An engine intake filtering control method and device, electronic equipment and medium

Abstract

The application discloses an engine intake filtering control method and device, electronic equipment and medium, and relates to the technical field of automobile electronics. In the operation process of the engine, the operation parameter information and the design parameter information of the engine are acquired. The design parameter information includes engine structure parameter information and filter pipe design parameter information. The operation parameter information includes engine speed and intake manifold pressure. According to the engine structure parameter information, the engine speed and the intake manifold pressure, the target intake flow through the cyclone filter is determined. According to the target intake flow and the filter pipe design parameter information, the target filter pipe quantity is determined. The target filter pipe quantity of the cyclone filter is selected from the cyclone filter as the target cyclone filter, and the target cyclone filter is set to an open state. The method can improve the impurity separation efficiency of the cyclone filter and prolong the service life of the filter element of the cyclone filter.

Description

Technical Field

[0001] This application relates to the field of automotive electronics technology, and in particular to an intake air filtration control method, device, electronic equipment, and medium for an engine. Background Technology

[0002] Currently, cyclone filters are increasingly widely used in engine intake systems. A cyclone filter has a cyclone filter tube placed in front of the paper filter element. It uses the centrifugal force generated by the cyclone to remove larger particulate impurities from the intake air, thus improving filter element lifespan.

[0003] In related technologies, the filtration efficiency of cyclone filters is designed based on the rated flow rate. At low loads, the air velocity is low, resulting in poor impurity separation efficiency of the cyclone filter. Summary of the Invention

[0004] This application provides an intake air filtration control method, device, electronic equipment, and medium for an engine, which can improve the efficiency of impurity separation in a cyclone filter and extend the filter element life of the cyclone filter.

[0005] In a first aspect, embodiments of this application provide an intake air filtration control method for an engine, the engine including a cyclone filter; the cyclone filter includes a filter element and a plurality of cyclone filter tubes; the method includes:

[0006] The engine's operating parameters and design parameters are obtained; the design parameters include engine structural parameters and filter pipe design parameters; the operating parameters include engine speed and intake manifold pressure.

[0007] Based on the engine structural parameters, engine speed, and intake manifold pressure, determine the target intake airflow through the cyclone filter;

[0008] The target number of filter tubes is determined based on the target air intake flow rate and the filter tube design parameters.

[0009] Select the target number of cyclone filter tubes from the cyclone filter as the target cyclone filter tubes, and set the target cyclone filter tubes to the open state.

[0010] The above method acquires engine operating parameters and design parameters. The design parameters include engine structural parameters and filter tube design parameters. The operating parameters include engine speed and intake manifold pressure. Based on the engine structural parameters, engine speed, and intake manifold pressure, the target intake airflow through the cyclone filter is determined. Based on the target intake airflow and filter tube design parameters, the target number of filter tubes is determined. Cyclone filter tubes of the target number are selected from the cyclone filter and set to an open state. This method can determine the target intake airflow through the cyclone filter during engine operation, determine the target number of filter tubes, select the target number of filter tubes, and set them to an open state. This increases the airflow velocity within the cyclone filter, thereby improving the impurity separation efficiency and extending the filter element life of the cyclone filter.

[0011] In one possible implementation, the engine structural parameter information includes engine displacement; determining the target intake airflow through the cyclone filter based on the engine structural parameter information, the engine speed, and the intake manifold pressure includes:

[0012] The engine displacement, the engine speed and the intake manifold pressure are multiplied together, and the result of the product is used as the characteristic intake flow rate.

[0013] The target intake flow rate through the cyclone filter is determined based on the characteristic intake flow rate.

[0014] The above method, wherein the engine structural parameter information includes engine displacement; determining the target intake flow rate through the cyclone filter based on the engine structural parameter information, engine speed, and intake manifold pressure includes: multiplying the engine displacement, engine speed, and intake manifold pressure, and using the product as a characteristic intake flow rate; determining the target intake flow rate through the cyclone filter based on the characteristic intake flow rate, can quickly and accurately determine the target intake flow rate, reduce the computational load of the engine's intake filtration control process, further improve the impurity separation efficiency of the cyclone filter, and increase the filter element life of the cyclone filter.

[0015] In one possible implementation, the filter tube design parameter information includes the flow cross-sectional area of ​​the cyclone filter tube and the target inlet air velocity; determining the target number of filter tubes based on the target inlet air velocity and the filter tube design parameter information includes:

[0016] The target single-pipe flow rate is determined based on the flow cross-sectional area of ​​the cyclone filter tube and the target inlet air velocity.

[0017] The number of target filter tubes is determined based on the target intake flow rate and the target single-tube flow rate.

[0018] The above method, wherein the filter tube design parameter information includes the flow cross-sectional area of ​​the cyclone filter tube and the target intake air velocity; the step of determining the target number of filter tubes based on the target intake air velocity and the filter tube design parameter information includes: determining the target single-tube flow rate based on the flow cross-sectional area of ​​the cyclone filter tube and the target intake air velocity; and determining the target number of filter tubes based on the target intake air velocity and the target single-tube flow rate. In the above method, the target single-tube flow rate is determined based on the flow cross-sectional area and the target intake air velocity in the filter tube design parameter information. Different engines may have different flow cross-sectional areas, and even for the same engine, once the flow cross-sectional area is fixed, the target intake air velocity can be set differently, allowing for more flexible determination of the target number of filter tubes. This achieves a more efficient increase in the air velocity within the cyclone filter, thereby improving the impurity separation efficiency of the cyclone filter and extending the filter element life of the cyclone filter.

