CN115234363B - Electric waste gate valve control method and device and vehicle - Google Patents
Electric waste gate valve control method and device and vehicle Download PDFInfo
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- CN115234363B CN115234363B CN202211005658.2A CN202211005658A CN115234363B CN 115234363 B CN115234363 B CN 115234363B CN 202211005658 A CN202211005658 A CN 202211005658A CN 115234363 B CN115234363 B CN 115234363B
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- 239000002699 waste material Substances 0.000 title claims abstract description 104
- 238000000034 method Methods 0.000 title claims abstract description 74
- 238000004364 calculation method Methods 0.000 claims description 42
- 230000008859 change Effects 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 238000012935 Averaging Methods 0.000 claims description 4
- 238000012937 correction Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 238000004590 computer program Methods 0.000 description 14
- 238000010586 diagram Methods 0.000 description 8
- 230000006870 function Effects 0.000 description 8
- 230000003287 optical effect Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000007774 longterm Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
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- 230000003068 static effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
- F02B37/12—Control of the pumps
- F02B37/18—Control of the pumps by bypassing exhaust from the inlet to the outlet of turbine or to the atmosphere
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
- F02B37/12—Control of the pumps
- F02B37/18—Control of the pumps by bypassing exhaust from the inlet to the outlet of turbine or to the atmosphere
- F02B37/183—Arrangements of bypass valves or actuators therefor
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Supercharger (AREA)
Abstract
The application provides an electric wastegate valve control method, which comprises the following steps: acquiring basic data of a vehicle; judging whether the control of the waste gate valve is required by the self-learning voltage according to the vehicle basic data, and if so, acquiring the self-learning voltage for control by an electric control waste gate valve voltage self-learning method; and sending the self-learning voltage for control to a driving motor so that the driving motor can control the waste gate valve according to the self-learning voltage. The method solves the problem that the opening of the electric waste gate valve cannot be accurately controlled by the driving motor, and further causes overlarge deformation of the driving connecting rod, realizes automatic correction of the 0-point voltage value of the driving motor when the electric waste gate valve is at the closing position (0 point), and achieves the effects of prolonging the service life of the turbocharger, improving the performance of the engine, saving energy and reducing emission.
Description
Technical Field
The application belongs to the technical field of vehicle turbochargers, and particularly relates to an electric wastegate valve control method, an electric wastegate valve control device and a vehicle.
Background
As emissions and fuel consumption regulations become increasingly stringent, energy conservation and environmental protection requirements increase and more engines match the turbo-charging technology. The improvement of the performance of the turbocharger is an important measure for improving the performance of the engine and saving energy and reducing emission.
The waste gate valve is an important part of the turbocharger, and the electric waste gate valve (E-WASTEGATE, abbreviated as EWG) has the advantages of greatly improving the performance of the traditional pneumatic control bypass valve, along with high response speed, accurate control, good stability and better economical efficiency and dynamic response characteristic.
In the prior art, 0-point voltage caused by long-term use of an electric waste gate valve and a driving connecting rod drifts, if the 0-point voltage cannot be adjusted in real time, when the driving connecting rod is worn or the driving connecting rod and the waste gate valve are expanded with heat and contracted with cold, and when the system 0-point voltage is applied, the waste gate valve cannot actually reach the preset opening degree, and further, the problem that the tappet is stressed excessively and deformed when the waste gate is fully closed, and even the possibility of the direct current motor is burnt is caused.
It is therefore desirable to have a solution that overcomes or at least alleviates at least one of the above-mentioned drawbacks of the prior art.
Disclosure of Invention
An object of the present application is to provide an electric wastegate valve control method to solve the above-described problems of at least one aspect.
In a first aspect of the present application, there is provided an electric wastegate valve control method comprising:
acquiring basic data of a vehicle;
judging whether the waste gate valve is required to be controlled by self-learning voltage according to the vehicle basic data, if so, then
Acquiring a self-learning voltage for control by an electric control waste gate voltage self-learning method;
and sending the self-learning voltage for control to a driving motor so that the driving motor can control the waste gate valve according to the self-learning voltage.
Optionally, the vehicle basic data includes:
operating state information of the electric waste gate valve;
current electric wastegate valve control mode information;
An electric wastegate position feedback signal;
engine water temperature information;
Accelerator pedal opening information;
target opening information of the electric wastegate valve;
Position feedback information of the electric wastegate valve;
The position feedback voltage change value information of the electric wastegate valve.
