CN108278172B - Automobile engine cooling system and cooling method - Google Patents
Automobile engine cooling system and cooling method Download PDFInfo
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- CN108278172B CN108278172B CN201711395191.6A CN201711395191A CN108278172B CN 108278172 B CN108278172 B CN 108278172B CN 201711395191 A CN201711395191 A CN 201711395191A CN 108278172 B CN108278172 B CN 108278172B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N19/00—Starting aids for combustion engines, not otherwise provided for
- F02N19/02—Aiding engine start by thermal means, e.g. using lighted wicks
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M5/00—Heating, cooling, or controlling temperature of lubricant; Lubrication means facilitating engine starting
- F01M5/02—Conditioning lubricant for aiding engine starting, e.g. heating
- F01M5/021—Conditioning lubricant for aiding engine starting, e.g. heating by heating
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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
- F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
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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
-
- 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
- F01P5/00—Pumping cooling-air or liquid coolants
- F01P5/10—Pumping liquid coolant; Arrangements of coolant pumps
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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
-
- 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
- F01P2003/021—Cooling cylinders
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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
- F01P2003/024—Cooling cylinder heads
-
- 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
-
- 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
- F01P2050/00—Applications
- F01P2050/22—Motor-cars
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
The invention discloses an automobile engine cooling system and a cooling method, wherein the automobile engine cooling system comprises a cylinder body, a cylinder cover, a water storage kettle, a heating and ventilating device, a radiator, an engine oil cooler and a thermal management module; the heat management module is provided with a control valve, a normally-open cylinder cover water jacket interface, a water storage kettle interface, an engine oil cooler interface, a cylinder cover water passage interface with an adjustable connection area through the control valve, a heating and ventilation interface and a radiator interface. When in cold start, the connecting areas of the water passage interface, the heating and ventilation interface and the radiator interface of the cylinder cover are all 0; during warming, the connection area of a water passage interface and a radiator interface of a cylinder cover is 0, and the connection area of a heating and ventilating interface is 100%; when the engine is heated, the connecting area of the radiator interface is 0, and the connecting area of the heating and ventilation interface and the cylinder cover water passage interface is 100%; at high temperature, the connecting areas of the water passage interface, the heating and ventilation interface and the radiator interface of the cylinder cover are all 100 percent. The invention can improve the warming speed and the engine oil warming speed and reduce the oil consumption.
Description
Technical Field
the invention belongs to the technical field of automobile engines, and particularly relates to an automobile engine cooling system and a cooling method.
Background
Engine warm-up refers to a process in which the temperature of the engine body rises from a low temperature to a normal operating temperature. When the engine is in a cold start working condition, because the temperature of an air inlet system and a cylinder is low, gasoline is difficult to completely evaporate, incomplete combustion can be caused, a large amount of hydrocarbon is discharged, and meanwhile, the problem of extra increase of the oil quantity can be caused due to poor gasoline combustion condition; in addition, the engine oil temperature of the engine is low, the friction of moving components in the engine is large, and the oil consumption is also large; therefore, it is necessary to increase the warming-up speed as quickly as possible and increase the oil temperature increase speed.
Disclosure of Invention
The invention aims to provide an automobile engine cooling system and a cooling method, which are used for improving the warming-up speed and the engine oil warming-up speed and reducing the oil consumption.
The cooling system of the automobile engine comprises a water pump, a cylinder body, a cylinder cover, a water storage kettle, a heating and ventilating device, a radiator and an engine oil cooler, wherein a cylinder body water jacket and a cylinder body water passage are arranged on the cylinder body, and a cylinder cover water jacket and a cylinder cover water passage are arranged on the cylinder cover; the cooling system further comprises a thermal management module, wherein the thermal management module is provided with a control valve, a normally-open cylinder cover water jacket interface, a normally-open water storage kettle interface, a normally-open engine oil cooler interface, a cylinder cover water passage interface with an adjustable communication area through the control valve, a heating communication interface with an adjustable communication area through the control valve and a radiator interface with an adjustable communication area through the control valve. The water outlet of the water pump is connected with the water inlet of the cylinder body water passing channel, the first water outlet of the cylinder body water passing channel is connected with the water inlet of the cylinder cover water jacket, the second water outlet of the cylinder body water passing channel is connected with the water inlet of the cylinder cover water passing channel, the water outlet of the cylinder cover water passing channel is connected with the cylinder cover water passing channel interface, the water outlet of the cylinder cover water jacket is connected with the cylinder cover water jacket interface, the water storage kettle interface is connected with the first water inlet of the water storage kettle, the water outlet of the water storage kettle is connected with the first water inlet of the water pump, the heating channel interface is connected with the water inlet of the heating channel, the water outlet of the heating channel is connected with the second water inlet of the water pump, the oil cooler interface is connected with the water inlet of the oil cooler, the water inlet of the radiator is connected with the radiator interface, the second water outlet of the radiator is connected with the second water inlet of the water storage kettle.