[0019] In one possible implementation, before determining the target intake airflow through the cyclone filter based on the engine structural parameter information, the engine speed, and the intake manifold pressure, the method further includes:

[0020] In response to the engine start command, all of the cyclone filter tubes are set to the open state;

[0021] Setting the target cyclone filter tube to the open state includes:

[0022] The target cyclone filter tube is set to the open state, while all non-target cyclone filter tubes are closed.

[0023] The above method, before determining the target intake flow rate through the cyclone filter based on the engine structural parameter information, the engine speed, and the intake manifold pressure, further includes: in response to the engine start command, setting all the cyclone filter tubes to an open state; setting the target cyclone filter tube to an open state includes: setting the target cyclone filter tube among the cyclone filter tubes to an open state, so that all non-target cyclone filter tubes except the target cyclone filter tube are closed.

[0024] This method, in response to the engine start command, sets all the cyclone filter tubes to the open state. After determining the target cyclone filter tube, it sets only the target cyclone filter tube to the open state, while closing all other non-target cyclone filter tubes. This achieves the following: when the engine starts, all the cyclone filter tubes are opened; after determining the target cyclone filter tube, only the target cyclone filter tube is set to the open state, while closing all other non-target cyclone filter tubes. This allows for more precise opening of the target cyclone filter tube, more effectively increasing the airflow rate within the cyclone filter, further improving the impurity separation efficiency of the cyclone filter, and extending the filter element life of the cyclone filter.

[0025] In one possible implementation, the operating parameter information further includes engine load rate; before determining the target intake airflow through the cyclone filter based on the engine structural parameter information, the engine speed, and the intake manifold pressure, the method further includes:

[0026] Based on the engine speed and the engine load rate, it is determined that the engine meets the preset stable state conditions; the stable state conditions indicate that the rate of change of engine speed does not exceed a preset first threshold and the rate of change of load rate does not exceed a preset second threshold.

[0027] The above method further includes engine load rate as an operating parameter information. Before determining the target intake airflow through the cyclone filter based on the engine structural parameter information, engine speed, and intake manifold pressure, it further includes: determining that the engine meets preset stable state conditions based on the engine speed and engine load rate. The stable state conditions characterize that the rate of change of engine speed does not exceed a preset first threshold, and the rate of change of load rate does not exceed a preset second threshold. In this method, the ECU identifies engine speed and load rate. If the rate of change of speed and load rate over time is less than the corresponding threshold, the engine is considered to be in a stable state that meets the stable state conditions. Based on this, the valve opening can be controlled to avoid the target intake airflow when the engine speed and load change drastically in a short period of time. This reduces redundant control of the intake filter and avoids the adverse effects caused by executing the engine's intake filter control when the engine speed and load change drastically in a short period of time. It also more effectively improves the airflow velocity in the cyclone filter, which can further improve the efficiency of impurity separation in the cyclone filter and increase the filter element life of the cyclone filter.

[0028] In one possible implementation, the method further includes:

[0029] If the engine is determined to meet a preset intake demand surge condition based on the engine speed and the engine load rate, then all the cyclone filter tubes are set to the open state; the intake demand surge condition indicates that the engine speed change rate exceeds a preset third threshold, or the load rate change rate exceeds a preset fourth threshold.

[0030] The above method can also set all cyclone filter tubes to the open state when the engine meets a preset intake demand surge condition based on the engine speed and engine load rate. The intake demand surge condition indicates that the rate of change of engine speed exceeds a preset third threshold, or the rate of change of load rate exceeds a preset fourth threshold. This method can avoid setting only some cyclone filter tubes to open when the engine meets the preset intake demand surge condition, thereby ensuring sufficient intake air supply when the engine is in a state that meets the intake demand surge condition, more effectively increasing the airflow velocity in the cyclone filter, further improving the impurity separation efficiency of the cyclone filter, increasing the filter element life of the cyclone filter, improving the user experience of the engine intake filtration control process, and improving the overall vehicle performance stability.

[0031] Secondly, embodiments of this application provide an intake air filtration control device for an engine, the engine including a cyclone filter; the cyclone filter includes a filter element and a plurality of cyclone filter tubes; the device includes:

[0032] The basic information acquisition unit is used to acquire engine operating parameter information and design parameter information; the design parameter information includes engine structural parameter information and filter pipe design parameter information; the operating parameter information includes engine speed and intake manifold pressure.

[0033] The target flow rate determination unit is used to determine the target intake flow rate through the cyclone filter based on the engine structural parameter information, the engine speed, and the intake manifold pressure.

[0034] The target tube number determination unit is used to determine the target number of filter tubes based on the target air intake flow rate and the filter tube design parameters.

[0035] The intake filter control unit is used to select the target number of cyclone filter tubes from the cyclone filter as target cyclone filter tubes, and set the target cyclone filter tubes to the open state.

