Electronic throttle valve ice breaking method, device, equipment, storage medium and program product

Abstract

The application relates to an electronic throttle ice breaking method, device, equipment, storage medium and program product, and relates to the technical field of automobile control. The method comprises the following steps: acquiring the throttle driving stage state, speed, motor speed, storage battery voltage, water tank temperature and air inlet temperature of a vehicle; in the case that the parameters meet specific conditions, controlling the electronic throttle of the vehicle to be closed to a first throttle opening degree; when the difference between the actual opening degree of the electronic throttle and the first throttle opening degree is greater than a first proportion threshold, controlling the electronic throttle to be gradually opened to a second throttle opening degree within a target time length; within the target time length, controlling the electronic throttle to be gradually closed from the second throttle opening degree to the first throttle opening degree; and in the case that the actual opening degree of the electronic throttle reaches a target throttle opening degree, starting the engine corresponding to the electronic throttle. The scheme can improve the ice breaking effect of the electronic throttle.

Description

TECHNICAL FIELD

[0001] Embodiments of the present application relate to the technical field of automobile control, and in particular, relate to an electronic throttle valve ice breaking method, device, equipment, storage medium and program product. BACKGROUND

[0002] With the rapid development of automobile control technology, the original traditional mechanical throttle valve in the automobile engine can be replaced by an electronic throttle valve. The electronic throttle valve is opened / closed through electronic control. In some cases, the engine will have an intake condition. Since the engine intake contains water vapor, the water vapor attached to the electronic throttle valve is prone to icing in the case that the temperature of the working environment of the engine is low. Therefore, the ice breaking effect of the electronic throttle valve is particularly important.

[0003] In the related art, a vehicle can obtain an actual opening degree value and an expected opening degree value of an electronic throttle valve in real time, and control the electronic throttle valve to perform an ice breaking operation according to a deviation between the actual opening degree value and the expected opening degree value of the electronic throttle valve.

[0004] However, in the scheme shown in the above related art, the way of controlling the ice breaking operation of the electronic throttle valve is relatively single, and the ice breaking effect of the electronic throttle valve is poor. SUMMARY

[0005] Embodiments of the present application provide an electronic throttle valve ice breaking method, device, equipment, storage medium and program product, which can improve the ice breaking effect of the electronic throttle valve. The technical scheme is as follows:

[0006] On the one hand, an electronic throttle valve ice breaking method is provided, and the method comprises:

[0007] obtaining a throttle valve driving stage state, a speed, a motor speed, a battery voltage, a water tank temperature and an intake temperature of a vehicle;

[0008] in a case that the throttle valve driving stage state meets a specified condition, the speed is less than a specified vehicle speed, the motor speed is less than a specified speed, the battery voltage belongs to a specified voltage interval, the water tank temperature belongs to a first temperature interval and the intake temperature belongs to a second temperature interval, controlling an electronic throttle valve of the vehicle to close to a first throttle valve opening degree;

[0009] when a difference between the actual opening degree of the electronic throttle valve and the first throttle valve opening degree is greater than a first proportion threshold, controlling the electronic throttle valve to gradually open to the second throttle valve opening degree within a target time length;

[0010] within the target time length, controlling the electronic throttle valve to gradually close from the second throttle valve opening degree to the first throttle valve opening degree;

[0011] start an engine corresponding to the electronic throttle valve when an actual opening degree of the electronic throttle valve reaches a target throttle opening degree; the target throttle opening degree is a throttle opening degree value of the first throttle opening degree plus a deviation threshold.

[0012] In another aspect, an electronic throttle valve ice breaking device is provided, the device comprising:

[0013] an information acquisition module configured to acquire a throttle drive stage state, a speed, a motor speed, a battery voltage, a water tank temperature, and an intake air temperature of a vehicle;

[0014] an electronic throttle valve first closing module configured to control an electronic throttle valve of the vehicle to close to a first throttle opening degree when the throttle drive stage state satisfies a specified condition, the speed is less than a specified vehicle speed, the motor speed is less than a specified rotational speed, the battery voltage belongs to a specified voltage interval, the water tank temperature belongs to a first temperature interval, and the intake air temperature belongs to a second temperature interval;

[0015] an electronic throttle valve opening module configured to control the electronic throttle valve to gradually open to a second throttle opening degree within a target time length when a difference between the actual opening degree of the electronic throttle valve and the first throttle opening degree is greater than a first proportion threshold;

[0016] an electronic throttle valve second closing module configured to control the electronic throttle valve to gradually close from the second throttle opening degree to the first throttle opening degree within the target time length;

[0017] an engine starting module configured to start an engine corresponding to the electronic throttle valve when the actual opening degree of the electronic throttle valve reaches a target throttle opening degree; the target throttle opening degree is a throttle opening degree value of the first throttle opening degree plus a deviation threshold.

[0018] In some embodiments, the electronic throttle valve opening module is configured to acquire a calibration slope value;

[0019] determine a first target opening degree value based on the calibration slope value and an upper limit opening degree of the second throttle opening degree;

[0020] control the electronic throttle valve to gradually open to the second throttle opening degree according to the first target opening degree value.

[0021] In some embodiments, the electronic throttle valve opening module is configured to acquire a product of the calibration slope value and an opening time length of the electronic throttle valve within the target time length, and a minimum value of the upper limit opening degree of the second throttle opening degree, as the first target opening degree value.

[0022] In some embodiments, the electronic throttle second closing module is configured to obtain a calibration slope value.

[0023] The electronic throttle second closing module is configured to determine a second target opening value based on the calibration slope value and an upper limit opening value of the first throttle opening.

[0024] The electronic throttle second closing module is configured to control the electronic throttle to gradually close to the first throttle opening according to the second target opening value.

[0025] In some embodiments, the electronic throttle second closing module is configured to obtain a product of the calibration slope value and an opening duration of the electronic throttle within the target duration, and a minimum value of the upper limit opening value of the first throttle opening and the second target opening value.

[0026] In some embodiments, the specified vehicle speed is 5 km / h, the specified rotational speed is 40 r / min, the specified voltage interval is 9 V to 16 V, the first temperature interval is -35℃ to 0℃, and the second temperature interval is -35℃ to 0℃.

