CN115977748B - Nozzle ring control method and device, electronic equipment, storage medium - Google Patents

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

Nozzle ring control method and device, electronic equipment, storage medium

technical field

The present application relates to the technical field of vehicle control, in particular to a method and device for controlling a nozzle ring, electronic equipment, and a storage medium.

Background technique

The air intake mode of the current vehicle engine is mainly divided into naturally aspirated and turbocharged. The intake method of turbocharging is realized through the turbocharger, specifically, the exhaust gas from the engine is discharged into the turbine through the exhaust pipe. Then, after the exhaust gas is accelerated by the nozzle ring composed of multiple nozzles in the turbine, it is blown to the impeller in the turbine, so that the impeller drives the compressor connected through the transmission shaft to rotate, so that the compressor sucks in air and compresses it to send into the engine.

Because the vehicle has different requirements for the air entering the engine under different operating conditions, and based on the working principle of the turbocharger, it can be known that changing the opening of the nozzle on the nozzle ring of the turbine can adjust the intake of the engine, so It is necessary to adjust the opening of the nozzles on the nozzle ring according to the running conditions of the vehicle. At present, the opening of the nozzles corresponding to the intake air is inquired mainly according to the air intake of the compressor, and the openings of the nozzles on the nozzle ring are adjusted to the inquired openings.

However, when the exhaust gas enters the turbine through the exhaust pipe, it will be affected by the turbine casing, so that the exhaust gas will flow unevenly. However, the existing method is to uniformly control each nozzle on the nozzle ring, so the blade angles of some nozzles may not be well adapted to the airflow direction, which will cause a large loss of exhaust gas energy and affect the turbocharger. overall performance of the compressor.

Contents of the invention

Based on the above deficiencies in the prior art, the present application provides a nozzle ring control method and device, electronic equipment, and a storage medium to solve the problem that the existing nozzle ring control method causes a large loss of exhaust gas energy, thereby Problems that affect the overall performance of the turbocharger.

In order to achieve the above object, the application provides the following technical solutions:

The first aspect of the present application provides a method for controlling a nozzle ring, including:

Obtain the current target gas pressure and the current actual gas pressure of the exhaust pipe of the engine of the 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 operating condition parameters of the engine of the target vehicle, each of the above-mentioned The current nozzle base opening degree corresponding to the nozzle group; wherein, each nozzle group 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; each of the nozzle groups The nozzle base opening diagram corresponding to the nozzle group is obtained through tests in advance;

Using the current nozzle correction parameters to respectively correct the current nozzle base opening corresponding to each of the nozzle groups, to obtain the current nozzle target opening corresponding to each of the nozzle groups;

For each nozzle group, the opening degree of each nozzle in the nozzle group is adjusted to the current nozzle target opening degree corresponding to the nozzle group.

Optionally, in the above nozzle ring control method, the real-time acquisition of the current target gas pressure and the current actual gas pressure of the exhaust pipe of the engine of the target vehicle includes:

Obtaining in real time the current specified operating 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 collected by sensors;

According to the current specified working condition parameters of the engine of the target vehicle, find the exhaust pipe gas pressure corresponding to the specified working condition parameters of the engine from the pre-configured exhaust pipe gas pressure map;

The exhaust pipe gas pressure corresponding to the specified operating condition parameter of the engine is determined as the current target gas pressure.

Optionally, in the above nozzle ring control method, the determining the current nozzle opening correction parameter according to the current target gas pressure and the current actual gas pressure includes:

calculating the difference between the current target gas pressure and the current actual gas pressure to obtain the current gas pressure difference of the exhaust pipe of the engine;

From the pre-configured nozzle correction opening diagram, query the nozzle correction opening corresponding to the current gas pressure difference;

The nozzle correction opening corresponding to the current gas pressure difference is determined as the current nozzle opening correction parameter.

Optionally, in the above nozzle ring control method, the current nozzle base openings corresponding to each of the nozzle groups are respectively corrected by using the current nozzle correction parameters to obtain the current nozzles corresponding to each of the nozzle groups Target opening, including:

The current nozzle correction parameters are respectively added to the current basic nozzle opening degrees corresponding to each of the nozzle groups to obtain the current nozzle target opening degrees corresponding to each of the nozzle groups.

