Engine intake air heating control method and device, vehicle, readable storage medium

Abstract

The application provides an engine intake heating control method and device, a vehicle and a readable storage medium, and belongs to the technical field of vehicles, which is used for heating the gas at the engine intake end of the vehicle by controlling the electromagnetic valve in the target heating structure; the target heating structure comprises a heat exchanger; the heat exchanger is arranged at the engine intake end and is used for heating the gas at the engine intake end; the water inlet of the heat exchanger is connected with the engine warm air water outlet, and the water outlet of the heat exchanger is connected with the engine warm air water return outlet; the electromagnetic valve is arranged on the water inlet pipeline of the heat exchanger; the method comprises the following steps: acquiring the ambient temperature of the position where the vehicle is located and the cooling liquid temperature of the engine; when the ambient temperature is lower than a first preset temperature and the cooling liquid temperature is higher than a second preset temperature, the electromagnetic valve is controlled to be opened to heat the gas at the engine intake end. The application can effectively utilize the engine heat and ensure the normal operation of the engine.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of vehicles, and more particularly to an engine intake heating control method and device, a vehicle, and a readable storage medium. BACKGROUND

[0002] In order to meet the emission regulation requirements, an engine usually adopts a closed crankcase ventilation system. Under a large operating condition, crankcase exhaust gas is connected to the front part of the pressure end of a supercharger through a crank passage, and re-enters the cylinder of the engine to participate in combustion.

[0003] On this basis, the present inventors have found that, in a low-temperature condition, when the oil-gas mixture of crankcase blow-by gas flows from the crank passage into the engine intake pipeline, the moisture in the oil-gas mixture is prone to freeze at the intake end of the engine intake pipeline due to the low ambient temperature, thereby causing pipeline blockage. In this case, the crankcase pressure is prone to be too high, the seal is prone to fail, and the engine oil is prone to leak. In a severe case, the intake may be blocked and the pressure wheel of the supercharger may be damaged, thereby affecting the normal operation of the engine.

[0004] Therefore, the present application aims to provide a solution to the above problems. SUMMARY

[0005] The present application aims to provide an engine intake heating control method and device, a vehicle, and a readable storage medium to solve the problem that the existing technology is prone to cause pipeline blockage in a low-temperature condition and thereby affect the normal operation of the engine.

[0006] In a first aspect, the present application provides an engine intake heating control method for heating the gas at the intake end of an engine in a vehicle by controlling a solenoid valve in a target heating structure. The target heating structure includes a heat exchanger. The heat exchanger is arranged at the intake end of the engine for heating the gas at the intake end of the engine. The water inlet of the heat exchanger is connected to the water outlet of an engine heater, and the water outlet of the heat exchanger is connected to the water return of the engine heater. The solenoid valve is arranged on the water inlet pipeline of the heat exchanger. The engine intake heating control method includes:

[0007] obtaining the ambient temperature of the location where the vehicle is located and the coolant temperature of the engine;

[0008] when the ambient temperature is lower than a first preset temperature and the coolant temperature is higher than a second preset temperature, controlling the solenoid valve to be opened to heat the gas at the intake end of the engine.

[0009] In a possible implementation, after the solenoid valve is controlled to be opened, the engine intake heating control method further includes:

[0010] when the ambient temperature is not lower than a first preset temperature or the coolant temperature is not higher than a second preset temperature, controlling the electromagnetic valve to be closed to stop heating the gas at the intake end of the engine.

[0011] In a possible implementation, the controlling the electromagnetic valve to be opened to heat the gas at the intake end of the engine when the ambient temperature is lower than the first preset temperature and the coolant temperature is higher than the second preset temperature comprises:

[0012] obtaining a pressure difference on both sides of a target region in an intake pipeline of the engine, wherein the target region is a region in the intake pipeline of the engine that intersects with a crank pipeline of the engine;

[0013] when the pressure difference is greater than a preset pressure difference, the ambient temperature is lower than the first preset temperature, and the coolant temperature is higher than the second preset temperature, controlling the electromagnetic valve to be opened to heat the gas at the intake end of the engine.

[0014] In a possible implementation, before the obtaining the pressure difference on both sides of the target region in the intake pipeline of the engine, the controlling the electromagnetic valve to be opened to heat the gas at the intake end of the engine when the ambient temperature is lower than the first preset temperature and the coolant temperature is higher than the second preset temperature further comprises:

[0015] obtaining a running mileage of the vehicle after a current ignition;

[0016] The obtaining the pressure difference on both sides of the target region in the intake pipeline of the engine comprises:

[0017] obtaining the pressure difference on both sides of the target region in the intake pipeline of the engine when the running mileage is greater than a preset mileage.