[0027] In another aspect, a computer device is provided, which includes a processor and a memory, the memory storing at least one instruction, at least one program, a code set or an instruction set, the at least one instruction, the at least one program, the code set or the instruction set being loaded and executed by the processor to implement the electronic throttle ice breaking method as described above.

[0028] In another aspect, a computer readable storage medium is provided, which stores at least one instruction, at least one program, a code set or an instruction set, the at least one instruction, the at least one program, the code set or the instruction set being loaded and executed by a processor to implement the electronic throttle ice breaking method as described above.

[0029] In yet another aspect, a computer program product is provided, which includes a computer program stored in a computer readable storage medium. A processor of a computer device reads the computer program from the computer readable storage medium, and the processor executes the computer program to cause the computer device to perform the electronic throttle ice breaking method provided in the various optional implementation manners described above.

[0030] The technical scheme provided in the application can have the following beneficial effects: the vehicle obtains multiple operating parameters, and in the case that the multiple operating parameters meet specified conditions, triggers the ice-breaking operation of the electronic throttle valve, controls the electronic throttle valve to gradually open to a higher second throttle opening, and then closes, through repeatedly opening and closing, helps to break the ice layer on the electronic throttle valve, and through gradual operation, avoids mechanical damage caused by sudden large opening of the electronic throttle valve. The above scheme ensures the safety of the electronic throttle valve during ice breaking, and effectively improves the ice breaking effect of the electronic throttle valve.

[0031] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the application. BRIEF DESCRIPTION OF DRAWINGS

[0032] The accompanying drawings incorporated in and forming a part of the specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the application.

[0033] Figure 1 is a system configuration diagram of an electronic throttle valve ice breaking method related to an embodiment of the application;

[0034] Figure 2 is a flowchart of an electronic throttle valve ice breaking method provided by an embodiment of the application;

[0035] Figure 3 is a flowchart of an electronic throttle valve ice breaking method provided by an embodiment of the application;

[0036] Figure 4 is a flowchart of an electronic throttle valve ice breaking method provided by an embodiment of the application;

[0037] Figure 5 is a flowchart of the overall ice identification and ice breaking strategy provided by an embodiment of the application;

[0038] Figure 6 is a schematic diagram of the ice breaking strategy provided by an embodiment of the application;

[0039] Figure 7 is a block diagram of an electronic throttle valve ice breaking device provided by an exemplary embodiment of the application;

[0040] Figure 8 is a structural schematic diagram of a computer device provided by an exemplary embodiment of the application. DETAILED DESCRIPTION

[0041] The exemplary embodiments will be described in detail herein with reference to the attached drawings. In the following description, like reference numerals refer to like elements, unless indicated otherwise. The following description of exemplary embodiments is not representative of all possible embodiments consistent with the present application.

[0042] Rather, they are examples of apparatus and methods consistent with some aspects of the present application as more fully described in the following claims.

[0043] Figure 1 is a system configuration diagram of an electronic throttle ice breaking method according to an embodiment of the present application. As shown in Figure 1 , a vehicle 100 comprises an engine 100a, and an electronic throttle 10 is installed on the engine 100a. The vehicle 100 can acquire the throttle driving stage state, speed, motor speed, battery voltage, water tank temperature, and intake temperature of the vehicle 100; in the case that the throttle driving stage state meets the specified conditions, the speed is less than the specified vehicle speed, the motor speed is less than the specified motor speed, the battery voltage belongs to the specified voltage interval, the water tank temperature belongs to the first temperature interval, and the intake temperature belongs to the second temperature interval, the electronic throttle 10 of the vehicle 100 is controlled to be closed to a first throttle opening; when the difference between the actual opening of the electronic throttle 10 and the first throttle opening is greater than a first proportional threshold, the electronic throttle 10 is controlled to be gradually opened to a second throttle opening within a target time interval; within the target time interval, the electronic throttle 10 is controlled to be gradually closed from the second throttle opening to the first throttle opening; in the case that the actual opening of the electronic throttle 10 meets the throttle opening value (i.e., the target throttle opening) of the first throttle opening plus a deviation threshold, the engine 100a corresponding to the electronic throttle 10 is started.

[0044] For example, please refer to Figure 2 , Figure 2 is a flowchart of an electronic throttle ice breaking method according to an embodiment of the present application. Figure 2 The electronic throttle ice breaking method shown in Figure 1 may be performed by a vehicle, such as the vehicle 100 shown in

[0045] As shown in Figure 2 , the electronic throttle ice breaking method can comprise steps 210, 220, 230, 240, and 250, which are implemented as follows.

[0046] Step 210: Acquire the throttle driving stage state, speed, motor speed, battery voltage, water tank temperature, and intake temperature of the vehicle.

[0047] The throttle driving stage state refers to the working state of the electronic throttle of the engine, which can be normal or abnormal.

[0048] In the embodiment of the present application, the throttle drive stage state is normal, indicating that the current electronic throttle is working normally and no abnormality occurs; the throttle drive stage state is abnormal, indicating that the current electronic throttle fails to work normally; and the vehicle can obtain the throttle drive stage state of the vehicle through the engine control system.

[0049] The speed is the current driving speed of the vehicle, and in the embodiment of the present application, the speed of the vehicle can be obtained through a vehicle speed sensor.

[0050] The motor speed is the rotating speed of the motor, and in the embodiment of the present application, the vehicle can obtain the motor speed through a motor speed sensor.

[0051] The battery voltage is the voltage level of the vehicle, and in the embodiment of the present application, the battery voltage can be obtained through a voltage sensor.

[0052] The water tank temperature is the temperature of the cooling liquid of the vehicle, and in the embodiment of the present application, the temperature of the cooling liquid of the vehicle can be obtained through a water temperature sensor.

[0053] The intake air temperature is the temperature of air entering the engine, and in the embodiment of the present application, the vehicle can obtain the intake air temperature through an intake air temperature sensor.