Optionally, the determining whether the wastegate valve needs to be controlled by the self-learning voltage according to the vehicle basic data includes:
determining whether the following conditions are met at the same time, if so, judging that the waste gate valve needs to be controlled through the self-learning voltage:
Determining that the electric waste gate valve has no power level fault according to the working state of the electric waste gate valve;
Determining that the current self-learning voltage is used as 0 point voltage to control the electric wastegate valve according to the current control mode information of the electric wastegate valve;
determining that the electric wastegate position feedback signal has no electrical fault according to the electric wastegate position feedback signal;
Determining whether the water temperature of the engine is greater than a calibration limit value according to the acquired water temperature information of the engine;
determining that the accelerator pedal opening is 100% according to the accelerator pedal opening information;
determining that the target opening of the electric wastegate valve is less than 1% according to the target opening information of the electric wastegate valve;
Determining that the position feedback of the electric wastegate valve is less than 1% according to the position feedback information of the electric wastegate valve;
and determining that the position feedback voltage change of the electric wastegate valve is smaller than a threshold value according to the position feedback voltage change value information of the electric wastegate valve.
Optionally, the learning voltage obtained by the electrically controlled wastegate voltage self-learning method includes:
setting a target opening of the electric wastegate valve to a negative value;
acquiring position feedback voltage and PID output duty ratio of the electric waste gate valve of each calculation period in preset time after setting the target opening of the electric waste gate valve to be a negative value;
Judging whether to perform voltage self-learning according to the position feedback voltage and PID output duty ratio of the electric waste gate valve in each calculation period in the preset time, if so, then
After the preset time, acquiring the position feedback voltage of the electric waste gate valve in at least two calculation periods as the voltage to be calculated;
And acquiring a dynamic 0-point self-learning voltage according to each voltage to be calculated to serve as a self-learning voltage for control.
Optionally, before each acquisition of the position feedback voltage of the electric wastegate valve of the calculation cycle as the voltage to be calculated, the electric wastegate valve control method further includes:
for each calculation cycle, the following operations are performed:
Acquiring basic data of a vehicle in a current calculation period;
Judging whether to acquire the position feedback voltage of the electric waste gate valve in the calculation period as the voltage to be calculated according to the vehicle basic data, if so, then
And acquiring the position feedback voltage of the electric waste gate valve in the calculation period as the voltage to be calculated.
Optionally, the learning voltage obtained by the electrically controlled wastegate voltage self-learning method further includes:
Acquiring a preset calibration range;
judging whether the dynamic 0-point self-learning voltage exceeds a preset calibration range, and if not, taking the dynamic 0-point self-learning voltage as the self-learning voltage for control.
Optionally, the learning voltage obtained by the electrically controlled wastegate voltage self-learning method further includes:
Acquiring a pre-stored dynamic 0-point self-learning voltage in a preset database;
Judging whether the difference between the dynamic 0-point self-learning voltage obtained according to each voltage to be calculated and the prestored dynamic 0-point self-learning voltage exceeds a preset threshold value, if so, then
And updating the preset database to obtain dynamic 0-point self-learning voltage according to each voltage to be calculated to replace the pre-stored dynamic 0-point self-learning voltage in the preset database.
Optionally, the electric wastegate valve control method further includes:
acquiring a driving connecting rod size database, wherein the driving connecting rod size database comprises driving connecting rod size information and 0-point self-learning voltage theoretical values corresponding to the driving connecting rod size information;
and acquiring the size information of the driving connecting rod corresponding to the 0-point self-learning voltage theoretical value which is the same as the self-learning voltage for control.
Optionally, the electric wastegate valve control method further includes:
Acquiring a preset drive link size threshold;
Judging whether the acquired size information of the driving connecting rod is lower than the preset size threshold value of the driving connecting rod, if yes, then
An alarm signal is generated.
The present application also provides an electric wastegate valve control apparatus comprising:
the vehicle basic data acquisition module is used for acquiring vehicle basic data;
The judging module is used for judging whether the waste gate valve is required to be controlled by the self-learning voltage according to the basic data of the vehicle;
The electric control waste gate valve voltage self-learning module is used for acquiring self-learning voltage for control through an electric control waste gate valve voltage self-learning method;
And the sending module is used for sending the self-learning voltage for control to the driving motor so that the driving motor can control the waste gate valve according to the self-learning voltage.
The application also provides a vehicle comprising:
the turbocharger comprises a driving motor, a driving connecting rod and a waste gate valve, wherein the driving motor drives the waste gate valve to rotate by driving the driving connecting rod;
And the electric wastegate valve control device is connected with the driving motor and the wastegate valve, the electric wastegate valve control device is used for acquiring a self-learning voltage for control by adopting the electric wastegate valve control method and transmitting the self-learning voltage for control to the driving motor so that the driving motor can control the wastegate valve according to the self-learning voltage.
