Method, device and equipment for determining temperature of engine cylinder cover and storage medium

Abstract

The invention provides an engine cylinder cover temperature determining method, device and equipment and a storage medium, and the method comprises the steps that a working condition parameter value of a target engine is obtained, the working condition parameter value is used for representing the running state of the target engine in the running process and / or the parameter value of the running environment, the working condition parameter value is calculated, and the working condition parameter value is obtained; and the non-filtering target engine cylinder cover temperature is determined, filtering processing is conducted on the non-filtering target engine cylinder cover temperature, the filtered target engine cylinder cover temperature is obtained, and the filtered target engine cylinder cover temperature serves as the target engine cylinder cover temperature. Visibly, according to the method and the device, the working condition parameter value of the target engine, namely the parameter value of the running state and / or the running environment of the target engine in the running process, can be calculated, so that the target engine cylinder cover temperature can be accurately determined, and the accuracy of determining the engine cylinder cover temperature is improved.

Description

Technical Field

[0001] The present disclosure relates to the field of data processing, and in particular to a method, device, equipment and storage medium for determining the temperature of an engine cylinder head. Background Art

[0002] The engine cylinder head temperature is one of the important indicators of the engine's operating condition. Excessively high temperatures can easily cause engine components to overheat, damage seals, and increase the risk of wear and failure.

[0003] At present, the method for determining the engine cylinder head temperature is not accurate enough, such as estimating the engine cylinder head temperature based only on the engine water temperature. Therefore, how to accurately determine the engine cylinder head temperature has become a technical problem that needs to be solved urgently. Summary of the invention

[0004] In order to solve the above technical problems, the present disclosure provides a method for determining the engine cylinder head temperature. By performing calculations on the operating parameter values ​​of the target engine, that is, the parameter values ​​of the operating state and / or operating environment of the target engine during operation, the target engine cylinder head temperature can be accurately determined, thereby improving the accuracy of determining the engine cylinder head temperature.

[0005] In a first aspect, the present disclosure provides a method for determining a temperature of a cylinder head of an engine, the method comprising:

[0006] Acquire an operating parameter value of a target engine; wherein the operating parameter value is used to characterize a parameter value of an operating state and / or an operating environment of the target engine during operation;

[0007] Performing calculation processing on the operating condition parameter value to determine an unfiltered target engine cylinder head temperature;

[0008] The unfiltered target engine cylinder head temperature is filtered to obtain a filtered target engine cylinder head temperature, and the filtered target engine cylinder head temperature is used as the target engine cylinder head temperature.

[0009] In an optional implementation manner, the operating condition parameter values ​​include a load parameter value, an ignition angle parameter value, an exhaust gas recirculation rate parameter value, a vehicle speed ambient temperature parameter value, and an electronic water pump parameter value, and the operating condition parameter values ​​are processed to determine an unfiltered target engine cylinder head temperature, including:

[0010] Performing calculation processing on the load parameter value, the ignition angle parameter value, the exhaust gas recirculation rate parameter value and the vehicle speed ambient temperature parameter value to determine a first temperature; wherein the first temperature is used to represent an unfiltered target engine cylinder head temperature without adding an electronic water pump speed factor;

[0011] A difference between the first temperature and the electronic water pump parameter value is determined, and the difference is used as an unfiltered target engine cylinder head temperature.

[0012] In an optional implementation manner, the calculating and processing the load parameter value, the ignition angle parameter value, the exhaust gas recirculation rate parameter value, and the vehicle speed ambient temperature parameter value to determine the first temperature includes:

[0013] The first temperature is obtained by subtracting the exhaust gas recirculation rate parameter value and the vehicle speed ambient temperature parameter value from the sum of the load parameter value and the ignition angle parameter value.

