CN105422247A - Intelligent cooling system based on split cooling and reverse cooling for engine, and control method - Google Patents
Intelligent cooling system based on split cooling and reverse cooling for engine, and control method Download PDFInfo
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- CN105422247A CN105422247A CN201510970669.8A CN201510970669A CN105422247A CN 105422247 A CN105422247 A CN 105422247A CN 201510970669 A CN201510970669 A CN 201510970669A CN 105422247 A CN105422247 A CN 105422247A
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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
- F01P7/02—Controlling of coolant flow the coolant being cooling-air
- F01P7/04—Controlling of coolant flow the coolant being cooling-air by varying pump speed, e.g. by changing pump-drive gear ratio
- F01P7/048—Controlling of coolant flow the coolant being cooling-air by varying pump speed, e.g. by changing pump-drive gear ratio using electrical drives
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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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- 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
- F01P7/165—Controlling of coolant flow the coolant being liquid by thermostatic control characterised by systems with two or more loops
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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
- F01P7/167—Controlling of coolant flow the coolant being liquid by thermostatic control by adjusting the pre-set temperature according to engine parameters, e.g. engine load, engine speed
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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
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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
- F01P2025/00—Measuring
- F01P2025/08—Temperature
- F01P2025/50—Temperature using two or more temperature sensors
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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
- F01P2037/00—Controlling
- F01P2037/02—Controlling starting
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
The invention discloses an intelligent cooling system based on split cooling and reverse cooling for an engine, and a control method. The cooling system comprises a cylinder cover water jacket, a body water jacket, an electronically-controlled water pump, electronic thermostats, an electronically-controlled fan, a heat dissipater, an expansion water tank, temperature sensors, motors and an electronic control unit. During a working process of the system, the electronically-controlled water pump pumps a cooling liquid in the engine, the first electronic thermostat controls the cooling liquid to enter the cylinder cover water jacket and the body water jacket according to cooling liquid temperature signals of a cylinder cover and a body respectively, flow from top down, and flow out after the cooling the cylinder cover and the body; and the second electronic thermostat distributes the flow rate of the cooling liquid entering large circulation and small circulation according to a cooling liquid temperature of a main tube, and the cooling liquid is circulated and then pumped in the engine to cool. The cooling system disclosed by the invention is capable of accurately distributing the flow rate of the cooling liquid in the cylinder body and the body of the engine, reducing the phenomenon of non-uniform cooling, and shortening the warm-up time of the engine; and the heat states of heated components are optimized through the reverse cooling.
Description
Technical field
The present invention relates to engine intelligent cooling system and controlling method, particularly relate to the engine intelligent cooling system in conjunction with cylinder cap body split cooling technology and reverse cooling technology
Background technique
Along with the continuous lifting of pressure of explosion in diesel engine power density and cylinder, the heated component heat load comprising cylinder cap, cylinder sleeve etc. constantly increases, and its thermal failure case also increases gradually, and the direction that diesel energy-saving reduces discharging simultaneously is trend of the times.So the development of diesel engine is proposed stricter requirement to its reliability, fuel consumption and emission performance, therefore cooling system should provide enough intensity of cooling to ensure its thermal reliability for high thermal load regions, the cooling flow simultaneously reducing lower region, heat load district, to avoid the waste of intensity of cooling, improves its fuel economy with this.
And the mode of integrated water jacket in traditional cooling system, is adopted for the cooling of cylinder cap, cylinder sleeve, cylinder cover water jacket cooling cylinder cap is entered by upper water hole after cooling liquid is introduced into body water jacket cooling cylinder sleeve, and due to cylinder cap heat load, comparatively cylinder sleeve is high, this kind of type of cooling can not the intensity of cooling of independent regulation cylinder cap and cylinder sleeve, therefore can cause the not enough or cylinder sleeve supercooling of Cooling of Cylinder Head.And cooling cylinder cap again after simultaneously cooling liquid first cools cylinder sleeve, cylinder cover water jacket coolant temperature certainly will be caused higher than cylinder sleeve water jacket coolant temperature, and this is also the Reasonable Regulation And Control being unfavorable for cylinder cap, cylinder sleeve intensity of cooling.