[0018] In a possible implementation, the controlling the electromagnetic valve to be opened to heat the gas at the intake end of the engine when the ambient temperature is lower than the first preset temperature and the coolant temperature is higher than the second preset temperature comprises:

[0019] obtaining a running condition of the engine;

[0020] when the running condition indicates that the engine is running in a preset medium-low load condition, the ambient temperature is lower than the first preset temperature, and the coolant temperature is higher than the second preset temperature, controlling the electromagnetic valve to be opened to heat the gas at the intake end of the engine.

[0021] In a possible implementation, after the controlling the electromagnetic valve to be opened, the engine intake heating control method further comprises:

[0022] determine the opening of the electromagnetic valve according to the ambient temperature and a preset map;

[0023] The preset map includes a mapping relationship between the ambient temperature and the opening of the electromagnetic valve.

[0024] In a possible implementation, after the electromagnetic valve is controlled to open, the engine intake air heating control method further includes:

[0025] obtaining a water outlet temperature of the water outlet;

[0026] determining the opening of the electromagnetic valve according to the water outlet temperature.

[0027] A second aspect of the embodiment of the present application provides an engine intake air heating control device, which is used for heating the gas at an engine intake end in a vehicle by controlling an electromagnetic valve in a target heating structure; the target heating structure includes a heat exchanger; the heat exchanger is arranged at the engine intake end and is used for heating the gas at the engine intake end; a water inlet of the heat exchanger is connected to an engine warm air water outlet, and a water outlet of the heat exchanger is connected to an engine warm air water return; the electromagnetic valve is arranged on a water inlet pipeline of the heat exchanger; and the engine intake air heating control device includes:

[0028] a data acquisition module, configured to acquire an ambient temperature of a location where the vehicle is located and a coolant temperature of the engine;

[0029] a heating control module, configured to control the electromagnetic valve to open to heat the gas at the engine intake end when the ambient temperature is lower than a first preset temperature and the coolant temperature is higher than a second preset temperature.

[0030] A third aspect of the embodiment of the present application provides a vehicle, which includes a control terminal, the control terminal including a memory, a processor, and a computer program stored in the memory and executable on the processor, and the processor implements the steps of the engine intake air heating control method when executing the computer program.

[0031] A fourth aspect of the embodiment of the present application provides a computer readable storage medium, which stores a computer program, and the computer program implements the steps of the engine intake air heating control method when executed by a processor.

[0032] The engine intake air heating control method and device, the vehicle, and the computer readable storage medium provided by the embodiment of the present application have the following beneficial effects:

[0033] The embodiment of the present application firstly provides a heating structure which utilizes the heat of engine coolant to heat the gas at the intake end of the engine, and can realize effective utilization of the heat of the engine. On this basis, the embodiment of the present application acquires the ambient temperature and the coolant temperature of the engine, and controls the electromagnetic valve to be opened to heat the gas at the intake end of the engine when the ambient temperature is low and the coolant temperature of the engine is high. Wherein, opening the electromagnetic valve when the coolant temperature of the engine is high can ensure the effectiveness of the gas heating, and based on this, opening the electromagnetic valve when the ambient temperature is low can effectively avoid the problem of pipeline blockage under low temperature, so as to avoid the over-high crankcase pressure, sealing failure, oil leakage, avoid causing damage to the engine parts, and further ensure the normal operation of the engine. That is to say, the embodiment of the present application effectively solves the problems of the prior art through the specific heating structure and heating control method. BRIEF DESCRIPTION OF DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0035] Figure 1 The arrangement schematic diagram of the target heating structure provided by an embodiment of the present application;

[0036] Figure 2 The flowchart of the engine intake heating control method provided by an embodiment of the present application;

[0037] Figure 3 The arrangement schematic diagram of the target heating structure provided by another embodiment of the present application;

[0038] Figure 4 The control map of the pre-set opening and closing of the electromagnetic valve provided by an embodiment of the present application;

[0039] Figure 5 The control map of the pre-set opening of the electromagnetic valve provided by an embodiment of the present application;

[0040] Figure 6 The flowchart of the engine intake heating control method provided by another embodiment of the present application;

[0041] Figure 7 The structure block diagram of the engine intake heating control device provided by an embodiment of the present application;

[0042] Figure 8 The schematic block diagram of the control terminal provided by an embodiment of the present application. DETAILED DESCRIPTION

[0043] In the following description, for purposes of explanation and not limitation, specific details are set forth such as particular architectures, technologies, techniques, etc. in order to provide a thorough understanding of the embodiments of the present application. However, it will be apparent to those skilled in the art that the present application can be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.