A first temperature sensor is arranged on the heat management module corresponding to the position of the cylinder cover water jacket interface and used for detecting the temperature of cooling liquid flowing out of the cylinder cover water jacket; a second temperature sensor is arranged at the first water outlet of the radiator and used for detecting the temperature of the cooling liquid flowing out of the first water outlet of the radiator; the first and second temperature sensors are electrically connected to an engine controller (i.e., an engine ECU) and transmit the detected coolant temperature to the engine controller.
The heat management module is provided with a motor driving module, a motor and an angle position sensor, the motor driving module, the angle position sensor is electrically connected with the engine controller, the motor is electrically connected with the motor driving module, an output shaft of the motor is connected with the control valve in a positioning mode, the angle position sensor sends the current angle of the detected control valve to the engine controller, the engine controller controls the motor driving module to drive the motor to rotate according to the temperature of cooling liquid, the operating condition of the engine and the current angle of the control valve, and the control valve adjusts the connection area of a water channel interface and/or a heating and ventilation interface and/or a radiator interface of a cylinder cover. The engine controller is used for controlling, the motor drives the control valve to rotate to adjust the connection area of certain interfaces, and the engine control device is simple in structure and convenient to control.
The oil cooler is an engine oil cooler and a transmission oil cooler which are arranged in parallel. The oil cooler of the transmission is connected to a cooling system for circulation, so that the temperature rise of the oil of the transmission can be accelerated during cold starting and warm-up, the friction work of the transmission is reduced, and the oil consumption is reduced.
The method for cooling the engine by adopting the automobile engine cooling system comprises the following steps:
When the engine is in a cold start working condition, the connecting areas of the water channel interface of the cylinder cover, the warm-ventilation interface and the radiator interface are all 0, cooling liquid flows out of the water pump, flows into the water jacket of the cylinder cover through the water channel of the cylinder body, absorbs heat of the cylinder cover and then flows into the heat management module through the water jacket interface of the cylinder cover, part of the cooling liquid in the heat management module flows back to the water pump through the water storage kettle interface and the water storage kettle, the other part of the cooling liquid in the heat management module flows into the engine oil cooler through the engine oil cooler interface to heat the engine oil and then flows back to the water pump, and the cooling liquid in the water jacket of the cylinder body, the warm-ventilation.
When the engine is in a warming working condition, the connection area of a water channel interface of a cylinder cover and a radiator interface is 0, the connection area of a warming and ventilating interface is gradually changed from 0 to 100%, cooling liquid flows out of a water pump, flows into a water jacket of the cylinder cover through a water channel of a cylinder body, absorbs heat of the cylinder cover and then flows into a heat management module through the water jacket interface of the cylinder cover, a first part of cooling liquid in the heat management module flows back to the water pump through a water storage kettle interface and a water storage kettle, a second part of cooling liquid in the heat management module flows into an engine oil cooler through an engine oil cooler interface to heat engine oil and then flows back to a water pump, a third part of cooling liquid in the heat management module flows into the warming and ventilating interface through the warming and ventilating interface to exchange heat and then flows back to the water pump, and the cooling liquid in the.
When the engine is in a heat engine working condition, the connecting area of the radiator interface is 0, the connecting area of the heating and ventilation interface is 100%, the connecting area of the water passage interface of the cylinder cover is gradually changed from 0 to 100%, the cooling liquid flows out of the water pump, one part of the cooling liquid flows into the water jacket of the cylinder cover through the water passage of the cylinder body, the heat of the cylinder cover is absorbed and flows into the water jacket of the cylinder body through the water passage of the cylinder body, the heat of the cylinder body is absorbed and flows into the heat management module through the water passage of the cylinder cover and the water passage interface of the cylinder cover, the first part of the cooling liquid in the heat management module flows back to the water pump through the water storage kettle interface and the water storage kettle, the second part of the cooling liquid in the heat management module flows into the engine oil cooler through the engine oil cooler interface, the engine oil is heated and then flows back to the water pump, and the third part of the cooling liquid, then flows back to the water pump, and the cooling liquid in the radiator does not participate in the circulating flow.
