CN114645770B - Protection control method and device for urea nozzle, electronic equipment and vehicle - Google Patents
Protection control method and device for urea nozzle, electronic equipment and vehicle Download PDFInfo
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- CN114645770B CN114645770B CN202110573093.7A CN202110573093A CN114645770B CN 114645770 B CN114645770 B CN 114645770B CN 202110573093 A CN202110573093 A CN 202110573093A CN 114645770 B CN114645770 B CN 114645770B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P7/00—Controlling of coolant flow
- F01P7/14—Controlling of coolant flow the coolant being liquid
- F01P7/16—Controlling of coolant flow the coolant being liquid by thermostatic control
- F01P7/164—Controlling of coolant flow the coolant being liquid by thermostatic control by varying pump speed
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
- F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
- F01N3/2066—Selective catalytic reduction [SCR]
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P3/00—Liquid cooling
- F01P3/12—Arrangements for cooling other engine or machine parts
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P7/00—Controlling of coolant flow
- F01P7/14—Controlling of coolant flow the coolant being liquid
- F01P7/16—Controlling of coolant flow the coolant being liquid by thermostatic control
- F01P7/167—Controlling of coolant flow the coolant being liquid by thermostatic control by adjusting the pre-set temperature according to engine parameters, e.g. engine load, engine speed
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
The invention provides a method and a device for protecting and controlling a urea nozzle, electronic equipment and a vehicle, and belongs to the field of automobile exhaust emission. The method comprises the steps of obtaining environmental information of a current vehicle and working condition information of the current vehicle; determining a corresponding environment correction coefficient according to the environment information of the current vehicle; determining the basic rotating speed of the electronic water pump under the current working condition according to the working condition information of the current vehicle; and adjusting the rotating speed of the electronic water pump for cooling the circulating water of the urea nozzle according to the environment correction coefficient and the basic rotating speed of the electronic water pump under the current working condition. By using the urea nozzle protection control method and device, the electronic equipment and the vehicle, the cooling effect of the electronic water pump in a high-temperature environment can be enhanced.
Description
Technical Field
The embodiment of the application relates to the field of automobile exhaust emission, in particular to a method and a device for protecting and controlling a urea nozzle, electronic equipment and a vehicle.
Background
In order to reduce the pollutant emission of NOx and PM, the emission of NOx and PM must be controlled by combining an exhaust gas aftertreatment technology, a Selective Catalytic Reduction (SCR) technology is generally adopted to reduce the emission of NOx, and an SCR system comprises a urea nozzle for spraying urea.
Therefore, in order to protect the urea nozzle and urea molecules from being damaged easily, an electronic water pump is generally adopted to carry out water circulation cooling on the urea nozzle, and under the normal temperature condition, the rotating speed of the electronic water pump is required to be limited within a certain range in order to avoid the insufficient electrical balance of the whole vehicle.
However, when the external environment temperature is high, the cooling of the urea nozzle by the rotation speed of the electronic water pump under the normal temperature condition is insufficient, and further, the burning and melting failure of the urea nozzle and the thermal decomposition of urea molecules under the high temperature environment are easily caused.
Disclosure of Invention
The embodiment of the application provides a urea nozzle protection control method and device, electronic equipment and a vehicle, and aims to enhance the cooling effect of an electronic water pump in a high-temperature environment.
In a first aspect, an embodiment of the present application provides a method for protecting and controlling a urea nozzle, where the method includes:
acquiring environmental information of a current vehicle and working condition information of the current vehicle;
determining a corresponding environment correction coefficient according to the environment information of the current vehicle;
determining the basic rotating speed of the electronic water pump under the current working condition according to the working condition information of the current vehicle;
and adjusting the rotating speed of the electronic water pump for cooling the circulating water of the urea nozzle according to the environment correction coefficient and the basic rotating speed of the electronic water pump under the current working condition.
Optionally, the adjusting the rotation speed of the electronic water pump for cooling the urea nozzle with circulating water according to the environmental correction coefficient and the basic rotation speed of the electronic water pump under the current working condition includes:
correcting the basic rotating speed of the electronic water pump under the current working condition to be a target rotating speed according to the environment correction coefficient;
and controlling the electronic water pump to work at the target rotating speed.
