CN115977748B - Control method and device of nozzle ring, electronic equipment and storage medium - Google Patents
Control method and device of nozzle ring, electronic equipment and storage medium Download PDFInfo
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- CN115977748B CN115977748B CN202310260117.2A CN202310260117A CN115977748B CN 115977748 B CN115977748 B CN 115977748B CN 202310260117 A CN202310260117 A CN 202310260117A CN 115977748 B CN115977748 B CN 115977748B
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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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Abstract
The application discloses a control method and device of a nozzle ring, electronic equipment and a storage medium, wherein the method comprises the following steps: acquiring current target gas pressure and current actual gas pressure of an exhaust pipe of an engine of a target vehicle in real time; determining a current nozzle opening correction parameter according to the current target gas pressure and the current actual gas pressure; according to the current target working condition parameters of the engine of the target vehicle, inquiring the current nozzle basic opening corresponding to each nozzle group from a nozzle basic opening map corresponding to each nozzle group of the nozzle ring of the turbocharger of the pre-configured target vehicle; correcting the current nozzle basic opening corresponding to each nozzle group by using the current nozzle correction parameters to obtain the current nozzle target opening corresponding to each nozzle group; and adjusting the opening degree of each nozzle in the nozzle group to the current nozzle target opening degree corresponding to the nozzle group for each nozzle group.
Description
Technical Field
The present disclosure relates to the field of vehicle control technologies, and in particular, to a method and an apparatus for controlling a nozzle ring, an electronic device, and a storage medium.
Background
The current intake mode of an engine of a vehicle is mainly divided into natural aspiration and turbocharging. The air intake mode of the turbocharging is realized through a turbocharger, and particularly, exhaust gas discharged by an engine is discharged into a turbine through an exhaust pipe. Then, the exhaust gas is accelerated by a nozzle ring consisting of a plurality of nozzles in the turbine and then blown to an impeller in the turbine, so that the impeller drives a gas compressor connected through a transmission shaft to rotate, and the gas compressor sucks air and compresses the air and then sends the air into an engine.
Because the air entering the engine is required to be different under different running conditions of the vehicle, and the opening degree of the nozzle on the nozzle ring of the turbine can be known to be changed based on the working principle of the turbocharger, and the air inlet of the engine can be adjusted, the opening degree of the nozzle on the nozzle ring needs to be adjusted according to the running condition of the vehicle. Currently, the opening of a nozzle corresponding to the air inflow is queried according to the air inflow of a compressor, and the opening of each nozzle on a nozzle ring is adjusted to be the queried opening.
However, as the exhaust gas enters the turbine through the exhaust pipe, it is affected by the turbine housing, so that the exhaust gas flows unevenly. In the existing mode, all nozzles on the nozzle ring are uniformly controlled, so that the blade angles of part of the nozzles cannot be well adapted to the airflow direction, and therefore, larger loss is caused to the energy of waste gas, and the overall performance of the turbocharger is affected.
Disclosure of Invention
Based on the defects in the prior art, the application provides a control method and device of a nozzle ring, electronic equipment and a storage medium, so as to solve the problem that the energy of waste gas is greatly lost in the existing control method of the nozzle ring, and the overall performance of a turbocharger is affected.
In order to achieve the above object, the present application provides the following technical solutions:
the first aspect of the present application provides a method for controlling a nozzle ring, including:
acquiring current target gas pressure and current actual gas pressure of an exhaust pipe of an engine of a target vehicle in real time;
determining a current nozzle opening correction parameter according to the current target gas pressure and the current actual gas pressure;
according to the current target working condition parameters of the engine of the target vehicle, inquiring the current nozzle basic opening corresponding to each nozzle group from a pre-configured nozzle basic opening map corresponding to each nozzle group of a nozzle ring of a turbocharger of the target vehicle; dividing each nozzle in the nozzle ring in advance to obtain each nozzle group; one of the nozzle groups includes at least one nozzle in the nozzle ring; the basic opening degree diagrams of the nozzles corresponding to the nozzle groups are obtained through experiments in advance;
correcting the current nozzle basic opening corresponding to each nozzle group by using the current nozzle correction parameters to obtain the current nozzle target opening corresponding to each nozzle group;
and adjusting the opening degree of each nozzle in the nozzle group to the current nozzle target opening degree corresponding to the nozzle group for each nozzle group.
Optionally, in the above method for controlling a nozzle ring, the acquiring, in real time, a current target gas pressure and a current actual gas pressure of an exhaust pipe of an engine of a target vehicle includes:
acquiring current designated working condition parameters of an engine of the target vehicle and the current actual gas pressure in an exhaust pipe of the engine of the target vehicle acquired by a sensor in real time;
according to the current appointed working condition parameters of the engine of the target vehicle, the exhaust pipe gas pressure corresponding to the appointed working condition parameters of the engine is searched out from a pre-configured exhaust pipe gas pressure diagram;
and determining the gas pressure of the exhaust pipe corresponding to the specified working condition parameter of the engine as the current target gas pressure.