When the engine is in a high-temperature working condition, the connecting areas of a water channel interface and a heating and ventilation interface of a cylinder cover are both 100 percent, the connecting area of a radiator interface is gradually changed from 0 to 100 percent, cooling liquid flows out of a water pump, one part of the cooling liquid flows into a water jacket of the cylinder cover through a water channel of the cylinder body, absorbs the heat of the cylinder cover and flows into a heat management module through the water channel of the cylinder cover, the other part of the cooling liquid flows into the water jacket of the cylinder body through the water channel of the cylinder cover and the water channel interface of the cylinder cover, the first part of the cooling liquid in the heat management module flows back to the water pump through a water storage kettle interface and a water storage kettle, the second part of the cooling liquid in the heat management module flows into an engine oil cooler through an engine oil cooler interface to heat engine oil and then flows back to the water pump, and the third part of the cooling liquid in the heat management, and then the cooling liquid flows back to the water pump, the fourth part of cooling liquid in the heat management module flows into the radiator through the radiator interface for heat dissipation, and one part of cooling liquid after heat dissipation flows back to the water pump and the other part of cooling liquid flows into the water storage kettle.
The invention has the following effects:
(1) The heat management module is used for adjusting the size of the connection area of different interfaces, the distribution of the flow of the cooling liquid can be controlled, the rapid warming of the engine oil and the rapid warming of the engine oil are realized, and the oil consumption is reduced.
(2) In the cold starting stage of the engine, the cooling liquid in the water jacket of the cylinder body does not flow, so that the temperature rise of the cylinder wall is accelerated, the warming is realized to the maximum extent, and the friction work is reduced; the heating and ventilation branch is also disconnected (corresponding to the cooling liquid in the heating and ventilation does not flow), the capacity of the cooling liquid which participates in circulation of the whole cooling system is small, the temperature rise of the cooling liquid is accelerated, the cooling liquid which flows out from a water jacket of a cylinder cover and absorbs the heat of the cylinder cover flows into an engine oil cooler to heat the engine oil, and the engine oil is rapidly heated, so that the friction of moving components in the engine is reduced, and the oil consumption and the emission are reduced.
(3) In the engine warming stage, the coolant in the water jacket of the cylinder body and the coolant in the radiator are kept not to flow, the heating and ventilating channel is communicated, the temperature of the heating and ventilating coolant is enabled to rise rapidly, the oil consumption is reduced on the one hand, and the comfort of a user in a cold environment is improved on the other hand.
(4) in the engine heat engine stage, the cylinder cover water jacket and the cylinder body water jacket are kept in a parallel connection structure, the flow of engine coolant is increased to the maximum extent, the coolant in the radiator is kept not to flow, the cylinder body water jacket channel is opened, the coolant in the cylinder body water jacket participates in circulation, the reliability of the cylinder body is improved, and knocking caused by overhigh temperature of the cylinder body coolant in the engine is avoided.
(5) In the high-temperature stage of the engine, the cylinder cover water jacket and the cylinder body water jacket are kept in a parallel structure, the flow of the cooling liquid of the engine is increased to the maximum extent, the radiator is opened to enable the cooling liquid to flow in the radiator, the temperature of a cooling system is reduced, the engine works in a proper temperature range, and the reliability of the engine is improved.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
FIG. 2 is a schematic structural diagram of a thermal management module according to the present invention.
FIG. 3 is a partial cross-sectional view of a thermal management module of the present invention.
fig. 4 is a circuit control block diagram of the present invention.
FIG. 5 is a schematic coolant flow diagram when the engine is in a cold start condition.
FIG. 6 is a schematic flow diagram of coolant flow when the engine is in a warm-up condition.
FIG. 7 is a schematic flow diagram of coolant when the engine is in a hot engine operating condition.