The application has at least the following beneficial technical effects:
The control method of the electric waste gate valve can perform 0-voltage self-learning in the running process of the engine, so that the learned 0-voltage is obtained in real time, and then the electric waste gate valve is controlled by the learned 0-voltage, so as to correct the problem of 0-point voltage drift caused by long-term use of the electric waste gate valve and the driving connecting rod, thereby solving the problem that in the prior art, if the 0-point voltage cannot be adjusted in real time, when the driving connecting rod is worn or the driving connecting rod and the waste gate valve are expanded with heat or contracted with cold, the waste gate valve cannot actually reach the preset opening degree when the 0-point voltage is given to the system, and also preventing the possibility that the tappet is stressed to be excessively deformed when the waste gate valve is fully closed because the 0-point voltage is not suitable for the ideal opening degree of the waste gate valve, and even the direct current motor is burnt.
Drawings
Fig. 1 is a schematic flow chart of a control method of an electric wastegate valve according to an embodiment of the present application.
Fig. 2 is an exemplary structural diagram of an electronic device capable of implementing the electric wastegate valve control method provided according to one embodiment of the present application.
Fig. 3 is a schematic view of a turbocharger in the control method of the electric wastegate valve according to the embodiment of the present application.
Wherein reference numerals are as follows:
11, driving a motor;
12, driving a connecting rod;
13, a waste gate valve.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application become more apparent, the technical solutions in the embodiments of the present application will be described in more detail below with reference to the accompanying drawings in the embodiments of the present application. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are some, but not all, embodiments of the application. The embodiments described below by referring to the drawings are illustrative and intended to explain the present application and should not be construed as limiting the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application. Embodiments of the present application will be described in detail below with reference to the accompanying drawings.
It should be noted that in the description of the present invention, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Fig. 1 is a schematic flow chart of a control method of an electric wastegate valve according to an embodiment of the present application. Fig. 2 is an exemplary structural diagram of an electronic device capable of implementing the electric wastegate valve control method provided according to one embodiment of the present application. Fig. 3 is a schematic structural diagram of a turbocharger in a control method of an electric wastegate valve according to an embodiment of the present application, wherein, as shown in fig. 3, 11 is a driving motor, 12 is a driving link, and 13 is a wastegate valve. When the driving motor rotates, the driving motor drives the driving connecting rod to enable the wastegate valve to rotate.
The electric wastegate valve control method as shown in fig. 1 includes:
step 1: acquiring basic data of a vehicle;
step 2: judging whether the waste gate valve is required to be controlled by the self-learning voltage according to the basic data of the vehicle, and if so, acquiring the self-learning voltage for control by an electric control waste gate valve voltage self-learning method;
Step 3: the self-learning voltage for control is sent to the driving motor so that the driving motor can control the wastegate valve according to the self-learning voltage.
The control method of the electric waste gate valve can be used for adjusting the 0-point voltage of the electric waste gate valve in real time and is used for correcting the problem of 0-point voltage drift caused by long-term use of the electric waste gate valve and the driving connecting rod, so that the problem that in the prior art, if the 0-point voltage cannot be adjusted in real time, when the driving connecting rod is worn or the driving connecting rod and the waste gate valve are expanded with heat and contracted with cold, the waste gate valve cannot actually reach the preset opening degree when the system 0-point voltage is given to the waste gate valve, and the problem that the tappet is stressed excessively and deformed even the direct current motor is burnt when the waste gate valve is completely closed can be prevented.
In the present embodiment, the vehicle basic data includes:
operating state information of the electric waste gate valve;
current electric wastegate valve control mode information;
An electric wastegate position feedback signal;
engine water temperature information;
Accelerator pedal opening information;
target opening information of the electric wastegate valve;
Position feedback information of the electric wastegate valve;
The position feedback voltage change value information of the electric wastegate valve.
Further, determining whether the wastegate valve needs to be controlled by the self-learning voltage according to the vehicle basic data includes:
determining whether the following conditions are met at the same time, if so, judging that the waste gate valve needs to be controlled through the self-learning voltage:
Determining that the electric waste gate valve has no power level fault according to the working state of the electric waste gate valve;
Determining that the current self-learning voltage is used as 0 point voltage to control the electric wastegate valve according to the current control mode information of the electric wastegate valve;
determining that the electric wastegate position feedback signal has no electrical fault according to the electric wastegate position feedback signal;
Determining whether the water temperature of the engine is greater than a calibration limit value according to the acquired water temperature information of the engine;
determining that the accelerator pedal opening is 100% according to the accelerator pedal opening information;
determining that the target opening of the electric wastegate valve is less than 1% according to the target opening information of the electric wastegate valve;
Determining that the position feedback of the electric wastegate valve is less than 1% according to the position feedback information of the electric wastegate valve;
and determining that the position feedback voltage change of the electric wastegate valve is smaller than a threshold value according to the position feedback voltage change value information of the electric wastegate valve.
