CN111779562A - Engine cooling system and method - Google Patents
Engine cooling system and method Download PDFInfo
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- CN111779562A CN111779562A CN202010583424.0A CN202010583424A CN111779562A CN 111779562 A CN111779562 A CN 111779562A CN 202010583424 A CN202010583424 A CN 202010583424A CN 111779562 A CN111779562 A CN 111779562A
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- 238000001816 cooling Methods 0.000 title claims abstract description 41
- 238000000034 method Methods 0.000 title claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 201
- 230000008569 process Effects 0.000 claims description 3
- 230000000630 rising effect Effects 0.000 claims description 2
- 230000010354 integration Effects 0.000 claims 1
- 230000001105 regulatory effect Effects 0.000 abstract description 3
- 230000007547 defect Effects 0.000 abstract description 2
- 238000013021 overheating Methods 0.000 abstract 1
- 230000008859 change Effects 0.000 description 18
- 230000033228 biological regulation Effects 0.000 description 7
- 239000001993 wax Substances 0.000 description 7
- 239000002826 coolant Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000002347 injection Methods 0.000 description 5
- 239000007924 injection Substances 0.000 description 5
- 239000000446 fuel Substances 0.000 description 4
- 230000017525 heat dissipation Effects 0.000 description 3
- 239000000110 cooling liquid Substances 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 239000012188 paraffin wax Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000000476 body water Anatomy 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- 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
- 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
- F01P3/18—Arrangements or mounting of liquid-to-air heat-exchangers
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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
- F01P7/02—Controlling of coolant flow the coolant being cooling-air
- F01P7/10—Controlling of coolant flow the coolant being cooling-air by throttling amount of air flowing through liquid-to-air heat exchangers
- F01P7/12—Controlling of coolant flow the coolant being cooling-air by throttling amount of air flowing through liquid-to-air heat exchangers by thermostatic control
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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
- F01P7/164—Controlling of coolant flow the coolant being liquid by thermostatic control by varying pump speed
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
The invention belongs to the technical field of engines, in particular to an engine cooling system and an engine cooling method, which comprises an electromagnetic clutch water pump, an engine body, a temperature adjusting device and a water tank, wherein water paths are sequentially connected end to form cooling circulation; two water outlets of the temperature adjusting device are respectively communicated with the water tank and the electromagnetic clutch water pump to respectively form engine major cycle and engine minor cycle, the temperature adjusting device comprises a shell, and a first temperature adjuster and a second temperature adjuster which are contained in the shell, the first temperature adjuster and the second temperature adjuster are arranged in a water path in parallel, an outlet water path of the first temperature adjuster and an outlet water path of the second temperature adjuster are converged into one path to be connected to the water tank, and the electromagnetic clutch water pump is set to be 2 or 3 working gears. The invention adopts the structural cooperation of the two-stage or three-stage temperature regulator and the multi-stage electromagnetic clutch water pump to regulate the circulation flow of the engine, achieves the purpose of regulating the temperature of the outlet water, just aims to compensate the original defects by regulating the temperature, can meet the requirement of quickly improving the temperature of the outlet water during starting, and also prevents overheating.
Description
Technical Field
The invention belongs to the technical field of engines, and particularly relates to an engine cooling system and an engine cooling method.
Background
With the increasing energy-saving requirement of the engine, the engine is required to maintain a proper working temperature. Conventional engine temperature control systems typically use a thermostat to control the temperature of the outgoing water.
The temperature range adjustable by the existing single-dependence temperature regulator is not wide enough, and the vehicle warming time is long in cold areas. The water-air cooling system disclosed in chinese patent CN109184895A comprises an engine water pump, a low temperature water tank, an engine internal circulation system and an air water cooler, wherein the engine internal circulation system comprises an oil cooler, a body and a cylinder head, a thermostat and an engine high temperature water tank, when the temperature of water entering the thermostat is higher than the opening temperature of the thermostat, the engine large circulation is opened, the engine small circulation is closed, water directly flows back to the high temperature water tank, enters the water pump after being cooled by a radiator in the high temperature water tank, when the temperature of water entering the thermostat is lower than the opening temperature of the thermostat, the engine small circulation is opened, the engine large circulation is closed, and water directly enters the water pump without passing through the high temperature water tank.
And cannot adapt to the rapidly changing requirements of different loads. The traditional engine water pump can only change along with the change of the rotating speed of the engine and can not change along with the change of load and water temperature.