[0014] In an optional implementation manner, the method further includes:

[0015] If it is determined that the target engine cylinder head temperature is greater than a first preset threshold, the electronic water pump is operated at a first speed; wherein the first speed is a maximum value of a speed corresponding to a temperature difference between the first temperature and a preset control temperature and a speed corresponding to a target engine coolant temperature, and the first speed is used to represent a speed of the electronic water pump corresponding to when the target engine cylinder head temperature is controlled at the preset control temperature;

[0016] Alternatively, if it is determined that the target engine cylinder head temperature is less than a second preset threshold, the electronic water pump is operated at a second speed; wherein the second speed is a speed corresponding to the target engine coolant temperature.

[0017] In an optional implementation manner, before the calculation and processing of the load parameter value, the ignition angle parameter value, the exhaust gas recirculation rate parameter value and the vehicle speed ambient temperature parameter value to determine the first temperature, the method further includes:

[0018] Obtain the speed of the target engine, the slow mean effective pressure of the target engine, the ignition angle of the target engine, the exhaust gas recirculation rate of the target engine, the exhaust gas recirculation coefficient of the target engine, the speed of the vehicle corresponding to the target engine, the ambient temperature of the target engine, the speed of the electronic water pump and the coolant temperature of the target engine.

[0019] In an optional implementation manner, filtering the unfiltered target engine cylinder head temperature to obtain a filtered target engine cylinder head temperature includes:

[0020] The unfiltered target engine cylinder head temperature is filtered by using an ascending filter and / or a descending filter to obtain a filtered target engine cylinder head temperature.

[0021] In an optional implementation manner, the method further includes:

[0022] If it is determined that the cylinder head temperature of the target engine is greater than a third preset threshold, the flow rate of the coolant passing through the radiator corresponding to the target engine is adjusted by controlling the opening of the water valve.

[0023] In a second aspect, the present disclosure provides a device for determining a temperature of a cylinder head of an engine, the device comprising:

[0024] A first acquisition module is used to acquire an operating condition parameter value of a target engine; wherein the operating condition parameter value is used to characterize a parameter value of an operating state and / or an operating environment of the target engine during operation;

[0025] A first determination module, configured to perform calculation processing on the operating condition parameter value to determine an unfiltered target engine cylinder head temperature;

[0026] The processing module is used to filter the unfiltered target engine cylinder head temperature to obtain a filtered target engine cylinder head temperature, and use the filtered target engine cylinder head temperature as the target engine cylinder head temperature.

[0027] In a third aspect, the present disclosure provides a device for determining the temperature of an engine cylinder head, comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the above method when executing the computer program.

[0028] In a fourth aspect, the present disclosure provides a computer-readable storage medium, wherein the computer-readable storage medium stores instructions, and when the instructions are executed on a terminal device, the terminal device implements the above method.

[0029] Compared with the prior art, the technical solution provided by the embodiments of the present disclosure has at least the following advantages:

[0030] The disclosed embodiment provides a method for determining the temperature of an engine cylinder head, obtaining an operating parameter value of a target engine, wherein the operating parameter value is used to characterize the operating state and / or operating environment parameter value of the target engine during operation, performing computational processing on the operating parameter value to determine an unfiltered target engine cylinder head temperature, performing filtering processing on the unfiltered target engine cylinder head temperature to obtain a filtered target engine cylinder head temperature, and using the filtered target engine cylinder head temperature as the target engine cylinder head temperature. It can be seen that the disclosed embodiment can accurately determine the target engine cylinder head temperature by performing computational processing on the operating parameter value of the target engine, i.e., the operating state and / or operating environment parameter value of the target engine during operation, thereby improving the accuracy of determining the engine cylinder head temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0032] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0033] Figure 1 A flow chart of a method for determining engine cylinder head temperature provided by an embodiment of the present disclosure;

[0034] Figure 2 A schematic diagram of the structure of a device for determining the temperature of an engine cylinder head provided in an embodiment of the present disclosure;

[0035] Figure 3 A schematic diagram of the structure of a device for determining the temperature of an engine cylinder head provided in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0036] In order to more clearly understand the above-mentioned objectives, features and advantages of the present disclosure, the scheme of the present disclosure will be further described below. It should be noted that the embodiments of the present disclosure and the features in the embodiments can be combined with each other without conflict.