[0054] Step 220: In the case that the throttle drive stage state meets the specified condition, the speed is less than the specified vehicle speed, the motor speed is less than the specified motor speed, the battery voltage belongs to the specified voltage interval, the water tank temperature belongs to the first temperature interval, and the intake air temperature belongs to the second temperature interval, the electronic throttle of the vehicle is controlled to close to the first throttle opening degree.

[0055] The specified condition is preset, and is used to ensure that the electronic throttle is in a safe working range of the throttle drive stage state.

[0056] The specified vehicle speed is a preset lower vehicle speed, for example, 5 km / h.

[0057] The specified motor speed is a preset lower motor speed, for example, 40 r / min.

[0058] The first temperature interval and the second temperature interval are a temperature interval not exceeding 0 degrees, for example, -35℃ to 0℃.

[0059] The first throttle opening degree is a preset smaller opening value, for example, 1%, and is used to indicate that the electronic throttle is closed to an almost closed state.

[0060] In the embodiments of the present application, the electronic throttle valve can be smoothly closed to the first throttle opening degree, indicating that there is no ice in the current electronic throttle valve; the electronic throttle valve cannot be smoothly closed to the first throttle opening degree, indicating that there is ice in the current electronic throttle valve, affecting the closing of the electronic throttle valve.

[0061] Step 230: When the difference between the actual opening degree of the electronic throttle valve and the first throttle opening degree is greater than the first proportion threshold, the electronic throttle valve is controlled to be gradually opened to the second throttle opening degree within a target time length.

[0062] The first proportion threshold is a preset opening degree threshold of the electronic throttle valve, for example, 5%.

[0063] In the embodiments of the present application, when the difference between the actual opening degree of the electronic throttle valve and the first throttle opening degree is greater than the first proportion threshold, it indicates that the electronic throttle valve cannot be closed to a nearly closed state, and ice may appear in the electronic throttle valve, hindering the closing operation of the electronic throttle valve.

[0064] The second throttle opening degree is a preset opening degree value slightly larger than the first throttle opening degree, for example, 15%.

[0065] The target time length is a preset time length, for example, 4s.

[0066] In the embodiments of the present application, when the actual opening degree of the electronic throttle valve approaches but does not reach the first throttle opening degree, the vehicle can control the electronic throttle valve to be gradually opened to the second throttle opening degree within the target time.

[0067] For example, assuming that the second throttle opening degree is set to 40%, the vehicle will control the electronic throttle valve to be gradually opened to 40% within the next 5 seconds when detecting that the actual opening degree of the electronic throttle valve is 30%.

[0068] Within the target time, the vehicle can control the electronic throttle valve to perform the opening operation multiple times, and exit the opening operation when the electronic throttle valve is opened to the second throttle opening degree.

[0069] Step 240: Within the target time length, the electronic throttle valve is controlled to be gradually closed from the second throttle opening degree to the first throttle opening degree.

[0070] In the embodiments of the present application, after the opening degree of the electronic throttle valve reaches the second throttle opening degree, the vehicle gradually closes the electronic throttle valve to the first throttle opening degree within the target time length to ensure the ice breaking effect.

[0071] For example, assuming that the first throttle opening degree is set to 1%, the vehicle controls the electronic throttle valve to be gradually closed to 1% after detecting that the electronic throttle valve has been opened to the second throttle opening degree.

[0072] Step 250: start the engine corresponding to the electronic throttle valve in the case that the actual opening degree of the electronic throttle valve reaches the target throttle opening degree, the target throttle opening degree being the throttle opening degree value of the first throttle opening degree plus the deviation threshold.

[0073] The deviation threshold is the allowable difference between the actual opening degree of the electronic throttle valve and the first throttle opening degree, for example, ± 3%, that is, the actual opening degree of the electronic throttle valve can be greater than / less than 3% of the first throttle opening degree.

[0074] In the embodiments of the present application, the vehicle obtains a plurality of operating parameters, and triggers the ice-breaking operation of the electronic throttle valve in the case that the plurality of operating parameters meet the specified conditions, and controls the electronic throttle valve to gradually open to a higher second throttle opening degree and then close, so as to help break the ice layer on the electronic throttle valve by repeatedly opening and closing, and avoid mechanical damage caused by sudden large opening degree change of the electronic throttle valve by gradual operation, which ensures the safety of the electronic throttle valve during the ice-breaking process of the electronic throttle valve and effectively improves the ice-breaking effect of the electronic throttle valve.

[0075] In some embodiments, the vehicle can obtain meteorological data of the environment in which the vehicle is located in real time, the meteorological data including environmental temperature, air humidity, and precipitation type; the electronic throttle valve of the vehicle is controlled to close to the first throttle opening degree when the meteorological data meets the specified conditions, the specified conditions including that the environmental temperature is not higher than -10℃, the air humidity is not less than 70℃, or the precipitation type is freezing rain / sleet, the first throttle opening degree is dynamically adjusted according to the environmental temperature, and the first throttle opening degree is increased by 0.5% for every 5℃ decrease in the environmental temperature; the electronic throttle valve is controlled to gradually open to the second throttle opening degree within a target time period; the electronic throttle valve is controlled to gradually close from the second throttle opening degree to the first throttle opening degree within the target time period; the engine corresponding to the electronic throttle valve is started in the case that the actual opening degree of the electronic throttle valve reaches the target throttle opening degree; and the target throttle opening degree is the throttle opening degree value of the first throttle opening degree plus the deviation threshold.

[0076] The environmental temperature refers to the temperature outside the vehicle, and in the embodiments of the present application, the vehicle can obtain the temperature outside the vehicle through an environmental temperature sensor.

[0077] The air humidity refers to the content of water vapor in the air, and in the embodiments of the present application, the vehicle can obtain the air humidity through an air humidity sensor.

[0078] The precipitation type includes different forms of precipitation such as rain, snow, freezing rain, and sleet, and in the embodiments of the present application, the vehicle can obtain precipitation information in real time through the Internet of Vehicles to determine the precipitation type.