Therefore, in the prior art, there is also an engine cooling method using two thermostat methods, such as an explosion-proof diesel engine warming-up cooling system disclosed in chinese patent CN204627730U, in which water paths from the right bank and the left bank of the crankcase are collected into one and connected to the thermostat housing; the third branch is connected to a water air cooler which is connected to the thermostat shell; two temperature-saving valves in the thermostat are connected with a radiator for cooling the engine body through a water path.
Also for example, chinese patent CN206625887U discloses a thermostat for an engine, which comprises a thermostat base, a thermostat cover, and two thermostats. The thermostat base is provided with a cylinder cover water inlet cavity and a low-temperature water cavity, and two thermostat holes are formed in the thermostat base; the low-temperature water cavity is provided with two water outlet holes and a machine body water outlet. Two thermostats are installed respectively in the thermostat hole, and the thermostat has and closes the thermostat hole and open the first position of apopore and open the second position of thermostat hole and close the apopore.
As another example, the cooling system and method disclosed in chinese patent CN107044332B are an internal combustion engine that employs dual heat exchangers respectively disposed in a high-temperature branch and a low-temperature branch, and internal coolant is heated by an engine body and then divided into a first internal coolant branch and a second internal coolant branch: the first internal cooling liquid branch comprises a first thermostat, an auxiliary heat exchanger and a high-temperature intercooler; the second internal cooling liquid branch comprises a second thermostat, a main heat exchanger and a low-temperature-level intercooler; the internal coolant passing through the first internal coolant branch and the second internal coolant branch joins and returns to the engine block to form a closed cooling circuit.
Above-mentioned prior art adopts two thermostat structures, still exists not enoughly, and when adopting two thermostats to be in the state of difference, the flow that the water pump need supply is different, and above-mentioned prior art adopts quantitative water pump, hardly satisfies under the different engine load operating mode with thermostat combination matching work, reaches better cooling effect.
Disclosure of Invention
The invention discloses an engine cooling system and method, which adopt the structural cooperation of a two-stage temperature regulator and a multi-stage electromagnetic clutch water pump to regulate the circulation flow of an engine so as to achieve the purpose of regulating the temperature of outlet water, and the regulation temperature just aims to compensate the original defects, thereby not only meeting the requirement of quickly improving the temperature of the outlet water during starting, but also preventing the engine from being overheated under heavy load.
The technical scheme of the invention is as follows:
an engine cooling system comprises an electromagnetic clutch water pump, an engine body, a temperature adjusting device and a water tank, wherein water paths are sequentially connected end to form a cooling cycle; two delivery ports of the temperature adjusting device are respectively communicated with the water tank and the electromagnetic clutch water pump to respectively form engine major cycle and engine minor cycle, the temperature adjusting device comprises a shell and a first temperature adjuster and a second temperature adjuster which are contained in the shell, the first temperature adjuster and the second temperature adjuster are connected in parallel in a water path, the first temperature adjuster and an outlet water path of the second temperature adjuster are converged into one path to be connected to the water tank, and the electromagnetic clutch water pump is set to be 2 or 3 working gears.
The invention adopts the electromagnetic clutch water pump with a plurality of gears, the water pump can change along with the change of load and water temperature, and the clutch is respectively controlled to work at a first gear, a second gear and a third gear according to the water temperature and the load of an engine; the circulating flow of the engine is adjusted to achieve the purpose of adjusting the temperature of the outlet water;
the first thermostat and the second thermostat are in thermostat structures, the two combined thermostats are adopted, the water temperature adjusting range is wide, the temperature adjusting range is enlarged, and the engine thermostat can meet the more severe requirement of sudden change working conditions of the engine.
The combined thermostat technology of the invention has the advantages of less change to the thermostat and the engine, less cost change, capability of meeting the requirements of saving oil and reducing consumption by increasing the water outlet temperature of the engine, and no other faults caused by the requirement.
Preferably, the first thermostat and the second thermostat are wax thermostats. Among the parts of the wax type thermostat, the body is the core part of the thermostat, and the water temperature is sensed by the body. When the temperature rises, the temperature sensing wax in the body is heated to expand to push the push rod to move, and the push rod is fixed at the top of the valve seat, so that the body is pushed reversely to move, the body drives the valve to move, and the temperature regulator is started. The structure is simple and the cost is low.