Therefore, for the difference of cylinder cap, cylinder sleeve cooling requirement, cylinder cap body split cooling technology obtains research: adopt independent cooling circuit to carry out split cooling respectively to cylinder cap, body and can be undertaken by each cooling circuit uninterrupted of independent regulation and control " accurately cooling ".Research shows, adopts split to cool also reasonable distribution cooling flow and can suitably reduce cylinder cap mean temperature and improve cylinder sleeve mean temperature, reduce complete machine cooling liquid heat dissipation amount and water jacket power consumption, reduce cylinder sleeve-piston friction coefficient thus promote fuel economy; Adopt split cooling to shorten engine warm-up time simultaneously, improve emission performance.On the other hand, reverse cooling technology is adopted by improving key area intensity of cooling, cylinder head plate fire power face thermal stress can be reduced, improve heated component thermal reliability.
Therefore, connected applications cylinder cap-body split cooling technology and reverse cooling technology, it is of great advantage for proposing a kind of lifting of Intelligence Cooling System to the properties of motor based on the two.
Summary of the invention
The object of the invention is to propose a kind of engine intelligent cooling system model cooling based on split and oppositely cool.
A kind of cooling based on motor split comprises electric control pump, the first electric-controlled thermostat, the second electric-controlled thermostat, electrical control electric fan, swelling water tank, cylinder cover water jacket, body water jacket, the first temperature transducer, the second temperature transducer, three-temperature sensor, the first motor, the second motor and electronic control unit with the engine intelligent cooling system oppositely cooled
Described electric control pump and the first electric-controlled thermostat are arranged in cylinder cover water jacket and body water jacket front end, and are installed on engine body, cylinder cap, body water jacket rear end is furnished with the second electric-controlled thermostat, second electric-controlled thermostat is installed on engine cylinder and covers, first outlet of the second electric-controlled thermostat directly connects electric control pump by pipeline, second outlet is divided into two coolant ducts, a coolant duct connects electric control pump through radiator, another coolant duct connects electric control pump after swelling water tank, electrical control electric fan is used for providing forced-convection heat transfer to radiator, first motor drives electrical control electric fan, second motor drives electric control pump, first temperature transducer is arranged on cylinder cover water jacket entrance, second temperature transducer is arranged on body water jacket entrance, three-temperature sensor is arranged on the entrance of the second electric-controlled thermostat, electronic control unit and all temperature transducers, electric-controlled thermostat is connected with motor.
In cylinder cover water jacket, body water jacket, coolant flow direction is from top to bottom.
Cylinder cap and body adopt independently water jacket to cool.
First outlet of the first electric-controlled thermostat connects cylinder cover water jacket, and the second outlet connects body water jacket, before the outlet conduit of cylinder cover water jacket and body water jacket meets at the second electric-controlled thermostat.
After described three-temperature sensor is arranged on the outlet conduit point of cylinder cover water jacket and body water jacket.
The invention also discloses a kind of cooling flow match control method of described engine intelligent cooling system:
In diesel engine course of normal operation, second motor drives cooling waterpump that cooling liquid is pumped into coolant flow channel in machine, by the first electric-controlled thermostat, electronic control unit regulates the aperture of the first electric-controlled thermostat according to the water temperature data that first, second temperature transducer collects, thus distributes the coolant rate entering cylinder cover water jacket and body water jacket;
After cooling liquid enters cylinder cover water jacket and body water jacket respectively, respectively since the upper coolant water inlet of cylinder cap and body flows into, flow out from cylinder cap and body water outlet respectively after cooling heated component from top to bottom, before two-way cooling liquid is intersected in the second electric-controlled thermostat, electronic control unit regulates the aperture of the 3rd electric-controlled thermostat according to the water temperature data that three-temperature sensor collects, thus distribute the coolant rate size entering the first outlet and the second outlet, the cooling liquid entering the first outlet directly enters electric control pump, forms short circle; And the cooling liquid entering the second outlet passes through radiator, by the first motor-driven electronic fan for it provides forced water-empty convection heat exchange, after reducing coolant temperature, cooling liquid enters automatically controlled cooling waterpump, form major cycle, in the process, electronic control unit regulates the rotating speed of motor according to the water temperature signal that three-temperature sensor provides, thus control the rotating speed of electronic fan and electronic water pump
When the second outlet water temperature over-high of the second electric-controlled thermostat causes hydraulic pressure too high, higher than swelling water tank hydraulic pressure, cooling liquid automatically flows into swelling water tank and carries out water storage; When electric control pump inlet water pressure is lower than swelling water tank hydraulic pressure, cooling liquid automatically flows out swelling water tank inflow electric control pump and carries out moisturizing.