And determining whether the running condition of the engine belongs to a normal running and full load state by judging the conditions. In the actual use process, when the engine is in a full-load state, the valve of the electric waste gate valve is in a complete closing state, and the tappet is subjected to overlarge deformation, and even the possibility of burning of the direct-current motor is the greatest possibility. We correct for the 0 point voltage value to solve the above problem.
In this embodiment, the learning voltage obtained by the electric control wastegate voltage self-learning method includes:
setting a target opening of the electric wastegate valve to a negative value;
acquiring position feedback voltage and PID output duty ratio of the electric waste gate valve of each calculation period in preset time after setting the target opening of the electric waste gate valve to be a negative value;
Judging whether to perform voltage self-learning according to the position feedback voltage and PID output duty ratio of the electric waste gate valve in each calculation period in the preset time, if so, then
After the preset time, acquiring the position feedback voltage of the electric waste gate valve in at least two calculation periods as the voltage to be calculated;
And acquiring a dynamic 0-point self-learning voltage according to each voltage to be calculated to serve as a self-learning voltage for control.
Wherein, judging whether to perform voltage self-learning according to the position feedback voltage and PID output duty ratio of the electric waste gate valve of each calculation period in the preset time comprises:
Determining whether the following conditions are met at the same time, if yes, judging that voltage self-learning is needed:
the change of the feedback voltage of the front and back times is less than 0.05V;
The PID output duty ratio of the electric wastegate valve is 20% or more.
As is well known, in actual practice, the minimum opening degree of the electric wastegate valve is zero degrees, that is, the fully closed state. When the target opening is set to be a negative value, the driving motor drives the valve to be closed until the valve is completely closed. This step ensures that the valve is in a fully closed state.
When the duty ratio of the driving signal of the driving motor is larger than or equal to 20%, the driving signal of the driving motor is used for controlling the driving motor to further reduce the opening of the waste gate valve, and when the change of the feedback voltage is smaller than 0.05V, the opening of the waste gate valve cannot be reduced, and further, the fact that the opening of the waste gate valve is in a completely closed state at the moment is verified. The preset time is generally 0.1 second, and can be adjusted at any time according to specific conditions.
The step of obtaining the dynamic 0-point self-learning voltage according to each voltage to be calculated comprises the following steps:
setting a plurality of calculation periods, and obtaining 0-point voltage after the last period is finished to obtain dynamic 0-point self-learning voltage;
A plurality of calculation periods, wherein each calculation period adopts the following method to obtain 0 point voltage:
And averaging the voltages to be calculated in two continuous periods, and assigning the average value to the 0-point voltage.
For example, 5 calculation periods are set to B, C, D, E, F, feedback voltages of the 5 calculation periods are set to B1, C1, D1, E1, F1, respectively, and a feedback voltage of a previous period of the B period is set to A1. From this, the new 0 point voltage calculated in the B period is b2= (a1+b1)/2; the new 0 point voltage B2 is sent to the electric waste gate valve in the C period to obtain a feedback voltage C1, and the new 0 point voltage calculated in the C period is C2= (B1+C1)/2; the new 0-point voltage C2 is sent to the electric waste gate valve in the period D to obtain a feedback voltage D1, and the new 0-point voltage calculated in the period D is d2= (C1+D1)/2; the new 0-point voltage D2 is sent to the electric waste gate valve in the E period to obtain a feedback voltage E1, and the new 0-point voltage calculated in the E period is E2= (D1+E1)/2; the new 0-point voltage E2 is sent to the electric waste gate valve in the F period to obtain a feedback voltage F1, and the new 0-point voltage calculated in the F period is F2= (E1+F1)/2; finally, a new 0-point voltage F2 is obtained.
Through the continuous experimental verification of the applicant, the 0-point voltage can be rapidly and accurately determined by using the method of averaging for multiple times, so that the 0-point voltage correction of the engine under the extreme working condition is met, the engine works more stably, and the power output is smoother.
In the present embodiment, before the position feedback voltage of the electric wastegate valve of each calculation cycle is acquired as the voltage to be calculated, the electric wastegate valve control method further includes:
for each calculation cycle, the following operations are performed:
Acquiring basic data of a vehicle in a current calculation period;
Judging whether to acquire the position feedback voltage of the electric waste gate valve in the calculation period as the voltage to be calculated according to the vehicle basic data, if so, then
And acquiring the position feedback voltage of the electric waste gate valve in the calculation period as the voltage to be calculated.
The current vehicle state needs to be detected before each calculation to ensure that the state of the current vehicle is in a state meeting the calculation requirement, thereby ensuring the accuracy of calculation.
In this embodiment, the obtaining the self-learning voltage by the electrically controlled wastegate voltage self-learning method further includes:
Acquiring a preset calibration range;
Judging whether the dynamic 0-point self-learning voltage exceeds a preset calibration range, and if not, taking the dynamic 0-point self-learning voltage as the self-learning voltage for control.