Optionally, in the above method for controlling a nozzle ring, the determining a current nozzle opening correction parameter according to the current target gas pressure and the current actual gas pressure includes:
calculating the difference value between the current target gas pressure and the current actual gas pressure to obtain a current gas pressure difference value of an exhaust pipe of the engine;
inquiring the nozzle correction opening corresponding to the current gas pressure difference from a pre-configured nozzle correction opening map;
and determining the nozzle correction opening corresponding to the current gas pressure difference as the current nozzle opening correction parameter.
Optionally, in the above method for controlling a nozzle ring, the correcting the current nozzle base opening corresponding to each nozzle group by using the current nozzle correction parameter to obtain the current nozzle target opening corresponding to each nozzle group includes:
and adding the current nozzle correction parameters with the current nozzle basic opening corresponding to each nozzle group to obtain the current nozzle target opening corresponding to each nozzle group.
Optionally, in the above method for controlling a nozzle ring, the current target operating condition parameter of the engine includes a rotation speed and an injection quantity of the engine, and the querying, according to the current target operating condition parameter of the engine of the target vehicle, a current nozzle base opening corresponding to each nozzle group from a nozzle base opening map corresponding to each nozzle group of a pre-configured nozzle ring of a turbocharger of the target vehicle includes:
for each nozzle basic opening degree diagram, searching a nozzle basic opening degree corresponding to the rotating speed and the fuel injection quantity of the engine at the same time from the nozzle basic opening degree diagram;
and determining the searched nozzle basic opening as the current nozzle basic opening corresponding to the nozzle group corresponding to the nozzle basic opening map.
Optionally, in the above method for controlling a nozzle ring, the adjusting, for each of the nozzle groups, the opening of each nozzle in the nozzle group to the current nozzle target opening corresponding to the nozzle group includes:
determining a blade angle corresponding to a current nozzle target opening corresponding to each nozzle group;
and adjusting the angle of the turbine blade corresponding to each nozzle in the nozzle group to the blade angle corresponding to the current nozzle target opening corresponding to the determined nozzle group through the control device corresponding to the nozzle group, so as to adjust the opening of each nozzle in the nozzle group to the current nozzle target opening corresponding to the nozzle group.
A second aspect of the present application provides a control device for a nozzle ring, including:
an acquisition unit for acquiring a current target gas pressure and a current actual gas pressure of an exhaust pipe of an engine of a target vehicle in real time;
a correction parameter determining unit, configured to determine a current nozzle opening correction parameter according to the current target gas pressure and the current actual gas pressure;
a basic opening determining unit, configured to query, according to a current target working condition parameter of the engine of the target vehicle, a current nozzle basic opening corresponding to each nozzle group from a nozzle basic opening map corresponding to each nozzle group of a nozzle ring of a pre-configured turbocharger of the target vehicle; dividing each nozzle in the nozzle ring in advance to obtain each nozzle group; one of the nozzle groups includes at least one nozzle in the nozzle ring; the basic opening degree diagrams of the nozzles corresponding to the nozzle groups are obtained through experiments in advance;
the opening correction unit is used for correcting the current nozzle basic opening corresponding to each nozzle group by utilizing the current nozzle correction parameters to obtain the current nozzle target opening corresponding to each nozzle group;
and the opening control unit is used for adjusting the opening of each nozzle in the nozzle group to the current nozzle target opening corresponding to the nozzle group for each nozzle group.
Optionally, in the control device for a nozzle ring, the acquiring unit includes:
the parameter acquisition unit is used for acquiring current specified working condition parameters of the engine of the target vehicle and the current actual gas pressure in the exhaust pipe of the engine of the target vehicle, which is acquired by the sensor, in real time;
the pressure query unit is used for searching the exhaust pipe gas pressure corresponding to the specified working condition parameter of the engine from a pre-configured exhaust pipe gas pressure map according to the current specified working condition parameter of the engine of the target vehicle;
and the pressure determining unit is used for determining the exhaust pipe gas pressure corresponding to the specified working condition parameter of the engine as the current target gas pressure.
Optionally, in the control device for a nozzle ring, the correction parameter determining unit includes:
the differential pressure calculation unit is used for calculating the difference value between the current target gas pressure and the current actual gas pressure to obtain the current gas pressure difference value of the exhaust pipe of the engine;
a first opening inquiring unit, configured to inquire a nozzle correction opening corresponding to the current gas pressure difference from a pre-configured nozzle correction opening map;
and the first opening determining unit is used for determining the nozzle correction opening corresponding to the current gas pressure difference value as the current nozzle opening correction parameter.
