CN115977748A - 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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- CN115977748A CN115977748A CN202310260117.2A CN202310260117A CN115977748A CN 115977748 A CN115977748 A CN 115977748A CN 202310260117 A CN202310260117 A CN 202310260117A CN 115977748 A CN115977748 A CN 115977748A
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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
Abstract
The application discloses control method and device, electronic equipment and storage medium of a nozzle ring, wherein the method comprises the following steps: 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; determining a current nozzle opening correction parameter according to the current target gas pressure and the current actual gas pressure; inquiring current nozzle base opening degrees corresponding to each nozzle group from a preset nozzle base opening degree diagram corresponding to each nozzle group of a nozzle ring of a turbocharger of the target vehicle according to the current target working condition parameters of the engine of the 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 respectively aiming at each nozzle group, adjusting the opening degree of each nozzle in the nozzle group to the current target opening degree of the nozzle corresponding to the 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 air intake modes of the engine of the vehicle are mainly divided into natural air intake and turbo-charging. The turbocharging air inlet mode is realized by a turbocharger, and specifically, exhaust gas discharged by an engine is discharged into a turbine through an exhaust pipe. Then, after the exhaust gas is accelerated by a nozzle ring consisting of a plurality of nozzles in the turbine, the exhaust gas is blown to an impeller in the turbine so as to drive a compressor connected through a transmission shaft to rotate through the impeller, and therefore the compressor sucks air, compresses the air and sends the air into an engine.
Because the vehicle is in different operating conditions, the demand for the air entering the engine is different, and based on the operating principle of the turbocharger, the air inlet of the engine can be adjusted by changing the opening degree of the nozzle on the nozzle ring of the turbine, so that the opening degree of the nozzle on the nozzle ring needs to be adjusted according to the operating condition of the vehicle. At present, the opening degree of a nozzle corresponding to the air inflow is inquired according to the air inflow of the air compressor, and the opening degree of each nozzle on the nozzle ring is adjusted to the inquired opening degree.
However, when the exhaust gas enters the turbine through the exhaust pipe, the exhaust gas is affected by the turbine shell, so that the exhaust gas flows unevenly. In the conventional mode, all nozzles on a nozzle ring are controlled in a unified mode, so that the blade angles of partial nozzles cannot be well adapted to the airflow direction, and therefore, the energy of waste gas is greatly lost, and the overall performance of the turbocharger is influenced.
Disclosure of Invention
Based on the defects of 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 existing control method of the nozzle ring causes great loss to the energy of exhaust gas, thereby affecting the overall performance of a turbocharger.
In order to achieve the above object, the present application provides the following technical solutions:
the present application provides in a first aspect a method of controlling a nozzle ring, comprising:
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;
determining a current nozzle opening correction parameter according to the current target gas pressure and the current actual gas pressure;
inquiring current nozzle basic opening degrees corresponding to the nozzle groups from a preset nozzle basic opening degree diagram corresponding to each nozzle group of a nozzle ring of a turbocharger of the target vehicle according to the current target working condition parameters of the engine of the target vehicle; dividing each nozzle in the nozzle ring in advance to obtain each nozzle group; one said nozzle group including at least one nozzle of said nozzle ring; the nozzle basic opening map corresponding to each nozzle group is obtained in advance through tests;
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 respectively aiming at each nozzle group, adjusting the opening degree of each nozzle in the nozzle group to the current target opening degree of the nozzle corresponding to the nozzle group.
Optionally, in the above method for controlling a nozzle ring, the obtaining 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 includes:
acquiring current specified working condition parameters of the engine of the target vehicle and the current actual gas pressure in an exhaust pipe of the engine of the target vehicle, which is acquired by a sensor;
according to the current specified working condition parameters of the engine of the target vehicle, searching the exhaust pipe gas pressure corresponding to the specified working condition parameters of the engine from a pre-configured exhaust pipe gas pressure diagram;
and determining the exhaust pipe gas pressure corresponding to the specified working condition parameters 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 the current gas pressure difference value of an exhaust pipe of the engine;
inquiring a nozzle correction opening corresponding to the current gas pressure difference from a pre-configured nozzle correction opening graph;
and determining the corrected opening of the nozzle corresponding to the current gas pressure difference value as the corrected opening parameter of the current nozzle.
Optionally, in the method for controlling a nozzle ring, the correcting, by using the current nozzle correction parameter, the current nozzle base opening corresponding to each nozzle group to obtain a current nozzle target opening corresponding to each nozzle group includes:
and adding the current nozzle correction parameters to the current nozzle basic opening corresponding to each nozzle group respectively to obtain the current nozzle target opening corresponding to each nozzle group.