The obtaining of the self-learning voltage by the electrically controlled wastegate voltage self-learning method further includes:
Acquiring a pre-stored dynamic 0-point self-learning voltage in a preset database;
judging whether the difference between the dynamic 0-point self-learning voltage obtained according to each voltage to be calculated and the prestored dynamic 0-point self-learning voltage exceeds a preset threshold value, if so, then
Updating the preset database to obtain dynamic 0-point self-learning voltage according to each voltage to be calculated to replace the prestored dynamic 0-point self-learning voltage in the preset database.
The preset evaluation condition may be a threshold value, for example, the threshold value is set to 0.1 volt, and when the difference between the self-learning voltage and the original 0 point voltage is greater than 0.1 volt, the value is evaluated to the ROM instead of the original 0 point voltage. When the difference value is smaller than the threshold value, the ROM data is not stored, so that the ROM data is prevented from being read and written frequently, and excessive ROM resources are occupied.
A reasonable 0-point voltage range is generally preset, and when the new 0-point voltage exceeds the range, for example: the preset range is 0V-5V, the 0 point self-learning voltage obtained at this time is 6V, the stopping reason is reported, and the subsequent steps are terminated. When the new 0 point voltage is within the range, the new 0 point voltage is assigned to the ROM instead of the original 0 point voltage only if the difference between the new 0 point voltage and the original 0 point voltage is greater than a threshold value, compared with the original 0 point voltage. When the difference value is smaller than the threshold value, the ROM data is not stored, so that the ROM data is prevented from being read and written frequently, and excessive ROM resources are occupied.
In the present embodiment, the electric wastegate valve control method further includes:
Acquiring a driving connecting rod size database, wherein the driving connecting rod size database comprises driving connecting rod size information and 0-point self-learning voltage theoretical values corresponding to the driving connecting rod size information;
and acquiring the size information of the driving connecting rod corresponding to the 0-point self-learning voltage theoretical value which is the same as the self-learning voltage for control.
For example, the drive link size database may be a one-dimensional graph based on turbine casing temperatures that is experimentally derived from voltage information for normal 0-point voltages at different turbine casing temperatures.
In an embodiment, the electric wastegate valve control method further includes:
Acquiring a preset drive link size threshold;
Judging whether the acquired size information of the driving connecting rod is lower than a preset size threshold value of the driving connecting rod, if yes, then
An alarm signal is generated.
Specifically, the temperature of the turbocharger housing at the current moment can be recorded when dynamic self-learning is successful, the self-learned zero voltage value is compared with a preset one-dimensional graph based on the temperature of the turbocharger housing, and when the absolute value of the difference is larger than a calibration limit value (such as 0.3V), an alarm signal is generated.
The method can rapidly and accurately judge whether the connecting rod is deformed or not and the deformation amount, and alarm is given when the deformation amount exceeds a preset value, so that more serious engine damage caused by the deformation of the connecting rod is avoided.
In the prior art, due to factors such as thermal expansion, cold contraction, aging deformation and the like, the closing position (0 point) of the waste gate valve is deviated, if the deviation is not corrected in time, the problem of performance difference in the working process of the supercharger can be caused, and when the waste gate valve is seriously closed, the tappet is stressed to be excessively deformed, and even the possibility of direct current motor burning is caused. The method solves the problem that the opening of the electric waste gate valve cannot be accurately controlled by the driving motor, and further causes overlarge deformation of the driving connecting rod, realizes automatic correction of the 0-point voltage value of the driving motor when the electric waste gate valve is at the closing position (0 point), and achieves the effects of prolonging the service life of the turbocharger, improving the performance of the engine, saving energy and reducing emission. Furthermore, the alarm can be given in time after the connecting rod is deformed, so that the damage to other parts of the engine caused by the deformation of the connecting rod is avoided.
The present application also provides an electric wastegate valve control apparatus, comprising:
The vehicle basic data acquisition module is used for acquiring vehicle basic data;
The judging module is used for judging whether the waste gate valve is required to be controlled by the self-learning voltage according to the basic data of the vehicle;
the electric control waste gate valve voltage self-learning module is used for acquiring self-learning voltage for control through an electric control waste gate valve voltage self-learning method;
And the sending module is used for sending the self-learning voltage for control to the driving motor so that the driving motor can control the waste gate valve according to the self-learning voltage.
The application also provides a vehicle, comprising:
The turbocharger comprises a driving motor, a driving connecting rod and a waste gate valve, wherein the driving motor drives the waste gate valve to rotate through the driving connecting rod;
And the electric wastegate valve control device is connected with the driving motor and the wastegate valve, and is used for acquiring the self-learning voltage for control by adopting the electric wastegate valve control method and transmitting the self-learning voltage for control to the driving motor so that the driving motor can control the wastegate valve according to the self-learning voltage.
