131] Optionally, controlling the engine to perform DOC thermal management includes: adjusting the engine's intake throttle valve so that the upstream temperature of the DOC is greater than a preset temperature threshold, wherein the upstream temperature of the DOC represents the temperature of the gas before it enters the DOC.

[0132] Optionally, in the event of a reported DOC inefficiency fault, the above method further includes: stopping the injection of hydrocarbons into the DOC.

[0133] It is obvious to those skilled in the art that the modules or steps of the present invention described above can be implemented using general-purpose computing devices. They can be centralized on a single computing device or distributed across a network of multiple computing devices. They can be implemented using computer-executable program code, and thus can be stored in a storage device for execution by a computing device. In some cases, the steps shown or described can be performed in a different order than those described herein, or they can be fabricated as separate integrated circuit modules, or multiple modules or steps can be fabricated as a single integrated circuit module. Thus, the present invention is not limited to any particular combination of hardware and software.

[0134] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0135] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0136] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0137] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0138] In a typical configuration, a computing device includes one or more processors (CPU), input / output interfaces, network interfaces, and memory.

[0139] Memory may include non-persistent memory in computer-readable media, such as random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM. Memory is an example of computer-readable media.

[0140] Computer-readable media includes both permanent and non-permanent, removable and non-removable media that can store information using any method or technology. Information can be computer-readable instructions, data structures, modules of programs, or other data. Examples of computer storage media include, but are not limited to, phase-change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technologies, CD-ROM, digital versatile optical disc (DVD) or other optical storage, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other non-transferable medium that can be used to store information accessible by a computing device. As defined herein, computer-readable media does not include transient computer-readable media, such as modulated data signals and carrier waves.

[0141] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0142] As can be seen from the above description, the embodiments of this application achieve the following technical effects:

[0143] 1) In the DPF regeneration interruption method of this application, when the DOC reports a low efficiency fault, the engine is controlled to perform DOC thermal management; if the DOC thermal management time exceeds a preset time threshold, the gas conversion efficiency of the DOC is calculated; if the gas conversion efficiency is lower than the preset efficiency threshold, the number of unrecovered events increases by one, and the control and calculation steps are executed at least once more, until the number of unrecovered events exceeds the preset threshold, at which point DPF regeneration is prohibited. Compared with the prior art, where regeneration continues even after the DOC reports a low efficiency fault, this application accelerates gas conversion through thermal management when the DOC efficiency is low. After thermal management, if the gas conversion efficiency is still low and the number of unrecovered events exceeds the preset threshold, DPF regeneration is prohibited, avoiding further blockage and other faults. Therefore, it can solve the problem in the prior art where continued regeneration after a low DOC efficiency leads to hydrocarbon accumulation and blockage, achieving the effect of timely interruption of DPF regeneration.

[0144] 2) In the DPF regeneration interruption device of this application, when the DOC reports a low efficiency fault, the engine is controlled to perform DOC thermal management; if the DOC thermal management time exceeds a preset time threshold, the gas conversion efficiency of the DOC is calculated; if the gas conversion efficiency is lower than the preset efficiency threshold, the number of unrecovered events increases by one, and the control and calculation steps are executed at least once more, until the number of unrecovered events exceeds the preset threshold, at which point DPF regeneration is prohibited. Compared with the prior art, where regeneration continues even after the DOC reports a low efficiency fault, this application accelerates gas conversion through thermal management when the DOC efficiency is low. After thermal management, if the gas conversion efficiency is still low and the number of unrecovered events exceeds the preset threshold, DPF regeneration is prohibited, avoiding further blockage and other faults. Therefore, it can solve the problem in the prior art where continued regeneration after a low DOC efficiency leads to hydrocarbon accumulation and blockage, achieving the effect of timely interruption of DPF regeneration.

