A method, apparatus and system for controlling engine intake

Abstract

The application discloses an engine air intake control method, device and system. The engine air intake control method comprises the following steps: acquiring a current opening degree of an accelerator pedal in real time; determining a current flow rate and a current tumble ratio of air intake according to the current opening degree; determining a number of guide blocks that need to work and a rotating speed of the guide blocks that need to work according to the current flow rate and the current tumble ratio; wherein the number of guide blocks that need to work determined according to the current flow rate and the current tumble ratio is a first number, and the rotating speed of the guide blocks that need to work determined according to the current flow rate and the current tumble ratio is a first rotating speed; and controlling each guide block of the first number to work at the first rotating speed. According to the technical scheme of the application, the working number and the rotating speed of the guide blocks are controlled, so that the flow rate and the tumble ratio of the air intake are close to or equal to the current flow rate and the current tumble ratio determined by the current opening degree of the accelerator pedal, and the power and the economy of the engine are considered.

Description

Technical Field

[0001] This invention relates to the field of engine control technology, and in particular to a method, device and system for controlling engine intake. Background Technology

[0002] Tumble ratio and flow coefficient (velocity) are key parameters to consider when designing intake manifolds and intake ducts. A higher tumble ratio results in more thorough gas-fuel mixing within the engine cylinders, accelerating combustion and reducing the probability of knocking. This improves engine thermal efficiency while reducing emissions. A higher flow coefficient indicates a greater gas-fuel velocity and a larger intake volume, allowing for more fuel injection and combustion, thus enhancing engine power.

[0003] However, there is an inverse relationship between tumble ratio and flow coefficient. Increasing the tumble ratio usually leads to a decrease in the flow coefficient, while increasing the flow coefficient leads to a decrease in the tumble ratio. This makes it impossible for the current engine intake manifold and intake passage design to balance power and economy. Summary of the Invention

[0004] This invention provides a method, device, and system for controlling engine intake air, so as to balance the engine's power and economy.

[0005] In a first aspect, the present invention provides a method for controlling engine intake air, which is executed by an engine intake air control system, wherein the engine intake air control system includes at least an intake pipe and a plurality of guide blocks disposed within the intake pipe; the method for controlling engine intake air includes:

[0006] Real-time acquisition of the current accelerator pedal opening;

[0007] Based on the current opening degree, determine the current intake flow rate and the current tumble ratio;

[0008] Based on the current flow rate and the current tumble ratio, determine the number of guide blocks that need to work and the rotation speed of the guide blocks that need to work; wherein, the number of guide blocks that need to work, determined based on the current flow rate and the current tumble ratio, is the first number, and the rotation speed of the guide blocks that need to work, determined based on the current flow rate and the current tumble ratio, is the first rotation speed;

[0009] The first number of guide blocks are controlled to operate at the first rotational speed.

[0010] Optionally, based on the current opening degree, the current intake flow rate and current tumble ratio are determined, including:

[0011] Obtain the first mapping relationship between the accelerator pedal opening and the intake air velocity and tumble ratio;

[0012] Based on the current opening of the accelerator pedal and the first mapping relationship, the intake air velocity and tumble ratio corresponding to the current opening are determined as the current velocity and current tumble ratio, respectively.

[0013] Optionally, based on the current flow rate and the current tumble ratio, determining the number of guide blocks that need to operate and the rotation speed of the guide blocks that need to operate includes:

[0014] Obtain a second mapping relationship between the intake air velocity and tumble ratio and the number of working guide blocks and their rotation speed;

[0015] Based on the airflow velocity and tumble ratio determined by the opening information, and based on the second mapping relationship, the number of guide blocks that need to work and the rotation speed of the guide blocks are determined.

[0016] Optionally, the engine intake control system further includes a coolant reservoir, a water pump, a corrugated pipe, and a gas temperature sensor; the coolant reservoir is connected to the corrugated pipe; the coolant reservoir is used to store coolant; the water pump is disposed within the coolant reservoir; the water pump is used to drive the coolant to circulate in the corrugated pipe and the coolant reservoir; the gas temperature sensor is disposed in the intake pipe; the corrugated pipe is disposed on at least one side of the inner wall of the intake pipe; the engine intake control method further includes:

[0017] The current gas temperature in the engine's intake manifold is obtained in real time based on the gas temperature sensor.

[0018] Determine whether the current gas temperature is greater than a first preset temperature;

[0019] If so, the water pump is controlled to be in working condition so that the water pump drives the coolant to circulate in the corrugated pipe and the storage tank.

[0020] Optionally, the engine intake control system further includes at least one electric heating block, which is disposed within the guide block, and each guide block contains one electric heating block. The engine intake control method further includes:

[0021] When the water pump is in operation, it is determined whether the current gas temperature is lower than a second preset temperature;

[0022] If so, the water pump is controlled to stop working, and the number of electric heating blocks that need to work and the working time of the electric heating blocks are determined according to the current gas temperature; wherein, the number of electric heating blocks that need to work determined according to the current temperature is the second number, and the working time of the electric heating blocks determined according to the current temperature is the first time.

[0023] The second number of the electric heating blocks are controlled to continue operating for the first time.

[0024] Optionally, the engine intake control system further includes a liquid temperature sensor and a cooling fan, wherein the liquid temperature sensor is disposed in the liquid reservoir; the liquid reservoir is located at the air outlet of the cooling fan;

[0025] Before controlling the water pump to be in an operational state so that the water pump drives the coolant to circulate in the corrugated pipe and the storage tank, the method further includes:

[0026] The current liquid temperature of the coolant in the storage tank is obtained based on the liquid temperature sensor;

[0027] Determine whether the current liquid temperature is lower than a preset temperature threshold;

[0028] If not, the cooling fan is controlled to operate so that the cold air blown out of the cooling fan outlet cools the coolant in the storage tank.

[0029] Optionally, controlling the water pump to be in an operating state so that the water pump drives the coolant to circulate in the corrugated pipe and the storage tank includes:

[0030] The flow rate of the coolant in the corrugated pipe is determined based on the current gas temperature.

[0031] Based on the liquid flow rate, the water pump is controlled to operate at a speed corresponding to the liquid flow rate, so that the water pump drives the coolant to circulate in the corrugated pipe and the storage tank at the liquid flow rate.

