CN114961963A - Method, device and equipment for controlling intercooling circulating water pump and storage medium - Google Patents
Method, device and equipment for controlling intercooling circulating water pump and storage medium Download PDFInfo
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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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B29/00—Engines characterised by provision for charging or scavenging not provided for in groups F02B25/00, F02B27/00 or F02B33/00 - F02B39/00; Details thereof
- F02B29/04—Cooling of air intake supply
- F02B29/0493—Controlling the air charge temperature
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/02—Stopping, starting, unloading or idling control
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/06—Control using electricity
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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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- 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
- Y02T10/40—Engine management systems
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Abstract
The invention discloses a method, a device and equipment for controlling an intercooling circulating water pump and a storage medium. The method comprises the following steps: responding to a triggering intercooling circulating water pump starting condition, and starting the intercooling circulating water pump; determining control parameters of the intercooling water pump according to the vehicle running information and the driving environment information; and controlling the intercooling water circulating pump according to the control parameters. According to the technical scheme of the embodiment of the invention, the control precision of the intercooling circulating water pump can be improved, and the energy consumption of the water pump is reduced while the cooling requirement is ensured.
Description
Technical Field
The invention relates to the technical field of engine control, in particular to a method, a device, equipment and a storage medium for controlling an intercooling circulating water pump.
Background
Due to the increasingly severe problems of energy depletion and environmental pollution, more and more countries and regions are demanding requirements for improving the fuel economy of automobiles and reducing the emission of automobile exhaust.
The adoption of supercharged engines and intake air intercooling technologies are common solutions to achieve both of these requirements. In the technology, after air entering from an air filter is pressurized by an air compressor, the intake air density is increased, and the intake air temperature is increased; if the engine is directly fed into the combustion chamber without intermediate cooling, the charging efficiency of the engine is greatly reduced, and the combustion temperature is too high, so that knocking is generated. At this time, the temperature of the compressed gas needs to be reduced by an operating intercooling water circulating pump.
In order to ensure the cooling effect in the prior art, the intercooling water circulating pump keeps a continuous operation state, the energy consumption is increased, and the aging speed of the water pump can be accelerated. And in the running process of the intercooling water circulating pump, the control precision is low.
Disclosure of Invention
The invention provides a method, a device and equipment for controlling an intercooling circulating water pump and a storage medium, which aim to solve the problem of low control precision of the intercooling circulating water pump.
According to an aspect of the present invention, there is provided an intercooling water pump control method, including:
responding to a triggering intercooling circulating water pump starting condition, and starting the intercooling circulating water pump;
determining control parameters of the intercooling water pump according to vehicle running information and running environment information;
and controlling the intercooling water circulating pump according to the control parameters.
According to another aspect of the present invention, there is provided an intercooling water pump control apparatus, including:
the water pump starting module is used for responding to the starting condition of the intercooling circulating water pump, and starting the intercooling circulating water pump;
the control parameter determining module is used for determining control parameters of the intercooling water pump according to vehicle running information and driving environment information;
and the water pump control module is used for controlling the intercooling water circulating pump according to the control parameters.
According to another aspect of the present invention, there is provided an electronic apparatus including:
at least one processor; and
a memory communicatively coupled to the at least one processor; wherein the content of the first and second substances,
the memory stores a computer program executable by the at least one processor, the computer program being executable by the at least one processor to enable the at least one processor to perform the intercooled circulating water pump control method of any embodiment of the present invention.
According to another aspect of the present invention, there is provided a computer readable storage medium storing computer instructions for causing a processor to implement the intercooling water pump control method according to any one of the embodiments of the present invention when executed.
According to the technical scheme of the embodiment of the invention, the intercooling water pump is started in response to the starting condition of triggering the intercooling water pump, the control parameter of the intercooling water pump is determined according to the vehicle running information and the driving environment information, and finally the intercooling water pump is controlled according to the control parameter, so that the problem of low control precision of the intercooling water pump is solved, the intercooling water pump is controlled to be started and stopped according to the vehicle running information, the control parameter of the intercooling water pump is determined according to the vehicle running information and the driving environment information, the control precision of the water pump is improved, and the energy consumption of the water pump is reduced on the premise of ensuring the cooling requirement.
