CN115370458B - Engine cooling system, method, vehicle control system, vehicle and storage medium - Google Patents
Engine cooling system, method, vehicle control system, vehicle and storage medium Download PDFInfo
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- CN115370458B CN115370458B CN202110542677.8A CN202110542677A CN115370458B CN 115370458 B CN115370458 B CN 115370458B CN 202110542677 A CN202110542677 A CN 202110542677A CN 115370458 B CN115370458 B CN 115370458B
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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
- F01P3/02—Arrangements for cooling cylinders or cylinder heads
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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
- F01P7/00—Controlling of coolant flow
- F01P7/14—Controlling of coolant flow the coolant being liquid
- F01P7/16—Controlling of coolant flow the coolant being liquid by thermostatic control
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02G—HOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS; USE OF WASTE HEAT OF COMBUSTION ENGINES; NOT OTHERWISE PROVIDED FOR
- F02G5/00—Profiting from waste heat of combustion engines, not otherwise provided for
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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
- F01P3/02—Arrangements for cooling cylinders or cylinder heads
- F01P2003/027—Cooling cylinders and cylinder heads in parallel
-
- 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
- F01P2007/146—Controlling of coolant flow the coolant being liquid using valves
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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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
Abstract
An engine cooling system, an engine cooling method, a vehicle control system, a vehicle and a storage medium, wherein the engine cooling system comprises a water tank and a radiator, and a stepless water pump, a cylinder cover, a cylinder body and a flow adjustable device are arranged between the water tank and the radiator; the water inlet pipe of the cylinder cover and the water inlet pipe of the cylinder body are connected with the water outlet pipe of the electrodeless water pump, and the water outlet pipe of the cylinder cover and the water outlet pipe of the cylinder body are connected in parallel to the flow adjustable device; the water outlet pipe of the cylinder cover is provided with a first cylinder cover water outlet pipe and a second cylinder cover water outlet pipe which are connected in parallel with the water outlet pipe of the cylinder body, an organic oil cooler is arranged on the first cylinder cover water outlet pipe, and the tail ends of the first cylinder cover water outlet pipe and the second cylinder cover water outlet pipe are both connected with a flow adjustable device. According to the application, the cooling waterways of the cylinder body and the cylinder cover are controlled in parallel, the flow adjustable device respectively controls the on-off of each pipeline according to the whole machine strategy, so that the purposes of quick warm-up, improvement of the heat efficiency of the whole machine, reduction of oil consumption and finally energy conservation and emission reduction are achieved.
Description
Technical Field
The present disclosure relates to the field of engine technology, and in particular, to an engine cooling system, an engine cooling method, a vehicle control system, a vehicle, and a storage medium.
Background
At present, more engine cooling systems on the market adopt a cylinder body and cylinder cover serial waterway, but the demands of the cylinder body and the cylinder cover on the cooling system in the process of warming up are different in the interior of the engine. In order to facilitate combustion of the fuel in the cylinder, the cylinder needs a relatively high temperature, but the exhaust system is concentrated on the cylinder head, so the cylinder head needs a relatively low temperature during the whole warming-up process to ensure reliability.
In addition, the thermostat in the engine cooling system is used for adjusting the circulation conditions of different open circuits for wax packages, the reaction is slower, and the mechanical water pump in the prior art can not realize stepless adjustment by depending on the output rotating speed of the engine crankshaft. The warm air loop at the rear end of the water pump is connected, and the heat exchange efficiency is low by utilizing the low engine water temperature passing through the radiator. The engine oil cooler loop at the rear end of the water pump is connected, and in the warming-up stage, the engine oil needs to be heated by using the cooling liquid cooled by the external circulation pipeline, so that the heat exchange efficiency is reduced, the warming-up rate is further influenced, and meanwhile, the emission is influenced; after the warm-up is finished, the temperature of the cooling liquid passing through the radiator is relatively low, so that the temperature of engine oil after heat exchange is relatively low, the viscosity of the engine oil is relatively high, the friction work proportion of the engine is improved, and the oil consumption of the engine is improved.
The foregoing description is provided for general background information and does not necessarily constitute prior art.
Disclosure of Invention
The application provides an engine cooling system, an engine cooling method, a vehicle control system, a vehicle and a storage medium, which are used for reducing oil consumption and realizing energy conservation and emission reduction. The application aims at cooling the cylinder cover of the cylinder body as required, improving the heating efficiency of warm air, and ensuring that engine oil works at a higher temperature.