[0044] In order to make the objects, technical solutions and advantages of the present application clearer, the following will be described by specific embodiments in conjunction with the accompanying drawings.

[0045] The engine intake air heating control method provided by the embodiments of the present application is used for heating the gas at the engine intake end in a vehicle by controlling the electromagnetic valve in the target heating structure. The arrangement diagram of the target heating structure can refer to Figure 1 , Figure 1 The pipeline where the hollow filter is located (i.e. the pipeline where the air filter is located, or the intake pipeline of the engine), the exhaust pipeline, and the intake port of the pressure end of the supercharger are connected through a three-way pipe. On this basis, the heat exchanger of the target heating structure is arranged at the interface of the engine exhaust three-way pipeline, i.e. the engine intake end, and is used for heating the gas at the engine intake end. As shown in Figure 1 , the water inlet of the heat exchanger can be connected to the engine warm air outlet, and the water outlet of the heat exchanger can be connected to the engine warm air return port, so as to utilize the heat of the engine. The electromagnetic valve is arranged on the water inlet pipeline of the heat exchanger, and is used for controlling the water flow through the heat exchanger, thereby controlling the heating of the gas at the engine intake end.

[0046] In the target heating structure, other commonly used devices can also be arranged, which are not limited in the embodiments. For example, Figure 1 A one-way valve can also be arranged on the water outlet pipeline of the heat exchanger to prevent backflow, and a water temperature sensor can also be arranged to detect the outlet water temperature of the heat exchanger so as to facilitate subsequent control.

[0047] In specific applications, the pipeline length and pipeline diameter of the heat exchanger can be determined according to the type of the engine cooling system, the amount of coolant, the oil capacity, etc.

[0048] Based on the above structure, please refer to Figure 2 , Figure 2 The flowchart of the engine intake air heating control method provided by an embodiment of the present application is shown in the figure, and the engine intake air heating control method comprises the following steps.

[0049] S101: Obtain the ambient temperature of the position where the vehicle is located and the coolant temperature of the engine.

[0050] S102: When the ambient temperature is lower than the first preset temperature and the coolant temperature is higher than the second preset temperature, the electromagnetic valve is controlled to be opened to heat the gas at the engine intake end.

[0051] In the embodiment, when the coolant temperature is higher than the second preset temperature, it indicates that the heat of the engine is sufficient to be utilized by the heat exchanger to heat the gas at the engine intake end. If the ambient temperature is also lower than the first preset temperature at this time, the electromagnetic valve can be controlled to be opened, and at this time, hot water flows through the heat exchanger to heat the gas flowing through the bypass passage to prevent icing. The first preset temperature can be 0°C, and the second preset temperature can be 85°C. The first preset temperature and the second preset temperature can be set according to the engine performance, the bypass gas amount, and other parameters, which are not limited in the embodiment.

[0052] In the embodiment, the running duration of the engine after the current ignition can also be obtained, and whether the electromagnetic valve is controlled to be opened is determined based on the ambient temperature and the running duration. For example, the electromagnetic valve can be controlled to be opened to heat the gas at the engine intake end when the ambient temperature is lower than the first preset temperature and the running duration reaches a preset duration. When the running duration of the engine reaches the preset duration, the coolant temperature of the engine also reaches a certain temperature at this time, which is sufficient to be utilized by the heat exchanger to heat the gas at the engine intake end. Therefore, when the running duration reaches the preset duration, if the ambient temperature is also lower than the first preset temperature, the electromagnetic valve can be controlled to be opened to heat the gas at the engine intake end. The preset duration can also be determined according to actual needs, which is not limited in the embodiment.