It should be understood that the statements in this section do not necessarily identify key or critical features of the embodiments of the present invention, nor do they necessarily limit the scope of the invention. Other features of the present invention will become apparent from the following description.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a flowchart of an intercooling water pump control method according to an embodiment of the present invention;
fig. 2a is a flowchart of an intercooling water pump control method according to a second embodiment of the present invention;
fig. 2b is a flowchart of calculating the duty ratio of the intercooling water circulating pump according to the second embodiment of the present invention;
FIG. 2c is a flow chart of a feedforward duty cycle calculation provided according to a second embodiment of the invention;
FIG. 2d is a flowchart illustrating calculation of a target intake air temperature according to a second embodiment of the present invention;
FIG. 2e is a flowchart illustrating calculation of the dew point temperature before the throttle according to the second embodiment of the present invention;
FIG. 2f is a flowchart of a proportional-integral duty cycle calculation according to a second embodiment of the present invention;
fig. 3 is a schematic structural diagram of an intercooling water pump control device according to a third embodiment of the present invention;
fig. 4 is a schematic structural diagram of an electronic device for implementing the intercooling water pump control method according to the embodiment of the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in other sequences than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Example one
Fig. 1 is a flowchart of an intercooling water pump control method according to an embodiment of the present invention, where the method is applicable to a case where an intercooling water pump is controlled according to vehicle operation information and driving environment information, and the method may be implemented by an intercooling water pump control device, where the intercooling water pump control device may be implemented in a hardware and/or software manner, and the intercooling water pump control device may be configured in various general-purpose computing devices. As shown in fig. 1, the method includes:
and S110, responding to the triggering of the start condition of the intercooling water circulating pump, and starting the intercooling water circulating pump.
The intercooling circulating water pump is used for driving the cooling liquid to dissipate heat of the intake temperature of the engine, so that the cooling liquid is ensured to circularly flow in the cooling system, the cooling liquid is continuously circulated through the radiator to take away heat, and the engine is prevented from knocking.
The control mode of the existing intercooling circulating water pump is that when an automobile engine is in a starting state, the intercooling circulating water pump can continuously run, the control mode of the intercooling circulating water pump is not refined, unnecessary resource waste can be caused when the intercooling circulating water pump continuously runs under the condition that temperature is not required to be reduced, and meanwhile, the aging of the intercooling circulating water pump can be accelerated.
In the embodiment of the invention, in order to improve the control precision of the intercooling water pump, the starting conditions of the intercooling water pump can be set from multiple dimensions, once one or more starting conditions are triggered, the intercooling water pump is controlled to start, otherwise, the intercooling water pump is kept in a stop running state. Specifically, the starting condition of the intercooling water pump can be set from multiple dimensions such as the running state of an automobile engine, the air inlet temperature of the engine, the torque of the engine and the water temperature of the engine. Through setting up the start condition of multidimension degree, guarantee that intercooling circulating water pump starts under the condition that the inlet air temperature need cool down, keep the stall state under the condition that the inlet air temperature need not cool down, under the prerequisite that satisfies inlet air temperature cooling demand, reduce intercooling circulating water pump's operation energy consumption.
In one specific example, the starting conditions are set from the vehicle engine operating state dimension as: when the engine is changed from a flameout state to a starting state, the intercooling water pump needs to be started for a set time (for example, 10 seconds); the starting conditions are set from the intake air temperature dimension of the engine as: if the inlet air temperature is greater than the preset inlet air temperature threshold, starting the intercooling circulating water pump; the start conditions are set from the torque dimension of the engine as: if the torque of the engine is greater than a preset torque threshold value, starting the intercooling water circulating pump; setting starting conditions from the dimension of engine water temperature as follows: when the vehicle is in an idling state and the water temperature of the engine is higher than a preset water temperature threshold value, the intercooling water circulating pump is started. And starting the intercooling water circulating pump under the condition that one or more starting conditions are met, and keeping the intercooling water circulating pump in a stop running state under the condition that all starting conditions are not met.
Optionally, the start condition of the intercooling water circulating pump includes at least one of:
the engine of the vehicle is changed from a flameout state to a starting state;
the vehicle air inlet temperature is greater than a set air inlet temperature threshold value;
the torque of the vehicle engine is larger than a set torque threshold value;
the temperature difference between the boost pressure temperature and the manifold pressure temperature is less than a set temperature difference threshold;
a first temperature sensor for measuring the temperature of the inlet and outlet gases is failed;
a second temperature sensor for measuring the temperature of the engine is failed, the temperature of the air inlet of the manifold is higher than a manifold temperature threshold value, and the stepping amount of the accelerator pedal is larger than a set stepping threshold value;
when the vehicle is in an idling state, the water temperature of an engine is higher than a set water temperature threshold value;
the intercooling water circulating pump maintains the stop state to exceed the set time threshold.
In this optional embodiment, the following 8 kinds of start conditions of the intercooling water circulating pump are provided:
1. when the engine of the vehicle is changed from a flameout state to a starting state, the intercooling water circulating pump is started. Of course, the start time of the intercooler water pump may be defined, for example, to operate within 10 seconds after the engine is started.
2. When the intake air temperature of the vehicle engine is higher than the set intake air temperature threshold value, the requirement for cooling is high, and therefore the intercooling water circulating pump needs to be started for cooling.
