Parking regeneration control method, device, equipment and storage medium

Abstract

The present invention relates to a parking regeneration control method, device, equipment and storage medium, wherein the control method includes: obtaining the regeneration temperature upstream of the particulate filter according to the vehicle entering the parking regeneration state; when the regeneration time reaches a first preset time, determining whether the regeneration temperature is lower than the first preset temperature; according to the regeneration temperature being lower than the first preset temperature, controlling the vehicle to continue parking regeneration, and ending parking regeneration when the regeneration time reaches a second preset time. The parking regeneration control method according to the present invention helps to ensure the consistency of parking regeneration time, avoids the waste of parking regeneration verification time when the whole vehicle is offline, and can solve the problem of different parking regeneration time when the parking regeneration verification is performed through the existing one-key regeneration function. At the same time, it can also effectively detect vehicles with defects to facilitate targeted repairs.

Description

Technical Field

[0001] The present invention belongs to the technical field of vehicle exhaust emissions, and in particular relates to a control method, device, equipment and storage medium for parking regeneration. Background Art

[0002] When a vehicle rolls off the assembly line, the OEM needs to verify the parking regeneration function. Currently, parking regeneration verification is usually performed through the one-button regeneration function.

[0003] The current control method for the one-touch regeneration function is the same as that for normal carbon load-activated regeneration. The regeneration phases are transitioned based on exhaust temperature until the carbon load model reaches the regeneration exit threshold. If the regeneration temperature is insufficient, the regeneration injection phase will be extended until the maximum allowed regeneration injection time is reached, at which point the regeneration phase will exit. Due to factors such as vehicle load and engine performance consistency, insufficient regeneration temperature often occurs during vehicle rolloff, resulting in varying regeneration times during the validation process.

[0004] Since the one-button regeneration function is used for parking regeneration verification, the parking regeneration time will vary due to differences in vehicle load and engine consistency. In addition, due to the large differences in parking regeneration time, it is impossible to screen out vehicles with problems, wasting a lot of parking regeneration verification time and reducing the work efficiency of the vehicle off-line. Summary of the Invention

[0005] The present invention aims to at least resolve the problem of varying parking regeneration times when verifying parking regeneration using the one-touch regeneration function. This objective is achieved through the following technical solutions:

[0006] A first aspect of the present invention provides a control method for parking regeneration, comprising:

[0007] According to the vehicle entering the parking regeneration state, the regeneration time of the parking regeneration entering the regeneration injection stage is obtained;

[0008] Obtain the regeneration temperature upstream of the particulate filter;

[0009] When the regeneration time reaches a first preset time, determining whether the regeneration temperature is lower than a first preset temperature;

[0010] According to the regeneration temperature being lower than the first preset temperature, the vehicle is controlled to continue the parking regeneration, and the parking regeneration is terminated when the regeneration time reaches a second preset time.

[0011] The parked regeneration control method of the present invention involves the following steps: when a vehicle enters the parked regeneration state via the one-touch regeneration function and enters the regeneration injection phase, the electronic control unit measures the regeneration time of the vehicle during this phase and simultaneously obtains the regeneration temperature upstream of the particulate filter. The method then determines whether the regeneration temperature is below the first preset temperature when the regeneration time reaches a first preset time. If so, the electronic control unit controls the vehicle to terminate parked regeneration when the regeneration time reaches a second preset time. This control method determines whether the vehicle can perform normal parked regeneration by setting judgment conditions, such as the first preset temperature. If the vehicle cannot complete normal parked regeneration, the method controls the vehicle to exit parked regeneration at the second preset time. This arrangement helps ensure consistent parked regeneration time, avoids wasted vehicle offline time, and addresses the issue of varying parked regeneration times when verifying parked regeneration via the one-touch regeneration function. Furthermore, it can effectively detect defective vehicles for targeted repairs.

[0012] In addition, the control method for parking regeneration according to the present invention may also have the following additional technical features:

[0013] In some embodiments of the present invention, the minimum value of the first preset temperature is set to a detection temperature that is 40° C. lower than the regeneration operating temperature.

[0014] In some embodiments of the present invention, further comprising:

[0015] When the regeneration time reaches the first preset time, determining whether the regeneration temperature is higher than a second preset temperature;

[0016] According to the regeneration temperature being higher than the second preset temperature, the vehicle is controlled to end the parking regeneration.

