CN115217607A - Cooling control method, cooling control device, electronic apparatus, and readable medium - Google Patents
Cooling control method, cooling control device, electronic apparatus, and readable medium Download PDFInfo
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- CN115217607A CN115217607A CN202210113455.9A CN202210113455A CN115217607A CN 115217607 A CN115217607 A CN 115217607A CN 202210113455 A CN202210113455 A CN 202210113455A CN 115217607 A CN115217607 A CN 115217607A
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- 238000001816 cooling Methods 0.000 title claims abstract description 86
- 238000000034 method Methods 0.000 title claims abstract description 46
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 128
- 239000000110 cooling liquid Substances 0.000 claims abstract description 31
- 239000002826 coolant Substances 0.000 claims description 27
- 230000008859 change Effects 0.000 claims description 17
- 238000004590 computer program Methods 0.000 claims description 10
- 238000012544 monitoring process Methods 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 4
- 230000007704 transition Effects 0.000 claims description 4
- 230000003213 activating effect Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 11
- 230000006870 function Effects 0.000 description 7
- 230000008569 process Effects 0.000 description 6
- 238000004891 communication Methods 0.000 description 4
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- 238000012545 processing Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 230000000644 propagated effect Effects 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000010801 machine learning Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 239000013307 optical fiber Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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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
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P3/00—Liquid cooling
- F01P3/20—Cooling circuits not specific to a single part of engine or machine
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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
- F02B39/00—Component parts, details, or accessories relating to, driven charging or scavenging pumps, not provided for in groups F02B33/00 - F02B37/00
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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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Abstract
The application provides a cooling control method, a cooling control device, an electronic device and a readable medium. The method is applied to a cooling system, the cooling system comprises an engine, a turbocharger, a first water pump and a second water pump, the first water pump is connected with the engine and the turbocharger, the second water pump is connected with the turbocharger, the first water pump is driven to convey cooling liquid to the engine and the turbocharger when the engine is in a working state, and the method comprises the following steps: when the engine is switched from a working state to a stop state, acquiring temperature information of the engine; and starting a second water pump to deliver cooling liquid to the turbocharger according to the temperature information. The method can start the second water pump to cool the turbocharger when the engine stops and the first water pump stops working, so that the turbocharger is prevented from being damaged by overhigh residual temperature to influence the service life.
Description
Technical Field
The present disclosure relates to the field of engine technologies, and in particular, to a cooling control method and apparatus, an electronic device, and a readable medium.
Background
The cooling system scheme used by the engine is generally a mechanical water pump circulating cooling mode, the mechanical water pump drives water to circulate, heat generated in the working process of the engine is taken out by water flow, and the heat enters a radiator through the water flow to be radiated.
In the related art, for an engine with a turbocharger, a turbocharger cooling cycle is generally communicated with a main cycle of the engine as a branch of the main cycle, and the cooling cycle thereof is controlled by a main cooling cycle.
However, in the above scheme, after the engine is stopped, the cooling cycle of the turbocharger branch is also stopped, and the turbocharger is damaged due to the stop of the cooling cycle when the temperature of the turbocharger is relatively high, so that the service life is shortened.
Disclosure of Invention
In view of the above technical problems, the present application provides a cooling control method, apparatus, electronic device and readable medium to prevent the turbocharger from being damaged by excessive residual temperature and affecting the service life.
Other features and advantages of the present application will be apparent from the following detailed description, or may be learned by practice of the application.
According to an aspect of an embodiment of the present application, there is provided a cooling control method applied to a cooling system including an engine, a turbocharger, a first water pump connected to the engine and the turbocharger, and a second water pump connected to the turbocharger, the first water pump being driven to supply coolant to the engine and the turbocharger when the engine is in an operating state, the method including:
when the engine is switched from a working state to a stop state, acquiring temperature information of the engine;
and starting the second water pump to convey cooling liquid to the turbocharger according to the temperature information.