Preferably, the invention also comprises a water temperature sensor arranged at the water inlet of the shell, and the water temperature sensor and the electromagnetic clutch water pump are connected with the engine ECU through wires. The water temperature sensor is used for collecting the water outlet temperature of the engine body, then transmitting data to the engine ECU for processing and then sending an instruction to the electromagnetic clutch water pump, and the engine ECU is adopted to control the electromagnetic clutch water pump to shift gears, so that accurate control can be achieved, and the working reliability of the cooling system is ensured.
Preferably, the initial opening temperature of the first thermostat is 83 ℃, the full opening temperature of the first thermostat is 93 ℃, the initial opening temperature of the second thermostat is 88 ℃, and the full opening temperature of the second thermostat is 98 ℃. The combined design of the main and auxiliary temperature regulators with different opening temperatures is adopted, so that the control range is enlarged from 10 ℃ to 15 ℃, the temperature regulation range is enlarged, and the method can meet the more severe requirement of the sudden change working condition of the engine.
In addition, the invention also discloses a cooling method of the engine, the cooling system of the engine is adopted, the electromagnetic clutch water pump is set to be 3 working gears, and the cooling method comprises the following steps:
step 1: after the engine is started, the electromagnetic clutch water pump can obtain an instruction of an engine ECU (electronic control Unit), a first gear is engaged, the temperature adjusting device is not started at the moment, and the engine is cooled by adopting a small circulation mode;
step 2: when the water temperature rises and reaches 60 ℃, an engine ECU acquires and processes the temperature data of the water temperature sensor, and sends an instruction to the electromagnetic clutch water pump, and the electromagnetic clutch water pump enters two gears from the first gear for meshing;
step 3: along with the rising of water temperature, when the water temperature reaches 75 ℃, an engine ECU sends a command to the electromagnetic clutch water pump, the electromagnetic clutch water pump is raised from a second gear to a third gear, and the electromagnetic clutch water pump reaches a full-meshing state;
step 4: the water temperature continues to rise, when the water temperature reaches 83 ℃, the first temperature regulator starts to be opened, and the large circulation cooling is started;
step 5: the water temperature continuously rises to 88 ℃, and the second temperature regulator starts to be opened;
step 6: along with the continuous increase of the engine load, the water temperature continuously rises to 95 ℃, and the engine ECU controls the radiating fan to start working to keep the water temperature stable in a balanced state. In this state the radiator fan will maintain the wind on-off-on-off mode of operation.
If the water temperature is too high, the heat dissipation fan cannot be balanced even if the heat dissipation fan works at full speed. When the water temperature reaches a certain set value, an alarm is given, if the water temperature exceeds a certain set value, the fuel injection quantity is reduced if the water temperature reaches 105 ℃, further deterioration is prevented, even the cylinder pulling fault occurs, the fuel injection is recovered when the water temperature is reduced to 102 ℃, and then the step6 is entered. Thereby achieving the purpose of protecting the engine.
The invention has the beneficial effects that:
1. the electromagnetic clutch water pump 1 with a plurality of gears is adopted, the water pump can change along with the change of load and water temperature, and the clutch is respectively controlled to work at a first gear, a second gear and a third gear according to the water temperature and the load of an engine; the circulating flow of the engine is adjusted to achieve the purpose of adjusting the temperature of the outlet water;
2. the two combined temperature regulators are adopted, so that the water temperature regulation range is wide, the temperature regulation range is enlarged, and the requirements of more severe sudden change working conditions of the engine can be met.
3. The engine is changed a little, the cost change is also little, the requirement of improving the water outlet temperature of the engine to save oil and reduce consumption can be met, and other faults can not be caused.
Drawings
FIG. 1 is a schematic illustration of an engine cooling system according to the present invention.
FIG. 2 is a schematic view of the structure of the thermostat of the present invention
FIG. 3 is a schematic diagram showing the relationship between the input rotation speed of the electromagnetic clutch water pump in 3 different gears and the rotation speed of the water pump.
Fig. 4 is a schematic structural diagram of a first thermostat and a second thermostat according to the present invention, which are wax thermostat structures.
Fig. 5 is a schematic diagram of the operation of the thermostat device of embodiment 3 of the present invention in a small cycle when not opened.