[0037] In the following description, many specific details are set forth to facilitate a full understanding of the present disclosure, but the present disclosure may also be implemented in other ways different from those described herein; it is obvious that the embodiments in the specification are only part of the embodiments of the present disclosure, rather than all of the embodiments.

[0038] In order to accurately determine the target engine cylinder head temperature, the present disclosure provides a method for determining the engine cylinder head temperature.

[0039] Specifically, the operating condition parameter value of the target engine is obtained, wherein the operating condition parameter value is used to characterize the parameter value of the operating state and / or operating environment of the target engine during operation, the operating condition parameter value is processed by operation to determine the unfiltered target engine cylinder head temperature, the unfiltered target engine cylinder head temperature is filtered to obtain the filtered target engine cylinder head temperature, and the filtered target engine cylinder head temperature is used as the target engine cylinder head temperature. It can be seen that the embodiment of the present disclosure can accurately determine the target engine cylinder head temperature by processing the operating condition parameter value of the target engine, that is, the parameter value of the operating state and / or operating environment of the target engine during operation, thereby improving the accuracy of determining the engine cylinder head temperature.

[0040] Based on this, the embodiment of the present disclosure provides a method for determining the temperature of an engine cylinder head. Figure 1 , is a flow chart of a method for determining the temperature of an engine cylinder head provided by an embodiment of the present disclosure, the method comprising:

[0041] S101: Obtain operating parameter values ​​of a target engine.

[0042] The operating condition parameter value is used to characterize the parameter value of the operating state and / or operating environment of the target engine during operation.

[0043] In the embodiments of the present disclosure, the parameter value of the operating state of the target engine during operation refers to the actual parameter values ​​of the target engine at a specific moment or under specific working conditions, and the parameter value of the operating environment of the target engine during operation refers to the parameter value describing the environmental state of the target engine.

[0044] S102: Performing calculation processing on the operating condition parameter value to determine an unfiltered target engine cylinder head temperature.

[0045] Specifically, when the operating condition parameter values ​​include load parameter values, ignition angle parameter values, exhaust gas recirculation rate parameter values, vehicle speed ambient temperature parameter values ​​and electronic water pump parameter values, in an optional implementation, the load parameter values, ignition angle parameter values, exhaust gas recirculation rate parameter values ​​and vehicle speed ambient temperature parameter values ​​are obtained, and the load parameter values, ignition angle parameter values, exhaust gas recirculation rate parameter values ​​and vehicle speed ambient temperature parameter values ​​are calculated and processed to determine the first temperature.

[0046] The first temperature is used to represent an unfiltered target engine cylinder head temperature without adding an electronic water pump speed factor.

[0047] In the disclosed embodiment, the load parameter value can be determined based on the speed of the target engine and the slow mean effective pressure of the target engine. Specifically, the load parameter value corresponding to the speed of the target engine and the slow mean effective pressure of the target engine can be determined from the load effect curve table of the target engine according to the speed of the target engine and the slow mean effective pressure of the target engine.

[0048] In the disclosed embodiment, the ignition angle parameter value can be determined based on the speed of the target engine and the ignition angle of the target engine. Specifically, the ignition angle parameter value corresponding to the speed of the target engine and the ignition angle of the target engine can be determined from the ignition angle characteristic curve table of the target engine according to the speed of the target engine and the ignition angle of the target engine.

[0049] In the disclosed embodiment, the exhaust gas recirculation rate parameter value can be determined based on the exhaust gas recirculation rate of the target engine and the exhaust gas recirculation coefficient of the target engine. Specifically, the product of the exhaust gas recirculation rate of the target engine and the exhaust gas recirculation coefficient of the target engine can be used as the exhaust gas recirculation rate parameter value.

[0050] In the disclosed embodiment, the vehicle speed and ambient temperature parameter value can be determined based on the vehicle speed of the vehicle corresponding to the target engine and the ambient temperature of the target engine. Specifically, the vehicle speed and ambient temperature parameter value corresponding to the vehicle speed of the target engine and the ambient temperature of the target engine can be determined from the vehicle speed-ambient temperature table according to the vehicle speed of the vehicle corresponding to the target engine and the ambient temperature of the target engine.