[0079] In the embodiments of the present application, when the meteorological data satisfies the specified condition, it indicates that the environment where the current vehicle is located is relatively severe and is prone to icing. The opening degree of the electronic throttle valve is dynamically adjusted according to the specific meteorological condition, so that the vehicle can maintain the best working state in the variable climate environment and improve the ice breaking effect.

[0080] Based on the scheme shown in any one or more of the embodiments of the present application, reference can be made to Figure 3 , Figure 3 is a flowchart of an electronic throttle valve ice breaking method provided in an embodiment of the present application. The step 230 can be implemented as steps 230a, 230b and 230c, and the details are as follows.

[0081] Step 230a: Obtain the calibration slope value.

[0082] The calibration slope value is a pre-set parameter for describing the speed of the electronic throttle valve from one opening degree to another opening degree, indicating the change amount of the opening degree of the electronic throttle valve per unit time.

[0083] In the embodiments of the present application, the calibration slope value can be stored in the motor control system, and the vehicle obtains the calibration slope from the motor control system.

[0084] Step 230b: Determine the first target opening degree value based on the calibration slope value and the upper limit opening degree of the second throttle opening degree.

[0085] The upper limit opening degree of the second throttle opening degree is the maximum opening degree value allowed by the vehicle when controlling the electronic throttle valve to open to the second throttle opening degree.

[0086] In the embodiments of the present application, the upper limit opening degree of the second throttle opening degree can be stored in the motor control system. Different vehicle models can correspond to different second throttle opening degrees and different upper limit opening degrees of the second throttle opening degree. The corresponding second throttle opening degree and the upper limit opening degree of the second throttle opening degree can also be different under different working environments of the vehicle.

[0087] Step 230c: Control the electronic throttle valve to gradually open to the second throttle opening degree according to the first target opening degree value.

[0088] In the embodiments of the present application, after the vehicle determines the first target opening degree value through the motor control system, the electronic throttle valve is controlled to gradually open to the second target opening degree value.

[0089] In the embodiment of the present application, the vehicle controls the electronic throttle valve to gradually open according to the first target opening degree value determined based on the calibration slope value and the upper limit opening degree of the second throttle opening degree, thereby achieving fine control of the electronic throttle valve, effectively preventing potential risks caused by too fast or too large opening of the electronic throttle valve, and further improving the stability of the electronic throttle valve opening operation.

[0090] Based on the scheme shown in any one or more of the above embodiments of the present application, the step 230b can be implemented by obtaining the minimum value of the product of the calibration slope value and the opening time length of the electronic throttle valve within the target time length and the upper limit opening degree of the second throttle opening degree as the first target opening degree value.

[0091] The opening time length within the target time length represents the time length planned for gradually adjusting the electronic throttle valve from an initial opening degree (for example, the first throttle opening degree) to a final desired opening degree (for example, the second throttle opening degree).

[0092] In the embodiment of the present application, the product of the calibration slope value and the opening time length of the electronic throttle valve within the target time length is obtained by multiplying the pre-set calibration slope value and the time length planned for gradually increasing the throttle opening degree, and the product represents the maximum opening degree increment that the electronic throttle valve can theoretically reach within the target time period based on the currently set adjustment rate.

[0093] In the embodiment of the present application, after obtaining the product, the vehicle compares the product with the upper limit opening degree of the second throttle opening degree, and limits the upper limit opening degree of the first target opening degree value by the upper limit opening degree of the second throttle opening degree.

[0094] In the case where the product is less than the upper limit opening degree of the second throttle opening degree, it indicates that the electronic throttle valve may be currently stuck by ice, and the electronic throttle valve cannot increase the opening degree to the second throttle opening degree. At this time, the product of the calibration slope value and the opening time length of the electronic throttle valve within the target time length is taken as the target of the current opening operation, and the opening operation is performed to make the electronic throttle valve break through the current opening degree and perform effective ice breaking operation. In the case where the product is greater than the upper limit opening degree of the second throttle opening degree, the second throttle opening degree is obtained as the target opening degree value of the current opening operation, without the need for too large opening, thereby avoiding mechanical damage caused by too large throttle opening degree.

[0095] In the embodiment of the present application, the product of the calibration slope value and the opening time length of the electronic throttle valve within the target time length can reflect the actual opening degree of the electronic throttle valve, and on this basis, the first target opening degree value of the electronic throttle valve is limited by the upper limit opening degree of the second throttle opening degree, thereby ensuring that no mechanical damage is caused to the electronic throttle valve and enabling the electronic throttle valve to effectively achieve ice breaking effect.

[0096] Based on the scheme shown in any one or more of the above embodiments of the present application, reference is made to Figure 4 , Figure 4 is a flowchart of an electronic throttle valve ice breaking method provided in an embodiment of the present application. The above step 240 can be implemented as step 240a, step 240b and step 240c, as follows.

[0097] Step 240a: Obtain a calibration slope value.

[0098] The calibration slope value is a pre-set parameter for describing the speed of the electronic throttle valve from one opening degree to another opening degree, indicating the change amount of the electronic throttle valve opening degree per unit time.

[0099] In the embodiment of the present application, the calibration slope value can be stored in the motor control system, and the vehicle obtains the calibration slope from the motor control system.

[0100] Step 240b: Determine a second target opening degree value based on the calibration slope value and an upper limit opening degree of the first throttle valve opening degree.

[0101] The upper limit opening degree of the first throttle valve opening degree is a maximum allowed opening degree value set in the process of gradually closing the electronic throttle valve from a higher second throttle valve opening degree back to the initial first throttle valve opening degree.

[0102] In the embodiment of the present application, the upper limit opening degree of the first throttle valve opening degree can be stored in the motor control system. Different vehicle models can correspond to different first throttle valve opening degrees and upper limit opening degrees of the first throttle valve opening degree. The corresponding first throttle valve opening degree and upper limit opening degree of the first throttle valve opening degree can also be different under different working environments of the vehicle.

[0103] Step 240c: Control the electronic throttle valve to gradually close to the first throttle valve opening degree according to the second target opening degree value.

[0104] In the embodiment of the present application, after the vehicle determines the first target opening degree value through the motor control system, the electronic throttle valve is controlled to gradually close to the first target opening degree value.