3. When the torque of the engine of the vehicle is larger than the set torque threshold value, it indicates that the vehicle may be in rapid acceleration or climbing, and the like, at this time, the heat generated after the air intake is pressurized is large, and the intercooling water circulating pump needs to be started for cooling. Of course, when the torque of the vehicle engine is lower than the set torque threshold value, the operation of the cold circulating water pump can be stopped.
4. When the temperature difference between the supercharging pressure temperature of the vehicle engine and the manifold pressure temperature is smaller than a set temperature difference threshold value, the cooling requirement is high, and the intercooling water circulating pump needs to be started to cool. And when the temperature difference between the two is greater than or equal to the set temperature difference threshold value, the operation of the intercooling water circulating pump can be stopped.
5. When the first temperature sensor of the air inlet and outlet temperature of the user vehicle in the vehicle breaks down, the air inlet and outlet temperature cannot be measured, or the correct air inlet and outlet temperature cannot be measured, so that whether the temperature needs to be reduced or not cannot be accurately judged. In order to avoid overhigh combustion temperature in the engine, the intercooling water circulating pump can be directly controlled to be started.
6. A second sensor used for measuring the temperature of the engine in the vehicle breaks down, the air inlet temperature of the manifold is higher than a manifold temperature threshold value, the stepping amount of the accelerator pedal is larger than a set stepping threshold value, the temperature of the engine cannot be measured at the moment, or the correct temperature of the engine cannot be measured, the air inlet temperature of the manifold is higher than the manifold temperature threshold value at the moment, the stepping amount of the accelerator pedal is higher, and the requirement for temperature reduction is larger. In order to avoid overhigh combustion temperature in the engine, the intercooling water circulating pump can be directly started at the moment.
7. When the vehicle is in an idling state and the water temperature of the engine is higher than a set water temperature threshold value, the intercooling water circulating pump also needs to be started for cooling.
8. If the intercooling water circulating pump is kept in a stop state for a long time, the cooling liquid in the cooling liquid circulating pipeline cannot keep a flowing state. Then, a part of the cooling liquid in the cooling liquid circulation pipeline is continuously heated to generate chemical change, and the subsequent cooling effect is influenced. Therefore, after the intercooling water pump is maintained in a stop state for more than a set time threshold (for example, 120 seconds), the intercooling water pump can be started to avoid the cooling liquid from being static for a long time.
In all of the above 8 cases, the intercooling water circulating pump needs to be started to cool the engine. Specifically, the intercooling water pump may be started when one or more of the above conditions are satisfied. If the above conditions are not met, the intercooling water circulating pump can be kept out of operation.
Certainly, when the intercooling water pump needs to be diagnosed to work normally, a user can request to start the intercooling water pump through the diagnostic instrument, and at this time, the intercooling water pump is also controlled to start so as to detect whether the intercooling water pump can work normally.
And S120, determining control parameters of the intercooling water pump according to the vehicle running information and the driving environment information.
After the intercooling water pump is started, the control demand duty ratio of the intercooling water pump needs to be calculated. In order to improve the control precision of the intercooling water pump, the vehicle operation information and the driving environment information can be considered at the same time. Specifically, after the intercooling water circulating pump is started, vehicle operation information and driving environment information can be acquired according to a preset sampling frequency. And then calculating accurate control parameters of the intercooling water pump according to the vehicle running information and the driving environment information.
The vehicle operation information may include an intake air temperature of the engine, an engine water temperature, a vehicle speed, an engine speed, a load, and the like. The driving environment information may include an ambient temperature having a direct relationship with the intake air temperature, an altitude factor, and the like.
In a specific example, the duty ratio required by feedforward control and the duty ratio required by Proportional Integral (PI) control can be calculated according to the vehicle operation information and the driving environment information, and finally the duty ratio required by intercooling water pump control is determined according to the duty ratio required by feedforward control and the duty ratio required by PI control.
And S130, controlling the intercooling water circulating pump according to the control parameters.
In the embodiment of the invention, after the control parameter of the intercooling water pump is obtained through calculation, the intercooling water pump is controlled according to the control parameter. By comprehensively considering the vehicle running information and the driving environment information and calculating the control parameters of the intercooling circulating water pump, the control precision of the intercooling circulating water pump is improved, and the resource waste can be avoided.
According to the technical scheme of the embodiment of the invention, the intercooling water pump is started in response to the triggering intercooling water pump starting condition, the control parameter of the intercooling water pump is further determined according to the vehicle running information and the driving environment information, and the intercooling water pump is finally controlled according to the control parameter, so that the accurate control of the intercooling water pump can be realized, and compared with the control that the intercooling water pump is in a continuous running state, the energy consumption of the water pump can be reduced.