The invention also discloses cooling flow match control method in a kind of Cold Start of described engine intelligent cooling system:
In cold boot of diesel process, because cylinder sleeve heats up slower than cylinder cap, therefore in the warming-up firm incipient stage, reach certain pre-set limit T in coolant temperature
bbefore, first electric-controlled thermostat closes cylinder sleeve water jacket entrance, cooling liquid pumps in cylinder cover water jacket completely, the first outlet is entered by the second electric-controlled thermostat after cooling cylinder cap, namely directly enter water pump 1 and form short circle loop, cooling liquid is constantly subject to cylinder cap heating in this loop, and liquid temp to be cooled is elevated to pre-set limit T
bfirst electric-controlled thermostat opens jacket water cover entrance, and according to electronic control unit instruction configuration cylinder cover water jacket and body water jacket flow, meet at the second electric-controlled thermostat after cooling liquid has cooled cylinder cap and cylinder sleeve respectively in cylinder cap and body water jacket, reach pre-set limit T in coolant temperature
cbefore, the second electric-controlled thermostat still closes the second outlet, and cooling liquid forms short circle loop by water pump, and cooling liquid is subject to cylinder cap and cylinder jacket heating in this loop simultaneously, until coolant temperature is elevated to pre-set limit T
c, the second electric-controlled thermostat opens the second outlet, and cooling liquid is by entering water pump after radiator heat-dissipation, and warming-up process terminates.
The present invention has the following advantages:
1. this cooling system can carry out the regulation and control of independent cooling flow to cylinder cover water jacket, body water jacket, reduces supercooling, improves Diesel Engine Fuel Economy;
2., in Cold Start, this cooling system can be controlled in real time by ECU, adjust the coolant rate of cylinder cover water jacket and body water jacket independently, thus reduces warm-up period, emissions reduction;
3. in this cooling system, in cylinder cover water jacket and cylinder sleeve water jacket, cooling liquid is and flows from top to bottom, can improve key area intensity of cooling, reduce thermal stress, improve heated component thermal reliability.
Accompanying drawing explanation
Fig. 1 is cooling system schematic diagram;
Fig. 2 is cooling system control section schematic diagram;
Fig. 3 is cylinder cover water jacket and cylinder sleeve water jacket internal coolant flow schematic diagram.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail, but not as a limitation of the invention.
This cooling system model mainly comprises machine inner cooling water cover (cylinder cap, body cooling jacket), the outer cooling system annex (electric control pump, electrical control electric fan, electric-controlled thermostat, swelling water tank) of machine and electronic control part (ECU, temperature transducer)
As shown in Figure 1, a kind of cooling based on motor split comprises electric control pump, the first electric-controlled thermostat, the second electric-controlled thermostat, electrical control electric fan, swelling water tank, cylinder cover water jacket, body water jacket, the first temperature transducer, the second temperature transducer, three-temperature sensor, the first motor, the second motor and electronic control unit with the engine intelligent cooling system oppositely cooled
Described electric control pump 1 and the first electric-controlled thermostat 2 are arranged in cylinder cover water jacket 8 and body water jacket 9 front end, and are installed on engine body 7, cylinder cap, body water jacket rear end is furnished with the second electric-controlled thermostat 10, second electric-controlled thermostat 10 is installed on engine cylinder cover 6, first outlet of the second electric-controlled thermostat 10 directly connects electric control pump 1 by pipeline, second outlet is divided into two coolant ducts, a coolant duct connects electric control pump 1 through radiator 12, another coolant duct connects electric control pump 1 after swelling water tank 16, electrical control electric fan 13 is for providing forced-convection heat transfer to radiator 12, first motor 14 drives electrical control electric fan 13, second motor 15 drives electric control pump 1, first temperature transducer 3 is arranged on cylinder cover water jacket entrance, second temperature transducer 4 is arranged on body water jacket entrance, three-temperature sensor 5 is arranged on the entrance of the second electric-controlled thermostat 10, electronic control unit 11 and all temperature transducers, electric-controlled thermostat is connected with motor.