Optionally, before the obtaining of the environmental information where the current vehicle is located and the working condition information of the current vehicle, the method further includes:
judging the working state of the electronic water pump;
and when the working state of the electronic water pump is in a normal state, starting to acquire the environmental information of the current vehicle and the working condition information of the current vehicle.
Optionally, the determining, according to the environmental information of the current vehicle, a corresponding environmental correction coefficient includes:
acquiring a first target look-up table corresponding to the environment information, wherein the first target look-up table comprises correction coefficients corresponding to a plurality of sample environment temperatures;
and acquiring an environment correction coefficient corresponding to the environment information of the current vehicle from the first target lookup table.
Optionally, the current working condition information includes an exhaust temperature and an engine water temperature, and determining a basic rotation speed of the electronic water pump under the current working condition according to the working condition information of the current vehicle includes:
acquiring a second target lookup table corresponding to the working condition information, wherein the second target lookup table comprises basic rotating speeds corresponding to combinations of a plurality of different exhaust temperatures and engine water temperatures;
and acquiring the basic rotating speed corresponding to the working condition information of the current vehicle from the second target look-up table.
Optionally, the environment information further includes atmospheric pressure, and the first target lookup table specifically includes correction coefficients corresponding to combinations of a plurality of different sample environment temperatures and atmospheric pressures.
Optionally, the controlling the electronic water pump to operate at the target rotation speed includes:
determining whether the target rotating speed exceeds a preset maximum rotating speed threshold value;
when the target rotating speed does not exceed the preset maximum rotating speed threshold value, controlling the electronic water pump to work at the target rotating speed;
and when the target rotating speed exceeds the preset maximum rotating speed threshold value, controlling the electronic water pump to work under the preset maximum rotating speed threshold value.
In a second aspect, an embodiment of the present application provides a protection control device for a urea nozzle, including:
the acquisition module is used for acquiring the environmental information of the current vehicle and the working condition information of the current vehicle;
the correction coefficient determining module is used for determining a corresponding environment correction coefficient according to the environment information of the current vehicle;
the basic rotating speed determining module is used for determining the basic rotating speed of the electronic water pump under the current working condition according to the working condition information of the current vehicle;
and the rotating speed adjusting module is used for adjusting the rotating speed of the electronic water pump for cooling the circulating water of the urea nozzle according to the environment correction coefficient and the basic rotating speed of the electronic water pump under the current working condition.
In a third aspect, an embodiment of the present application provides an electronic device, which includes a memory, a processor, and a computer program stored on the memory and executable on the processor, and when the processor executes the computer program, the processor implements a method for controlling protection of a urea nozzle as provided in the first aspect of the embodiment.
In a fourth aspect, the present application provides a vehicle including a nozzle device for use in the method for controlling protection of a urea nozzle according to the first aspect of the embodiment.
Has the advantages that: the method comprises the steps of determining a corresponding environment correction coefficient by acquiring environment information of a current vehicle, namely acquiring an environment temperature, and determining a basic rotating speed of an electronic water pump under the current working condition by acquiring working condition information of the current vehicle, namely determining the basic rotating speed of the electronic water pump under the current working condition by acquiring an exhaust temperature and an engine water temperature, and adjusting the rotating speed of the electronic water pump for cooling circulating water of a urea nozzle according to the environment correction coefficient and the basic rotating speed of the electronic water pump under the current working condition, so that when the change of the environment temperature is detected, and under the current working condition, the rotating speed of the electronic water pump can be timely adjusted, the electronic water pump works at a better rotating speed, and the cooling effect of the electronic water pump under a high-temperature environment is enhanced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the description of the embodiments of the present application will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive exercise.