Optionally, in the above-described control device for a nozzle ring, the opening correction unit includes:
and the opening correction subunit is used for respectively adding the current nozzle correction parameters with the current nozzle basic opening corresponding to each nozzle group to obtain the current nozzle target opening corresponding to each nozzle group.
Optionally, in the above control device for a nozzle ring, the current target operating condition parameter of the engine includes a rotation speed of the engine and an injection amount, and the base opening determining unit includes:
a second opening inquiry unit configured to find, for each of the nozzle base opening maps, a nozzle base opening corresponding to the rotation speed and the injection amount of the engine at the same time from the nozzle base opening maps;
and the second opening determining unit is used for determining the searched nozzle basic opening as the current nozzle basic opening corresponding to the nozzle group corresponding to the nozzle basic opening map.
Optionally, in the control device for a nozzle ring, the control unit includes:
an angle determining unit, configured to determine, for each nozzle group, a blade angle corresponding to a current nozzle target opening corresponding to the nozzle group;
and the angle adjusting unit is used for adjusting the angle of the turbine blade corresponding to each nozzle in the nozzle group to the blade angle corresponding to the current nozzle target opening corresponding to the determined nozzle group through the control device corresponding to the nozzle group so as to adjust the opening of each nozzle in the nozzle group to the current nozzle target opening corresponding to the nozzle group.
A third aspect of the present application provides an electronic device, comprising:
a memory and a processor;
wherein the memory is used for storing programs;
the processor is configured to execute the program, and when the program is executed, the program is specifically configured to implement the method for controlling a nozzle ring according to any one of the above.
A fourth aspect of the present application provides a computer storage medium storing a computer program which, when executed, is adapted to carry out a method of controlling a nozzle ring as claimed in any one of the preceding claims.
The embodiment of the application provides a control method of a nozzle ring, wherein each nozzle in the nozzle ring is divided into a plurality of nozzle groups in advance, and each nozzle group at least comprises one nozzle in the nozzle ring so as to independently control each nozzle group. And obtaining a nozzle basic opening degree diagram of the nozzle basic opening degree of the engine under different target working condition parameters through experiments in advance, so that the basic opening degrees corresponding to the nozzle groups when the energy loss of the nozzle ring to the airflow is lowest under the different target working condition parameters can be determined through experiments. Therefore, according to the current target working condition parameters of the engine of the target vehicle, the current nozzle base opening corresponding to each nozzle group can be queried from the nozzle base opening corresponding to each nozzle group of the nozzle ring of the turbocharger of the pre-configured target vehicle. And the current target gas pressure and the current actual gas pressure of the exhaust pipe of the engine of the target vehicle are obtained in real time, and the current nozzle opening correction parameter is determined according to the current target gas pressure and the current actual gas pressure, so that theoretical and actual correction parameters are obtained. And finally, the opening degree of each nozzle in the nozzle group is adjusted to the current nozzle target opening degree corresponding to the nozzle group according to each nozzle group, so that the independent control of each nozzle group is realized, the opening degree of the nozzle in each nozzle group can be well adapted to the air flow, the loss of air flow energy is reduced, and the overall performance of the turbocharger is effectively improved.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present application, and that other drawings may be obtained according to the provided drawings without inventive effort to a person skilled in the art.
FIG. 1 is a flow chart of a method for controlling a nozzle ring according to an embodiment of the present disclosure;
FIG. 2 is a flow chart of a method for providing a current target gas pressure and a current actual gas pressure according to an embodiment of the present application;
FIG. 3 is a flowchart of a method for determining a current nozzle opening correction parameter according to an embodiment of the present disclosure;
fig. 4 is a flowchart of a method for querying a current nozzle base opening corresponding to each nozzle group according to an embodiment of the present application;
FIG. 5 is a flow chart of a method for adjusting the opening of each nozzle in a nozzle set according to an embodiment of the present disclosure;
FIG. 6 is a schematic diagram of a control device for a nozzle ring according to an embodiment of the present disclosure;
fig. 7 is a schematic architecture diagram of an electronic device according to an embodiment of the present application.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
In this application, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The embodiment of the application provides a control method of a nozzle ring, as shown in fig. 1, specifically including the following steps:
s101, acquiring the current target gas pressure and the current actual gas pressure of an exhaust pipe of an engine of a target vehicle in real time.
It should be noted that, under different working conditions, the engine of the vehicle is under different working conditions, and the pressure of the exhaust gas entering the turbine through the exhaust pipe is different, and the difference of the pressure of the exhaust gas may cause the difference of the flow characteristics of the exhaust gas in the turbine. Therefore, according to the working condition of the engine, the theoretical pressure of the engine of the target vehicle under the current working condition can be obtained, namely the current target gas pressure of the exhaust pipe of the engine of the target vehicle is obtained. However, due to various factors, the pressure of the exhaust gas in turn may be different from the actual pressure, and thus it is also necessary to obtain the current actual gas pressure of the exhaust pipe of the engine of the target vehicle.