[0051] Therefore, before obtaining the load parameter value, ignition angle parameter value, exhaust gas recirculation rate parameter value and vehicle speed and ambient temperature parameter value, it is also necessary to obtain the target engine speed, the target engine's slow mean effective pressure, the target engine's ignition angle, the target engine's exhaust gas recirculation rate, the target engine's exhaust gas recirculation coefficient, the speed of the vehicle corresponding to the target engine, the target engine's ambient temperature, the electronic water pump speed and the target engine coolant temperature.

[0052] Furthermore, after obtaining the load parameter value, the ignition angle parameter value, the exhaust gas recirculation rate parameter value and the vehicle speed ambient temperature parameter value, in an optional implementation, the first temperature can be obtained by subtracting the exhaust gas recirculation rate parameter value and the vehicle speed ambient temperature parameter value from the sum of the load parameter value and the ignition angle parameter value.

[0053] Specifically, the first temperature=load parameter value+ignition angle parameter value−exhaust gas recirculation rate parameter value−vehicle speed ambient temperature parameter value.

[0054] After obtaining the first temperature, in order to accurately obtain the target engine cylinder head temperature, in an optional implementation, the difference between the first temperature and the electronic water pump parameter value is determined, and the difference is used as the unfiltered target engine cylinder head temperature.

[0055] Specifically, the unfiltered target engine cylinder head temperature=the first temperature−the electronic water pump parameter value.

[0056] S103: Filtering the unfiltered target engine cylinder head temperature to obtain a filtered target engine cylinder head temperature, and using the filtered target engine cylinder head temperature as the target engine cylinder head temperature.

[0057] In the disclosed embodiment, after obtaining the unfiltered target engine cylinder head temperature, in order to further accurately obtain the target engine cylinder head temperature, it is also necessary to filter the unfiltered target engine cylinder head temperature, thereby obtaining the filtered target engine cylinder head temperature after filtering.

[0058] In an optional implementation, the unfiltered target engine cylinder head temperature may be filtered using an ascending filter and / or a descending filter to obtain a filtered target engine cylinder head temperature.

[0059] For ease of understanding, the description is made by taking ascending filtering as an example.

[0060] First, the filter coefficient is determined by using a calibration method. Specifically, by installing a thermocouple sensor at a preset position, the filtered target engine cylinder head temperature is made close to the measured value (i.e., the temperature measured by the thermocouple sensor), thereby determining the filter coefficient corresponding to the up-filter. Then, based on the filter coefficient corresponding to the up-filter and the unfiltered target engine cylinder head temperature, the filtered target engine cylinder head temperature is determined.

[0061] It should be noted that the method of filtering the unfiltered target engine cylinder head temperature using the descending filter is the same as the method of filtering the unfiltered target engine cylinder head temperature using the ascending filter mentioned above. For details, please refer to the method of filtering the unfiltered target engine cylinder head temperature using the ascending filter mentioned above.

[0062] In the disclosed embodiment, in order to improve the accuracy of the filtered target engine cylinder head temperature, the first filtered target engine cylinder head temperature obtained by filtering the unfiltered target engine cylinder head temperature using an ascending filter and the second filtered target engine cylinder head temperature obtained by filtering the unfiltered target engine cylinder head temperature using a descending filter can be used as the filtered target engine cylinder head temperature.

[0063] In addition, in order to increase the speed of the electronic water pump when the filtered target engine cylinder head temperature approaches a safety boundary, in an optional implementation, if it is determined that the target engine cylinder head temperature is greater than a first preset threshold, the electronic water pump is operated at a first speed.

[0064] Among them, the first speed is the speed corresponding to the temperature difference between the first temperature and the preset control temperature, and the maximum value of the speeds corresponding to the target engine coolant temperature. The first speed is used to characterize the corresponding electronic water pump speed when the target engine cylinder head temperature is controlled at the preset control temperature.

