CN106150658A - Cooling control method in diesel engine of diesel locomotive cooling water system separate type - Google Patents
Cooling control method in diesel engine of diesel locomotive cooling water system separate type Download PDFInfo
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- CN106150658A CN106150658A CN201610741696.2A CN201610741696A CN106150658A CN 106150658 A CN106150658 A CN 106150658A CN 201610741696 A CN201610741696 A CN 201610741696A CN 106150658 A CN106150658 A CN 106150658A
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- temperature
- water
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- cooling
- diesel engine
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P7/00—Controlling of coolant flow
- F01P7/14—Controlling of coolant flow the coolant being liquid
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B29/00—Engines characterised by provision for charging or scavenging not provided for in groups F02B25/00, F02B27/00 or F02B33/00 - F02B39/00; Details thereof
- F02B29/04—Cooling of air intake supply
- F02B29/0406—Layout of the intake air cooling or coolant circuit
- F02B29/0437—Liquid cooled heat exchangers
- F02B29/0443—Layout of the coolant or refrigerant circuit
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P7/00—Controlling of coolant flow
- F01P7/14—Controlling of coolant flow the coolant being liquid
- F01P2007/146—Controlling of coolant flow the coolant being liquid using valves
-
- 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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
Abstract
The invention discloses cooling control method in a kind of diesel engine of diesel locomotive cooling water system separate type, including 2 chilled(cooling) water return (CWR)s, for high temperature cooling water loop and middle chilled water circuit, high temperature cooling water loop includes high-temperature water pump, diesel engine, high temperature heat sink, middle chilled water circuit includes middle water supply pump, charge air cooler, middle cold heat sink, described high temperature cooling water loop and middle chilled water circuit are connected by valve A and valve B, the two ends of described valve A connect respectively in cold water delivery side of pump and the entrance of high-temperature water pump, the two ends of described valve B connect high-temperature water delivery side of pump and the entrance of middle water supply pump respectively, valve A is controlled by valve control device A, valve B is controlled by valve control device B, control computer export control signal to valve control device A and valve control device B, temperature sensor detection diesel engine hot outlet water temperature T, it is transferred to detection signal control computer；Can play a positive role with reducing discharge to improving diesel engine performance.
Description
Technical field
The present invention relates to diesel engine of diesel locomotive cooling water system control field, be specifically related to a kind of diesel engine of diesel locomotive
Cooling control method in cooling water system separate type.
Background technology
The cooling water system of diesel locomotive turbo-charged diesel divides high-temperature cooling water system and middle chilled water system (middle cold water
System is also referred to as low-temperature cooling water system), high-temperature cooling water system and middle chilled water system are that two completely self-contained cooling water follow
Loop systems.The radiator of cooling water system is separately designed by two completely self-contained blood circulation when design, diesel oil
After machine starts, high-temperature water pump and middle water supply pump are started working, and the water inlet manifold of cooling water input diesel engine, cooling water are subject to by water pump
After heat heats up, outfall sewer flow out, flow in the radiator of locomotive chiller, cooling fans drive air carry out cold
But.Flow through the cooling water after radiator cooling, flow back to high-temperature water pump and middle water supply pump, the most constantly reciprocation cycle.
The highest ambient temperature and the diesel engine performance experiment heat of gained, the diesel engine height of operating mode is used by diesel locomotive
The relevant parameter such as cooling water inlet water temperature limit value, pump capacity in temperature coolant outlet water temperature limit value, diesel engine, by heat exchange meter
Calculate, calculate the size of radiator needed for diesel engine high-temperature cooling water system and middle chilled water system respectively, and on this basis
The requirement that locomotive normally uses is met for each surplus of reserved 10% of high temperature heat sink and middle cold heat sink.
The intake air temperature of diesel engine charge air cooler is controlled when 50 DEG C～55 DEG C, diesel engine performance can be improved and reduce row
Putting, this is well-known.The air inlet of diesel engine charge air cooler is cooled down by middle chilled water system, in other words, by diesel engine
Middle cooling water inlet water temperature control below 45 DEG C, can effectively improve diesel engine performance and reduce discharge.But, use existing
(the middle cooling water inlet water temperature limit value of diesel engine leads to have technology, when design, the middle cooling water inlet water temperature of diesel engine is set in 45 DEG C
Often more than 60 DEG C), middle cold heat sink can be very big, is so difficult to real in diesel locomotive at full stretch is arranged in space
Existing.