Fig. 6 is a schematic diagram of the operation of the first thermostat in embodiment 3 of the present invention when it is on, which is in a large cycle condition.
Fig. 7 is a schematic diagram of the operation of the first thermostat and the second thermostat of embodiment 3 of the present invention when both are on, which is in a large cycle condition.
In the figure: 1-an electromagnetic clutch water pump, 2-an engine body, 3-a temperature adjusting device, 301-a shell, 302-a first temperature adjuster, 303-a second temperature adjuster, 4-a water tank, 5-a water temperature sensor, 6-an engine ECU and 7-a cooling fan.
Detailed Description
The invention is further described with reference to the following figures and detailed description.
Example 1:
as shown in fig. 1, an engine cooling system comprises an electromagnetic clutch water pump 1, an engine body 2, a temperature adjusting device 3 and a water tank 4, wherein water paths are sequentially connected end to form a cooling cycle; two water outlets of the temperature adjusting device 3 are respectively communicated with the water tank 4 and the electromagnetic clutch water pump 1 to respectively form a large engine cycle and a small engine cycle,
as shown in fig. 2, the temperature adjusting device 3 includes a housing 301, and a first temperature adjuster 302 and a second temperature adjuster 303 accommodated in the housing 301, the first temperature adjuster 302 and the second temperature adjuster 303 are arranged in a water path in parallel, outlet water paths of the first temperature adjuster 302 and the second temperature adjuster 303 are collected into a path and connected to the water tank 4, and the electromagnetic clutch water pump 1 is set to 3 operating gears. In this embodiment, the electromagnetic clutch water pump 1 adopts the electromagnetic clutch to control the flow of the water pump so as to achieve the purpose of controlling the flow of the engine. According to the water temperature and the engine load, the clutch is respectively controlled to work in the first gear, the second gear and the third gear.
The embodiment adopts the electromagnetic clutch water pump 1 with a plurality of gears, the water pump can change along with the change of load and water temperature, and the clutch is respectively controlled to work at a first gear, a second gear and a third gear according to the water temperature and the load of an engine; the circulating flow of the engine is adjusted to achieve the purpose of adjusting the temperature of the outlet water;
the two combined temperature regulators are adopted, so that the water temperature regulation range is wide, the temperature regulation range is enlarged, and the requirements of more severe sudden change working conditions of the engine can be met.
Example 2:
as shown in fig. 1 and 2, the embodiment is applied to an in-line 6-cylinder diesel engine, and the engine cooling system comprises an electromagnetic clutch water pump 1, an engine body 2, a temperature adjusting device 3 and a water tank 4, wherein water paths are sequentially connected end to form a cooling cycle; two water outlets of the temperature adjusting device 3 are respectively communicated with the water tank 4 and the electromagnetic clutch water pump 1 to respectively form a large engine cycle and a small engine cycle, the temperature adjusting device 3 comprises a shell 301, and a first temperature adjuster 302 and a second temperature adjuster 303 which are accommodated in the shell 301,
as shown in fig. 2, the first thermostat 302 and the second thermostat 303 are arranged in a water path in parallel, outlet water paths of the first thermostat 302 and the second thermostat 303 are converged into one path and connected to the water tank 4, and the electromagnetic clutch water pump 1 is set to 3 working gears.
In this embodiment, the electromagnetic clutch water pump 1 is indirectly connected with the power of the engine crankshaft, specifically:
the electromagnetic clutch water pump 1 structurally comprises a shell, a water pump belt pulley, a water pump impeller group, a water pump main shaft and an electromagnetic clutch, wherein the water pump belt pulley is directly in power connection with an engine through an engine crankshaft belt pulley, a middle wheel can be additionally arranged in the middle of the water pump belt pulley, the electromagnetic clutch comprises an electromagnetic coil, a friction plate, a driving disc, a spring piece and a control power supply, the electromagnetic coil is positioned in the water pump belt pulley and is connected with the control power supply, and the electromagnetic coil is fixedly arranged on the shell; the friction plate is connected with the driving disc through the spring piece, the driving disc is connected with one end of the water pump main shaft, the other end of the water pump main shaft extends into the shell to be connected with the water pump impeller set, gear switching of the electromagnetic clutch water pump 1 is achieved through the electromagnetic clutch, and the relation between the input and output rotating speed and the water pump rotating speed of the electromagnetic clutch water pump 1 in different gears is shown in figure 3.
