A heating device control method, apparatus, equipment and storage medium

Abstract

This application discloses a heating device control method, apparatus, device, and storage medium. The heating device control method includes: acquiring engine speed, engine exhaust flow rate, and engine exhaust temperature; and controlling the heating device based on the engine speed, engine exhaust flow rate, and engine exhaust temperature. Using engine speed, engine exhaust flow rate, and engine exhaust temperature as control conditions for the heating device can effectively reduce the risk of overheating caused by operating at low exhaust flow rates, and can effectively reduce the probability of overheating damage to the heating device.

Description

Technical Field

[0001] This application relates to the field of vehicle after-treatment system technology, and in particular to a heating device control method, device, equipment and storage medium. Background Technology

[0002] With the increasing demands for carbon emission reduction and carbon neutrality, vehicle exhaust emission standards are becoming more stringent, placing higher demands on the processing capabilities of aftertreatment systems. To improve the aftertreatment system's ability to treat pollutants, adding a heating device has become one technical solution. Currently, most aftertreatment system heating devices are simply controlled to turn on when the vehicle is started and off when the vehicle is turned off. This control method often leads to overheating of the heating device, resulting in damage.

[0003] Therefore, reducing the probability of overheating damage to the heating devices installed in the vehicle's after-treatment system has become a pressing technical problem that needs to be solved in this field. Summary of the Invention

[0004] To address the aforementioned issues, this application provides a heating device control method, apparatus, equipment, and storage medium, which can reduce the probability of overheating damage to the heating device installed in the vehicle's after-treatment system.

[0005] The embodiments of this application disclose the following technical solutions:

[0006] In a first aspect, embodiments of this application provide a method for controlling a heating device, wherein the heating device is arranged between an engine and an oxidation catalyst, the method comprising:

[0007] Obtain engine speed, engine exhaust flow rate, and engine exhaust temperature;

[0008] The heating device is controlled based on the engine speed, engine exhaust flow rate, and engine exhaust temperature.

[0009] Optionally, controlling the heating device based on the engine speed, engine exhaust flow rate, and engine exhaust temperature includes:

[0010] When the engine speed is greater than or equal to the preset speed, the engine exhaust flow rate is greater than or equal to the preset exhaust flow rate, and the engine exhaust temperature is less than or equal to the preset exhaust temperature, the heating device is controlled to enter the working state.

[0011] Optionally, controlling the heating device based on the engine speed, engine exhaust flow rate, and engine exhaust temperature includes:

[0012] When the engine speed is less than the preset speed, the engine exhaust flow rate is less than the preset exhaust flow rate, or the engine exhaust temperature is greater than the preset exhaust temperature, the heating device is controlled to exit the working state.

[0013] Optionally, the method further includes:

[0014] Obtain the temperature of the heating device;

[0015] When the temperature of the heating device exceeds the preset temperature, the heating device is controlled to exit the working state.

[0016] Secondly, embodiments of this application provide a heating device control device, wherein the heating device is arranged between an engine and an oxidation catalyst, the device comprising:

[0017] The acquisition module is used to acquire engine speed, engine exhaust flow rate, and engine exhaust temperature.

[0018] The control module is used to control the heating device based on the engine speed, engine exhaust flow rate, and engine exhaust temperature.

[0019] Optionally, the control module is specifically used for:

[0020] When the engine speed is greater than or equal to the preset speed, the engine exhaust flow rate is greater than or equal to the preset exhaust flow rate, and the engine exhaust temperature is less than or equal to the preset exhaust temperature, the heating device is controlled to enter the working state.

[0021] Optionally, the control module is specifically used for:

[0022] When the engine speed is less than the preset speed, the engine exhaust flow rate is less than the preset exhaust flow rate, or the engine exhaust temperature is greater than the preset exhaust temperature, the heating device is controlled to exit the working state.

[0023] Optionally, the device further includes:

[0024] A heating device temperature acquisition unit is used to acquire the temperature of the heating device;

[0025] The heating device control unit is used to control the heating device to exit the working state when the temperature of the heating device is higher than the preset temperature.