[0032] In a second aspect, the present invention provides an engine intake control device, comprising:

[0033] The current accelerator pedal opening information acquisition module is used to acquire the current accelerator pedal opening in real time;

[0034] The current flow rate and current tumble ratio determination module is used to determine the current flow rate and current tumble ratio of the intake air based on the current opening degree.

[0035] The flow guide block working parameter determination module is used to determine the number of flow guide blocks that need to work and the rotation speed of the flow guide blocks that need to work based on the current flow rate and the current tumble ratio; wherein, the number of flow guide blocks that need to work based on the current flow rate and the current tumble ratio is a first number, and the rotation speed of the flow guide blocks that need to work based on the current flow rate and the current tumble ratio is a first rotation speed;

[0036] The flow guide block working status control module is used to control the first number of flow guide blocks to work at the first rotation speed.

[0037] Thirdly, the present invention provides a control system for engine intake, comprising at least: a controller, an intake pipe, and a plurality of guide blocks disposed within the intake pipe;

[0038] The controller is connected to the control end of the guide block; the controller is used to execute the engine intake control method described in the first aspect.

[0039] Optional components also include: a storage tank, a water pump, a corrugated pipe, and a gas temperature sensor;

[0040] The storage tank is connected to the corrugated pipe; the storage tank is used to store coolant.

[0041] The water pump is installed inside the storage tank; the water pump is used to drive the coolant to circulate in the corrugated pipe and the storage tank;

[0042] The gas temperature sensor is installed in the air intake pipe; the gas temperature sensor is used to detect the gas temperature in the air intake pipe.

[0043] The corrugated wall pipe is disposed on at least one side of the inner wall of the intake pipe.

[0044] Optionally, it may also include: at least one electric heating module;

[0045] The electric heating block is disposed within the flow guide block, and each flow guide block is provided with the electric heating block.

[0046] Optional features also include: a liquid temperature sensor and a cooling fan;

[0047] The liquid temperature sensor is disposed in the liquid storage tank; the liquid temperature sensor is used to detect the liquid temperature of the coolant in the liquid storage tank;

[0048] The liquid storage tank is located at the air outlet of the cooling fan; the cold air blown out by the air outlet of the cooling fan is used to cool the coolant in the liquid storage tank.

[0049] The technical solution provided by this invention acquires the current opening of the accelerator pedal in real time, determines the current airflow velocity and tumble ratio based on the current opening, and then determines the number of guide blocks that need to work and the rotation speed of the guide blocks based on the current airflow velocity and tumble ratio. It controls a first number of guide blocks to work at a first rotation speed. By controlling the number of working guide blocks and their rotation speed, the airflow velocity and tumble ratio are made close to or equal to the current airflow velocity and tumble ratio determined by the current accelerator pedal opening, thus balancing the engine's power and economy. Attached Figure Description

[0050] Figure 1 This is a schematic diagram of the structure of an engine intake control system provided in an embodiment of the present invention;

[0051] Figure 2 A flowchart of an engine intake control method provided in an embodiment of the present invention;

[0052] Figure 3 A flowchart of another engine intake control method provided in an embodiment of the present invention;

[0053] Figure 4 A flowchart illustrating another engine intake control method provided in an embodiment of the present invention;

[0054] Figure 5 A flowchart illustrating another engine intake control method provided in an embodiment of the present invention;

[0055] Figure 6 A flowchart of an engine intake control method provided in an embodiment of the present invention;

[0056] Figure 7 This is a schematic diagram of the structure of an engine intake control device provided in an embodiment of the present invention. Detailed Implementation

[0057] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0058] Example 1

[0059] Figure 1 This is a schematic diagram of the structure of an engine intake control system provided in an embodiment of the present invention, as shown below. Figure 1As shown, the engine intake control system includes at least: a controller 2, an intake pipe 16, and a plurality of guide blocks 10 disposed in the intake pipe 16; the controller 2 is connected to the control end of the guide block 10; the controller 2 is used to execute the engine intake control method provided by the present invention, and has the same beneficial effects as the method, and the similarities can be referred to the relevant description.

[0060] The intake pipe 16 serves as the air intake passage for the engine, providing the engine with the gas required for operation. The guide block 10 has two states: an operating state and a non-operating state. In the operating state, the guide block 10 can rotate along the direction of gas flow within the pipe or in a direction perpendicular to the gas flow direction to change the intake air velocity.

[0061] Specifically, the controller 2 is connected to the control end of the guide block 10, which can control the number of guide blocks 10 in the working state and the rotation speed in the working state, thereby changing the intake flow rate and tumble ratio. According to different needs, the number of guide blocks 10 in operation and the rotation speed can be calculated in reverse from the required flow rate and tumble ratio, so as to simultaneously take into account the power and economy of the engine intake system.

[0062] The technical solution of this invention provides that by setting guide blocks in the intake pipe and controlling the number of guide blocks and their rotation speed during operation by a controller, the flow rate and tumble ratio can reach preset values, thereby achieving both the power and economy of the engine intake system.

[0063] In an alternative embodiment, reference is made to... Figure 1 The engine intake control system also includes: a coolant reservoir 3 (4), a water pump 11 (12), a corrugated pipe 7 (8), and a gas temperature sensor 9; the coolant reservoir 3 (4) is connected to the corrugated pipe 7 (8); the coolant reservoir 3 (4) is used to store coolant; the water pump 11 (12) is located inside the coolant reservoir 3 (4); the water pump 11 (12) is used to drive the coolant to circulate in the corrugated pipe 7 (8) and the coolant reservoir 3 (4); the gas temperature sensor 9 is located in the intake pipe 16; the gas temperature sensor 9 is used to detect the gas temperature in the intake pipe 16; the corrugated pipe 7 (8) is located on at least one side of the inner wall of the intake pipe 16.

[0064] The material and shape of the storage tank 3 (4) can be designed as needed. In an exemplary embodiment, the storage tank 3 (4) can be a cube made of steel. The coolant can be of the type of alcohol, glycerin, ethylene glycol, propylene glycol, etc. The water pump 11 (12) can be a positive displacement pump or a vane pump, etc. The gas temperature sensor 9 includes a contact temperature sensor, etc. The contact sensor is in direct contact with the gas to be measured and has high measurement accuracy.

