CN114961963B - Intercooling circulating water pump control method, device, equipment and storage medium - Google Patents
Intercooling circulating water pump control method, device, equipment and storage medium Download PDFInfo
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- CN114961963B CN114961963B CN202210507680.0A CN202210507680A CN114961963B CN 114961963 B CN114961963 B CN 114961963B CN 202210507680 A CN202210507680 A CN 202210507680A CN 114961963 B CN114961963 B CN 114961963B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 201
- 238000000034 method Methods 0.000 title claims abstract description 44
- 230000004044 response Effects 0.000 claims abstract description 7
- 238000004590 computer program Methods 0.000 claims description 17
- 230000007613 environmental effect Effects 0.000 claims description 7
- 238000001816 cooling Methods 0.000 abstract description 17
- 238000005265 energy consumption Methods 0.000 abstract description 6
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- 238000012937 correction Methods 0.000 description 6
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- 230000008569 process Effects 0.000 description 5
- 238000002485 combustion reaction Methods 0.000 description 4
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Classifications
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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
-
- 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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- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
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- Thermal Sciences (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Abstract
The invention discloses a method, a device, equipment and a storage medium for controlling an intercooling circulating water pump. The method comprises the following steps: starting the intercooling circulating water pump in response to triggering the intercooling circulating water pump starting condition; determining control parameters of the intercooling circulating water pump according to vehicle running information and driving environment information; and controlling the intercooling circulating water pump according to the control parameters. According to the technical scheme provided by the embodiment of the invention, the control precision of the intercooling circulating water pump can be improved, the cooling requirement is ensured, and the energy consumption of the water pump is reduced.
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 exhaustion and environmental pollution, more and more countries and regions are raising requirements for improving fuel economy of automobiles and reducing exhaust emissions of automobiles.
The use of supercharged engines and charge air intercooling techniques is a common solution to both of the above requirements. In this technique, after the air taken in by the air filter is pressurized by the compressor, the intake air density is increased and the intake air temperature is increased; if the engine directly enters the combustion chamber without intermediate cooling, the charging efficiency of the engine is greatly reduced, and the combustion temperature is excessively high, so that knocking occurs. At this time, the compressed gas needs to be cooled by an operating intercooling circulating water pump.
In order to guarantee the cooling effect among the prior art, intercooler circulating water pump keeps continuously running state, and the energy consumption increases and can accelerate the ageing speed of water pump. In addition, in the running process of the intercooling circulating water pump, the control precision is lower.
Disclosure of Invention
The invention provides a method, a device, equipment and a storage medium for controlling an intercooling circulating water pump, which are used for solving 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 circulating water pump control method, including:
starting the intercooling circulating water pump in response to triggering the intercooling circulating water pump starting condition;
determining control parameters of the intercooling circulating water pump according to vehicle running information and driving environment information;
and controlling the intercooling circulating water pump according to the control parameters.
According to another aspect of the present invention, there is provided an intercooling circulating water pump control device comprising:
the water pump starting module is used for responding to the starting condition of the trigger intercooling circulating water pump and starting the intercooling circulating water pump;
the control parameter determining module is used for determining the control parameters of the intercooling circulating water pump according to the vehicle running information and the driving environment information;
and the water pump control module is used for controlling the intercooling circulating water 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 memory stores a computer program executable by the at least one processor, and the computer program is executed by the at least one processor, so that the at least one processor can execute the method for controlling the intercooler water pump according to 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 execute the method for controlling an intercooler circulating water pump according to any of the embodiments of the present invention.
According to the technical scheme, the starting condition of the intercooling circulating water pump is triggered, the intercooling circulating water pump is started, the control parameters of the intercooling circulating water pump are determined according to the vehicle running information and the driving environment information, the intercooling circulating water pump is finally controlled according to the control parameters, the problem that the control accuracy of the intercooling circulating water pump is low is solved, the starting and stopping of the intercooling circulating water pump are controlled according to the vehicle running information, the control parameters of the intercooling circulating water pump are determined according to the vehicle running information and the driving environment information, the control accuracy of the water pump is improved, and the energy consumption of the water pump is reduced on the premise that the cooling requirement is guaranteed.