FIG. 8 is a schematic flow diagram of coolant when the engine is in a high temperature operating condition.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
The cooling system of the automobile engine shown in fig. 1 to 4 comprises a water pump 1, a cylinder body 2, a cylinder cover 3, a water storage pot 4, a heating and ventilating device 5, a radiator 6, a thermal management module 8, an engine oil cooler 71 and a transmission oil cooler 72 which are arranged in parallel; the cylinder body 2 is provided with a cylinder body water jacket 21 and a cylinder body water passage 22, the cylinder cover 3 is provided with a cylinder cover water jacket 31 and a cylinder cover water passage 32, the thermal management module 8 is provided with a control valve 80, a motor driving module 87, a motor 88, an angle position sensor 89, a normally-open cylinder cover water jacket interface 81, a normally-open water storage kettle interface 82, a normally-open engine oil cooler interface 83, a cylinder cover water passage interface 84 with an adjustable connecting area through the control valve 80, a heating interface 85 with an adjustable connecting area through the control valve 80 and a radiator interface 86 with an adjustable connecting area through the control valve 80, a first temperature sensor 9 electrically connected with an engine controller (namely an engine ECU) is arranged on the thermal management module 8 corresponding to the position of the cylinder cover water jacket interface 81, the first temperature sensor 9 is used for detecting the temperature of cooling liquid flowing out of the cylinder cover water jacket 31, the motor driving module 87 and the angle position, the motor 88 is electrically connected with the motor driving module 87, and an output shaft of the motor 88 is in positioning connection with the control valve 80 through a spline; the water outlet of the water pump 1 is connected with the water inlet of the cylinder body water passage 22, the first water outlet of the cylinder body water passage 22 is connected with the water inlet of the cylinder cover water jacket 31, the second water outlet of the cylinder body water passage 22 is connected with the water inlet of the cylinder body water jacket 21, the water outlet of the cylinder cover water passage 32 is connected with the water inlet of the cylinder cover water passage 84, the water outlet of the cylinder cover water jacket 31 is connected with the cylinder cover water jacket interface 81, the water storage kettle interface 82 is connected with the first water inlet of the water storage kettle 4, the water outlet of the water storage kettle 4 is connected with the first water inlet of the water pump 1, the warm air interface 85 is connected with the water inlet of the warm air blower 5, the water outlet of the warm air blower 5 is connected with the second water inlet of the water pump 1, the engine oil cooler interface 83 is connected with the water inlets of the engine oil cooler 71 and the transmission oil, the radiator interface 86 is connected with a water inlet of the radiator 6, a first water outlet of the radiator 6 is connected with a third water inlet of the water pump 1, a second temperature sensor 10 electrically connected with the engine controller is arranged at the first water outlet of the radiator 6, the second temperature sensor 10 is used for detecting the temperature of the coolant flowing out of the first water outlet of the radiator 6, and a second water outlet of the radiator 6 is connected with a second water inlet of the water storage kettle 4.
The first temperature sensor and the second temperature sensor send the detected coolant temperature to an engine controller, the angle position sensor 89 sends the detected current angle of the control valve 80 to the engine controller, and the engine controller calculates the target angle of the control valve 80 according to the coolant temperature and the engine operation condition; and after comparing the target angle of the control valve 80 with the current angle, outputting a control instruction to the motor driving module 87, that is, the engine controller controls the motor driving module 87 to drive the motor 88 to rotate according to the temperature of the coolant, the operating condition of the engine and the current angle of the control valve, the motor 88 drives the control valve 80 to rotate, and the control valve 80 adjusts the connection area of the water channel interface 84 and/or the heating and ventilation interface 85 and/or the radiator interface 86 of the cylinder head.
The method for cooling the engine by adopting the automobile engine cooling system comprises the following steps:
as shown in fig. 5, when the engine is in a cold start condition, the engine controller controls the motor driving module 87 to drive the motor 88 to rotate, the motor 88 drives the control valve 80 to rotate, the control valve 80 makes the connection areas of the cylinder cover water passage interface 84, the warming and ventilating interface 85 and the radiator interface 86 all equal to 0 (namely, the cylinder cover water passage interface 84, the warming and ventilating interface 85 and the radiator interface 86 are all disconnected), the cooling liquid flows out from the water pump 1, flows into the cylinder cover water jacket 31 through the cylinder body water passage 22, absorbs the heat of the cylinder cover 3, flows into the thermal management module 8 through the cylinder cover water jacket interface 84, a part of the cooling liquid in the thermal management module 8 flows back to the water pump 1 through the water storage kettle interface 82 and the water storage kettle 4, the other part of the cooling liquid in the thermal management module 8 flows into the engine oil cooler 71 and the transmission oil cooler 72 through the oil cooler interface 83, heats the engine oil, the coolant in the block water jacket 21, the heating radiator 5, and the radiator 6 does not participate in the circulation flow. The cooling liquid in the water jacket 21 of the cylinder body does not flow, so that the temperature rise of the cylinder wall is accelerated, the warming is realized to the maximum extent, and the friction work is reduced; the heating and ventilation branch is also disconnected (corresponding to the coolant in the heating and ventilation 5 does not flow), the capacity of the coolant which participates in the circulation of the whole cooling system is small, the temperature rise of the coolant is accelerated, and the coolant which flows out from the cylinder cover water jacket 31 and absorbs the heat of the cylinder cover 3 flows into the engine oil cooler 71 and the transmission oil cooler 72 to heat the engine oil, so that the temperature rise speed of the engine oil is increased, and the purposes of saving oil and reducing emission are achieved.