[0065] Specifically, when the intake air temperature is high and cooling is required, only water pump 11 can be controlled to operate, so that the coolant in the storage tank 3 circulates in the corrugated pipe 7 and the storage tank 3. Since the corrugated pipe 7 has a spaced spherical structure, it can enhance the smooth turbulence of the coolant when flowing through the corrugated pipe 7, thereby improving the heat exchange efficiency. Alternatively, only water pump 12 can be controlled to operate, so that the coolant in the storage tank 4 circulates in the corrugated pipe 8 and the storage tank 4. Or, water pumps 11 and 12 can be controlled to operate simultaneously, so that the coolant in the storage tank 3 circulates in the corrugated pipe 7 and the storage tank 3, and the coolant in the storage tank 4 circulates in the corrugated pipe 8 and the storage tank 4, so that the coolant on both sides participates in the heat exchange process of the intake air at the same time, further improving the heat exchange efficiency.

[0066] It is understood that the corrugated wall pipe can be set on one side of the inner wall of the intake pipe 16 or on both sides of the inner wall of the intake pipe 16. The above is only an example of setting the corrugated wall pipes 7 and 8 on both sides of the inner wall of the intake pipe 16. Other types are also possible and can be designed according to actual needs. No specific limitation is made here.

[0067] In an alternative embodiment, reference is made to... Figure 1 The engine intake control system also includes at least one electric heating block 13. The electric heating block 13 is disposed within the guide block 10, and each guide block 10 contains one electric heating block 13. Thus, when the intake air temperature is low and needs to be raised, the electric heating block 13 in the guide block 10 can be activated to heat the gas passing through the intake pipe, ensuring the intake air temperature is within a preset temperature range. This reduces problems such as increased engine fuel consumption and decreased durability caused by the intake air temperature not being within the appropriate range, thereby improving the engine's operational reliability.

[0068] In an alternative embodiment, reference continues. Figure 1 The engine intake control system also includes: a liquid temperature sensor 14 (15) and a cooling fan 5 (6); the liquid temperature sensor 14 (15) is located in the coolant reservoir 3 (4); the liquid temperature sensor 14 (15) is used to detect the liquid temperature of the coolant in the coolant reservoir 3 (4); the coolant reservoir 3 (4) is located at the air outlet of the cooling fan 5 (6); the cold air blown out by the air outlet of the cooling fan 5 (6) is used to cool the coolant in the coolant reservoir 3 (4).

[0069] The operating speed and operating time of the cooling fan 5 (6) can be selected according to actual needs, and are not limited here.

[0070] Specifically, liquid temperature sensor 14 is used to detect the temperature of the coolant in reservoir 3. When the detected coolant temperature in reservoir 3 is higher than a preset temperature threshold, cooling fan 5 operates, drawing in air from the air inlet and blowing it out of the air outlet. The cold air from the air outlet can lower the coolant temperature. The longer cooling fan 5 operates, the lower the coolant temperature. Correspondingly, liquid temperature sensor 15 is used to detect the temperature of the coolant in reservoir 4. When the detected coolant temperature in reservoir 4 is higher than a preset temperature threshold, cooling fan 6 operates, drawing in air from the air inlet, cooling it, and then blowing it out of the air outlet. The cold air from the air outlet can lower the coolant temperature. The longer cooling fan 6 operates, the lower the coolant temperature.

[0071] In an alternative embodiment, reference is made to... Figure 1 The engine intake control system also includes a storage battery 1, which is electrically connected to the power supply terminals of the controller 2, the cooling fan 5 (6), each guide block 10 and the water pump 11 (12) to provide the electrical energy required for operation to the controller 2, the cooling fan 5 (6), each guide block 10 and the water pump 11 (12).

[0072] The engine intake control system provided in this embodiment of the invention can execute the engine intake control method provided in this embodiment of the invention, and has the corresponding functional modules and beneficial effects of the execution method. For similarities, please refer to the relevant descriptions of other embodiments of the invention.

[0073] Example 2

[0074] Figure 2 This is a flowchart illustrating an engine intake control method according to an embodiment of the present invention. This method is applicable to situations where relevant operating parameters of the engine intake are adjusted and controlled. The engine intake control method can be executed using the engine intake control system provided by the present invention. This engine intake control system can be implemented in hardware and / or software. The engine intake control system includes at least an intake pipe and multiple guide blocks disposed within the intake pipe. Figure 2 As shown, the engine intake control method includes:

[0075] S101: Real-time acquisition of the current opening degree of the accelerator pedal.

[0076] Specifically, the current accelerator pedal opening can be obtained in real time through a pedal sensor, and subsequent operations are executed based on this opening. The driver's demand for vehicle power or fuel economy is reflected in the current accelerator pedal opening. For example, when the current accelerator pedal opening is greater than a first preset value, it indicates that the driver has a greater demand for vehicle power; when the current accelerator pedal opening is less than a second preset value, it indicates that the driver has a greater demand for vehicle fuel economy. The first preset value is greater than the second preset value.

[0077] S102. Determine the current intake flow rate and current tumble ratio based on the current opening degree.

[0078] Among them, the current intake velocity represents the current flow speed of the gas in the intake pipe, and the current tumble ratio represents the ratio of the rotation speed of the mixed gas rolling in the combustion chamber to the engine speed. The larger the ratio, the better the combustion effect and the stronger the engine power.

[0079] Specifically, since the flow rate and tumble ratio are related to the current opening, the current flow rate and tumble ratio of the intake air can be determined based on the relationship diagram or table between the current opening and the two, so that the flow rate of the intake air can be controlled in the future based on the current flow rate and tumble ratio.

[0080] In an optional embodiment, determining the current intake air velocity and current tumble ratio based on the current accelerator pedal opening includes: obtaining a first mapping relationship between the accelerator pedal opening and the intake air velocity and tumble ratio; and determining the intake air velocity and tumble ratio corresponding to the current accelerator pedal opening based on the first mapping relationship. The first mapping relationship may include a graph or table, and can be obtained through multiple experiments, etc., and is not limited here. Different accelerator pedal openings correspond to different current velocities and current tumble ratios. Based on the first mapping relationship, the current intake air velocity and current tumble ratio corresponding to the current opening can be determined, which can improve the control accuracy of subsequent operations when performing subsequent operations based on the current velocities and current tumble ratios.