[0065] In the disclosed embodiment, the speed corresponding to the target engine coolant temperature can be determined based on the target engine coolant temperature from a correspondence between a preset engine coolant temperature and a speed of the electronic water pump.

[0066] In the embodiment of the present disclosure, the first preset threshold value may be determined based on component SPC (Statistical Process Control). Specifically, the embodiment of the present disclosure does not impose any limitation on the method for determining the first preset threshold value.

[0067] In the disclosed embodiment, if it is determined that the target engine cylinder head temperature is greater than the first preset threshold, it indicates that the target engine cylinder head temperature is too high, and the target engine cylinder head temperature can be reduced to the preset control temperature by increasing the speed of the electronic water pump.

[0068] Specifically, the first rotation speed=Max (the rotation speed corresponding to the temperature difference between the first temperature and the preset control temperature, the rotation speed corresponding to the target engine coolant temperature).

[0069] In the embodiment of the present disclosure, the preset control temperature may be the same as the first preset threshold value, or may be different from the first threshold value, and the embodiment of the present disclosure does not impose any limitation on this.

[0070] Specifically, taking an actual scenario as an example, it is assumed that the first preset threshold is 190° C. and the preset control temperature is 200° C.

[0071] Accordingly, when the target engine cylinder head temperature is greater than 190°C, the corresponding electronic water pump speed W1 (i.e., the speed corresponding to the temperature difference between the first temperature and the preset control temperature) and the speed W2 corresponding to the target engine coolant temperature are determined respectively when the target engine cylinder head temperature is controlled at 200°C. If W1 is greater than W2, W1 is used as the first speed to control the electronic water pump to operate at the first speed to achieve temperature protection for the target engine cylinder head.

[0072] It should be noted that since the preset control temperature of 200°C is different from the first preset threshold, the protection mode can be entered in advance (i.e., a mode of cooling the target engine cylinder head by increasing the speed of the electronic water pump). This ensures that during the temperature change of the target engine cylinder head, the entry and exit conditions of the protection mode are inconsistent, and avoids frequent entry and exit of the protection mode near the temperature critical value, so as to reduce unnecessary switching and adjustments and maintain the stability and reliability of the system.

[0073] Alternatively, if it is determined that the target engine cylinder head temperature is less than a second preset threshold, the electronic water pump is operated at a second speed.

[0074] The second rotational speed is a rotational speed corresponding to the target engine coolant temperature.

[0075] In the embodiment of the present disclosure, the second preset threshold may be the same as the first preset threshold, or may be different from the first threshold, and the embodiment of the present disclosure does not impose any limitation on this.

[0076] Continuing with the above first preset threshold being 190° C. and the preset control temperature being 200° C., it is assumed that the second preset threshold is 170° C.

[0077] Accordingly, when it is determined that the target engine cylinder head temperature is less than 170° C., the electronic water pump is operated at a rotation speed corresponding to the target engine coolant temperature to achieve temperature protection for the target engine cylinder head.

[0078] It should be noted that, since the second preset threshold value of 170° C. is different from the first preset threshold value, frequent entry and exit of the protection mode near the temperature critical value can also be avoided to reduce unnecessary switching and adjustment and maintain the stability and reliability of the system.

[0079] In addition, due to the embodiment of the present disclosure, the target engine cylinder head temperature can be accurately determined, and the electronic water pump speed is increased only when the target engine cylinder head temperature exceeds a preset threshold, thereby avoiding the situation where the speed is increased prematurely when the target engine cylinder head temperature does not exceed the first preset threshold due to transient operating conditions. It can be seen that the embodiment of the present disclosure avoids unnecessary energy waste, while ensuring the stability of the engine under transient conditions, and avoiding frequent electronic water pump speed adjustments caused by temperature fluctuations, thereby improving energy utilization efficiency.

[0080] Alternatively, if it is determined that the engine cylinder head is stable between the first threshold and the second threshold, the electronic water pump may be operated using the first speed.