[0017] In some embodiments of the present invention, further comprising:

[0018] According to the regeneration temperature being not lower than the first preset temperature and not higher than the second preset temperature, the vehicle is controlled to continue the parking regeneration until completion.

[0019] In some embodiments of the present invention, controlling the vehicle to continue parking regeneration until completion includes:

[0020] When the carbon load of the particulate trap is lower than a preset threshold, the vehicle is controlled to exit parking regeneration.

[0021] In some embodiments of the present invention, controlling the vehicle to continue parking regeneration until completion further includes:

[0022] The vehicle is controlled to exit parking regeneration according to the maximum operating time from the regeneration time to the regeneration injection phase.

[0023] In some embodiments of the present invention, after the vehicle ends parking regeneration when the regeneration time reaches the second preset time, the method further includes:

[0024] The control vehicle is displayed as abnormal parking regeneration.

[0025] A second aspect of the present invention further provides a control device for parking regeneration, the control device being configured to execute the above-mentioned parking regeneration control method, the control device comprising:

[0026] an acquisition unit, for acquiring, when the vehicle is in a parking regeneration mode, a regeneration time when the parking regeneration enters a regeneration injection phase, and a regeneration temperature upstream of the particulate filter;

[0027] a determining unit, configured to determine whether the regeneration temperature satisfies a first preset condition when the regeneration time reaches a first preset time;

[0028] Control unit, used to control the vehicle to exit or enter parking regeneration mode.

[0029] A third aspect of the present invention further provides a control device for parking regeneration, wherein the control device comprises:

[0030] one or more processors;

[0031] a memory for storing one or more programs;

[0032] When the one or more programs are executed by the one or more processors, the one or more processors implement the above-mentioned parking regeneration control method.

[0033] A fourth aspect of the present invention further provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the above-mentioned parking regeneration control method. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present invention. The same reference numerals are used throughout the accompanying drawings to denote the same components. In the accompanying drawings:

[0035] Figure 1 Schematic diagram of the flow of a control method for parking regeneration according to an embodiment of the present invention;

[0036] Figure 2 Schematic diagram of the logic of the control method of parking regeneration according to an embodiment of the present invention. DETAILED DESCRIPTION

[0037] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. Rather, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0038] It should be understood that the terms used herein are for the purpose of describing specific example embodiments only and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "comprise", "include", "contain" and "have" are inclusive and therefore specify the presence of stated features, steps, operations, elements and / or parts, but do not exclude the presence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring them to be performed in the specific order described or illustrated, unless the order of execution is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0039] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates otherwise, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0040] For ease of description, spatially relative terms may be used herein to describe the relationship of one element or feature relative to another element or feature as shown in the figures, such as "inside," "outside," "inside," "outside," "below," "beneath," "above," and the like. Such spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is flipped, an element described as "below" or "below" another element or feature would then be oriented as "above" or "above" another element or feature. Thus, the example term "below" can include both above and below orientations. The device may be otherwise oriented (rotated 90 degrees or in other orientations) and the spatially relative descriptors used herein are interpreted accordingly.

[0041] like Figure 1 As shown, according to one embodiment of the present invention, a control method for parking regeneration is proposed. In terms of overall design, the control method includes:

[0042] According to the vehicle entering the parking regeneration state, the regeneration time of the parking regeneration entering the regeneration injection stage is obtained;

[0043] Obtain the regeneration temperature upstream of the particulate filter;

[0044] When the regeneration time reaches the first preset time, determining whether the regeneration temperature is lower than the first preset temperature;

[0045] According to the regeneration temperature being lower than the first preset temperature, the vehicle is controlled to continue the parking regeneration, and the parking regeneration is terminated when the regeneration time reaches a second preset time.

[0046] Specifically, when the vehicle rolls off the assembly line, the operator triggers the one-touch regeneration function by pressing the vehicle's parking regeneration switch button, allowing the vehicle to undergo parking regeneration verification. In this embodiment, the vehicle sequentially proceeds through four stages: heating 1, heating 2, regeneration injection, and exhaust cooling. When the vehicle enters the regeneration injection stage, the electronic control unit begins counting, thereby determining the regeneration time d0 and simultaneously acquiring the regeneration temperature t upstream of the particulate filter in real time. When the regeneration time d0 reaches a first preset time d1, the electronic control unit determines whether the regeneration temperature t is below a first preset temperature T1. If the regeneration temperature t is below the first preset temperature T1, the electronic control unit controls the vehicle to terminate parking regeneration when the regeneration time d0 reaches a second preset time.