The method for designing of this prior art can ensure that the normal utilization of locomotive, but cannot improve diesel engine performance and subtract
Few discharge.Along with global energy shortage and environment, the problem such as pollution drastically influence economic development and the mankind in the whole world
Living environment.Energy-saving and environmental protection problem is gradually brought into schedule, it is clear that for using today of energy-saving and environmental protection theory, prior art
Method for designing cannot meet requirement.
Summary of the invention
The present invention provides cooling control method in a kind of diesel engine of diesel locomotive cooling water system separate type, locomotive practice
In the highest ambient temperature seldom occur and locomotive is not to work the most under full capacity, ambient temperature is the lowest or locomotive makes fortune
The least with power, the surplus of the heat-sinking capability of high temperature heat sink and middle cold heat sink is the biggest.At this moment the heat radiation energy of high-temperature cooling water
Power is superfluous, the superfluous heat-sinking capability of high-temperature cooling water is applied in middle chilled water system, to improve diesel engine performance and
Reduce discharge can play a positive role.
The technical solution adopted in the present invention is cooling control method in diesel engine of diesel locomotive cooling water system separate type, bag
Including 2 chilled(cooling) water return (CWR)s, for high temperature cooling water loop and middle chilled water circuit, high temperature cooling water loop includes high-temperature water pump, diesel oil
Machine, high temperature heat sink, middle chilled water circuit includes middle water supply pump, charge air cooler, middle cold heat sink, described high temperature cooling water loop and
Middle chilled water circuit is connected by valve A and valve B, the two ends of described valve A connect respectively in cold water delivery side of pump and high-temperature water pump
Entrance, the two ends of described valve B connect high-temperature water delivery side of pump and the entrance of middle water supply pump respectively, and valve A is controlled by valve control device A,
Valve B is controlled by valve control device B, controls computer export control signal to valve control device A and valve control device B, temperature sensor detection diesel oil
Machine hot outlet water temperature T, is transferred to detection signal control computer；
Arranging T1 is that temperature opened by valve, and when diesel engine hot outlet water temperature T, < during T1, valve A and valve B closes, high-temperature cooling water
Loop and middle chilled water circuit independent loops, high temperature cooling water loop consumes conventional cooling capacity, and remaining cooling capacity is divided
Chilled water circuit in dispensing；As diesel engine hot outlet water temperature T=T1, control computer activation valve control device A and valve control device B and open
Valve A and valve B, the coolant that some relative temperatures in middle chilled water circuit are low flows to high temperature cooling water loop, meanwhile, high temperature cooling
Chilled water circuit in the coolant flow direction that in water loop, the relative temperature of same volume is high, the cooling set in cold heat sink in a part
Ability effectively shifts the coolant in cooling down high-temperature chilled(cooling) water return (CWR)；
When diesel engine hot outlet water temperature T > T1 time, valve A and valve B gradually leaves greatly, convection rate increase, make high-temperature cooling water
In the range of the temperature of the coolant of loop and middle chilled water circuit is maintained at the design temperature limit of permission；When diesel engine operates in demarcation
During the highest ambient temperature 40 DEG C, the limit value of diesel engine high-temperature cooling water exit water temperature is 98 DEG C, cooling water inlet water temperature in diesel engine
Limit value be 65 DEG C.
Temperature T1 opened by described valve is 90 DEG C.
The invention has the beneficial effects as follows that the environmental requirement for locomotive development is improved, at the cooling water system of diesel locomotive
System uses cooling control method in diesel engine of diesel locomotive cooling water system separate type, and the present invention is rationally applied, in advance
Meter fuel consumption can reduce the percentage point of 2-3, and NOx emission about reduces 8-12 percentage point, improves diesel engine performance.
Accompanying drawing explanation
Fig. 1 is cooling control method theory diagram in diesel engine of diesel locomotive cooling water system separate type.
Fig. 2 is 3 kinds of working state figures of cooling control method in diesel engine of diesel locomotive cooling water system separate type.
Detailed description of the invention
Being described further invention in conjunction with accompanying drawing 1 and accompanying drawing 2, in locomotive practice, the highest ambient temperature is little
Occurring and locomotive is not to work the most under full capacity, ambient temperature is the lowest or locomotive uses power the least, and high temperature dispels the heat
The surplus of the heat-sinking capability of device and middle cold heat sink is the biggest.At this moment the heat-sinking capability of high-temperature cooling water is superfluous, if can handle
The heat-sinking capability of this part surplus is applied in middle chilled water system, it is clear that can play long-pending to improving diesel engine performance with reducing discharge
The effect of pole.