as shown in fig. 6, when the engine is in a warm-up condition, the engine controller controls the motor driving module 87 to drive the motor 88 to rotate, the motor 88 drives the control valve 80 to rotate, the control valve 80 makes the connection area of the cylinder cover water passage interface 84 and the radiator interface 86 be 0 (i.e. the cylinder cover water passage interface 84 and the radiator interface 86 are disconnected), the control valve 80 gradually changes the connection area of the heating and ventilation interface 85 from 0 to 100% (i.e. the heating and ventilation interface 85 is connected), the coolant flows out of the water pump 1, flows into the cylinder cover water jacket 31 through the cylinder body water passage 22, absorbs the heat of the cylinder cover 3, flows into the thermal management module 8 through the cylinder cover water jacket interface 81, the first part of the coolant in the thermal management module 8 flows back to the water pump 1 through the water storage kettle interface 82 and the water storage kettle 4, the second part of the coolant in the thermal management module 8 flows into the engine oil cooler 71 and the, the engine oil is heated and then flows back to the pump 1, the third part of the cooling liquid in the thermal management module 8 flows into the heating and ventilating device 5 through the heating and ventilating interface 85 for heat exchange, and then flows back to the pump 1, the cylinder water jacket 21 and the cooling liquid in the radiator 6 do not participate in the circulating flow. This operating mode is when the cold start operating mode intensifies to coolant temperature and no longer is sensitive to engine oil consumption, keeps the coolant in cylinder body water jacket 21 and the coolant in the radiator 6 not to flow, and the passageway of warm logical 5 of switch-on makes the coolant temperature of warm logical 5 rise fast, has reduced the oil consumption on the one hand, and on the other hand has promoted the travelling comfort of user under cold circumstance. Under the working condition, the engine controller can also control the motor driving module 87 to drive the motor 88 to rotate according to the temperature of the coolant detected by the first temperature sensor 9, the motor 88 drives the control valve 80 to rotate, and the control valve 80 adjusts the connection area of the heating and ventilation interface 85, so as to adjust the flow rate of the coolant flowing into the heating and ventilation 5.
As shown in fig. 7, when the engine is in a heat engine operating condition, the engine controller controls the motor driving module 87 to drive the motor 88 to rotate, the motor 88 drives the control valve 80 to rotate, the control valve 80 makes the connection area of the radiator connector 86 be 0 (i.e. the radiator connector 86 is disconnected), makes the connection area of the heating connector 85 be 100% (i.e. the heating connector 85 is connected), makes the connection area of the cylinder cover water passage connector 84 gradually change from 0 to 100% (i.e. the cylinder cover water passage connector 84 is connected), the cooling liquid flows out of the water pump 1, a part of the cooling liquid flows into the cylinder cover water jacket 31 through the cylinder cover water passage 22, absorbs the heat of the cylinder cover 3 and then flows into the thermal management module 8 through the cylinder cover water passage connector 81, another part of the cooling liquid flows into the cylinder cover water jacket 21 through the cylinder cover water passage 22, absorbs the heat of the cylinder body 2 and then flows into the thermal management module 8 through the cylinder cover water passage 32 and, The water storage pot 4 flows back to the water pump 1, the second part of cooling liquid in the thermal management module 8 flows into the engine oil cooler 71 and the transmission oil cooler 72 through the engine oil cooler connector 83 to heat the engine oil, then flows back to the water pump 1, the third part of cooling liquid in the thermal management module 8 flows into the heating and ventilation 5 through the heating and ventilation connector 85 to exchange heat, then flows back to the water pump 1, and the cooling liquid in the radiator 6 does not participate in circulating flow. The working condition is that the temperature is raised to the temperature which can influence the reliability of the cylinder body 2 or can cause knocking under the warm-up working condition, the coolant in the radiator 6 is kept not to flow, the channel of the cylinder body water jacket 21 is opened, the coolant in the cylinder body water jacket 21 participates in circulation, the reliability of the cylinder body 2 is improved, and the knocking caused by overhigh temperature of the cylinder body coolant in the engine is avoided. Under the working condition, the engine controller can also control the motor driving module 87 to drive the motor 88 to rotate according to the temperature of the coolant detected by the first temperature sensor 9, the motor 88 drives the control valve 80 to rotate, and the control valve 80 adjusts the connection area of the water channel interface 84 and the heating and ventilation interface 85 of the cylinder cover, so as to adjust the flow rate of the coolant flowing out of the cylinder water jacket 21 and the flow rate of the coolant flowing into the heating and ventilation 5.