In some embodiments of the present application, based on the above technical solutions, the temperature information includes a coolant temperature and a drain temperature; the starting the second water pump to deliver the cooling liquid to the turbocharger according to the temperature information comprises the following steps:
and if the temperature of the cooling liquid is higher than a cooling temperature threshold value or the temperature of the exhaust liquid is higher than a temperature exhaust threshold value, starting the second water pump to convey the cooling liquid to the turbocharger.
In some embodiments of the present application, based on the above technical solution, the starting the second water pump to deliver the coolant to the turbocharger includes:
determining the cooling working time length according to the cooling liquid temperature and the exhaust temperature;
and controlling the second water pump to convey cooling liquid to the turbocharger according to the cooling working time.
In some embodiments of the present application, based on the above technical solution, the acquiring temperature information of the engine when the engine is switched from an operating state to a stop state includes:
determining that the engine is switched from a working state to a stopping state according to the rotating speed information of the engine;
and acquiring the average exhaust temperature and the coolant temperature of the engine in a preset time period as temperature information of the engine.
In some embodiments of the present application, based on the above technical solution, the determining that the engine is switched from the operating state to the stop state according to the rotational speed information of the engine includes:
monitoring a rate of change of speed of the engine;
and if the rotating speed change rates of the engine are smaller than the change rate threshold value in the preset time period, determining that the engine is converted into a stop state.
In some embodiments of the present application, based on the above technical solution, the determining that the engine is switched from the operating state to the stop state according to the rotational speed information of the engine includes:
monitoring rotational speed information of the engine;
and if the rotating speed information of the engine is detected to be zero at any time, determining that the engine is converted into a stop state.
In some embodiments of the present application, based on the above technical solution, after the starting of the second water pump to deliver the coolant to the turbocharger according to the temperature information, the method further includes:
detecting a temperature of the turbocharger;
and if the temperature of the turbocharger is lower than a temperature threshold value, stopping the second water pump.
According to an aspect of an embodiment of the present application, there is provided a cooling control apparatus applied to a cooling system including an engine, a turbocharger, a first water pump connected to the engine and the turbocharger, and a second water pump connected to the turbocharger, the first water pump being driven to deliver coolant to the engine and the turbocharger when the engine is in an operating state, the cooling control apparatus including:
the temperature acquisition module is used for acquiring temperature information of the engine when the engine is switched from a working state to a stop state;
and the water pump starting module is used for starting the second water pump to convey cooling liquid to the turbocharger according to the temperature information.
According to an aspect of an embodiment of the present application, there is provided an electronic apparatus including: a processor; and a memory for storing executable instructions for the processor; wherein the processor is configured to execute the cooling control method as in the above solution via execution of executable instructions.
According to an aspect of the embodiments of the present application, there is provided a computer-readable storage medium on which a computer program is stored, the computer program, when executed by a processor, implementing a cooling control method as in the above technical solution.
In the embodiment of the application, when the engine is switched from the working state to the stop state, the temperature information of the engine is obtained, and then the second water pump is started to deliver the cooling liquid to the turbocharger according to the temperature information. Through the mode, when the engine is stopped and the first water pump stops working, the second water pump is started to cool the turbocharger, and therefore the turbocharger is prevented from being damaged by overhigh residual temperature and influencing the service life.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application. It is obvious that the drawings in the following description are only some embodiments of the application, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
In the drawings:
FIG. 1 schematically illustrates an exemplary system architecture diagram of the present application in one application scenario;
FIG. 2 is a schematic flow chart of a cooling control method in an embodiment of the present application;
FIG. 3 is an exemplary flowchart of a cooling control scheme for an onboard transmitter in an embodiment of the present application;
FIG. 4 is a block diagram schematically showing the composition of a cooling control apparatus in the embodiment of the present application;
FIG. 5 illustrates a schematic structural diagram of a computer system suitable for use to implement the electronic device of the embodiments of the subject application.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art.
Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the application. One skilled in the relevant art will recognize, however, that the subject matter of the present application can be practiced without one or more of the specific details, or with other methods, components, devices, steps, and so forth. In other instances, well-known methods, devices, implementations, or operations have not been shown or described in detail to avoid obscuring aspects of the application.
The block diagrams shown in the figures are functional entities only and do not necessarily correspond to physically separate entities. I.e. these functional entities may be implemented in the form of software, or in one or more hardware modules or integrated circuits, or in different networks and/or processor means and/or microcontroller means.
The flow charts shown in the drawings are merely illustrative and do not necessarily include all of the contents and operations/steps, nor do they necessarily have to be performed in the order described. For example, some operations/steps may be decomposed, and some operations/steps may be combined or partially combined, so that the actual execution sequence may be changed according to the actual situation.
The solution of the present application may be applied in cooling circulation systems, and in particular in engines with turbochargers. The engine may be an on-board engine, a marine engine, or other suitable type of engine. In this kind of engine, through the scheme of this application, under the condition that the sender normally worked, drive mechanical water pump through the engine and drive whole cooling system, cool off the heat dissipation for engine and turbo charger, and when the engine stopped, drive turbo charger's cooling branch road through the electronic water pump, cool off the heat dissipation for turbo charger to can reach and avoid the turbo charger overheated and reduce life's the condition after the engine stopped situation.
Fig. 1 schematically shows an exemplary system architecture diagram of the present technical solution in an application scenario. As shown in fig. 1, the system architecture includes an engine 110, a mechanical water pump 120, a radiator 130, an expansion tank 140, an electric water pump 150, and a turbocharger 160. The specific implementation employed for each element may depend on the actual application scenario of the engine. In one embodiment, the cooling cycle adopts a water cooling system, the engine is an internal combustion engine, the mechanical water pump is a belt pulley driven centrifugal pump, the radiator is a water-air heat exchange type radiator, the expansion water tank is a plastic water tank with a pressure relief air release valve cover, the electronic water pump is a motor driven centrifugal pump, and the turbocharger is a water-cooled exhaust gas turbocharger. As shown in fig. 1, the cooling cycle of the turbocharger 160 is a branch of the cooling cycle of the engine, the electronic water pump 150 is connected in series in the branch between the engine 110 and the turbocharger 160, and the turbocharger 160 flows water back to the mechanical water pump 120. The mechanical water pump 120, the engine 110 and the radiator 130 form a series circuit structure, the water circulation flow is driven by the mechanical water pump 2, and the cooling water flows through the engine 110 and the turbocharger 160 to cool the engine 110 and the turbocharger 160. The turbocharger 160 and the air overflow line of the engine 110 are collected and flow into the expansion tank 140, the steam is blown out through the air valve in the expansion tank 140, and the cooling water left after cooling flows back to the mechanical water pump 120 through the line.
The technical solutions provided in the present application are described in detail below with reference to specific embodiments. Referring to fig. 2, fig. 2 is a schematic flow chart of a cooling control method according to an embodiment of the present application, which can be applied to the exemplary system architecture described above. Specifically, taking a cooling system of a vehicle as an example, the solution of the present application may be specifically executed by an on-board management system of the vehicle, where the cooling system includes an engine, a turbocharger, a first water pump and a second water pump, the first water pump is connected to the engine and the turbocharger, the second water pump is connected to the turbocharger, and the engine drives the first water pump to deliver coolant to the engine and the turbocharger when in an operating state, and an embodiment of a cooling control method in the embodiment of the present application includes:
and step S210, acquiring the temperature information of the engine when the engine is switched from the working state to the stop state.