[0036] In one possible implementation, the engine structural parameter information includes engine displacement; the target flow determination unit is specifically used for:

[0037] The engine displacement, the engine speed and the intake manifold pressure are multiplied together, and the result of the product is used as the characteristic intake flow rate.

[0038] The target intake flow rate through the cyclone filter is determined based on the characteristic intake flow rate.

[0039] In one possible implementation, the filter tube design parameter information includes the flow cross-sectional area of ​​the cyclone filter tube and the target inlet air velocity; the target tube number determination unit is specifically used for:

[0040] The target single-pipe flow rate is determined based on the flow cross-sectional area of ​​the cyclone filter tube and the target inlet air velocity.

[0041] The number of target filter tubes is determined based on the target intake flow rate and the target single-tube flow rate.

[0042] In one possible implementation, the device further includes a power-on filter tube control unit; the power-on filter tube control unit is configured to:

[0043] In response to the engine start command, all of the cyclone filter tubes are set to the open state;

[0044] The intake filter control unit is specifically used for:

[0045] After selecting the target number of cyclone filter tubes from the cyclone filter as the target cyclone filter tubes, the target cyclone filter tubes are set to the open state, while all non-target cyclone filter tubes are closed.

[0046] In one possible implementation, the operating parameter information further includes engine load rate; the target flow determination unit is further configured to:

[0047] Before determining the target intake flow rate through the cyclone filter based on the engine structural parameters, engine speed, and intake manifold pressure, the engine is determined to meet preset stable state conditions based on the engine speed and engine load rate; the stable state conditions indicate that the engine speed change rate does not exceed a preset first threshold and the load rate change rate does not exceed a preset second threshold.

[0048] In one possible implementation, the apparatus further includes a demand surge adjustment unit; the demand surge adjustment unit is used for:

[0049] If the engine is determined to meet a preset intake demand surge condition based on the engine speed and the engine load rate, then all the cyclone filter tubes are set to the open state; the intake demand surge condition indicates that the engine speed change rate exceeds a preset third threshold, or the load rate change rate exceeds a preset fourth threshold.

[0050] Thirdly, an electronic device is provided, including a processor and a memory, wherein the memory stores program code that, when executed by the processor, causes the processor to perform the steps of the engine intake filtration control method described above.

[0051] Fourthly, a computer-readable storage medium is provided, wherein a computer program is stored therein, and when the computer program is executed by a processor, it implements the intake air filtration control method for an engine according to any one of the above-mentioned methods.

[0052] The technical effects of any of the implementation methods in the second to fourth aspects can be found in the technical effects of the implementation method in the first aspect, and will not be repeated here. Attached Figure Description

[0053] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0054] Figure 1 A schematic flowchart of an engine intake air filtration control method provided in an embodiment of this application;

[0055] Figure 2 A flowchart illustrating the determination of the target number of filter tubes in an intake air filtration control method for an engine, provided in an embodiment of this application;

[0056] Figure 3 A schematic flowchart of another engine intake filtration control method provided in an embodiment of this application;

[0057] Figure 4 One of the structural schematic diagrams of an engine intake air filtration control device provided in an embodiment of this application;

[0058] Figure 5 A second schematic diagram of the structure of an engine intake air filtration control device provided in an embodiment of this application;

[0059] Figure 6A third schematic diagram of the structure of an engine intake air filtration control device provided in an embodiment of this application;

[0060] Figure 7 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application. Detailed Implementation

[0061] To make the objectives, technical solutions, and advantages of this application clearer, the application will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0062] The following explanations of some terms used in the embodiments of this application are provided to facilitate understanding by those skilled in the art.

[0063] (1) ECU (Electronic Control Unit): In this embodiment of the application, ECU refers to the marine engine electronic control unit, which is a controller that performs calculations, processes and judges based on the signals input by various sensors, and then outputs commands to control the actuator.

[0064] (2) Load: Load is the ratio of the actual torque of the engine at the operating speed to the maximum torque, that is, the ratio of the torque generated at a certain engine speed with the throttle partially open to the maximum torque generated when the throttle is fully open.

[0065] (3) Test bench: Test equipment used for engine calibration, used to calibrate various performance parameters of the engine, including engine speed, engine torque, fuel injection quantity and emissions.

[0066] To improve the efficiency of impurity separation in an engine's cyclone filter, this application provides an engine intake air filtration control method, device, electronic equipment, and medium. To better understand the technical solution provided in this application, the basic principles of the solution are briefly explained below.

[0067] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0068] The technical solutions provided by the embodiments of this application are described below with reference to the accompanying drawings.

[0069] Currently, cyclone filters are increasingly widely used in engine intake systems. A cyclone filter has a cyclone filter tube placed in front of the paper filter element. It uses the centrifugal force generated by the cyclone to remove larger particulate impurities from the intake air, thus improving filter element lifespan.

[0070] In related technologies, the filtration efficiency of cyclone filters is designed based on the rated flow rate. At low loads, the air velocity is low, resulting in poor impurity separation efficiency of the cyclone filter.