[0105] In the embodiment of the present application, the vehicle controls the electronic throttle valve to gradually close according to the second target opening degree value determined based on the calibration slope value and the upper limit opening degree of the first throttle valve opening degree, which realizes meticulous control of the electronic throttle valve, effectively prevents potential risks caused by too fast closing of the electronic throttle valve, and further improves the stability of the electronic throttle valve closing operation.

[0106] Based on the scheme shown in any one or more of the above embodiments of the application, the step 240b can be implemented as follows: obtaining the minimum value of the product of the calibration slope value and the opening duration of the electronic throttle valve within the target duration, and the upper limit of the first throttle opening degree, and determining the second target opening degree value.

[0107] In the embodiments of the application, the product of the calibration slope value and the opening duration of the electronic throttle valve within the target duration is obtained by multiplying the pre-set calibration slope value and the time length planned for gradually increasing the throttle opening degree, and the product represents the maximum opening degree increment that the electronic throttle valve can theoretically reach within the target time period based on the currently set adjustment rate.

[0108] The opening duration within the target duration represents the time period planned for gradually adjusting the electronic throttle valve from a lower initial opening degree (such as the first throttle opening degree) to a higher desired opening degree (such as the second throttle opening degree). The selection of the time length needs to consider multiple factors, including but not limited to the current state of the vehicle, external environmental conditions, and the required safety margin, etc.

[0109] In the embodiments of the application, after the vehicle obtains the product, the vehicle compares the product with the upper limit of the first throttle opening degree, and uses the upper limit of the first throttle opening degree to limit the upper limit of the second target opening degree value.

[0110] In the case where the product is less than the upper limit of the first throttle opening degree, it indicates that the electronic throttle valve may be currently stuck by ice, and the electronic throttle valve cannot close the opening degree to the first throttle opening degree. At this time, the product is taken as the target opening degree value of the current closing operation, and the closing operation is performed to make the electronic throttle valve perform an effective ice breaking operation. In the case where the product is greater than the upper limit of the first throttle opening degree, the first throttle opening degree is obtained as the target opening degree value of the current closing operation, and there is no need to close too small to avoid the electronic throttle port being unable to exhaust due to closing too small.

[0111] In the embodiments of the application, the vehicle calculates the product of the calibration slope value and the opening duration of the electronic throttle valve within the target duration, and compares the product with the upper limit of the first throttle opening degree to obtain the minimum value as the second target opening degree value, which realizes accurate control of the closing process of the electronic throttle valve, effectively ensures that the actual opening degree of the electronic throttle valve will not exceed the pre-set safety range, avoids mechanical damage or performance degradation due to excessive closing, and effectively guarantees the stability of the closing of the electronic throttle valve.

[0112] Based on the scheme shown in any one or more of the above embodiments of the application, the specified vehicle speed is 5 km / h, the specified rotational speed is 40 r / min, the specified voltage interval is 9 V to 16 V, the first temperature interval is -35°C to 0°C, and the second temperature interval is -35°C to 0°C.

[0113] In the embodiment of the present application, the specific values and value ranges of the above-mentioned multiple operating parameters are set, and low vehicle speed and low motor speed reduce the dynamic load in vehicle driving, which is beneficial to the stability of the vehicle in performing ice breaking operation; the reasonable range of the battery voltage is set, which can effectively ensure the stability of the power supply for ice breaking operation, preventing the influence of voltage fluctuation on the vehicle performing ice breaking operation, and the above-mentioned parameter setting effectively ensures that the vehicle can start smoothly in a low temperature environment to perform ice breaking operation, thereby improving the safety of ice breaking operation.

[0114] Based on the steps in the above-mentioned Figures 2 to 4 embodiment, the embodiment of the present application shows a strategy for optimizing the torque fluctuation of a hybrid vehicle in a trailer working condition.

[0115] For example, please refer to Figure 5 , Figure 5 is a flowchart of the overall ice recognition and ice breaking strategy provided by an embodiment of the present application. As Figure 5 shown, the strategy includes steps 51, 52, 53 and 54, which are as follows.

[0116] Step 51: Power on the engine

[0117] In the embodiment of the present application, the vehicle powers on the engine, so that the engine has enough power to perform subsequent ice breaking operation.

[0118] Step 52: Perform ice checking

[0119] In the embodiment of the present application, the vehicle obtains multiple parameter information and judges whether the parameter information meets the specified conditions. The parameter information includes but is not limited to throttle drive level state, vehicle speed, motor speed, battery voltage, water temperature and intake temperature.

[0120] Judge whether the throttle drive level state is normal. The normal throttle drive level state indicates that the throttle drive is fault-free, the intake temperature is between -35 degrees and 0 degrees, the engine water temperature is between -35 degrees and 0 degrees, the voltage is between 9V and 16V, the engine speed is not more than 40r / min, and the vehicle speed is less than 5km / h.

[0121] Step 53: Perform ice breaking strategy

[0122] In the embodiment of the present application, when the vehicle detects that the throttle drive level state is normal, the intake temperature is between -35℃ and 0℃, the engine water temperature is between -35℃ and 0℃, the voltage is between 9V and 16V, the engine speed is not more than 40r / min, and the vehicle speed is less than 5km / h, the ice breaking strategy is performed.

[0123] a) Ice breaking check step 0, first let the throttle open to the target opening, i.e. 1%.

[0124] b) Ice breaking check step 1, judge whether the throttle reaches the target opening threshold value, if the actual opening of the throttle and the target opening difference is less than 0.5%, exit the ice breaking check 2-3 steps; if the actual opening of the throttle and the target opening difference is greater than 0.5%, maintain the target throttle opening 1%, judge whether the ice breaking reaches the maximum time threshold value (2s) of the target opening.

[0125] c) Ice breaking check step 2, judge whether the ice breaking reaches the upper limit value of the target opening position, i.e. 40%, open the throttle to the target throttle opening (40%), the target position upper limit value is obtained after the calibration slope value is multiplied by time, and the target position upper limit value is maintained for a duration of 0.2s.