FIG. 1 is a flow chart of the steps of a method according to an embodiment of the present application;
FIG. 2 is a flow chart of the steps of the method according to the second embodiment of the present application;
FIG. 3 is a flowchart illustrating steps for determining an environmental correction factor according to an embodiment of the present application;
FIG. 4 is a flowchart illustrating the steps for determining a base speed according to an embodiment of the present application;
FIG. 5 is a flowchart illustrating steps for adjusting the rotational speed of the electronic water pump according to an embodiment of the present disclosure;
fig. 6 is a schematic structural diagram of an apparatus according to the third 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 some, but not all, embodiments of the present application. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.
Example one
Referring to fig. 1, a protection control method for a urea nozzle, which may be applied to an engine controller ECU in a target vehicle, in a first embodiment of the present invention is shown, and includes:
step 101: acquiring environmental information of a current vehicle and working condition information of the current vehicle;
in the step, the environmental information comprises an environmental temperature, the current working condition information comprises an exhaust temperature and an engine water temperature, and a temperature sensor can be adopted for acquiring the environmental information of the current vehicle and the working condition information of the current vehicle, wherein the environmental temperature refers to a natural environmental temperature; and the collection of environmental information and condition information may be continuous.
Step 102: determining a corresponding environment correction coefficient according to the environment information of the current vehicle;
in this step, different environmental information, that is, different environmental temperatures correspond to different environmental correction coefficients, and the engine controller ECU can determine the corresponding environmental correction coefficients according to the environmental information of the current vehicle.
Step 103: determining the basic rotating speed of the electronic water pump under the current working condition according to the working condition information of the current vehicle;
in this step, the current working condition information of the vehicle, that is, the exhaust temperature and the engine water temperature, can be reflected to a certain extent, and the base rotation speed of the electronic water pump before correction when cooling is performed is not achieved.
In other embodiments of the present application, the execution sequence of step 102 and step 103 may be executed synchronously, or may not be executed sequentially.
Step 104: and adjusting the rotating speed of the electronic water pump for cooling the circulating water of the urea nozzle according to the environment correction coefficient and the basic rotating speed of the electronic water pump under the current working condition.
Since the increase in the natural environment temperature has a certain influence on the urea molecules in addition to the influence on the urea molecules due to the exhaust gas temperature, the influence of the natural environment temperature also needs to be considered when cooling the urea nozzle.
In order to enhance the cooling effect of the electronic water pump in a high-temperature environment, the ambient temperature of the current vehicle needs to be detected, and an environmental correction coefficient is selected according to the ambient temperature; according to the corresponding environment correction coefficient, the engine controller ECU corrects the environment temperature of the basic rotating speed of the electronic water pump under the current working condition, and adjusts the rotating speed of the electronic water pump for cooling the circulating water of the urea nozzle, so that the rotating speed of the electronic water pump can better cool the urea nozzle in a high-temperature environment.
And because the collection of the environmental information and the working condition information is continuous in real time, the correction of the ambient temperature of the rotating speed of the electronic water pump is changed in real time, so that the cooling effect can be enhanced, and the consumption of the vehicle level is reduced to a certain extent.
Example two
Referring to fig. 2, there is shown a protection control method for a urea injection nozzle, which may be applied to an engine controller ECU in a target vehicle, in a second embodiment of the present invention, the method including:
step 201: judging the working state of the electronic water pump;
specifically, the working state of the electronic water pump specifically comprises a normal state, a stop state and a fault state;
step 202: when the working state of the electronic water pump is in a normal state, starting to acquire the environmental information of the current vehicle and the working condition information of the current vehicle;
specifically, when the electronic water pump is in a normal state, the rotating speed of the electronic water pump is corrected; when the electronic water pump is in a stop state and a fault state, the rotating speed of the electronic water pump cannot be corrected.
Step 203: acquiring environmental information of a current vehicle and working condition information of the current vehicle;
in this step, environmental information includes ambient temperature and atmospheric pressure, and current operating mode information includes exhaust temperature and engine water temperature, because different atmospheric pressure also can exert an influence to the urea molecule, consequently when carrying out the revision to electronic water pump's rotational speed, also need gather the atmospheric pressure that the vehicle was located, and the collection mode can adopt gas pressure sensor.