[0071] In view of this, embodiments of this application provide an intake air filtration control method, device, electronic device, and medium for an engine. During engine operation, the method acquires engine operating parameter information and design parameter information. The design parameter information includes engine structural parameter information and filter tube design parameter information. The operating parameter information includes engine speed and intake manifold pressure. Based on the engine structural parameter information, engine speed, and intake manifold pressure, the method determines the target intake airflow through a cyclone filter. Based on the target intake airflow and filter tube design parameter information, the method determines the target number of filter tubes. The method selects the target number of cyclone filter tubes from the cyclone filter as target cyclone filter tubes and sets them to an open state. This method can determine the target intake airflow through the cyclone filter during engine operation, determine the target number of filter tubes, select the target number of cyclone filter tubes from the cyclone filter as target cyclone filter tubes, and set them to an open state, thereby increasing the airflow velocity within the cyclone filter and improving the efficiency of impurity separation in the cyclone filter, thus extending the filter element life of the cyclone filter.

[0072] The preferred embodiments of this application are described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit this application. Furthermore, the embodiments and features described in the embodiments of this application can be combined with each other without conflict.

[0073] The intake air filtration control method for an engine provided in this application will be further explained below. This application provides an intake air filtration control method for an engine, the engine including a cyclone filter; the cyclone filter includes a filter element and multiple cyclone filter tubes; as shown... Figure 1 As shown, it includes the following steps:

[0074] S101, acquire engine operating parameter information and design parameter information; design parameter information includes engine structural parameter information and filter pipe design parameter information; operating parameter information includes engine speed and intake manifold pressure.

[0075] Specifically, during engine operation, the ECU acquires engine operating parameter information and design parameter information; the design parameter information includes engine structural parameter information and filter pipe design parameter information; the operating parameter information includes engine speed and intake manifold pressure.

[0076] For example, the engine's operating parameter information Run_Pa_info and design parameter information Des_Pa_info are obtained; the design parameter information Run_Pa_info includes engine structural parameter information E_co_Pa and filter tube design parameter information P_De_Pa; the operating parameter information Run_Pa_info includes engine speed speed_E and intake manifold pressure Pres_I.

[0077] S102 determines the target intake airflow through the cyclone filter based on engine structural parameters, engine speed, and intake manifold pressure.

[0078] In practice, the ECU determines the target intake airflow through the cyclone filter based on engine structural parameters, engine speed, and intake manifold pressure.

[0079] In some embodiments, the engine structural parameter information includes engine displacement; in step S102, the process of determining the target intake airflow through the cyclone filter based on the engine structural parameter information, engine speed, and intake manifold pressure can be implemented through the following steps:

[0080] A01 is the product of engine displacement, engine speed and intake manifold pressure, and the result of the product is used as the characteristic intake flow rate.

[0081] Engine displacement refers to the total displacement of the vehicle's engines.

[0082] For example, the engine structural parameter information E_co_Pa includes the engine displacement Swept; the engine displacement Swept, engine speed speed_E, and intake manifold pressure Pres_I are multiplied, and the result of the product is used as the characteristic intake flow rate charac_q. That is, the characteristic intake flow rate charac_q can be calculated by the following formula:

[0083] charac_q=Swept×speed_E×Pres_I,

[0084] Where charac_q represents the characteristic intake flow rate;

[0085] Swept indicates engine displacement;

[0086] speed_E represents the engine speed;

[0087] Pres_I represents the intake manifold pressure.

[0088] A02, based on the characteristic intake flow rate, determine the target intake flow rate through the cyclone filter.

[0089] In one possible embodiment, determining the target intake flow rate through the cyclone filter based on the characteristic intake flow rate is done by directly using the characteristic intake flow rate as the target intake flow rate through the cyclone filter.

[0090] In some embodiments, the target intake airflow can be obtained by the following formula:

[0091] q0 = charac_q,

[0092] in,

[0093] q0 represents the target intake airflow;

[0094] charac_q represents the characteristic intake airflow rate.

[0095] In some other embodiments, the target airflow through the cyclone filter is determined based on the characteristic airflow. Alternatively, the characteristic airflow can be multiplied by a preset coefficient greater than 1, and the result of the multiplication can be used as the target airflow through the cyclone filter.

[0096] In some embodiments of this application, the preset coefficients can be obtained by calibrating the engine through bench testing.

[0097] In one possible implementation, the operating parameter information also includes engine load rate; before determining the target intake airflow through the cyclone filter based on engine structural parameter information, engine speed, and intake manifold pressure, it also includes:

[0098] Based on engine speed and engine load rate, the engine is determined to meet preset steady-state conditions; the steady-state conditions characterize that the rate of change of engine speed does not exceed a preset first threshold and the rate of change of load rate does not exceed a preset second threshold.

[0099] In the embodiments of this application, the first threshold and the second threshold may be the same or different, and this application does not make specific limitations on this.

[0100] In practice, the operating parameter information also includes engine load rate; the ECU determines that the engine meets the preset stable state conditions based on engine speed and engine load rate; the stable state conditions indicate that the rate of change of engine speed does not exceed the preset first threshold and the rate of change of load rate does not exceed the preset second threshold; if the engine meets the preset stable state conditions, the target intake flow rate through the cyclone filter is determined based on the engine structural parameter information, engine speed and intake manifold pressure.

[0101] For example, the values ​​of both the first threshold and the second threshold can be set to 0.05.

[0102] S103, determine the target number of filter tubes based on the target intake flow rate and filter tube design parameters.