Optionally, in the method for controlling a nozzle ring, the current target operating condition parameter of the engine includes a rotation speed and an oil injection amount of the engine, and querying a 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 according to the current target operating condition parameter of the engine of the target vehicle includes:
respectively aiming at each nozzle basic opening map, searching out a nozzle basic opening corresponding to the rotating speed and the fuel injection quantity of the engine at the same time from the nozzle basic opening map;
and 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 above method for controlling a nozzle ring, the adjusting, for each nozzle group, the opening degree of each nozzle in the nozzle group to a current target opening degree of the nozzle corresponding to the nozzle group includes:
respectively determining a blade angle corresponding to the 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 determined current nozzle target opening degree corresponding to the nozzle group through the control device corresponding to the nozzle group, so as to adjust the opening degree of each nozzle in the nozzle group to the current nozzle target opening degree corresponding to the nozzle group.
The present application provides in a second aspect a control device for a nozzle ring, comprising:
an acquisition unit configured to acquire 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;
the correction parameter determining unit is used for determining 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 operating 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 turbocharger of the target vehicle, which is configured in advance; dividing each nozzle in the nozzle ring in advance to obtain each nozzle group; one said nozzle group including at least one nozzle of said nozzle ring; the nozzle basic opening map corresponding to each nozzle group is obtained in advance through tests;
the opening correction unit is used for 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 the opening control unit is used for respectively aiming at each nozzle group, and adjusting the opening of each nozzle in the nozzle group to the current target opening of the nozzle corresponding to the nozzle group.
Optionally, in the above control device for a nozzle ring, the obtaining unit includes:
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, which is acquired by a sensor;
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 preset 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 exhaust pipe gas pressure corresponding to the specified working condition parameters of the engine as the current target gas pressure.
Optionally, in the above 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 an exhaust pipe of the engine;
the first opening inquiring unit is used for inquiring the corrected opening of the nozzle corresponding to the current gas pressure difference value from a preset corrected opening diagram of the nozzle;
and the first opening determining unit is used for determining the nozzle correction opening corresponding to the current gas pressure difference as the current nozzle opening correction parameter.
Alternatively, in the above control device for a nozzle ring, the opening correction unit includes:
and the opening correction subunit is used for adding the current nozzle correction parameters to the current nozzle basic opening corresponding to each nozzle group respectively 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 parameters of the engine include a rotation speed and an oil injection amount of the engine, and the basic opening determining unit includes:
the second opening inquiring unit is used for respectively aiming at each nozzle basic opening map and finding out the nozzle basic opening corresponding to the rotating speed and the fuel injection quantity of the engine at the same time from the nozzle basic opening map;
and the second opening degree determining unit is used for determining the found nozzle basic opening degree as the current nozzle basic opening degree corresponding to the nozzle group corresponding to the nozzle basic opening degree diagram.
Optionally, in the control device of the nozzle ring, the control unit includes:
the angle determining unit is used for determining a blade angle corresponding to the current nozzle target opening corresponding to each 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 determined 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.
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 the program, when executed, is specifically configured to implement the method for controlling the nozzle ring as described in 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 implement a method of controlling a nozzle ring as defined 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, each nozzle group at least comprises one nozzle in the nozzle ring, and the nozzle groups are independently controlled. And a nozzle base opening diagram of the nozzle base opening of the engine under different target working condition parameters is obtained in advance through tests, so that the corresponding base opening of each nozzle group can be determined through the tests when the energy loss of the nozzle ring to the air flow is lowest under different target working condition parameters. Therefore, according to the current target operating condition parameter of the engine of the target vehicle, the current nozzle basic opening degree corresponding to each nozzle group can be inquired from the nozzle basic opening degree map corresponding to each nozzle group of the nozzle ring of the turbocharger of the target vehicle, which is configured in advance. And acquiring the current target gas pressure and the current actual gas pressure of an exhaust pipe of an engine of the target vehicle in real time, and determining the current nozzle opening correction parameter according to the current target gas pressure and the current actual gas pressure so as to obtain theoretical and actual correction parameters. 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 respectively aiming at each nozzle group, so that the independent control of each nozzle group is realized, the opening degree of each nozzle in each nozzle group can be well adapted to the air flow, the loss of the 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 needed to be used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a flowchart of a control method for a nozzle ring according to an embodiment of the present disclosure;
FIG. 2 is a flow chart of a method for determining a current target gas pressure and a current actual gas pressure according to an embodiment of the present disclosure;
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 basic opening corresponding to each nozzle group according to an embodiment of the present disclosure;
fig. 5 is a flowchart of a method for adjusting an opening degree of each nozzle in a nozzle group according to an embodiment of the present disclosure;
fig. 6 is a schematic structural diagram of a control device of a nozzle ring according to an embodiment of the present disclosure;
fig. 7 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In this application, relational terms such as first and second, and the like may be 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 phrases "comprising a," "...," or "comprising" does not exclude the presence of additional 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 comprises 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, when the engine of the vehicle is under different operating conditions, the pressure of the exhaust gas entering the turbine through the exhaust pipe is different, and the difference in the pressure of the exhaust gas causes the flow characteristics of the exhaust gas in the turbine to be different. Therefore, according to the working condition of the engine, the theoretical pressure of the engine of the target vehicle under the current working condition, namely the current target gas pressure of the exhaust pipe of the engine of the target vehicle can be acquired. However, due to various factors, the pressure of the exhaust gas in turn may differ from the actual pressure, and therefore it is also necessary to acquire the current actual gas pressure of the exhaust pipe of the engine of the subject vehicle.