In cylinder cover water jacket 8, body water jacket 9, coolant flow direction is from top to bottom.
Cylinder cap and body adopt independently water jacket to cool.
First outlet of the first electric-controlled thermostat 2 connects cylinder cover water jacket 8, second and exports and connect body water jacket 9, before the outlet conduit of cylinder cover water jacket 8 and body water jacket 9 meets at the second electric-controlled thermostat 10.
After described three-temperature sensor 5 is arranged on the outlet conduit point of cylinder cover water jacket 8 and body water jacket 9.
The invention also discloses a kind of cooling flow match control method of described engine intelligent cooling system:
In diesel engine course of normal operation, second motor 15 drives cooling waterpump 1 that cooling liquid is pumped into coolant flow channel in machine, by the first electric-controlled thermostat 2, electronic control unit 11 regulates the aperture of the first electric-controlled thermostat 2 according to the water temperature data that first, second temperature transducer collects, thus distributes the coolant rate entering cylinder cover water jacket and body water jacket; Electronic control unit 11 compares the first temperature transducer 3 signal and cylinder cover water jacket coolant temperature predetermined target value T
h, compare the second temperature transducer 4 signal and body water jacket coolant temperature desired value T simultaneously
l, read electric-controlled thermostat 2 opening amount signal by MAP and export, and then controlling.
After cooling liquid enters cylinder cover water jacket 6 and body water jacket 7 respectively, respectively since the upper coolant water inlet of cylinder cap and body flows into, flow out from cylinder cap and body water outlet respectively after cooling heated component from top to bottom, before two-way cooling liquid is intersected in the second electric-controlled thermostat 10, electronic control unit 11 regulates the aperture of the 3rd electric-controlled thermostat 10 according to the water temperature data that three-temperature sensor 5 collects, thus distribute the coolant rate size entering the first outlet and the second outlet, the cooling liquid entering the first outlet directly enters electric control pump 1, forms short circle; Three-temperature sensor 5 signal does not reach temperature predefined value T
c, electronic control unit 11 controls the 3rd electronic thermostat 5 and closes the second outlet; If three-temperature sensor 5 signal reaches temperature predefined value T
c, but do not reach thermostat complete open temp predefined value T
p, then electronic control unit 11 controls the 3rd electronic thermostat 5 and opens the first and second outlets simultaneously, and according to temperature data MAP value adjustment two outlet aperture; If three-temperature sensor 5 signal reaches thermostat complete open temp predefined value T
p, electronic control unit 11 controls the 3rd electronic thermostat 5 and closes the first outlet, opens the second outlet completely.And enter the cooling liquid of the second outlet by radiator 12, the electronic fan 13 driven by the first motor 14 provides forced water-empty convection heat exchange for it, after reducing coolant temperature, cooling liquid enters automatically controlled cooling waterpump 1, form major cycle, in the process, electronic control unit regulates the rotating speed of motor according to the water temperature signal that three-temperature sensor 5 provides, thus control the rotating speed of electronic fan and electronic water pump
When the second outlet water temperature over-high of the second electric-controlled thermostat 10 causes hydraulic pressure too high, higher than swelling water tank 16 hydraulic pressure, cooling liquid automatically flows into swelling water tank 16 and carries out water storage; When electric control pump 1 inlet water pressure is lower than swelling water tank 16 hydraulic pressure, cooling liquid automatically flows out swelling water tank 16 and flows into electric control pump 1 and carry out moisturizing.