From the current target gas pressure and the current actual gas pressure of the exhaust pipe of the engine of the target vehicle, it is apparent that a correction parameter between the theoretical and the actual parameter can be obtained. The gas pressure of the exhaust pipe can reflect the characteristic of the gas entering the turbine, so that the opening degree of the nozzle is influenced, so that by acquiring the current target gas pressure and the current actual gas pressure of the exhaust pipe of the engine of the target vehicle, one correction parameter of the theoretical opening degree of the nozzle, namely the correction of the basic opening degree of the nozzle, can be acquired, and the current target gas pressure and the current actual gas pressure of the exhaust pipe of the engine of the target vehicle need to be acquired in real time.
Optionally, in another embodiment of the present application, a specific implementation manner of step S101, as shown in fig. 2, includes:
s201, acquiring current designated working condition parameters of an engine of the target vehicle in real time and current actual gas pressure in an exhaust pipe of the engine of the target vehicle acquired by a sensor.
The specified working condition parameters are specified parameters capable of reflecting the working condition of the engine. Optionally, the current specified working condition parameter may be specifically the rotation speed of the engine and the fuel injection quantity, so as to avoid acquiring more parameters.
Because the theoretical gas of the exhaust pipe is different under different working conditions of the engine, in the embodiment of the application, different working conditions are reflected through the specified working condition parameters, so that the current specified working condition parameters of the engine of the target vehicle need to be obtained.
For the actual gas pressure, in the embodiment of the application, the current actual gas pressure in the exhaust pipe of the engine of the target vehicle is directly acquired in real time through the arranged sensor.
S202, according to the current specified working condition parameters of the engine of the target vehicle, the exhaust pipe gas pressure corresponding to the specified working condition parameters of the engine is searched out from a pre-configured exhaust pipe gas pressure diagram.
It should be noted that, when the engine is under different working conditions, the theoretical gas pressure in the exhaust pipe is fixed, so in the embodiment of the application, the theoretical gas pressure in the exhaust pipe is determined in advance for different specified working condition parameters, and a corresponding exhaust pipe gas pressure MAP is produced, that is, MAP diagrams of each specified working condition parameter and the theoretical gas pressure in the exhaust pipe are produced.
Therefore, after determining the current specified operating condition parameter of the engine of the target vehicle, the exhaust pipe gas pressure corresponding to the specified operating condition parameter of the engine can be found out from the exhaust pipe gas pressure map.
S203, determining the exhaust pipe gas pressure corresponding to the specified working condition parameter of the engine as the current target gas pressure.
S102, determining a current nozzle opening correction parameter according to the current target gas pressure and the current actual gas pressure.
It should be noted that, based on the difference between the current target gas pressure and the current actual gas pressure, a parameter on the gas pressure may be obtained, and the pressure of the gas entering the turbine may directly affect the opening of the nozzle, so it may be converted into a correction parameter of the opening of the nozzle on the nozzle ring. The current nozzle opening correction parameter can thus be determined directly by depending on the current target gas pressure and the current actual gas pressure.
Alternatively, the current nozzle opening correction parameter may be determined by the PID controller in real time based on the current target gas pressure and the current actual gas pressure.
Optionally, in another embodiment of the present application, a specific implementation manner of step S102, as shown in fig. 3, includes:
s301, calculating a difference value between the current target gas pressure and the current actual gas pressure to obtain a current gas pressure difference value of an exhaust pipe of the engine.
S302, inquiring the nozzle correction opening corresponding to the current gas pressure difference from a pre-configured nozzle correction opening map.
In order to improve the efficiency of adjusting the opening degree of the nozzle, in the embodiment of the present application, a MAP of the difference between the gas pressure and the corresponding nozzle correction opening degree is created in advance based on the difference between the current target gas pressure and the current actual gas pressure, so that the nozzle correction opening degree corresponding to the current gas pressure difference can be directly found out from the MAP.
In addition, because a certain difference may exist between the theoretical calculation and the actual calculation, the actual data may be obtained through a test by means of the nozzle correction opening degree diagram, and the actual data may be drawn in the nozzle correction opening degree diagram.
And S303, determining the nozzle correction opening corresponding to the current gas pressure difference as a current nozzle opening correction parameter.
In the embodiment of the present application, the nozzle opening degree to be corrected is directly adopted as the nozzle opening degree correction parameter. Of course, other types of parameters may be used as the nozzle opening correction parameter, such as a correction opening scaling factor.
S103, according to the current target working condition parameters of the engine of the target vehicle, inquiring the current nozzle basic opening corresponding to each nozzle group from the nozzle basic opening corresponding to each nozzle group of the nozzle ring of the turbocharger of the pre-configured target vehicle.
