CN102777251B - Cooling control system of diesel engine, and method thereof - Google Patents
Cooling control system of diesel engine, and method thereof Download PDFInfo
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- CN102777251B CN102777251B CN201210282192.0A CN201210282192A CN102777251B CN 102777251 B CN102777251 B CN 102777251B CN 201210282192 A CN201210282192 A CN 201210282192A CN 102777251 B CN102777251 B CN 102777251B
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- 238000001816 cooling Methods 0.000 title claims abstract description 79
- 238000000034 method Methods 0.000 title claims abstract description 15
- 239000013535 sea water Substances 0.000 claims abstract description 71
- 239000010687 lubricating oil Substances 0.000 claims abstract description 44
- 239000003921 oil Substances 0.000 claims abstract description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 25
- 230000001105 regulatory effect Effects 0.000 claims description 52
- 230000008676 import Effects 0.000 claims description 30
- 230000001276 controlling effect Effects 0.000 claims description 12
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 239000000498 cooling water Substances 0.000 description 8
- 230000033228 biological regulation Effects 0.000 description 4
- 238000004781 supercooling Methods 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 3
- 239000000314 lubricant Substances 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Abstract
The invention discloses a cooling control system of a diesel engine, and a method thereof, wherein two high-low temperature heat exchangers are arranged; a sea water pump adjusts total yield of cooled water through frequency control; flow adjusting valves are respectively arranged at sea water inlets of two high-low temperature heat exchangers to adjust supply quantity of sea water; a high-low temperature heat exchanger provides cooled water to an intercooler; pressurized air is cooled to lower than 60 degrees through the intercooler; the other one high-low temperature heat exchanger is divided into two paths which are respectively used for cooling a machine body and feeding water for a lubricating oil cooler; in the system, an air outlet of the intercooler is provided with a temperature sensor; a temperature sensor is arranged on the machine body; a temperature sensor is arranged at an oil outlet of the lubricating oil cooler; and water outlets of two high-low temperature heat exchangers are respectively provided with temperature sensors. According to the invention, temperature at each point is detected, and is compared with set temperature, and flow at various inlets is controlled through a frequency converter and the flow adjusting valve by using a flow adjusting formula and a control model.
Description
Technical field
The invention belongs to electromechanical integration technology area, relate to a kind of diesel engine cooling control system and method for diesel-engine body, inlet air and lubricant oil being carried out to intelligent collecting and distributing control.
Background technique
The hot state of diesel engine is an important evidence of Design Technology for Diesels, is also the key factor of ship power cabin design of Cooling System.The heat Partial Conversion of diesel fuel burning is effective merit (approximately 40%), and all the other are by cooling medium (approximately 30%), and exhaust (approximately 30%) etc. is taken away.The valve directly contacting with high-temperature gas, casing wall, cylinder sleeve, piston and cylinder cap etc., temperature raises rapidly.And the temperature range of part reliably working is limited, cooling deficiency can cause volumetric efficiency to reduce, and burns undesired, and power stage reduces; Rough running, parts bear additional impact load; Movement parts, because expanded by heating destroys normal clearance, causes " scuffing of cylinder bore ", even piston fusing; Parts rigidity, intensity will reduce greatly, and mechanical property declines, and even damage; Lubricating oil viscosity reduces, and rotten even gum deposit, makes lubrication system works bad, accelerates the wearing and tearing of parts.And undercooling can cause fuel-oil atmozation bad, fuel consumption increases, discharge increases; Enter the fuel dilution lubricant oil of crankcase, greasy property declines; Power stage reduces, and causes power output not enough; Sulphide in gas of combustion is met water and is generated sulphurous acid, corrosion surface of the work; Lubricating oil viscosity is excessive, and movement parts surface friction drag increases, and diesel engine frictional loss increases.Therefore the top priority of diesel engine cooling system guarantees cooling appropriateness exactly, and the key components and parts of guaranteeing to be heated is worked within the scope of safety temperature.