Example two
Fig. 2a is a flowchart of an intercooling water pump control method according to a second embodiment of the present invention, which is further detailed on the basis of the above embodiment and provides specific steps for determining control parameters of an intercooling water pump according to vehicle operation information and driving environment information. As shown in fig. 2a, the method comprises:
and S210, responding to the triggering of the start condition of the intercooling water circulating pump, and starting the intercooling water circulating pump.
And S220, determining a feedforward duty ratio required by feedforward control according to the intake air temperature in the vehicle operation information.
The control parameter of the intercooling water pump can be a target duty ratio corresponding to the intercooling water pump. The target duty ratio may include, among other things, a feedforward duty ratio required for feedforward control, and a proportional-integral duty ratio required for proportional-integral control.
In the embodiment of the invention, as shown in fig. 2b, the process of determining the duty ratio of the intercooling water pump firstly needs to determine the feedforward duty ratio required by feedforward control according to the intake air temperature contained in the vehicle operation information.
Specifically, the first two-dimensional graph can be searched according to the current intake air temperature and the engine water temperature of the vehicle, so that the duty ratio matched with the current intake air temperature and the engine water temperature is determined. The second two-dimensional table can also be searched according to the current air inlet temperature and the current oil temperature of the engine of the vehicle, so that the duty ratio matched with the current air inlet temperature and the current oil temperature of the engine can be determined.
The first two-dimensional graph is constructed according to an actual vehicle experiment, and the only duty ratio can be determined according to the air inlet temperature and the engine water temperature in the first two-dimensional graph; similarly, the second two-dimensional graph is a graph constructed according to actual vehicle experiments, and in the second two-dimensional graph, the unique duty ratio can be determined according to the air inlet temperature and the engine oil temperature.
After the duty ratio is determined according to the two-dimensional graph, the obtained duty ratio can be directly used as a feedforward duty ratio required by feedforward control. In order to further improve the control accuracy of the intercooler water pump, the duty ratio obtained as described above may be corrected in accordance with the engine speed and the load, and the corrected duty ratio may be finally used as a feed-forward duty ratio.
Optionally, determining a feedforward duty ratio required by feedforward control according to the intake air temperature in the vehicle operation information includes:
determining a first duty ratio required by feed-forward control according to the intake air temperature and the engine water temperature in the vehicle operation information;
and correcting the first duty ratio according to the engine speed and the load in the vehicle running information to obtain a feedforward duty ratio.
In this alternative embodiment, a specific way of determining the feedforward duty ratio required for the feedforward control according to the intake air temperature in the vehicle operation information is provided: as shown in fig. 2c, the first two-dimensional icon may be first looked up to determine the first duty cycle required for the feed-forward control based on the intake air temperature and the engine water temperature in the vehicle operation information. Further, according to the engine speed and the load in the vehicle running information, a third two-dimensional graph is searched, and a first duty ratio correction parameter related to the current engine speed and the current load is determined. And finally, multiplying the first duty ratio by the first duty ratio correction parameter to obtain the feedforward duty ratio.
And S230, determining the intake air target temperature according to the engine speed and the load in the vehicle running information.
In order to calculate the duty ratio required for proportional-integral control, it is first necessary to determine the intake air target temperature from the engine speed and load in the vehicle operation information. Specifically, the required intake air temperature may be found as the target intake air temperature depending on the engine speed and load. The searched intake air temperature may be corrected by the engine water temperature, and the corrected intake air temperature may be determined as the target intake air temperature.
Optionally, determining the intake air target temperature according to the engine speed and the load in the vehicle operation information includes:
determining an initial target temperature required by PI control according to the rotation speed and load of the engine and the front dew point temperature of a throttle valve; the front dew point temperature of the throttle valve is determined by the air inlet temperature, the air inlet humidity and the altitude factor in the driving environment information in the vehicle operation information;
and correcting the initial target temperature according to the engine water temperature in the vehicle running information to obtain the intake air target temperature.
In this alternative embodiment, a specific manner of determining the intake air target temperature according to the engine speed and load in the vehicle operation information is provided: as shown in fig. 2d, first, an initial target temperature required by PI control is determined according to the engine speed, the load and the dew point temperature in front of the throttle valve, and then a first one-dimensional graph is searched according to the engine water temperature included in the vehicle operation information, a first temperature correction parameter associated with the engine water temperature is determined, and the initial target temperature is corrected to obtain an intake air target temperature.
The dew point temperature before the throttle valve is the temperature of dew formed by air in front of the throttle valve, and is determined by the air inlet temperature, the air inlet humidity and the altitude factor in the driving environment information in the vehicle operation information. And the dew point temperature in front of the throttle valve is introduced, so that the condition that dew is formed because the air inlet temperature determined only according to the rotating speed and the load of the engine is lower than the dew point temperature in front of the throttle valve can be avoided.