Optionally, in the above nozzle ring control method, the current target operating condition parameters of the engine include the engine speed and fuel injection quantity, and the current target operating condition of the engine according to the target vehicle Parameters, from the pre-configured nozzle base opening diagram corresponding to each nozzle group of the nozzle ring of the turbocharger of the target vehicle, query the current nozzle base opening corresponding to each nozzle group, including:

Respectively for each of the nozzle basic opening diagrams, from the nozzle basic opening diagram, find out the nozzle basic opening corresponding to the engine speed and the fuel injection quantity at the same time;

The found basic nozzle opening degree is determined as the current nozzle basic opening degree corresponding to the nozzle group corresponding to the nozzle basic opening degree map.

Optionally, in the above nozzle ring control method, for each of the nozzle groups, the opening degree of each nozzle in the nozzle group is adjusted to the current nozzle target opening degree corresponding to the nozzle group, include:

For each of the nozzle groups, determine the blade angle corresponding to the current nozzle target opening degree corresponding to the nozzle group;

Through the control device corresponding to the nozzle group, the angle of the turbine blade corresponding to each nozzle in the nozzle group is adjusted to the blade angle corresponding to the determined current nozzle target opening degree corresponding to the nozzle group, so as to The opening degree of each nozzle in the nozzle group is adjusted to the current nozzle target opening degree corresponding to the nozzle group.

The second aspect of the present application provides a nozzle ring control device, including:

The acquisition unit is used to acquire the current target gas pressure and the current actual gas pressure of the exhaust pipe of the engine of the target vehicle in real time;

A correction parameter determination 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 determination unit, configured to obtain the pre-configured basic nozzle opening corresponding to each nozzle group of the nozzle ring of the turbocharger of the target vehicle according to the current target operating condition parameters of the engine of the target vehicle In the figure, the current basic nozzle opening degree corresponding to each nozzle group is queried; wherein, each nozzle group in the nozzle ring is divided in advance to obtain each nozzle group; one nozzle group includes at least the nozzle ring One of the nozzles; the nozzle base opening diagram corresponding to each nozzle group is obtained through experiments in advance;

The opening degree correction unit is used to use the current nozzle correction parameters to respectively correct the current nozzle basic opening degree corresponding to each of the nozzle groups, so as to obtain the current nozzle target opening degree corresponding to each of the nozzle groups;

The opening degree control unit is configured to adjust 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-mentioned nozzle ring control device, the acquisition unit includes:

A parameter acquisition unit, configured to acquire in real time 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 collected by sensors;

A pressure query unit, configured to find the exhaust pipe gas pressure corresponding to the specified working condition parameters of the engine from the pre-configured exhaust pipe gas pressure map according to the current specified working condition parameters of the engine of the target vehicle ;

A pressure determining unit, configured to determine the exhaust pipe gas pressure corresponding to the specified operating condition parameter of the engine as the current target gas pressure.

Optionally, in the above nozzle ring control device, the correction parameter determination unit includes:

a pressure difference calculation unit, configured to calculate the difference between the current target gas pressure and the current actual gas pressure, to obtain the current gas pressure difference of the exhaust pipe of the engine;

The first opening degree query unit is used to query the nozzle correction opening degree corresponding to the current gas pressure difference from the pre-configured nozzle correction opening degree map;

The first opening determination unit is configured to determine the corrected nozzle opening corresponding to the current gas pressure difference as the current nozzle opening correction parameter.

Optionally, in the above nozzle ring control device, the opening correction unit includes:

The opening degree correction subunit is used to add the current nozzle correction parameters to the current basic nozzle opening degrees corresponding to each nozzle group to obtain the current nozzle target opening degree corresponding to each nozzle group.

Optionally, in the above nozzle ring control device, the current target operating condition parameters of the engine include the engine speed and fuel injection quantity, and the basic opening determination unit includes:

The second opening degree query unit is used to find out the nozzle basic opening degree corresponding to the engine speed and fuel injection quantity from the nozzle basic opening degree diagram for each of the nozzle basic opening degree diagrams;

The second opening degree determining unit is configured to determine the found basic nozzle opening degree as the current basic nozzle opening degree corresponding to the nozzle group corresponding to the nozzle basic opening degree map.