The first preferred embodiment of the application firstly provides an engine cooling system which comprises a water tank and a radiator, wherein an electrodeless water pump, a cylinder cover, a cylinder body and a flow adjustable device are arranged between the water tank and the radiator; the water inlet pipe of the cylinder cover and the water inlet pipe of the cylinder body are connected in parallel and are connected with the water outlet pipe of the electrodeless water pump, and the water outlet pipe of the cylinder cover and the water outlet pipe of the cylinder body are connected in parallel to the flow adjustable device; the water outlet pipe of the cylinder cover is provided with a first cylinder cover water outlet pipe and a second cylinder cover water outlet pipe which are connected in parallel with the water outlet pipe of the cylinder body, an organic oil cooler is arranged on the first cylinder cover water outlet pipe, and the tail ends of the first cylinder cover water outlet pipe and the second cylinder cover water outlet pipe are both connected with a flow adjustable device.
Further, in the second preferred embodiment of the present application, the water outlet pipe of the cylinder cover includes a third cylinder cover water outlet pipe connected in parallel with the water outlet pipe of the first cylinder cover, the warm air is provided on the third cylinder cover water outlet pipe, the starting ends of the third cylinder cover water outlet pipe and the second cylinder cover water outlet pipe share the same section of pipeline, and the tail ends are connected to the flow adjustable device.
Further, in a third preferred embodiment of the present application, the flow rate adjusting device has a first water outlet pipe and a second water outlet pipe, the first water outlet pipe is provided with a small circulation path, the second water outlet pipe is provided with a radiator, and the ends of the first water outlet pipe and the second water outlet pipe share the same pipeline and are connected to the electrodeless water pump.
Further, in a fourth preferred embodiment of the present application, the flow rate adjusting device further has a first water inlet pipe, a second water inlet pipe, and a third water inlet pipe; the water outlet pipe of the first cylinder cover is connected with the first water inlet pipe, the water outlet pipe of the second cylinder cover is connected with the second water inlet pipe, and the water outlet pipe of the cylinder body is connected with the third water inlet pipe; the warm air is provided with a warm air inlet pipe, a first valve is arranged on the warm air inlet pipe, a second valve is arranged on the third inlet pipe, a third valve is arranged on the first water outlet pipe, and a fourth valve is arranged on the second water outlet pipe; when the stepless water pump adopts different rotating speeds to provide flow for the engine cooling system as required, the flow adjustable device controls the on-off and flow of each branch through the first valve, the second valve, the third valve and the fourth valve.
The present application further provides a vehicle having any of the engine cooling systems described above.
The application further provides an engine cooling method for any one of the engine cooling systems, comprising the steps of: when the water temperature of the engine is lower than a warm-up threshold T1, closing a first valve between the engine and warm air, and when the water temperature of the engine is higher than the warm-up threshold T1 and warm-up is required, gradually opening the first valve; when the temperature of the water of the engine rises to a warming threshold value T1 and is smaller than a second preset temperature T2, and when warm air is required, a first valve between the engine and the warm air device is gradually opened; when the water temperature of the engine is higher than the second preset temperature T2, opening a fourth valve, and if the warm air demand still exists, opening the first valve, so that the application quantity of the warm air heating device is reduced; when the temperature of the water of the engine is higher than a third preset temperature T3, gradually opening the second valve; when there is no warm air demand, the first valve is closed.
The present application also provides an engine cooling method for the engine cooling system in the second preferred embodiment, wherein the engine cooling method includes the steps of: when the temperature of the water of the engine is lower than a third preset temperature T, only the cylinder cover and the engine oil cooler are cooled; when the temperature of the water of the engine is higher than the third preset temperature T, the cooling strength of the cylinder body is gradually enhanced while the cylinder cover and the engine oil cooler are cooled.
The present application further provides an engine cooling method for the engine cooling system in the fourth preferred embodiment, when there is a warm air demand, the engine cooling method includes the steps of: if the water temperature of the engine is higher than a warming threshold value T1 and lower than a second preset temperature T2, responding to the warm air demand; if the water temperature of the engine is lower than a warming threshold T1, not responding to the warm air demand; if the temperature of the water of the engine is higher than the second preset temperature T2, a loop between the engine and the warm air is still opened, but the application quantity of the warm air heating device is reduced.