[0053] As can be seen from the above description, the embodiment of the present application first provides a heating structure, which utilizes the heat of the engine coolant to heat the gas at the engine intake end, and can realize effective utilization of the heat of the engine. On this basis, the embodiment of the present application obtains the ambient temperature and the coolant temperature of the engine, and controls the electromagnetic valve to be opened to heat the gas at the engine intake end when the ambient temperature is low and the coolant temperature of the engine is high. When the coolant temperature of the engine is high, opening the electromagnetic valve can ensure the effectiveness of gas heating. Based on this, opening the electromagnetic valve when the ambient temperature is low can effectively avoid the problem of pipeline blockage under low temperature conditions, thereby avoiding excessive crankcase pressure, sealing failure, oil leakage, avoiding damage to engine parts, and ensuring normal operation of the engine. That is, the embodiment of the present application effectively solves the problems of the prior art through a specific heating structure and a heating control method.

[0054] In a possible implementation manner, after the electromagnetic valve is controlled to be opened, the engine intake heating control method further includes:

[0055] When the ambient temperature is not lower than the first preset temperature or the coolant temperature is not higher than the second preset temperature, the control solenoid valve is closed to stop heating the gas at the engine intake.

[0056] In this embodiment, if the ambient temperature rises to or above the first preset temperature after the solenoid valve is opened, it indicates that the probability of the gas at the engine intake end freezing is greatly reduced. Therefore, the solenoid valve can be controlled to close. After the solenoid valve is closed, the heat exchanger is in an open circuit state, and there is no hot water flowing inside. The heat exchanger stops heating the gas at the engine intake end, thereby achieving energy saving.

[0057] In this embodiment, if the engine coolant temperature drops to or below the second preset temperature after the solenoid valve is opened, it indicates that the heat of the engine cannot be effectively utilized by the heat exchanger. Therefore, the solenoid valve can be controlled to close. After the solenoid valve is closed, the heat exchanger is in an open circuit state, and there is no hot water flowing inside. The heat exchanger stops heating the gas at the engine intake end, thereby achieving energy saving.

[0058] In one possible implementation, when the ambient temperature is lower than a first preset temperature and the coolant temperature is higher than a second preset temperature, controlling the solenoid valve to open to heat the air at the engine intake includes:

[0059] Obtain the pressure difference across a target area in the engine's intake manifold. The target area is the region in the engine's intake manifold that intersects with the engine's tortuous pipes.

[0060] When the pressure difference is greater than the preset pressure difference, the ambient temperature is lower than the first preset temperature, and the coolant temperature is higher than the second preset temperature, the solenoid valve is opened to heat the gas at the engine intake.

[0061] In this embodiment, a differential pressure sensor can also be provided to detect the pressure difference across a target area in the engine intake manifold, such as... Figure 3 As shown, the differential pressure sensor can measure the upstream and downstream pressures (i.e., the pressures on both sides of the target area) P1 and P2 at the intersection of the intake pipe and the curved pipe, and calculate the pressure difference ΔP (ΔP = P1 - P2). Based on this, when the pressure difference is greater than the preset pressure difference, it indicates that there is a risk of icing and blockage in the intake pipe. At this time, if the ambient temperature is lower than the first preset temperature and the coolant temperature is higher than the second preset temperature, the solenoid valve is opened to heat the gas at the engine intake end, thereby preventing the pipe from icing.

[0062] In this embodiment, the preset pressure difference can be 0.3 kPa, and its specific value can be set according to actual needs. This embodiment does not impose any restrictions.

[0063] Among them, such as Figure 3As shown, the execution subject of the engine intake air heating control method described in the present application can be an ECU (Electronic Control Unit) of a vehicle, the ECU can acquire the ambient temperature and the engine coolant temperature, and generate a control signal according to the ambient temperature and the engine coolant temperature to control the opening / closing of the electromagnetic valve, thereby realizing the heating control of the engine intake air.

[0064] In a possible implementation, before acquiring the pressure difference on both sides of the target region in the intake pipeline of the engine, when the ambient temperature is lower than a first preset temperature and the coolant temperature is higher than a second preset temperature, the electromagnetic valve is controlled to be opened to heat the gas at the engine intake end, and the method further includes:

[0065] Acquiring the running mileage of the vehicle after the current ignition.

[0066] Acquiring the pressure difference on both sides of the target region in the intake pipeline of the engine, including:

[0067] Acquiring the pressure difference on both sides of the target region in the intake pipeline of the engine when the running mileage is greater than a preset mileage.

[0068] In the embodiment, the inventor finds that the icing of the intake pipeline is related to the running mileage, when the running mileage is greater than a certain value, the probability of the icing of the intake pipeline greatly increases, therefore, the running mileage of the vehicle is also acquired as a criterion in the embodiment. In the embodiment, the pressure difference can be acquired when the running mileage is greater than a preset mileage, so as to reduce the data processing amount as much as possible while effectively preventing the icing of the intake pipeline, and further reduce the control cost.