Optionally, in the above-mentioned nozzle ring control device, the control unit includes:

An angle determining unit, configured to determine, for each of the nozzle groups, the blade angle corresponding to the current nozzle target opening degree corresponding to the nozzle group;

The angle adjustment unit is configured to adjust the angle of the turbine blades corresponding to each nozzle in the nozzle group to the angle corresponding to the determined current nozzle target opening degree corresponding to the nozzle group through the control device corresponding to the nozzle group. The vane angle is adjusted 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 third aspect of the present application provides an electronic device, including:

memory and processor;

Wherein, the memory is used to store programs;

The processor is configured to execute the program, and when the program is executed, it is specifically used to implement the nozzle ring control method described in any one of the above.

The fourth aspect of the present application provides a computer storage medium for storing a computer program, and when the computer program is executed, it is used to implement the nozzle ring control method as described in any one of the above.

The embodiment of the present application provides a nozzle ring control method, in which each nozzle in the nozzle ring is divided into a plurality of nozzle groups in advance, and each nozzle group includes at least one nozzle in the nozzle ring, so that each nozzle group can be controlled independently control. And the basic nozzle opening diagram of the nozzle basic opening of the engine under different target operating parameters is obtained through experiments in advance, so that it can be determined through experiments that when the energy loss of the nozzle ring to the airflow is the lowest under different target operating parameters, the Corresponding base opening. Therefore, according to the current target operating condition parameters of the engine of the target vehicle, the current nozzle corresponding to each nozzle group can be queried from the pre-configured nozzle base opening diagram corresponding to each nozzle group of the nozzle ring of the turbocharger of the target vehicle. Basic opening. Moreover, 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 parameters are determined according to the current target gas pressure and the current actual gas pressure, thereby obtaining a theoretical and practical correction parameter. Then use the current nozzle correction parameters to correct the current nozzle base opening corresponding to each nozzle group respectively, and obtain the current nozzle target opening corresponding to each nozzle group to ensure the accuracy of the nozzle target opening. Finally, for each nozzle group, The opening of each nozzle in the nozzle group is adjusted to the current nozzle target opening corresponding to the nozzle group, so as to realize the independent control of each nozzle group, so that the opening of the nozzles in each nozzle group can be well matched with the air flow Adaptation, reduce the loss of airflow energy, and effectively improve the overall performance of the turbocharger.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only It is an embodiment of the present application, and those skilled in the art can also obtain other drawings according to the provided drawings without creative work.

FIG. 1 is a flow chart of a method for controlling a nozzle ring provided by an embodiment of the present application;

Fig. 2 is a flowchart of a method for the current target gas pressure and the current actual gas pressure provided by the embodiment of the present application;

Fig. 3 is a flow chart of a method for determining the current nozzle opening correction parameter provided by the embodiment of the present application;

Fig. 4 is a flow chart of a method for querying the current nozzle base opening degree corresponding to each nozzle group provided by the embodiment of the present application;

FIG. 5 is a flow chart of a method for adjusting the opening of each nozzle in a nozzle group provided by an embodiment of the present application;

Fig. 6 is a schematic structural diagram of a control device for a nozzle ring provided by an embodiment of the present application;

FIG. 7 is a schematic structural diagram of an electronic device provided by an embodiment of the present application.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

In this application, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any relationship between these entities or operations. an actual relationship or order. Moreover, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article or apparatus comprising a set of elements includes not only those elements but also items not expressly listed other elements, or also include elements inherent in such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article or apparatus comprising said element.

The embodiment of the present application provides a method for controlling a nozzle ring, as shown in FIG. 1 , which specifically includes the following steps:

S101. Obtain the current target gas pressure and the current actual gas pressure of the exhaust pipe of the engine of the 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 different pressure of the exhaust gas will cause differences in 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, that is, the current target gas pressure of the exhaust pipe of the engine of the target vehicle can be obtained. However, due to the existence of various factors, there may be differences between the exhaust gas pressure of the turns and the actual one, so it is also necessary to obtain the current actual gas pressure of the exhaust pipe of the engine of the target vehicle.