The present application also provides a vehicle control system including: a memory, a processor, a communication bus, and an engine cooling program stored on the memory; the communication bus is used for realizing communication connection between the processor and the memory; the processor is configured to execute an engine cooling program stored on the memory to implement the steps of the engine cooling method of any of the above.
The present application finally provides a storage medium having stored thereon an engine cooling program which, when executed by a processor, implements the engine cooling method of any one of the above.
According to the application, the cooling waterways of the cylinder body and the cylinder cover are controlled in parallel, the flow adjustable device respectively controls the on-off of each pipeline according to the whole machine strategy, so that the purposes of quick warm-up, improvement of the heat efficiency of the whole machine, reduction of oil consumption and finally energy conservation and emission reduction are achieved.
Drawings
FIG. 1 is a block diagram of an engine cooling system in accordance with a preferred embodiment of the present application.
FIG. 2 is a block diagram of an engine cooling system in another preferred embodiment of the present application.
FIG. 3 is a flow chart of an engine cooling method according to a preferred embodiment of the application.
Detailed Description
The following describes in further detail the embodiments of the present application with reference to the drawings and examples. The following examples are illustrative of the application and are not intended to limit the scope of the application.
The terms first, second, third, fourth and the like in the description and in the claims, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.
Referring to fig. 1, an engine cooling system according to a first preferred embodiment of the present application includes a water tank 10 and a radiator 30. An electrodeless water pump 20, a cylinder cover 42, a cylinder body 44 and a flow adjustable device 60 are arranged between the water tank 10 and the radiator 30. The water inlet pipe 422 of the cylinder cover 42 and the water inlet pipe 442 of the cylinder body 44 are connected in parallel and are both connected with the water outlet pipe 202 of the electrodeless water pump 20, and the water outlet pipe 424 of the cylinder cover 42 and the water outlet pipe 444 of the cylinder body 44 are connected in parallel to the flow adjustable device 60. Through with the cylinder body cylinder cap reposition of redundant personnel, can cool off according to the different demands of cylinder body respectively, be favorable to realizing accurate thermal management for the warmup speed, and then promote complete machine thermal efficiency and reduce and discharge. The stepless water pump is adopted, the rotation speed of the water pump is regulated in a stepless way, and the flow conditions of different open circuits are regulated by matching with the flow adjustable device, so that the reaction is rapid. The cylinder body and cylinder cover cooling waterway is controlled in parallel, the flow adjustable device respectively controls the on-off of each pipeline according to the whole machine strategy, thereby realizing rapid warm-up, improving the heat efficiency of the whole machine, reducing oil consumption and finally achieving the purposes of energy conservation and emission reduction.
With further reference to fig. 1, the water outlet pipe 424 of the cylinder cover 42 is provided with a first cylinder cover water outlet pipe 421 and a second cylinder cover water outlet pipe 423 which are connected in parallel with the water outlet pipe 444 of the cylinder body 44, the first cylinder cover water outlet pipe 421 is provided with an oil cooler 82, and the tail ends of the first cylinder cover water outlet pipe 421 and the second cylinder cover water outlet pipe 423 are both connected with the flow adjustable device 60, so that the oil cooler is arranged at the rear end of the cylinder cover and is controlled in parallel with warm air. An engine oil cooler is arranged at the rear end of the cylinder cover, so that the requirements of the engine oil cooler in different stages are skillfully met, and the requirements of engine oil heating, heat dissipation of relatively high oil temperature after the completion of the warm-up stage are met. The engine oil cooler loop is arranged at the rear end of the cylinder cover, and cooling liquid which does not dissipate heat can be used for heating engine oil in the warming-up stage, so that the warming-up speed is improved, the emulsification risk of the engine oil is reduced, and the oil consumption and emission are reduced; after the warm-up is finished, the engine oil can be cooled by using relatively high engine water temperature, the friction work of the whole engine can be reduced by using the engine oil with relatively high temperature, and the thermal efficiency of the engine is improved. The engine oil cooler and the warm air are controlled in parallel, so that extra energy dissipation caused by the fact that the warm air must respond after being connected in series in the warming process can be avoided, strategy conflict can be avoided, and network safety is realized.
