Supercharger protection method, device, equipment and medium

Abstract

The embodiment of the invention discloses a supercharger protection method, device and equipment and a medium. The method comprises the following steps: acquiring supercharger data, fuel injection quantity data and engine data of a vehicle; according to the supercharger data, the predicted supercharger rotating speed at the next moment is determined, and according to the predicted supercharger rotating speed, a preset rotating speed threshold value, the historical fuel injection quantity and the current fuel injection quantity, the first reference fuel injection rate increment at the next moment is determined; according to the engine data, the predicted engine temperature at the next moment is determined, and according to the predicted engine temperature, a preset temperature threshold value, the historical fuel injection quantity and the current fuel injection quantity, a second reference fuel injection rate increment at the next moment is determined; and according to the first reference fuel injection rate increment and the second reference fuel injection rate increment, the target fuel injection rate increment of the vehicle is determined, and a supercharger in the vehicle is controlled based on the target fuel injection rate increment. Damage to the supercharger is avoided, and the supercharger is protected.

Description

Technical Field

[0001] The embodiments of the present invention relate to the technical field of vehicle control, and in particular, to a supercharger protection method, device, equipment and medium. Background Art

[0002] The supercharger of a commercial vehicle diesel engine has the functions of improving power performance, increasing fuel economy, and reducing pollutants in emissions. It uses the high-temperature exhaust gas discharged from the engine's exhaust manifold to drive the turbine blades to rotate at high speed. The turbine and the compressor are connected by the same shaft. The kinetic energy of the turbine rotation drives the compressor to inhale and compress fresh air, which then enters the intercooler for cooling and finally enters the cylinder to participate in combustion and release energy. When the vehicle runs in a plateau area, due to the low air density, the supercharger needs to increase the rotational speed to compensate for oxygen, and at this time, the phenomenon of too high supercharger rotational speed or too high exhaust temperature is likely to occur, which is extremely easy to cause damage to the supercharger. Therefore, how to avoid damage to the supercharger is crucial. Summary of the Invention

[0003] The present invention provides a supercharger protection method, device, equipment and medium to avoid damage to the supercharger.

[0004] According to one aspect of the present invention, a supercharger protection method is provided, including:

[0005] Obtaining supercharger data, fuel injection quantity data and engine data of the vehicle; wherein, the fuel injection quantity data includes the historical fuel injection quantity at the previous moment and the current fuel injection quantity at the current moment;

[0006] Determining the predicted supercharger rotational speed at the next moment according to the supercharger data, and determining the first reference fuel injection rate increment at the next moment according to the predicted supercharger rotational speed, the preset rotational speed threshold, the historical fuel injection quantity and the current fuel injection quantity;

[0007] Determining the predicted engine temperature at the next moment according to the fuel injection quantity data, and determining the second reference fuel injection rate increment at the next moment according to the predicted engine temperature, the preset temperature threshold, the historical fuel injection quantity and the current fuel injection quantity;

[0008] Determining the target fuel injection rate increment of the vehicle according to the first reference fuel injection rate increment and the second reference fuel injection rate increment, and controlling the supercharger in the vehicle based on the target fuel injection rate increment.

[0009] According to another aspect of the present invention, a supercharger protection device is provided, including:

[0010] A data acquisition module, configured to obtain supercharger data, fuel injection quantity data and engine data of the vehicle; wherein, the fuel injection quantity data includes the historical fuel injection quantity at the previous moment and the current fuel injection quantity at the current moment;

[0011] A first reference increment determination module, configured to determine a predicted supercharger speed at the next moment according to the supercharger data, and determine a first reference fuel injection rate increment at the next moment according to the predicted supercharger speed, a preset speed threshold, the historical fuel injection amount, and the current fuel injection amount;

[0012] A second reference increment determination module, configured to determine a predicted engine temperature at the next moment according to the fuel injection amount data, and determine a second reference fuel injection rate increment at the next moment according to the predicted engine temperature, a preset temperature threshold, the historical fuel injection amount, and the current fuel injection amount;

[0013] A target increment determination module, configured to determine a target fuel injection rate increment of the vehicle according to the first reference fuel injection rate increment and the second reference fuel injection rate increment, and control a supercharger in the vehicle based on the target fuel injection rate increment.

[0014] According to another aspect of the present invention, there is provided an electronic device, including:

[0015] One or more processors;

[0016] A memory for storing one or more programs;

[0017] When the one or more programs are executed by the one or more processors, the one or more processors are enabled to execute any one of the supercharger protection methods provided by the embodiments of the present invention.

[0018] According to another aspect of the present invention, there is provided a computer-readable storage medium storing computer instructions for causing a processor to implement any one of the supercharger protection methods provided by the embodiments of the present invention when executed.

[0019] An embodiment of the present invention provides a supercharger protection solution, which obtains supercharger data, fuel injection quantity data, and engine data of a vehicle; wherein, the fuel injection quantity data includes the historical fuel injection quantity at the previous moment and the current fuel injection quantity at the current moment; according to the supercharger data, the predicted supercharger speed at the next moment is determined, and according to the predicted supercharger speed, a preset speed threshold, the historical fuel injection quantity, and the current fuel injection quantity, the first reference fuel injection rate increment at the next moment is determined; according to the engine data, the predicted engine temperature at the next moment is determined, and according to the predicted engine temperature, a preset temperature threshold, the historical fuel injection quantity, and the current fuel injection quantity, the second reference fuel injection rate increment at the next moment is determined; according to the first reference fuel injection rate increment and the second reference fuel injection rate increment, the target fuel injection rate increment of the vehicle is determined, and the supercharger in the vehicle is controlled based on the target fuel injection rate increment. In the above solution, by determining the first reference fuel injection rate increment at the next moment according to the supercharger data, determining the second reference fuel injection rate increment at the next moment according to the engine data, and determining the target fuel injection rate increment of the vehicle according to the first reference fuel injection rate increment and the second reference fuel injection rate increment, the target fuel injection rate increment is determined from two dimensions of the supercharger speed and the engine temperature, improving the accuracy and applicability of the determined target fuel injection rate increment, so that the supercharger can be controlled based on the target fuel injection rate increment at the next moment, avoiding damage to the supercharger and realizing the protection of the supercharger.