[0081] S103. Based on the current flow rate and the current tumble ratio, determine the number of guide blocks that need to work and the rotation speed of the guide blocks that need to work.

[0082] The number of guide blocks that need to work, determined based on the current flow rate and the current tumble ratio, is the first number, and the rotation speed of the guide blocks that need to work, determined based on the current flow rate and the current tumble ratio, is the first rotation speed.

[0083] Specifically, the first quantity and the first rotation speed are related to the current flow rate and the current tumble ratio. Based on the number of guide blocks that need to work and the corresponding table or curve of the rotation speed of the guide blocks to work with the flow rate and tumble ratio, the first quantity of guide blocks that need to work and the first rotation speed of the guide blocks to work can be determined, so as to control the working state of each guide block according to the first quantity and the first rotation speed.

[0084] In an optional embodiment, determining the number of guide blocks that need to operate and their rotational speed based on the current flow rate and current tumble ratio includes: obtaining a second mapping relationship between the intake flow rate and tumble ratio and the number and rotational speed of the guide blocks; and determining the number and rotational speed of the guide blocks based on the intake flow rate and tumble ratio determined by the opening information and the second mapping relationship. The second mapping relationship may include a graph or table, and can be obtained through multiple experiments, etc., and is not limited here. Different current flow rates and different current tumble ratios correspond to different numbers and different rotational speeds of guide blocks that need to operate. Based on the second mapping relationship, the number and rotational speed of the guide blocks that need to operate corresponding to the current flow rate and current tumble ratio can be determined. Controlling the operating state of the guide blocks based on this number and rotational speed can improve control accuracy.

[0085] S104. Control the first number of guide blocks to operate at the first rotational speed.

[0086] The number of guide blocks installed in the intake duct is greater than or equal to the first number. The number of guide blocks can be set according to actual needs and is not specifically limited here. In an exemplary embodiment, the number of guide blocks is 8.

[0087] Specifically, after obtaining the current opening of the accelerator pedal, the current airflow velocity and current tumble ratio corresponding to the current opening are determined. Based on the determined current airflow velocity and current tumble ratio, the number of guide blocks that need to work and the rotation speed of the guide blocks that need to work are further determined. For example, if the number of guide blocks that need to work is 4 and the rotation speed of the guide blocks that need to work is 5 r / s, any 4 guide blocks in the intake pipe can be controlled to rotate at a rotation speed of 5 r / s to drive the gas in the intake pipe to flow faster, change the gas flow velocity in the intake pipe, and thus make the airflow velocity and tumble ratio close to or equal to the current airflow velocity and tumble ratio, so as to achieve the goal of balancing power and economy.

[0088] The technical solution provided by this invention obtains the current opening of the accelerator pedal in real time, determines the current airflow velocity and tumble ratio based on the current opening, and then determines the number of guide blocks that need to work and the rotation speed of the guide blocks based on the current airflow velocity and tumble ratio. It controls a first number of guide blocks to work at a first rotation speed. By controlling the number of working guide blocks and their rotation speed, the airflow velocity and tumble ratio are made close to or equal to the current airflow velocity and tumble ratio determined by the current accelerator pedal opening, thus balancing the engine's power and economy.

[0089] Example 3

[0090] Based on the above embodiments, such as Figure 1 As shown, the engine intake control system also includes a coolant reservoir 3 (4), a water pump 11 (12), a corrugated wall pipe 7 (8), and a gas temperature sensor 9; the coolant reservoir 3 (4) is connected to the corrugated wall pipe 7 (8); the coolant reservoir 3 (4) is used to store coolant; the water pump 11 (12) is located inside the coolant reservoir 3 (4); the water pump 11 (12) is used to drive the coolant to circulate in the corrugated wall pipe 7 (8) and the coolant reservoir 3 (4); the gas temperature sensor 9 is located in the intake pipe 16; the corrugated wall pipe is located on at least one side of the inner wall of the intake pipe.

[0091] Figure 3 This is a flowchart illustrating another engine intake control method provided by an embodiment of the present invention. This method can be executed by the engine intake control system. Based on the above embodiments, this embodiment describes the gas temperature control in the intake manifold. Figure 3 As shown, the engine intake control method includes:

[0092] S201: Real-time acquisition of the current opening degree of the accelerator pedal.

[0093] S202. Based on the current opening degree, determine the current intake flow rate and the current tumble ratio.

[0094] S203. Based on the current flow rate and the current tumble ratio, determine the number of guide blocks that need to be worked and the rotation speed of the guide blocks that need to be worked.

[0095] S204. Control the first number of guide blocks to operate at the first rotational speed.

[0096] S205. The current gas temperature in the engine's intake manifold is obtained in real time based on a gas temperature sensor.

[0097] When the intake gas flows through the intake pipe, the gas temperature sensor installed in the intake pipe can obtain the current gas temperature, which can facilitate the subsequent execution of corresponding operations based on the current gas temperature value.

[0098] S206. Determine whether the current gas temperature is greater than the first preset temperature; if so, proceed to S207.

[0099] The first preset temperature can be a fixed value, which can be set according to actual needs. In an exemplary embodiment, the first preset temperature can be 80°C.

[0100] Specifically, if the current gas temperature is higher than the first preset temperature, it will lead to engine knocking, reduced mechanical properties of engine components resulting in deformation and damage, and reduced engine reliability and durability. Therefore, when the current gas temperature is higher than the first preset temperature, temperature control measures need to be taken to reduce the intake gas temperature and improve engine reliability.

[0101] S207. Control the water pump to be in working condition so that the water pump drives the coolant to circulate in the corrugated pipe and the storage tank.

[0102] Specifically, after the gas temperature sensor acquires the current gas temperature in the engine's intake manifold in real time, it determines whether the current gas temperature is greater than a first preset temperature. If the current gas temperature is greater than the first preset temperature, the water pump is controlled to be in working state, so that the water pump drives the coolant to circulate in the corrugated pipe and the reservoir, so that the coolant flowing through the corrugated pipe exchanges heat with the gas in the intake manifold, reducing the gas temperature and achieving the purpose of cooling the gas in the intake manifold.