[0126] d) Ice breaking check step 3, judge whether the opening of the throttle reaches the lower limit value of the target closing position (1%), close the throttle to the target throttle opening 1%, the target opening value of the ice breaking is obtained after the calibration slope value is multiplied by time, and the target closing lower limit value is maintained for a duration of 0.2s.

[0127] The vehicle detects that the actual opening of the throttle reaches the lower limit value of the target closing position (1%) + the target lower limit value allowed deviation threshold value (0.5%) below, exit the ice breaking.

[0128] For example, please refer to Figure 6 , Figure 6 is an ice breaking strategy diagram provided by an embodiment of the present application.

[0129] As shown in Figure 6 , the throttle initially performs ice breaking operation, and cannot reach the allowed target position of ice breaking (i.e. target position + upper and lower limit threshold value of allowed deviation), and continuously performs 4 times of ice breaking operation, each ice breaking operation includes once opening and once closing, and the 4 times of ice breaking operation allows to be performed for a specified duration.

[0130] Step 54: Allow to start the engine

[0131] If d) is not successful, repeat the allowed maximum number of times 4 times of ice breaking after power-on, if the ice breaking is successful or there is no ice, allow the engine to start.

[0132] In the embodiment of the present application, the above scheme relates to the icing identification and deicing strategy of the electronic throttle valve of the hybrid vehicle at low temperature. The above strategy scheme can be applied to the vehicle model currently matched with the H4J15 engine and having an EGR (Exhaust Gas Recirculation, exhaust gas recirculation system) exhaust self-circulation device. Under the low temperature environmental condition, especially at about 0 DEG C, the EGR working condition is above 0 DEG C. During the operation of the engine, if there is more water vapor in the manifold of the engine, the water vapor will condense at the throttle valve plate at low temperature, and the ice at the throttle valve plate will gradually form as the temperature of the engine decreases. It is also possible to form during driving, which will cause the throttle valve to be unable to open from the current position to the full open position after being powered on, easily causing the throttle valve to exceed the PID (Proportional-Integral-Derivative, proportional-integral-derivative) adjustment limit, and the throttle valve to be stuck. After the engine is shut down, the exhaust pipe is disassembled, and it is found that there is ice near the DVE (Direct Variable Exchanger, direct variable exchanger) valve plate.

[0133] In the embodiment of the present application, the above scheme can save costs and provide a scheme for the platform development of company vehicle models, which can effectively reduce the after-sales complaints of vehicles.

[0134] Please refer to Figure 7 , which shows a block diagram of an electronic throttle valve deicing device provided by an example embodiment of the present application. The electronic throttle valve deicing device can be implemented as all or part of a computer device by hardware or a combination of hardware and software, to implement all or part of the steps in the above Figures 2 to 4 embodiment. As shown in Figure 7 , the electronic throttle valve deicing device includes:

[0135] An information acquisition module 701 is configured to acquire the throttle valve driving stage state, speed, motor speed, battery voltage, water tank temperature, and intake temperature of the vehicle.

[0136] An electronic throttle valve first closing module 702 is configured to control the electronic throttle valve of the vehicle to close to a first throttle opening degree under the condition that the throttle valve driving stage state meets a specified condition, the speed is less than a specified vehicle speed, the motor speed is less than a specified speed, the battery voltage belongs to a specified voltage interval, the water tank temperature belongs to a first temperature interval, and the intake temperature belongs to a second temperature interval.

[0137] An electronic throttle valve opening module 703 is configured to control the electronic throttle valve to gradually open to a second throttle opening degree within a target time length when the difference between the actual opening degree of the electronic throttle valve and the first throttle opening degree is greater than a first proportion threshold.

[0138] The electronic throttle valve second closing module 704 is configured to control the electronic throttle valve to gradually close from the second throttle opening degree to the first throttle opening degree within the target time length.

[0139] The engine starting module 705 is configured to start the engine corresponding to the electronic throttle valve when the actual opening degree of the electronic throttle valve reaches the target throttle opening degree, the target throttle opening degree being a throttle opening degree value obtained by adding the deviation threshold to the first throttle opening degree.

[0140] In some embodiments, the electronic throttle valve opening module 703 is configured to obtain a calibration slope value.

[0141] The first target opening degree value is determined based on the calibration slope value and an upper limit opening degree of the second throttle opening degree.

[0142] The electronic throttle valve is controlled to gradually open to the second throttle opening degree according to the first target opening degree value.

[0143] In some embodiments, the electronic throttle valve opening module 703 is configured to obtain a product of the calibration slope value and an opening time length of the electronic throttle valve within the target time length, and a minimum value of the upper limit opening degree of the second throttle opening degree, as the first target opening degree value.

[0144] In some embodiments, the electronic throttle valve second closing module 704 is configured to obtain a calibration slope value.

[0145] The second target opening degree value is determined based on the calibration slope value and an upper limit opening degree of the first throttle opening degree.

[0146] The electronic throttle valve is controlled to gradually close to the first throttle opening degree according to the second target opening degree value.

[0147] In some embodiments, the electronic throttle valve second closing module 704 is configured to obtain a product of the calibration slope value and an opening time length of the electronic throttle valve within the target time length, and a minimum value of the upper limit opening degree of the first throttle opening degree, as the second target opening degree value.

[0148] In some embodiments, the specified vehicle speed is 5 km / h, the specified rotational speed is 40 r / min, the specified voltage interval is 9 V to 16 V, the first temperature interval is -35℃ to 0℃, and the second temperature interval is -35℃ to 0℃.

[0149] Please refer to Figure 8 , Figure 8Figure 8 is a block diagram of a computer device according to an example embodiment of the present application. The computer device 800 includes a central processing unit (CPU) 801, a system memory 804, and a system bus 805 that couples the system memory 804 to the central processing unit 801. The computer device 800 also includes a basic input / output system (I / O) 806 that helps transfer information between elements of the computer, and a mass storage device 807 for storing an operating system 813, application programs 814, and other program modules 815.