[0026] Thirdly, embodiments of this application provide an electronic device, the device comprising:

[0027] Memory, used to store computer programs;

[0028] A processor is used to execute the computer program to implement the steps of the above-described heating device control method.

[0029] Fourthly, embodiments of this application provide a computer-readable storage medium storing a computer program, which, when executed by a processor, is used to implement the steps of the above-described heating device control method.

[0030] Compared with the prior art, this application has the following beneficial effects:

[0031] The heating device control method provided in this application controls the heating device based on engine speed, engine exhaust flow rate, and engine exhaust temperature. Using engine speed, engine exhaust flow rate, and engine exhaust temperature as control conditions for the heating device effectively reduces the risk of overheating caused by operating at low exhaust flow rates, thus significantly lowering the probability of overheating damage.

[0032] The heating device control device, equipment, and storage medium provided in this application can all implement the steps of the above-mentioned heating device control method, and therefore have the same beneficial effects as the above-mentioned heating device control method. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 This is a schematic flowchart of a heating device control method provided in an embodiment of this application;

[0035] Figure 2 This is a schematic diagram of another heating device control method provided in an embodiment of this application;

[0036] Figure 3 A post-processing system layout diagram provided in an embodiment of this application;

[0037] Figure 4 This is a schematic diagram of a heating device control device provided in an embodiment of this application;

[0038] Figure 5 This is a schematic diagram of an electronic device structure provided in an embodiment of this application. Detailed Implementation

[0039] As described above, the current control method for the heating device added to the aftertreatment system is simply to turn it on when the vehicle is started and turn it off when the vehicle is turned off. This can easily lead to the heating device added to the aftertreatment system overheating and thus damage to the heating device.

[0040] Through research, the inventors have developed a heating device control method, device, equipment, and storage medium that can effectively reduce the probability of overheating damage to the heating device.

[0041] 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 are within the scope of protection of the present application.

[0042] Method Implementation Examples

[0043] See Figure 1 The figure is a schematic flowchart of a heating device control method provided in an embodiment of this application, including the following steps:

[0044] S101, obtains engine speed, engine exhaust flow rate and engine exhaust temperature.

[0045] It should be noted that in this application, the heating device is arranged between the engine and the Diesel Oxidation Catalyst (DOC).

[0046] As an example, in the embodiments provided in this application, sensors can be used to acquire engine speed, engine exhaust flow rate, and engine exhaust temperature. Engine speed can be acquired by a sensor arranged in the engine section, engine exhaust flow rate can be acquired by a sensor arranged between the heating device and the engine, and engine exhaust temperature can be acquired by a sensor arranged between the heating device and the engine.

[0047] Currently, some vehicles acquire engine speed, engine exhaust flow rate, or engine exhaust temperature for display or other operations. Therefore, this step can also retrieve the stored data.

[0048] S102, the heating device is controlled based on the engine speed, engine exhaust flow rate and engine exhaust temperature.

[0049] In the embodiments provided in this application, the heating device is controlled based on the engine speed, engine exhaust flow rate and engine exhaust temperature obtained in step S101. For example, the heating device can be controlled to enter or exit the working state. When the heating device has different power levels or different power working states, the heating device can also be controlled to work at different power levels or in different power working states.

[0050] It should be noted that, in the embodiments provided in this application, the heating device can be controlled not only based on engine speed, engine exhaust flow rate, and engine exhaust temperature, but also by combining the heating device temperature, engine speed, engine exhaust flow rate, and engine exhaust temperature.

[0051] This application provides a heating device control method that acquires engine speed, engine exhaust flow rate, and engine exhaust temperature, and controls the heating device based on these parameters. Using engine speed, engine exhaust flow rate, and engine exhaust temperature as control conditions for the heating device effectively reduces the risk of overheating due to operating at low exhaust flow rates, thus significantly lowering the probability of overheating damage.