Through the current target gas pressure of the exhaust pipe of the engine of the target vehicle and the current actual gas pressure, obviously a correction parameter between the theoretical and actual parameters can be obtained. The gas pressure of the exhaust pipe can reflect the characteristics of the gas entering the turbine, thereby affecting the opening of the nozzle, so by obtaining the current target gas pressure of the exhaust pipe of the engine of the target vehicle and the current actual gas pressure, it can be obtained A correction parameter for the theoretical opening of the nozzle is the correction for the basic opening of the nozzle, so it is necessary to obtain the current target gas pressure and the current actual gas pressure of the exhaust pipe of the engine of the target vehicle 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. Obtain in real time 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 collected by the sensor.

Wherein, the specified working condition parameter is a specified parameter that can reflect the working condition of the engine. Optionally, the currently specified operating condition parameters may specifically be engine speed and fuel injection quantity, so as to avoid obtaining more parameters.

Since the theoretical gas of the exhaust pipe is different under different working conditions of the engine, in the embodiment of this application, different working conditions are reflected by specifying working condition parameters, so it is necessary to obtain the current specified working condition of the engine of the target vehicle parameter.

Regarding 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 collected in real time through the provided sensor.

S202. According to the current designated working condition parameters of the engine of the target vehicle, find the exhaust pipe gas pressure corresponding to the designated working condition parameters of the engine from the pre-configured exhaust pipe gas pressure map.

It should be noted that when the engine is in different working conditions, the theoretical gas pressure in the exhaust pipe is fixed, so in the embodiment of the present application, the theoretical gas pressure in the exhaust pipe is determined in advance for different specified working condition parameters , and make the corresponding gas pressure map of the exhaust pipe, that is, make the MAP diagram of each specified working condition parameter and the theoretical gas pressure in the exhaust pipe.

Therefore, after determining the current specified operating condition parameters of the engine of the target vehicle, the exhaust pipe gas pressure corresponding to the specified engine operating condition parameters can be found from the exhaust pipe gas pressure map.

S203. Determine the gas pressure of the exhaust pipe corresponding to the specified operating condition parameter of the engine as the current target gas pressure.

S102. Determine 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 can be obtained, and the pressure of the gas entering the turbine will directly affect the opening of the nozzle, so it can be converted into a nozzle ring Correction parameters on the opening of the nozzle. 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, a PID controller may be used to determine the current nozzle opening correction parameter 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. Calculate the difference between the current target gas pressure and the current actual gas pressure to obtain the current gas pressure difference of the exhaust pipe of the engine.

S302. From the pre-configured nozzle correction opening diagram, query the nozzle correction opening corresponding to the current gas pressure difference.

It should be noted that, in order to improve the efficiency of adjusting the opening of the nozzle, in the embodiment of the present application, according to the difference between the current target gas pressure and the current actual gas pressure, the gas pressure difference and The MAP diagram of the corresponding nozzle correction opening degree, so that the nozzle correction opening degree corresponding to the current gas pressure difference can be directly queried from the map.

Moreover, due to the possible discrepancy between theoretical calculation and reality, the actual data can also be obtained through experiments through the nozzle correction opening diagram, and drawn in the nozzle correction opening diagram.

S303. Determine the corrected nozzle opening corresponding to the current gas pressure difference as the current nozzle opening correction parameter.

It should be noted that, in the embodiment of the present application, the nozzle opening that needs to be corrected is directly used as the nozzle opening correction parameter. Of course, other forms of parameters may also be used as nozzle opening correction parameters, such as a correction opening proportional coefficient and the like.

S103. According to the current target operating condition parameters of the engine of the target vehicle, query the current nozzles corresponding to each nozzle group from the pre-configured nozzle basic opening diagram corresponding to each nozzle group of the nozzle ring of the turbocharger of the target vehicle Basic opening.

Wherein, each nozzle in the nozzle ring is divided in advance to obtain each nozzle group. A nozzle group includes at least one nozzle in the nozzle ring. The nozzle base opening diagram corresponding to each nozzle group is obtained through experiments in advance.

The target operating condition parameter refers to a parameter used to characterize the operating condition of the engine.