[0069] In the embodiment, the preset mileage can be 150 km, and the specific value of the preset mileage can be calibrated according to the characteristics of the engine and the vehicle itself, which is not limited in the embodiment.

[0070] In a possible implementation, when the ambient temperature is lower than a first preset temperature and the coolant temperature is higher than a second preset temperature, the electromagnetic valve is controlled to be opened to heat the gas at the engine intake end, including:

[0071] Acquiring the running condition of the engine.

[0072] When the running condition shows that the engine runs in a pre-set medium-low load condition, the ambient temperature is lower than a first preset temperature, and the coolant temperature is higher than a second preset temperature, the electromagnetic valve is controlled to be opened to heat the gas at the engine intake end.

[0073] In the embodiment, the control map of the electromagnetic valve can be preset in different operating conditions. The control map can include the mapping relationship between the engine operating condition and the opening state of the electromagnetic valve. In the control map, the electromagnetic valve is opened in the low load condition, and the electromagnetic valve is not opened in the high load condition. Figure 4 Figure 4 A control map of the opening and closing of the electromagnetic valve is given, where BMEP represents the average effective pressure, rpm represents the speed, 1 represents that the electromagnetic valve is not opened, and 2 represents that the electromagnetic valve is opened. On this basis, after the operating condition of the engine is obtained, when the ambient temperature is lower than the first preset temperature and the coolant temperature is higher than the second preset temperature, whether the electromagnetic valve is opened or not can be determined according to the control map.

[0074] In the embodiment, considering that the gas in the port-to-exhaust pipe flows into the intake pipe at a low speed in the low load condition of the engine, the gas is prone to icing and accumulation, and therefore, as shown in Figure 3 , the engine operating condition is also used as a criterion for determining whether the electromagnetic valve is opened or not, so as to more accurately determine whether the intake of the engine is heated or not, and to avoid unnecessary energy consumption. Correspondingly, in the high load condition of the engine, the speed of the gas in the port-to-exhaust pipe flowing into the intake pipe is high, and the temperature of the gas is relatively high. At this time, even if there is a small amount of icing, the icing is also prone to being blown away by the gas flow, and is not prone to condensation at the intake end of the engine. Therefore, at this time, the gas at the intake end of the engine can not be heated, so as to achieve energy saving.

[0075] In a possible implementation, after the electromagnetic valve is controlled to be opened, the engine intake heating control method further includes:

[0076] The opening degree of the electromagnetic valve is determined according to the ambient temperature and the preset map.

[0077] The preset map includes the mapping relationship between the ambient temperature and the opening degree of the electromagnetic valve.

[0078] In the embodiment, the electromagnetic valve can be a proportional electromagnetic valve, and on this basis, the opening degree of the electromagnetic valve can be determined.

[0079] In the embodiment, the mapping relationship between the ambient temperature and the opening degree of the electromagnetic valve can be calibrated in advance to obtain the preset map. The real-time opening degree of the electromagnetic valve is determined based on the preset map. In the preset map, the opening degree of the electromagnetic valve is negatively correlated with the ambient temperature, that is, the lower the ambient temperature, the greater the opening degree of the electromagnetic valve. For a specific example of the preset map, reference can be made to Figure 5 .

[0080] In a possible implementation, after the electromagnetic valve is controlled to be opened, the engine intake heating control method further includes: ​

[0081] obtaining the outlet water temperature of the outlet.

[0082] determining the opening of the electromagnetic valve according to the outlet water temperature.

[0083] In the embodiment, the electromagnetic valve can be a proportional electromagnetic valve, and the opening of the electromagnetic valve can be determined based on the outlet water temperature and a preset PID control strategy.

[0084] In the embodiment, as shown in Figure 1 and Figure 3 , a water temperature sensor can be arranged on the outlet pipeline of the heat exchanger to measure the outlet water temperature of the outlet of the heat exchanger, and the opening of the electromagnetic valve can be determined based on the outlet water temperature and a preset PID control strategy.