The manner of acquiring the dew point temperature before the throttle valve is shown in fig. 2 e: and searching a fifth two-dimensional icon according to the air inlet temperature and the air inlet humidity, determining the initial front throttle dew point temperature associated with the air inlet temperature and the air inlet humidity, finally searching a temperature correction parameter associated with the altitude factor in the second one-dimensional graph through the altitude factor, and correcting the initial front throttle dew point temperature to obtain the final front throttle dew point temperature.
Optionally, determining an initial target temperature required for PI control according to the engine speed, the load and the dew point temperature before the throttle valve includes:
determining candidate intake air temperature according to the engine speed and load;
and taking the front throttle dew point temperature as the initial target temperature when the candidate air inlet temperature is lower than the front throttle dew point temperature.
In this alternative embodiment, a way is provided to determine the initial target temperature required for PI control based on engine speed, load and pre-throttle dew point temperature, as shown in FIG. 2 d: first, according to the engine speed and the load, a fourth two-dimensional icon is searched, and candidate air inlet temperature related to the current engine speed and the current load is determined. Further, in order to avoid dew formation due to the fact that the candidate intake air temperature determined according to the fourth two-dimensional icon is lower than the dew point temperature, the dew point temperature in front of the throttle valve can be used as the initial target temperature when the candidate intake air temperature is lower than the dew point temperature in front of the throttle valve.
S240, determining a proportional-integral duty ratio required by proportional-integral PI control according to the air inlet temperature and the air inlet target temperature, and determining an initial duty ratio according to the feedforward duty ratio and the proportional-integral duty ratio.
In the embodiment of the invention, the proportional integral duty ratio of PI control is determined according to the air inlet temperature and the air inlet target temperature. And determining an initial duty ratio according to the feedforward duty ratio and the PI duty ratio. Specifically, the feedforward duty ratio and the PI duty ratio may be added to obtain an initial duty ratio.
Optionally, determining a proportional-integral duty ratio required by proportional-integral PI control according to the intake air temperature and the intake air target temperature includes:
determining a proportional duty ratio required for proportional control and a second duty ratio required for an integrating part according to a temperature difference between the intake air temperature and the intake air target temperature;
and integrating the second duty ratio through an integrator to obtain an integral duty ratio, and determining the proportional integral duty ratio according to the proportional duty ratio and the integral duty ratio.
In this alternative embodiment, a specific way to determine the proportional-integral duty ratio required for proportional-integral PI control according to the intake air temperature and the intake air target temperature is provided, as shown in fig. 2 f: first, a proportional duty ratio required for proportional control corresponding to a temperature difference is determined by referring to a proportional map in accordance with the temperature difference between an intake air temperature and an intake air target temperature, and a second duty ratio required for integral control corresponding to the temperature difference is determined by referring to an integral map. Further, the second duty ratio is integrated by an integrator to obtain an integrated duty ratio. And finally, summing the proportional duty ratio and the integral duty ratio to obtain the proportional integral duty ratio.
And S250, correcting the initial duty ratio according to the environment temperature in the driving environment information and the vehicle speed in the vehicle running information to obtain a target duty ratio for controlling the intercooling water pump, and taking the target duty ratio as a control parameter of the intercooling water pump.
And finally, correcting the initial duty ratio according to the ambient temperature in the driving environment information and the vehicle speed in the vehicle running information to obtain a target duty ratio for controlling the intercooling water pump, and taking the target duty ratio as a control parameter of the intercooling water pump. Specifically, the sixth two-dimensional graph can be searched according to the ambient temperature in the driving environment information and the vehicle speed in the vehicle running information, a second duty ratio correction parameter associated with the ambient temperature and the vehicle speed is obtained, and finally the initial duty ratio is corrected by using the second duty ratio correction parameter, so that the duty ratio of the intercooling water pump is obtained.
In addition, in order to avoid damage to the intercooling water pump, the calculated duty ratio should be limited within the operable range of the intercooling water pump. For example, the duty cycle of the intercooled circulating water pump is limited to between 10-90. When the calculated duty ratio is lower than 10, the duty ratio may be determined to be 10. Similarly, when the calculated duty ratio is higher than 90, the duty ratio may be determined to be 90.
And S260, controlling the intercooling water circulating pump according to the control parameters.
According to the technical scheme of the embodiment of the invention, the control parameters of the intercooling water pump are determined according to the air inlet temperature, the engine water temperature, the vehicle speed, the engine rotating speed and the load in the vehicle running information and the environmental temperature and the altitude factor in the driving environment information, so that the control precision of the intercooling water pump is improved.