It should be noted that, in order to allow the opening of each nozzle to be well adapted to the air flow and avoid excessive loss, in this embodiment of the application, each nozzle on the nozzle ring is pre-divided into multiple nozzles Groups, respectively control the opening of the nozzles in each nozzle group, instead of uniformly controlling all nozzles. Wherein, different nozzle groups include different nozzles, each nozzle group includes at least one nozzle in the nozzle ring, and each nozzle group needs to cover all the nozzles on the nozzle ring, and there must 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, the opening of the nozzles in each nozzle group is determined when the total loss of the nozzle ring is the lowest under different target working condition parameters through experiments, that is, instead of determining the minimum loss opening of each nozzle group separately, Therefore, when the opening of the adjacent nozzle is adjusted, it will affect the opening of the other nozzle, and it is impossible to ensure that both nozzles are at their own optimal opening. Therefore, the main purpose is to ensure that the total loss of the nozzle ring is the lowest, thereby ensuring that the turbocharger Has higher performance. Then, based on the data of each nozzle group under different target working condition parameters in the test, the nozzle basic opening diagrams corresponding to each nozzle group are respectively configured, that is, the MAP diagram of corresponding target working condition parameters and configuration opening is configured.

Therefore, the current target operating condition parameters of the engine of the current target vehicle can be obtained, and then according to the current target operating condition parameters of the engine of the target vehicle, the nozzles corresponding to each nozzle group of the nozzle ring of the turbocharger of the pre-configured target vehicle In the basic opening diagram, query the current basic nozzle opening corresponding to each nozzle group, that is, obtain the current theoretical opening corresponding to each nozzle group.

It should also be noted that the acquisition process of the current nozzle base opening corresponding to each nozzle group and the previous process of obtaining the current nozzle correction parameters can also be performed completely independently, so the execution order of each step in the embodiment of the present application is only one of them. In an optional execution manner, step S103 in the embodiment of the present application does not necessarily need to be executed after step S102, it 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 engine speed and fuel injection quantity. Correspondingly, 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 diagram, find out the nozzle basic opening corresponding to the current engine speed and fuel injection quantity from the nozzle basic opening diagram.

S402. Determine the found nozzle base opening as the current nozzle base opening corresponding to the nozzle group corresponding to the nozzle base opening map.

S104 , using the current nozzle correction parameters to respectively correct the current nozzle base opening degrees corresponding to each nozzle group, to obtain the current nozzle target opening degrees corresponding to each nozzle group.

Since the current nozzle base opening corresponding to each nozzle group is the nozzle opening under the current ideal situation, there is a certain gap between it and the actual situation, so it needs to be corrected by the current nozzle correction parameters obtained above.

Optionally, when step S102 adopts the implementation as shown in FIG. 2 , that is, when the current nozzle opening correction parameter is the nozzle correction opening, a corresponding specific implementation of step S104 includes:

The current nozzle correction parameters are respectively added to the current nozzle base opening corresponding to each nozzle group to obtain the current nozzle target opening corresponding to each nozzle group.

S105. For each nozzle group, adjust the opening degree of each nozzle in the nozzle group to the current nozzle target opening degree corresponding to the nozzle group.

It should be noted that, in the embodiment of the present application, the opening degree of each nozzle group is controlled separately, so different needs adjust the opening degree of the nozzles in each nozzle group separately. However, for each nozzle in the same nozzle group, unified control is performed, and the opening degrees of each nozzle in the same nozzle group are consistent.

Optionally, in another embodiment of the present application, a specific implementation manner of step S105, as shown in FIG. 5 , includes:

S501. For each nozzle group, determine the blade angle corresponding to the current nozzle target opening degree corresponding to the nozzle group.

It should be noted that a plurality of blades are arranged on the nozzle ring, and the channel between two blades is a nozzle, and each nozzle corresponds to one blade of the two nozzles, and different nozzles correspond to different blades. Therefore, adjusting the opening of the nozzle is achieved by adjusting its corresponding blade, so it is necessary to first determine the blade angle corresponding to the target opening of the current nozzle.