It is obvious that a correction parameter between theoretical and actual parameters can be obtained by the current target gas pressure and the current actual gas pressure of the exhaust pipe of the engine of the target vehicle. The gas pressure of the exhaust pipe can reflect the characteristics of gas entering the turbine so as to influence the opening degree of the nozzle, so that a correction parameter of the theoretical opening degree of the nozzle, namely the correction of the basic opening degree of the nozzle can be obtained by obtaining the current target gas pressure and the current actual gas pressure of the exhaust pipe of the engine of the 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 need to be obtained in real time.
Optionally, in another embodiment of the present application, as shown in fig. 2, a specific implementation manner of step S101 includes:
s201, acquiring current specified working condition parameters of the engine of the target vehicle in real time and current actual gas pressure in the exhaust pipe of the engine of the target vehicle, wherein the current actual working condition parameters are acquired by a sensor.
The designated working condition parameters are designated parameters capable of reflecting the working conditions of the engine. Optionally, the current specified operating condition parameter may specifically be a rotation speed and an oil injection amount of the engine, so as to avoid acquiring more parameters.
Because the engine is under different operating modes, the theoretical gas of blast pipe is different, so in this application embodiment, reflect different operating modes through appointed operating mode parameter, consequently need obtain the present appointed operating mode parameter of the engine of target vehicle.
As for the actual gas pressure, in the embodiment of the present application, the current actual gas pressure in the exhaust pipe of the engine of the target vehicle is directly acquired in real time by the provided 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 found out from a preset exhaust pipe gas pressure diagram.
It should be noted that, when the engine is in different operating conditions, the theoretical gas pressure in the exhaust pipe is fixed, so in this embodiment of the present application, the theoretical gas pressure in the exhaust pipe is determined in advance for different specified operating condition parameters, and a corresponding exhaust pipe gas pressure MAP, that is, a MAP of each specified operating condition parameter and the theoretical gas pressure in the exhaust pipe is created.
Therefore, after the current specified operating condition parameters of the engine of the target vehicle are determined, the exhaust pipe gas pressure corresponding to the specified operating condition parameters of the engine can be found from the exhaust pipe gas pressure map.
And S203, determining the exhaust pipe gas pressure corresponding to the specified working condition parameters of the engine as the current target gas pressure.
And 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 a parameter on the gas pressure can be obtained based on the difference between the current target gas pressure and the current actual gas pressure, and the pressure of the gas entering the turbine directly affects the opening of the nozzle, so that the parameter can be converted into a correction parameter of the opening of the nozzle on the nozzle ring. Therefore, the current nozzle opening correction parameter can be directly determined according to the current target gas pressure and the current actual gas pressure.
Optionally, the current nozzle opening correction parameter may be determined by the PID controller in real time according to 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 the difference value between the current target gas pressure and the current actual gas pressure to obtain the current gas pressure difference value of an exhaust pipe of the engine.
S302, inquiring a nozzle correction opening corresponding to the current gas pressure difference value 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 invention, a MAP of the gas pressure difference 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, and the nozzle correction opening degree corresponding to the current gas pressure difference can be directly searched from the MAP.