EXAMPLE III
Fig. 3 is a schematic structural diagram of an intercooling water pump control device according to a third embodiment of the present invention. As shown in fig. 3, the apparatus includes:
a water pump starting module 310, configured to start the intercooling water circulating pump in response to a triggering intercooling water circulating pump starting condition;
the control parameter determining module 320 is configured to determine a control parameter of the intercooling water pump according to vehicle operation information and driving environment information;
and the water pump control module 330 is configured to control the intercooling water circulating pump according to the control parameter.
According to the technical scheme of the embodiment of the invention, the intercooling circulating water pump is started in response to the triggering intercooling circulating water pump starting condition, the control parameter of the intercooling circulating water pump is further determined according to the vehicle running information and the driving environment information, and finally the intercooling circulating water pump is controlled according to the control parameter, so that the accurate control of the intercooling circulating water pump can be realized, and compared with the control that the intercooling circulating water pump is in a continuous running state, the energy consumption of the water pump can be reduced.
Optionally, the start condition of the intercooling water circulating pump includes at least one of:
changing the engine of the vehicle from a flameout state to a starting state;
the vehicle air inlet temperature is greater than a set air inlet temperature threshold value;
the torque of the vehicle engine is larger than a set torque threshold value;
the temperature difference between the boost pressure temperature and the manifold pressure temperature is less than a set temperature difference threshold;
a first temperature sensor for measuring the temperature of the inlet and outlet gases is failed;
a second temperature sensor for measuring the temperature of the engine is failed, the temperature of the air inlet of the manifold is higher than a manifold temperature threshold value, and the stepping amount of the accelerator pedal is larger than a set stepping threshold value;
when the vehicle is in an idling state, the water temperature of an engine is higher than a set water temperature threshold value;
the intercooling water circulating pump maintains the stop state to exceed the set time threshold.
Optionally, the control parameter determining module 320 includes:
the feedforward duty ratio determining unit is used for determining a feedforward duty ratio required by feedforward control according to the air inlet temperature in the vehicle operation information;
an intake target temperature determination unit for determining an intake target temperature based on the engine speed and load in the vehicle operation information;
the initial duty ratio determining unit is used for determining a proportional-integral duty ratio required by proportional-integral PI control according to the inlet air temperature and the inlet air target temperature, and determining an initial duty ratio according to the feedforward duty ratio and the proportional-integral duty ratio;
and the control parameter determining unit is used for correcting the initial duty ratio according to the ambient temperature in the driving environment information and the vehicle speed in the vehicle running information to obtain a target duty ratio for controlling the intercooling water pump, and the target duty ratio is used as a control parameter of the intercooling water pump.
Optionally, the feedforward duty ratio determining unit is specifically configured to:
determining a first duty ratio required by feed-forward control according to the intake air temperature and the engine water temperature in the vehicle operation information;
and correcting the first duty ratio according to the engine speed and the load in the vehicle running information to obtain a feedforward duty ratio.
Optionally, the initial duty ratio determining unit is specifically configured to:
determining a proportional duty ratio required for proportional control and a second duty ratio required for an integrating part according to a temperature difference between the intake air temperature and the intake air target temperature;
and integrating the second duty ratio through an integrator to obtain an integral duty ratio, and determining a proportional integral duty ratio according to the proportional duty ratio and the integral duty ratio.
Optionally, the intake air target temperature determination unit includes:
the initial target temperature determining subunit is used for determining an initial target temperature required by PI control according to the engine speed, the load and the dew point temperature in front of the throttle valve; the front dew point temperature of the throttle valve is determined by the air inlet temperature, the air inlet humidity and the altitude factor in the driving environment information in the vehicle operation information;
and the intake air target temperature determining subunit is used for correcting the initial target temperature according to the engine water temperature in the vehicle running information to obtain the intake air target temperature.
Optionally, the initial target temperature determining subunit is specifically configured to:
determining candidate intake air temperature according to the engine speed and load;
taking the pre-throttle dew point temperature as the initial target temperature when the candidate intake air temperature is lower than the pre-throttle dew point temperature.
The intercooling circulating water pump control device provided by the embodiment of the invention can execute the intercooling circulating water pump control method provided by any embodiment of the invention, and has corresponding functional modules and beneficial effects of the execution method.
Example four
FIG. 4 shows a schematic block diagram of an electronic device 10 that may be used to implement an embodiment of the invention. Electronic devices are intended to represent various forms of digital computers, such as laptops, desktops, workstations, personal digital assistants, servers, blade servers, mainframes, and other appropriate computers. The electronic device may also represent various forms of mobile devices, such as personal digital assistants, cellular phones, smart phones, wearable devices (e.g., helmets, glasses, watches, etc.), and other similar computing devices. The components shown herein, their connections and relationships, and their functions, are meant to be exemplary only, and are not meant to limit implementations of the inventions described and/or claimed herein.