S502. Using the control device corresponding to the nozzle group, adjust the angle of the turbine blades corresponding to each nozzle in the nozzle group to the blade angle corresponding to the target opening degree of the current nozzle corresponding to the nozzle group, so that the nozzle group The opening degree of each nozzle in is adjusted to the current nozzle target opening degree corresponding to the nozzle group.

The embodiment of the present application provides a nozzle ring control method, in which each nozzle in the nozzle ring is divided into a plurality of nozzle groups in advance, and each nozzle group includes at least one nozzle in the nozzle ring, so that each nozzle group can be controlled independently control. And the basic nozzle opening diagram of the nozzle basic opening of the engine under different target operating parameters is obtained through experiments in advance, so that it can be determined through experiments that when the energy loss of the nozzle ring to the airflow is the lowest under different target operating parameters, the Corresponding base opening. Therefore, according to the current target operating condition parameters of the engine of the target vehicle, the current nozzle corresponding to each nozzle group can be queried from the pre-configured nozzle base opening diagram corresponding to each nozzle group of the nozzle ring of the turbocharger of the target vehicle. Basic opening. Moreover, 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 parameters are determined according to the current target gas pressure and the current actual gas pressure, thereby obtaining a theoretical and practical correction parameter. Then use the current nozzle correction parameters to correct the current nozzle base opening corresponding to each nozzle group respectively, and obtain the current nozzle target opening corresponding to each nozzle group to ensure the accuracy of the nozzle target opening. Finally, for each nozzle group, The opening of each nozzle in the nozzle group is adjusted to the current nozzle target opening corresponding to the nozzle group, so as to realize the independent control of each nozzle group, so that the opening of the nozzles in each nozzle group can be well matched with the air flow Adaptation, reduce the loss of airflow energy, and effectively improve the overall performance of the turbocharger.

Another embodiment of the present application provides a nozzle ring control device, as shown in Figure 6, including:

The acquisition unit 601 is configured to acquire the current target gas pressure and the current actual gas pressure of the exhaust pipe of the engine of the target vehicle in real time.

The correction parameter determining unit 602 is configured to determine the current nozzle opening correction parameter according to the current target gas pressure and the current actual gas pressure.

The base opening determination unit 603 is configured to query the base opening diagram corresponding to each nozzle group of the nozzle ring of the turbocharger of the target vehicle according to the current target operating condition parameters of the engine of the target vehicle. The current nozzle base opening corresponding to each nozzle group.

Wherein, each nozzle in the nozzle ring is divided in advance to obtain each nozzle group. A nozzle group includes at least one nozzle in the nozzle ring. The nozzle base opening diagram corresponding to each nozzle group is obtained through experiments in advance.

The opening degree correction unit 604 is configured to use the current nozzle correction parameters to respectively correct the current basic nozzle opening degrees corresponding to each nozzle group, so as to obtain the current nozzle target opening degrees corresponding to each nozzle group.

The opening degree control unit 605 is configured to adjust 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 nozzle ring control device provided in another embodiment of the present application, the acquisition unit includes:

The parameter acquisition unit is used to acquire in real time 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 collected by the sensor.

The pressure query unit is used to find the exhaust pipe gas pressure corresponding to the specified engine operating condition parameters from the pre-configured exhaust pipe gas pressure map according to the current specified operating condition parameters of the engine of the target vehicle.

The pressure determining unit is used to determine the gas pressure of the exhaust pipe corresponding to the specified operating condition parameters of the engine as the current target gas pressure.

Optionally, in the nozzle ring control device provided in another embodiment of the present application, the correction parameter determination unit includes:

The pressure difference calculation unit is used to calculate the difference between the current target gas pressure and the current actual gas pressure to obtain the current gas pressure difference of the exhaust pipe of the engine.

The first opening degree inquiry unit is used to inquire the nozzle correction opening degree corresponding to the current gas pressure difference from the pre-configured nozzle correction opening degree map.

The first opening determination unit is configured to determine the corrected nozzle opening corresponding to the current gas pressure difference as the current nozzle opening correction parameter.

Optionally, in the nozzle ring control device provided in another embodiment of the present application, the opening correction unit includes:

The opening degree correction subunit is used to add the current nozzle correction parameters to the current nozzle basic opening degrees corresponding to each nozzle group to obtain the current nozzle target opening degree corresponding to each nozzle group.