The present invention is applied to the cooling water system of turbo-charged diesel, define a kind of when radiator and fan dimension true
Set when cooling capacity exceedes demand empty to strengthen charge air cooler air inlet with the ability to a part of cooling capacity in fixed cooling water system
The cooling of gas, the charge air cooler cooling of enhancing can improve diesel engine performance and reduce discharge.The cooling capacity of locomotive depends primarily on
Radiator and the size of cooling fan, and under the highest ambient temperature conditions used and diesel engine power is the most negative to design locomotive
Can be by diesel engine, the temperature of coolant be cooled to acceptable scope under conditions of lotus.On the other hand, locomotive operation is not
Cooling capacity required under the highest ambient temperature conditions or when diesel engine power is relatively low can be less than design of Cooling System
Maximum one.So, radiator just has superfluous cooling capacity.How to utilize the superfluous cooling capacity of this part in cold
In device cooling down diesel engine intake is the key of the present invention.
The present invention program is as follows: during design, and the cooling capacity of high temperature heat sink can only meet diesel engine total power, environment temperature
Cooling under the conditions of spending 25 DEG C, now diesel engine high-temperature cooling water exit water temperature is 98 DEG C of (diesel engine high-temperature cooling water water outlet
The limit value of temperature is 98 DEG C).Under the conditions of the cooling capacity of middle cold heat sink can meet diesel engine total power, ambient temperature 25 DEG C
Cooling, now in diesel engine, cooling water inlet water temperature is 45 DEG C (in diesel engine, the limit value of cooling water inlet water temperature is 65 DEG C), if changed
Calculating cooling water inlet water temperature in diesel engine is 65 DEG C, and the surplus of middle cold heat sink is about about 150%.According to radiator, fan and
Water pump size, it may be determined that diesel engine hot outlet water temperature T reaches a ceiling temperature that will not endanger locomotive reliability service
T1 (usual T1 is about 90 DEG C), this temperature T1 is referred to as valve and opens temperature, and the unlatching temperature of valve A and valve B, Fig. 2 is diesel oil
Machine hot outlet water temperature T greater than, equal to, less than valve open temperature T1 three kinds of duties under block diagram, permissible from Fig. 1
Find out, when temperature sensor measurement diesel engine high-temperature cooling water exit water temperature T less than T1 time, high temperature cooling water loop and in cold
Water loop independent loops, now most of the total cooling capacity of system distributes to middle chilled water system, strengthens charge air cooler air inlet
The cooling of air.When the diesel engine high-temperature cooling water exit water temperature T of temperature sensor measurement is equal to T1, controlling computer will
Activate valve control device and open connection valve (valve A and valve B).Owing to opening connection valve, some relative temperatures in middle chilled water circuit
Low coolant flows to high temperature cooling water loop, meanwhile, the cooling that in high temperature cooling water loop, the relative temperature of same volume is high
Liquid stream is to middle chilled water circuit.Along with the rising of the hot outlet water temperature T of temperature sensor measurement, connect valve and open bigger and bigger, convection current
Speed is also increasing, and finally makes the temperature of the coolant of high temperature cooling water loop and middle chilled water circuit be maintained at the design temperature of permission
In the range of limit.It practice, by this convective mass transfer, the cooling capacity set in cold heat sink in a part effectively shifts cold
But the coolant in high temperature cooling water loop.When diesel engine operates in the highest ambient temperature 40 DEG C of demarcation, diesel oil can be made
Machine hot outlet water temperature is less than 98 DEG C, and middle cooling water inlet water temperature is less than 65 DEG C, makes high temperature cooling water loop and middle chilled water circuit
In the range of coolant is maintained at diesel engine the highest acceptable cooling liquid temperature limit.
Using this kind of inventive method, the cooling capacity set in system can distribute to different loops in a controlled manner.