[0020] It should be understood that the content described in this part is not intended to identify the key or important features of the embodiments of the present invention, nor is it used to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0022] Figure 1 is a flowchart of a supercharger protection method provided in Embodiment 1 of the present invention;

[0023] Figure 2 is a flowchart of a supercharger protection method provided in Embodiment 2 of the present invention;

[0024] Figure 3 is a schematic structural diagram of a supercharger protection device provided in Embodiment 4 of the present invention;

[0025] Figure 4It is a schematic structural diagram of an electronic device for implementing a supercharger protection method provided in Embodiment 5 of the present invention. Detailed implementation manners

[0026] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present invention, rather than limiting the present invention. In addition, it should be noted that for the sake of description, only parts related to the present invention are shown in the drawings, rather than all the structures.

[0027] Embodiment 1

[0028] Figure 1 It is a flowchart of a supercharger protection method provided in Embodiment 1 of the present invention. This embodiment is applicable to the situation of protecting the supercharger when the vehicle is in a high-altitude area. This method can be executed by a supercharger protection device, and the device can be implemented in a software and / or hardware manner and can be configured in an electronic device carrying the supercharger protection function.

[0029] Refer to Figure 1 The supercharger protection method shown, includes:

[0030] S110. Obtain the supercharger data, fuel injection quantity data and engine data of the vehicle.

[0031] Among them, the supercharger data refers to the data associated with the supercharger in the vehicle. Exemplarily, the supercharger data may include the current supercharger pressure ratio and the current air flow rate. The current supercharger pressure ratio, that is, the pressure ratio before and after the compressor, refers to the pressure ratio at the front and rear outlets of the supercharger in the vehicle at the current moment. The current air flow rate refers to the intake air flow rate of the supercharger in the vehicle at the current moment.

[0032] Among them, the fuel injection quantity data refers to the fuel injection quantity data of the vehicle. Exemplarily, the fuel injection quantity data includes the historical fuel injection quantity at the previous moment and the current fuel injection quantity at the current moment. The historical fuel injection quantity refers to the fuel injection quantity of the vehicle at the previous moment based on the current moment. The current fuel injection quantity refers to the fuel injection quantity of the vehicle at the current moment.

[0033] Among them, the engine data refers to the data associated with the engine in the vehicle. Exemplarily, the engine data may include the current engine speed, the current intake air quantity and the current intake air temperature. The current engine speed refers to the speed of the engine at the current moment. The current intake air quantity refers to the intake air quantity of the engine at the current moment. The current intake air temperature refers to the intake air temperature of the engine at the current moment.

[0034] S120. Determine the predicted supercharger speed at the next moment according to the supercharger data, and determine the first reference fuel injection rate increment at the next moment according to the predicted supercharger speed, the preset speed threshold, the historical fuel injection quantity and the current fuel injection quantity.

[0035] Among them, predicting the supercharger speed refers to predicting the supercharger speed at the next moment based on the supercharger data at the current moment. In the embodiments of the present invention, no limitation is imposed on the magnitude of the preset speed threshold, which can be set by those skilled in the art according to experience or needs, or determined repeatedly through a large number of tests.

[0036] Among them, the first reference fuel injection rate increment refers to the increment of the fuel injection rate of the vehicle at the next moment predicted based on the supercharger speed with the current moment as the reference.

[0037] S130. Determine the predicted engine temperature at the next moment according to the engine data, and determine the second reference fuel injection rate increment at the next moment according to the predicted engine temperature, the preset temperature threshold, the historical fuel injection amount, and the current fuel injection amount.

[0038] Among them, the predicted engine temperature refers to the engine temperature at the next moment predicted based on the engine data at the current moment. In the embodiments of the present invention, no limitation is imposed on the magnitude of the preset temperature threshold, which can be set by those skilled in the art according to experience or needs, or determined repeatedly through a large number of tests.

[0039] Among them, the second reference fuel injection rate increment refers to the increment of the fuel injection rate of the vehicle at the next moment predicted based on the engine temperature with the current moment as the reference.

[0040] In an alternative embodiment, if the engine data includes the current engine speed, the current intake air volume, and the current intake air temperature, then determining the predicted engine temperature at the next moment according to the engine data includes: determining the initial exhaust gas temperature according to the current engine speed, the current intake air volume, the current intake air temperature, and the current fuel injection amount; and determining the predicted engine temperature at the next moment based on the second high-pass filter module according to the initial exhaust gas temperature.

[0041] Among them, the second high-pass filter module can be used to predict the predicted engine temperature at the next moment based on the change trend of the engine temperature. Exemplarily, the second high-pass filter module can be set in a temperature simulation model, and the temperature simulation model can be used to simulate the relationship between the engine temperature and the fuel injection rate increment and output the second reference fuel injection rate increment. Specifically, input the engine data into the temperature simulation model to perform the simulation of the corresponding relationship between the engine temperature and the fuel injection rate increment to obtain the second reference fuel injection rate increment.

[0042] Among them, the initial exhaust temperature refers to the exhaust temperature at the current moment determined according to the current engine speed, current intake air volume, current intake air temperature, and current fuel injection volume. The predicted engine temperature refers to the predicted engine temperature at the next moment obtained based on the initial exhaust temperature. The predicted engine temperature is the exhaust temperature of the engine at the next moment.

[0043] Exemplarily, the initial engine temperature can be calculated through an energy conservation model. The energy entering the engine is equal to the sum of the work done by the engine, exhaust energy, and loss energy. The model formula for the initial engine temperature is as follows:

[0044]

[0045] Among them, T exh represents the initial engine temperature; Q 燃料 represents the heat of the fuel, which is obtained by multiplying the fuel mass flow rate (i.e., the current fuel injection volume) by the calorific value; Q 进气 represents the heat of the air entering the engine, which is obtained by multiplying the mass flow rate of the intake air (i.e., the current intake air volume), the intake air temperature (i.e., the current intake air temperature), and the enthalpy value; W represents the work done by the engine, which is calculated based on a preset engine work formula according to the current engine speed, current intake air volume, current intake air temperature, and current fuel injection volume; M 排气 represents the exhaust mass flow rate, which is calculated based on the current fuel injection volume and current intake air volume; η represents the coefficient between the highest exhaust temperature and the actual exhaust temperature, that is, the exhaust energy utilization efficiency, which can be a constant or calculated based on the current engine speed, current intake air volume, current intake air temperature, and current fuel injection volume. The preset engine work formula can be used to determine the work done by the engine.

[0046] Furthermore, due to the inertial delay of the engine temperature, to reduce the delay, a second high-pass filter module is added to predict the engine temperature at the next moment, that is, the initial engine temperature is input into the second high-pass filter module to obtain the predicted engine temperature.

[0047] It can be understood that through the second high-pass filter module, according to the initial exhaust temperature, the predicted engine temperature at the next moment is determined, improving the accuracy of the determined predicted engine temperature.