The invention also discloses cooling flow match control method in a kind of Cold Start of described engine intelligent cooling system:
In cold boot of diesel process, because cylinder sleeve 7 heats up slower than cylinder cap 6, therefore in the warming-up firm incipient stage, reach certain pre-set limit T in coolant temperature
bbefore, first electric-controlled thermostat 2 closes cylinder sleeve water jacket 9 entrance, cooling liquid pumps in cylinder cover water jacket 8 completely, the first outlet is entered by the second electric-controlled thermostat 10 after cooling cylinder cap, namely directly enter water pump 1 and form short circle loop, cooling liquid is constantly subject to cylinder cap heating in this loop, and liquid temp to be cooled is elevated to pre-set limit T
bfirst electric-controlled thermostat 2 opens cylinder sleeve water jacket 9 entrance, and according to electronic control unit 11 instruction configuration cylinder cover water jacket and body water jacket flow, meet at the second electric-controlled thermostat 10 after cooling liquid has cooled cylinder cap and cylinder sleeve respectively in cylinder cap and body water jacket, reach pre-set limit T in coolant temperature
cbefore, the second electric-controlled thermostat 10 still closes the second outlet, and cooling liquid forms short circle loop by water pump 1, and cooling liquid is subject to cylinder cap and cylinder jacket heating in this loop simultaneously, until coolant temperature is elevated to pre-set limit T
c, the second electric-controlled thermostat 10 opens the second outlet, and cooling liquid enters water pump 1 after being dispelled the heat by radiator 12, and warming-up process terminates.
As shown in Figure 2, in Intelligence Cooling System working procedure, first temperature transducer 3 and the second temperature transducer 4 records cylinder cover water jacket water inlet water temperature signal respectively and jacket water is inserted in outlet water temperature signal, signal transmission is to electronic control unit 11, electronic control unit 11 controls the aperture of the first electronic thermostat 2 according to MAP, thus regulates the coolant rate entered in cylinder cover water jacket and cylinder sleeve water jacket.Three-temperature sensor 5 records cylinder cover water jacket and body water jacket outfall sewer coolant temperature signal is delivered in electronic control unit 11, electronic control unit 11 controls the aperture of the second electronic thermostat 10 according to MAP, regulates the coolant rate entering large and small circulation; Simultaneously electronic control unit 11 is according to the intensity of cooling of outfall sewer coolant temperature SC sigmal control first motor 14 rotating speed controlled cooling model fan, and controls the second motor 15 rotating speed thus control the cooling liquid total discharge that electric control pump and then regulation and control enter cylinder cover water jacket and body water jacket.
As shown in Figure 3, in order to realize reverse cooling, in cylinder cover water jacket, body water jacket, coolant flow direction is from top to bottom.In cylinder cover water jacket, cooling liquid cools the heat affected zone 2 such as the air outlet flue of cylinder head top after water jacket upper inlet 1 enters water jacket, flow into the high thermal load regions 4 such as lower floor water jacket cooling fire power face ridge area by middle part water jacket 3 afterwards, after be summarized in cylinder cover water jacket outlet 5 and flow out; In body water jacket, cooling liquid enters water jacket rear section from water jacket upper inlet 6 and streams cooling high thermal load regions, top 7, to stream in process cooling liquid and flows 8 from top to down simultaneously, after be summarized in the outlet 9 of jacket water cover and flow out.