[0150] The basic input / output system 806 includes a display 808 for displaying information and an input device 809, such as a mouse, keyboard, or the like, for inputting information into the computer. The display 808 and input device 809 are connected to the central processing unit 801 through an input / output controller 810 that is connected to the system bus 805. The basic input / output system 806 can also include the input / output controller 810 for receiving and processing input from a number of other devices, including a keyboard, mouse, or electronic stylus. Similarly, the input / output controller 810 provides output to a display screen, printer, or other type of output device.

[0151] The mass storage device 807 is connected to the central processing unit 801 through a mass storage controller (not shown) that is connected to the system bus 805. The mass storage device 807 and its associated computer-readable media provide non-volatile storage for the computer device 800. That is, the mass storage device 807 can include a computer- readable medium (not shown) such as a hard disk or a CD-ROM (Compact Disc Read-Only Memory) drive.

[0152] Without loss of generality, the computer readable medium can include computer storage media and communication media. Computer storage media includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data. Computer storage media includes, but is not limited to, RAM, ROM, EPROM, EEPROM, flash memory or other solid state memory technology, CD-ROM, Digital Video Disc (DVD), or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices. It should be understood by those skilled in the art that computer storage media does not limit to the above-mentioned several kinds. The system memory 804 and the mass storage device 807 mentioned above can be collectively referred to as memory.

[0153] The computer device 800 can be connected to the Internet or other network devices through the network interface unit 811 connected to the system bus 805.

[0154] The memory further includes one or more programs, and the one or more programs are stored in the memory, and the central processing unit 801 implements Figures 2 to 4 all or part of the steps of the method shown in the embodiments.

[0155] In the exemplary embodiments, a chip is also provided, and the chip includes programmable logic circuit and / or program instructions, and when the chip is running on the computer device, the chip is used to implement all or part of the steps of the method shown in the embodiments of the present application.

[0156] In the exemplary embodiments, a computer program product is also provided, and the computer program product includes computer instructions stored in a computer readable storage medium. The processor of the computer device reads the computer instructions from the computer readable storage medium, and the processor reads and executes the computer instructions from the computer readable storage medium to implement all or part of the steps of the method shown in the embodiments of the present application.

[0157] In the example embodiments, a computer readable storage medium is also provided, in which a computer program is stored, the computer program is loaded and executed by a processor to implement all or part of the steps of the method shown in the above embodiments of the present application.

[0158] A person of ordinary skill in the art can understand that all or part of the steps of the above embodiments can be completed by hardware, or by program to instruct related hardware, the above program can be stored in a computer readable storage medium, and the storage medium mentioned above can be a read-only memory, a magnetic disk or an optical disk, etc.

[0159] A person of ordinary skill in the art should be aware that, in one or more examples described above, the functions described in the embodiments of the present application can be implemented by hardware, software, firmware or any combination thereof. When implemented by software, the functions can be stored in a computer readable medium or transmitted as one or more instructions or codes on a computer readable medium. The computer readable medium includes computer storage medium and communication medium, and the communication medium includes any medium that facilitates the transfer of computer program from one place to another. The storage medium can be any available medium that can be accessed by a general or special purpose computer.

[0160] The above is only an optional embodiment of the present application, and is not used to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An electronic throttle valve ice breaking method characterized by, The method comprises: acquiring a throttle drive stage state, a speed, a motor speed, a battery voltage, a water tank temperature, and an intake temperature of a vehicle; in a case where the throttle drive stage state meets a specified condition, the speed is less than a specified vehicle speed, the motor speed is less than a specified speed, the battery voltage belongs to a specified voltage interval, the water tank temperature belongs to a first temperature interval, and the intake temperature belongs to a second temperature interval, controlling an electronic throttle valve of the vehicle to close to a first throttle opening degree; when a difference between an actual opening degree of the electronic throttle valve and the first throttle opening degree is greater than a first proportion threshold, controlling the electronic throttle valve to gradually open to a second throttle opening degree within a target time length; within the target time length, controlling the electronic throttle valve to gradually close from the second throttle opening degree to the first throttle opening degree; in a case where the actual opening degree of the electronic throttle valve reaches a target throttle opening degree, starting an engine corresponding to the electronic throttle valve; the target throttle opening degree is a throttle opening degree value of the first throttle opening degree plus a deviation threshold.

2. The method of claim 1, wherein, The method comprises: acquiring a throttle drive stage state, a speed, a motor speed, a battery voltage, a water tank temperature, and an intake temperature of a vehicle; in a case where the throttle drive stage state meets a specified condition, the speed is less than a specified vehicle speed, the motor speed is less than a specified speed, the battery voltage belongs to a specified voltage interval, the water tank temperature belongs to a first temperature interval, and the intake temperature belongs to a second temperature interval, controlling an electronic throttle valve of the vehicle to close to a first throttle opening degree; when a difference between an actual opening degree of the electronic throttle valve and the first throttle opening degree is greater than a first proportion threshold, controlling the electronic throttle valve to gradually open to a second throttle opening degree within a target time length; 3. The method of claim 2, wherein, within the target time length, controlling the electronic throttle valve to gradually close from the second throttle opening degree to the first throttle opening degree; in a case where the actual opening degree of the electronic throttle valve reaches a target throttle opening degree, starting an engine corresponding to the electronic throttle valve; the target throttle opening degree is a throttle opening degree value of the first throttle opening degree plus a deviation threshold.

4. The method of claim 1, wherein, The method comprises: acquiring a throttle drive stage state, a speed, a motor speed, a battery voltage, a water tank temperature, and an intake temperature of a vehicle; in a case where the throttle drive stage state meets a specified condition, the speed is less than a specified vehicle speed, the motor speed is less than a specified speed, the battery voltage belongs to a specified voltage interval, the water tank temperature belongs to a first temperature interval, and the intake temperature belongs to a second temperature interval, controlling an electronic throttle valve of the vehicle to close to a first throttle opening degree; when a difference between an actual opening degree of the electronic throttle valve and the first throttle opening degree is greater than a first proportion threshold, controlling the electronic throttle valve to gradually open to a second throttle opening degree within a target time length; 5. The method of claim 4, wherein, within the target time length, controlling the electronic throttle valve to gradually close from the second throttle opening degree to the first throttle opening degree; in a case where the actual opening degree of the electronic throttle valve reaches a target throttle opening degree, starting an engine corresponding to the electronic throttle valve; the target throttle opening degree is a throttle opening degree value of the first throttle opening degree plus a deviation threshold.