[0048] In an alternative embodiment, determining a second reference fuel injection rate increment at the next moment based on the predicted engine temperature, a preset temperature threshold, the historical fuel injection amount, and the current fuel injection amount includes: taking the difference between the predicted engine temperature and the preset temperature threshold as a temperature difference value, and determining a corresponding fuel injection temperature coefficient according to the temperature difference value and a preset temperature coefficient correspondence; determining a predicted temperature fuel injection amount corresponding to the predicted engine temperature, and determining a second initial fuel injection rate increment according to the predicted temperature fuel injection amount, the historical fuel injection amount, and the current fuel injection amount; and determining the second reference fuel injection rate increment according to the second initial fuel injection rate increment and the fuel injection temperature coefficient.

[0049] Among them, in the embodiments of the present invention, the magnitude of the preset temperature threshold is not limited in any way, and it can be set by those skilled in the art according to experience or needs, or determined through a large number of repeated tests. The temperature difference value refers to the difference between the preset temperature threshold and the predicted engine temperature.

[0050] Among them, the temperature coefficient correspondence refers to a pre-set correspondence between the temperature difference value and the temperature coefficient. Exemplarily, the temperature coefficient correspondence can be presented in the form of a curve graph. The fuel injection temperature coefficient refers to the temperature coefficient corresponding to the temperature difference value in the temperature coefficient correspondence. The fuel injection temperature coefficient can be used to limit the fuel injection rate increment predicted based on the engine temperature.

[0051] Among them, the predicted temperature fuel injection amount refers to the predicted fuel injection amount determined based on the predicted engine temperature. Exemplarily, the correspondence between different engine temperatures and fuel injection amounts can be calibrated in advance, and in the embodiments of the present invention, the fuel injection amount corresponding to the predicted engine temperature in the foregoing correspondence is used as the predicted temperature fuel injection amount.

[0052] Among them, the second initial fuel injection rate increment refers to the original fuel injection rate increment predicted at the next moment according to the predicted temperature fuel injection amount, the historical fuel injection amount, and the current fuel injection amount. The second reference fuel injection rate increment is the actually predicted fuel injection rate increment obtained after updating the second initial fuel injection rate increment based on the fuel injection temperature coefficient.

[0053] Specifically, the product of the second initial fuel injection rate increment and the fuel injection temperature coefficient is taken as the second reference fuel injection rate increment.

[0054] Exemplarily, determine the fuel injection temperature coefficient based on the difference (i.e., temperature difference value) between the engine temperature at the next moment (i.e., predicted engine temperature) and the engine temperature limit value (i.e., preset temperature threshold); use the predicted temperature fuel injection amount corresponding to the predicted engine temperature at the next moment, the current fuel injection amount at the current moment, the historical fuel injection amounts, and the time difference between two adjacent moments to calculate the increment of the fuel injection rate (i.e., the second initial fuel injection rate increment). Since the temperature simulation model period is too short and the fuel injection rate increment fluctuates violently, in order to alleviate the severe jitter of the data, a second-order linear differentiator is selected to eliminate noise, and the second initial fuel injection rate increment is updated to obtain the updated second initial fuel injection rate increment; multiply the updated second initial fuel injection rate increment by the fuel injection temperature coefficient to obtain the second reference fuel injection rate increment.

[0055] It can be understood that by introducing the fuel injection temperature coefficient and determining the second reference fuel injection rate increment based on the second initial fuel injection rate increment and the fuel injection temperature coefficient, the limitation of the second initial fuel injection rate increment is realized, and the accuracy and applicability of the determined second reference fuel injection rate increment are improved.

[0056] S140. Determine the target fuel injection rate increment of the vehicle according to the first reference fuel injection rate increment and the second reference fuel injection rate increment, and control the operation of the supercharger in the vehicle at the next moment based on the target fuel injection rate increment.

[0057] Among them, the target fuel injection rate increment refers to the actual fuel injection rate increment of the vehicle at the next moment.

[0058] Specifically, based on the target fuel injection rate increment, control the operation of the supercharger in the vehicle at the next moment to protect the supercharger.

[0059] In an alternative embodiment, determining the target fuel injection rate increment of the vehicle according to the first reference fuel injection rate increment and the second reference fuel injection rate increment includes: determining the basic fuel injection rate increment from the first reference fuel injection rate increment and the second reference fuel injection rate increment, and determining the target fuel injection rate increment of the vehicle according to the preset fuel injection rate increment interval and the basic fuel injection rate increment.

[0060] Among them, take the smaller value of the first reference fuel injection rate increment and the second reference fuel injection rate increment as the basic fuel injection rate increment. The present invention embodiment does not make any limitation on the setting of the fuel injection rate increment interval, which can be set by those skilled in the art according to experience or needs, or determined repeatedly through a large number of tests.

[0061] Exemplarily, determine whether the basic fuel injection rate increment is within the fuel injection rate increment interval. If it is, take the basic fuel injection rate increment as the target fuel injection rate increment; if not, take the upper limit value of the fuel injection rate increment interval as the target fuel injection rate increment.

[0062] Exemplarily, select the smaller limit value of the injection rate increase calculated by the rotational speed limit and the temperature limit (i.e., use the smaller reference injection rate increment between the first reference injection rate increment and the second reference injection rate increment as the base injection rate increment); limit the final injection rate increment through an upper and lower limit module to obtain the final injection rate increment (i.e., determine the target injection rate increment of the vehicle according to the preset injection rate increment range and the base injection rate increment).

[0063] It can be understood that by introducing the injection rate increment range to limit the base injection rate increment, the applicability and accuracy of the determined target injection rate increment are further improved.

[0064] The embodiment of the present invention provides a supercharger protection scheme, by obtaining the supercharger data, fuel injection quantity data and engine data of the vehicle; wherein, the fuel injection quantity data includes the historical fuel injection quantity at the previous moment and the current fuel injection quantity at the current moment; according to the supercharger data, determine the predicted supercharger speed at the next moment, and according to the predicted supercharger speed, preset speed threshold, historical fuel injection quantity and current fuel injection quantity, determine the first reference injection rate increment at the next moment; according to the engine data, determine the predicted engine temperature at the next moment, and according to the predicted engine temperature, preset temperature threshold, historical fuel injection quantity and current fuel injection quantity, determine the second reference injection rate increment at the next moment; according to the first reference injection rate increment and the second reference injection rate increment, determine the target injection rate increment of the vehicle, and control the supercharger in the vehicle based on the target injection rate increment. The above scheme, by determining the first reference injection rate increment at the next moment according to the supercharger data, determining the second reference injection rate increment at the next moment according to the engine data, and determining the target injection rate increment of the vehicle according to the first reference injection rate increment and the second reference injection rate increment, realizes determining the target injection rate increment from two dimensions of the rotational speed of the supercharger and the temperature of the engine, improves the accuracy and applicability of the determined target injection rate increment, so as to control the supercharger based on the target injection rate increment at the next moment, avoid damaging the supercharger, and realize the protection of the supercharger.