Claims (7)
1. one kind cools and the engine intelligent cooling system oppositely cooled based on motor split, it is characterized in that comprising electric control pump, the first electric-controlled thermostat, the second electric-controlled thermostat, electrical control electric fan, swelling water tank, cylinder cover water jacket, body water jacket, the first temperature transducer, the second temperature transducer, three-temperature sensor, the first motor, the second motor and electronic control unit
Described electric control pump (1) and the first electric-controlled thermostat (2) are arranged in cylinder cover water jacket (8) and body water jacket (9) front end, and are installed on engine body (7), cylinder cap, body water jacket rear end is furnished with the second electric-controlled thermostat (10), second electric-controlled thermostat (10) is installed on engine cylinder cover (6), first outlet of the second electric-controlled thermostat (10) directly connects electric control pump (1) by pipeline, second outlet is divided into two coolant ducts, a coolant duct connects electric control pump (1) through radiator (12), another coolant duct connects electric control pump (1) after swelling water tank (16), electrical control electric fan (13) is for providing forced-convection heat transfer to radiator (12), first motor (14) drives electrical control electric fan (13), second motor (15) drives electric control pump (1), first temperature transducer (3) is arranged on cylinder cover water jacket entrance, second temperature transducer (4) is arranged on body water jacket entrance, three-temperature sensor (5) is arranged on the entrance of the second electric-controlled thermostat (10), electronic control unit (11) and all temperature transducers, electric-controlled thermostat is connected with motor.
2. according to claim 1 based on motor split cooling and the engine intelligent cooling system oppositely cooled, it is characterized in that coolant flow direction is from top to bottom in cylinder cover water jacket (8), body water jacket (9).
3. according to claim 1 based on motor split cooling and the engine intelligent cooling system oppositely cooled, it is characterized in that cylinder cap and body adopt independently water jacket to cool.
4. according to claim 1 based on motor split cooling and the engine intelligent cooling system oppositely cooled, it is characterized in that the first outlet of the first electric-controlled thermostat (2) connects cylinder cover water jacket (8), second outlet connects body water jacket (9), before the outlet conduit of cylinder cover water jacket (8) and body water jacket (9) meets at the second electric-controlled thermostat (10).
5. according to claim 4 based on motor split cooling and the engine intelligent cooling system oppositely cooled, after it is characterized in that described three-temperature sensor (5) is arranged on the outlet conduit point of cylinder cover water jacket (8) and body water jacket (9).
6. a cooling flow match control method for engine intelligent cooling system as claimed in claim 1, is characterized in that:
In diesel engine course of normal operation, second motor (15) drives cooling waterpump (1) that cooling liquid is pumped into coolant flow channel in machine, by the first electric-controlled thermostat (2), electronic control unit (11) regulates the aperture of the first electric-controlled thermostat (2) according to the water temperature data that first, second temperature transducer collects, thus distributes the coolant rate entering cylinder cover water jacket and body water jacket;
After cooling liquid enters cylinder cover water jacket (6) and body water jacket (7) respectively, respectively since the upper coolant water inlet of cylinder cap and body flows into, flow out from cylinder cap and body water outlet respectively after cooling heated component from top to bottom, it is front that two-way cooling liquid is intersected in the second electric-controlled thermostat (10), electronic control unit (11) regulates the aperture of the 3rd electric-controlled thermostat (10) according to the water temperature data that three-temperature sensor (5) collects, thus distribute the coolant rate size entering the first outlet and the second outlet, the cooling liquid entering the first outlet directly enters electric control pump (1), form short circle, and enter the cooling liquid of the second outlet by radiator (12), the electronic fan (13) driven by the first motor (14) provides forced water-empty convection heat exchange for it, after reducing coolant temperature, cooling liquid enters automatically controlled cooling waterpump (1), form major cycle, in the process, electronic control unit regulates the rotating speed of motor according to the water temperature signal that three-temperature sensor (5) provides, thus control the rotating speed of electronic fan and electronic water pump
When the second outlet water temperature over-high of the second electric-controlled thermostat (10) causes hydraulic pressure too high, higher than swelling water tank (16) hydraulic pressure, cooling liquid automatically flows into swelling water tank (16) and carries out water storage; When electric control pump (1) inlet water pressure is lower than swelling water tank (16) hydraulic pressure, cooling liquid automatically flows out swelling water tank (16) inflow electric control pump (1) and carries out moisturizing.