It should be understood that the description in this section is not intended to identify key or critical features of the embodiments of the invention or to delineate the scope of the invention. Other features of the present invention will become apparent from the description that follows.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a flowchart of a control method of an intercooler circulating water pump according to a first embodiment of the present invention;
fig. 2a is a flowchart of a method for controlling an intercooler circulating water pump according to a second embodiment of the present invention;
fig. 2b is a flow chart of duty cycle calculation of the intercooler circulating water pump according to the second embodiment of the present invention;
FIG. 2c is a flow chart of feedforward duty cycle calculation provided according to a second embodiment of the present invention;
fig. 2d is a flowchart of calculating a target intake air temperature according to the second embodiment of the present invention;
FIG. 2e is a flow chart of a throttle front dew point temperature calculation provided in accordance with a second embodiment of the present invention;
FIG. 2f is a proportional-integral duty cycle calculation flow chart provided in accordance with a second embodiment of the present invention;
fig. 3 is a schematic structural diagram of an intercooler water pump control apparatus according to a third embodiment of the present invention;
fig. 4 is a schematic structural diagram of an electronic device for implementing the method for controlling the intercooler circulating water pump according to an embodiment of the present invention.
Detailed Description
In order that those skilled in the art will better understand the present invention, a technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present invention and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise 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 1
Fig. 1 is a flowchart of an intercooler water pump control method according to an embodiment of the present invention, where the method may be performed by an intercooler water pump control apparatus according to vehicle operation information and driving environment information, the intercooler water pump control apparatus may be implemented in hardware and/or software, and the intercooler water pump control apparatus may be configured in various general purpose computing devices. As shown in fig. 1, the method includes:
and S110, responding to a trigger intercooling circulating water pump starting condition, and starting the intercooling circulating water pump.
The intercooling circulating water pump is used for driving the cooling liquid to dissipate heat at the air inlet temperature of the engine, so that the cooling liquid is ensured to circularly flow in the cooling system, the cooling liquid is enabled to continuously circulate through the radiator, heat is taken away, and knocking of the engine is avoided.
The existing control mode of the intercooling circulating water pump is that the 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, the condition that the intercooling circulating water pump continuously runs under the condition that cooling is not needed is caused, unnecessary resource waste is caused, and meanwhile the intercooling circulating water pump is also accelerated to age.
In the embodiment of the invention, in order to improve the control precision of the intercooling circulating water pump, the starting conditions of the intercooling circulating water pump can be set from multiple dimensions, and once one or more starting conditions are triggered, the intercooling circulating water pump is controlled to start, otherwise, the intercooling circulating water pump is kept in a stop running state. Specifically, the starting condition of the intercooling circulating water pump can be set from multiple dimensions such as the running state of the automobile engine, the air inlet temperature of the engine, the torque of the engine, the water temperature of the engine and the like. Through setting up the start condition of multidimension, guarantee that intercooler circulating water pump starts under the condition that intake air temperature needs to cool down, keep the state of stopping under the condition that intake air temperature need not cool down, under the prerequisite that satisfies intake air temperature cooling demand, reduce intercooler circulating water pump's operation energy consumption.
In one specific example, the set start conditions from the automotive engine run state dimension are: when the engine is changed from the flameout state to the starting state, the intercooling circulating water pump needs to be started for a set period of time (for example, 10 seconds); the starting conditions are set from the intake air temperature dimension of the engine: if the air inlet temperature is greater than a preset air inlet temperature threshold value, starting an intercooling circulating water pump; the starting conditions are set from the torque dimension of the engine: if the torque of the engine is larger than a preset torque threshold value, starting an intercooling circulating water pump; the starting conditions are set from the dimension of the water temperature of the engine: and when the vehicle is in an idle state and the water temperature of the engine is higher than a preset water temperature threshold value, starting the intercooling circulating water pump. And under the condition that one or more starting conditions are met, starting the intercooling circulating water pump, and under the condition that all starting conditions are not met, keeping the intercooling circulating water pump in a stop operation state.
Optionally, the starting condition of the intercooling circulating water pump comprises at least one of the following:
changing the vehicle engine from a flameout state to a starting state;
the vehicle air inlet temperature is greater than a set air inlet temperature threshold;
the torque of the vehicle engine is greater than a set torque threshold;
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 inlet and outlet air temperature fails;
a second temperature sensor for measuring the temperature of the engine fails, the intake air temperature of the manifold is higher than a manifold temperature threshold, and the stepping amount of the accelerator pedal is greater than a set stepping threshold;
in an idle state of the vehicle, the water temperature of the engine is higher than a set water temperature threshold value;
the intercooling circulating water pump maintains a stop state exceeding a set time threshold.