[0047] The parked regeneration control method of the present invention determines whether a vehicle can perform normal parked regeneration by setting judgment conditions such as a first preset temperature t1. If the vehicle cannot complete normal parked regeneration, the vehicle is controlled to exit parked regeneration at a second preset time. This helps ensure consistent parked regeneration time and avoids wasted vehicle offline time. This not only solves the problem of varying parked regeneration times when verifying parked regeneration using the existing one-touch regeneration function, but also effectively detects defective vehicles to facilitate targeted repairs.

[0048] In some embodiments of the present invention, the minimum value of the first preset temperature is set to a detection temperature that is 40° C. lower than the regeneration operating temperature.

[0049] Specifically, the particulate filter temperature is typically 280°C during the second heating phase. Once the vehicle enters the regeneration injection phase, the engine exhaust temperature must be raised to ensure proper combustion of carbon deposits in the particulate filter, bringing the particulate filter temperature to the regeneration operating temperature. Due to varying requirements for different engine models, the regeneration operating temperature varies based on engine bench verification. For example, the regeneration operating temperature for EGR models is 590°C, while for SCR models it is 520°C.

[0050] Taking into account the particulate filter's heating time and detection and judgment time, the minimum value of the first preset temperature is set to a detection temperature 40°C lower than the regeneration operating temperature. In this case, the first preset time d1 is the time it takes for the particulate filter to rise from 280°C to the detection temperature during normal parking regeneration operation. EGR models typically reach the first preset temperature T1 in 3 minutes, while SCR models typically reach the first preset temperature T1 in 4 minutes. This setting not only determines whether the vehicle's temperature rise is normal during the regeneration injection phase, but also effectively shortens the time it takes to detect substandard products.

[0051] In some embodiments of the present invention, further comprising:

[0052] When the regeneration time reaches the first preset time, determining whether the regeneration temperature is higher than the second preset temperature;

[0053] According to the regeneration temperature being higher than the second preset temperature, the vehicle is controlled to end the parking regeneration.

[0054] In this embodiment, the maximum value of the second preset temperature is a limit temperature at least 10°C lower than the regeneration operating temperature. If the temperature upstream of the particulate filter reaches or exceeds the limit temperature during the first preset time, it indicates that the particulate filter is heating up too quickly and has exceeded the regeneration operating temperature. The purpose of setting the second preset temperature in this invention is not only to detect defective products before the vehicle is off the assembly line, but also to better protect vehicle components, facilitating repair and replacement and minimizing component damage.

[0055] In some embodiments of the present invention, further comprising:

[0056] According to the regeneration temperature being not lower than the first preset temperature and not higher than the second preset temperature, the vehicle is controlled to continue the parking regeneration until completion.

[0057] Specifically, the parked regeneration control method includes a safety threshold, designated as [T1, T2]. When the regeneration time reaches a first predetermined time and the regeneration temperature is within the safety threshold, the vehicle can regenerate normally during parked regeneration, indicating that the parked regeneration function is functioning properly. This embodiment provides a safety threshold to ensure that the vehicle can continue to regenerate normally despite external environmental or other factors, thereby confirming that the vehicle's parked regeneration performance is normal.

[0058] In some embodiments of the present invention, controlling the vehicle to continue parked regeneration until completion includes controlling the vehicle to exit parked regeneration when the carbon loading in the particulate filter falls below a preset threshold. In this embodiment, the preset threshold is set to 0.2 g / L. When the regeneration time reaches a first preset time and the regeneration temperature is within a safety threshold, the vehicle is controlled to continue parked regeneration while simultaneously monitoring the carbon loading in the particulate filter. When the vehicle regenerates normally and the carbon loading falls below 0.2 g / L, the vehicle is controlled to exit parked regeneration.

[0059] In some embodiments of the present invention, controlling the vehicle to continue parking regeneration until completion further includes:

[0060] The vehicle is controlled to exit parking regeneration based on the maximum operating time from the regeneration time to the regeneration injection phase.

[0061] During the parked regeneration verification, other factors, such as insufficient or uneven regeneration temperature, can cause the vehicle's carbon load to reach below 0.2g / L for a longer period of time. To ensure consistency in the parked regeneration verification time, a time limit is set. The vehicle exits parked regeneration when the time limit is reached, thus preventing the vehicle from remaining in the regeneration injection phase for extended periods. In this embodiment, the time limit is set to the maximum operating time of the vehicle in the regeneration injection phase, which is set to 25 minutes.