[0085] In a possible implementation, the engine intake air heating control method provided by the embodiment of the present application can further include Figure 6 , as shown, Figure 6 , a series of parameters can be determined after the engine is started to determine whether to open the electromagnetic valve, and the opening of the electromagnetic valve can be determined according to the ambient temperature or the outlet water temperature after the electromagnetic valve is opened, and the opening of the electromagnetic valve is controlled. On this basis, the gas at the engine intake end is heated until the aforementioned series of parameters do not meet the corresponding intake air heating conditions, at which time the electromagnetic valve can be closed and the heating process can be stopped. Based on the method of the embodiment, the crankcase ventilation pipeline and the intake pipeline can be heated at the joint to prevent icing under low ambient temperature conditions, the electromagnetic valve can be closed under high ambient temperature conditions, the engine load can be reduced, and energy saving and emission reduction can be further achieved, thereby effectively solving the problems of the prior art.

[0086] Corresponding to the engine intake air heating control method of the above embodiment, Figure 7 is a structural block diagram of an engine intake air heating control device provided by an embodiment of the present application. For ease of illustration, only parts related to the embodiment of the present application are shown. The engine intake air heating control device provided by the embodiment of the present application is used to heat the gas at the engine intake end in a vehicle by controlling the electromagnetic valve in a target heating structure. The target heating structure includes a heat exchanger. The heat exchanger is arranged at the engine intake end and is used to heat the gas at the engine intake end. The water inlet of the heat exchanger is connected to the engine warm air outlet, and the water outlet of the heat exchanger is connected to the engine warm air return. The electromagnetic valve is arranged on the water inlet pipeline of the heat exchanger. Referring to Figure 7 , the engine intake air heating control device 20 includes a data acquisition module 21 and a heating control module 22.

[0087] The data acquisition module 21 is configured to acquire the ambient temperature of a location where the vehicle is located and the coolant temperature of the engine.

[0088] The heating control module 22 is configured to control the electromagnetic valve to open to heat the gas at the intake end of the engine when the ambient temperature is lower than a first preset temperature and the coolant temperature is higher than a second preset temperature.

[0089] In a possible implementation, after the electromagnetic valve is controlled to open, the heating control module 22 is further configured to:

[0090] control the electromagnetic valve to close to stop heating the gas at the intake end of the engine when the ambient temperature is not lower than the first preset temperature or the coolant temperature is not higher than the second preset temperature.

[0091] In a possible implementation, the data acquisition module 21 is further configured to acquire a pressure difference on both sides of a target region in an intake pipeline of the engine.

[0092] The heating control module 22 is specifically configured to control the electromagnetic valve to open to heat the gas at the intake end of the engine when the pressure difference is greater than a preset pressure difference, the ambient temperature is lower than the first preset temperature, and the coolant temperature is higher than the second preset temperature.

[0093] In a possible implementation, before acquiring the pressure difference on both sides of the target region in the intake pipeline of the engine, the data acquisition module 21 is further configured to acquire a running mileage of the vehicle after the current ignition.

[0094] The data acquisition module 21 is specifically configured to acquire the pressure difference on both sides of the target region in the intake pipeline of the engine when the running mileage is greater than a preset mileage.

[0095] In a possible implementation, the data acquisition module 21 is further configured to acquire an operating condition of the engine.

[0096] The heating control module 22 is specifically configured to control the electromagnetic valve to open to heat the gas at the intake end of the engine when the operating condition indicates that the engine is operating in a preset medium-low load condition, the ambient temperature is lower than the first preset temperature, and the coolant temperature is higher than the second preset temperature.

[0097] In a possible implementation, after the electromagnetic valve is controlled to open, the heating control module 22 is further configured to determine the opening degree of the electromagnetic valve according to the ambient temperature and a preset map.

[0098] The preset map includes a mapping relationship between the ambient temperature and the opening degree of the electromagnetic valve.

[0099] In a possible implementation, after the electromagnetic valve is controlled to open, the data acquisition module 21 is further configured to acquire a water outlet temperature of the water outlet.

[0100] The heating control module 22 is further configured to determine the opening degree of the electromagnetic valve according to the water outlet temperature.

[0101] This invention also provides a vehicle, which includes a control terminal, see below. Figure 8 , Figure 8 This is a schematic block diagram of a control terminal provided in an embodiment of the present invention. Figure 8 The terminal 300 in this embodiment may include one or more processors 301, one or more input devices 302, one or more output devices 303, and one or more memories 304. The processors 301, input devices 302, output devices 303, and memories 304 communicate with each other via a communication bus 305. The memories 304 store computer programs, including program instructions. The processors 301 execute the program instructions stored in the memories 304. Specifically, the processors 301 are configured to invoke the program instructions to perform the functions of the modules / units in the above-described device embodiments, such as... Figure 7 The functions of modules 21 and 22 shown.