[0065] Embodiment 2

[0066] Figure 2The figure is a flowchart of a supercharger protection method provided in the second embodiment of the present invention. Based on the above embodiments, further, the operation of "determining the predicted supercharger speed at the next moment according to the supercharger data, and determining the first reference fuel injection rate increment at the next moment according to the predicted supercharger speed, the preset speed threshold, the historical fuel injection amount, and the current fuel injection amount" is refined into "determining the initial supercharger speed at the current moment according to the supercharger data, and determining the predicted supercharger speed at the next moment according to the initial supercharger speed, the current ambient temperature, and the current air pressure; taking the difference between the predicted supercharger speed and the preset speed threshold as the speed difference value, and determining the corresponding fuel injection speed coefficient according to the speed difference value and the preset speed coefficient correspondence relationship; determining the predicted fuel injection amount corresponding to the predicted supercharger speed, and determining the first initial fuel injection rate increment according to the predicted fuel injection amount, the historical fuel injection amount, and the current fuel injection amount; determining the first reference fuel injection rate increment according to the first initial fuel injection rate increment and the fuel injection speed coefficient", so as to improve the determination mechanism of the first reference fuel injection rate increment. It should be noted that for the parts not detailed in the embodiments of the present invention, reference can be made to the descriptions of other embodiments.

[0067] See Figure 2 The supercharger protection method shown includes:

[0068] S210. Obtain the supercharger data, fuel injection amount data, and engine data of the vehicle.

[0069] Among them, the fuel injection amount data includes the historical fuel injection amount at the previous moment and the current fuel injection amount at the current moment.

[0070] S220. Determine the initial supercharger speed at the current moment according to the supercharger data, and determine the predicted supercharger speed at the next moment according to the initial supercharger speed, the current ambient temperature, and the current air pressure.

[0071] Among them, the initial supercharger speed refers to the theoretically determined supercharger speed based on the current supercharger pressure ratio and the current air flow. The current ambient temperature refers to the external ambient temperature at the current moment. The current air pressure refers to the atmospheric pressure at the current moment.

[0072] In an alternative embodiment, if the supercharger data includes the current supercharger pressure ratio and the current air flow rate, then based on the supercharger data, the initial supercharger speed at the current moment is determined, and based on the initial supercharger speed, the current ambient temperature, and the current air pressure, the predicted supercharger speed at the next moment is determined, including: determining the initial supercharger speed at the current moment according to the current supercharger pressure ratio, the current air flow rate, and the preset corresponding relationship between the supercharger speed; obtaining the current ambient temperature and the current air pressure, and determining the current ambient compensation coefficient corresponding to the current ambient temperature and the current air pressure compensation coefficient corresponding to the current air pressure; determining the target supercharger speed at the current moment according to the initial supercharger speed, the current ambient compensation coefficient, and the current air pressure compensation coefficient; and based on the first high-pass filter module, determining the predicted supercharger speed at the next moment according to the target supercharger speed.

[0073] Among them, the corresponding relationship between the supercharger speed refers to the pre-set corresponding relationship among the supercharger pressure ratio, the air flow rate, and the supercharger speed. The supercharger speed corresponding to the current supercharger pressure ratio and the current air flow rate in the corresponding relationship between the supercharger speed is used as the initial supercharger speed.

[0074] Among them, the current ambient compensation coefficient refers to the coefficient for compensating the initial supercharger speed for the environment. Exemplarily, based on the pre-set corresponding relationship between the ambient temperature and the temperature compensation coefficient, the temperature compensation coefficient corresponding to the current ambient temperature is used as the current ambient compensation coefficient.

[0075] Among them, the current air pressure compensation coefficient refers to the coefficient for compensating the initial supercharger speed for the air pressure. Exemplarily, based on the pre-set corresponding relationship between the atmospheric pressure and the air pressure compensation coefficient, the air pressure compensation coefficient corresponding to the current air pressure is used as the current air pressure compensation coefficient.

[0076] Among them, the target supercharger speed refers to the speed obtained after compensating the initial supercharger speed for the environment and the air pressure.

[0077] Among them, the first high-pass filter module can be used to predict the predicted supercharger speed at the next moment based on the change trend of the supercharger speed. Exemplarily, the first high-pass filter module can be set in the speed simulation model, and the speed simulation model can be used to simulate the relationship between the supercharger speed and the increment of the fuel injection rate and output the first reference fuel injection rate increment. Specifically, the supercharger data is input into the speed simulation model, and the simulation of the corresponding relationship between the supercharger speed and the increment of the fuel injection rate is performed to obtain the first reference fuel injection rate increment.

[0078] Exemplarily, the product of the current ambient compensation coefficient and the initial supercharger speed is used as the current ambient compensation speed; the product of the current air pressure compensation coefficient and the initial supercharger speed is used as the current air pressure compensation speed; the sum of the current ambient compensation speed, the current air pressure compensation speed and the initial supercharger speed is used as the target supercharger speed.

[0079] Among them, the current ambient compensation speed refers to the speed for compensating the initial supercharger speed for the ambient conditions. The current air pressure compensation speed refers to the speed for compensating the initial supercharger speed for the air pressure.

[0080] Exemplarily, using the pressure ratio before and after the compressor (i.e., the current supercharger pressure ratio) and the air flow rate (i.e., the current air flow rate), the supercharger speed (i.e., the initial supercharger speed) can be calculated by looking up a two-dimensional table. At the same time, considering the correction of the speed by temperature and pressure, the target supercharger speed is obtained; due to the inertia delay of the supercharger, in order to reduce the delay, a first high-pass filter module is added to predict the rapidly changing supercharger speed, that is, the target supercharger speed is input into the first high-pass filter module to obtain the predicted supercharger speed.

[0081] It can be understood that by introducing the current ambient compensation coefficient and the current air pressure compensation coefficient, the initial supercharger speed is compensated for the ambient conditions and air pressure to obtain the target supercharger speed, which improves the accuracy of the determined target supercharger speed, and further improves the accuracy of the predicted supercharger speed determined based on the target supercharger speed.