Wherein, divide each nozzle in the nozzle ring into each nozzle group in advance. One nozzle group includes at least one nozzle in the nozzle ring. The nozzle basic opening degree map corresponding to each nozzle group is obtained through experiments in advance.
The target operating condition parameter refers to a parameter that characterizes an engine operating condition.
In order to enable the opening degree of each nozzle to be well adapted to the airflow, and avoid excessive loss, in this embodiment of the present application, each nozzle on the nozzle ring is divided into a plurality of nozzle groups in advance, and the opening degree of the nozzles in each nozzle group is controlled respectively, so that not all the nozzles are uniformly controlled. Wherein different nozzle groups comprise different nozzles, each nozzle group comprises at least one nozzle in the nozzle ring, and each nozzle group needs to cover all nozzles on the nozzle ring, and no omission exists. Alternatively, the number of configurations included in each nozzle group may be uniform or may be different, and may be specifically divided according to specific test data during the test.
Then, under the condition that different target working condition parameters are determined through a test mode, when the total loss of the nozzle ring is the lowest, the opening degree of the nozzles in each nozzle group is not determined respectively, namely, the opening degree of the lowest loss of each nozzle group is not determined respectively, so that when the opening degree is adjusted by the adjacent nozzles, the opening degree of the other nozzle can be influenced, the two nozzles cannot be guaranteed to be at the optimal opening degree, the total loss of the nozzle ring is mainly guaranteed to be the lowest, and the turbocharger is guaranteed to have higher performance. And then, respectively configuring a nozzle basic opening degree diagram corresponding to each nozzle group based on the data of each nozzle group under different target working condition parameters in the test, namely configuring a MAP diagram corresponding to the target working condition parameters and the configured opening degree.
Therefore, the current target working condition parameters of the engine of the current target vehicle can be obtained, and then the current nozzle basic opening corresponding to each nozzle group is queried from the nozzle basic opening diagrams corresponding to each nozzle group of the nozzle ring of the turbocharger of the pre-configured target vehicle according to the current target working condition parameters of the engine of the target vehicle, so that the current theoretical opening corresponding to each nozzle group is obtained.
It should be noted that, the process of acquiring the current nozzle base opening corresponding to each nozzle group and the process of acquiring the current nozzle correction parameter may also be completely executed independently, so the execution sequence of each step in the embodiment of the present application is only one of the optional execution modes, and step S103 in the embodiment of the present application does not necessarily need to be executed after step S102, but only needs to be executed before step S104.
Optionally, in another embodiment of the present application, the current target operating condition parameters of the engine include a rotational speed of the engine and an injection amount. Accordingly, in the embodiment of the present application, a specific implementation manner of step S103, as shown in fig. 4, includes:
s401, for each nozzle basic opening degree diagram, the nozzle basic opening degree corresponding to the rotation speed and the oil injection quantity of the current engine is searched out from the nozzle basic opening degree diagram.
S402, determining the found nozzle basic opening as the current nozzle basic opening corresponding to the nozzle group corresponding to the nozzle basic opening map.
S104, correcting the current nozzle basic opening corresponding to each nozzle group by using the current nozzle correction parameters to obtain the current nozzle target opening corresponding to each nozzle group.
Since the current nozzle base opening corresponding to each nozzle group is the nozzle opening in the current ideal case, which has a certain gap from the actual situation, the correction is required by the current nozzle correction parameters obtained in the foregoing.
Alternatively, when the embodiment shown in fig. 2 is adopted in step S102, that is, when the current nozzle opening correction parameter is the nozzle correction opening, a specific embodiment of the corresponding step S104 includes:
and adding the current nozzle correction parameters with the current nozzle basic opening corresponding to each nozzle group respectively to obtain the current nozzle target opening corresponding to each nozzle group.
S105, adjusting the opening of each nozzle in each nozzle group to the current nozzle target opening corresponding to the nozzle group.
In the embodiment of the present application, the opening degree of each nozzle group is controlled, so that the opening degree of the nozzles in each nozzle group needs to be adjusted differently. However, the individual nozzles in the same nozzle group are uniformly controlled so that the opening degrees of the individual nozzles in the same nozzle group are uniform.
Alternatively, in another embodiment of the present application, a specific implementation of step S105, as shown in fig. 5, includes:
s501, determining a blade angle corresponding to a current nozzle target opening corresponding to each nozzle group.
It should be noted that, a plurality of blades are disposed on the nozzle ring, the channel between two blades is a nozzle, each nozzle corresponds to one blade of the two nozzles, and the blades corresponding to different nozzles are different. The adjustment of the opening of the nozzle is achieved by adjusting the corresponding vane, so that the vane angle corresponding to the current target opening of the nozzle needs to be determined first.
S502, adjusting the angles of the turbine blades corresponding to the nozzles in the nozzle group to the blade angles corresponding to the current nozzle target opening corresponding to the nozzle group through the control device corresponding to the nozzle group, so as to adjust the opening of each nozzle in the nozzle group to the current nozzle target opening corresponding to the nozzle group.