[0062] In some embodiments of the present invention, after the vehicle ends parking regeneration when the regeneration time reaches a second preset time, the method further includes controlling the vehicle to display abnormal parking regeneration.

[0063] Specifically, when the regeneration time reaches a first preset time, and the regeneration temperature is lower than the first preset temperature or higher than a second preset temperature, the vehicle will terminate parked regeneration when the regeneration time reaches the second preset time. Simultaneously, the vehicle will be controlled to indicate abnormal parked regeneration. If the vehicle exits parked regeneration due to the regeneration temperature being lower than the first preset temperature, the vehicle will be displayed as first abnormal parked regeneration. If the vehicle exits parked regeneration due to the regeneration temperature being higher than the second preset temperature, the vehicle will be displayed as second abnormal parked regeneration. This configuration helps the operator identify the cause of the vehicle's abnormal parked regeneration, allowing the operator to take targeted action. In this embodiment, the vehicle can display parked regeneration by using different colored warning lights or by uploading the entire vehicle's parked regeneration processing information to a server for subsequent tracking and verification.

[0064] A second aspect of the present invention further provides a control device for parking regeneration, the control device being configured to execute the above-mentioned parking regeneration control method, the control device comprising:

[0065] an acquisition unit, for acquiring, when the vehicle is in a parking regeneration mode, a regeneration time when the parking regeneration enters a regeneration injection phase, and a regeneration temperature upstream of the particulate filter;

[0066] a determining unit, configured to determine whether the regeneration temperature satisfies a first preset condition when the regeneration time reaches a first preset time;

[0067] Control unit, used to control the vehicle to exit or enter parking regeneration mode.

[0068] In this embodiment, the acquisition unit includes at least a particulate trap upstream exhaust temperature sensor, a first timer and a second timer. At the same time, the first preset time d1, the limit preset time d 设 , the maximum operating time d of the regeneration injection phase max , the first preset temperature T1 and the second preset temperature T2. The second preset time is the first preset time d1 and the limit preset time d 设 The second preset time is set with reference to the parking regeneration time in the bench verification. Since the whole vehicle is affected by the ambient temperature, the whole vehicle pipeline layout and the post-processing form, the second preset time is usually 5 minutes higher than the bench verification time. In this embodiment, the second preset time is set to 25 minutes.

[0069] Specifically, the control logic of the control device is as follows: the operator presses the particulate filter regeneration switch and holds it for a specified period, activating the one-touch regeneration function. The control unit then controls the vehicle to enter the parked regeneration state. The vehicle then passes through heating stages 1 and 2, before entering the regeneration injection phase. At this point, the first timer is activated to measure the regeneration time d0. Simultaneously, the regeneration temperature t upstream of the particulate filter is measured using the exhaust temperature sensor upstream of the particulate filter.

[0070] When d0=d1, the determination unit determines whether T1≤t≤T2 is satisfied;

[0071] If the above conditions are met, the parking regeneration will continue, and then when the carbon load is about to reach 0.2g / L, or the regeneration time d0=d max When , the control unit controls the vehicle to exit parking regeneration.

[0072] If the above conditions cannot be met, there are two situations: t<T1 or t>T2. Then, the determination unit judges whether t<T1 is met;

[0073] If t<T1, the second timer is activated and the limit time d2 is obtained, and then the second timer is activated when the limit time d2=d 设 When the control unit controls the vehicle to display the first abnormal regeneration and exits the parking regeneration.

[0074] If t>T2, the control unit directly controls the vehicle to display the second abnormal regeneration and exits the parking regeneration.

[0075] A third aspect of the present invention further provides a control device for parking regeneration, the control device comprising:

[0076] one or more processors;

[0077] a memory for storing one or more programs;

[0078] When the one or more programs are executed by the one or more processors, the one or more processors implement the above-mentioned parking regeneration control method.

[0079] The control device is implemented as a general-purpose computing device. Components of the control device may include, but are not limited to, one or more processors or processing units, a memory, and a bus connecting different components (including the memory and the processing unit).

[0080] Here, bus refers to one or more of several types of bus structures, including a memory bus or memory controller, a peripheral bus, an accelerated graphics port, a processor, or a local bus using any of a variety of bus structures.

[0081] The device typically includes a variety of computer-readable media. These media can be any available media that can be accessed by the device, including volatile and non-volatile media, removable and non-removable media.