The present application further provides a second preferred embodiment, wherein the water outlet pipe 424 of the cylinder cover 42 includes a third cylinder cover water outlet pipe 425 connected in parallel with the first cylinder cover water outlet pipe 421, the third cylinder cover water outlet pipe 425 is provided with warm air 84, the starting ends of the third cylinder cover water outlet pipe 425 and the second cylinder cover water outlet pipe 423 share the same section of pipeline, and the tail ends are connected to the flow adjustable device 60. The warm air 84 is arranged at the rear end of the cylinder cover 42, so that the characteristics that the cooling liquid does not pass through the radiator 30 and the temperature is relatively high can be utilized, the heat exchange efficiency is improved, the heat efficiency of the engine is improved, and the oil consumption is reduced. The first valve 52 of the warm air 84 passage is arranged at the rear end of the cylinder cover, and can improve the heat exchange efficiency of the warm air by using relatively high-temperature cooling liquid which does not pass through a pipeline or is a radiator. By means of the adoption of the electrodeless water pump and the flow adjustable device, the cooling system can realize on-demand split control of the cylinder body and the cylinder cover, and meanwhile, the heat efficiency of the engine can be further improved by means of the arrangement mode of the engine oil cooler and the warm air pipeline, and energy conservation and emission reduction are achieved.
The third preferred embodiment of the present application is further provided, wherein the flow rate adjusting device 60 has a first water outlet pipe 602 and a second water outlet pipe 604, the first water outlet pipe 602 is provided with the small circulation path 70, the second water outlet pipe 604 is provided with the radiator 30, and the ends of the first water outlet pipe 602 and the second water outlet pipe 604 share the same pipeline and are connected to the electrodeless water pump 20.
The present application also provides a fourth preferred embodiment, as can be seen in fig. 2, wherein the flow-rate adjustable device 60 further has a first inlet pipe 601, a second inlet pipe 603 and a third inlet pipe 605. The first cylinder cover water outlet pipe 421 and the third cylinder cover water outlet pipe 425 are connected with a first water inlet pipe 601, the second cylinder cover water outlet pipe 423 is connected with a second water inlet pipe 603, and the water outlet pipe 444 of the cylinder body 44 is connected with a third water inlet pipe 605. The warm air 84 has a warm air intake pipe 842, the warm air intake pipe 842 is provided with a first valve 52, the third intake pipe 603 is provided with a second valve 54, the first outlet pipe 602 is provided with a third valve 56, and the second outlet pipe 604 is provided with a fourth valve 58. When the stepless water pump adopts different rotating speeds to provide flow for the engine cooling system according to the needs, the flow adjustable device controls the on-off and the flow of each branch through the first valve 52, the second valve 54, the third valve 56 and the fourth valve 58.
In detail, the three inlets and the two outlets of the flow-rate-adjustable device 60 are respectively connected to different branches, and the on-off and flow rate of each branch are controlled by the second valve 54, the third valve 56 and the fourth valve 58, and the second valve 54, the third valve 56 and the fourth valve 58 may be three ball valves. Specifically:
step S11, after the whole vehicle is electrified, the temperature control module and the engine water temperature sensor perform self-checking, and if a problem occurs, the whole vehicle is limited to twist or is switched to a large cycle;
step S13, if the temperature control module and the engine water temperature sensor are normal, reading the temperature of the engine water temperature sensor, and entering a normal working mode; the water temperature sensors can be respectively arranged in the cylinder body and the cylinder cover, after the whole vehicle cooling system completes self-checking, the engine cooling system enters a normal working mode, and whether the engine cooling system enters the normal working mode or not is judged by reading the water temperature of the engine, and the working state of each valve is judged;
step S15, the waterway of the oil cooler is a normally-open loop, the water discharged from the cylinder cover heats the engine oil in the warming-up stage, and after the engine oil is switched to a large circulation, the engine oil is heated or cooled by cooling liquid with relatively high temperature passing through the cylinder cover, so that the engine oil is ensured to work at relatively high temperature;
step S17, for the warm air loop, according to the warm-up requirement, in the warm-up stage with relatively low engine water temperature, namely when the engine water temperature is smaller than the warm-up threshold T1, the warm air loop is cut off through the first valve 52 so as to mainly increase the speed of the heat engine; when the engine water temperature is greater than the warm-up threshold T1 and less than the second preset temperature T2, gradually opening the first valve 52 to respond to the heating demand; when no warm air is required, the passage is cut off through the first valve 52, so that the pressure loss of a cooling system is reduced, and the power consumption of the electrodeless water pump 20 is reduced;
in step S19, for the split system, if the engine water temperature is lower than the third preset temperature T3 in the warm-up phase, the second valve 54 between the cylinder 44 and the flow rate adjustable device 60 is closed, the engine oil cooler 82 and the warm air 84 respond according to the demands in step S15 and step S17, and when the engine water temperature is higher than the third preset temperature T3, the second valve 54 between the cylinder 44 and the flow rate adjustable device 60 is gradually opened.