[0081] It should be noted that if the temperature difference between the first temperature and the preset control temperature is a negative number, the difference is set to 0.

[0082] In addition, in order to save energy, in an optional implementation, if it is determined that the target engine cylinder head temperature is greater than a third preset threshold, the flow rate of the coolant through the radiator corresponding to the target engine is adjusted by controlling the opening of the water valve.

[0083] The third preset threshold can be set as needed, and the embodiment of the present disclosure does not impose any limitation on this.

[0084] In the disclosed embodiment, when it is determined that the cylinder head temperature of the target engine is greater than the third preset threshold, if the water valve is not fully open, the opening of the water valve can be increased to increase the flow of coolant through the radiator corresponding to the target engine, so that the electronic water pump can run at a low speed.

[0085] In the method for determining the engine cylinder head temperature provided by the present disclosure, the operating condition parameter value of the target engine is obtained, wherein the operating condition parameter value is used to characterize the parameter value of the operating state and / or operating environment of the target engine during operation, the operating condition parameter value is processed by operation to determine the unfiltered target engine cylinder head temperature, the unfiltered target engine cylinder head temperature is filtered to obtain the filtered target engine cylinder head temperature, and the filtered target engine cylinder head temperature is used as the target engine cylinder head temperature. It can be seen that the embodiment of the present disclosure can accurately determine the target engine cylinder head temperature by processing the operating condition parameter value of the target engine, that is, the parameter value of the operating state and / or operating environment of the target engine during operation, thereby improving the accuracy of determining the engine cylinder head temperature.

[0086] Based on the same inventive concept as the above embodiment, the embodiment of the present disclosure also provides a device for determining the temperature of an engine cylinder head, referring to Figure 2 , is a schematic diagram of a structure of a device for determining the temperature of an engine cylinder head provided by an embodiment of the present disclosure, wherein the device 200 for determining the temperature of an engine cylinder head comprises:

[0087] The first acquisition module 201 is used to acquire the operating condition parameter value of the target engine; wherein the operating condition parameter value is used to characterize the operating state and / or operating environment parameter value of the target engine during operation;

[0088] The first determination module 202 is used to perform calculation processing on the operating condition parameter value to determine an unfiltered target engine cylinder head temperature.

[0089] The processing module 203 is used to filter the unfiltered target engine cylinder head temperature to obtain a filtered target engine cylinder head temperature, and use the filtered target engine cylinder head temperature as the target engine cylinder head temperature.

[0090] In an optional implementation manner, the operating condition parameter value includes a load parameter value, an ignition angle parameter value, an exhaust gas recirculation rate parameter value, a vehicle speed ambient temperature parameter value, and an electronic water pump parameter value, and the first determination module 202 includes:

[0091] A first determination submodule is used to perform calculation processing on the load parameter value, the ignition angle parameter value, the exhaust gas recirculation rate parameter value and the vehicle speed ambient temperature parameter value to determine a first temperature; wherein the first temperature is used to represent an unfiltered target engine cylinder head temperature without adding an electronic water pump speed factor;

[0092] The second determination submodule is used to determine a difference between the first temperature and the electronic water pump parameter value, and use the difference as an unfiltered target engine cylinder head temperature.

[0093] In an optional implementation manner, the first determining submodule is specifically configured to:

[0094] The first temperature is obtained by subtracting the exhaust gas recirculation rate parameter value and the vehicle speed ambient temperature parameter value from the sum of the load parameter value and the ignition angle parameter value.

[0095] In an optional implementation, the device further includes:

[0096] a second determination module, for determining that when the target engine cylinder head temperature is greater than a first preset threshold, the electronic water pump is operated at a first speed; wherein the first speed is a maximum value of a speed corresponding to a temperature difference between the first temperature and a preset control temperature and a speed corresponding to a target engine coolant temperature, and the first speed is used to represent a speed of the electronic water pump corresponding to when the target engine cylinder head temperature is controlled at the preset control temperature;

[0097] Or, a third determination module is used to determine that when the target engine cylinder head temperature is less than a second preset threshold, the electronic water pump is operated at a second speed; wherein the second speed is a speed corresponding to the target engine coolant temperature.

