CN205297711U - Engine intelligent cooling system based on components of a whole that can function independently cooling and reverse cooling - Google Patents

Engine intelligent cooling system based on components of a whole that can function independently cooling and reverse cooling Download PDF

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Publication number
CN205297711U
CN205297711U CN201521080053.5U CN201521080053U CN205297711U CN 205297711 U CN205297711 U CN 205297711U CN 201521080053 U CN201521080053 U CN 201521080053U CN 205297711 U CN205297711 U CN 205297711U
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China
Prior art keywords
water jacket
electric
cooling
coolant
cylinder cover
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Withdrawn - After Issue
Application number
CN201521080053.5U
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Chinese (zh)
Inventor
俞小莉
陈晓强
黄瑞
刘震涛
黄钰期
孙正
奕冬
陆永升
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Zhejiang University ZJU
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Zhejiang University ZJU
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Priority to CN201521080053.5U priority Critical patent/CN205297711U/en
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Abstract

The utility model discloses an engine intelligent cooling system based on components of a whole that can function independently cooling and reverse cooling, cooling system include: cylinder cover water sleeve, organism water jacket, electric control pump, electron temperature saver, automatically controlled fan, radiator, expansion tank, temperature sensor, motor and ecu. In system's working process, in the engine is gone into coolant pump to the electric control pump, first electronics temperature saver gets into cylinder cover water sleeve and organism water jacket respectively according to the coolant temperature signal control coolant liquid of cylinder cap and organism in, to flowing down on follow, cooling cylinder cover and the organism after flow out, the distribution gets into coolant flow big, the tiny loop to second electron temperature saver according to house steward coolant temperature, and coolant liquid pump after the circulation is gone into the engine built -in and is cooled off. The utility model discloses can cover and organism coolant flow by accurate distribution engine cylinder, reduce the inhomogeneous phenomenon of cooling to shorten the engine heat soak time, optimize the hot state of spare part that is heated through reverse the cooling simultaneously.