The application also provides an electronic device comprising a memory, a processor and a computer program stored in the memory and capable of running on the processor, the processor executing the computer program to implement the electric wastegate valve control method as above. It will be appreciated that the electronic device may be the overall controller described above.
The present application also provides a computer-readable storage medium storing a computer program which, when executed by a processor, is capable of realizing the above electric wastegate valve control method.
Fig. 2 is an exemplary structural diagram of an electronic device capable of implementing the electric wastegate valve control method provided according to one embodiment of the present application.
As shown in fig. 2, the electronic device includes an input device 501, an input interface 502, a central processor 503, a memory 504, an output interface 505, an output device 506, and a bus 507. The input interface 502, the central processing unit 503, the memory 504, and the output interface 505 are connected to each other through a bus 507, and the input device 501 and the output device 506 are connected to the bus 507 through the input interface 502 and the output interface 505, respectively, and further connected to other components of the electronic device. Specifically, the input device 501 receives input information from the outside, and transmits the input information to the central processor 503 through the input interface 502; the central processor 503 processes the input information based on computer executable instructions stored in the memory 504 to generate output information, temporarily or permanently stores the output information in the memory 504, and then transmits the output information to the output device 506 through the output interface 505; the output device 506 outputs the output information to the outside of the electronic device for use by the user.
That is, the electronic device shown in fig. 2 may also be implemented to include: a memory storing computer-executable instructions; and one or more processors that, when executing the computer-executable instructions, implement the electric wastegate valve control method described in connection with fig. 1.
In one embodiment, the electronic device shown in FIG. 2 may be implemented to include: a memory 504 configured to store executable program code; the one or more processors 503 are configured to execute the executable program code stored in the memory 504 to perform the electric wastegate valve control method in the above-described embodiments.
In one typical configuration, a computing device includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory.
The memory may include volatile memory in a computer-readable medium, random Access Memory (RAM) and/or nonvolatile memory, such as Read Only Memory (ROM) or flash memory (flash RAM). Memory is an example of computer-readable media.
Computer-readable media include both permanent and non-permanent, removable and non-removable media, and the media may be implemented in any method or technology for storage of information. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of storage media for a computer include, but are not limited to, phase change memory (PRAM), static Random Access Memory (SRAM), dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), read Only Memory (ROM), electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape disk storage or other magnetic storage devices, or any other non-transmission medium, which can be used to store information that can be accessed by a computing device.
It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
Furthermore, it is evident that the word "comprising" does not exclude other elements or steps. A plurality of units, modules or means recited in the apparatus claims can also be implemented by means of software or hardware by means of one unit or total means.
The flowcharts and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present application. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
The Processor referred to in this embodiment may be a central processing unit (Central Processing Unit, CPU), or other general purpose Processor, digital signal Processor (DIGITAL SIGNAL Processor, DSP), application SPECIFIC INTEGRATED Circuit (ASIC), off-the-shelf Programmable gate array (Field-Programmable GATE ARRAY, FPGA) or other Programmable logic device, discrete gate or transistor logic device, discrete hardware component, or the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The memory may be used to store computer programs and/or modules, and the processor may perform various functions of the apparatus/terminal device by executing or executing the computer programs and/or modules stored in the memory, and invoking data stored in the memory. The memory may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program (such as a sound playing function, an image playing function, etc.) required for at least one function, and the like; the storage data area may store data (such as audio data, phonebook, etc.) created according to the use of the handset, etc. In addition, the memory may include high-speed random access memory, and may also include non-volatile memory, such as a hard disk, memory, plug-in hard disk, smart memory card (SMART MEDIA CARD, SMC), secure Digital (SD) card, flash memory card (FLASH CARD), at least one disk storage device, flash memory device, or other volatile solid-state storage device.
In this embodiment, the modules/units of the apparatus/terminal device integration may be stored in a computer readable storage medium if implemented in the form of software functional units and sold or used as a separate product. Based on such understanding, the present application may implement all or part of the flow of the method of the above-described embodiments, or may be implemented by a computer program that, when executed by a processor, implements the steps of the method embodiments described above. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, executable files or in some intermediate form, etc. The computer readable medium may include: any entity or device capable of carrying computer program code, a recording medium, a U disk, a removable hard disk, a magnetic disk, an optical disk, a computer Memory, a Read-Only Memory (ROM), a random access Memory (RAM, randomAccess Memory), an electrical carrier signal, a telecommunications signal, a software distribution medium, and so forth. While the application has been described in terms of preferred embodiments, it is not intended to limit the application thereto, and any person skilled in the art can make variations and modifications without departing from the spirit and scope of the present application, and therefore the scope of the application is to be determined from the appended claims.