[0098] In an optional implementation, the device further includes:

[0099] The second acquisition module is used to obtain the speed of the target engine, the slow mean effective pressure of the target engine, the ignition angle of the target engine, the exhaust gas recirculation rate of the target engine, the exhaust gas recirculation coefficient of the target engine, the speed of the vehicle corresponding to the target engine, the ambient temperature of the target engine, the speed of the electronic water pump and the coolant temperature of the target engine.

[0100] In an optional implementation manner, the processing module 202 is specifically configured to:

[0101] The unfiltered target engine cylinder head temperature is filtered by using an ascending filter and / or a descending filter to obtain a filtered target engine cylinder head temperature.

[0102] In an optional implementation, the device further includes:

[0103] The fourth determination module is used to adjust the flow rate of the coolant passing through the radiator corresponding to the target engine by controlling the opening of the water valve when determining that the cylinder head temperature of the target engine is greater than a third preset threshold.

[0104] In the engine cylinder head temperature determination device provided by the embodiment of the present disclosure, the operating condition parameter value of the target engine is obtained, wherein the operating condition parameter value is used to characterize the parameter value of the operating state and / or operating environment of the target engine during operation, the operating condition parameter value is processed by operation to determine the unfiltered target engine cylinder head temperature, the unfiltered target engine cylinder head temperature is filtered to obtain the filtered target engine cylinder head temperature, and the filtered target engine cylinder head temperature is used as the target engine cylinder head temperature. It can be seen that the embodiment of the present disclosure can accurately determine the target engine cylinder head temperature by processing the operating condition parameter value of the target engine, that is, the parameter value of the operating state and / or operating environment of the target engine during operation, thereby improving the accuracy of determining the engine cylinder head temperature.

[0105] In addition to the above-mentioned methods and apparatus, the embodiments of the present disclosure also provide a computer-readable storage medium, in which instructions are stored. When the instructions are executed on a terminal device, the terminal device implements the method for determining the engine cylinder head temperature described in the embodiments of the present disclosure.

[0106] In addition, the embodiment of the present disclosure also provides a device for determining the temperature of the engine cylinder head. Figure 3 As shown, it may include:

[0107] Processor 301, memory 302, input device 303 and output device 304. The number of processors 301 in the engine cylinder head temperature determination device can be one or more. Figure 3 In some embodiments of the present disclosure, the processor 301, the memory 302, the input device 303 and the output device 304 may be connected via a bus or other means, wherein: Figure 3 The example of connecting through bus is taken in the following.

[0108] The memory 302 can be used to store software programs and modules. The processor 301 runs the software programs and modules stored in the memory 302, thereby performing various functional applications and data processing of the engine cylinder head temperature determination device. The memory 302 can mainly include a program storage area and a data storage area, wherein the program storage area can store an operating system, at least one application required for a function, etc. In addition, the memory 302 can include a high-speed random access memory, and can also include a non-volatile memory, such as at least one disk storage device, a flash memory device, or other volatile solid-state storage devices. The input device 303 can be used to receive input digital or character information, and generate signal input related to user settings and function control of the engine cylinder head temperature determination device.

[0109] Specifically in this embodiment, the processor 301 will load the executable files corresponding to the processes of one or more applications into the memory 302 according to the following instructions, and the processor 301 will run the applications stored in the memory 302, so as to realize the various functions of the above-mentioned engine cylinder head temperature determination device.

[0110] It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0111] The above description is only a specific embodiment of the present disclosure, so that those skilled in the art can understand or implement the present disclosure. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present disclosure. Therefore, the present disclosure will not be limited to the embodiments described herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for determining the temperature of an engine cylinder head, characterized in that: The method comprises: Acquire an operating parameter value of a target engine; wherein the operating parameter value is used to characterize a parameter value of an operating state and / or an operating environment of the target engine during operation; Performing calculation processing on the operating condition parameter value to determine an unfiltered target engine cylinder head temperature; The unfiltered target engine cylinder head temperature is filtered to obtain a filtered target engine cylinder head temperature, and the filtered target engine cylinder head temperature is used as the target engine cylinder head temperature.