Conventional diesel engine cooling system adopts static matching method, take rated power point as cooling system maximum load point, calculates required cooling water inflow, with maximum torque point, carries out amount of cooling water check, and this design method can meet the heat radiation requirement under diesel engine rated power.Although adopted the measures such as temperature-conserving valve to guarantee water-exit temperature, under medium and small load, cooling water inflow is excessive, easily there is supercooling problem in diesel engine.Supercooling has been taken away diesel combustion heat release on the one hand too much, causes output power to decline, and oil consumption increases; Cause on the other hand water pump consumed power to increase, auxiliary system wasted power increases.Along with the development of low-speed diesel engine designing technique, by combustion process optimization method, reduce oil consumption very difficult, and cooling system consumed power accounts for diesel engine output power 5%, cooling water is taken away heat and is accounted for burning thermal discharge 30%, so optimized cooling system coupling has huge potentiality with control to reducing oil consumption.
Summary of the invention
The object of the invention is for the deficiencies in the prior art, for meeting engine power performance and Economy requirement, adopt variable-flow and collecting and distributing controlling method, balance and optimization body, inlet air and each cooling circuit heat dissipating capacity of lubricant oil, and a kind of diesel engine cooling control system and the method that provide.
It is as follows that the present invention solves the technological scheme that its technical problem takes:
The present invention includes diesel engine, sea water pump, first via sea water regulating valve, the second road sea water regulating valve, the high cryogenic heat exchanger of the first via, middle water supply pump, intercooler, air outlet temperature sensor, first via water-exit temperature sensor, the second high cryogenic heat exchanger in tunnel, cooling waterpump, the cooling modulating valve of body, the cooling modulating valve of lubricating oil, lube oil cooler, the second road water-exit temperature sensor, oil outlet temperature sensor, organism temperature sensor.
Seawater delivery side of pump divides two-way, one tunnel connects one end of first via sea water regulating valve, another road connects one end of the second road sea water regulating valve, the first import of the high cryogenic heat exchanger of another termination first via of first via sea water regulating valve, and the second outlet of the high cryogenic heat exchanger of the first via is provided with first via water-exit temperature sensor, the first outlet of the high cryogenic heat exchanger of the first via is drain opening, the second outlet connects one end of middle water supply pump, the first import of another termination intercooler of middle water supply pump, the first outlet of intercooler connects the second import of the high cryogenic heat exchanger of the first via, form circulation, the second outlet of intercooler connects the first import of diesel engine, and is provided with air outlet temperature sensor in the second outlet of intercooler, and the first outlet of diesel engine connects the second import of intercooler, forms circulation,
The first import of another termination the second high cryogenic heat exchanger in tunnel of the second road sea water regulating valve, the first outlet of the second high cryogenic heat exchanger in tunnel is drain opening, the second outlet connects one end of cooling waterpump, and the second outlet of the second high cryogenic heat exchanger in tunnel is provided with the second road water-exit temperature sensor, the other end of cooling waterpump divides two-way, pick one end of the cooling modulating valve of body, one road, another road connects one end of the cooling modulating valve of lubricating oil, the first import of another termination lube oil cooler of one end of the cooling modulating valve of lubricating oil, the first outlet of lube oil cooler connects the second import of the second high cryogenic heat exchanger in tunnel, form circulation, the second outlet of lube oil cooler connects the triple feed inlet of diesel engine, and the second outlet port at lube oil cooler is provided with oil outlet temperature sensor, the second import of another termination diesel engine of the cooling modulating valve of body, the 3rd outlet of diesel engine connects the second import of lube oil cooler, forms circulation, on diesel-engine body, be provided with organism temperature sensor.
The second outlet of the high cryogenic heat exchanger of the first via, the second outlet of intercooler, the second outlet of the second high cryogenic heat exchanger in tunnel are, the second outlet of lube oil cooler and the body of diesel engine are provided with temperature transducer;
Set temperature sensor, lube oil cooler oil outlet set temperature sensor, two high cryogenic heat exchanger water outlet set temperature sensors on intercooler air outlet set temperature sensor, body
Described sea water pump can utilize frequency control of motor speed to regulate total cooling water inflow, first via sea water regulating valve and the second road sea water regulating valve are for the sea water supply amount of independent regulation sea water pump, the high cryogenic heat exchanger of the first via provides cooling water for intercooler, by intercooler, the air after supercharging is cooled to lower than 60 °; The water outlet of the second high cryogenic heat exchanger in tunnel, minute two-way is for the water inlet of the Cooling and Lubricator oil cooler of diesel-engine body.The assignment of traffic of two-way, according to cooling requirement, is controlled by first via sea water regulating valve and the second road sea water regulating valve respectively.