[0103] It is understood that the above-described sequence of the engine intake control method is merely an illustrative example, and other sequences may be set, such as steps S201 to S204 being located after S207, or other sequences. Without affecting the core inventive points of the present invention, the present invention does not impose specific limitations on these sequences.

[0104] The technical solution provided by this invention uses a gas temperature sensor to obtain the current gas temperature in the engine's intake pipe in real time and determines whether the current gas temperature is greater than a first preset temperature. If the current gas temperature is greater than the first preset temperature, it indicates that the current gas temperature will have a negative impact on the engine's reliability and durability. By controlling the water pump to be in working state, the water pump drives the coolant to circulate in the corrugated pipe and the reservoir, and the coolant exchanges heat with the intake gas to achieve the purpose of reducing the intake gas temperature, thereby improving the engine's reliability and durability.

[0105] Example 4

[0106] Based on the above embodiments, such as Figure 1 As shown, the engine intake control system also includes at least one electric heating block 13, which is disposed within the guide block 10, and each guide block 10 is provided with one electric heating block 13.

[0107] Figure 4 This is a flowchart illustrating another engine intake control method provided by an embodiment of the present invention. This method can be executed by the engine intake control system. Based on the above embodiments, this embodiment describes the gas temperature control when the water pump is in operation. Figure 4As shown, the engine intake control method includes:

[0108] S301: Real-time acquisition of the current opening degree of the accelerator pedal.

[0109] S302. Determine the current intake flow rate and current tumble ratio based on the current opening degree.

[0110] S303. Based on the current flow rate and the current tumble ratio, determine the number of guide blocks that need to be worked and the rotation speed of the guide blocks that need to be worked.

[0111] S304. Control the first number of guide blocks to operate at a first rotational speed.

[0112] S305: Real-time acquisition of the current gas temperature in the engine's intake manifold based on a gas temperature sensor.

[0113] S306. Determine whether the current gas temperature is greater than the first preset temperature; if so, execute S307.

[0114] S307. Control the water pump to be in working condition so that the water pump drives the coolant to circulate in the corrugated pipe and the storage tank.

[0115] S308. When the water pump is in operation, determine whether the current gas temperature is lower than the second preset temperature; if so, execute S309.

[0116] The second preset temperature can be a fixed value, which can be set according to actual needs. In an exemplary embodiment, the second preset temperature can be 10°C.

[0117] Specifically, if the current gas temperature is greater than or equal to the second preset temperature, it indicates that the gas temperature is between the first and second preset temperatures, and has little impact on the engine's power and durability; therefore, no adjustment of the current gas temperature is necessary. If the current gas temperature is lower than the second preset temperature, it will lead to increased fuel consumption and reduced engine reliability and durability. Therefore, when the current gas temperature is lower than the second preset temperature, temperature control measures need to be taken to raise the intake gas temperature and improve engine reliability.

[0118] S309. Control the water pump to stop working, and determine the number of electric heating blocks that need to work and the working time of the electric heating blocks based on the current gas temperature.

[0119] The number of electric heating blocks that need to operate, determined based on the current temperature, is the second quantity, and the operating time of the electric heating blocks, determined based on the current temperature, is the first time. The second quantity is a positive integer greater than or equal to 1, and the first time is greater than 0 seconds.

[0120] Specifically, after the gas temperature sensor acquires the current gas temperature in the engine's intake manifold in real time, it determines whether the current gas temperature is greater than a first preset temperature. If the current gas temperature is greater than the first preset temperature, the water pump is controlled to operate, so that the water pump drives the coolant to circulate in the corrugated pipe and the reservoir, so that the coolant flowing through the corrugated pipe exchanges heat with the gas in the intake manifold, thereby reducing the gas temperature. When the water pump is operating, it determines whether the current gas temperature is less than a second preset temperature. If the current gas temperature is less than the second preset temperature, the water pump is controlled to stop operating, and based on the current gas temperature, the number of electric heating blocks that need to operate and the operating time of the electric heating blocks are determined to heat the gas in the intake manifold and increase the gas temperature.

[0121] S310, control the second number of electric heating blocks to continue working immediately.

[0122] Among them, reference Figure 1 Based on the determined second quantity and first time, the operation of the second quantity of electric heating blocks is controlled. This can be achieved by controlling the electric heating blocks on both sides of the intake pipe 16 to operate at intervals, thereby improving heating uniformity and efficiency. Alternatively, the operation of the second quantity of electric heating blocks can be controlled to operate continuously for the first time, so that the gas temperature in the intake pipe recovers to a state greater than the second preset temperature within the first time, thereby improving controllability and work efficiency.

[0123] Specifically, if the current gas temperature in the intake pipe is lower than the second preset temperature, the water pump needs to be stopped. Based on the current gas temperature, the number of electric heating blocks that need to work (second number) and the working time of the electric heating blocks (first time) are determined. The second number of electric heating blocks are then controlled to work continuously for the first time to heat the gas in the intake pipe, raise the gas temperature, and make the gas temperature in the intake pipe between the first preset temperature and the second preset temperature.

[0124] It is understandable that the above description only uses the example of the electric heating blocks on both sides of the intake pipe working at a uniform interval. It is also possible to control only one side of the electric heating block to work, or to heat the electric heating blocks on both sides in a non-uniform interval, etc. It can be set according to actual needs, and no specific limitation is made here.

[0125] It is also understood that the above-described sequence of the engine intake control method is merely an illustrative example, and other sequences may be set, such as the steps of S301 to S304 being located after S310, or other sequences. Without affecting the core inventive points of the present invention, the present invention does not impose specific limitations on these sequences.

[0126] The technical solution provided by this invention determines whether the current gas temperature is lower than a second preset temperature when the water pump is in operation. If the current gas temperature is lower than the second preset temperature, the water pump is stopped. Based on the current gas temperature, the required number of electric heating blocks and their operating time are determined, and then the second number of electric heating blocks are controlled to operate continuously for a first time. Thus, by controlling the second number of electric heating blocks to operate continuously for a first time based on the relationship between the second number, the first time, and the current gas temperature, the purpose of raising the gas temperature is achieved, thereby improving heat exchange efficiency.

[0127] Example 5

[0128] Based on the above embodiments, such as Figure 1 As shown, the engine intake control system also includes a liquid temperature sensor 14 (15) and a cooling fan 5 (6). The liquid temperature sensor 14 (15) is located in the liquid reservoir 3 (4). The liquid reservoir 3 (4) is located at the air outlet of the cooling fan 5 (6).