[0145] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A method for interrupting DPF regeneration, characterized in that, include: The control step involves controlling the engine to perform DOC thermal management when the DOC reports a low efficiency fault. The low efficiency fault is caused by the gas conversion efficiency of the DOC being lower than a preset efficiency threshold. The calculation step involves calculating the gas conversion efficiency of the DOC when the thermal management time of the DOC exceeds a preset time threshold. If the gas conversion efficiency is lower than the preset efficiency threshold, the number of unrecovered failures increases by one, and the control step and the calculation step are executed at least once more, until the number of unrecovered failures exceeds the preset threshold, at which point DPF regeneration is prohibited. Here, the number of unrecovered failures represents the number of times the DOC experiences a low efficiency fault. Calculating the gas conversion efficiency of the DOC includes: Obtain the first measured temperature value of the upstream temperature sensor of the DOC and the second measured temperature value of the downstream temperature sensor of the DOC, calculate the absolute value of the difference between the second measured temperature value and the first measured temperature value to obtain the first absolute value of the difference, and integrate the first absolute value of the difference to obtain the first integral value; The upstream and downstream temperatures of the DOC are calculated using a temperature model. The absolute value of the difference between the downstream and upstream temperatures of the DOC is then calculated to obtain a second absolute value of the difference. This second absolute value of the difference is then integrated to obtain a second integral value. Here, the upstream temperature of the DOC represents the temperature of the gas before it enters the DOC, and the downstream temperature of the DOC represents the temperature of the gas after it passes through the DOC. The ratio of the first integral value to the second integral value is calculated to obtain the gas conversion efficiency, which is the conversion efficiency of hydrocarbons in the DOC.

2. The interruption method according to claim 1, characterized in that, DPF regeneration is prohibited, including: The DOC is electrically heated according to a predetermined temperature and a predetermined time period; After the predetermined time period, the gas conversion efficiency of the DOC is calculated again; If the gas conversion efficiency is lower than the preset efficiency threshold, the DPF regeneration is prohibited.

3. The interruption method according to claim 1, characterized in that, The method further includes: When the gas conversion efficiency is greater than or equal to the preset efficiency threshold, the DPF is controlled to regenerate.

4. The interruption method according to claim 1, characterized in that, After disabling DPF regeneration, the method further includes: Output DOC failure alarm; Output troubleshooting prompts to guide the vehicle to a service station for further troubleshooting.

5. The interruption method according to claim 1, characterized in that, Controlling engine DOC thermal management includes: Adjust the engine's intake throttle valve so that the upstream temperature of the DOC is greater than a preset temperature threshold, wherein the upstream temperature of the DOC represents the temperature of the gas before it enters the DOC.

6. The interruption method according to claim 1, characterized in that, In the event of a low DOC efficiency fault, the method further includes: Stop injecting hydrocarbons into the DOC.

7. An interruption device for DPF regeneration, characterized in that, include: The control unit is used to execute control steps, and when a low DOC efficiency fault is reported, it controls the engine to perform DOC thermal management, wherein the low DOC efficiency fault is a fault that occurs because the gas conversion efficiency of DOC is lower than a preset efficiency threshold. The calculation unit is used to perform calculation steps, and calculate the gas conversion efficiency of the DOC when the thermal management time of the DOC is greater than a preset time threshold. The prohibition unit is configured to, when the gas conversion efficiency is lower than the preset efficiency threshold, increment the number of unrecovered events by one, continue executing the control step and the calculation step at least once, until the number of unrecovered events exceeds the preset threshold, and then prohibit DPF regeneration. The number of unrecovered events represents the number of times the DOC experiences a low efficiency fault. The calculation unit includes a first integration module, a second integration module, and a first calculation module. The first integration module is used to acquire a first measured temperature value from the upstream temperature sensor of the DOC and a second measured temperature value from the downstream temperature sensor of the DOC, and calculate the absolute value of the difference between the second measured temperature value and the first measured temperature value to obtain a first absolute value of the difference. The first absolute value of the difference is then integrated to obtain a first integral value. The second integration module is used to calculate the upstream temperature and downstream temperature of the DOC using a temperature model, and calculate the absolute value of the difference between the downstream temperature and the upstream temperature of the DOC to obtain a second absolute value of the difference. The second absolute value of the difference is then integrated to obtain a second integral value. The upstream temperature of the DOC represents the temperature of the gas before it enters the DOC, and the downstream temperature of the DOC represents the temperature of the gas after it passes through the DOC. The first calculation module is used to calculate the ratio of the first integral value and the second integral value to obtain the gas conversion efficiency, which is the conversion efficiency of hydrocarbons within the DOC.

8. A computer-readable storage medium, characterized in that, The computer-readable storage medium includes a stored program, wherein, when the program is executed, it controls the device on which the computer-readable storage medium is located to perform the interruption method for DPF regeneration as described in any one of claims 1 to 6.

9. An electronic device, characterized in that, include: One or more processors, a memory, and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, the one or more programs including an interrupt method for performing DPF regeneration as described in any one of claims 1 to 6.

Images