In this alternative embodiment, the following 8 conditions for starting the intercooler circulating water pump are provided:
1. when the engine of the vehicle is changed from the flameout state to the start state, the intercooler circulating water pump is started. Of course, the start-up 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, it means that the demand for cooling is high, and therefore, the intercooler circulating water pump needs to be started to cool down.
3. When the torque of the vehicle engine is larger than a set torque threshold, the vehicle is likely to accelerate rapidly or climb a slope at present, and at the moment, the heat generated by the air intake after supercharging is more, and the intercooling circulating water pump needs to be started for cooling. Of course, when the vehicle engine torque is below the set torque threshold, the charge air circulating water pump may be stopped.
4. When the temperature difference between the supercharging pressure temperature and the manifold pressure temperature of the vehicle engine is smaller than the set temperature difference threshold value, the cooling requirement is higher, and the intercooling circulating water pump is required to be started for cooling. And after the temperature difference of the two is greater than or equal to the set temperature difference threshold value, the operation of the intercooling circulating water pump can be stopped.
5. The first temperature sensor of the air inlet and outlet temperature of the user vehicle in the vehicle fails, at this time, the air inlet and outlet temperature cannot be measured, or the correct air inlet and outlet temperature cannot be measured, so that whether cooling is needed cannot be accurately judged. In order to avoid the overhigh combustion temperature in the engine, the starting of the intercooling circulating water pump can be directly controlled.
6. A second sensor for measuring engine temperature in the vehicle breaks down, and the air intake temperature of manifold is higher than manifold temperature threshold, and the trample quantity of accelerator pedal is greater than the setting trample threshold, can't carry out engine temperature measurement this moment, perhaps can't measure correct engine temperature to manifold air intake temperature is higher than manifold temperature threshold this moment, and the trample quantity of accelerator pedal is higher, and is great to the cooling demand. In order to avoid the overhigh combustion temperature in the engine, the intercooling circulating water pump can be directly started at the moment.
7. When the water temperature of the engine is higher than a set water temperature threshold value in an idle state of the vehicle, the intercooling circulating water pump is required to be started for cooling.
8. If the intercooling circulating water pump is maintained in a stopped state for a long time, the coolant in the coolant circulating pipe cannot be maintained in a flowing state. Part of the cooling liquid in the cooling liquid circulation pipeline is continuously heated to generate chemical change, so that the subsequent cooling effect is affected. Therefore, it is possible to start the intercooler water pump after the intercooler water pump maintains the stopped state beyond a set time threshold (for example, 120 seconds), avoiding the coolant from being stationary for a long time.
Under the above 8 conditions, the engine needs to be cooled by starting the intercooling circulating water pump. Specifically, the intercooler water pump may be started up in the case where one or more of the above-described conditions are satisfied. If the conditions are not satisfied, the inter-cooling circulating water pump can be kept to stop running.
Of course, when the diagnosis of whether the intercooling circulating water pump can work normally is needed, a user can request to start the intercooling circulating water pump through the diagnosis instrument, and at the moment, the intercooling circulating water pump can be controlled to start so as to detect whether the intercooling circulating water pump can work normally.
S120, determining control parameters of the intercooling circulating water pump according to vehicle operation information and driving environment information.
After the intercooling circulating water pump is started, the control demand duty ratio of the intercooling circulating water pump needs to be calculated. In order to improve the control precision of the intercooling circulating water pump, vehicle running information and driving environment information can be considered at the same time. Specifically, after the intercooling circulating water pump is started, vehicle running information and driving environment information can be collected according to a preset sampling frequency. And further calculating the accurate control parameters of the intercooling circulating water pump according to the vehicle running information and the driving environment information.
The vehicle operation information may include, among other things, 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 environmental temperature directly related to an intake air temperature, an altitude factor, and the like.
In a specific example, the duty ratio required for the feedforward control may be calculated according to the vehicle running information and the driving environment information, and the duty ratio required for the proportional integral (Proportional Integral, PI) control may be calculated, and finally the duty ratio required for the intercooler circulating water pump control may be determined according to the duty ratio required for the feedforward control and the duty ratio required for the PI control.