[0103] In one possible implementation, the filter tube design parameters include the flow cross-sectional area of ​​the cyclone filter tube and the target inlet air velocity; in step S103, the target number of filter tubes is determined based on the target inlet air flow rate and the filter tube design parameters, such as... Figure 2 As shown, this can be achieved through the following steps:

[0104] S201, determine the target single-pipe flow rate based on the flow cross-sectional area of ​​the cyclone filter tube and the target inlet air velocity.

[0105] Specifically, the ECU determines the target single-pipe flow rate based on the flow cross-sectional area of ​​the cyclone filter tube and the target intake air velocity.

[0106] In one possible implementation, the target single-pipe flow rate is determined based on the flow cross-sectional area of ​​the cyclone filter tube and the target inlet air velocity by multiplying the flow cross-sectional area of ​​the cyclone filter tube and the target inlet air velocity, and the result of the multiplication is taken as the target single-pipe flow rate.

[0107] The target single-pipe flow rate can be calculated using the following formula:

[0108] q_s = v × s,

[0109] in,

[0110] q_s represents the target single-pipe flow rate;

[0111] v represents the target inlet airflow velocity of the cyclone filter tube;

[0112] s represents the flow cross-sectional area of ​​the cyclone filter tube.

[0113] S202, determine the target number of filter tubes based on the target intake flow rate and the target single-tube flow rate.

[0114] Specifically, the target number of filter tubes is determined based on the target intake flow rate and the target single-tube flow rate.

[0115] In one possible implementation, the target number of filter tubes is determined based on the target intake flow rate and the target single-tube flow rate. Specifically, the target intake flow rate is divided by the target single-tube flow rate; the result of the division is rounded according to a preset rule, and the rounded result is used as the target number of filter tubes.

[0116] In some embodiments of this application, the specific number of target filter tubes can be calculated using the following formula:

[0117] N = TR(q0 / q_s),

[0118] Where N represents the target number of filter tubes;

[0119] q0 represents the target intake airflow;

[0120] q_s represents the target single-pipe flow rate;

[0121] / indicates a division operation;

[0122] TR() indicates that the integer part is being rounded down.

[0123] S104: Select the target number of cyclone filter tubes from the cyclone filter, use them as target cyclone filter tubes, and set the target cyclone filter tubes to the open state.

[0124] In practice, the ECU selects the target number of cyclone filter tubes from the cyclone filter as the target cyclone filter tubes and sets the target cyclone filter tubes to the open state.

[0125] For example, assume the engine includes a cyclone filter; the cyclone filter includes a filter and M cyclone filter tubes; after determining the target number of filter tubes N, the ECU selects N cyclone filter tubes from the M cyclone filters as target cyclone filter tubes and sets the target cyclone filter tubes to the open state. Here, N is less than or equal to M.

[0126] In some embodiments of this application, each cyclone filter tube is equipped with a corresponding valve, which is used to control the opening and closing of the corresponding cyclone filter tube.

[0127] In one possible implementation, before determining the target intake airflow through the cyclone filter based on engine structural parameter information, engine speed, and intake manifold pressure in step S102, the following is also performed:

[0128] In response to the engine start command, all cyclone filter tubes are set to the open state;

[0129] Step S104, the process of setting the target cyclone filter tube to the open state, specifically involves:

[0130] Set the target cyclone filter tube in the cyclone filter tube to the open state, so that all non-target cyclone filter tubes are closed.

[0131] In one possible implementation, the engine intake air filtration control method further includes:

[0132] If the engine speed and engine load rate determine that the engine meets the preset intake demand surge condition, then all cyclone filter pipes are set to the open state; the intake demand surge condition indicates that the engine speed change rate exceeds the preset third threshold, or the load rate change rate exceeds the preset fourth threshold.

[0133] In the embodiments of this application, the third threshold and the fourth threshold may be the same or different; the values ​​of the first threshold, the second threshold, the third threshold and the fourth threshold may be exactly the same, different from each other, or partially the same; this application does not make specific limitations in this regard.

[0134] In practice, the third threshold is usually greater than or equal to the first threshold, and the fourth threshold is greater than or equal to the second threshold.

[0135] In some embodiments of this application, the third threshold and the fourth threshold can both be set to a value between 0.03 and 0.1.

[0136] In one embodiment of this application, the third threshold is the same as the first threshold, and the fourth threshold is the same as the second threshold. This embodiment enables precise and efficient state control of the cyclone filter tube.

[0137] The above Figure 1The engine intake air filtration control method shown involves acquiring engine operating parameters and design parameters during engine operation. The design parameters include engine structural parameters and filter tube design parameters. The operating parameters include engine speed and intake manifold pressure. Based on the engine structural parameters, engine speed, and intake manifold pressure, the target intake airflow through the cyclone filter is determined. Based on the target intake airflow and filter tube design parameters, the target number of filter tubes is determined. Cyclone filter tubes of the target number are selected from the cyclone filter and set to an open state. This method can determine the target intake airflow through the cyclone filter during engine operation, determine the target number of filter tubes, select the target number of filter tubes, and set them to an open state. This increases the airflow velocity within the cyclone filter, thereby improving the efficiency of impurity separation and extending the filter element life.