In addition, since there may be a certain difference between the theoretical calculation and the actual calculation, in the manner of correcting the opening map of the nozzle, actual data may be obtained through experiments and plotted in the corrected opening map of the nozzle.
And S303, determining the corrected opening of the nozzle corresponding to the current gas pressure difference value as a current nozzle opening correction parameter.
In the embodiment of the present application, the nozzle opening degree to be corrected is directly used 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 ratio coefficient.
S103, inquiring current nozzle base opening degrees corresponding to the nozzle groups from a pre-configured nozzle base opening degree diagram corresponding to each nozzle group of a nozzle ring of a turbocharger of the target vehicle according to the current target working condition parameters of the engine of the target vehicle.
Wherein each nozzle in the nozzle ring is divided in advance to obtain each nozzle group. One nozzle group comprises at least one nozzle in the nozzle ring. The nozzle base opening map corresponding to each nozzle group is obtained in advance through experiments.
The target operating condition parameter refers to a parameter that characterizes an engine operating condition.
It should be noted that, in order to enable the opening of each nozzle to be well adapted to the air flow and avoid causing excessive loss, in the embodiment of the present application, each nozzle on the nozzle ring is divided into a plurality of nozzle groups in advance, and the openings of the nozzles in each nozzle group are controlled respectively, so that all nozzles are no longer controlled uniformly. Wherein different nozzle groups contain different nozzles, each nozzle group comprises at least one nozzle in a nozzle ring, and each nozzle group needs to cover all nozzles on the nozzle ring, and there can be no omission. Optionally, the number of configurations included in each nozzle group may be the same or different, and may be specifically divided according to specific test data during the test process.
Then, under the different target operating mode parameters are determined through the experimental 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 each nozzle group under the lowest loss is not determined respectively, so that the adjacent nozzles can influence the opening degree of another nozzle when the opening degree is adjusted, the two nozzles cannot be ensured to be in the self-optimal opening degree, the total loss of the nozzle ring is mainly ensured to be the lowest, and the turbocharger is further ensured to have higher performance. Then, based on the data of each nozzle group under different target working condition parameters in the test, a nozzle basic opening MAP corresponding to each nozzle group is configured, namely a MAP of the corresponding target working condition parameters and the configured opening is configured.
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 degree corresponding to each nozzle group is inquired from the nozzle basic opening degree diagram corresponding to each nozzle group of the nozzle ring of the turbocharger of the preset target vehicle according to the current target working condition parameters of the engine of the target vehicle, namely the current theoretical opening degree 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 manners, and step S103 in the embodiment of the present application does not necessarily need to be executed after step S102, and 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 rotation 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, aiming at each nozzle basic opening map, respectively, and searching out the nozzle basic opening corresponding to the rotating speed and the fuel injection quantity of the current engine from the nozzle basic opening map.
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.
And S104, respectively 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.
Because the current nozzle base opening corresponding to each nozzle group is the nozzle opening under the current ideal condition, and has a certain difference with the actual condition, the current nozzle base opening needs to be corrected through the current nozzle correction parameters obtained in the previous step.
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 corresponding specific embodiment of step S104 includes:
and respectively adding the current nozzle correction parameters to the current nozzle basic opening corresponding to each nozzle group to obtain the current nozzle target opening corresponding to each nozzle group.
And S105, respectively aiming at each nozzle group, adjusting the opening degree of each nozzle in the nozzle group to the current target opening degree of the nozzle corresponding to the nozzle group.
In the present embodiment, the opening degree of each nozzle group is controlled individually, and therefore, it is necessary to adjust the opening degree of each nozzle in each nozzle group differently. However, the nozzles in the same nozzle group are collectively controlled so that the opening degrees of the nozzles in the same nozzle group are the same.
Optionally, in another embodiment of the present application, as shown in fig. 5, a specific implementation manner of step S105 includes:
and S501, determining the blade angle corresponding to the current nozzle target opening corresponding to each nozzle group.
It should be noted that, a plurality of vanes are provided on the nozzle ring, a channel between two vanes is a nozzle, and each nozzle corresponds to one vane of the two nozzles, and the vanes of different nozzles are different. Therefore, the adjustment of the opening degree of the nozzle is realized by adjusting the corresponding vane, and therefore, the vane angle corresponding to the current target opening degree of the nozzle needs to be determined first.
S502, adjusting, by the control device corresponding to the nozzle group, the angle of the turbine blade corresponding to each nozzle in the nozzle group to a blade angle corresponding to the current target nozzle opening corresponding to the nozzle group, so as to adjust the opening of each nozzle in the nozzle group to the current target nozzle opening corresponding to the nozzle group.