S130, controlling the intercooling circulating water pump according to the control parameters.
In the embodiment of the invention, after the control parameters of the intercooling circulating water pump are obtained through calculation, the intercooling circulating water pump is controlled according to the control parameters. By comprehensively considering the vehicle running information and the driving environment information, the control parameters of the intercooling circulating water pump are calculated, the control precision of the intercooling circulating water pump is improved, and the resource waste can be avoided.
According to the technical scheme, the intercooling circulating water pump is started in response to the triggering of the starting condition of the intercooling circulating water pump, so that the control parameters of the intercooling circulating water pump are 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 parameters, so that the accurate control of the intercooling circulating water pump can be realized, and compared with the control of the intercooling circulating water pump in a continuous running state, the energy consumption of the water pump can be reduced.
Example two
Fig. 2a is a flowchart of a control method for an intercooler water pump according to a second embodiment of the present invention, which is further refined on the basis of the foregoing embodiment, and provides specific steps for determining control parameters of the intercooler water pump according to vehicle operation information and driving environment information. As shown in fig. 2a, the method comprises:
and S210, starting the intercooling circulating water pump in response to triggering the starting condition of the intercooling circulating water pump.
S220, determining a feedforward duty ratio required by feedforward control according to the air inlet temperature in the vehicle operation information.
The control parameter of the intercooling circulating water pump may be a target duty ratio corresponding to the intercooling circulating water pump. The target duty ratio may include a feedforward duty ratio required for feedforward control, and a proportional-integral duty ratio required for proportional-integral control, among others.
In the embodiment of the present invention, the process of determining the duty ratio of the intercooler circulating water pump is shown in fig. 2b, and the feedforward duty ratio required by the feedforward control is determined according to the intake air temperature contained in the vehicle operation information.
Specifically, the first two-dimensional chart may be searched according to the current air intake temperature and the engine water temperature of the vehicle, so as to determine the duty ratio matched with the current air intake temperature and the engine water temperature. It is also possible to look up a second two-dimensional map based on the current intake air temperature and the engine oil temperature of the vehicle to determine a duty cycle that matches the current intake air temperature and the engine oil temperature.
The first two-dimensional chart is constructed according to an actual vehicle experiment, and in the first two-dimensional chart, the unique duty ratio can be determined according to the air inlet temperature and the engine water temperature; similarly, the second two-dimensional map is a map constructed based on an actual vehicle experiment in which a unique duty ratio can be determined based on the intake air temperature and the engine oil temperature.
After the duty ratio is determined from the two-dimensional map described above, the resulting duty ratio may be directly used as a feedforward duty ratio required for feedforward control. In order to further improve the control accuracy of the intercooler water pump, the duty ratio obtained above may be further corrected according to the engine speed and the load, and the corrected duty ratio may be finally used as the feedforward duty ratio.
Optionally, determining the feedforward duty ratio required for 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 air inlet 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 the feedforward duty ratio.
In this alternative embodiment, a specific manner of determining a feedforward duty cycle required for feedforward control according to an intake air temperature in vehicle operation information is provided: as shown in fig. 2c, a first two-dimensional icon may first be searched based on the intake air temperature and the engine water temperature in the vehicle operation information to determine a first duty cycle required for the feed-forward control. Further, according to the engine speed and the load in the vehicle operation information, a third two-dimensional chart is searched, and a first duty ratio correction parameter related to the current engine speed and the load is determined. Finally, multiplying the first duty cycle by the first duty cycle correction parameter to obtain the feedforward duty cycle.
S230, determining an air inlet target temperature according to the engine speed and the load in the vehicle operation information.
In order to calculate the duty ratio required for the proportional-integral control, it is first necessary to determine the intake target temperature based on the engine speed and the load in the vehicle running information. Specifically, the required intake air temperature can be searched as the target intake air temperature according to 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 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, load and the front dew point temperature of a throttle; the front dew point temperature of the throttle is determined by the air inlet temperature, the air inlet humidity in the vehicle running information and the altitude factors in the driving environment information;
and correcting the initial target temperature according to the water temperature of the engine in the vehicle running information to obtain the air inlet target temperature.