The embodiment of the application provides a control method of a nozzle ring, wherein each nozzle in the nozzle ring is divided into a plurality of nozzle groups in advance, and each nozzle group at least comprises one nozzle in the nozzle ring so as to independently control each nozzle group. And obtaining a nozzle basic opening degree diagram of the nozzle basic opening degree of the engine under different target working condition parameters through experiments in advance, so that the basic opening degrees corresponding to the nozzle groups when the energy loss of the nozzle ring to the airflow is lowest under the different target working condition parameters can be determined through experiments. Therefore, according to the current target working condition parameters of the engine of the target vehicle, the current nozzle base opening corresponding to each nozzle group can be queried from the nozzle base opening corresponding to each nozzle group of the nozzle ring of the turbocharger of the pre-configured target vehicle. And the current target gas pressure and the current actual gas pressure of the exhaust pipe of the engine of the target vehicle are obtained in real time, and the current nozzle opening correction parameter is determined according to the current target gas pressure and the current actual gas pressure, so that theoretical and actual correction parameters are obtained. And finally, the opening degree of each nozzle in the nozzle group is adjusted to the current nozzle target opening degree corresponding to the nozzle group according to each nozzle group, so that the independent control of each nozzle group is realized, the opening degree of the nozzle in each nozzle group can be well adapted to the air flow, the loss of air flow energy is reduced, and the overall performance of the turbocharger is effectively improved.
Another embodiment of the present application provides a control device for a nozzle ring, as shown in fig. 6, including:
an acquisition unit 601 for acquiring in real time a current target gas pressure and a current actual gas pressure of an exhaust pipe of an engine of a target vehicle.
A correction parameter determining unit 602, configured to determine a current nozzle opening correction parameter according to the current target gas pressure and the current actual gas pressure.
The base opening determining unit 603 is configured to query, according to a current target operating condition parameter of an engine of the target vehicle, a current nozzle base opening corresponding to each nozzle group from a nozzle base opening map corresponding to each nozzle group of a nozzle ring of a turbocharger of the target vehicle, which is configured in advance.
Wherein, each nozzle in the nozzle ring is divided in advance to obtain each nozzle group. One nozzle group includes at least one nozzle in the nozzle ring. The nozzle basic opening degree map corresponding to each nozzle group is obtained through experiments in advance.
And the opening correction unit 604 is configured to correct the current nozzle base opening corresponding to each nozzle group by using the current nozzle correction parameter, so as to obtain the current nozzle target opening corresponding to each nozzle group.
The opening control unit 605 is configured to adjust, for each nozzle group, the opening of each nozzle in the nozzle group to the current nozzle target opening corresponding to the nozzle group.
Optionally, in the control device for a nozzle ring provided in another embodiment of the present application, the obtaining unit includes:
and the parameter acquisition unit is used for acquiring the current specified working condition parameters of the engine of the target vehicle and the current actual gas pressure in the exhaust pipe of the engine of the target vehicle acquired by the sensor in real time.
And the pressure query unit is used for searching the exhaust pipe gas pressure corresponding to the specified working condition parameter of the engine from a pre-configured exhaust pipe gas pressure diagram according to the current specified working condition parameter of the engine of the target vehicle.
And the pressure determining unit is used for determining the gas pressure of the exhaust pipe corresponding to the specified working condition parameter of the engine as the current target gas pressure.
Optionally, in the control device for a nozzle ring provided in another embodiment of the present application, the correction parameter determining unit includes:
and the differential pressure calculation unit is used for calculating the difference value between the current target gas pressure and the current actual gas pressure to obtain the current gas pressure difference value of the exhaust pipe of the engine.
And a first opening inquiring unit for inquiring the nozzle correction opening corresponding to the current gas pressure difference from the pre-configured nozzle correction opening map.
And the first opening determining unit is used for determining the nozzle correction opening corresponding to the current gas pressure difference value as a current nozzle opening correction parameter.
Optionally, in the control device for a nozzle ring provided in another embodiment of the present application, the opening correction unit includes:
and the opening correction subunit is used for respectively adding the current nozzle correction parameters with the current nozzle basic opening corresponding to each nozzle group to obtain the current nozzle target opening corresponding to each nozzle group.
Optionally, in the above-mentioned control device for a nozzle ring, the current target operating condition parameters of the engine include a rotation speed of the engine and an injection amount, and the base opening determining unit includes:
and the second opening inquiry unit is used for searching the nozzle basic opening corresponding to the rotation speed and the oil injection quantity of the engine from the nozzle basic opening graphs for each nozzle basic opening graph.
And the second opening determining unit is used for determining the found nozzle basic opening as the current nozzle basic opening corresponding to the nozzle group corresponding to the nozzle basic opening map.