Optionally, in the above-mentioned nozzle ring control device, the current target operating condition parameters of the engine include engine speed and fuel injection quantity, and the basic opening determination unit includes:

The second opening degree query unit is used to search out the nozzle basic opening degree corresponding to the engine speed and fuel injection quantity from the nozzle basic opening degree map respectively for each nozzle basic opening degree map.

The second opening degree determination unit is configured to determine 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 map.

Optionally, in the nozzle ring control device provided in another embodiment of the present application, the control unit includes:

The angle determination unit is configured to determine, for each nozzle group, the blade angle corresponding to the current nozzle target opening degree corresponding to the nozzle group.

The angle adjustment unit is used to adjust the angle of the turbine blades corresponding to each nozzle in the nozzle group to the blade angle corresponding to the target opening degree of the current nozzle corresponding to the determined nozzle group through the control device corresponding to the nozzle group, so that the nozzle group The opening degree of each nozzle in is adjusted to the current nozzle target opening degree corresponding to the nozzle group.

It should be noted that, for the specific working process of each unit provided in the above-mentioned embodiments of the present application, reference may be made to the specific implementation process of corresponding steps in the above-mentioned method embodiments, which will not be repeated here.

Another embodiment of the present application provides an electronic device, as shown in FIG. 7 , including:

memory 701 and processor 702.

Among them, the memory 701 is used to store programs.

The processor 702 is configured to execute the program stored in the memory 701. When the program is executed, it is specifically used to implement the nozzle ring control method provided by any one of the above embodiments.

Another embodiment of the present application provides a computer storage medium for storing a computer program. When the computer program is executed, it is used to realize the nozzle ring control method provided in any one of the above embodiments.

Computer storage media, including permanent and non-permanent, removable and non-removable media, may be implemented by any method or technology for information storage. 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 disc (DVD) or other optical storage, magnetic A magnetic tape cartridge, tape magnetic disk storage or other magnetic storage device or any other non-transmission medium that can be used to store information that can be accessed by a computing device. As defined herein, computer-readable media excludes transitory computer-readable media, such as modulated data signals and carrier waves.

Professionals can further realize that the units and algorithm steps of the examples described in conjunction with the embodiments disclosed herein can be implemented by electronic hardware, computer software or a combination of the two. In order to clearly illustrate the possible For interchangeability, in the above description, the composition and steps of each example have been generally described according to their functions. Whether these functions are executed by hardware or software depends on the specific application and design constraints of the technical solution. Skilled artisans may use different methods to implement the described functions for each specific application, but such implementation should not be regarded as exceeding the scope of the present application.