As shown in fig. 4, in the present embodiment, the first thermostat 302 and the second thermostat 303 are wax thermostats, and the product is purchased from carparts manufacturing ltd. The first thermostat and the second thermostat are structurally as follows: the paraffin wax injection device comprises a shell, a spring, a valve and the like, wherein paraffin wax is arranged in the shell, the spring is sleeved on the shell, and the valve is arranged on the shell. Among the parts of the wax type thermostat, the body is the core part of the thermostat, and the water temperature is sensed by the body. When the temperature rises, the temperature sensing wax in the body is heated to expand to push the push rod to move, and the push rod is fixed at the top of the valve seat, so that the body is pushed reversely to move, the body drives the valve to move, and the temperature regulator is started. The structure is simple and the cost is low.
The present embodiment further includes a water temperature sensor 5 disposed at the water inlet of the housing 301, and the water temperature sensor 5 and the electromagnetic clutch water pump 1 are both connected to the engine ECU6 through wires. The engine ECU6 is adopted to control the electromagnetic clutch water pump 1 to shift gears, so that accurate control can be achieved, and the working reliability of the cooling system is ensured.
In this embodiment, the initial opening temperature of the first thermostat 302 is 83 ℃, the full opening temperature of the first thermostat 302 is 93 ℃, the initial opening temperature of the second thermostat 303 is 88 ℃, and the full opening temperature of the second thermostat 303 is 98 ℃. The combined design of the main and auxiliary temperature regulators with different opening temperatures is adopted, so that the control range is enlarged from 10 ℃ to 15 ℃, the temperature regulation range is enlarged, and the method can meet the more severe requirement of the sudden change working condition of the engine.
Example 3:
the present embodiment is a cooling method of the cooling system of embodiment 2 described above:
step 1: after the engine is started, the electromagnetic clutch water pump 1 can obtain a command of an engine ECU6, a first gear is engaged, the temperature adjusting device 3 is not started at the moment, the engine adopts small circulation cooling as shown in FIG. 5, and the electromagnetic clutch water pump 1 runs at a first speed;
step 2: when the water temperature rises and reaches 60 ℃, the engine ECU6 collects and processes the temperature data of the water temperature sensor 5 and sends a command to the electromagnetic clutch water pump 1, the electromagnetic clutch water pump 1 enters two gears from the first gear for meshing, and the electromagnetic clutch water pump 1 runs at the second gear;
step 3: when the water temperature rises to 75 ℃, the engine ECU6 sends a command to the electromagnetic clutch water pump 1, the electromagnetic clutch water pump 1 rises from the second gear to the third gear, and the electromagnetic clutch water pump 1 reaches a full-meshing state, namely a full-speed state.
step 4: as shown in fig. 6, the engine ECU6 continues to acquire the signal of the water temperature sensor 5, and when the water temperature reaches 83 ℃, the first thermostat 302 starts to be opened, the large circulation cooling is started, and the first thermostat 302 is fully opened after the temperature rises to 93 ℃;
step 5: as shown in fig. 7, the water temperature continuously rises to 88 ℃, the second thermostat 303 starts to be opened, and the second thermostat 303 is fully opened after the temperature rises to 98 ℃;
step 6: the electronic control engine judges whether the engine works normally according to the water temperature of the engine, the water temperature continuously rises to 95 ℃ along with the continuous increase of the load of the engine, and the engine ECU6 controls the radiating fan 7 to start working to keep the water temperature stable in a balance state. In this state the radiator fan 7 will maintain the wind on-off-on-off mode of operation. If the water temperature is too high, the heat dissipation fan 7 cannot be balanced even when operating at full speed. When the water temperature reaches a certain set value, an alarm is given, the fuel injection quantity is reduced when the water temperature reaches 105 ℃, further deterioration is prevented, even cylinder pulling faults occur, fuel injection is recovered when the water temperature is reduced to 102 ℃, and the step6 is entered. Thereby achieving the purpose of protecting the engine.