In this alternative embodiment, a specific manner of determining the intake target temperature according to the engine speed and the load in the vehicle operation information is provided: as shown in fig. 2d, first, an initial target temperature required for PI control is determined according to an engine speed, a load and a throttle front dew point temperature, and then a first one-dimensional map is searched according to an engine water temperature included in 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 target temperature.
The front dew point temperature of the throttle refers to the temperature at which dew is formed by air in front of the throttle, and is determined by the air inlet temperature, the air inlet humidity and the altitude factors in the running information of the vehicle. Introducing the throttle front dew point temperature can avoid the situation that the intake air temperature determined only from the engine speed and load is lower than the throttle front dew point temperature, forming dew.
The front throttle dew point temperature is obtained as 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 dew point temperature of the throttle, which is related to the air inlet temperature and the air inlet humidity, searching a temperature correction parameter, which is related to the altitude factor, in a second one-dimensional chart, and correcting the initial front dew point temperature of the throttle to obtain the final front dew point temperature of the throttle.
Optionally, determining the initial target temperature required for PI control based on the engine speed, load, and pre-throttle dew point temperature includes:
determining candidate intake air temperature according to the engine speed and load;
in the case where the candidate intake air temperature is lower than the throttle front dew point temperature, the throttle front dew point temperature is taken as the initial target temperature.
In this alternative embodiment, a manner is provided for determining 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, searching a fourth two-dimensional icon according to the engine speed and the load, and determining candidate air inlet temperature related to the current engine speed and the load. Further, in order to avoid the case where dew is formed by the candidate intake air temperature being lower than the dew point temperature, which is determined according to the fourth two-dimensional icon, the front throttle dew point temperature may be taken as the initial target temperature in the case where the candidate intake air temperature is lower than the front throttle dew point temperature.
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. The initial duty cycle is determined from the feed forward duty cycle and the PI duty cycle. Specifically, the feedforward duty cycle and the PI duty cycle may be added to obtain an initial duty cycle.
Optionally, determining the proportional-integral duty ratio required for 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 the integrating portion according to a temperature difference between the intake air temperature and the intake air target temperature;
and integrating the second duty cycle through an integrator to obtain an integrated duty cycle, and determining the proportional-integral duty cycle according to the proportional-duty cycle and the integrated duty cycle.
In this alternative embodiment, a specific manner of determining the proportional-integral duty cycle 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, according to a temperature difference between an intake air temperature and an intake air target temperature, a proportional duty ratio required for proportional control corresponding to the temperature difference is determined by referring to a proportional map, 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 cycle is integrated by an integrator to obtain an integrated duty cycle. And finally, summing the proportional duty cycle and the integral duty cycle to obtain the proportional integral duty cycle.
S250, correcting the initial duty ratio according to the ambient temperature in the driving ambient information and the vehicle speed in the vehicle running information to obtain a target duty ratio for controlling the intercooling circulating water pump, and taking the target duty ratio as a control parameter of the intercooling circulating water pump.
And finally, correcting the initial duty ratio according to the ambient temperature in the driving ambient information and the vehicle speed in the vehicle running information to obtain a target duty ratio for controlling the intercooling circulating water pump, and taking the target duty ratio as a control parameter of the intercooling circulating water pump. Specifically, a sixth two-dimensional chart 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 related to 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 circulating water pump is controlled.
In addition, in order to avoid damage to the intercooler water pump, the calculated duty ratio should be limited within the operable range of the intercooler water pump. For example, the duty cycle of the intercooler 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 circulating water pump according to the control parameters.
According to the technical scheme provided by the embodiment of the invention, the control parameters of the intercooling circulating water pump are determined according to the air inlet temperature, the engine water temperature, the vehicle speed, the engine speed and the load in the vehicle running information and the environmental temperature and the elevation factor in the driving environmental information, so that the control precision of the intercooling circulating water pump is improved.
Example III
Fig. 3 is a schematic structural diagram of an intercooler water pump control device according to a third embodiment of the present invention. As shown in fig. 3, the apparatus includes:
a water pump start module 310 for starting the intercooler water pump in response to triggering an intercooler water pump start condition;
the control parameter determining module 320 is configured to determine a control parameter of the intercooler circulating water pump according to vehicle operation information and driving environment information;
the water pump control module 330 is configured to control the intercooler water pump according to the control parameter.