Diesel engine cooling controlling method, concrete steps are as follows:
First, record the temperature signal on first via water-exit temperature sensor, the second road water-exit temperature sensor, air outlet temperature sensor, organism temperature sensor, oil outlet temperature sensor five tunnels, after analog to digital conversion circuit is processed, send cpu circuit to.
Secondly, adopt the Flow-rate adjustment formula of setting up, calculate the frequency regulating amount of sea water pump, and the regulation amount of first via sea water regulating valve, the second road sea water regulating valve, the cooling modulating valve of body, the cooling modulating valve of lubricating oil, by cpu circuit, send regulating command to D/A and drive circuit, thereby control sea water pump and four modulating valve.
Finally, cpu circuit, by CAN bus circuit, is communicated by letter with master control system.
Concrete operation step is as follows:
First the temperature controlling value of setting first via water-exit temperature sensor, the second road water-exit temperature sensor, air outlet temperature sensor, organism temperature sensor, oil outlet temperature sensor each point is respectively T
1, T
2, T
3, T
4, T
5.
Then all open first via sea water regulating valve, the second road sea water regulating valve, the cooling modulating valve of body, the cooling modulating valve of lubricating oil four modulating valve, i.e. F
1, F
2, F
3, F
4=1; Start the frequency conversion sea water pump of declared working condition, i.e. F
5=50Hz; Water supply pump, cooling waterpump in startup.
Then, again measure first via water-exit temperature sensor, the second road water-exit temperature sensor, air outlet temperature sensor, organism temperature sensor, oil outlet temperature sensor each point temperature, i.e. t
1, t
2, t
3, t
4, t
5.According to the Flow-rate adjustment formula of setting up, calculate δ (regulated quantity of sea water pump), δ
1(regulated quantity of two-way sea water regulating valve), δ
2(regulated quantity of the cooling modulating valve of body and the cooling modulating valve of lubricating oil):
If δ, δ
1, δ
2≤ 5%, do not do any adjusting, time delay, after 5 minutes, continues to detect the temperature of first via water-exit temperature sensor, the second road water-exit temperature sensor, air outlet temperature sensor, organism temperature sensor, oil outlet temperature sensor each point, calculates δ, δ
1, δ
2value, rejudges; Otherwise, δ as F
5the amount of turning down, δ
1as F
1the amount of turning down and F
2the amount of tuning up, δ
2as F
3the amount of turning down and F
4the amount of tuning up, regulate respectively the frequency of sea water pump and the aperture of four modulating valve, time delay is after 5 minutes, continues to detect the temperature of each point, calculates δ, δ
1, δ
2value, rejudges.
Beneficial effect of the present invention is as follows:
The task of diesel engine cooling system guarantees cooling appropriateness exactly, and the key components and parts of should guaranteeing to be heated is worked within the scope of safety temperature, does not produce again supercooling.Diesel engines at present generally adopts by declared working condition design cooling system, does not in servicely carry out any adjusting.Like this, under middle-low load, tend to produce supercooling, cause engine power performance and Economy to decline, discharge variation.Therefore, the collecting and distributing cooling system of intelligence provided by the invention and controlling method, can address this problem, and has obvious economy, society and environmental benefit.
Accompanying drawing explanation
Fig. 1 is cooling system structure figure of the present invention.
Fig. 2 is control system structural drawing of the present invention.
Fig. 3 is cooling system control flow chart of the present invention.
In figure, diesel engine 1, sea water pump 2, first via sea water regulating valve 3, the second road sea water regulating valve 4, the high cryogenic heat exchanger 5 of the first via, middle water supply pump 6, intercooler 7, air outlet temperature sensor 8, first via water-exit temperature sensor 9, the second high cryogenic heat exchanger 10 in tunnel, cooling waterpump 11, the cooling modulating valve 12 of body, the cooling modulating valve 13 of lubricating oil, lube oil cooler 14, the second road water-exit temperature sensor 15, oil outlet temperature sensor 16, organism temperature sensor 17.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
As shown in Figure 1, diesel engine cooling control system, comprises diesel engine 1, sea water pump 2, first via sea water regulating valve 3, the second road sea water regulating valve 4, the high cryogenic heat exchanger 5 of the first via, middle water supply pump 6, intercooler 7, air outlet temperature sensor 8, first via water-exit temperature sensor 9, the second high cryogenic heat exchanger 10 in tunnel, cooling waterpump 11, the cooling modulating valve 12 of body, the cooling modulating valve 13 of lubricating oil, lube oil cooler 14, the second road water-exit temperature sensor 15, oil outlet temperature sensor 16, organism temperature sensor 17.