[0138] The following describes another intake air filtration control method for an engine provided by an embodiment of this application. The engine includes a cyclone filter; the cyclone filter includes a filter element and multiple cyclone filter tubes; the intake air filtration control method for this engine, as follows... Figure 3 As shown, it includes the following steps:

[0139] S301, in response to the engine start command, sets all cyclone filter tubes to the open state.

[0140] S302, obtains engine operating parameter information and design parameter information.

[0141] The design parameters include engine structural parameters and filter pipe design parameters; the operating parameters include engine speed, intake manifold pressure, and engine load rate; and the filter pipe design parameters include the flow cross-sectional area of ​​the cyclone filter pipe and the target intake air velocity.

[0142] S303, based on engine speed and engine load rate, determine that the engine meets the preset stable state conditions; the stable state conditions characterize that the rate of change of engine speed does not exceed the preset first threshold and the rate of change of load rate does not exceed the preset second threshold.

[0143] In one embodiment of this application, based on engine speed and engine load rate, it is determined whether the engine meets preset stable state conditions. If yes, steps S304 to S308 are executed based on the acquired engine operating parameter information and design parameter information; if no, steps S304 to S308 are not executed based on the acquired engine operating parameter information and design parameter information.

[0144] S304 determines the target intake airflow through the cyclone filter based on engine structural parameters, engine speed, and intake manifold pressure.

[0145] In one optional embodiment, the engine structural parameter information includes engine displacement; based on the engine structural parameter information, engine speed and intake manifold pressure, the target intake flow rate through the cyclone filter is determined, specifically by multiplying the engine displacement, engine speed and intake manifold pressure, and using the result of the product as the characteristic intake flow rate; based on the characteristic intake flow rate, the target intake flow rate through the cyclone filter is determined.

[0146] S305, determine the target single-pipe flow rate based on the flow cross-sectional area of ​​the cyclone filter tube and the target inlet air velocity.

[0147] S306, determine the target number of filter tubes based on the target intake flow rate and the target single-tube flow rate.

[0148] S307: Select the target number of cyclone filter tubes from the cyclone filter as the target cyclone filter tubes, and set the target cyclone filter tubes to the open state.

[0149] Specifically, the process of setting the target cyclone filter tube to the open state involves setting the target cyclone filter tube in the cyclone filter tube to the open state, while closing all non-target cyclone filter tubes except the target cyclone filter tube.

[0150] S308, if the engine meets the preset intake demand surge condition based on engine speed and engine load rate, then all cyclone filter pipes are set to open; the intake demand surge condition indicates that the engine speed change rate exceeds the preset third threshold, or the load rate change rate exceeds the preset fourth threshold.

[0151] The process of controlling the engine's intake air filtration in steps S301 to S308 can be performed with reference to the specific process in the aforementioned embodiments, and will not be repeated here.

[0152] Based on the same inventive concept, this application also provides an intake air filtration control device for an engine. The engine includes a cyclone filter; the cyclone filter includes a filter element and multiple cyclone filter tubes; as shown... Figure 4 As shown, the device includes: a basic information acquisition unit 401, a target flow rate determination unit 402, a target pipe count determination unit 403, and an intake filter pipe control unit 404. Wherein:

[0153] The basic information acquisition unit 401 is used to acquire engine operating parameter information and design parameter information; the design parameter information includes engine structural parameter information and filter pipe design parameter information; the operating parameter information includes engine speed and intake manifold pressure.

[0154] The target flow determination unit 402 is used to determine the target intake flow through the cyclone filter based on engine structural parameter information, engine speed and intake manifold pressure.

[0155] The target tube number determination unit 403 is used to determine the target number of filter tubes based on the target air intake flow rate and filter tube design parameters.

[0156] The intake filter control unit 404 is used to select a target number of cyclone filter tubes from the cyclone filter as target cyclone filter tubes, and set the target cyclone filter tubes to the open state.

[0157] In one possible implementation, the engine structural parameter information includes the engine displacement; the target flow determination unit 402 is specifically used for:

[0158] The engine displacement, engine speed and intake manifold pressure are multiplied together, and the result of the product is used as the characteristic intake flow rate.

[0159] Determine the target intake flow rate through the cyclone filter based on the characteristic intake flow rate.

[0160] In one possible implementation, the filter tube design parameters include the flow cross-sectional area of ​​the cyclone filter tube and the target inlet air velocity; the target tube number determination unit 403 is specifically used for:

[0161] Determine the target single-tube flow rate based on the cross-sectional area of ​​the cyclone filter tube and the target inlet air velocity;

[0162] Determine the target number of filter tubes based on the target intake flow rate and the target single-tube flow rate.

[0163] In one possible implementation, such as Figure 5 As shown, the device also includes a power-on filter tube control unit 501; the power-on filter tube control unit 501 is used for:

[0164] In response to the engine start command, all cyclone filter tubes are set to the open state;

[0165] Intake filter control unit 404 is specifically used for:

[0166] After selecting the target number of cyclone filter tubes from the cyclone filter as the target cyclone filter tubes, the target cyclone filter tubes are set to the open state, so that all non-target cyclone filter tubes are closed.