7. a cooling flow match control method in the Cold Start of engine intelligent cooling system as claimed in claim 1, is characterized in that:
In cold boot of diesel process, because cylinder sleeve (7) heats up slower than cylinder cap (6), therefore in the warming-up firm incipient stage, reach certain pre-set limit T in coolant temperature
bbefore, first electric-controlled thermostat (2) closes cylinder sleeve water jacket (9) entrance, cooling liquid pumps in cylinder cover water jacket (8) completely, the first outlet is entered by the second electric-controlled thermostat (10) after cooling cylinder cap, namely directly enter water pump 1 and form short circle loop, cooling liquid is constantly subject to cylinder cap heating in this loop, and liquid temp to be cooled is elevated to pre-set limit T
bfirst electric-controlled thermostat (2) opens cylinder sleeve water jacket (9) entrance, and according to electronic control unit (11) instruction configuration cylinder cover water jacket and body water jacket flow, meet at the second electric-controlled thermostat (10) after cooling liquid has cooled cylinder cap and cylinder sleeve respectively in cylinder cap and body water jacket, reach pre-set limit T in coolant temperature
cbefore, the second electric-controlled thermostat (10) still closes the second outlet, and cooling liquid forms short circle loop by water pump (1), and cooling liquid is subject to cylinder cap and cylinder jacket heating in this loop simultaneously, until coolant temperature is elevated to pre-set limit T
c, the second electric-controlled thermostat (10) opens the second outlet, and cooling liquid is by entering water pump (1) after radiator (12) heat radiation, and warming-up process terminates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510970669.8A CN105422247B (en) | 2015-12-21 | 2015-12-21 | A kind of engine intelligent cooling system and control method for cooling down and reversely cooling down based on split |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510970669.8A CN105422247B (en) | 2015-12-21 | 2015-12-21 | A kind of engine intelligent cooling system and control method for cooling down and reversely cooling down based on split |
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| CN105422247A true CN105422247A (en) | 2016-03-23 |
| CN105422247B CN105422247B (en) | 2017-11-14 |
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Cited By (12)
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| CN105756764A (en) * | 2016-03-01 | 2016-07-13 | 浙江吉利汽车研究院有限公司 | Engine cooling system |
| CN106523173A (en) * | 2016-10-21 | 2017-03-22 | 南京世界村汽车动力有限公司 | Cooling system for engine |
| CN106703967A (en) * | 2017-01-06 | 2017-05-24 | 吉林大学 | Engineering vehicle temperature control system and method based on double-cooling loop split radiator |
| CN106894882A (en) * | 2017-04-28 | 2017-06-27 | 重庆长安汽车股份有限公司 | A kind of automobile engine cooling control system and control method |
| CN107178415A (en) * | 2017-07-17 | 2017-09-19 | 湖北三环专用汽车有限公司 | A kind of system for lifting commercial car thermal balance performance |
| CN108533379A (en) * | 2017-03-02 | 2018-09-14 | 丰田自动车株式会社 | The coolant circulation system of on-vehicle internal combustion engine |
| CN109162799A (en) * | 2018-09-27 | 2019-01-08 | 潍柴动力股份有限公司 | A kind of Intelligence Cooling System control method and device |
| CN110857654A (en) * | 2018-08-22 | 2020-03-03 | 现代自动车株式会社 | Control method for cooling system |
| CN111396186A (en) * | 2020-04-16 | 2020-07-10 | 昆明云内动力股份有限公司 | Split type cooling system and method for engine |
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| CN111396186A (en) * | 2020-04-16 | 2020-07-10 | 昆明云内动力股份有限公司 | Split type cooling system and method for engine |
| CN111396186B (en) * | 2020-04-16 | 2023-08-08 | 昆明云内动力股份有限公司 | Split type cooling system and method for engine |
| CN113586224A (en) * | 2021-08-26 | 2021-11-02 | 西安交通大学 | Intelligent cooling system based on engine split cooling and control method thereof |
| CN113790096A (en) * | 2021-11-18 | 2021-12-14 | 山西凯嘉煤层气发电有限公司 | Operation control method for variable frequency fan of gas generator set |
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