The output terminal of sea water pump 2 divides two-way, one tunnel connects one end of first via sea water regulating valve 3, another road connects one end of the second road sea water regulating valve 4, the first import of the high cryogenic heat exchanger 5 of another termination first via of first via sea water regulating valve 3, and the second outlet of the high cryogenic heat exchanger 5 of the first via is provided with first via water-exit temperature sensor 9, the first outlet of the high cryogenic heat exchanger 5 of the first via is drain opening, the second outlet connects one end of middle water supply pump 6, the first import of another termination intercooler 7 of middle water supply pump 6, the first outlet of intercooler 7 connects the second import of the high cryogenic heat exchanger 5 of the first via, form circulation, the second outlet of intercooler 7 connects the first import of diesel engine 1, and is provided with air outlet temperature sensor 8 in the second outlet of intercooler 7, and the first outlet of diesel engine 1 connects the second import of intercooler 7, forms circulation,
The first import of another termination the second high cryogenic heat exchanger 10 in tunnel of the second road sea water regulating valve 4, the first outlet of the second high cryogenic heat exchanger 10 in tunnel is drain opening, the second outlet connects one end of cooling waterpump 11, and the second outlet of the second high cryogenic heat exchanger 10 in tunnel is provided with the second road water-exit temperature sensor 15, the other end of cooling waterpump 11 divides two-way, pick one end of the cooling modulating valve 12 of body, one road, another road connects one end of the cooling modulating valve 13 of lubricating oil, the first import of another termination lube oil cooler 14 of one end of the cooling modulating valve 13 of lubricating oil, the first outlet of lube oil cooler 14 connects the second import of the second high cryogenic heat exchanger 10 in tunnel, form circulation, the second outlet of lube oil cooler 14 connects the triple feed inlet of diesel engine 1, and the second outlet port at lube oil cooler 14 is provided with oil outlet temperature sensor 16, the second import of another termination diesel engine 1 of the cooling modulating valve 12 of body, the 3rd outlet of diesel engine 1 connects the second import of lube oil cooler 14, forms circulation, on diesel engine 1 body, be provided with organism temperature sensor 17.
Set temperature sensor, lube oil cooler oil outlet set temperature sensor, two high cryogenic heat exchanger water outlet set temperature sensors on intercooler air outlet set temperature sensor, body
Described sea water pump 2 can utilize frequency control of motor speed to regulate total cooling water inflow, first via sea water regulating valve 3 and the second road sea water regulating valve 4 are for the sea water supply amount of independent regulation sea water pump 2, the high cryogenic heat exchanger 5 of the first via provides cooling water for intercooler 7, by intercooler 7, the air after supercharging is cooled to lower than 60 °; The water outlet of the second high cryogenic heat exchanger 10 in tunnel, minute two-way is for the water inlet of the Cooling and Lubricator oil cooler 14 of diesel engine 1 body.The assignment of traffic of two-way, according to cooling requirement, is controlled by first via sea water regulating valve 3 and the second road sea water regulating valve 4 respectively.
As shown in Figure 2, diesel engine cooling controlling method, concrete steps are as follows:
First, record the temperature signal on first via water-exit temperature sensor 9, the second road water-exit temperature sensor 15, air outlet temperature sensor 8, organism temperature sensor 17, oil outlet temperature sensor 16Wu road, after analog to digital conversion circuit is processed, send cpu circuit to.
Secondly, adopt the Flow-rate adjustment formula of setting up, calculate the frequency regulating amount of sea water pump 2, and the regulation amount of first via sea water regulating valve 3, the second road sea water regulating valve 4, the cooling modulating valve 12 of body, the cooling modulating valve 13 of lubricating oil, by cpu circuit, send regulating command to D/A and drive circuit, thereby control sea water pump 2 and four modulating valve.