Description

A kind of engine intelligent cooling system based on split cooling and reversely cooling
Technical field
This utility model relates to engine intelligent cooling system, particularly relates to the engine intelligent cooling system in conjunction with cylinder cap body split cooling technology and reverse cooling technology.
Background technology
Along with the continuous lifting of explosion pressure in diesel engine power density and cylinder, the heated component thermic load including 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 its reliability, fuel consumption and emission performance are proposed tightened up requirement by the development of diesel engine, therefore cooling system should provide enough intensity of cooling to ensure its thermal reliability for high thermal load regions, reduce the cooling flow in relatively low region, thermic load district to avoid the waste of intensity of cooling simultaneously, improve its fuel economy with this.
And traditional cooling system adopts the mode of integration water jacket for the cooling of cylinder cap, cylinder sleeve, coolant enters cylinder cover water jacket cooling cylinder cap by upper water hole after being introduced into body water jacket cooling cylinder sleeve, and owing to cylinder cap thermic load relatively cylinder sleeve is high, this kind of type of cooling can not the intensity of cooling of independent regulation cylinder cap and cylinder sleeve, Cooling of Cylinder Head therefore can be caused not enough or cylinder sleeve supercooling. And simultaneously coolant cools down cylinder cap after first cooling down cylinder sleeve again, cylinder cover water jacket coolant temperature certainly will being caused higher than cylinder sleeve water jacket coolant temperature, this is also detrimental to the Reasonable Regulation And Control of 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: cylinder cap, body are respectively adopted independent cooling circuit carry out split cooling can pass through independent regulate and control each cooling circuit uninterrupted and carry out " accurately cooling down ". Research shows, adopting split cooling reasonable distribution cooling flow can suitably reduce cylinder cap mean temperature and improve cylinder sleeve mean temperature, reduces complete machine coolant heat dissipation amount and water jacket power consumption, reducing cylinder sleeve-piston friction coefficient thus promoting fuel economy;Adopt split cooling can shorten engine warm-up time simultaneously, improve discharge performance. On the other hand, adopt reverse cooling technology can pass through to improve key area intensity of cooling, reduce cylinder head plate fire power face thermal stress, improve heated component thermal reliability.
Therefore, connected applications cylinder cap-body split cooling technology and reverse cooling technology, it is proposed to the lifting of the properties of electromotor is of great advantage by a kind of Intelligence Cooling System based on the two.
Summary of the invention
The purpose of this utility model is to propose a kind of engine intelligent cooling system based on split cooling with reversely cooling.
A kind of engine intelligent cooling system based on electromotor split cooling with reversely cooling includes electric control pump, the first electric-controlled thermostat, the second electric-controlled thermostat, electrical control electric fan, expansion tank, cylinder cover water jacket, body water jacket, the first temperature sensor, the second temperature sensor, three-temperature sensor, the first motor, the second motor and electronic control unit
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 lid, first outlet of the second electric-controlled thermostat is directly connected to electric control pump by pipeline, second outlet is divided into two coolant ducts, one coolant duct connects electric control pump through radiator, another coolant duct connects electric control pump after expansion tank, electrical control electric fan is for providing forced-convection heat transfer to radiator, first motor drives electrical control electric fan, second motor drives electric control pump, first temperature sensor is arranged on cylinder cover water jacket entrance, second temperature sensor 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 of temperature sensor, 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 independent water jacket to cool down.
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.
This utility model has the advantage that
1. cylinder cover water jacket, body water jacket can be carried out the regulation and control of independent cooling flow by this cooling system, reduce supercooling, improve Diesel Engine Fuel Economy;
2., in Cold Start, this cooling system can pass through ECU and control in real time, is independently adjustable cylinder cover water jacket and the coolant rate of body water jacket, thus reducing warm-up period, and emissions-reducing;
3. in this cooling system, in cylinder cover water jacket and cylinder sleeve water jacket, coolant is and flows from top to bottom, it is possible to improves key area intensity of cooling, reduces thermal stress, improves heated component thermal reliability.
Accompanying drawing explanation
Fig. 1 is cooling system schematic diagram;
Fig. 2 is that cooling system controls partial schematic diagram;
Fig. 3 is cylinder cover water jacket and cylinder sleeve water jacket internal coolant flow schematic diagram.
Detailed description of the invention
Below in conjunction with accompanying drawing, this utility model is described in further detail, but not as to restriction of the present utility model.
This cooling system model mainly includes machine inner cooling water set (cylinder cap, body cooling jacket), the outer cooling system adnexa (electric control pump, electrical control electric fan, electric-controlled thermostat, expansion tank) of machine and electronic control part (ECU, temperature sensor).
As shown in Figure 1, a kind of engine intelligent cooling system based on electromotor split cooling with reversely cooling includes electric control pump, the first electric-controlled thermostat, the second electric-controlled thermostat, electrical control electric fan, expansion tank, cylinder cover water jacket, body water jacket, the first temperature sensor, the second temperature sensor, 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 is directly connected to electric control pump 1 by pipeline, second outlet is divided into two coolant ducts, one coolant duct connects electric control pump 1 through radiator 12, another coolant duct connects electric control pump 1 after expansion 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 sensor 3 is arranged on cylinder cover water jacket entrance, second temperature sensor 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 of temperature sensor, 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 independent water jacket to cool down.