[0102] It should be understood that, in this embodiment of the invention, the processor 301 may be a Central Processing Unit (CPU), but it may also be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or any conventional processor.

[0103] Input device 302 may include a touchpad, a fingerprint sensor (for collecting the user's fingerprint information and fingerprint orientation information), a microphone, etc., and output device 303 may include a display (LCD, etc.), a speaker, etc.

[0104] The memory 304 may include read-only memory and random access memory, and provides instructions and data to the processor 301. A portion of the memory 304 may also include non-volatile random access memory. For example, the memory 304 may also store device type information.

[0105] In a specific implementation, the processor 301, the input device 302, and the output device 303 described in the embodiments of the present application can execute the implementation manners described in the first and second embodiments of the engine intake air heating control method provided by the embodiments of the present application, and can also execute the implementation manners of the terminal described in the embodiments of the present application, which will not be described here.

[0106] In another embodiment of the present application, a computer readable storage medium is provided, which stores a computer program. The computer program includes program instructions, which are executed by a processor to implement all or part of the processes of the above-mentioned embodiments. The computer program can also be used to instruct related hardware to complete the processes. The computer program can be stored in a computer readable storage medium. When the computer program is executed by the processor, the steps of the above-mentioned embodiments can be implemented. The computer program includes computer program code, which can be in the form of source code, object code, executable file, or some intermediate form. The computer readable medium can include any entity or device capable of carrying the computer program code, recording medium, U disk, mobile hard disk, magnetic disk, optical disk, computer memory, read-only memory (ROM), random access memory (RAM), electrical carrier signal, telecommunication signal, and software distribution medium, etc. It should be noted that the computer readable medium can include or exclude some contents according to the requirements of legislation and patent practice in different jurisdictions. For example, according to the legislation and patent practice in some jurisdictions, the computer readable medium does not include electrical carrier signals and telecommunication signals.

[0107] The computer readable storage medium can be an internal storage unit of the terminal, such as a hard disk or a memory of the terminal. The computer readable storage medium can also be an external storage device of the terminal, such as a plug-in hard disk, a smart media card (SMC), a secure digital (SD) card, a flash card, etc. Further, the computer readable storage medium can include both the internal storage unit and the external storage device. The computer readable storage medium is used to store the computer program and other programs and data required by the terminal. The computer readable storage medium can also be used to temporarily store data that has been output or will be output.

[0108] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the terminal and the unit described above can refer to the corresponding process in the foregoing method embodiment, and will not be repeated here.

[0109] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the terminal and the unit described above can refer to the corresponding process in the foregoing method embodiment, and will not be repeated here.

[0110] In several embodiments provided in the present application, it should be understood that the disclosed terminal and method can be implemented in other ways. For example, the above-described device embodiments are only schematic, for example, the division of units is only a logical function division, and actual implementation can have another division manner, for example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the units shown or discussed can be indirect coupling or communication connection through some interface or unit, and can also be electrical, mechanical or other forms of connection.

[0111] The units described as separate components can or can not be physically separate, and the components shown as units can or can not be physical units, that is, they can be located in one place, or can be distributed on a plurality of network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the embodiment of the present application.

[0112] In addition, each functional unit in each embodiment of the present application can be integrated in one processing unit, or each unit can exist physically, or two or more units can be integrated in one unit. The integrated unit can be realized in the form of hardware or in the form of software functional unit.