[0082] S230. The difference between the predicted supercharger speed and the preset speed threshold is used as the speed difference value, and according to the corresponding relationship between the speed difference value and the preset speed coefficient, the corresponding fuel injection speed coefficient is determined.

[0083] Among them, in the embodiments of the present invention, the size of the preset speed threshold is not limited in any way, and it can be set by those skilled in the art according to experience or needs, or determined repeatedly through a large number of tests. The speed difference value refers to the difference between the preset speed threshold and the predicted supercharger speed.

[0084] Among them, the speed coefficient corresponding relationship refers to the pre-set corresponding relationship between the speed difference value and the speed coefficient. Exemplarily, the speed coefficient corresponding relationship can be presented in the form of a curve graph. The fuel injection speed coefficient refers to the speed coefficient corresponding to the speed difference value in the speed coefficient corresponding relationship. The fuel injection speed coefficient can be used to limit the fuel injection rate increment predicted based on the supercharger speed.

[0085] S240. Determine the predicted fuel injection amount corresponding to the predicted supercharger speed, and determine the first initial fuel injection rate increment according to the predicted fuel injection amount, the historical fuel injection amount and the current fuel injection amount.

[0086] Among them, the predicted rotational speed fuel injection quantity refers to the predicted fuel injection quantity determined based on the predicted supercharger rotational speed. Exemplarily, the corresponding relationship between different supercharger rotational speeds and fuel injection quantities can be pre-calibrated. In the embodiments of the present invention, the fuel injection quantity corresponding to the predicted supercharger rotational speed in the foregoing corresponding relationship is used as the predicted rotational speed fuel injection quantity.

[0087] Among them, the first initial fuel injection rate increment refers to the original fuel injection rate increment predicted for the next moment based on the predicted rotational speed fuel injection quantity, the historical fuel injection quantity, and the current fuel injection quantity. The first reference fuel injection rate increment is the actually predicted fuel injection rate increment obtained after updating the first initial fuel injection rate increment based on the fuel injection rotational speed coefficient.

[0088] S250. Determine the first reference fuel injection rate increment according to the first initial fuel injection rate increment and the fuel injection rotational speed coefficient.

[0089] Specifically, the product of the first initial fuel injection rate increment and the fuel injection rotational speed coefficient is used as the first reference fuel injection rate increment.

[0090] Exemplarily, the fuel injection rotational speed coefficient is determined according to the difference between the supercharger rotational speed at the next moment (i.e., the predicted supercharger rotational speed) and the supercharger rotational speed limit value (i.e., the preset rotational speed threshold) (i.e., the rotational speed difference value); the predicted rotational speed fuel injection quantity corresponding to the predicted supercharger rotational speed at the next moment, the current fuel injection quantity at the current moment, the historical fuel injection quantity, and the time difference between two adjacent moments are used to calculate the increment of the fuel injection rate (i.e., the first initial fuel injection rate increment). Since the cycle of the rotational speed simulation model is too short and the fluctuation of the fuel injection rate increment is severe, a second-order linear differentiator is selected to eliminate noise and update the first initial fuel injection rate increment to obtain the updated first initial fuel injection rate increment; the updated first initial fuel injection rate increment is multiplied by the fuel injection rotational speed coefficient to obtain the first reference fuel injection rate increment.

[0091] S260. Determine the predicted engine temperature at the next moment according to the engine data, and determine the second reference fuel injection rate increment at the next moment according to the predicted engine temperature, the preset temperature threshold, the historical fuel injection quantity, and the current fuel injection quantity.

[0092] S270. Determine the target fuel injection rate increment of the vehicle according to the first reference fuel injection rate increment and the second reference fuel injection rate increment, and control the supercharger in the vehicle based on the target fuel injection rate increment.

[0093] An embodiment of the present invention provides a supercharger protection solution. By determining the predicted supercharger speed at the next moment based on the supercharger data, and determining the first reference fuel injection rate increment operation at the next moment according to the predicted supercharger speed, the preset speed threshold, the historical fuel injection amount, and the current fuel injection amount, it is refined to determine the initial supercharger speed at the current moment based on the supercharger data, and determine the predicted supercharger speed at the next moment according to the initial supercharger speed, the current ambient temperature, and the current air pressure; taking the difference between the predicted supercharger speed and the preset speed threshold as the speed difference value, and determining the corresponding fuel injection speed coefficient according to the speed difference value and the preset speed coefficient correspondence relationship; determining the predicted fuel injection amount corresponding to the predicted supercharger speed, and determining the first initial fuel injection rate increment according to the predicted fuel injection amount, the historical fuel injection amount, and the current fuel injection amount; determining the first reference fuel injection rate increment according to the first initial fuel injection rate increment and the fuel injection speed coefficient, which improves the determination mechanism of the first reference fuel injection rate increment. In the above solution, by introducing the fuel injection speed coefficient and determining the first reference fuel injection rate increment based on the first initial fuel injection rate increment and the fuel injection speed coefficient, the limitation of the first initial fuel injection rate increment is realized, and the accuracy and applicability of the determined first reference fuel injection rate increment are improved.

[0094] Embodiment III

[0095] On the basis of the above embodiment, an optional example is provided in an embodiment of the present invention. For parts not described in detail in the embodiment of the present invention, reference may be made to the descriptions of other embodiments.

[0096] In the prior art, the protection of the supercharger strongly depends on the supercharger speed sensor. For vehicles without a supercharger speed sensor, predictive protection cannot be performed, and there is a lack of protection against the over-temperature situation of the supercharger. A new control method needs to be proposed to protect the supercharger of vehicles in plateau areas based on the existing vehicle signals. An embodiment of the present invention proposes a protection strategy for the supercharger in plateau areas to prevent supercharger failures and improve the engine life.

[0097] Exemplarily, an embodiment of the present invention relates to the field of commercial vehicle control technology, specifically a protection strategy for the supercharger of a commercial vehicle operating in plateau areas. The embodiment of the present invention aims to propose a prediction method based on a model for the supercharger speed signal and the supercharger temperature, and limit the increment of the fuel injection rate by predicting the supercharger speed and temperature at the next moment, so as to protect the supercharger.