Finally, cpu circuit, by CAN bus circuit, is communicated by letter with master control system.
As shown in Figure 3, concrete operation step is as follows:
Step (1). the temperature controlling value of setting first via water-exit temperature sensor 9, the second road water-exit temperature sensor 15, air outlet temperature sensor 8, organism temperature sensor 17, oil outlet temperature sensor 16 each points is respectively T
1, T
2, T
3, T
4, T
5.
Step (2). all open first via sea water regulating valve 3, the second road sea water regulating valve 4, the cooling modulating valve 12 of body, the cooling modulating valve of lubricating oil 13 4 modulating valve, i.e. F
1, F
2, F
3, F
4=1; Start the frequency conversion sea water pump of declared working condition, i.e. F
5=50Hz; Water supply pump, cooling waterpump in startup.
Step (3). again measure first via water-exit temperature sensor 9, the second road water-exit temperature sensor 15, air outlet temperature sensor 8, organism temperature sensor 17, oil outlet temperature sensor 16 each point temperature, i.e. t
1, t
2, t
3, t
4, t
5.According to the Flow-rate adjustment formula of setting up, calculate δ (regulated quantity of sea water pump), δ
1(regulated quantity of two-way sea water regulating valve), δ
2(regulated quantity of the cooling modulating valve of body and the cooling modulating valve of lubricating oil):
If δ, δ
1, δ
2≤ 5%, do not do any adjusting, time delay, after 5 minutes, continues to detect the temperature of first via water-exit temperature sensor 9, the second road water-exit temperature sensor 15, air outlet temperature sensor 8, organism temperature sensor 17, oil outlet temperature sensor 16 each points, calculates δ, δ
1, δ
2value, rejudges; Otherwise, δ as F
5the amount of turning down, δ
1as F
1the amount of turning down and F
2the amount of tuning up, δ
2as F
3the amount of turning down and F
4the amount of tuning up, regulate respectively the frequency of sea water pump and the aperture of four modulating valve, time delay is after 5 minutes, continues to detect the temperature of each point, calculates δ, δ
1, δ
2value, rejudges.
The meaning that in Fig. 3, each symbol represents is as follows:
F
1the aperture of-first via sea water regulating valve 3.
F
2the aperture of the-the second road sea water regulating valve 4.
F
3the aperture of the cooling modulating valve 12 of-body.
F
4the aperture of the cooling modulating valve 13 of-lubricating oil.
F
5the frequency of-sea water pump 2 variable-frequency motors.
T
1, t
1temperature controlling value and the checkout value of-first via water-exit temperature sensor 9.
T
2, t
2temperature controlling value and the checkout value of the-the second road water-exit temperature sensor 15.
T
3, t
3temperature controlling value and the checkout value of-air outlet temperature sensor 8.
T
4, t
4temperature controlling value and the checkout value of-organism temperature sensor 17.
T
5。T
5temperature controlling value and the checkout value of-oil outlet temperature sensor 16.
Claims (2)
1. diesel engine cooling control system, comprise diesel engine (1), sea water pump (2), first via sea water regulating valve (3), the second road sea water regulating valve (4), the high cryogenic heat exchanger of the first via (5), middle water supply pump (6), intercooler (7), air outlet temperature sensor (8), first via water-exit temperature sensor (9), the second high cryogenic heat exchanger in tunnel (10), cooling waterpump (11), the cooling modulating valve of body (12), the cooling modulating valve of lubricating oil (13), lube oil cooler (14), the second road water-exit temperature sensor (15), oil outlet temperature sensor (16), organism temperature sensor (17), it is characterized in that:
The output terminal of sea water pump (2) divides two-way, one tunnel connects one end of first via sea water regulating valve (3), another road connects one end of the second road sea water regulating valve (4), the first import of the high cryogenic heat exchanger of another termination first via (5) of first via sea water regulating valve (3), and the second outlet of the high cryogenic heat exchanger of the first via (5) is provided with first via water-exit temperature sensor (9), the first outlet of the high cryogenic heat exchanger of the first via (5) is drain opening, the second outlet connects one end of middle water supply pump (6), the first import of another termination intercooler (7) of middle water supply pump (6), the first outlet of intercooler (7) connects the second import of the high cryogenic heat exchanger of the first via (5), form circulation, the second outlet of intercooler (7) connects the first import of diesel engine (1), and the second outlet at intercooler (7) is provided with air outlet temperature sensor (8), the first outlet of diesel engine (1) connects the second import of intercooler (7), forms circulation,