It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
Finally, it should be pointed out that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting. Although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A control method of an electric waste gate valve is characterized in that, the electric wastegate valve control method includes:
acquiring basic data of a vehicle;
judging whether the waste gate valve is required to be controlled by self-learning voltage according to the vehicle basic data, if so, then
Acquiring a self-learning voltage for control by an electric control waste gate voltage self-learning method;
The self-learning voltage for control is sent to a driving motor, so that the driving motor controls the waste gate valve according to the self-learning voltage;
the self-learning method for obtaining the self-learning voltage through the electric control waste gate valve voltage comprises the following steps:
setting a target opening of the electric wastegate valve to a negative value;
acquiring position feedback voltage and PID output duty ratio of the electric waste gate valve of each calculation period in preset time after setting the target opening of the electric waste gate valve to be a negative value;
Judging whether to perform voltage self-learning according to the position feedback voltage and PID output duty ratio of the electric waste gate valve in each calculation period in the preset time, if so, then
After the preset time, acquiring the position feedback voltage of the electric waste gate valve in at least two calculation periods as the voltage to be calculated;
Acquiring a dynamic 0-point self-learning voltage as a self-learning voltage for control according to each voltage to be calculated;
The step of obtaining the dynamic 0-point self-learning voltage according to each voltage to be calculated comprises the following steps:
setting a plurality of calculation periods, and obtaining 0-point voltage after the last period is finished to obtain dynamic 0-point self-learning voltage;
A plurality of calculation periods, wherein each calculation period adopts the following method to obtain 0 point voltage:
And averaging the voltages to be calculated in two continuous periods, and assigning the average value to the 0-point voltage.
2. The electric wastegate valve control method according to claim 1, wherein the vehicle basic data includes:
operating state information of the electric waste gate valve;
current electric wastegate valve control mode information;
An electric wastegate position feedback signal;
engine water temperature information;
Accelerator pedal opening information;
target opening information of the electric wastegate valve;
Position feedback information of the electric wastegate valve;
The position feedback voltage change value information of the electric wastegate valve.
3. The electric wastegate valve control method according to claim 2, wherein the determining whether the wastegate valve needs to be controlled by a self-learning voltage based on the vehicle basic data comprises:
determining whether the following conditions are met at the same time, if so, judging that the waste gate valve needs to be controlled through the self-learning voltage:
Determining that the electric waste gate valve has no power level fault according to the working state of the electric waste gate valve;
Determining that the current self-learning voltage is used as 0 point voltage to control the electric wastegate valve according to the current control mode information of the electric wastegate valve;
determining that the electric wastegate position feedback signal has no electrical fault according to the electric wastegate position feedback signal;
determining from acquired engine water temperature information the water temperature of the engine is larger than the calibration limit value;
determining that the accelerator pedal opening is 100% according to the accelerator pedal opening information;
determining that the target opening of the electric wastegate valve is less than 1% according to the target opening information of the electric wastegate valve;
Determining that the position feedback of the electric wastegate valve is less than 1% according to the position feedback information of the electric wastegate valve;
and determining that the position feedback voltage change of the electric wastegate valve is smaller than a threshold value according to the position feedback voltage change value information of the electric wastegate valve.
4. The electric wastegate valve control method according to claim 1, wherein the electric wastegate valve control method further includes, before each acquisition of the position feedback voltage of the electric wastegate valve of the calculation cycle as the voltage to be calculated:
for each calculation cycle, the following operations are performed:
Acquiring basic data of a vehicle in a current calculation period;
Judging whether to acquire the position feedback voltage of the electric waste gate valve in the calculation period as the voltage to be calculated according to the vehicle basic data, if so, then
And acquiring the position feedback voltage of the electric waste gate valve in the calculation period as the voltage to be calculated.
5. The electric wastegate valve control method according to claim 1, wherein the obtaining from the learning voltage by the electric control wastegate valve voltage self-learning method further comprises:
Acquiring a preset calibration range;
judging whether the dynamic 0-point self-learning voltage exceeds a preset calibration range, and if not, taking the dynamic 0-point self-learning voltage as the self-learning voltage for control.
6. The electric wastegate valve control method according to claim 5, wherein the obtaining from the learned voltage by the electric control wastegate valve voltage self-learning method further comprises:
Acquiring a pre-stored dynamic 0-point self-learning voltage in a preset database;
Judging whether the difference between the dynamic 0-point self-learning voltage obtained according to each voltage to be calculated and the prestored dynamic 0-point self-learning voltage exceeds a preset threshold value, if so, then
And updating the preset database to obtain dynamic 0-point self-learning voltage according to each voltage to be calculated to replace the pre-stored dynamic 0-point self-learning voltage in the preset database.