[0098] Exemplarily, the technical solution provided by the embodiments of the present invention includes the following steps: Calculate the current speed of the supercharger (i.e., the target supercharger speed) based on the pressure ratio before and after the compressor and the air flow rate, and predict the speed of the supercharger at the next moment (i.e., the predicted supercharger speed); Determine the limiting coefficient (i.e., the fuel injection speed coefficient) based on the difference between the speed of the supercharger at the next moment (i.e., the predicted supercharger speed) and the supercharger speed limit (i.e., the preset speed threshold) (i.e., the speed difference value), and limit the increment of the fuel injection rate; Calculate the exhaust gas temperature (i.e., the initial exhaust gas temperature) according to the principle of energy conservation, and predict the engine temperature at the next moment (i.e., the predicted engine temperature); Determine the limiting coefficient (i.e., the fuel injection temperature coefficient) based on the difference between the engine temperature at the next moment (i.e., the predicted engine temperature) and the temperature limit (i.e., the preset temperature threshold) (i.e., the temperature difference value), and limit the increment of the fuel injection rate; Take the minimum value of the two limiting methods as the limit of the fuel injection change rate, that is, determine the target fuel injection rate increment.

[0099] The embodiments of the present invention propose an application method for predicting the sensor signal of the supercharger at the next moment based on a simulation model for a sensor signal; The embodiments of the present invention comprehensively consider various factors such as the supercharger speed and the engine temperature to limit the increase rate of the fuel injection amount.

[0100] Embodiment 4

[0101] Figure 3 It is a schematic structural diagram of a supercharger protection device provided by Embodiment 4 of the present invention. This embodiment is applicable to the situation of protecting the supercharger when the vehicle is in a plateau area. This method can be executed by the supercharger protection device, and the device can be implemented in a software and / or hardware manner and can be configured in an electronic device carrying the supercharger protection function.

[0102] As Figure 3 shown, the device includes: a data acquisition module 310, a first reference increment determination module 320, a second reference increment determination module 330, and a target increment determination module 340. Among them,

[0103] The data acquisition module 310 is used to acquire the supercharger data, fuel injection amount data, and engine data of the vehicle; Among them, the fuel injection amount data includes the historical fuel injection amount at the previous moment and the current fuel injection amount at the current moment;

[0104] The first reference increment determination module 320 is used to determine the predicted supercharger speed at the next moment according to the supercharger data, and determine the first reference fuel injection rate increment at the next moment according to the predicted supercharger speed, the preset speed threshold, the historical fuel injection amount, and the current fuel injection amount;

[0105] The second reference increment determination module 330 is configured to determine the predicted engine temperature at the next moment according to the fuel injection amount data, and determine the second reference fuel injection rate increment at the next moment according to the predicted engine temperature, the preset temperature threshold, the historical fuel injection amount, and the current fuel injection amount;

[0106] The target increment determination module 340 is configured to determine the target fuel injection rate increment of the vehicle according to the first reference fuel injection rate increment and the second reference fuel injection rate increment, and control the supercharger in the vehicle based on the target fuel injection rate increment.

[0107] An embodiment of the present invention provides a supercharger protection solution, which obtains the supercharger data, fuel injection amount data, and engine data of the vehicle; wherein, the fuel injection amount data includes the historical fuel injection amount at the previous moment and the current fuel injection amount at the current moment; according to the supercharger data, determine the predicted supercharger speed at the next moment, and determine the first reference fuel injection rate increment at the next moment according to the predicted supercharger speed, the preset speed threshold, the historical fuel injection amount, and the current fuel injection amount; according to the engine data, determine the predicted engine temperature at the next moment, and determine the second reference fuel injection rate increment at the next moment according to the predicted engine temperature, the preset temperature threshold, the historical fuel injection amount, and the current fuel injection amount; according to the first reference fuel injection rate increment and the second reference fuel injection rate increment, determine the target fuel injection rate increment of the vehicle, and control the supercharger in the vehicle based on the target fuel injection rate increment. In the above solution, by determining the first reference fuel injection rate increment at the next moment according to the supercharger data, determining the second reference fuel injection rate increment at the next moment according to the engine data, and determining the target fuel injection rate increment of the vehicle according to the first reference fuel injection rate increment and the second reference fuel injection rate increment, the target fuel injection rate increment is determined from two dimensions of the supercharger speed and the engine temperature, improving the accuracy and applicability of the determined target fuel injection rate increment, so as to control the supercharger based on the target fuel injection rate increment at the next moment, avoiding damage to the supercharger and realizing the protection of the supercharger.

[0108] Optionally, the first reference increment determination module 320 includes:

[0109] The predicted speed determination unit is configured to determine the initial supercharger speed at the current moment according to the supercharger data, and determine the predicted supercharger speed at the next moment according to the initial supercharger speed, the current ambient temperature, and the current air pressure;

[0110] The speed coefficient determination unit is configured to use the difference between the predicted supercharger speed and the preset speed threshold as the speed difference value, and determine the corresponding fuel injection speed coefficient according to the speed difference value and the preset speed coefficient correspondence;

[0111] The first initial increment determination unit is configured to determine a predicted fuel injection amount corresponding to the predicted supercharger speed, and determine a first initial fuel injection rate increment according to the predicted fuel injection amount, the historical fuel injection amount, and the current fuel injection amount.

[0112] The first reference increment determination unit is configured to determine a first reference fuel injection rate increment according to the first initial fuel injection rate increment and the fuel injection speed coefficient.

[0113] Optionally, if the supercharger data includes the current supercharger pressure ratio and the current air flow rate, the predicted speed determination unit is specifically configured to:

[0114] Determine an initial supercharger speed at the current moment according to the current supercharger pressure ratio, the current air flow rate, and a preset supercharger speed correspondence relationship.

[0115] Obtain the current ambient temperature and the current air pressure, and determine the current ambient compensation coefficient corresponding to the current ambient temperature and the current air pressure compensation coefficient corresponding to the current air pressure.

[0116] Determine a target supercharger speed at the current moment according to the initial supercharger speed, the current ambient compensation coefficient, and the current air pressure compensation coefficient.

[0117] Based on a first high-pass filter module, determine a predicted supercharger speed at the next moment according to the target supercharger speed.

[0118] Optionally, the second reference increment determination module 330 includes:

[0119] The temperature coefficient determination unit is configured to use the difference between the predicted engine temperature and the preset temperature threshold as a temperature difference value, and determine a corresponding fuel injection temperature coefficient according to the temperature difference value and a preset temperature coefficient correspondence relationship.

[0120] The second initial increment determination unit is configured to determine a predicted fuel injection amount corresponding to the predicted engine temperature, and determine a second initial fuel injection rate increment according to the predicted fuel injection amount, the historical fuel injection amount, and the current fuel injection amount.

[0121] The second reference increment determination unit is configured to determine a second reference fuel injection rate increment according to the second initial fuel injection rate increment and the fuel injection temperature coefficient.