As shown in fig. 8, when the engine is in a high-temperature operating condition, the engine controller controls the motor driving module 87 to drive the motor 88 to rotate, the motor 88 drives the control valve 80 to rotate, the control valve 80 makes the connection areas of the cylinder cover water passage port 84 and the heating and ventilation port 85 both be 100% (i.e. the cylinder cover water passage port 84 and the heating and ventilation port 85 are connected), and makes the connection area of the radiator port 86 gradually change from 0 to 100% (i.e. the radiator port 86 is connected), the cooling liquid flows out of the water pump 1, a part of the cooling liquid flows into the cylinder cover water jacket 31 through the cylinder body water passage 22, absorbs the heat of the cylinder cover 3 and flows into the thermal management module 8 through the cylinder cover water passage port 81, the other part of the cooling liquid flows into the cylinder body water jacket 21 through the cylinder body water passage 22, absorbs the heat of the cylinder body 2 and flows into the thermal management module 8 through the cylinder cover water passage port 32, The water storage pot 4 flows back to the water pump 1, the second part of cooling liquid in the thermal management module 8 flows into the engine oil cooler 71 and the transmission oil cooler 72 through the engine oil cooler connector 83 to heat engine oil, then flows back to the water pump 1, the third part of cooling liquid in the thermal management module 8 flows into the heating and ventilation 5 through the heating and ventilation connector 85 to exchange heat, then flows back to the water pump 1, the fourth part of cooling liquid in the thermal management module 8 flows into the radiator 6 through the radiator connector 86 to dissipate heat, and one part of cooling liquid after heat dissipation flows back to the water pump 1 and the other part of cooling liquid flows into the water storage pot 4. The working condition is that when the working condition of the heat engine is heated to the temperature which cannot be cooled only by small circulation, the radiator 6 is opened to enable cooling liquid to flow in the radiator 6, the temperature of a cooling system is reduced, the engine works in a proper temperature range, and the reliability of the engine is improved. In this operating condition, the engine controller may also control the motor driving module 87 to drive the motor 88 to rotate according to the temperatures of the coolant detected by the first temperature sensor 9 and the second temperature sensor 10, the motor 88 drives the control valve 80 to rotate, and the control valve 80 adjusts the connection areas of the water passage port 84, the heating and ventilation port 85, and the radiator port 86 of the cylinder head, so as to adjust the flow rate of the coolant flowing out of the cylinder water jacket 21, the flow rate of the coolant flowing into the heating and ventilation 5, and the flow rate of the coolant flowing into the radiator 6.
Claims (4)
1. An automobile engine cooling system comprises a water pump (1), a cylinder body (2), a cylinder cover (3), a water storage pot (4), a heating pipe (5), a radiator (6) and an engine oil cooler, wherein a cylinder body water jacket (21) and a cylinder body water passage (22) are arranged on the cylinder body (2), and a cylinder cover water jacket (31) and a cylinder cover water passage (32) are arranged on the cylinder cover (3); the method is characterized in that: the heat management device is characterized by further comprising a heat management module (8), wherein the heat management module (8) is provided with a control valve (80), a normally-open cylinder cover water jacket interface (81), a water storage kettle interface (82), an engine oil cooler interface (83), a cylinder cover water passage interface (84), a heating and ventilation interface (85) and a radiator interface (86), and the connection area of the cylinder cover water passage interface, the heating and ventilation interface and the radiator interface can be adjusted through the control valve; the water inlet of cylinder body water course (22) is connected to the delivery port of water pump (1), and the water inlet of cylinder cover water jacket (31) is connected to the first delivery port of cylinder body water course (22), and the water inlet of cylinder body water jacket (21) is connected to the second delivery port of cylinder body water course (22), and the water inlet of cylinder cover water course (32) is connected to the delivery port of cylinder body water jacket (21), and the delivery port of cylinder cover water course (32) is connected to the delivery port of cylinder cover water jacket (31) the water course interface (84) is passed to the cylinder cover, and the delivery port of cylinder cover water jacket (31) is connected cylinder cover water jacket interface (81), the first water inlet of retaining kettle (4) is connected in retaining kettle's (82), and the first water inlet of water pump (1) is connected to the delivery port of retaining kettle (4), the water inlet of warm expert interface (85) connection warm expert (5), and the second water inlet of water pump (1) is connected to the delivery port of warm expert (5 The engine oil cooler interface (83) is connected with water inlets of an engine oil cooler (71) and a transmission oil cooler (72), water outlets of the engine oil cooler (71) and the transmission oil cooler (72) are connected with a second water inlet of the water pump (1), the radiator interface (86) is connected with a water inlet of the radiator (6), a first water outlet of the radiator (6) is connected with a third water inlet of the water pump (1), and a second water outlet of the radiator is connected with a second water inlet of the water storage kettle (4).