The design of the electrodeless water pump and the flow adjustable device is an important part for realizing accurate heat management, the electrodeless water pump is not determined by the output rotating speed of the crankshaft of the engine any more, the specific rotating speed can be set according to the heat dissipation requirement of the whole system, and the flow adjustable device controls the on-off of each valve according to the requirement of each device.
In a fifth preferred embodiment of the present application, the present application provides a vehicle having any one of the engine cooling systems described above.
In a sixth preferred embodiment of the present application, the present application further provides an engine cooling method for any of the above engine cooling systems. In detail, in the warm-up phase, the engine cooling method includes the steps of: when the temperature of the water of the engine is lower than a third preset temperature T3, only the cylinder cover and the engine oil cooler are cooled; when the temperature of the water of the engine is higher than the third preset temperature T3, the cooling strength of the cylinder body is gradually enhanced while the cylinder cover and the engine oil cooler are cooled. The cylinder body and the cylinder cover are split and cooled according to the need, an early opening strategy is implemented for the cylinder cover with higher heat dissipation requirement, and the cylinder body flow passage valve is opened later, so that the opening time point of the cylinder cover is earlier than that of the cylinder body, the opening time point of the cylinder body is later than that of the cylinder cover, the energy dissipation can be reduced, the heat engine speed is improved, and the heat engine is a part for realizing accurate heat management.
In a seventh preferred embodiment of the present application, the present application also provides an engine cooling method for the engine cooling system in the second preferred embodiment. In detail, when there is a warm air demand, the engine cooling method includes the steps of: if the water temperature of the engine is higher than a warming threshold T1 and lower than a second preset temperature T2, responding to the warm air demand; if the water temperature of the engine is lower than a warming threshold T1, not responding to the warm air demand; if the temperature of the water of the engine is higher than the second preset temperature T2, a loop between the engine and the warm air is still opened, but the application quantity of the warm air heating device is reduced.
In an eighth preferred embodiment of the present application, the present application further provides an engine cooling method for the engine cooling system in the fourth preferred embodiment. Referring to FIG. 3, in this embodiment, the engine cooling method includes the steps of:
step S31, in the warm-up stage, if the water temperature of the engine is lower than a warm-up threshold T1, closing a first valve between the engine and warm air, and gradually opening the first valve when the water temperature of the engine is higher than the warm-up threshold T1 and the warm-up requirement exists; in detail, when the engine is in the warm-up stage, if the water temperature of the engine is lower than the warm-up threshold T1, in order to reduce the warm-up time, the valve first valve between the engine and the warm air is closed, and when the water temperature of the engine is higher than the warm-up threshold T1 and there is a warm-up demand, the first valve is gradually opened;
step S33, when the temperature of the water of the engine rises to a warming threshold value T1 and is smaller than a second preset temperature T2 and warm air is required, a first valve between the engine and the warm air device is gradually opened so as to improve the heat exchange efficiency of the warm air;
step S35, when the temperature of the water of the engine is higher than the second preset temperature T2, opening a fourth valve, and if the warm air demand still exists, opening the first valve, so that the application quantity of the warm air heating device is reduced; in detail, when the water temperature of the engine is greater than the second preset temperature T2, the warming process is finished, the fourth valve of the radiator valve is opened, and if the warm air demand is still met, the 1 st valve is still opened, namely, the loop between the engine and the warm air is still opened, so that the application quantity of the warm air heating device is reduced, for example, the application of a warm air PTC (Positive Temperature Coefficient; heating ceramic plate) is reduced, and the heat exchange efficiency is improved;
step S37, when the temperature of the water of the engine is higher than a third preset temperature T3, gradually opening a second valve; in detail, when the water temperature of the engine is higher than a third preset temperature T3, the second valve is gradually opened, namely a loop between the cylinder body and the flow-adjustable device is gradually opened, so that the risk of over-temperature of the cylinder body is avoided;
step S39, when no warm air is required, closing the first valve; in detail, when no warm air is required, the first valve is closed, namely, the warm air loop is cut off under the condition that no warm air is required, so that the pressure loss of the whole system is reduced, the power consumption of the water pump is reduced, and the heat efficiency of the engine is further improved, and the oil consumption is reduced;
in a ninth preferred embodiment of the present application, the present application provides a vehicle control system comprising: memory, processor, communication bus, and engine cooling program stored on the memory. The communication bus is used for realizing communication connection between the processor and the memory. The processor is configured to execute an engine cooling program stored on the memory to implement any one of the engine cooling methods described above.