7. The electric wastegate valve control method according to any one of claims 1 to 5, further comprising:
acquiring a driving connecting rod size database, wherein the driving connecting rod size database comprises driving connecting rod size information and 0-point self-learning voltage theoretical values corresponding to the driving connecting rod size information;
and acquiring the size information of the driving connecting rod corresponding to the 0-point self-learning voltage theoretical value which is the same as the self-learning voltage for control.
8. The control method of an electric wastegate valve according to claim 7, the electric wastegate valve control method is characterized by further comprising:
Acquiring a preset drive link size threshold;
Judging whether the acquired size information of the driving connecting rod is lower than the preset size threshold value of the driving connecting rod, if yes, then
An alarm signal is generated.
9. An electric wastegate valve control apparatus is characterized in that, the electric wastegate valve control apparatus includes:
the vehicle basic data acquisition module is used for acquiring vehicle basic data;
The judging module is used for judging whether the waste gate valve is required to be controlled by the self-learning voltage according to the basic data of the vehicle;
The electric control waste gate valve voltage self-learning module is used for acquiring self-learning voltage for control through an electric control waste gate valve voltage self-learning method;
the self-learning method for obtaining the self-learning voltage through the electric control waste gate valve voltage comprises the following steps:
setting a target opening of the electric wastegate valve to a negative value;
acquiring position feedback voltage and PID output duty ratio of the electric waste gate valve of each calculation period in preset time after setting the target opening of the electric waste gate valve to be a negative value;
Judging whether to perform voltage self-learning according to the position feedback voltage and PID output duty ratio of the electric waste gate valve in each calculation period in the preset time, if so, then
After the preset time, acquiring the position feedback voltage of the electric waste gate valve in at least two calculation periods as the voltage to be calculated;
Acquiring a dynamic 0-point self-learning voltage as a self-learning voltage for control according to each voltage to be calculated;
The step of obtaining the dynamic 0-point self-learning voltage according to each voltage to be calculated comprises the following steps:
setting a plurality of calculation periods, and obtaining 0-point voltage after the last period is finished to obtain dynamic 0-point self-learning voltage;
A plurality of calculation periods, wherein each calculation period adopts the following method to obtain 0 point voltage:
averaging the voltages to be calculated in two continuous periods and then assigning the average value to the 0-point voltage;
and the sending module is used for sending the self-learning voltage for control to the driving motor so that the driving motor can control the waste gate valve according to the self-learning voltage.
10. A vehicle, characterized in that the vehicle comprises:
the turbocharger comprises a driving motor, a driving connecting rod and a waste gate valve, wherein the driving motor drives the waste gate valve to rotate by driving the driving connecting rod;
An electric wastegate valve control apparatus linked with the drive motor and the wastegate valve, the electric wastegate valve control apparatus according to claim 9, the electric wastegate valve control apparatus being configured to acquire a control self-learning voltage by the electric wastegate valve control method according to any one of claims 1 to 8, and transmit the control self-learning voltage to the drive motor so that the drive motor controls the wastegate valve according to the self-learning voltage.
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| CN202211005658.2A CN115234363B (en) | 2022-08-22 | 2022-08-22 | Electric waste gate valve control method and device and vehicle |
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| CN202211005658.2A CN115234363B (en) | 2022-08-22 | 2022-08-22 | Electric waste gate valve control method and device and vehicle |
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|---|---|---|---|---|
| CN106677912A (en) * | 2015-11-06 | 2017-05-17 | 联合汽车电子有限公司 | Novel method for acquiring zero position of electric waste gate of turbocharged engine in real time |
| CN112832874A (en) * | 2020-05-09 | 2021-05-25 | 长城汽车股份有限公司 | Nozzle ring position self-learning method and nozzle ring opening determining method and device |
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| JPS56167814A (en) * | 1980-05-28 | 1981-12-23 | Hitachi Ltd | Apparatus and method for controlling supercharger of internal combustion engine |
| GB2505918A (en) * | 2012-09-14 | 2014-03-19 | Gm Global Tech Operations Inc | Method of Controlling an Electromagnetic Valve of a Fuel Injection System |
| CN107614846B (en) * | 2015-06-02 | 2020-05-05 | 三菱电机株式会社 | Control device for internal combustion engine |
| JP6275181B2 (en) * | 2016-03-24 | 2018-02-07 | 株式会社Ｓｕｂａｒｕ | Electric wastegate valve controller |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106677912A (en) * | 2015-11-06 | 2017-05-17 | 联合汽车电子有限公司 | Novel method for acquiring zero position of electric waste gate of turbocharged engine in real time |
| CN112832874A (en) * | 2020-05-09 | 2021-05-25 | 长城汽车股份有限公司 | Nozzle ring position self-learning method and nozzle ring opening determining method and device |
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