2. The automotive engine cooling system of claim 1, characterized in that: the engine heat management device is characterized in that a first temperature sensor (9) is arranged on the heat management module (8) corresponding to the position of the cylinder cover water jacket interface (81), a second temperature sensor (10) is arranged at the first water outlet position of the radiator (6), the first temperature sensor (9) and the second temperature sensor (10) are electrically connected with an engine controller, and the detected temperature of cooling liquid is sent to the engine controller.
3. The automotive engine cooling system according to claim 2, characterized in that: be equipped with motor drive module (87) on thermal management module (8), motor (88) and angular position sensor (89), motor drive module (87), angular position sensor (89) are connected with the engine controller electricity, motor (88) are connected with motor drive module (87) electricity, the output shaft and control valve (80) location of motor (88) are connected, angular position sensor sends the current angle of the control valve that detects for engine controller, engine controller drives the motor drive motor and drives the control valve rotation according to the current angle control motor of coolant temperature, engine running condition and control valve, the control valve adjusts the cylinder cap and passes through the area of contact of water course interface and/or warm logical interface and/or radiator interface.
4. A method of cooling an engine using the automotive engine cooling system of any one of claims 1 to 3, comprising:
When the engine is in a cold start working condition, the connecting areas of a cylinder cover water passage interface (84), a heating and ventilation interface (85) and a radiator interface (86) are all 0, cooling liquid flows out of the water pump (1), flows into a cylinder cover water jacket (31) through a cylinder body water passage (22), absorbs heat of a cylinder cover (3), flows into the thermal management module (8) through the cylinder cover water jacket interface (81), part of cooling liquid in the thermal management module (8) flows back to the water pump (1) through the water storage kettle interface (82) and the water storage kettle (4), the other part of cooling liquid in the thermal management module (8) flows into an engine oil cooler through the engine oil cooler interface (83), heats engine oil, then flows back to the water pump (1), and cooling liquid in the cylinder body water jacket (21), the heating and ventilation (5) and the radiator (6) does not participate in circulating flow;
When the engine is in a warming working condition, the connecting areas of a cylinder cover water passage interface (84) and a radiator interface (86) are 0, the connecting area of a warming and ventilating interface (85) is changed from 0 to 100%, cooling liquid flows out of a water pump (1), flows into a cylinder cover water jacket (31) through a cylinder body water passage (22), absorbs heat of a cylinder cover (3), flows into a thermal management module (8) through a cylinder cover water jacket interface (81), a first part of cooling liquid in the thermal management module (8) flows into an engine oil cooler through an engine oil cooler interface (83), heats engine oil and then flows back to the water pump (1), a third part of cooling liquid in the thermal management module (8) flows into a warming and ventilating device (5) through the warming and ventilating interface (85) and exchanges heat, then the cooling liquid flows back to the water pump (1), and the cooling liquid in the cylinder water jacket (21) and the radiator (6) does not participate in the circulating flow;
when the engine is in a heat engine working condition, the connecting area of a radiator interface (86) is 0, the connecting area of a heating and ventilation interface (85) is 100%, the connecting area of a cylinder cover water channel interface (84) is changed from 0 to 100%, cooling liquid flows out of a water pump (1), one part of the cooling liquid flows into a cylinder cover water jacket (31) through a cylinder body water channel (22), the cooling liquid absorbs heat of a cylinder cover (3) and then flows into a heat management module (8) through the cylinder cover water channel interface (81), the other part of the cooling liquid flows into a cylinder body water jacket (21) through the cylinder body water channel (22), the heat of a cylinder body (2) is absorbed and then flows into the heat management module (8) through a cylinder cover water channel interface (32) and the cylinder cover water channel interface (84), a first part of the cooling liquid in the heat management module (8) flows back to the water pump (1) through a water storage pot interface (82) and a water storage pot (4), a second part of the cooling liquid in the heat management module (8), the engine oil is heated and then flows back to the pump (1), the third part of cooling liquid in the thermal management module (8) flows into the heating and ventilating device (5) through the heating and ventilating interface (85) and carries out heat exchange, then flows back to the pump (1), and the cooling liquid in the radiator (6) does not participate in circulating flow;