First outlet of the first electric-controlled thermostat 2 connects cylinder cover water jacket 8, and the 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.
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 the cooling flow match control method of a kind of described engine intelligent cooling system:
In diesel engine course of normal operation, second motor 15 drives cooling water pump 1 that coolant pumps 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 sensor collects, thus distributing into cylinder cover water jacket and the coolant rate of body water jacket; Electronic control unit 11 compares the first temperature sensor 3 signal and cylinder cover water jacket coolant temperature predetermined target value TH, compare the second temperature sensor 4 signal and body water jacket coolant temperature desired value T simultaneouslyL, read electric-controlled thermostat 2 opening amount signal by MAP and export, and then controlling.
After coolant respectively enters cylinder cover water jacket 6 and body water jacket 7, respectively since the upper coolant water inlet of cylinder cap and body flows into, flow out from cylinder cap and body outlet respectively after cooling heated component from top to bottom, before two-way coolant 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 distributing into the first outlet and the coolant rate size of the second outlet, the coolant entering the first outlet is directly entered electric control pump 1, forms partial circulating; Three-temperature sensor 5 signal is not up to temperature preset value Tc, electronic control unit 11 controls the 3rd electronic thermostat 5 and closes the second outlet;If three-temperature sensor 5 signal reaches temperature preset value Tc, but fully open temperature preset value T not up to thermostatp, then electronic control unit 11 control the 3rd electronic thermostat 5 open simultaneously first and second outlet, and according to temperature data MAP value regulate two outlet apertures; If three-temperature sensor 5 signal reaches thermostat fully opens temperature preset value Tp, electronic control unit 11 controls the 3rd electronic thermostat 5 and closes the first outlet, fully opens the second outlet. And the coolant entering the second outlet passes through radiator 12, the electronic fan 13 driven by the first motor 14 provides forced water-sky heat convection for it, after reducing coolant temperature, coolant enters automatically controlled cooling water pump 1, forming systemic circulation, 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 controlling the rotating speed of electronic fan and electronic water pump
Causing that hydraulic pressure is too high when the second exit water temperature of the second electric-controlled thermostat 10 is too high, higher than expansion tank 16 hydraulic pressure, coolant automatically flows into expansion tank 16 and carries out water storage; When electric control pump 1 inlet water pressure is lower than expansion tank 16 hydraulic pressure, coolant automatically flows out expansion tank 16 and flows into electric control pump 1 and carry out moisturizing.
The invention also discloses cooling flow match control method in the Cold Start of a kind of described engine intelligent cooling system:
In cold boot of diesel process, owing to 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 temperaturebBefore, first electric-controlled thermostat 2 closes cylinder sleeve water jacket 9 entrance, coolant 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 it is directly entered water pump 1 and forms partial circulating loop, coolant is constantly subject to cylinder cap heating in this loop, and liquid temp to be cooled is increased to pre-set limit TbFirst electric-controlled thermostat 2 opens cylinder sleeve water jacket 9 entrance, and configure cylinder cover water jacket and body water jacket flow according to electronic control unit 11 instruction, cylinder cap and in body water jacket coolant meet at the second electric-controlled thermostat 10 after having cooled down cylinder cap and cylinder sleeve respectively, reach pre-set limit T in coolant temperaturecBefore, the second electric-controlled thermostat 10 remains off the second outlet, and coolant forms partial circulating loop by water pump 1, and coolant is subject to cylinder cap and cylinder jacket heating in this loop simultaneously, until coolant temperature is increased to pre-set limit Tc, the second electric-controlled thermostat 10 opens the second outlet, and coolant is by entering water pump 1 after radiator 12 heat radiation, and warming-up process terminates.
As shown in Figure 2, in Intelligence Cooling System work process, first temperature sensor 3 and the second temperature sensor 4 records cylinder cover water jacket water inlet water temperature signal respectively and jacket water is inserted in outlet water temperature signal, signal is transferred to electronic control unit 11, electronic control unit 11 controls the aperture of the first electronic thermostat 2 according to MAP, thus regulating the coolant rate entered in cylinder cover water jacket and cylinder sleeve water jacket. Three-temperature sensor 5 records cylinder cover water jacket and is delivered in electronic control unit 11 with body water jacket outfall sewer coolant temperature signal, 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; Electronic control unit 11 controls the first motor 14 rotating speed according to outfall sewer coolant temperature signal and controls the intensity of cooling of cooling fan simultaneously, and controls the second motor 15 rotating speed thus controlling electric control pump and then the coolant total flow of regulation and control entrance cylinder cover water jacket and body water jacket.
As it is shown on 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, coolant cools down the heat affected zone 2 such as the exhaust duct of cylinder head top after entering water jacket from water jacket upper inlet 1, flowed into the high thermal load regions 4 such as lower floor water jacket cooling fire power face ridge area afterwards by middle part water jacket 3, after be summarized in cylinder cover water jacket outlet 5 outflow; In body water jacket, coolant enters water jacket rear section from water jacket upper inlet 6 and streams cooling high thermal load regions, top 7, streams in process coolant and flows 8 from top to down simultaneously, after be summarized in jacket water set outlet 9 outflow.