The embodiment of the application provides a control method of a nozzle ring, which divides each nozzle in the nozzle ring into a plurality of nozzle groups in advance, wherein each nozzle group at least comprises one nozzle in the nozzle ring so as to independently control each nozzle group. And a nozzle base opening map of the nozzle base opening of the engine under different target working condition parameters is obtained in advance through tests, so that the base opening corresponding to each nozzle group when the energy loss of the nozzle ring to the airflow is lowest under different target working condition parameters can be determined through tests. Therefore, according to the current target operating condition parameter of the engine of the target vehicle, the current nozzle basic opening degree corresponding to each nozzle group can be inquired from the nozzle basic opening degree map corresponding to each nozzle group of the nozzle ring of the turbocharger of the target vehicle, which is configured in advance. And acquiring the current target gas pressure and the current actual gas pressure of an exhaust pipe of an engine of the target vehicle in real time, and determining the current nozzle opening correction parameter according to the current target gas pressure and the current actual gas pressure so as to obtain theoretical and actual correction parameters. 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 respectively aiming at each nozzle group, so that the independent control of each nozzle group is realized, the opening degree of each nozzle in each nozzle group can be well adapted to the air flow, the loss of the 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:
the acquiring unit 601 is configured to acquire 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 602, 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 603, configured to query, according to a 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 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 comprises at least one nozzle in the nozzle ring. The nozzle base opening map corresponding to each nozzle group is obtained in advance through experiments.
An opening correction unit 604, configured to correct the current nozzle base opening corresponding to each nozzle group by using the current nozzle correction parameter, respectively, to obtain a current nozzle target opening corresponding to each nozzle group.
An opening degree control unit 605 is configured to adjust the opening degree of each nozzle in the nozzle group to the current target opening degree of the nozzle corresponding to the nozzle group, for each nozzle group.
Optionally, in a control device of 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, which is acquired by the sensor.
And the pressure query unit is used for searching the exhaust pipe gas pressure corresponding to the specified working condition parameters of the engine from a preset exhaust pipe gas pressure diagram according to the current specified working condition parameters 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 parameters of the engine as the current target gas pressure.
Optionally, in a control device of 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 the first opening inquiring unit is used for inquiring the corrected opening of the nozzle corresponding to the current gas pressure difference from a preset corrected opening map of the nozzle.
And the first opening determining unit is used for determining the nozzle correction opening corresponding to the current gas pressure difference as the current nozzle opening correction parameter.
Optionally, in a control device of a nozzle ring provided in another embodiment of the present application, the opening correction unit includes:
and the opening correction subunit is used for adding the current nozzle correction parameters to the current nozzle basic openings corresponding to the nozzle groups respectively to obtain the current nozzle target openings corresponding to the nozzle groups.
Optionally, in the above control device for a nozzle ring, the current target operating condition parameters of the engine include a rotation speed and an oil injection amount of the engine, and the basic opening determining unit includes:
and the second opening inquiry unit is used for respectively searching the basic opening of the nozzle corresponding to the rotating speed and the oil injection quantity of the engine from the basic opening of the nozzle.
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 a control device of 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 aiming at each 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.
It should be noted that, for the specific working processes of each unit provided in the foregoing embodiments of the present application, reference may be made to the specific implementation processes of the corresponding steps in the foregoing method embodiments, and details are not described here again.
Another embodiment of the present application provides an electronic device, as shown in fig. 7, including:
a memory 701 and a processor 702.
The memory 701 is used for storing programs.
The processor 702 is configured to execute a program stored in the memory 701, which when executed, is specifically configured to implement the method of controlling the nozzle ring as provided in any of the embodiments described above.
Another embodiment of the present application provides a computer storage medium for storing a computer program, which when executed, is used to implement the control method for a nozzle ring as provided in any one of the above embodiments.
Computer storage media, including permanent and non-permanent, removable and non-removable media, may implement the information storage by any method or technology. 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, 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 that can be used to store information that can be accessed by a computing device. As defined herein, a computer readable medium does not include a transitory computer readable medium such as a modulated data signal and a carrier wave.