When the engine is in a high-temperature working condition, the connecting areas of a cylinder cover water passage interface (84) and a heating and ventilation interface (85) are both 100 percent, the connecting area of a radiator interface (86) is changed from 0 to 100 percent, cooling liquid flows out from a water pump (1), one part of the cooling liquid flows into a cylinder cover water jacket (31) through a cylinder body water passage (22), the cooling liquid absorbs heat of a cylinder cover (3) and then flows into a thermal management module (8) through a cylinder cover water jacket interface (81), the other part of the cooling liquid flows into a cylinder body water jacket (21) through a cylinder body water passage (22), the cooling liquid absorbs heat of a cylinder body (2) and then flows into the thermal management module (8) through a cylinder cover water passage interface (32) and a cylinder cover water passage interface (84), a first part of the cooling liquid in the thermal management module (8) flows back to the water pump (1) through a water storage kettle interface (82) and a water storage kettle (4), and a second part of the cooling liquid in the thermal, the engine oil is heated and then flows back to the pump (1), the third part of cooling liquid in the thermal management module (8) flows into the heating and ventilating device (5) through the heating and ventilating interface (85) and carries out heat exchange, then flows back to the pump (1), the fourth part of cooling liquid in the thermal management module (8) flows into the radiator (6) through the radiator interface (86) and carries out heat dissipation, and one part of cooling liquid after heat dissipation flows back to the pump (1) and the other part of cooling liquid flows into the water storage pot (4).
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| CN109057943B (en) * | 2018-08-23 | 2020-11-03 | 重庆长安汽车股份有限公司 | Mutually independent engine double-circulation cooling system |
| CN109057941A (en) * | 2018-08-23 | 2018-12-21 | 重庆长安汽车股份有限公司 | A kind of mutually independent engine high/low temperature cooling system |
| CN109057942B (en) * | 2018-08-23 | 2020-10-16 | 重庆长安汽车股份有限公司 | Cooling system for increasing warming speed and reducing oil consumption |
| CN109139224A (en) * | 2018-08-23 | 2019-01-04 | 重庆长安汽车股份有限公司 | A kind of engine dual cycle cooling system |
| CN109139219A (en) * | 2018-08-23 | 2019-01-04 | 重庆长安汽车股份有限公司 | A kind of engine-cooling system |
| CN111022141B (en) * | 2019-12-31 | 2021-07-06 | 宁波吉利罗佑发动机零部件有限公司 | Extended-range thermal management system, thermal management method and vehicle |
| CN111365113A (en) * | 2020-03-26 | 2020-07-03 | 重庆长安汽车股份有限公司 | Engine cooling system thermal management module and engine cooling system |
| CN115370458B (en) * | 2021-05-18 | 2023-08-15 | 广州汽车集团股份有限公司 | Engine cooling system, method, vehicle control system, vehicle and storage medium |
| CN114526148A (en) * | 2022-02-15 | 2022-05-24 | 中国重汽集团济南动力有限公司 | Engine heat management valve control system and method, engine and automobile |
| CN115013114A (en) * | 2022-06-13 | 2022-09-06 | 潍柴动力股份有限公司 | Engine preheating system and method |
| CN115247596A (en) * | 2022-06-24 | 2022-10-28 | 东风汽车集团股份有限公司 | Control method of engine thermal management system |
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| JP3644262B2 (en) * | 1998-07-29 | 2005-04-27 | 株式会社デンソー | Cooling device for liquid-cooled internal combustion engine |
| CN204646399U (en) * | 2015-02-27 | 2015-09-16 | 上海通用汽车有限公司 | A kind of engine-cooling system and motor |
| JP6488970B2 (en) * | 2015-09-30 | 2019-03-27 | アイシン精機株式会社 | Cooling control device |
| CN206205976U (en) * | 2016-10-27 | 2017-05-31 | 比亚迪股份有限公司 | A kind of engine-cooling system |
| CN206429294U (en) * | 2017-01-25 | 2017-08-22 | 安徽江淮汽车集团股份有限公司 | A kind of cooling system of automotive gasoline engine |
| CN107165715B (en) * | 2017-07-20 | 2019-09-24 | 安徽江淮汽车集团股份有限公司 | A kind of cooling system of vehicle |
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