[0113] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited to this. Any skilled person in the art can easily think of various equivalent modifications or replacements within the technical range disclosed in the present application, and these modifications or replacements should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A method for controlling engine intake air heating, characterized in that, The engine intake air heating control method is used to heat the gas at the engine intake end of the vehicle by controlling the solenoid valve in the target heating structure; the target heating structure includes a heat exchanger; the heat exchanger is disposed at the engine intake end and is used to heat the gas at the engine intake end; the inlet of the heat exchanger is connected to the engine heater outlet, and the outlet of the heat exchanger is connected to the engine heater return outlet. The solenoid valve is installed on the water inlet pipe of the heat exchanger; The engine intake air heating control method includes: The ambient temperature at the location of the vehicle and the coolant temperature of the engine are obtained. When the ambient temperature is lower than the first preset temperature and the coolant temperature is higher than the second preset temperature, the solenoid valve is controlled to open to heat the gas at the intake end of the engine. The step of controlling the solenoid valve to open to heat the gas at the engine intake end when the ambient temperature is lower than a first preset temperature and the coolant temperature is higher than a second preset temperature includes: Obtain the pressure difference between two sides of a target area in the engine's intake manifold; wherein, the target area is the region in the engine's intake manifold that intersects with the engine's tortuous pipe; When the pressure difference is greater than the preset pressure difference, the ambient temperature is lower than the first preset temperature, and the coolant temperature is higher than the second preset temperature, the solenoid valve is controlled to open to heat the gas at the engine intake end. Before acquiring the pressure difference across the target area in the engine's intake manifold, the step of controlling the solenoid valve to open to heat the gas at the engine's intake end when the ambient temperature is lower than a first preset temperature and the coolant temperature is higher than a second preset temperature further includes: Obtain the mileage of the vehicle after this ignition; The step of obtaining the pressure difference across the target area in the engine's intake manifold includes: When the operating mileage is greater than the preset mileage, the pressure difference between the two sides of the target area in the intake pipe of the engine is obtained.

2. The engine intake air heating control method as described in claim 1, characterized in that, After the solenoid valve is opened, the engine intake air heating control method further includes: When the ambient temperature is not lower than the first preset temperature or the coolant temperature is not higher than the second preset temperature, the solenoid valve is controlled to close to stop heating the gas at the engine intake.

3. The engine intake air heating control method as described in claim 1, characterized in that, The step of controlling the solenoid valve to open to heat the gas at the engine intake end when the ambient temperature is lower than a first preset temperature and the coolant temperature is higher than a second preset temperature includes: Obtain the operating conditions of the engine; When the operating condition display shows that the engine is operating under a preset low-to-medium load condition, the ambient temperature is lower than the first preset temperature, and the coolant temperature is higher than the second preset temperature, the solenoid valve is controlled to open to heat the gas at the engine intake end.

4. The engine intake air heating control method according to any one of claims 1 to 3, characterized in that, After the solenoid valve is opened, the engine intake air heating control method further includes: The opening degree of the solenoid valve is determined based on the ambient temperature and the preset map. The preset map contains a mapping relationship between ambient temperature and solenoid valve opening degree.

5. The engine intake air heating control method according to any one of claims 1 to 3, characterized in that, After the solenoid valve is opened, the engine intake air heating control method further includes: Obtain the water temperature at the outlet; The opening degree of the solenoid valve is determined based on the outlet water temperature.

6. An engine intake air heating control device, characterized in that, The engine intake air heating control device is used to heat the gas at the engine intake end of the vehicle by controlling the solenoid valve in the target heating structure; the target heating structure includes a heat exchanger; the heat exchanger is disposed at the engine intake end and is used to heat the gas at the engine intake end; the inlet of the heat exchanger is connected to the engine heater outlet, and the outlet of the heat exchanger is connected to the engine heater return outlet. The solenoid valve is installed on the water inlet pipe of the heat exchanger; The engine intake air heating control device includes: The data acquisition module is used to acquire the ambient temperature of the vehicle's location and the coolant temperature of the engine; A heating control module is used to control the solenoid valve to open in order to heat the gas at the intake end of the engine when the ambient temperature is lower than a first preset temperature and the coolant temperature is higher than a second preset temperature. The data acquisition module is also used for: Obtain the pressure difference between two sides of a target area in the engine's intake manifold; wherein, the target area is the region in the engine's intake manifold that intersects with the engine's tortuous pipe; The heating control module is specifically used to control the solenoid valve to open to heat the gas at the engine intake end when the pressure difference is greater than the preset pressure difference, the ambient temperature is lower than the first preset temperature, and the coolant temperature is higher than the second preset temperature. Before acquiring the pressure difference across the target area in the engine's intake manifold, the data acquisition module is also used to: acquire the vehicle's mileage after this ignition. The data acquisition module is specifically used for: When the operating mileage is greater than the preset mileage, the pressure difference between the two sides of the target area in the intake pipe of the engine is obtained.

7. A vehicle, characterized in that, include: Control terminal; The control terminal includes a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, it implements the steps of the method as described in any one of claims 1 to 5.

8. A computer-readable storage medium storing a computer program, characterized in that, When the computer program is executed by a processor, it implements the steps of the method as described in any one of claims 1 to 5.

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