According to the technical scheme, the intercooling circulating water pump is started in response to the triggering of the starting condition of the intercooling circulating water pump, so that the control parameters of the intercooling circulating water pump are 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 parameters, so that the accurate control of the intercooling circulating water pump can be realized, and compared with the control of the intercooling circulating water pump in a continuous running state, the energy consumption of the water pump can be reduced.
Optionally, the starting condition of the intercooling circulating water pump comprises at least one of the following:
changing the vehicle engine from a flameout state to a starting state;
the vehicle air inlet temperature is greater than a set air inlet temperature threshold;
the torque of the vehicle engine is greater than a set torque threshold;
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 inlet and outlet air temperature fails;
a second temperature sensor for measuring the temperature of the engine fails, the intake air temperature of the manifold is higher than a manifold temperature threshold, and the stepping amount of the accelerator pedal is greater than a set stepping threshold;
in an idle state of the vehicle, the water temperature of the engine is higher than a set water temperature threshold value;
the intercooling circulating water pump maintains a stop state exceeding a set time threshold.
Optionally, the control parameter determining module 320 includes:
a feedforward duty ratio determining unit for determining a feedforward duty ratio required for feedforward control according to an intake air temperature in vehicle operation information;
an intake target temperature determining unit for determining an intake target temperature according to an engine speed and a load in vehicle operation information;
an initial duty ratio determining unit, configured to determine a proportional-integral duty ratio required for proportional-integral PI control according to the intake air temperature and the intake air target temperature, and determine 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 environmental temperature in the driving environmental information and the vehicle speed in the vehicle running information to obtain a target duty ratio for controlling the intercooling circulating water pump, and taking the target duty ratio as a control parameter of the intercooling circulating 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 air inlet 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 the integrating portion according to a temperature difference between the intake air temperature and the intake air target temperature;
and integrating the second duty cycle through an integrator to obtain an integrated duty cycle, and determining the proportional-integral duty cycle according to the proportional-duty cycle and the integrated duty cycle.
Optionally, the intake target temperature determining unit includes:
an initial target temperature determining subunit, configured to determine an initial target temperature required for PI control according to an engine speed, a load, and a pre-throttle dew point temperature; the front dew point temperature of the throttle is determined by the air inlet temperature, the air inlet humidity in the vehicle running information and the altitude factors in the driving environment information;
and the air inlet 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 air inlet 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;
and taking the front throttle dew point temperature as the initial target temperature when the candidate intake air temperature is lower than the front 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 the corresponding functional modules and beneficial effects of the execution method.
Example IV
Fig. 4 shows a schematic diagram of the structure 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. Electronic equipment may also represent various forms of mobile devices, such as personal digital processing, cellular telephones, smartphones, 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, such as a Read Only Memory (ROM) 12, a Random Access Memory (RAM) 13, etc., communicatively connected to the at least one processor 11, in which the memory stores a computer program executable by the at least one processor, and the processor 11 may perform various appropriate actions and processes according to the computer program stored in the Read Only Memory (ROM) 12 or the computer program loaded from the storage unit 18 into the Random Access Memory (RAM) 13. In the RAM 13, various programs and data required for the operation of the electronic device 10 may 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.
Various 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, etc.; 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, digital Signal Processors (DSPs), and any suitable processor, controller, microcontroller, etc. The processor 11 performs the respective methods and processes described above, such as the intercooler-circulating water pump control method.
In some embodiments, the intercooler water pump control method may be implemented as a computer program, which is tangibly embodied on 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 the RAM 13 and executed by the processor 11, one or more steps of the above-described inter-cooling circulating water pump control method may be performed. Alternatively, in other embodiments, the processor 11 may be configured to perform the intercooler 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 can be implemented in digital electronic circuitry, integrated circuit systems, field Programmable Gate Arrays (FPGAs), application Specific Integrated Circuits (ASICs), application Specific Standard Products (ASSPs), systems On 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, the one or more computer programs may be executed and/or interpreted on a programmable system including at least one programmable processor, which may be a special purpose or general-purpose programmable processor, that may receive data and instructions from, and transmit data and instructions to, a storage system, at least one input device, and at least one output device.
A computer program for carrying out 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 implemented. The computer program may execute entirely on the 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. The 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) through 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 may be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user may be received in any form, including acoustic input, speech input, or tactile input.