Example 4:
this embodiment is different from embodiment 1 described above in that: in this embodiment, the electromagnetic clutch water pump 1 is a 2-gear structure, and the clutch is controlled to be in the first gear and the second gear respectively according to the water temperature and the engine load.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (5)
1. An engine cooling system, characterized in that: the engine comprises an electromagnetic clutch water pump (1), an engine body (2), a temperature adjusting device (3) and a water tank (4), wherein water paths are sequentially connected end to form a cooling cycle; two delivery ports of attemperator (3) respectively with water tank (4) with electromagnetic clutch water pump (1) is linked together to form engine major cycle and engine minor cycle respectively, attemperator (3) include casing (301) and hold first thermoregulator (302) and second thermoregulator (303) in casing (301), first thermoregulator (302) with second thermoregulator (303) are parallelly connected to be set up in the water route, first thermoregulator (302) with the export water route integration of second thermoregulator (303) is connected to all the way water tank (4), electromagnetic clutch water pump (1) is for setting up to 2 or 3 work gears.
2. An engine cooling system according to claim 1, characterized in that: the first thermostat (302) and the second thermostat (303) are both wax thermostats.
3. An engine cooling system according to claim 1 or 2, characterized in that: the water temperature sensor (5) is arranged at a water inlet of the shell (301), and the water temperature sensor (5) and the electromagnetic clutch water pump (1) are connected with an engine ECU (6) through wires.
4. An engine cooling system according to claim 1 or 2, characterized in that: the initial opening temperature of the first temperature regulator (302) is 83 ℃, the full opening temperature of the first temperature regulator (302) is 93 ℃, the initial opening temperature of the second temperature regulator (303) is 88 ℃, and the full opening temperature of the second temperature regulator (303) is 98 ℃.
5. A cooling method of an engine, characterized in that: an engine cooling system as claimed in claim 3 or 4, wherein the electromagnetic clutch water pump (1) is set to 3 working gears, and comprises the following steps:
step 1: after the engine is started, the electromagnetic clutch water pump (1) can obtain an instruction of an engine ECU (6), a first gear is engaged, the temperature adjusting device (3) is not started at the moment, and the engine is cooled by adopting a small circulation;
step 2: when the water temperature rises and reaches 60 ℃, an engine ECU (6) collects and processes temperature data of a water temperature sensor (5), and sends an instruction to the electromagnetic clutch water pump (1), and the electromagnetic clutch water pump (1) enters two gears for meshing from the first gear;
step 3: along with the rising of water temperature, when the water temperature reaches 75 ℃, an engine ECU (6) sends an instruction to the electromagnetic clutch water pump (1), the electromagnetic clutch water pump (1) rises from a second gear to a third gear, and the electromagnetic clutch water pump (1) reaches a full-meshing state;
step 4: the water temperature continues to rise, when the water temperature reaches 83 ℃, the first temperature regulator (302) starts to be opened, and the large circulation cooling is started;
step 5: the water temperature continuously rises to 88 ℃, and the second temperature regulator (303) starts to be opened;
step 6: along with the continuous increase of the engine load, the water temperature continuously rises to 95 ℃, and the engine ECU (6) controls the radiating fan (7) to start working, so that the water temperature is kept stable in a balance state.
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| CN202010583424.0A CN111779562A (en) | 2020-06-23 | 2020-06-23 | Engine cooling system and method |
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| CN202010583424.0A CN111779562A (en) | 2020-06-23 | 2020-06-23 | Engine cooling system and method |
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2020
- 2020-06-23 CN CN202010583424.0A patent/CN111779562A/en active Pending
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| JPH10317967A (en) * | 1997-05-16 | 1998-12-02 | Nippon Thermostat Kk | Cooling controller for internal combustion engine |
| JP2013100724A (en) * | 2011-11-07 | 2013-05-23 | Isuzu Motors Ltd | Cooling device and cooling method of internal combustion engine |
| CN202348708U (en) * | 2011-11-18 | 2012-07-25 | 广西玉柴机器股份有限公司 | Water pump of engine electromagnetic clutch |
| CN202832753U (en) * | 2012-06-27 | 2013-03-27 | 陕西法士特齿轮有限责任公司 | Twin-core thermostat for finished automobile cooling system |
| CN204627730U (en) * | 2015-02-12 | 2015-09-09 | 河北华北柴油机有限责任公司 | Anti-explosion diesel engine warming-up cooling system |
| CN206158840U (en) * | 2016-09-14 | 2017-05-10 | 邵洪明 | Automobile engine cooling circulation system of temperature saver is put to outband |
| CN212671927U (en) * | 2020-06-23 | 2021-03-09 | 广西玉柴机器股份有限公司 | Engine cooling system |
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Application publication date: 20201016 |