As shown in fig. 4, the electronic device 10 includes at least one processor 11, and a memory communicatively connected to the at least one processor 11, such as a Read Only Memory (ROM)12, a Random Access Memory (RAM)13, and the like, wherein the memory stores a computer program executable by the at least one processor, and the processor 11 can perform various suitable actions and processes according to the computer program stored in the Read Only Memory (ROM)12 or the computer program loaded from a storage unit 18 into the Random Access Memory (RAM) 13. In the RAM 13, various programs and data necessary for the operation of the electronic apparatus 10 can also be stored. The processor 11, the ROM 12, and the RAM 13 are connected to each other via a bus 14. An input/output (I/O) interface 15 is also connected to bus 14.
A number of components in the electronic device 10 are connected to the I/O interface 15, including: an input unit 16 such as a keyboard, a mouse, or the like; an output unit 17 such as various types of displays, speakers, and the like; a storage unit 18 such as a magnetic disk, an optical disk, or the like; and a communication unit 19 such as a network card, modem, wireless communication transceiver, etc. The communication unit 19 allows the electronic device 10 to exchange information/data with other devices via a computer network such as the internet and/or various telecommunication networks.
The processor 11 may be a variety of general and/or special purpose processing components having processing and computing capabilities. Some examples of processor 11 include, but are not limited to, a Central Processing Unit (CPU), a Graphics Processing Unit (GPU), various specialized Artificial Intelligence (AI) computing chips, various processors running machine learning model algorithms, a Digital Signal Processor (DSP), and any suitable processor, controller, microcontroller, or the like. The processor 11 performs the various methods and processes described above, such as an intercooled circulating water pump control method.
In some embodiments, the intercooling water pump control method may be implemented as a computer program tangibly embodied in a computer readable storage medium, such as the storage unit 18. In some embodiments, part or all of the computer program may be loaded and/or installed onto the electronic device 10 via the ROM 12 and/or the communication unit 19. When the computer program is loaded into RAM 13 and executed by processor 11, one or more steps of the intercooling water pump control method described above may be performed. Alternatively, in other embodiments, the processor 11 may be configured to perform the intercooled circulating water pump control method by any other suitable means (e.g., by means of firmware).
Various implementations of the systems and techniques described here above may be implemented in digital electronic circuitry, integrated circuitry, Field Programmable Gate Arrays (FPGAs), Application Specific Integrated Circuits (ASICs), Application Specific Standard Products (ASSPs), system on a chip (SOCs), Complex Programmable Logic Devices (CPLDs), computer hardware, firmware, software, and/or combinations thereof. These various embodiments may include: implemented in one or more computer programs that are executable and/or interpretable on a programmable system including at least one programmable processor, which may be special or general purpose, receiving data and instructions from, and transmitting data and instructions to, a storage system, at least one input device, and at least one output device.
A computer program for implementing the methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus, such that the computer programs, when executed by the processor, cause the functions/acts specified in the flowchart and/or block diagram block or blocks to be performed. A computer program can execute entirely on a machine, partly on the machine, as a stand-alone software package, partly on the machine and partly on a remote machine or entirely on the remote machine or server.
In the context of the present invention, a computer-readable storage medium may be a tangible medium that can contain, or store a computer program for use by or in connection with an instruction execution system, apparatus, or device. A computer readable storage medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing. Alternatively, the computer readable storage medium may be a machine readable signal medium. More specific examples of a machine-readable storage medium would include an electrical connection based on one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
To provide for interaction with a user, the systems and techniques described here can be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to a user; and a keyboard and a pointing device (e.g., a mouse or a trackball) by which a user can provide input to the electronic device. Other kinds of devices may also be used to provide for interaction with a user; for example, feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form, including acoustic, speech, or tactile input.
The systems and techniques described here can be implemented in a computing system that includes a back-end component (e.g., as a data server), or that includes a middleware component (e.g., an application server), or that includes a front-end component (e.g., a user computer having a graphical user interface or a web browser through which a user can interact with an implementation of the systems and techniques described here), or any combination of such back-end, middleware, or front-end components. The components of the system can be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: local Area Networks (LANs), Wide Area Networks (WANs), blockchain networks, and the Internet.
The computing system may include clients and servers. A client and server are generally remote from each other and typically interact through a communication network. The relationship of client and server arises by virtue of computer programs running on the respective computers and having a client-server relationship to each other. The server can be a cloud server, also called a cloud computing server or a cloud host, and is a host product in a cloud computing service system, so that the defects of high management difficulty and weak service expansibility in the traditional physical host and VPS service are overcome.