Claims (5)

1. the engine intelligent cooling system based on split cooling and reversely cooling, it is characterized in that including electric control pump, the first electric-controlled thermostat, the second electric-controlled thermostat, electrical control electric fan, expansion tank, cylinder cover water jacket, body water jacket, the first temperature sensor, the second temperature sensor, 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) is directly connected to electric control pump (1) by pipeline, second outlet is divided into two coolant ducts, one coolant duct connects electric control pump (1) through radiator (12), another coolant duct connects electric control pump (1) after expansion 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 sensor (3) is arranged on cylinder cover water jacket entrance, second temperature sensor (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 of temperature sensor, electric-controlled thermostat is connected with motor.
2. engine intelligent cooling system according to claim 1, it is characterised in that in cylinder cover water jacket (8), body water jacket (9), coolant flow direction is from top to bottom.
3. engine intelligent cooling system according to claim 1, it is characterised in that cylinder cap and body adopt independent water jacket to cool down.
4. engine intelligent cooling system according to claim 1, it is characterized in that the first of the first electric-controlled thermostat (2) outlet 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. engine intelligent cooling system according to claim 4, it is characterised in that after described three-temperature sensor (5) is arranged on the outlet conduit point of cylinder cover water jacket (8) and body water jacket (9).
CN201521080053.5U 2015-12-21 2015-12-21 Engine intelligent cooling system based on components of a whole that can function independently cooling and reverse cooling Withdrawn - After Issue CN205297711U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201521080053.5U CN205297711U (en) 2015-12-21 2015-12-21 Engine intelligent cooling system based on components of a whole that can function independently cooling and reverse cooling

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201521080053.5U CN205297711U (en) 2015-12-21 2015-12-21 Engine intelligent cooling system based on components of a whole that can function independently cooling and reverse cooling

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105422247A (en) * 2015-12-21 2016-03-23 浙江大学 Intelligent cooling system based on split cooling and reverse cooling for engine, and control method
CN105649747A (en) * 2016-01-06 2016-06-08 潍柴动力股份有限公司 Electronically controlled piston cooling nozzle control method and system
CN109162798A (en) * 2018-10-10 2019-01-08 山东赛马力发电设备有限公司 A kind of generating set cistern fan intelligent control system

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105422247A (en) * 2015-12-21 2016-03-23 浙江大学 Intelligent cooling system based on split cooling and reverse cooling for engine, and control method
CN105422247B (en) * 2015-12-21 2017-11-14 浙江大学 A kind of engine intelligent cooling system and control method for cooling down and reversely cooling down based on split
CN105649747A (en) * 2016-01-06 2016-06-08 潍柴动力股份有限公司 Electronically controlled piston cooling nozzle control method and system
CN105649747B (en) * 2016-01-06 2018-08-07 潍柴动力股份有限公司 A kind of automatically controlled piston cooling nozzle control method and system
CN109162798A (en) * 2018-10-10 2019-01-08 山东赛马力发电设备有限公司 A kind of generating set cistern fan intelligent control system

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GR01 Patent grant
AV01 Patent right actively abandoned
AV01 Patent right actively abandoned

Granted publication date: 20160608

Effective date of abandoning: 20171114