Optionally, in the control device for a nozzle ring provided in another embodiment of the present application, the control unit includes:
and the angle determining unit is used for determining the blade angle corresponding to the current nozzle target opening corresponding to the nozzle group for each nozzle group.
And the angle adjusting unit is used for adjusting the angles of the turbine blades corresponding to the nozzles in the nozzle group to the blade angles corresponding to the current nozzle target opening corresponding to the determined nozzle group through the control device corresponding to the nozzle group so as to adjust the opening of each nozzle in the nozzle group to the current nozzle target opening corresponding to the nozzle group.
It should be noted that, for the specific working process of each unit provided in the above embodiment of the present application, reference may be correspondingly made to the specific implementation process of the corresponding step in the above method embodiment, which is not repeated herein.
Another embodiment of the present application provides an electronic device, as shown in fig. 7, including:
a memory 701 and a processor 702.
Wherein the memory 701 is used for storing a program.
The processor 702 is configured to execute a program stored in the memory 701, and when the program is executed, the program is specifically configured to implement the method for controlling a nozzle ring provided in any one of the embodiments described above.
Another embodiment of the present application provides a computer storage medium storing a computer program for implementing the method for controlling a nozzle ring according to any one of the above embodiments when the computer program is executed.
Computer storage media, including both non-transitory and non-transitory, removable and non-removable 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 computer storage media 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, read only compact disc read only memory (CD-ROM), digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic 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 the computing device. Computer-readable media, as defined herein, does not include transitory computer-readable media (transmission media), such as modulated data signals and carrier waves.
Those of skill would further appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative elements and steps are described above generally in terms of functionality in order to clearly illustrate the interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
1. A method of controlling a nozzle ring, comprising:
acquiring current target gas pressure and current actual gas pressure of an exhaust pipe of an engine of a target vehicle in real time;
determining a current nozzle opening correction parameter according to the current target gas pressure and the current actual gas pressure;
according to the current target working condition parameters of the engine of the target vehicle, inquiring the current nozzle basic opening corresponding to each nozzle group from a pre-configured nozzle basic opening map corresponding to each nozzle group of a nozzle ring of a turbocharger of the target vehicle; dividing each nozzle in the nozzle ring in advance to obtain each nozzle group; one of the nozzle groups includes at least one nozzle in the nozzle ring; the basic opening degree diagrams of the nozzles corresponding to the nozzle groups are obtained through experiments in advance;
correcting the current nozzle basic opening corresponding to each nozzle group by using the current nozzle opening correction parameters to obtain the current nozzle target opening corresponding to each nozzle group;
determining a blade angle corresponding to the current nozzle target opening corresponding to the nozzle group according to each nozzle group, wherein the blades corresponding to different nozzles are different;
and adjusting the angle of the turbine blade corresponding to each nozzle in the nozzle group to the blade angle corresponding to the current nozzle target opening corresponding to the determined nozzle group through the control device corresponding to the nozzle group, so as to adjust the opening of each nozzle in the nozzle group to the current nozzle target opening corresponding to the nozzle group.
2. The method of claim 1, wherein the obtaining in real time the current target gas pressure and the current actual gas pressure of the exhaust pipe of the engine of the target vehicle comprises:
acquiring current designated working condition parameters of an engine of the target vehicle and the current actual gas pressure in an exhaust pipe of the engine of the target vehicle acquired by a sensor in real time;
according to the current appointed working condition parameters of the engine of the target vehicle, the exhaust pipe gas pressure corresponding to the appointed working condition parameters of the engine is searched out from a pre-configured exhaust pipe gas pressure diagram;
and determining the gas pressure of the exhaust pipe corresponding to the specified working condition parameter of the engine as the current target gas pressure.
3. The method of claim 1, wherein determining a current nozzle opening correction parameter based on the current target gas pressure and the current actual gas pressure comprises:
calculating the difference value between the current target gas pressure and the current actual gas pressure to obtain a current gas pressure difference value of an exhaust pipe of the engine;
inquiring the nozzle correction opening corresponding to the current gas pressure difference from a pre-configured nozzle correction opening map;
and determining the nozzle correction opening corresponding to the current gas pressure difference as the current nozzle opening correction parameter.
4. A method according to claim 3, wherein said correcting the current nozzle base opening corresponding to each of the nozzle groups by using the current nozzle opening correction parameter to obtain the current nozzle target opening corresponding to each of the nozzle groups includes:
and adding the current nozzle opening correction parameters with the current nozzle basic opening corresponding to each nozzle group to obtain the current nozzle target opening corresponding to each nozzle group.