It should be understood that various forms of the flows shown above may be used, with steps reordered, added, or deleted. For example, the steps described in the present invention may be executed in parallel, sequentially, or in different orders, and are not limited herein as long as the desired results of the technical solution of the present invention can be achieved.
The above-described embodiments should not be construed as limiting the scope of the invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions may be made in accordance with design requirements and other factors. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An intercooling circulating water pump control method is characterized by comprising the following steps:
responding to a triggering intercooling circulating water pump starting condition, and starting the intercooling circulating water pump;
determining control parameters of the intercooling water pump according to vehicle running information and running environment information;
and controlling the intercooling water circulating pump according to the control parameters.
2. The method of claim 1, wherein the intercooled recycle water pump startup conditions include at least one of:
the engine of the vehicle is changed from a flameout state to a starting state;
the vehicle air inlet temperature is greater than a set air inlet temperature threshold value;
the torque of the vehicle engine is larger than a set torque threshold value;
the temperature difference between the boost pressure temperature and the manifold pressure temperature is less than a set temperature difference threshold;
a first temperature sensor for measuring the temperature of the inlet and outlet gases is failed;
a second temperature sensor for measuring the temperature of the engine is failed, the temperature of the air inlet of the manifold is higher than a manifold temperature threshold value, and the stepping amount of the accelerator pedal is larger than a set stepping threshold value;
when the vehicle is in an idling state, the water temperature of the engine is higher than a set water temperature threshold value;
the intercooling water circulating pump maintains the stop state to exceed the set time threshold.
3. The method of claim 1, wherein determining control parameters for the intercooling water pump based on vehicle operating information and driving environment information comprises:
determining a feedforward duty ratio required by feedforward control according to the intake air temperature in the vehicle operation information;
determining an intake target temperature according to the engine speed and load in the vehicle operation information;
determining a proportional integral duty ratio required by proportional integral PI control according to the inlet air temperature and the inlet air target temperature, and determining an initial duty ratio according to the feedforward duty ratio and the proportional integral duty ratio;
and correcting the initial duty ratio according to the ambient temperature in the driving environment information and the vehicle speed in the vehicle running information to obtain a target duty ratio for controlling the intercooling water pump, and taking the target duty ratio as a control parameter of the intercooling water pump.
4. The method of claim 3, wherein determining a feed-forward duty cycle required for feed-forward control based on the intake air temperature in the vehicle operation information comprises:
determining a first duty ratio required by feed-forward control according to the intake air temperature and the engine water temperature in the vehicle operation information;
and correcting the first duty ratio according to the engine speed and the load in the vehicle running information to obtain a feedforward duty ratio.
5. The method of claim 3, wherein determining a proportional-integral duty cycle required for proportional-integral PI control based on the intake air temperature and an intake air target temperature comprises:
determining a proportional duty ratio required for proportional control and a second duty ratio required for an integrating part according to a temperature difference between the intake air temperature and the intake air target temperature;
and integrating the second duty ratio through an integrator to obtain an integral duty ratio, and determining a proportional integral duty ratio according to the proportional duty ratio and the integral duty ratio.
6. The method of claim 3, wherein determining the intake air target temperature based on the engine speed and load in the vehicle operation information comprises:
determining an initial target temperature required by PI control according to the rotation speed and load of the engine and the front dew point temperature of a throttle valve; the front dew point temperature of the throttle valve is determined by the air inlet temperature, the air inlet humidity and the altitude factor in the driving environment information in the vehicle operation information;
and correcting the initial target temperature according to the engine water temperature in the vehicle running information to obtain an intake air target temperature.
7. The method of claim 6, wherein determining an initial target temperature required for PI control as a function of engine speed, load, and pre-throttle dew point temperature comprises:
determining candidate intake air temperature according to the engine speed and load;
taking the pre-throttle dew point temperature as the initial target temperature when the candidate intake air temperature is lower than the pre-throttle dew point temperature.
8. An intercooling water pump control device, characterized by comprising:
the water pump starting module is used for responding to the starting condition of the intercooling circulating water pump, and starting the intercooling circulating water pump;
the control parameter determining module is used for determining control parameters of the intercooling water pump according to vehicle running information and driving environment information;
and the water pump control module is used for controlling the intercooling water circulating pump according to the control parameters.
9. An electronic device, characterized in that the electronic device comprises:
at least one processor; and
a memory communicatively coupled to the at least one processor; wherein the content of the first and second substances,
the memory stores a computer program executable by the at least one processor to enable the at least one processor to perform the intercooled circulating water pump control method of any one of claims 1-7.
10. A computer readable storage medium having stored thereon computer instructions for causing a processor to execute a method for intercooling water pump control as claimed in any one of claims 1 to 7.
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