6. The method of claim 1, wherein, The method comprises:

7. An electronic throttle valve ice breaking device characterized by comprising: acquiring a throttle drive stage state, a speed, a motor speed, a battery voltage, a water tank temperature, and an intake temperature of a vehicle; in a case where the throttle drive stage state meets a specified condition, the speed is less than a specified vehicle speed, the motor speed is less than a specified speed, the battery voltage belongs to a specified voltage interval, the water tank temperature belongs to a first temperature interval, and the intake temperature belongs to a second temperature interval, controlling an electronic throttle valve of the vehicle to close to a first throttle opening degree; when a difference between an actual opening degree of the electronic throttle valve and the first throttle opening degree is greater than a first proportion threshold, controlling the electronic throttle valve to gradually open to a second throttle opening degree within a target time length; within the target time length, controlling the electronic throttle valve to gradually close from the second throttle opening degree to the first throttle opening degree; in a case where the actual opening degree of the electronic throttle valve reaches a target throttle opening degree, starting an engine corresponding to the electronic throttle valve; the target throttle opening degree is a throttle opening degree value of the first throttle opening degree plus a deviation threshold. The method comprises: acquiring a throttle drive stage state, a speed, a motor speed, a battery voltage, a water tank temperature, and an intake temperature of a vehicle; in a case where the throttle drive stage state meets a specified condition, the speed is less than a specified vehicle speed, the motor speed is less than a specified speed, the battery voltage belongs to a specified voltage interval, the water tank temperature belongs to a first temperature interval, and the intake temperature belongs to a second temperature interval, controlling an electronic throttle valve of the vehicle to close to a first throttle opening degree; when a difference between an actual opening degree of the electronic throttle valve and the first throttle opening degree is greater than a first proportion threshold, controlling the electronic throttle valve to gradually open to a second throttle opening degree within a target time length; within the target time length, controlling the electronic throttle valve to gradually close from the second throttle opening degree to the first throttle opening degree; in a case where the actual opening degree of the electronic throttle valve reaches a target throttle opening degree, starting an engine corresponding to the electronic throttle valve; the target throttle opening degree is a throttle opening degree value of the first throttle opening degree plus a deviation threshold. The method comprises: acquiring a throttle drive stage state, a speed, a motor speed, a battery voltage, a water tank temperature, and an intake temperature of a vehicle; in a case where the throttle drive stage state meets a specified condition, the speed is less than a specified vehicle speed, the motor speed is less than a specified speed, the battery voltage belongs to a specified voltage interval, the water tank temperature belongs to a first temperature interval, and the intake temperature belongs to a second temperature interval, controlling an electronic throttle valve of the vehicle to close to a first throttle opening degree; when a difference between an actual opening degree of the electronic throttle valve and the first throttle opening degree is greater than a first proportion threshold, controlling the electronic throttle valve to gradually open to a second throttle opening degree within a target time length; within the target time length, controlling the electronic throttle valve to gradually close from the second throttle opening degree to the first throttle opening degree; in a case where the actual opening degree of the electronic throttle valve reaches a target throttle opening degree, starting an engine corresponding to the electronic throttle valve; the target throttle opening degree is a throttle opening degree value of the first throttle opening degree plus a deviation threshold. The method comprises: acquiring a throttle drive stage state, a speed, a motor speed, a battery voltage, a water tank temperature, and an intake temperature of a vehicle; in a case where the throttle drive stage state meets a specified condition, the speed is less than a specified vehicle speed, the motor speed is less than a specified speed, the battery voltage belongs to a specified voltage interval, the water tank temperature belongs to a first temperature interval, and the intake temperature belongs to a second temperature interval, controlling an electronic throttle valve of the vehicle to close to a first throttle opening degree; when a difference between an actual opening degree of the electronic throttle valve and the first throttle opening degree is greater than a first proportion threshold, controlling the electronic throttle valve to gradually open to a second throttle opening degree within a target time length; within the target time length, controlling the electronic throttle valve to gradually close from the second throttle opening degree to the first throttle opening degree; in a case where the actual opening degree of the electronic throttle valve reaches a target throttle opening degree, starting an engine corresponding to the electronic throttle valve; the target throttle opening degree is a throttle opening degree value of the first throttle opening degree plus a deviation threshold. An electronic throttle first closing module is configured to control an electronic throttle of the vehicle to close to a first throttle opening degree when a throttle drive stage state meets a specified condition, a vehicle speed is less than a specified vehicle speed, a motor speed is less than a specified motor speed, a battery voltage belongs to a specified voltage interval, a water tank temperature belongs to a first temperature interval, and an intake air temperature belongs to a second temperature interval. An electronic throttle opening module is configured to control the electronic throttle to gradually open to a second throttle opening degree within a target time length when a difference between an actual opening degree of the electronic throttle and the first throttle opening degree is greater than a first proportional threshold. An electronic throttle second closing module is configured to control the electronic throttle to gradually close from the second throttle opening degree to the first throttle opening degree within the target time length. An engine starting module is configured to start an engine corresponding to the electronic throttle when an actual opening degree of the electronic throttle reaches a target throttle opening degree, the target throttle opening degree being a throttle opening degree value of the first throttle opening degree plus a deviation threshold.

8. A computer device, comprising: The computer device includes a processor and a memory, and the memory stores instructions executed by the processor to implement the electronic throttle de-icing method of any one of claims 1 to 6.

9. A computer-readable storage medium, characterized in that, The storage medium stores instructions executed by the processor of the computer device to implement the electronic throttle de-icing method of any one of claims 1 to 6.

10. A computer program product, characterised in that, The computer program product includes computer instructions stored in a computer readable storage medium, and the computer instructions are read and executed by the processor of the computer device to implement the electronic throttle de-icing method of any one of claims 1 to 6.

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