[0082] The memory may include computer-readable media in the form of volatile memory, such as random access memory and / or cache memory. The device may further include other removable / non-removable, volatile / non-volatile computer storage media. The memory may include at least one program product having a set of program modules that are configured to perform the functions of various embodiments of the present invention. The program product may be stored in, for example, the memory, such program modules including but not limited to one or more application programs, other program modules, and program data, each of which or some combination may include an implementation of a network environment. The program modules generally perform the functions and / or methods of the embodiments described herein.

[0083] The control device may also communicate with one or more external devices (e.g., a keyboard, mouse, camera, etc., and a display), one or more devices that enable a user to interact with the device, and / or any device that enables the device to communicate with one or more other computing devices (e.g., a network card, a modem, etc.). Such communication may be performed via an input / output (I / O) interface. Furthermore, the device may also communicate with one or more networks (e.g., a local area network, a wide area network, and / or a public network, such as the Internet) via a network adapter. The network adapter communicates with other modules of the device via a bus. It should be understood that, although not shown in the figures, other hardware and / or software modules may be used in conjunction with the device, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, disk array devices, tape drives, and data backup storage devices.

[0084] The processor executes various functional applications and processes data by running programs stored in the memory.

[0085] A fourth aspect of the present invention further provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the above-mentioned parking regeneration control method.

[0086] The computer storage medium of the embodiment of the present invention can select any combination of one or more computer-readable media. The computer-readable medium can be a computer-readable signal medium or a computer-readable storage medium. The computer-readable storage medium can be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor device, device or component, or any combination of the above. More specific examples (non-exhaustive list) of computer-readable storage media include: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In this document, a computer-readable storage medium can be any tangible medium containing or storing a program, which can be used by an instruction execution device, device or device or used in combination with it.

[0087] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A control method for parking regeneration, characterized in that: include: When the vehicle enters the parking regeneration state through the one-touch regeneration function and enters the regeneration injection phase, the regeneration time of the parking regeneration entering the regeneration injection phase is obtained; Obtain the regeneration temperature upstream of the particulate filter; When the regeneration time reaches a first preset time, determining whether the regeneration temperature is lower than a first preset temperature; controlling the vehicle to continue parking regeneration according to the regeneration temperature being lower than the first preset temperature, and ending parking regeneration when the regeneration time reaches a second preset time; The minimum value of the first preset temperature is set to a detection temperature 40°C lower than the regeneration operating temperature; When the regeneration time reaches the first preset time, determining whether the regeneration temperature is higher than a second preset temperature; According to the regeneration temperature being higher than the second preset temperature, the vehicle is controlled to end the parking regeneration.

2. The parking regeneration control method according to claim 1, characterized in that: Also includes: According to the regeneration temperature being not lower than the first preset temperature and not higher than the second preset temperature, the vehicle is controlled to continue the parking regeneration until completion.

3. The parking regeneration control method according to claim 2, characterized in that: The controlling the vehicle to continue parking regeneration until completion includes: When the carbon load of the particulate trap is lower than a preset threshold, the vehicle is controlled to exit parking regeneration.

4. The parking regeneration control method according to claim 2, characterized in that: The controlling the vehicle to continue parking regeneration until completion further includes: The vehicle is controlled to exit parking regeneration according to the maximum operating time from the regeneration time to the regeneration injection phase.

5. The parking regeneration control method according to claim 2, characterized in that: After the vehicle ends parking regeneration when the regeneration time reaches the second preset time, the method further includes: The control vehicle is displayed as abnormal parking regeneration.

6. A control device for parking regeneration, characterized in that: The control device is used to execute the parking regeneration control method according to any one of claims 1 to 5, and the control device includes: an acquisition unit, for acquiring, when the vehicle is in a parking regeneration mode, a regeneration time when the parking regeneration enters a regeneration injection phase, and a regeneration temperature upstream of the particulate filter; a determining unit, configured to determine whether the regeneration temperature satisfies a first preset condition when the regeneration time reaches a first preset time; Control unit, used to control the vehicle to exit or enter parking regeneration mode.

7. A control device for parking regeneration, characterized in that: All control equipment includes: one or more processors; a memory for storing one or more programs; When the one or more programs are executed by the one or more processors, the one or more processors implement the control method for parking regeneration as described in any one of claims 1 to 5.

8. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the control method for parking regeneration as claimed in any one of claims 1 to 5 is implemented.

Images