[0129] Figure 5 This is a flowchart illustrating another engine intake control method provided in an embodiment of the present invention. This method can be executed by the engine intake control system. Based on the above embodiments, this embodiment describes the situation before the water pump is controlled to operate, so that the water pump drives the coolant to circulate in the corrugated pipe and the reservoir. Figure 5 As shown, the engine intake control method includes:

[0130] S401: Real-time acquisition of the current accelerator pedal opening.

[0131] S402. Determine the current intake flow rate and current tumble ratio based on the current opening degree.

[0132] S403. Based on the current flow rate and the current tumble ratio, determine the number of guide blocks that need to be worked and the rotation speed of the guide blocks that need to be worked.

[0133] S404. Control the first number of guide blocks to operate at a first rotational speed.

[0134] S405. The current gas temperature in the engine's intake manifold is obtained in real time based on a gas temperature sensor.

[0135] S406. Determine whether the current gas temperature is greater than the first preset temperature; if so, execute S407.

[0136] S407. Obtain the current liquid temperature of the coolant in the storage tank based on the liquid temperature sensor.

[0137] Specifically, the liquid temperature sensor is placed in the liquid storage tank to detect the current liquid temperature of the coolant in the tank, so that corresponding control operations can be performed based on the current liquid temperature.

[0138] S408. Determine whether the current liquid temperature is lower than the preset temperature threshold; if not, proceed to S409.

[0139] The preset temperature threshold is a fixed value that can be set according to actual needs. In an exemplary embodiment, the preset temperature threshold can be -20℃.

[0140] Specifically, since the coolant in the reservoir is used to cool the gas in the intake pipe, if the current liquid temperature is greater than or equal to a preset temperature threshold, it indicates that the current cooling heat exchange efficiency of the coolant is low. That is, when cooling the same intake gas temperature, coolant with a current liquid temperature greater than or equal to the preset temperature threshold requires a longer cooling time compared to coolant with a current liquid temperature below the preset temperature threshold. Therefore, it is necessary to perform operations to lower the coolant temperature to improve the coolant's heat exchange efficiency and reduce its circulation time.

[0141] S409. Control the operation of the cooling fan so that the cold air blown out of the cooling fan outlet cools the coolant in the reservoir.

[0142] The operating speed and duration of the cooling fan can be selected according to actual needs, and no restrictions are imposed here.

[0143] Specifically, after the gas temperature sensor acquires the current gas temperature in the engine's intake manifold in real time, it determines whether the current gas temperature is greater than a first preset temperature. If the current gas temperature is greater than the first preset temperature, the current liquid temperature of the coolant in the reservoir is acquired based on the liquid temperature sensor, and it is determined whether the current liquid temperature is less than a preset temperature threshold. If the current liquid temperature is greater than or equal to the preset temperature threshold, the cooling fan is controlled to operate so that the cold air blown out of the cooling fan outlet cools the coolant in the reservoir. The higher the operating speed of the cooling fan and / or the longer the operating time, the lower the temperature of the coolant. When the current liquid temperature of the coolant is less than the preset temperature threshold, the cooling fan is controlled to stop operating. At this time, the coolant can be used to cool the intake manifold.

[0144] S410. Control the water pump to be in working condition so that the water pump drives the coolant to circulate in the corrugated pipe and the reservoir.

[0145] It is understood that the above-described sequence of the engine intake control method is merely an illustrative example, and other sequences may be used. For example, steps S401 to S404 may be located after S410, or other sequences may be used. Without affecting the core inventive points of the present invention, the present invention does not impose specific limitations on these sequences.

[0146] The technical solution provided by this invention obtains the current liquid temperature of the coolant in the storage tank using a liquid temperature sensor, determines whether the current liquid temperature is lower than a preset temperature threshold, and if the current liquid temperature is greater than or equal to the preset temperature threshold, controls the cooling fan to operate so that the cold air blown from the cooling fan outlet cools the coolant in the storage tank. Thus, by setting and controlling the operation of the cooling fan, the temperature of the coolant can be kept below the preset temperature threshold, thereby improving heat exchange efficiency during the heat exchange between the coolant and the gas.

[0147] Example 6

[0148] Figure 6 This is a flowchart illustrating an engine intake control method according to an embodiment of the present invention. Based on the above embodiments, this embodiment describes the control of a water pump to be in operation, so that the water pump drives the coolant to circulate in the corrugated pipe and the reservoir. Figure 6 As shown, the engine intake control method includes:

[0149] S501: Real-time acquisition of the current accelerator pedal opening.

[0150] S502. Determine the current intake flow rate and current tumble ratio based on the current opening degree.

[0151] S503. Based on the current flow rate and the current tumble ratio, determine the number of guide blocks that need to be worked and the rotation speed of the guide blocks that need to be worked.

[0152] S504. Control the first number of guide blocks to operate at a first rotational speed.

[0153] S505: Real-time acquisition of the current gas temperature in the engine's intake manifold based on a gas temperature sensor.

[0154] S506. Determine whether the current gas temperature is greater than the first preset temperature; if so, execute S507.

[0155] S507. Determine the flow rate of the coolant in the corrugated pipe based on the current gas temperature.

[0156] Specifically, the different flow rates of the coolant in the corrugated pipe result in different times for the current gas temperature to drop below the first preset temperature. Based on the current gas temperature, the flow rate of the coolant in the corrugated pipe can be determined according to the correspondence diagram or table between gas temperature and liquid flow rate, thereby shortening the cooling time and improving cooling efficiency.

[0157] S508. Based on the liquid flow rate, control the water pump to operate at a speed corresponding to the liquid flow rate, so that the water pump drives the coolant to circulate in the corrugated pipe and the storage tank at the liquid flow rate.

[0158] The flow rate of the liquid is positively correlated with the speed of the water pump. The higher the speed of the water pump, the greater the flow rate of the liquid. Based on the relationship diagram or table between the liquid flow rate and the water pump speed, the water pump speed corresponding to the liquid flow rate is determined, and the water pump is controlled to operate at this speed so that the coolant circulates in the corrugated pipe and the liquid storage tank at the liquid flow rate, thereby improving the heat exchange efficiency.