In a tenth preferred embodiment of the present application, the present application provides a storage medium having stored thereon an engine cooling program which, when executed by a processor, implements any one of the engine cooling methods described above.
The application makes the cylinder body and the cylinder cover of the engine cool in a split-flow way, adopts the flow adjustable device and the electrodeless water pump, and skillfully arranges the engine oil cooler and the water taking position of warm air. The application of the split cooling technology is a part of accurate heat management of an engine, and the water temperature of the cylinder body and the cylinder cover at different stages can be accurately controlled through the distribution calculation of the heat of the engine. The flow-adjustable device and the electrodeless water pump are important means for realizing accurate heat management of the engine, different water pump rotating speeds provide flow for the whole cooling system as required, and the flow-adjustable device is controlled by different interfaces to realize the flow adjustment of different devices as required. The arrangement of the engine oil cooler at the rear end of the cylinder cover skillfully solves the requirements of maintaining relatively high oil temperature after the engine oil cooler is heated and warmed up in different stages, including a warming-up stage. The arrangement of the warm air at the rear end of the cylinder cover is ingenious, and the temperature of the cooling liquid is relatively high because the cooling liquid does not pass through the radiator, so that the heat exchange efficiency can be improved, the heat efficiency of the engine is improved, and the oil consumption is reduced.
In summary, the application makes the engine cylinder cover cool by the split flow, designs the connecting passage of the electrodeless water pump and the flow adjustable device, designs the circulation mode of the warm air and the engine oil cooler device, realizes the accurate heat management of the engine, improves the heat efficiency of the engine, reduces the oil consumption, and further realizes the purposes of energy conservation and emission reduction.
The foregoing is merely illustrative of the present application, and the present application is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (9)
1. An engine cooling system comprising a water tank (10) and a radiator (30), characterized in that:
an electrodeless water pump (20), a cylinder cover (42), a cylinder body (44) and a flow adjustable device (60) are arranged between the water tank (10) and the radiator (30);
the water inlet pipe (422) of the cylinder cover (42) and the water inlet pipe (442) of the cylinder body (44) are connected in parallel and are connected with the water outlet pipe (202) of the electrodeless water pump (20), and the water outlet pipe (424) of the cylinder cover (42) and the water outlet pipe (444) of the cylinder body (44) are connected in parallel to the flow adjustable device (60);
the water outlet pipe (424) of the cylinder cover (42) is provided with a first cylinder cover water outlet pipe (421) and a second cylinder cover water outlet pipe (423) which are connected with the water outlet pipe (444) of the cylinder body (44) in parallel, an organic oil cooler (82) is arranged on the first cylinder cover water outlet pipe (421), and the tail ends of the first cylinder cover water outlet pipe (421) and the second cylinder cover water outlet pipe (423) are both connected with the flow adjustable device (60);
the water outlet pipe (424) of the cylinder cover (42) comprises a third cylinder cover water outlet pipe (425) which is connected with the first cylinder cover water outlet pipe (421) in parallel, warm air (84) is arranged on the third cylinder cover water outlet pipe (425), the third cylinder cover water outlet pipe (425) and the starting end of the second cylinder cover water outlet pipe (423) share the same section of pipeline, and the tail ends of the third cylinder cover water outlet pipe and the starting end of the second cylinder cover water outlet pipe are both connected with the flow adjustable device (60);
the flow adjustable device (60) is further provided with a first water inlet pipe (601), a second water inlet pipe (603) and a third water inlet pipe (605);
the first cylinder cover water outlet pipe (421) and the third cylinder cover water outlet pipe (425) are connected with the first water inlet pipe (601), the second cylinder cover water outlet pipe (423) is connected with the second water inlet pipe (603), and the water outlet pipe (444) of the cylinder body (44) is connected with the third water inlet pipe (605).