5. The method according to claim 1, wherein the current target operating condition parameters of the engine include a rotational speed of the engine and an injection amount, and the querying, according to the current target operating condition parameters of the engine of the target vehicle, a current nozzle base opening corresponding to each nozzle group from a pre-configured nozzle base opening map corresponding to each nozzle group of a nozzle ring of a turbocharger of the target vehicle includes:
for each nozzle basic opening degree diagram, searching a nozzle basic opening degree corresponding to the rotating speed and the fuel injection quantity of the engine at the same time from the nozzle basic opening degree diagram;
and determining the searched nozzle basic opening as the current nozzle basic opening corresponding to the nozzle group corresponding to the nozzle basic opening map.
6. A control device for a nozzle ring, comprising:
an acquisition unit for acquiring a current target gas pressure and a current actual gas pressure of an exhaust pipe of an engine of a target vehicle in real time;
a correction parameter determining unit, configured to determine a current nozzle opening correction parameter according to the current target gas pressure and the current actual gas pressure;
a basic opening determining unit, configured to query, according to a current target working condition parameter of the engine of the target vehicle, a current nozzle basic opening corresponding to each nozzle group from a nozzle basic opening map corresponding to each nozzle group of a nozzle ring of a pre-configured turbocharger of the target vehicle; dividing each nozzle in the nozzle ring in advance to obtain each nozzle group; one of the nozzle groups includes at least one nozzle in the nozzle ring; the basic opening degree diagrams of the nozzles corresponding to the nozzle groups are obtained through experiments in advance;
the opening correction unit is used for correcting the current nozzle basic opening corresponding to each nozzle group by utilizing the current nozzle opening correction parameters to obtain the current nozzle target opening corresponding to each nozzle group;
an opening control unit, configured to adjust, for each of the nozzle groups, an opening of each nozzle in the nozzle group to a current nozzle target opening corresponding to the nozzle group;
the opening control unit is specifically configured to determine, for each nozzle group, a blade angle corresponding to a current nozzle target opening corresponding to the nozzle group, where blades corresponding to different nozzles are different; and adjusting the angle of the turbine blade corresponding to each nozzle in the nozzle group to the blade angle corresponding to the current nozzle target opening corresponding to the determined nozzle group through the control device corresponding to the nozzle group, so as to adjust the opening of each nozzle in the nozzle group to the current nozzle target opening corresponding to the nozzle group.
7. The apparatus of claim 6, wherein the acquisition unit comprises:
the parameter acquisition unit is used for acquiring current specified working condition parameters of the engine of the target vehicle and the current actual gas pressure in the exhaust pipe of the engine of the target vehicle, which is acquired by the sensor, in real time;
the pressure query unit is used for searching the exhaust pipe gas pressure corresponding to the specified working condition parameter of the engine from a pre-configured exhaust pipe gas pressure map according to the current specified working condition parameter of the engine of the target vehicle;
and the pressure determining unit is used for determining the exhaust pipe gas pressure corresponding to the specified working condition parameter of the engine as the current target gas pressure.
8. An electronic device, comprising:
a memory and a processor;
wherein the memory is used for storing programs;
the processor is configured to execute the program, which when executed, is specifically configured to implement the method of controlling a nozzle ring according to any one of claims 1 to 5.
9. A computer storage medium storing a computer program which, when executed, is adapted to carry out the method of controlling a nozzle ring according to any one of claims 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310260117.2A CN115977748B (en) | 2023-03-17 | 2023-03-17 | Control method and device of nozzle ring, electronic equipment and storage medium |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310260117.2A CN115977748B (en) | 2023-03-17 | 2023-03-17 | Control method and device of nozzle ring, electronic equipment and storage medium |
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| CN115977748A CN115977748A (en) | 2023-04-18 |
| CN115977748B true CN115977748B (en) | 2023-07-18 |
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Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1408456A (en) * | 1964-08-20 | 1965-08-13 | Cem Comp Electro Mec | Partial injection power generator for free turbine |
| JP3680639B2 (en) * | 1999-06-15 | 2005-08-10 | 日産自動車株式会社 | Engine control device |
| CN1162611C (en) * | 2002-04-19 | 2004-08-18 | 清华大学 | Variable nozzle turbocharging control method and system for vehicle engine |
| JP4166681B2 (en) * | 2003-12-25 | 2008-10-15 | 本田技研工業株式会社 | Exhaust gas purification device for internal combustion engine |
| US7428814B2 (en) * | 2006-03-08 | 2008-09-30 | Melvin Hess Pedersen | Turbine assemblies and related systems for use with turbochargers |
| JP5988779B2 (en) * | 2012-08-31 | 2016-09-07 | 日野自動車株式会社 | Control device for variable capacity turbocharger |
| US20140286758A1 (en) * | 2013-03-19 | 2014-09-25 | Abb Turbo Systems Ag | Nozzle ring with non-uniformly distributed airfoils and uniform throat area |
| CN105781716B (en) * | 2016-03-22 | 2018-07-24 | 吉林大学 | Electric assisted variable nozzle turbocharging system and its control method |
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