Specifically, the first water pump is a mechanical water pump and the second water pump is an electronic water pump. The mechanical water pump is driven by the engine, and is started with the start of the engine and also stopped with the stop of the engine. The electronic water pump may be driven by a battery and may operate independently after the engine is shut down. The vehicle management system acquires temperature information of the engine when the engine is switched from an operating state to a stop state. Specifically, the operating state of the engine refers to a state after the engine starts from being triggered to stop. The engine is stopped at the time between the engine being triggered to stop and the speed being completely zeroed. The cooling control device acquires temperature information of the engine when it is determined that the engine is shifted from an operating state to a stop state.
In one embodiment, the engine control system EMS may initiate a self-test at or after vehicle start-up. The self-checking object comprises sensors and actuators of various subsystems in the engine. If the actuator finds a fault in the self-checking process, the follow-up control cannot be normally carried out, and therefore the engine cannot enter a normal working state, the EMS can carry out fault alarm, carry out torque limiting protection on the engine, and prohibit the engine from reaching higher power under an unexpected state to bring more serious mechanical damage.
And step S220, starting the second water pump to convey cooling liquid to the turbocharger according to the temperature information.
The cooling control device judges whether the turbocharger needs to be cooled according to the temperature information of the engine, and starts the second water pump to convey cooling liquid to the turbocharger if the turbocharger needs to be cooled. In the cooling system of a vehicle, the coolant is typically water. When the engine is in a normal working state, if the engine speed is higher than the idling speed of the engine, the turbocharger is cooled by the cooling flow in the cooling branch of the turbocharger driven by the first water pump, namely the mechanical water pump, so as to meet the reliable working requirement of the turbocharger. When the first water pump works, the second water pump, namely the electronic water pump, can freely rotate along with the water flow, and the electronic water pump is in a power-on but non-working state, so that the electric energy consumption is reduced to the maximum extent.
In the embodiment of the application, when the engine is switched from the working state to the stop state, the temperature information of the engine is obtained, and then the second water pump is started to deliver the cooling liquid to the turbocharger according to the temperature information. Through the mode, when the engine is stopped and the first water pump stops working, the second water pump is started to cool the turbocharger, and therefore the turbocharger is prevented from being damaged by overhigh residual temperature and influencing the service life.
In some embodiments of the present application, on the basis of the above embodiments, the temperature information includes a coolant temperature and a discharge temperature; the step s220 of starting the second water pump to deliver the coolant to the turbocharger according to the temperature information may include the following steps:
and if the temperature of the cooling liquid is higher than a cooling temperature threshold value or the temperature of the exhaust liquid is higher than a temperature exhaust threshold value, starting the second water pump to convey the cooling liquid to the turbocharger.
Specifically, when the engine is in a stop state or a stall state, it is necessary to determine whether the engine is in a hot state or a cold state, the hot state and the cold state of the thermal engine mainly depend on the temperature of the engine, the hot state of the engine indicates that the temperature of the engine is high, and a cooling process after the stall needs to be performed, while the cold state of the engine indicates that the temperature of the transmitter is low, and the engine or the turbocharger cannot be damaged, so that the cooling process after the stall does not need to be performed. Specifically, the cooling control device compares the temperature of the cooling liquid measured by a water temperature sensor in the engine main circulation cooling system with a cooling temperature threshold value, compares the exhaust temperature recorded by the EMS with an exhaust temperature threshold value, and starts the second water pump to convey the cooling liquid to the turbocharger if the temperature of the cooling liquid is higher than the cooling temperature threshold value or the exhaust temperature is higher than the exhaust temperature threshold value. The exhaust temperature may be determined based on an average of the exhaust temperatures over a period of time prior to the flameout.
In some embodiments of the present application, based on the above embodiments, the step of activating the second water pump to deliver the coolant to the turbocharger may include the steps of:
determining the cooling working time length according to the cooling liquid temperature and the exhaust temperature;
and controlling the second water pump to convey cooling liquid to the turbocharger according to the cooling working time.