2. The engine cooling system according to claim 1, characterized in that: the flow-adjustable device (60) is provided with a first water outlet pipe (602) and a second water outlet pipe (604), a small circulation passage (70) is arranged on the first water outlet pipe (602), a radiator (30) is arranged on the second water outlet pipe (604), and the tail ends of the first water outlet pipe (602) and the second water outlet pipe (604) share the same pipeline and are connected to the electrodeless water pump (20).
3. The engine cooling system according to claim 2, characterized in that:
the warm air (84) is provided with a warm air inlet pipe (842), a first valve (52) is arranged on the warm air inlet pipe (842), a second valve (54) is arranged on the third inlet pipe (605), a third valve (56) is arranged on the first water outlet pipe (602), and a fourth valve (58) is arranged on the second water outlet pipe (604);
when the electrodeless water pump adopts different rotating speeds to provide flow for the engine cooling system as required, the flow adjustable device controls the on-off and the flow of each branch through the first valve (52), the second valve (54), the third valve (56) and the fourth valve (58).
4. A vehicle characterized in that it has an engine cooling system as claimed in any one of claims 1 to 3.
5. An engine cooling method for the engine cooling system of claim 1, characterized in that during a warm-up phase, the engine cooling method comprises the steps of: when the temperature of the water of the engine is lower than a third preset temperature T3, only the cylinder cover and the engine oil cooler are cooled; when the temperature of the water of the engine is higher than the third preset temperature T3, the cooling strength of the cylinder body is gradually enhanced while the cylinder cover and the engine oil cooler are cooled.
6. The engine cooling method according to claim 5, characterized in that:
the engine cooling method further includes the steps of: when there is a warm air demand, the engine cooling method includes the steps of: if the water temperature of the engine is higher than a warming threshold value T1 and lower than a second preset temperature T2, responding to the warm air demand; if the water temperature of the engine is lower than a warming threshold T1, not responding to the warm air demand; if the temperature of the water of the engine is higher than the second preset temperature T2, a loop between the engine and the warm air is still opened, but the application quantity of the warm air heating device is reduced.
7. The engine cooling method according to claim 5, characterized in that:
in the engine cooling system, the flow-rate-adjustable device (60) is provided with a first water outlet pipe (602) and a second water outlet pipe (604), the warm air (84) is provided with a warm air water inlet pipe (842), a first valve (52) is arranged on the warm air water inlet pipe (842), a second valve (54) is arranged on the third water inlet pipe (603), a third valve (56) is arranged on the first water outlet pipe (602), and a fourth valve (58) is arranged on the second water outlet pipe (604); when the electrodeless water pump adopts different rotating speeds to provide flow for the engine cooling system as required, the flow adjustable device controls the on-off and the flow of each branch through the first valve (52), the second valve (54), the third valve (56) and the fourth valve (58);
the engine cooling method includes the steps of:
when the water temperature of the engine is lower than a warm-up threshold value T1, closing the first valve between the engine and the warm air, and when the water temperature of the engine is higher than the warm-up threshold value T1 and a warm-up requirement exists, gradually opening the first valve;
when the temperature of the water of the engine rises to a warming threshold value T1 and is smaller than a second preset temperature T2, and when warm air is required, the first valve between the engine and the warm air device is gradually opened;
when the temperature of the water of the engine is higher than a second preset temperature T2, opening the fourth valve, and if the warm air demand still exists, opening the 1 st valve, so that the application quantity of the warm air heating device is reduced;
when the temperature of the engine water is higher than a third preset temperature T3, gradually opening the second valve;
when there is no warm air demand, the first valve is closed.
8. A vehicle control system characterized in that: the vehicle control system includes: a memory, a processor, a communication bus, and an engine cooling program stored on the memory;
the communication bus is used for realizing communication connection between the processor and the memory;
the processor is configured to execute an engine cooling program stored on the memory to implement the steps of the engine cooling method of any one of claims 5 to 7.
9. A storage medium having stored thereon an engine cooling program which, when executed by a processor, implements the engine cooling method of any one of claims 5 to 7.
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