Step 204: determining a corresponding environment correction coefficient according to the environment information of the current vehicle;
referring to fig. 3, in this step, according to the environmental information of the current vehicle, determining a corresponding environmental correction coefficient, further includes the following sub-steps:
step 2041: acquiring a first target look-up table corresponding to the environmental information, wherein the first target look-up table specifically comprises correction coefficients corresponding to combinations of a plurality of different sample environmental temperatures and atmospheric pressures;
step 2042: and acquiring an environment correction coefficient corresponding to the environment information of the current vehicle from the first target lookup table.
Specifically, a first target lookup table is stored in the engine controller ECU in advance, and the first target lookup table specifically includes correction coefficients corresponding to combinations of a plurality of different sample ambient temperatures and atmospheric pressures, in this embodiment, each correction coefficient in the first target lookup table is obtained through repeated experiments; in other embodiments, the relationship between the environmental information and the environmental correction factor can also be represented by a functional relationship; when the engine controller ECU detects the environmental information of the current vehicle, the environmental correction coefficient corresponding to the current environmental temperature and the atmospheric pressure is obtained from the first target lookup table.
Step 205: determining the basic rotating speed of the electronic water pump under the current working condition according to the working condition information of the current vehicle;
referring to fig. 4, in this step, the basic rotation speed of the electronic water pump under the current working condition is determined according to the working condition information of the current vehicle, and the method further includes the following substeps:
step 2051: acquiring a second target look-up table corresponding to the working condition information, wherein the second target look-up table comprises basic rotating speeds corresponding to combinations of a plurality of different exhaust temperatures and engine water temperatures;
step 2052: and acquiring the basic rotating speed corresponding to the working condition information of the current vehicle from the second target look-up table.
Specifically, a second target lookup table is pre-stored in the engine controller ECU, and the second target lookup table includes basic rotation speeds corresponding to combinations of a plurality of different exhaust temperatures and engine water temperatures, in this embodiment, the basic rotation speed corresponding to the current vehicle working condition information in the second target lookup table is also obtained repeatedly through experiments; in other embodiments, the relationship between the operating condition information and the basic rotating speed can also be represented by a functional relationship; and when the engine controller ECU detects the current working condition information of the vehicle, acquiring the exhaust temperature and the basic rotating speed corresponding to the engine water temperature from the second target lookup table.
In addition, in different urea supply systems and engine systems, the environmental correction coefficient in the first target lookup table and the value of the base rotation speed in the second target lookup table may also be changed, and for vehicles using different urea supply systems and engine systems, the first target lookup table and the second target lookup table corresponding to the urea supply system and the engine system may be prestored in the engine controller ECU.
Step 206: adjusting the rotating speed of the electronic water pump for cooling the circulating water of the urea nozzle according to the environment correction coefficient and the basic rotating speed of the electronic water pump under the current working condition:
referring to fig. 5, in this step, the rotation speed of the electronic water pump for cooling the urea nozzle by circulating water is adjusted according to the environmental correction coefficient and the basic rotation speed of the electronic water pump under the current working condition, and the method further includes the following substeps:
step 2061: correcting the basic rotating speed of the electronic water pump under the current working condition to be a target rotating speed according to the environment correction coefficient;
in the step, the engine controller ECU performs product operation on the environment correction coefficient and the basic rotating speed of the electronic water pump under the current working condition, and the result of the product operation is the target rotating speed.
Step 2062: determining whether the target rotating speed exceeds a preset maximum rotating speed threshold value;
in this step, the preset maximum rotation speed threshold may be set as the maximum rotation speed allowed by the electronic water pump, and after the target rotation speed is determined, the target rotation speed is compared with the preset maximum rotation speed threshold.
Step 2063: when the target rotating speed does not exceed a preset maximum rotating speed threshold value, controlling the electronic water pump to work at the target rotating speed;
step 2064: and when the target rotating speed exceeds a preset maximum rotating speed threshold value, controlling the electronic water pump to work under the preset maximum rotating speed threshold value.