[0122] Optionally, if the engine data includes the current engine speed, the current intake air amount, and the current intake air temperature, the second reference increment determination module 330 includes:

[0123] An initial exhaust gas temperature determination unit for determining an initial exhaust gas temperature according to the current engine speed, the current intake air volume, the current intake air temperature, and the current fuel injection volume;

[0124] A predicted engine temperature determination unit for determining a predicted engine temperature at the next moment based on a second high-pass filter module according to the initial exhaust gas temperature.

[0125] Optionally, the target increment determination module 340 includes:

[0126] A target fuel injection increment determination unit for determining a basic fuel injection rate increment from the first reference fuel injection rate increment and the second reference fuel injection rate increment, and determining a target fuel injection rate increment of the vehicle according to a preset fuel injection rate increment range and the basic fuel injection rate increment.

[0127] The supercharger protection device provided by the embodiment of the present invention can execute the supercharger protection method provided by any embodiment of the present invention, and has function modules and beneficial effects corresponding to executing each supercharger protection method.

[0128] In the technical solution of the present invention, the collection, storage, use, processing, transmission, provision, and disclosure of supercharger data, fuel injection volume data, engine data, etc. comply with the provisions of relevant laws and regulations and do not violate public order and good customs.

[0129] Embodiment Five

[0130] Figure 4 It is a schematic structural diagram of an electronic device for implementing a supercharger protection method provided by Embodiment Five of the present invention. The electronic device 410 is intended to represent various forms of digital computers, such as, a laptop computer, a desktop computer, a workbench, a personal digital assistant, a server, a blade server, a mainframe computer, and other suitable computers. The electronic device can also represent various forms of mobile devices, such as, a personal digital processor, a cellular phone, a smart phone, a wearable device (such as a helmet, glasses, a watch, etc.) and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely examples and are not intended to limit the implementation of the present invention described herein and / or claimed.

[0131] Such as Figure 4As shown, the electronic device 410 includes at least one processor 411 and a memory communicatively connected to the at least one processor 411, such as a read-only memory (ROM) 412, a random access memory (RAM) 413, etc. The memory stores a computer program executable by the at least one processor. The processor 411 can execute various appropriate actions and processes according to the computer program stored in the read-only memory (ROM) 412 or the computer program loaded from the storage unit 418 into the random access memory (RAM) 413. In the RAM 413, various programs and data required for the operation of the electronic device 410 can also be stored. The processor 411, the ROM 412, and the RAM 413 are connected to each other via a bus 414. An input / output (I / O) interface 415 is also connected to the bus 414.

[0132] Multiple components in the electronic device 410 are connected to the I / O interface 415, including: an input unit 416, such as a keyboard, a mouse, etc.; an output unit 417, such as various types of displays, speakers, etc.; a storage unit 418, such as a disk, an optical disc, etc.; and a communication unit 419, such as a network card, a modem, a wireless communication transceiver, etc. The communication unit 419 allows the electronic device 410 to exchange information / data with other devices via a computer network such as the Internet and / or various telecommunication networks.

[0133] The processor 411 can be various general-purpose and / or special-purpose processing components with processing and computing capabilities. Some examples of the processor 411 include but are not limited to a central processing unit (CPU), a graphics processing unit (GPU), various dedicated artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any appropriate processor, controller, microcontroller, etc. The processor 411 executes the various methods and processes described above, such as the supercharger protection method.

[0134] In some embodiments, the supercharger protection method can be implemented as a computer program tangibly embodied in a computer-readable storage medium, such as the storage unit 418. In some embodiments, part or all of the computer program can be loaded and / or installed onto the electronic device 410 via the ROM 412 and / or the communication unit 419. When the computer program is loaded into the RAM 413 and executed by the processor 411, one or more steps of the supercharger protection method described above can be executed. Alternatively, in other embodiments, the processor 411 can be configured to execute the supercharger protection method by any other appropriate means (such as by means of firmware).

[0135] The various embodiments of the systems and techniques described above in this specification can be implemented in digital electronic circuitry, integrated circuit systems, field programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), application specific standard products (ASSPs), systems on a chip (SOCs), complex programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various embodiments can include: being implemented in one or more computer programs that are executable and / or interpretable on a programmable system including at least one programmable processor, which may be a special-purpose or general-purpose programmable processor that receives data and instructions from, and transmits data and instructions to, a storage system, at least one input device, and at least one output device.

[0136] The computer program for implementing the methods of the present invention can be written in any combination of one or more programming languages. These computer programs can be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus, such that the computer programs, when executed by the processor, cause the functions / operations specified in the flowchart and / or block diagram to be implemented. The computer program can be executed entirely on the machine, partly on the machine, as a stand-alone software package partly on the machine and partly on a remote machine or entirely on the remote machine or server.

[0137] In the context of the present invention, a computer-readable storage medium can be a tangible medium that can contain, or store a computer program for use by or in connection with an instruction execution system, apparatus, or device. The computer-readable storage medium can include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination of the foregoing. Alternatively, the computer-readable storage medium can be a machine-readable signal medium. More specific examples of a machine-readable storage medium would include an electrical connection based on one or more wires, a portable computer diskette, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or Flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0138] To provide interaction with a user, the systems and techniques described herein can be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user; and a keyboard and a pointing device (e.g., a mouse or a trackball) through which the user can provide input to the electronic device. Other kinds of devices can also be used to provide interaction with the user; for example, the feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including acoustic input, voice input, or tactile input).

[0139] The systems and techniques described herein can be implemented in a computing system including backend components (e.g., as a data server), or a computing system including middleware components (e.g., an application server), or a computing system including frontend components (e.g., a user computer having a graphical user interface or a web browser through which the user can interact with an implementation of the systems and techniques described herein), or a computing system including any combination of such backend components, middleware components, or frontend components. The components of the system can be interconnected by digital data communication in any form or medium (e.g., a communication network). Examples of communication networks include: local area network (LAN), wide area network (WAN), blockchain network, and the Internet.

[0140] A computing system can include a client and a server. The client and the server are generally far apart from each other and typically interact through a communication network. The relationship between the client and the server is created by computer programs running on the respective computers and having a client-server relationship with each other. The server can be a cloud server, also known as a cloud computing server or a cloud host, which is a host product in the cloud computing service system and solves the defects of difficult management and weak business scalability existing in traditional physical hosts and VPS services.

[0141] It should be understood that the various forms of processes shown above can be used, with steps reordered, added, or deleted. For example, the steps recited in the present invention can be executed in parallel, sequentially, or in a different order, as long as the desired results of the technical solution of the present invention can be achieved, and no limitation is imposed herein.