2. The method according to claim 1, characterized in that The operating condition parameter values ​​include a load parameter value, an ignition angle parameter value, an exhaust gas recirculation rate parameter value, a vehicle speed ambient temperature parameter value, and an electronic water pump parameter value. The operating condition parameter values ​​are processed to determine an unfiltered target engine cylinder head temperature, including: Performing calculation processing on the load parameter value, the ignition angle parameter value, the exhaust gas recirculation rate parameter value and the vehicle speed ambient temperature parameter value to determine a first temperature; wherein the first temperature is used to represent an unfiltered target engine cylinder head temperature without adding an electronic water pump speed factor; A difference between the first temperature and the electronic water pump parameter value is determined, and the difference is used as an unfiltered target engine cylinder head temperature.

3. The method according to claim 2, characterized in that The step of performing calculation processing on the load parameter value, the ignition angle parameter value, the exhaust gas recirculation rate parameter value, and the vehicle speed ambient temperature parameter value to determine the first temperature includes: The first temperature is obtained by subtracting the exhaust gas recirculation rate parameter value and the vehicle speed ambient temperature parameter value from the sum of the load parameter value and the ignition angle parameter value.

4. The method according to claim 2, characterized in that: The method further comprises: If it is determined that the target engine cylinder head temperature is greater than a first preset threshold, the electronic water pump is operated at a first speed; wherein the first speed is a maximum value of a speed corresponding to a temperature difference between the first temperature and a preset control temperature and a speed corresponding to a target engine coolant temperature, and the first speed is used to represent a speed of the electronic water pump corresponding to when the target engine cylinder head temperature is controlled at the preset control temperature; Alternatively, if it is determined that the target engine cylinder head temperature is less than a second preset threshold, the electronic water pump is operated at a second speed; wherein the second speed is a speed corresponding to the target engine coolant temperature.

5. The method according to claim 2, characterized in that: Before the calculation and processing of the load parameter value, the ignition angle parameter value, the exhaust gas recirculation rate parameter value and the vehicle speed ambient temperature parameter value is performed to determine the first temperature, the method further includes: Obtain the speed of the target engine, the slow mean effective pressure of the target engine, the ignition angle of the target engine, the exhaust gas recirculation rate of the target engine, the exhaust gas recirculation coefficient of the target engine, the speed of the vehicle corresponding to the target engine, the ambient temperature of the target engine, the speed of the electronic water pump and the coolant temperature of the target engine.

6. The method according to claim 1, characterized in that The filtering process of the unfiltered target engine cylinder head temperature to obtain the filtered target engine cylinder head temperature includes: The unfiltered target engine cylinder head temperature is filtered by using an ascending filter and / or a descending filter to obtain a filtered target engine cylinder head temperature.

7. The method according to claim 1, characterized in that The method further comprises: If it is determined that the cylinder head temperature of the target engine is greater than a third preset threshold, the flow rate of the coolant passing through the radiator corresponding to the target engine is adjusted by controlling the opening of the water valve.

8. A device for determining the temperature of an engine cylinder head, characterized in that: The device comprises: A first acquisition module is used to acquire an operating parameter value of a target engine; wherein the operating parameter value is used to characterize a parameter value of an operating state and / or operating environment of the target engine during operation; A first determination module, configured to perform calculation processing on the operating condition parameter value to determine an unfiltered target engine cylinder head temperature; The processing module is used to filter the unfiltered target engine cylinder head temperature to obtain a filtered target engine cylinder head temperature, and use the filtered target engine cylinder head temperature as the target engine cylinder head temperature.

9. A device for determining the temperature of an engine cylinder head, characterized in that: include: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the computer program, the method according to any one of claims 1 to 7 is implemented.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores instructions, and when the instructions are executed on a terminal device, the terminal device implements the method according to any one of claims 1 to 7.

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