By comparing the target rotating speed with the preset maximum rotating speed threshold value, when the target rotating speed is not more than the preset maximum rotating speed threshold value, the electronic water pump is controlled to work at the target rotating speed, and when the target rotating speed exceeds the preset maximum rotating speed threshold value, the electronic water pump is controlled to work at the preset maximum rotating speed threshold value, so that the rotating speed of the electronic water pump cannot exceed the maximum rotating speed allowed by the electronic water pump, and the electronic water pump is prevented from being broken down due to the fact that the rotating speed of the electronic water pump is too large.
EXAMPLE III
Based on the same inventive concept, another embodiment of the present application provides a protection control device for a urea nozzle, as shown in fig. 6, the protection control device for a urea nozzle may specifically include the following modules:
the acquisition module is used for acquiring the environmental information of the current vehicle and the working condition information of the current vehicle;
the correction coefficient determining module is used for determining a corresponding environment correction coefficient according to the environment information of the current vehicle;
the basic rotating speed determining module is used for determining the basic rotating speed of the electronic water pump under the current working condition according to the working condition information of the current vehicle;
and the rotating speed adjusting module is used for adjusting the rotating speed of the electronic water pump for cooling the circulating water of the urea nozzle according to the environment correction coefficient and the basic rotating speed of the electronic water pump under the current working condition.
In one possible embodiment, the urea nozzle protection control device further includes:
and the work judgment module is used for judging the working state of the electronic water pump, and when the working state of the electronic water pump is in a normal state, starting to acquire the environmental information of the current vehicle and the working condition information of the current vehicle.
In one possible embodiment, the speed regulation module comprises:
the target rotating speed determining unit is used for correcting the basic rotating speed of the electronic water pump under the current working condition into a target rotating speed according to the environment correction coefficient;
and the execution unit is used for controlling the electronic water pump to work at the target rotating speed.
In one possible implementation, the execution unit includes:
the comparison subunit is used for determining whether the target rotating speed exceeds a preset maximum rotating speed threshold value;
the rotating speed determining subunit is used for controlling the electronic water pump to work at the target rotating speed when the target rotating speed does not exceed a preset maximum rotating speed threshold; and when the target rotating speed exceeds a preset maximum rotating speed threshold value, controlling the electronic water pump to work under the preset maximum rotating speed threshold value.
For the device embodiment, since it is basically similar to the method embodiment, the description is simple, and for the relevant points, refer to the partial description of the method embodiment.
Example four
Based on the same inventive concept, another embodiment of the present application provides an electronic device, which includes a memory, a processor, and a computer program stored on the memory and executable on the processor, wherein the processor implements a protection control method for a urea nozzle according to the first embodiment or the second embodiment when executed.
EXAMPLE five
Based on the same inventive concept, another embodiment of the present application provides a vehicle, and the vehicle is provided with a method for controlling protection of a urea nozzle provided in the first embodiment or the second embodiment, or a device for controlling protection of a urea nozzle provided in the third embodiment.
The embodiments in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
As will be appreciated by one of skill in the art, embodiments of the present application may be provided as a method, apparatus, or computer program product. Accordingly, embodiments of the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, embodiments of the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
Embodiments of the present application are described with reference to flowchart illustrations and/or block diagrams of methods, terminal devices (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing terminal to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing terminal, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing terminal to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing terminal to cause a series of operational steps to be performed on the computer or other programmable terminal to produce a computer implemented process such that the instructions which execute on the computer or other programmable terminal provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While preferred embodiments of the present application have been described, additional variations and modifications of these embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including the preferred embodiment and all such alterations and modifications as fall within the true scope of the embodiments of the application.
Finally, it should also be noted that, herein, 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 "include", "including" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or terminal device including a series of elements includes not only those elements but also other elements not explicitly listed or inherent to such process, method, article, or terminal device. Without further limitation, an element defined by the phrase "comprising a … …" does not exclude the presence of another identical element in a process, method, article, or terminal that comprises the element.