[0052] See Figure 2 The figure is a schematic flowchart of another heating device control method provided in an embodiment of this application, including the following steps:

[0053] When the engine starts, determine whether the engine speed is greater than or equal to the preset speed n0, whether the engine exhaust flow rate is greater than or equal to the preset exhaust flow rate Q0, and whether the exhaust temperature is less than or equal to the preset exhaust temperature T0.

[0054] When the engine speed is greater than or equal to the preset speed n0, the engine exhaust flow rate is greater than or equal to the preset exhaust flow rate Q0, and the engine exhaust temperature is less than or equal to the preset exhaust temperature T0, the heating device is controlled to enter the working state.

[0055] When the engine speed is less than the preset speed n0, the engine exhaust flow rate is less than the preset exhaust flow rate Q0, or the engine exhaust temperature is greater than the preset exhaust temperature T0, the heating device is controlled to exit the working state.

[0056] After the heating device enters the working state, it is determined whether the engine exhaust temperature is greater than the preset exhaust temperature T0, and whether the heating device temperature is greater than the protection temperature T1.

[0057] When the engine exhaust temperature exceeds the preset exhaust temperature T0, or when the heating device temperature exceeds the protection temperature T1, the heating device is controlled to exit the working state.

[0058] It should be noted that the temperature of the heating device can be obtained by placing sensors in the heating device.

[0059] It should be noted that the preset speed n0, preset exhaust flow rate Q0, preset exhaust temperature T0, and protection temperature T1 can be set through experiments. For example, the relationship curve between engine speed, engine exhaust flow rate, engine exhaust temperature, and heating device temperature can be determined through experiments, thereby setting the preset speed n0, preset exhaust flow rate Q0, and preset exhaust temperature T0. Alternatively, the protection temperature T1 can be set by testing the damage rate of the heating device under different temperatures and the same working time.

[0060] This application embodiment utilizes parameters such as engine speed, exhaust temperature, exhaust flow rate, and heating device temperature to establish a corresponding control strategy, which can avoid the risk of overheating of the heating device when operating at low exhaust flow rate; at the same time, by measuring the temperature of the heating device and setting a protection temperature, it can prevent the heating device from being damaged by overheating.

[0061] As an example, engine speed, engine exhaust flow rate, engine exhaust temperature, and heating device temperature can all be obtained using corresponding sensors. For specific sensor placement locations, please refer to [reference needed]. Figure 3 .

[0062] It should be noted that, in Figure 3 In this context, DOC stands for Diesel Oxidation Catalyst, which reduces hydrocarbon emissions by oxidizing unburned hydrocarbons in the exhaust gas into water and carbon dioxide. DPF stands for Diesel Particulate Filter, which is used to capture particulates in the exhaust gas. SCR stands for Selective Catalytic Reduction, which involves injecting urea solution into the exhaust pipe to hydrolyze it into ammonia. The ammonia then reduces nitrogen oxides in the exhaust gas to nitrogen. ASC stands for Ammonia Slip Catalyst, which primarily eliminates excess or escaped ammonia by oxidizing it into nitrogen and nitrogen oxides. Simultaneously, it catalyzes the reaction of nitrogen oxides and ammonia back into nitrogen.

[0063] exist Figure 3In this system, the heating device is positioned between the engine and the DOC. Sensors can be placed in the engine section to measure engine speed, in the heating device section to measure heating device temperature, and between the heating device and the engine to measure engine exhaust temperature and engine exhaust flow.

[0064] Another heating device control method provided in this application embodiment controls the heating device to enter the working state when the engine speed is greater than or equal to a preset speed, the engine exhaust flow rate is greater than or equal to a preset exhaust flow rate, and the engine exhaust temperature is less than or equal to a preset exhaust temperature; controls the heating device to exit the working state when the engine speed is less than the preset speed, the engine exhaust flow rate is less than the preset exhaust flow rate, or the engine exhaust temperature is greater than the preset exhaust temperature; and controls the heating device to exit the working state when the temperature of the heating device is higher than a preset temperature. By using engine speed, engine exhaust flow rate, and engine exhaust temperature as enabling conditions for the heating device, it is possible to avoid turning on the heating device when the exhaust flow is insufficient, which would prevent the heat generated by the heating device from being absorbed by the engine exhaust and thus cause overheating. Furthermore, by installing a temperature sensor on the heating device and setting a protection temperature, it is possible to control the heating device to exit the working state when it may overheat and be damaged, further reducing the probability of overheating damage.