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 components and steps have been described above generally in terms of their functionality in order to clearly illustrate this 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 technical 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 (10)
1. A method of controlling a nozzle ring, comprising:
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;
determining a current nozzle opening correction parameter according to the current target gas pressure and the current actual gas pressure;
inquiring current nozzle basic opening degrees corresponding to the nozzle groups from a preset nozzle basic opening degree diagram corresponding to each nozzle group of a nozzle ring of a turbocharger of the target vehicle according to the current target working condition parameters of the engine of the target vehicle; dividing each nozzle in the nozzle ring in advance to obtain each nozzle group; one said nozzle group including at least one nozzle of said nozzle ring; the nozzle basic opening map corresponding to each nozzle group is obtained in advance through tests;
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 respectively aiming at each nozzle group, adjusting the opening degree of each nozzle in the nozzle group to the current target opening degree of the nozzle corresponding to the nozzle group.
2. The method of claim 1, wherein the obtaining 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 comprises:
acquiring current specified working condition parameters of the engine of the target vehicle and the current actual gas pressure in an exhaust pipe of the engine of the target vehicle, which is acquired by a sensor;
according to the current specified working condition parameters of the engine of the target vehicle, searching the exhaust pipe gas pressure corresponding to the specified working condition parameters of the engine from a preset exhaust pipe gas pressure diagram;
and determining the exhaust pipe gas pressure corresponding to the specified working condition parameters 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 the current gas pressure difference value of an exhaust pipe of the engine;
inquiring a nozzle correction opening corresponding to the current gas pressure difference from a pre-configured nozzle correction opening graph;
and determining the corrected opening of the nozzle corresponding to the current gas pressure difference value as the corrected opening parameter of the current nozzle.
4. The method according to claim 3, wherein the respectively correcting the current nozzle basic opening degree corresponding to each nozzle group by using the current nozzle correction parameter to obtain the current nozzle target opening degree corresponding to each nozzle group comprises:
and adding the current nozzle correction parameters to the current nozzle basic opening corresponding to each nozzle group respectively to obtain the current nozzle target opening corresponding to each nozzle group.
5. The method of claim 1, wherein the current target operating parameters of the engine include a rotation speed and an oil injection amount of the engine, and the querying, according to the current target operating parameters of the engine of the target vehicle, a current base nozzle opening corresponding to each nozzle group from a pre-configured base nozzle opening map corresponding to each nozzle group of a nozzle ring of a turbocharger of the target vehicle includes:
aiming at each nozzle basic opening map, respectively finding out the nozzle basic opening corresponding to the rotating speed and the fuel injection quantity of the engine simultaneously from the nozzle basic opening map;
and determining the found nozzle basic opening as the current nozzle basic opening corresponding to the nozzle group corresponding to the nozzle basic opening map.
6. The method according to claim 1, wherein the adjusting the opening degree of each nozzle in the nozzle group to the current target opening degree of the nozzle corresponding to the nozzle group for each nozzle group comprises:
respectively determining a blade angle corresponding to the 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 determined current nozzle target opening degree corresponding to the nozzle group through the control device corresponding to the nozzle group, so as to adjust the opening degree of each nozzle in the nozzle group to the current nozzle target opening degree corresponding to the nozzle group.
7. 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;
the correction parameter determining unit is used for determining 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 operating 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 turbocharger of the target vehicle, which is configured in advance; dividing each nozzle in the nozzle ring in advance to obtain each nozzle group; one said nozzle group including at least one nozzle of said nozzle ring; the nozzle basic opening map corresponding to each nozzle group is obtained in advance through tests;
the opening correction unit is used for 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 the opening control unit is used for respectively aiming at each nozzle group, and adjusting the opening of each nozzle in the nozzle group to the current target opening of the nozzle corresponding to the nozzle group.
8. The apparatus of claim 7, wherein the obtaining unit comprises:
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, which is acquired by a sensor;
the pressure query unit is used for searching the exhaust pipe gas pressure corresponding to the specified working condition parameters of the engine from a pre-configured exhaust pipe gas pressure diagram according to the current specified working condition parameters 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 parameters of the engine as the current target gas pressure.
9. 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 particularly configured to implement the method of controlling a nozzle ring as claimed in any one of claims 1 to 6.
10. A computer storage medium storing a computer program which, when executed, is adapted to implement a method of controlling a nozzle ring as claimed in any one of claims 1 to 6.
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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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| 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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| CN115977748B CN115977748B (en) | 2023-07-18 |
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| US3288434A (en) * | 1964-08-20 | 1966-11-29 | Bbc Brown Boveri & Cie | Gas turbine adapted for partial activation |
| JP2000356158A (en) * | 1999-06-15 | 2000-12-26 | Nissan Motor Co Ltd | Control device for engine |
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| CN115977748B (en) | 2023-07-18 |
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