[0159] Specifically, after the gas temperature sensor acquires the current gas temperature in the engine's intake manifold in real time, it determines whether the current gas temperature is greater than a first preset temperature. If the current gas temperature is greater than the first preset temperature, the coolant flow rate in the corrugated pipe is determined based on the current gas temperature. Then, based on the flow rate, the water pump is controlled to operate at a speed corresponding to the flow rate, so that the water pump drives the coolant to circulate in the corrugated pipe and the reservoir at a flow rate corresponding to the flow rate. For example, if the flow rate is 2 m / s and the water pump speed is 1500 r / min, the water pump is controlled to operate at a speed of 1500 r / min to make the flow rate 2 m / s, thereby improving heat exchange efficiency.

[0160] It is understood that the above-described sequence of the engine intake control method is merely an illustrative example, and other sequences may be used. For example, steps S501 to S504 may be placed after S508, or other sequences may be used. Without affecting the core inventive points of the present invention, the present invention does not impose specific limitations on these sequences.

[0161] The technical solution provided by this invention determines the liquid flow rate of the coolant in the corrugated pipe based on the current gas temperature, and controls the water pump to operate at a speed corresponding to the liquid flow rate, so that the water pump drives the coolant to circulate in the corrugated pipe and the storage tank at the liquid flow rate, thereby improving the heat exchange efficiency between the coolant and the gas and shortening the heat exchange time.

[0162] Example 7

[0163] Figure 7This is a schematic diagram of the structure of an engine intake control device provided in an embodiment of the present invention. The engine intake control device can be implemented in hardware and / or software, and can be integrated into the controller of the engine intake control system provided in this embodiment of the present invention. Figure 7 As shown, the engine intake control device includes:

[0164] The current opening information acquisition module 21 is used to acquire the current opening of the accelerator pedal in real time;

[0165] The current flow rate and current tumble ratio determination module 22 is used to determine the current flow rate and current tumble ratio of the intake air based on the current opening degree.

[0166] The guide block working parameter determination module 23 is used to determine the number of guide blocks that need to work and the rotation speed of the guide blocks that need to work based on the current flow rate and the current tumble ratio; wherein, the number of guide blocks that need to work based on the current flow rate and the current tumble ratio is the first number, and the rotation speed of the guide blocks that need to work based on the current flow rate and the current tumble ratio is the first rotation speed.

[0167] The flow guide block working status control module 24 is used to control the first number of flow guide blocks to work at a first rotation speed.

[0168] Optionally, the current flow rate and current tumble ratio determination module 22 includes a first mapping relationship acquisition unit and a current flow rate and current tumble ratio determination unit based on the first mapping relationship. The first mapping relationship acquisition unit is used to acquire a first mapping relationship between the accelerator pedal opening and the intake air flow rate and tumble ratio. The current flow rate and current tumble ratio determination unit based on the first mapping relationship is used to determine the intake air flow rate and tumble ratio corresponding to the current opening based on the first mapping relationship, according to the current opening of the accelerator pedal.

[0169] Optionally, the guide block working parameter determination module 23 includes a second mapping relationship acquisition unit and a guide block working parameter determination unit based on the second mapping relationship. The second mapping relationship acquisition unit is used to acquire a second mapping relationship between the intake air velocity and tumble ratio and the number of guide blocks and their rotation speed. The guide block working parameter determination unit based on the second mapping relationship is used to determine the number of guide blocks that need to work and the rotation speed of the guide blocks based on the intake air velocity and tumble ratio determined by the opening information and the second mapping relationship.

[0170] Optionally, the engine intake control device may also include:

[0171] The current gas temperature acquisition module is used to acquire the current gas temperature in the engine's intake manifold in real time based on the gas temperature sensor.

[0172] The current gas temperature determination module is used to determine whether the current gas temperature is greater than the first preset temperature;

[0173] The water pump control module is used to control the water pump to be in working condition so that the water pump drives the coolant to circulate in the corrugated pipe and the storage tank;

[0174] The current gas temperature judgment module is used to determine whether the current gas temperature is lower than the second preset temperature when the water pump is in operation.

[0175] The electric heating block operating parameter determination module is used to determine the number of electric heating blocks that need to work and the working time of the electric heating blocks based on the current gas temperature when the water pump is controlled to stop working; wherein, the number of electric heating blocks that need to work based on the current temperature is the second quantity, and the working time of the electric heating blocks based on the current temperature is the first time.

[0176] The electric heating block working status control module is used to control the second number of electric heating blocks to work continuously for a first time.

[0177] Optionally, the engine intake control device may also include:

[0178] The current liquid temperature acquisition module is used to acquire the current liquid temperature of the coolant in the storage tank based on the liquid temperature sensor;

[0179] The current liquid temperature determination module is used to determine whether the current liquid temperature is lower than a preset temperature threshold.

[0180] The cooling fan control module is used to control the operation of the cooling fan so that the cold air blown out of the cooling fan outlet cools the coolant in the storage tank.

[0181] Optionally, the engine intake control device may also include:

[0182] The liquid flow rate determination module is used to determine the liquid flow rate of the coolant in the corrugated pipe based on the current gas temperature.

[0183] The water pump speed control module controls the water pump to operate at a speed corresponding to the liquid flow rate, so that the water pump drives the coolant to circulate in the corrugated pipe and the storage tank at the liquid flow rate.

[0184] The engine intake control device provided in the embodiments of the present invention can execute the engine intake control method provided in any embodiment of the present invention, and has the corresponding functional modules and beneficial effects of the execution method. The similarities can be referred to the above description.