[0142] The above specific embodiments do not constitute a limitation on the protection scope of the present invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A supercharger protection method, characterized in that, Including: Obtain the supercharger data, fuel injection quantity data, and engine data of the vehicle; wherein, the fuel injection quantity data includes the historical fuel injection quantity at the previous moment and the current fuel injection quantity at the current moment; According to the supercharger data, determine the predicted supercharger speed at the next moment, and according to the predicted supercharger speed, the preset speed threshold, the historical fuel injection quantity, and the current fuel injection quantity, determine the first reference fuel injection rate increment at the next moment; According to the fuel injection quantity data, determine the predicted engine temperature at the next moment, and according to the predicted engine temperature, the preset temperature threshold, the historical fuel injection quantity, and the current fuel injection quantity, determine the second reference fuel injection rate increment at the next moment; According to the first reference fuel injection rate increment and the second reference fuel injection rate increment, determine the target fuel injection rate increment of the vehicle, and control the supercharger in the vehicle based on the target fuel injection rate increment.

2. The method according to claim 1, wherein The step of according to the supercharger data, determining the predicted supercharger speed at the next moment, and according to the predicted supercharger speed, the preset speed threshold, the historical fuel injection quantity, and the current fuel injection quantity, determining the first reference fuel injection rate increment at the next moment includes: According to the supercharger data, determine the initial supercharger speed at the current moment, and according to the initial supercharger speed, the current ambient temperature, and the current air pressure, determine the predicted supercharger speed at the next moment; Take the difference between the predicted supercharger speed and the preset speed threshold as the speed difference value, and according to the speed difference value and the preset speed coefficient correspondence, determine the corresponding fuel injection speed coefficient; Determine the predicted fuel injection quantity corresponding to the predicted supercharger speed, and according to the predicted fuel injection quantity, the historical fuel injection quantity, and the current fuel injection quantity, determine the first initial fuel injection rate increment; According to the first initial fuel injection rate increment and the fuel injection speed coefficient, determine the first reference fuel injection rate increment.

3. The method according to claim 2, characterized in that, If the supercharger data includes the current supercharger pressure ratio and the current air flow rate, then the step of according to the supercharger data, determining the initial supercharger speed at the current moment, and according to the initial supercharger speed, the current ambient temperature, and the current air pressure, determining the predicted supercharger speed at the next moment includes: According to the current supercharger pressure ratio, the current air flow rate, and the preset supercharger speed correspondence, determine the initial supercharger speed at the current moment; Obtain the current ambient temperature and the current air pressure, and determine the current ambient compensation coefficient corresponding to the current ambient temperature and the current air pressure compensation coefficient corresponding to the current air pressure; According to the initial supercharger speed, the current ambient compensation coefficient, and the current air pressure compensation coefficient, determine the target supercharger speed at the current moment; Based on the first high-pass filter module, according to the target supercharger speed, determine the predicted supercharger speed at the next moment.

4. The method according to claim 1, wherein The step of according to the predicted engine temperature, the preset temperature threshold, the historical fuel injection quantity, and the current fuel injection quantity, determining the second reference fuel injection rate increment at the next moment includes: Use the difference between the predicted engine temperature and the preset temperature threshold as the temperature difference value, and determine the corresponding fuel injection temperature coefficient according to the temperature difference value and the preset temperature coefficient correspondence relationship. Determine the predicted temperature fuel injection volume corresponding to the predicted engine temperature, and determine the second initial fuel injection rate increment according to the predicted temperature fuel injection volume, the historical fuel injection volume, and the current fuel injection volume. Determine the second reference fuel injection rate increment according to the second initial fuel injection rate increment and the fuel injection temperature coefficient.

5. The method according to claim 1, characterized in that, If the engine data includes the current engine speed, the current intake air volume, and the current intake air temperature, then determining the predicted engine temperature at the next moment according to the engine data includes: Determine the initial exhaust gas temperature according to the current engine speed, the current intake air volume, the current intake air temperature, and the current fuel injection volume. Based on the second high-pass filter module, determine the predicted engine temperature at the next moment according to the initial exhaust gas temperature.

6. The method according to claim 1, wherein The determining the target fuel injection rate increment of the vehicle according to the first reference fuel injection rate increment and the second reference fuel injection rate increment includes: Determine the basic fuel injection rate increment from the first reference fuel injection rate increment and the second reference fuel injection rate increment, and determine the target fuel injection rate increment of the vehicle according to the preset fuel injection rate increment range and the basic fuel injection rate increment.

7. A supercharger protection device, characterized in that, Includes: A data acquisition module for acquiring the supercharger data, the fuel injection volume data, and the engine data of the vehicle; wherein, the fuel injection volume data includes the historical fuel injection volume at the previous moment and the current fuel injection volume at the current moment. A first reference increment determination module for determining the predicted supercharger speed at the next moment according to the supercharger data, and determining the first reference fuel injection rate increment at the next moment according to the predicted supercharger speed, the preset speed threshold, the historical fuel injection volume, and the current fuel injection volume. A second reference increment determination module for determining the predicted engine temperature at the next moment according to the fuel injection volume data, and determining the second reference fuel injection rate increment at the next moment according to the predicted engine temperature, the preset temperature threshold, the historical fuel injection volume, and the current fuel injection volume. A target increment determination module for determining the target fuel injection rate increment of the vehicle according to the first reference fuel injection rate increment and the second reference fuel injection rate increment, and controlling the supercharger in the vehicle based on the target fuel injection rate increment.

8. The device according to claim 7, wherein the first reference increment determination module includes: A predicted speed determination unit for determining the initial supercharger speed at the current moment according to the supercharger data, and determining the predicted supercharger speed at the next moment according to the initial supercharger speed, the current ambient temperature, and the current air pressure. A speed coefficient determination unit for using the difference between the predicted supercharger speed and the preset speed threshold as the speed difference value, and determining the corresponding fuel injection speed coefficient according to the speed difference value and the preset speed coefficient correspondence relationship. A first initial increment determination unit for determining a predicted fuel injection amount corresponding to the predicted supercharger speed, and determining a first initial fuel injection rate increment according to the predicted fuel injection amount, the historical fuel injection amount, and the current fuel injection amount; A first reference increment determination unit for determining a first reference fuel injection rate increment according to the first initial fuel injection rate increment and the fuel injection speed coefficient.

9. An electronic device, characterized in that, Comprising: One or more processors; A memory for storing one or more programs; When the one or more programs are executed by the one or more processors, the one or more processors implement a supercharger protection method according to any one of claims 1-6.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the program is executed by a processor, it implements a supercharger protection method according to any one of claims 1-6.

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