Specifically, the time required for cooling may vary depending on the temperature of the engine. Specifically, the coolant temperature and the exhaust temperature may be in a predetermined correspondence relationship with the cooling operation period, for example, in the form of a table or a function, and stored in an on-vehicle memory, and the operation period may be determined by directly performing table lookup or calculation by an input formula based on the coolant temperature and the exhaust temperature at the time of calculation. In one embodiment, the corresponding cooling operation time period may be determined by a machine learning model. After the operating time period is determined, the cooling control device controls the second water pump to deliver the coolant to the turbocharger according to the cooling operating time period. Generally, the cooling operation time period of the second water pump does not generally exceed the post-operation allowable time period, and when the second water pump is operated for a set cooling operation time period or after the turbocharger no longer needs to be cooled, the second water pump stops operating.
In some embodiments of the present application, based on the above embodiments, the step S210, obtaining the temperature information of the engine when the engine is switched from the operating state to the stop state, may include the following steps:
determining that the engine is switched from a working state to a stopping state according to the rotating speed information of the engine;
and acquiring the average exhaust temperature and the coolant temperature of the engine in a preset time period as the temperature information of the engine.
Specifically, according to the rotation speed of the engine, a trend of change in the operating state of the engine can be determined, and thus the transition of the engine state is determined according to the trend of change. When the number of revolutions of the engine reaches or exceeds the number of idling revolutions of the engine, it may be determined that the engine has entered a normal operating state. Thereafter, if the number of engine revolutions continues to decrease and the rate of decrease of the number of revolutions is higher than a predetermined threshold, it may be determined that the engine is stalling. Or if the number of engine revolutions returns to zero, it indicates that the engine has stalled. After determining the transition to the stop state, the cooling control means may acquire, as the temperature information of the engine, an average exhaust temperature of the engine over a preset time period and a coolant temperature. It is understood that the temperature information of the engine may also include other information, such as ambient temperature, temperature variation curve, etc., and is not limited herein.
In an embodiment of the application, based on the above embodiment, the step of determining that the engine is switched from the operating state to the stop state according to the information of the rotation speed of the engine may include the steps of: monitoring a rate of change of speed of the engine; and if the rotating speed change rates of the engine are smaller than the change rate threshold value in the preset time period, determining that the engine is converted into a stop state. At the moment, the EMS continuously observes the variation trend of the engine speed at a fixed frequency, if the speed at the time t1 is N _ speed1, and the speed at the time t2 is N _ speed2, the change rate k = (N _ speed2-N _ speed 1)/(t 2-t 1) is set, and the monitoring is continuously carried out for three times, if the change rates k are all less than 0 in the three times of monitoring, the engine speed is considered to be continuously reduced, and the engine is ready to be stopped.
In an embodiment of the application, based on the above embodiment, the step of determining that the engine is shifted from the operating state to the stop state according to the rotation speed information of the engine may include the steps of: monitoring rotational speed information of the engine; and if the rotating speed information of the engine is detected to be zero at any time, determining that the engine is converted into a stop state. Specifically, when the engine management system EMS monitors that the number of engine revolutions N _ speed has become equal to 0, the shutdown is considered complete.
In an embodiment of the application, on the basis of the above embodiment, after the second water pump is started to deliver the coolant to the turbocharger according to the temperature information, the method further includes the following steps: detecting a temperature of the turbocharger; and if the temperature of the turbocharger is lower than a temperature threshold value, stopping the second water pump.