[0185] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, combinations, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

Claims

1. A method for controlling engine intake air, implemented using an engine intake air control system, characterized in that, The engine intake control system includes at least an intake pipe and a plurality of guide blocks disposed within the intake pipe; the engine intake control method includes: Get the current opening of the accelerator pedal in real time; Based on the current opening degree, determine the current intake flow rate and the current tumble ratio; Based on the current flow rate and the current tumble ratio, determine the number of guide blocks that need to work and the rotation speed of the guide blocks that need to work; wherein, the number of guide blocks that need to work, determined based on the current flow rate and the current tumble ratio, is the first number, and the rotation speed of the guide blocks that need to work, determined based on the current flow rate and the current tumble ratio, is the first rotation speed; The first number of guide blocks are controlled to operate at the first rotational speed; Determining the current intake flow rate and current tumble ratio based on the current opening includes: Obtain the first mapping relationship between the accelerator pedal opening and the intake air velocity and tumble ratio; Based on the current opening of the accelerator pedal and the first mapping relationship, the intake air velocity and tumble ratio corresponding to the current opening are determined as the current velocity and current tumble ratio, respectively. Based on the current flow rate and the current tumble ratio, determine the number of guide blocks that need to operate and the rotation speed of the guide blocks that need to operate, including: Obtain a second mapping relationship between the intake air velocity and tumble ratio and the number of working guide blocks and their rotation speed; Based on the intake flow rate and tumble ratio determined by the opening information, and based on the second mapping relationship, the number of guide blocks that need to work and the rotation speed of the guide blocks are determined.

2. The engine intake control method according to claim 1, characterized in that, The engine intake control system further includes a coolant reservoir, a water pump, a corrugated pipe, and a gas temperature sensor; the coolant reservoir is connected to the corrugated pipe; the coolant reservoir is used to store coolant; the water pump is disposed within the coolant reservoir; the water pump is used to drive the coolant to circulate in the corrugated pipe and the coolant reservoir; the gas temperature sensor is disposed in the intake pipe; the corrugated pipe is disposed on at least one side of the inner wall of the intake pipe; the engine intake control method further includes: The current gas temperature in the engine's intake manifold is obtained in real time based on the gas temperature sensor. Determine whether the current gas temperature is greater than the first preset temperature; If so, the water pump is controlled to be in working condition so that the water pump drives the coolant to circulate in the corrugated pipe and the storage tank.

3. The engine intake control method according to claim 2, characterized in that, The engine intake control system further includes at least one electric heating block, which is disposed within the guide block, and each guide block contains one electric heating block. The engine intake control method further includes: When the water pump is in operation, it is determined whether the current gas temperature is lower than the second preset temperature; If so, the water pump is controlled to stop working, and the number of electric heating blocks that need to work and the working time of the electric heating blocks are determined according to the current gas temperature; wherein, the number of electric heating blocks that need to work determined according to the current gas temperature is the second number, and the working time of the electric heating blocks determined according to the current gas temperature is the first time. The second number of the electric heating blocks are controlled to continue operating for the first time.

4. The engine intake control method according to claim 2, characterized in that, The engine intake control system also includes a liquid temperature sensor and a cooling fan, wherein the liquid temperature sensor is disposed in the liquid reservoir; the liquid reservoir is located at the air outlet of the cooling fan; Before controlling the water pump to be in an operational state so that the water pump drives the coolant to circulate in the corrugated pipe and the storage tank, the method further includes: The current liquid temperature of the coolant in the storage tank is obtained based on the liquid temperature sensor; Determine whether the current liquid temperature is lower than a preset temperature threshold; If not, the cooling fan is controlled to operate so that the cold air blown out of the cooling fan outlet cools the coolant in the storage tank.

5. The engine intake control method according to claim 2, characterized in that, Controlling the water pump to be in an operational state, so that the water pump drives the coolant to circulate in the corrugated pipe and the storage tank, includes: The flow rate of the coolant in the corrugated pipe is determined based on the current gas temperature. Based on the liquid flow rate, the water pump is controlled to operate at a speed corresponding to the liquid flow rate, so that the water pump drives the coolant to circulate in the corrugated pipe and the storage tank at the liquid flow rate.

6. A control device for engine intake, characterized in that, include: The current accelerator pedal opening information acquisition module is used to acquire the current accelerator pedal opening in real time; The current flow rate and current tumble ratio determination module is used to determine the current flow rate and current tumble ratio of the intake air based on the current opening degree. Determining the current airflow velocity and current tumble ratio based on the current opening includes: obtaining a first mapping relationship between the accelerator pedal opening and the airflow velocity and tumble ratio; and determining the airflow velocity and tumble ratio corresponding to the current opening based on the first mapping relationship, respectively, as the current airflow velocity and current tumble ratio. The guide block working parameter determination module is used to determine the number of guide blocks that need to work and the rotation speed of the guide blocks that need to work based on the current flow rate and the current tumble ratio. The number of guide blocks that need to work based on the current flow rate and the current tumble ratio is a first number, and the rotation speed of the guide blocks that need to work based on the current flow rate and the current tumble ratio is a first rotation speed. Determining the number of guide blocks that need to work and the rotation speed of the guide blocks that need to work based on the current flow rate and the current tumble ratio includes: acquiring a second mapping relationship between the intake flow rate and tumble ratio and the number of guide blocks working and their rotation speed; and determining the number of guide blocks that need to work and their rotation speed based on the second mapping relationship, using the intake flow rate and tumble ratio determined by the opening information. The flow guide block working status control module is used to control the first number of flow guide blocks to work at the first rotation speed.

7. A control system for engine intake, characterized in that, It includes at least: a controller, an air intake pipe, and multiple guide blocks disposed within the air intake pipe; The controller is connected to the control end of the guide block; the controller is used to execute the engine intake control method according to any one of claims 1-5.

8. The engine intake control system according to claim 7, characterized in that, Also includes: Liquid storage tank, water pump, corrugated pipe, and gas temperature sensor; The storage tank is connected to the corrugated pipe; the storage tank is used to store coolant. The water pump is installed inside the storage tank; the water pump is used to drive the coolant to circulate in the corrugated pipe and the storage tank; The gas temperature sensor is installed in the air intake pipe; the gas temperature sensor is used to detect the gas temperature in the air intake pipe. The corrugated wall pipe is disposed on at least one side of the inner wall of the intake pipe.

9. The engine intake control system according to claim 7, characterized in that, Also includes: At least one electric heating module; The electric heating block is disposed within the flow guide block, and each flow guide block is provided with the electric heating block.

10. The engine intake control system according to claim 8, characterized in that, Also includes: Liquid temperature sensor and cooling fan; The liquid temperature sensor is installed in the liquid storage tank; The liquid temperature sensor is used to detect the liquid temperature of the coolant in the storage tank; The liquid storage tank is located at the air outlet of the cooling fan; the cold air blown out by the air outlet of the cooling fan is used to cool the coolant in the liquid storage tank.

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