The systems and techniques described here can be implemented in a computing system that includes a background 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 background, 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. The client and server are typically 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 hosts and VPS service are overcome.
It should be appreciated that various forms of the flows shown above may be used to reorder, add, or delete steps. For example, the steps described in the present invention may be performed in parallel, sequentially, or in a different order, so long as the desired results of the technical solution of the present invention are achieved, and the present invention is not limited herein.
The above embodiments do not limit the scope of the present invention. It will be apparent to those skilled in the art that various modifications, combinations, sub-combinations and alternatives are possible, depending on design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of the present invention.
Claims (6)
1. The control method of the intercooling circulating water pump is characterized by comprising the following steps of:
starting the intercooling circulating water pump in response to triggering the intercooling circulating water pump starting condition;
determining control parameters of the intercooling circulating water pump according to vehicle running information and driving environment information;
controlling the intercooling circulating water pump according to the control parameters;
the determining the control parameters of the intercooling circulating water pump according to the vehicle running information and the driving environment information comprises the following steps:
determining a feedforward duty ratio required by feedforward control according to the air inlet temperature in the vehicle running information;
determining an intake target temperature according to the engine speed and the load in the vehicle operation information;
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;
correcting the initial duty ratio according to the environmental temperature in the driving environmental information and the vehicle speed in the vehicle operation information to obtain a target duty ratio for controlling the intercooling circulating water pump, and taking the target duty ratio as a control parameter of the intercooling circulating water pump;
the determining the feedforward duty ratio required by feedforward control according to the intake air temperature in the vehicle operation information comprises the following steps:
determining a first duty ratio required by feed-forward control according to the air inlet temperature and the engine water temperature in the vehicle operation information;
correcting the first duty ratio according to the engine speed and the load in the vehicle running information to obtain a feedforward duty ratio;
the determining the 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 the integrating portion according to a temperature difference between the intake air temperature and the intake air target temperature;
integrating the second duty cycle through an integrator to obtain an integrated duty cycle, and determining a proportional-integral duty cycle according to the proportional duty cycle and the integrated duty cycle;
the determining the target temperature of air intake according to the engine speed and the load in the vehicle operation information comprises the following steps:
determining an initial target temperature required by PI control according to the rotation speed, load and the front dew point temperature of a throttle; the front dew point temperature of the throttle is determined by the air inlet temperature, the air inlet humidity in the vehicle running information and the altitude factors in the driving environment information;
and correcting the initial target temperature according to the water temperature of the engine in the vehicle running information to obtain the target temperature of air intake.
2. The method of claim 1, wherein the charge air circulating water pump start-up conditions include at least one of:
changing the vehicle engine from a flameout state to a starting state;
the vehicle air inlet temperature is greater than a set air inlet temperature threshold;
the torque of the vehicle engine is greater than a set torque threshold;
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 inlet and outlet air temperature fails;
a second temperature sensor for measuring the temperature of the engine fails, the intake air temperature of the manifold is higher than a manifold temperature threshold, and the stepping amount of the accelerator pedal is greater than a set stepping threshold;
in an idle state of the vehicle, the water temperature of the engine is higher than a set water temperature threshold value;
the intercooling circulating water pump maintains a stop state exceeding a set time threshold.
3. The method of claim 1, wherein determining an initial target temperature required for PI control based on engine speed, load, and pre-throttle dew point temperature comprises:
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 intake air temperature is lower than the front throttle dew point temperature.
4. An intercooling circulating water pump control device for executing the intercooling circulating water pump control method according to any one of claims 1 to 3, characterized by comprising:
the water pump starting module is used for responding to the starting condition of the trigger intercooling circulating water pump and starting the intercooling circulating water pump;
the control parameter determining module is used for determining the control parameters of the intercooling circulating water pump according to the vehicle running information and the driving environment information;
and the water pump control module is used for controlling the intercooling circulating water pump according to the control parameters.
5. An electronic device, the electronic device comprising:
at least one processor; and
a memory communicatively coupled to the at least one processor; wherein,
the memory stores a computer program executable by the at least one processor to enable the at least one processor to perform the intercooler water pump control method of any one of claims 1 to 3.
6. A computer-readable storage medium storing computer instructions for causing a processor to execute the method of controlling the intercooler circulating water pump according to any one of claims 1 to 3.
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