An embodiment in which the aspect of the present application is applied to a cooling system of a vehicle transmitter is described in detail below. Referring to fig. 3, fig. 3 is an exemplary flow of a cooling control scheme of an on-board transmitter according to an embodiment of the present application. As shown in fig. 3, N _ speed is an engine speed, N _ idle is an engine idle speed, T _ clt is an engine water temperature, T _ afterwater is an engine water temperature operation threshold, T _ av is an average exhaust temperature value, T _ ex is an exhaust temperature threshold, ewp _ aftertime is an electronic water pump operation duration, and Time _ r is a set threshold for the electronic water pump operation duration. Specifically, after the entire vehicle is powered on, in step 310, the engine control system EMS starts to perform self-checking to determine whether the system has a fault. If a fault is found to exist, the engine is torque limited protected in step 320. If there is no fault, then in step 330, the engine speed N _ speed is compared to the engine idle speed N _ idle. If the engine speed N _ speed is higher than the engine idle speed N _ idle, then the turbocharger is cooled by the mechanical water pump drive water flow of the engine main cycle in step 340. At this time, in step 350, the electronic water pump is in a power-on non-operating state, and the electronic water pump can rotate freely along with the water flow. If the engine speed N _ speed is less than the engine idle speed N _ idle, then proceed to step 360 and compare the engine water temperature T _ clt to the water temperature post-operation threshold T _ afterrun. If the engine water temperature T _ clt is less than the post-water temperature operating threshold T _ afterrun, then the method proceeds to step 370, where the exhaust temperature average T _ av is compared to the exhaust temperature threshold T _ ex. If the average exhaust temperature value T _ av is smaller than the exhaust temperature threshold value T _ ex, it indicates that cooling is not required, and step 350 is performed to place the electronic water pump in a power-on non-operating state. If the engine water temperature T _ clt is greater than the water temperature post-operation threshold T _ afterrun in step 360 or the exhaust temperature average T _ av is greater than the exhaust temperature threshold T _ ex in step 370, the electronic water pump is driven to operate to cool the turbocharger in step 380. Finally, in step 390, the working duration ewp _ aftertime is compared with the set threshold Time _ r. If the working Time ewp _ aftertime is greater than the set threshold value Time _ r, the method goes to step 350, and the electronic water pump is stopped and enters a non-working state.
It should be noted that although the various steps of the methods in this application are depicted in the drawings in a particular order, this does not require or imply that these steps must be performed in this particular order, or that all of the shown steps must be performed, to achieve desirable results. Additionally or alternatively, certain steps may be omitted, multiple steps combined into one step execution, and/or one step broken down into multiple step executions, etc.
The following describes an implementation of the apparatus of the present application, which can be used to implement the cooling control method of the above-described embodiments of the present application. Fig. 4 schematically shows a block diagram of the components of the cooling control apparatus in the embodiment of the present application. As shown in fig. 4, the cooling control device 400 is applied to a cooling system including an engine, a turbocharger, a first water pump connected to the engine and the turbocharger, and a second water pump connected to the turbocharger, the first water pump being driven to supply coolant to the engine and the turbocharger when the engine is in an operating state, and the cooling control device 400 may mainly include:
the temperature acquisition module 410 is used for acquiring temperature information of the engine when the engine is switched from an operating state to a stop state;
and the water pump starting module 420 is configured to start the second water pump to deliver the coolant to the turbocharger according to the temperature information.
In some embodiments of the present application, on the basis of the above embodiments, the temperature information includes a coolant temperature and a discharge temperature; the water pump activation module 420 includes:
and the second water pump starting unit is used for starting the second water pump to convey the cooling liquid to the turbocharger if the temperature of the cooling liquid is higher than a cooling temperature threshold value or the temperature of the exhaust liquid is higher than a temperature exhaust threshold value.
In some embodiments of the present application, on the basis of the above embodiments, the second water pump starting unit includes:
the time length determining subunit is used for determining the cooling working time length according to the cooling liquid temperature and the exhaust temperature;
and the control subunit is used for controlling the second water pump to convey the cooling liquid to the turbocharger according to the cooling working time.
In some embodiments of the present application, based on the above embodiments, the temperature obtaining module 410 includes:
the state determining unit is used for determining that the engine is switched from a working state to a stop state according to the rotating speed information of the engine;
and the temperature acquisition unit is used for acquiring the average exhaust temperature and the coolant temperature of the engine in a preset time period as the temperature information of the engine.