The method, the device, the electronic equipment and the vehicle for protecting and controlling the urea nozzle provided by the application are described in detail, and a specific example is applied to illustrate the principle and the implementation mode of the application, and the description of the embodiment is only used for helping to understand the method and the core idea of the application; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.
Claims (9)
1. A method of protection control for a urea nozzle, the method comprising:
acquiring environmental information of a current vehicle and working condition information of the current vehicle;
determining a corresponding environment correction coefficient according to the environment information of the current vehicle;
determining the basic rotating speed of the electronic water pump under the current working condition according to the working condition information of the current vehicle;
adjusting the rotating speed of the electronic water pump for cooling the circulating water of the urea nozzle according to the environment correction coefficient and the basic rotating speed of the electronic water pump under the current working condition, wherein the adjusting comprises the following steps: correcting the basic rotating speed of the electronic water pump under the current working condition to be a target rotating speed according to the environment correction coefficient; and controlling the electronic water pump to work at the target rotating speed.
2. The method of claim 1, wherein before obtaining the environmental information of the current vehicle and the operating condition information of the current vehicle, the method further comprises:
judging the working state of the electronic water pump;
and when the working state of the electronic water pump is in a normal state, starting to acquire the environmental information of the current vehicle and the working condition information of the current vehicle.
3. The method of claim 1, wherein the environmental information includes an ambient temperature, and wherein determining the corresponding environmental correction factor based on the environmental information of the current vehicle comprises:
acquiring a first target lookup table corresponding to the environment information, wherein the first target lookup table comprises correction coefficients corresponding to a plurality of sample environment temperatures;
and acquiring an environment correction coefficient corresponding to the environment information of the current vehicle from the first target lookup table.
4. The method of claim 1, wherein the current vehicle operating condition information comprises an exhaust temperature and an engine water temperature, and the determining the basic rotation speed of the electronic water pump under the current operating condition according to the current vehicle operating condition information comprises:
acquiring a second target lookup table corresponding to the working condition information, wherein the second target lookup table comprises basic rotating speeds corresponding to combinations of a plurality of different exhaust temperatures and engine water temperatures;
and acquiring the basic rotating speed corresponding to the working condition information of the current vehicle from the second target lookup table.
5. The method according to claim 3, wherein the environmental information further includes atmospheric pressure, and the first target look-up table specifically includes correction coefficients corresponding to a plurality of different combinations of sample environmental temperatures and atmospheric pressure.
6. The method according to any one of claims 2-5, wherein the controlling the electronic water pump to operate at a target speed comprises:
determining whether the target rotating speed exceeds a preset maximum rotating speed threshold value;
when the target rotating speed does not exceed the preset maximum rotating speed threshold value, controlling the electronic water pump to work at the target rotating speed;
and when the target rotating speed exceeds the preset maximum rotating speed threshold value, controlling the electronic water pump to work under the preset maximum rotating speed threshold value.
7. A protection control device for a urea injection nozzle, comprising:
the acquisition module is used for acquiring the environmental information of the current vehicle and the working condition information of the current vehicle;
the correction coefficient determining module is used for determining a corresponding environment correction coefficient according to the environment information of the current vehicle;
the basic rotating speed determining module is used for determining the basic rotating speed of the electronic water pump under the current working condition according to the working condition information of the current vehicle;
the rotating speed adjusting module is used for adjusting the rotating speed of the electronic water pump for cooling the circulating water of the urea nozzle according to the environment correction coefficient and the basic rotating speed of the electronic water pump under the current working condition, and comprises: the target rotating speed determining unit is used for correcting the basic rotating speed of the electronic water pump under the current working condition into a target rotating speed according to the environment correction coefficient; and the execution unit is used for controlling the electronic water pump to work at the target rotating speed.
8. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor, when executed, implements a method of urea nozzle protection control as claimed in any one of claims 1 to 7.
9. A vehicle characterized in that it comprises a nozzle device for carrying out the method of urea nozzle protection control according to any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110573093.7A CN114645770B (en) | 2021-05-25 | 2021-05-25 | Protection control method and device for urea nozzle, electronic equipment and vehicle |
Applications Claiming Priority (1)
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