[0065] Device Examples

[0066] See Figure 4 The figure is a schematic diagram of a heating device control device provided in an embodiment of this application, including: an acquisition module 401 and a control module 402.

[0067] The acquisition module 401 is used to acquire engine speed, engine exhaust flow rate and engine exhaust temperature.

[0068] The control module 402 is used to control the heating device based on the engine speed, engine exhaust flow rate and engine exhaust temperature.

[0069] Optionally, the control module 402 is specifically used for:

[0070] When the engine speed is greater than or equal to the preset speed, the engine exhaust flow rate is greater than or equal to the preset exhaust flow rate, and the engine exhaust temperature is less than or equal to the preset exhaust temperature, the heating device is controlled to enter the working state.

[0071] Optionally, the control module 402 is specifically used for:

[0072] When the engine speed is less than the preset speed, the engine exhaust flow rate is less than the preset exhaust flow rate, or the engine exhaust temperature is greater than the preset exhaust temperature, the heating device is controlled to exit the working state.

[0073] Optionally, the device further includes:

[0074] A heating device temperature acquisition unit is used to acquire the temperature of the heating device;

[0075] The heating device control unit is used to control the heating device to exit the working state when the temperature of the heating device is higher than the preset temperature.

[0076] This application provides a heating device control device that utilizes an acquisition module and a control module to acquire engine speed, engine exhaust flow rate, and engine exhaust temperature, and controls the heating device based on these parameters. Using engine speed, engine exhaust flow rate, and engine exhaust temperature as control conditions for the heating device effectively reduces the risk of overheating caused by operating at low exhaust flow rates, thus significantly lowering the probability of overheating damage.

[0077] Electronic device examples

[0078] See Figure 5 The figure is a schematic diagram of an electronic device structure provided in an embodiment of this application, including:

[0079] Memory 11 is used to store computer programs;

[0080] The processor 12 is used to implement the steps of the heating device control method described in any of the above method embodiments when executing the computer program.

[0081] In this embodiment, the device can be an in-vehicle computer, a PC (Personal Computer), or a terminal device such as a smartphone, tablet computer, handheld computer, or portable computer.

[0082] The device may include a memory 11, a processor 12, and a bus 13.

[0083] The memory 11 includes at least one type of readable storage medium, such as flash memory, hard disk, multimedia card, card-type memory (e.g., SD or DX memory), magnetic memory, magnetic disk, optical disk, etc. In some embodiments, the memory 11 can be an internal storage unit of the device, such as the hard disk of the device. In other embodiments, the memory 11 can also be an external storage device of the device, such as a plug-in hard disk, SmartMedia Card (SMC), Secure Digital (SD) card, Flash Card, etc. Furthermore, the memory 11 can include both internal and external storage units of the device. The memory 11 can be used not only to store application software and various types of data installed on the device, such as program code executing the heating device control method, but also to temporarily store data that has been output or will be output.

[0084] In some embodiments, processor 12 may be a central processing unit (CPU), controller, microcontroller, microprocessor or other data processing chip, used to run program code stored in memory 11 or process data, such as program code for executing a heating device control method.

[0085] This bus 13 can be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus, etc. This bus can be divided into address bus, data bus, control bus, etc. For ease of representation, Figure 5 The bus is represented by a single thick line, but this does not mean that there is only one bus or one type of bus.

[0086] Furthermore, the device may also include a network interface 14, which may optionally include a wired interface and / or a wireless interface (such as a Wi-Fi interface, a Bluetooth interface, etc.), typically used to establish communication connections between the device and other electronic devices.