In some embodiments of the present application, on the basis of the above embodiments, the state determination unit includes:
a change rate detection subunit for monitoring a rate of change of a rotation speed of the engine;
the first state determining subunit is used for determining that the engine is converted into a stop state if the rotating speed change rates of the engine are all smaller than the change rate threshold value in a preset time period.
In some embodiments of the present application, on the basis of the above embodiments, the state determination unit includes:
the rotating speed detection subunit is used for monitoring rotating speed information of the engine;
and the second state determining subunit is used for determining that the engine is converted into a stop state if the rotation speed information of the engine is detected to be zero at any time.
In some embodiments of the present application, on the basis of the above embodiments, the cooling control apparatus 400 further includes:
the temperature detection module is used for detecting the temperature of the turbocharger;
and the water pump stopping module is used for stopping the second water pump if the temperature of the turbocharger is lower than a temperature threshold value.
It should be noted that the apparatus provided in the foregoing embodiment and the method provided in the foregoing embodiment belong to the same concept, and the specific manner in which each module performs operations has been described in detail in the method embodiment, and is not described again here.
FIG. 5 illustrates a schematic structural diagram of a computer system suitable for use in implementing the electronic device of an embodiment of the present application.
It should be noted that the computer system 500 of the electronic device shown in fig. 5 is only an example, and should not bring any limitation to the functions and the scope of use of the embodiments of the present application.
As shown in fig. 5, the computer system 500 includes a Central Processing Unit (CPU) 501, which can perform various appropriate actions and processes according to a program stored in a Read-Only Memory (ROM) 502 or a program loaded from a storage section 508 into a Random Access Memory (RAM) 503. In the RAM 503, various programs and data necessary for system operation are also stored. The CPU 501, ROM 502, and RAM 503 are connected to each other through a bus 504. An Input/Output (I/O) interface 505 is also coupled to bus 504.
The following components are connected to the I/O interface 505: an input portion 506 including a keyboard, a mouse, and the like; an output section 507 including a Cathode Ray Tube (CRT), a Liquid Crystal Display (LCD), and the like, a speaker, and the like; a storage portion 508 including a hard disk and the like; and a communication section 509 including a Network interface card such as a LAN (Local Area Network) card, a modem, or the like. The communication section 509 performs communication processing via a network such as the internet. A drive 510 is also coupled to the I/O interface 505 as needed. A removable medium 511 such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, or the like is mounted on the drive 510 as necessary, so that a computer program read out therefrom is mounted into the storage section 508 as necessary.
In particular, according to embodiments of the present application, the processes described in the various method flowcharts may be implemented as computer software programs. For example, embodiments of the present application include a computer program product comprising a computer program embodied on a computer-readable medium, the computer program comprising program code for performing the method illustrated by the flow chart. In such an embodiment, the computer program may be downloaded and installed from a network through the communication section 509, and/or installed from the removable medium 511. The computer program executes various functions defined in the system of the present application when executed by a Central Processing Unit (CPU) 501.
It should be noted that the computer readable medium shown in the embodiments of the present application may be a computer readable signal medium or a computer readable storage medium or any combination of the two. A computer readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples of the computer readable storage medium may include, but are not limited to: an electrical connection having 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), a 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. In the context of this application, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device. In this application, however, a computer readable signal medium may include a propagated data signal with computer readable program code embodied therein, for example, in baseband or as part of a carrier wave. Such a propagated data signal may take many forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A computer readable signal medium may be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device. Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to: wireless, wired, etc., or any suitable combination of the foregoing.
The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present application. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams or flowchart illustration, and combinations of blocks in the block diagrams or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
It should be noted that although in the above detailed description several modules or units of the device for action execution are mentioned, such a division is not mandatory. Indeed, the features and functionality of two or more modules or units described above may be embodied in one module or unit, according to embodiments of the application. Conversely, the features and functions of one module or unit described above may be further divided into embodiments by a plurality of modules or units.