The above 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 general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the application. Therefore, the present application will not 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 for controlling a nozzle ring, comprising: Obtain the current target gas pressure and the current actual gas pressure of the exhaust pipe of the engine of the 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 operating condition parameters of the engine of the target vehicle, each of the above-mentioned The current nozzle base opening degree corresponding to the nozzle group; wherein, each nozzle group 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; each of the nozzle groups The nozzle base opening diagram corresponding to the nozzle group is obtained through tests in advance; Using the current nozzle opening correction parameters to respectively correct the current nozzle basic opening corresponding to each of the nozzle groups, to obtain the current nozzle target opening corresponding to each of the nozzle groups; For each of the nozzle groups, determine the blade angle corresponding to the current nozzle target opening degree corresponding to the nozzle group, and the blades corresponding to different nozzles are different; Through the control device corresponding to the nozzle group, the angle of the turbine blade corresponding to each nozzle in the nozzle group is adjusted to the blade angle corresponding to the determined current nozzle target opening degree corresponding to the nozzle group, so as to The opening degree of each nozzle in the nozzle group is adjusted to the current nozzle target opening degree corresponding to the nozzle group. 2. The method according to claim 1, wherein the real-time acquisition of the current target gas pressure and the current actual gas pressure of the exhaust pipe of the engine of the target vehicle comprises: Obtaining in real time the current specified operating 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 collected by sensors; According to the current specified working condition parameters of the engine of the target vehicle, find the exhaust pipe gas pressure corresponding to the specified working condition parameters of the engine from the pre-configured exhaust pipe gas pressure map; The exhaust pipe gas pressure corresponding to the specified operating condition parameter of the engine is determined as the current target gas pressure. 3. The method according to claim 1, wherein the determining the current nozzle opening correction parameter according to the current target gas pressure and the current actual gas pressure comprises: calculating the difference between the current target gas pressure and the current actual gas pressure to obtain the current gas pressure difference of the exhaust pipe of the engine; From the pre-configured nozzle correction opening diagram, query the nozzle correction opening corresponding to the current gas pressure difference; The nozzle correction opening corresponding to the current gas pressure difference is determined as the current nozzle opening correction parameter. 4. The method according to claim 3, characterized in that, the current nozzle base opening corresponding to each of the nozzle groups is respectively corrected by using the current nozzle opening correction parameters to obtain the corresponding nozzle opening of each nozzle group. The current target opening of the nozzle, including: Adding the current nozzle opening correction parameter to the current nozzle basic opening corresponding to each of the nozzle groups respectively, to obtain the current nozzle target opening corresponding to each of the nozzle groups. 5. The method according to claim 1, wherein the current target operating condition parameters of the engine include the engine speed and the fuel injection quantity, and the current target operating condition parameters of the engine according to the target vehicle Condition parameters, from the pre-configured nozzle base opening diagram corresponding to each nozzle group of the nozzle ring of the turbocharger of the target vehicle, query the current nozzle base opening corresponding to each nozzle group, including: Respectively for each of the nozzle basic opening diagrams, from the nozzle basic opening diagram, find out the nozzle basic opening corresponding to the engine speed and the fuel injection quantity at the same time; The found basic nozzle opening degree is determined as the current nozzle basic opening degree corresponding to the nozzle group corresponding to the nozzle basic opening degree map. 6. A control device for a nozzle ring, characterized in that it comprises: The acquisition unit is used to acquire the current target gas pressure and the current actual gas pressure of the exhaust pipe of the engine of the target vehicle in real time; A correction parameter determination 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 determination unit, configured to obtain the pre-configured basic nozzle opening corresponding to each nozzle group of the nozzle ring of the turbocharger of the target vehicle according to the current target operating condition parameters of the engine of the target vehicle In the figure, the current basic nozzle opening degree corresponding to each nozzle group is queried; wherein, each nozzle group in the nozzle ring is divided in advance to obtain each nozzle group; one nozzle group includes at least the nozzle ring One of the nozzles; the nozzle base opening diagram corresponding to each nozzle group is obtained through experiments in advance; The opening degree correction unit is used to use the current nozzle opening degree correction parameters to respectively correct the current nozzle basic opening degree corresponding to each of the nozzle groups, so as to obtain the current nozzle target opening degree corresponding to each of the nozzle groups; An opening degree control unit, configured to adjust 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; The opening degree control unit is specifically used to, for each of the nozzle groups, determine the blade angle corresponding to the current nozzle target opening degree corresponding to the nozzle group, and the blades corresponding to different nozzles are different; The control device adjusts the angle of the turbine blade corresponding to each nozzle in the nozzle group to the blade angle corresponding to the determination of the current nozzle target opening degree corresponding to the nozzle group, so that each nozzle in the nozzle group The opening degree of the nozzle is adjusted to the current nozzle target opening degree corresponding to the nozzle group. 7. The device according to claim 6, wherein the acquiring unit comprises: A parameter acquisition unit, configured to acquire in real time 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 collected by sensors; A pressure query unit, configured to find the exhaust pipe gas pressure corresponding to the specified working condition parameters of the engine from the pre-configured exhaust pipe gas pressure map according to the current specified working condition parameters of the engine of the target vehicle ; A pressure determining unit, configured to determine the exhaust pipe gas pressure corresponding to the specified operating condition parameter of the engine as the current target gas pressure. 8. An electronic device, characterized in that it comprises: memory and processor; Wherein, the memory is used to store programs; The processor is configured to execute the program, and when the program is executed, it is specifically used to implement the nozzle ring control method according to any one of claims 1 to 5. 9. A computer storage medium, characterized in that it is used to store a computer program, and when the computer program is executed, it is used to implement the nozzle ring control method according to any one of claims 1 to 5.