[0087] Optionally, the device may further include a user interface 15, which may include a display, an input unit such as a keyboard, and optionally, a standard wired interface or a wireless interface. Optionally, in some embodiments, the display may be an LED display, a liquid crystal display, a touch-sensitive liquid crystal display, or an OLED (Organic Light-Emitting Diode) touchscreen, etc. The display may also be appropriately referred to as a screen or display unit, used to display information processed in the device and to display a visual user interface.

[0088] Figure 5 Only devices with components 11-15 are shown; those skilled in the art will understand that... Figure 5 The structure shown does not constitute a limitation on the device and may include fewer or more components than shown, or combine certain components, or have different component arrangements.

[0089] Readable storage medium embodiments

[0090] This application also provides a computer-readable storage medium storing a computer program, which, when executed by a processor, implements the steps of the heating device control method described in any of the above method embodiments.

[0091] It should be noted that the various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments. In particular, for the embodiments of apparatus, devices, and storage media, since they are basically similar to the method embodiments, the description is relatively simple, and the relevant parts can be referred to the description of the method embodiments. The apparatus, devices, and storage embodiments described above are merely illustrative. The modules described as separate components may or may not be physically separate, and the components indicated as modules may or may not be physical modules, that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of the solution in this embodiment according to actual needs. Those skilled in the art can understand and implement this without creative effort.

[0092] The above description is merely one specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A heating device control method characterized by, The heating device is disposed between the engine and the oxidizing catalyst, and the heating device is used to heat the engine exhaust before it enters the oxidizing catalyst. The method includes: Obtain engine speed, engine exhaust flow rate, and engine exhaust temperature; The heating device is controlled based on the engine speed, engine exhaust flow rate, and engine exhaust temperature. The control of the heating device based on the engine speed, engine exhaust flow rate, and engine exhaust temperature includes: When the engine speed is greater than or equal to the preset speed, the engine exhaust flow rate is greater than or equal to the preset exhaust flow rate, and the engine exhaust temperature is less than or equal to the preset exhaust temperature, the heating device is controlled to enter the working state. The control of the heating device based on the engine speed, engine exhaust flow rate, and engine exhaust temperature includes: When the engine speed is less than the preset speed, the engine exhaust flow rate is less than the preset exhaust flow rate, or the engine exhaust temperature is greater than the preset exhaust temperature, the heating device is controlled to exit the working state.

2. The method of claim 1, wherein, The method further includes: Obtain the temperature of the heating device; When the temperature of the heating device exceeds the preset temperature, the heating device is controlled to exit the working state.

3. A heating device control device characterized by comprising: The heating device is disposed between the engine and the oxidation catalyst, and is used to heat the engine exhaust before it enters the oxidation catalyst. The device includes: The acquisition module is used to acquire engine speed, engine exhaust flow rate, and engine exhaust temperature. The control module is used to control the heating device based on the engine speed, engine exhaust flow rate, and engine exhaust temperature. The control module is specifically used for: When the engine speed is greater than or equal to the preset speed, the engine exhaust flow rate is greater than or equal to the preset exhaust flow rate, and the engine exhaust temperature is less than or equal to the preset exhaust temperature, the heating device is controlled to enter the working state. The control module is specifically used for: When the engine speed is less than the preset speed, the engine exhaust flow rate is less than the preset exhaust flow rate, or the engine exhaust temperature is greater than the preset exhaust temperature, the heating device is controlled to exit the working state.

4. The apparatus of claim 3, wherein, The device further includes: A heating device temperature acquisition unit is used to acquire the temperature of the heating device; The heating device control unit is used to control the heating device to exit the working state when the temperature of the heating device is higher than the preset temperature.

5. An electronic device, comprising: The device includes: Memory, used to store computer programs; A processor for executing the computer program to implement the steps of the heating device control method as described in claim 1 or 2.

6. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program that, when executed by a processor, implements the steps of the heating device control method as described in claim 1 or 2.

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