[0167] In one possible implementation, the operating parameter information also includes engine load rate; the target flow determination unit 402 is further used for:

[0168] Before determining the target intake flow rate through the cyclone filter based on engine structural parameters, engine speed, and intake manifold pressure, the engine is determined to meet preset steady-state conditions based on engine speed and engine load rate. The steady-state conditions characterize that the rate of change of engine speed does not exceed a preset first threshold and the rate of change of load rate does not exceed a preset second threshold.

[0169] In one possible implementation, such as Figure 6 As shown, the device also includes a demand surge adjustment unit 601; the demand surge adjustment unit 601 is used for:

[0170] If the engine speed and engine load rate determine that the engine meets the preset intake demand surge condition, then all cyclone filter pipes are set to the open state; the intake demand surge condition indicates that the engine speed change rate exceeds the preset third threshold, or the load rate change rate exceeds the preset fourth threshold.

[0171] Based on the same technical concept, this application also provides an electronic device, referring to... Figure 7 As shown, the electronic device is used to implement the methods described in the above-described method embodiments, for example, implementing... Figure 1 The method shown allows the electronic device to include a memory 701, a processor 702, an input unit 703, and a display panel 704.

[0172] The memory 701 stores computer programs executed by the processor 702. The memory 701 mainly includes a program storage area and a data storage area. The program storage area stores the operating system, applications required for at least one function, etc.; the data storage area stores data created based on the use of the electronic device, etc. The processor 702 can be a central processing unit (CPU) or a digital processing unit, etc. The input unit 703 can be used to acquire user input commands. The display panel 704 displays information input by the user or information provided to the user. In this embodiment, the display panel 704 is mainly used to display the display interfaces of various applications in the terminal device and the control entities displayed in each display interface. Optionally, the display panel 704 can be configured as a liquid crystal display (LCD) or an OLED (organic light-emitting diode), etc.

[0173] This application embodiment does not limit the specific connection medium between the memory 701, processor 702, input unit 703, and display panel 704 described above. This application embodiment... Figure 7The memory 701, processor 702, input unit 703, and display panel 704 are connected via a bus 707. The bus 707 is in... Figure 7 The connections between other components are shown in bold lines only and are not intended to be limiting. The 707 bus can be divided into address bus, data bus, control bus, etc. For ease of illustration, Figure 7 The bus is represented by a single thick line, but this does not mean that there is only one bus or one type of bus.

[0174] Memory 701 may be volatile memory, such as random-access memory (RAM); memory 701 may also be non-volatile memory, such as read-only memory, flash memory, hard disk drive (HDD), or solid-state drive (SSD); or memory 701 may be any other medium capable of carrying or storing desired program code in the form of instructions or data structures and accessible by a computer, but is not limited thereto. Memory 701 may be a combination of the above-described memories.

[0175] Processor 702 is used to invoke a computer program stored in memory 701 to execute as implemented. Figure 1 The example shown.

[0176] This application also provides a computer-readable storage medium storing computer-executable instructions required to execute the processor, including a program required to execute the processor.

[0177] In some possible implementations, various aspects of the engine intake filtration control method provided in this application can also be implemented as a program product, including program code. When the program product is run on a terminal device, the program code causes the terminal device to perform the steps of the engine intake filtration control method according to the various exemplary embodiments of this application described above. For example, an electronic device can perform the implementation as described above. Figure 1 The example shown.

[0178] The program product may employ any combination of one or more readable media. A readable medium may be a readable signal medium or a readable storage medium. A readable storage medium may be, for example—but not limited to—an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples (a non-exhaustive list) of readable storage media include: electrical connections having one or more wires, portable disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof.

[0179] The intake filter control program product for an engine according to embodiments of this application can be a portable compact disc read-only memory (CD-ROM) and include program code, and can run on a computing device. However, the program product of this application is not limited thereto. In this document, the readable storage medium can be any tangible medium that contains or stores a program that can be used by or in conjunction with an instruction execution system, apparatus, or device.

[0180] A readable signal medium may include a data signal propagated in baseband or as part of a carrier wave, carrying readable program code. This propagated data signal may take many forms, including—but not limited to—electromagnetic signals, optical signals, or any suitable combination thereof. A readable signal medium may also be any readable medium other than a readable storage medium, capable of sending, propagating, or transmitting a program for use by or in conjunction with an instruction execution system, apparatus, or device.

[0181] The program code contained on the readable medium may be transmitted using any suitable medium, including—but not limited to—wireless, wired, optical fiber, RF, or any suitable combination thereof.

[0182] Program code for performing the operations of this application can be written in any combination of one or more programming languages, including entity-oriented programming languages ​​such as Java and C++, and conventional procedural programming languages ​​such as C or similar languages. The program code can execute entirely on the user's computing device, partially on the user's computing device, as a standalone software package, partially on the user's computing device and partially on a remote computing device, or entirely on a remote computing device or server. In cases involving remote computing devices, the remote computing device can be connected to the user's computing device via any type of network—including a local area network (LAN) or a wide area network (WAN)—or can be connected to an external computing device (e.g., via the Internet using an Internet service provider).

[0183] It should be noted that although several units or sub-units of the device have been mentioned in the detailed description above, this division is merely exemplary and not mandatory. In fact, according to embodiments of this application, the features and functions of two or more units described above can be embodied in one unit. Conversely, the features and functions of one unit described above can be further divided and embodied by multiple units.