Through the above description of the embodiments, those skilled in the art will readily understand that the exemplary embodiments described herein may be implemented by software, or by software in combination with necessary hardware. Therefore, the technical solution according to the embodiments of the present application may be embodied in the form of a software product, which may be stored in a non-volatile storage medium (which may be a CD-ROM, a usb disk, a removable hard disk, etc.) or on a network, and includes several instructions to enable a computing device (which may be a personal computer, a server, a touch terminal, or a network device, etc.) to execute the method according to the embodiments of the present application.
Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains.
It will be understood that the present application is not limited to the precise arrangements that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the application is limited only by the appended claims.
Claims (10)
1. A cooling control method applied to a cooling system including an engine, a turbocharger, a first water pump connected to the engine and the turbocharger, and a second water pump connected to the turbocharger, the first water pump being driven to supply coolant to the engine and the turbocharger when the engine is in an operating state, the method comprising:
acquiring temperature information of the engine when the engine is switched from a working state to a stop state;
and starting the second water pump to convey cooling liquid to the turbocharger according to the temperature information.
2. The method of claim 1, wherein the temperature information includes a coolant temperature and a drain temperature; the starting the second water pump to deliver the cooling liquid to the turbocharger according to the temperature information comprises the following steps:
and if the temperature of the cooling liquid is higher than a cooling temperature threshold value or the temperature of the exhaust liquid is higher than a temperature exhaust threshold value, starting the second water pump to convey the cooling liquid to the turbocharger.
3. The method of claim 2, wherein said activating the second water pump to deliver coolant to the turbocharger comprises:
determining the cooling working time length according to the cooling liquid temperature and the exhaust temperature;
and controlling the second water pump to convey cooling liquid to the turbocharger according to the cooling working time.
4. The method of claim 1, wherein said obtaining temperature information of the engine when the engine transitions from an operating state to a shutdown state comprises:
determining that the engine is switched from a working state to a stopping state according to the rotating speed information of the engine;
and acquiring the average exhaust temperature and the coolant temperature of the engine in a preset time period as temperature information of the engine.
5. The method of claim 4, wherein determining that the engine transitions from an operating state to a stopped state based on the engine speed information comprises:
monitoring a rate of change of speed of the engine;
and if the rotating speed change rates of the engine are smaller than the change rate threshold value in the preset time period, determining that the engine is converted into a stop state.
6. The method of claim 4, wherein determining that the engine is transitioning from an operating state to a shutdown state based on the engine speed information comprises:
monitoring rotational speed information of the engine;
and if the rotating speed information of the engine is detected to be zero at any time, determining that the engine is converted into a stop state.
7. The method according to any one of claims 1-6, wherein after the activating the second water pump to deliver coolant to the turbocharger according to the temperature information, the method further comprises:
detecting a temperature of the turbocharger;
and if the temperature of the turbocharger is lower than a temperature threshold value, stopping the second water pump.
8. A cooling control apparatus applied to a cooling system including an engine, a turbocharger, a first water pump connected to the engine and the turbocharger, and a second water pump connected to the turbocharger, the first water pump being driven to deliver coolant to the engine and the turbocharger when the engine is in an operating state, the cooling control apparatus comprising:
the temperature acquisition module is used for acquiring temperature information of the engine when the engine is switched from a working state to a stop state;
and the water pump starting module is used for starting the second water pump to convey cooling liquid to the turbocharger according to the temperature information.
9. An electronic device, comprising:
a processor;
a memory for storing executable instructions of the processor;
wherein the processor is configured to perform the cooling control method of any one of claims 1 to 7 via execution of the executable instructions.
10. A computer-readable medium, on which a computer program is stored, which, when being executed by a processor, carries out a cooling control method according to any one of claims 1 to 7.
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| CN202210113455.9A CN115217607B (en) | 2022-01-29 | 2022-01-29 | Cooling control method, cooling control device, electronic equipment and readable medium |
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