The first import of another termination the second high cryogenic heat exchanger in tunnel (10) of the second road sea water regulating valve (4), the first outlet of the second high cryogenic heat exchanger in tunnel (10) is drain opening, the second outlet connects one end of cooling waterpump (11), and the second outlet of the second high cryogenic heat exchanger in tunnel (10) is provided with the second road water-exit temperature sensor (15), the other end of cooling waterpump (11) divides two-way, pick one end of the cooling modulating valve of body (12), one road, another road connects one end of the cooling modulating valve of lubricating oil (13), the first import of another termination lube oil cooler (14) of one end of the cooling modulating valve of lubricating oil (13), the first outlet of lube oil cooler (14) connects the second import of the second high cryogenic heat exchanger in tunnel (10), form circulation, the second outlet of lube oil cooler (14) connects the triple feed inlet of diesel engine (1), and be provided with oil outlet temperature sensor (16) in the second outlet port of lube oil cooler (14), the second import of another termination diesel engine (1) of the cooling modulating valve of body (12), the 3rd outlet of diesel engine (1) connects the second import of lube oil cooler (14), forms circulation, on diesel engine (1) body, be provided with organism temperature sensor (17).
2. right to use requires the method for a kind of diesel engine cooling control system described in 1, it is characterized in that comprising following concrete steps:
Step (1). the temperature controlling value of setting first via water-exit temperature sensor (9), the second road water-exit temperature sensor (15), air outlet temperature sensor (8), organism temperature sensor (17), oil outlet temperature sensor (16) each point is respectively T
1, T
2, T
3, T
4, T
5;
Step (2). all open first via sea water regulating valve (3), the second road sea water regulating valve (4), the cooling modulating valve of body (12), the cooling modulating valve of lubricating oil (13) four modulating valve, i.e. F
1, F
2, F
3, F
4=1; Start the frequency conversion sea water pump of declared working condition, i.e. F
5=50Hz; Water supply pump, cooling waterpump in startup;
Step (3). again measure first via water-exit temperature sensor (9), the second road water-exit temperature sensor (15), air outlet temperature sensor (8), organism temperature sensor (17), oil outlet temperature sensor (16) each point temperature, i.e. t
1, t
2, t
3, t
4, t
5; According to the Flow-rate adjustment formula of setting up, calculate δ, δ
1, δ
2:
If δ, δ
1, δ
2≤ 5%, do not do any adjusting, after time delay 5 minutes, continue to detect the temperature of first via water-exit temperature sensor (9), the second road water-exit temperature sensor (15), air outlet temperature sensor (8), organism temperature sensor (17), oil outlet temperature sensor (16) each point, calculate δ, δ
1, δ
2value, rejudges; Otherwise, δ as F
5the amount of turning down, δ
1as F
1the amount of turning down and F
2the amount of tuning up, δ
2as F
3the amount of turning down and F
4the amount of tuning up, regulate respectively the frequency of sea water pump and the aperture of four modulating valve, time delay is after 5 minutes, continues to detect the temperature of each point, calculates δ, δ
1, δ
2value, rejudges.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210282192.0A CN102777251B (en) | 2012-08-09 | 2012-08-09 | Cooling control system of diesel engine, and method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210282192.0A CN102777251B (en) | 2012-08-09 | 2012-08-09 | Cooling control system of diesel engine, and method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN102777251A CN102777251A (en) | 2012-11-14 |
| CN102777251B true CN102777251B (en) | 2014-03-05 |
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| CN202690211U (en) * | 2012-08-09 | 2013-01-23 | 杭州电子科技大学 | Diesel engine cooling control system |
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| JPH09309497A (en) * | 1996-05-25 | 1997-12-02 | Sanshin Ind Co Ltd | Cooling device for outboard motor |
| DE10234087A1 (en) * | 2002-07-26 | 2004-02-05 | Robert Bosch Gmbh | Method for operating a cooling and heating circuit of a motor vehicle and cooling and heating circuit for a motor vehicle |
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|---|---|
| CN102777251A (en) | 2012-11-14 |
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