[0184] Furthermore, although the operations of the method of this application are described in a specific order in the accompanying drawings, this does not require or imply that these operations must be performed in that specific order, or that all the operations shown must be performed to achieve the desired result. Additionally or alternatively, certain steps may be omitted, multiple steps may be combined into one step, and / or one step may be broken down into multiple steps.

[0185] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0186] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable file processing device to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable file processing device, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0187] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable file processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0188] These computer program instructions can also be loaded onto a computer or other programmable document processing device to cause a series of operational steps to be performed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable device for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0189] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

[0190] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. An intake air filtration control method for an engine, characterized in that, The engine includes a cyclone filter; The cyclone filter includes a filter element and multiple cyclone filter tubes; the method includes: The engine's operating parameters and design parameters are obtained; the design parameters include engine structural parameters and filter pipe design parameters; the operating parameters include engine speed and intake manifold pressure. Based on the engine structural parameters, engine speed, and intake manifold pressure, determine the target intake airflow through the cyclone filter; The target number of filter tubes is determined based on the target air intake flow rate and the filter tube design parameters. Select the target number of cyclone filter tubes from the cyclone filter, and set the target cyclone filter tubes to the open state; The engine structural parameter information includes engine displacement; determining the target intake airflow through the cyclone filter based on the engine structural parameter information, engine speed, and intake manifold pressure includes: The engine displacement, the engine speed and the intake manifold pressure are multiplied together, and the result of the product is used as the characteristic intake flow rate. Based on the characteristic intake flow rate, the target intake flow rate through the cyclone filter is determined; The filter tube design parameters include the flow cross-sectional area and target inlet air velocity of the cyclone filter tube; determining the target number of filter tubes based on the target inlet air flow rate and the filter tube design parameters includes: The target single-pipe flow rate is determined based on the flow cross-sectional area of ​​the cyclone filter tube and the target inlet air velocity. The target number of filter tubes is determined based on the target intake flow rate and the target single-tube flow rate. Before determining the target intake airflow through the cyclone filter based on the engine structural parameters, engine speed, and intake manifold pressure, the method further includes: In response to the engine start command, all of the cyclone filter tubes are set to the open state; Setting the target cyclone filter tube to the open state includes: The target cyclone filter tube is set to the open state, while all non-target cyclone filter tubes are closed.

2. The method according to claim 1, characterized in that, The operating parameter information also includes engine load rate; before determining the target intake airflow through the cyclone filter based on the engine structural parameter information, engine speed, and intake manifold pressure, the process further includes: Based on the engine speed and the engine load rate, it is determined that the engine meets the preset stable state conditions; the stable state conditions indicate that the rate of change of engine speed does not exceed a preset first threshold and the rate of change of load rate does not exceed a preset second threshold.

3. The method according to claim 2, characterized in that, The method further includes: If the engine is determined to meet a preset intake demand surge condition based on the engine speed and the engine load rate, then all the cyclone filter tubes are set to the open state; the intake demand surge condition indicates that the engine speed change rate exceeds a preset third threshold, or the load rate change rate exceeds a preset fourth threshold.

4. An intake air filtration control device for an engine, characterized in that, The engine includes a cyclone filter; The cyclone filter includes a filter element and multiple cyclone filter tubes; the device includes: The basic information acquisition unit is used to acquire engine operating parameter information and design parameter information; the design parameter information includes engine structural parameter information and filter pipe design parameter information; the operating parameter information includes engine speed and intake manifold pressure. The target flow rate determination unit is used to determine the target intake flow rate through the cyclone filter based on the engine structural parameter information, the engine speed, and the intake manifold pressure. The target tube number determination unit is used to determine the target number of filter tubes based on the target air intake flow rate and the filter tube design parameters. The intake filter control unit is used to select the target number of cyclone filters from the cyclone filters as target cyclone filters, and set the target cyclone filters to the open state; The engine structural parameter information includes engine displacement; the target flow determination unit is specifically used for: The engine displacement, the engine speed and the intake manifold pressure are multiplied together, and the result of the product is used as the characteristic intake flow rate. Based on the characteristic intake flow rate, the target intake flow rate through the cyclone filter is determined; The filter tube design parameters include the flow cross-sectional area and target inlet air velocity of the cyclone filter tube; the target tube number determination unit is specifically used for: The target single-pipe flow rate is determined based on the flow cross-sectional area of ​​the cyclone filter tube and the target inlet air velocity. The number of target filter tubes is determined based on the target intake flow rate and the target single-tube flow rate. The device further includes a power-on filter tube control unit; the power-on filter tube control unit is used for: In response to the engine start command, all of the cyclone filter tubes are set to the open state; The intake filter control unit is specifically used for: After selecting the target number of cyclone filter tubes from the cyclone filter as the target cyclone filter tubes, the target cyclone filter tubes are set to the open state, while all non-target cyclone filter tubes are closed.

5. An electronic device, characterized in that, It includes a processor and a memory, wherein the memory stores program code that, when executed by the processor, causes the processor to perform the steps of the method according to any one of claims 1 to 3.

6. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, it implements the method according to any one of claims 1 to 3.

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