When the temperature of the surroundings is low, in the range of the cooling capacity of high temperature cooling water loop can make diesel engine be operated in intended temperature limit, and
Remaining cooling capacity can all distribute cooling inlet air.When ambient temperature is higher, distribute to high temperature cooling water loop
Cooling capacity can increase necessarily to keep high temperature cooling loop in the range of intended temperature limits, accordingly, cold in distributing to
The cooling capacity of water loop can reduce.The essential attributes of the present invention is through convection current and controls to the distribution realizing cooling capacity.
As it is shown in figure 1, there are two chilled(cooling) water return (CWR)s in system, a cooling for high-temperature cooling water, another is used for
The cooling of middle cold water.High temperature cooling water loop includes high-temperature water pump, diesel engine, high temperature heat sink etc..During middle chilled water circuit includes
Water supply pump, charge air cooler, middle cold heat sink etc..Cooling fan forces middle cold heat sink and high temperature heat sink to ventilate.Can from Fig. 1
Go out, have two valves (valve A and valve B) to connect high temperature cooling water loop and middle chilled water circuit.It is controlled by the valve control device controlling computer
Control the unlatching of these valves.Cold water delivery side of pump and the entrance of high-temperature water pump in valve A connection, similar, valve B connects high-temperature water
Delivery side of pump and the entrance of middle water supply pump.System unit is by following design: when diesel engine hot outlet water temperature T is less than 90 DEG C, valve A
Completely close with valve B, there is no convection current.The transmission of coolant is not had, as two independent loops are the most each between cooling circuit
Self-operating, now high temperature cooling water loop consumes conventional cooling capacity, and remaining cooling capacity distributes to middle chilled water circuit.
When diesel engine hot outlet water temperature T reaches 90 DEG C, valve A and valve B open, the cooling water that the relative temperature of middle chilled water circuit is relatively low
The high-temperature water pump entrance that pressure is relatively low can be flowed to from the middle water supply pump outlet that pressure is higher.On the contrary, the phase of high temperature cooling water loop
The water of same volume can from high-temperature water delivery side of pump flows to the entrance of water supply pump.At steady-state, return from high-temperature cooling water
Road flows to the high coolant volume of the relative temperature of middle chilled water circuit and flows to high temperature cooling water loop equal to therefrom chilled water circuit
The coolant that relative temperature is low.Although being identical from the convection rate in a loop to another loop Yu inverse process, but
Due to the difference of the temperature of the coolant in loop, cause the heat output from a loop to another loop different.Thus, just
Existing from high temperature cooling loop to the heat-conducting of middle chilled water circuit, this is also the key technology of the present invention.
Claims (2)
1. cooling control method in diesel engine of diesel locomotive cooling water system separate type, it is characterised in that: include that 2 cooling water return
Road, for high temperature cooling water loop and middle chilled water circuit, high temperature cooling water loop includes high-temperature water pump, diesel engine, high temperature heat sink,
Middle chilled water circuit includes that middle water supply pump, charge air cooler, middle cold heat sink, described high temperature cooling water loop and middle chilled water circuit pass through
Valve A and valve B connect, the two ends of described valve A connect respectively in cold water delivery side of pump and the entrance of high-temperature water pump, described valve B
Two ends connect high-temperature water delivery side of pump and the entrance of middle water supply pump respectively, valve A is controlled by valve control device A, and valve B is controlled by valve control device
B, controls computer export control signal and detects diesel engine hot outlet water temperature T to valve control device A and valve control device B, temperature sensor,
It is transferred to detection signal control computer；
Arranging T1 is that temperature opened by valve, and when diesel engine hot outlet water temperature T, < during T1, valve A and valve B closes, high temperature cooling water loop
With middle chilled water circuit independent loops, high temperature cooling water loop consumes conventional cooling capacity, and remaining cooling capacity is distributed to
Middle chilled water circuit；As diesel engine hot outlet water temperature T=T1, control computer activation valve control device A and valve control device B and open valve A
With valve B, the coolant that some relative temperatures in middle chilled water circuit are low flows to high temperature cooling water loop, meanwhile, high-temperature cooling water
Chilled water circuit in the coolant flow direction that in loop, the relative temperature of same volume is high, the cooling energy set in cold heat sink in a part
Power effectively shifts the coolant in cooling down high-temperature chilled(cooling) water return (CWR)；
When diesel engine hot outlet water temperature T > T1 time, valve A and valve B gradually leaves greatly, convection rate increase, make high temperature cooling water loop
Be maintained at the design temperature limit of permission with the temperature of the coolant of middle chilled water circuit in the range of；When diesel engine operates in the highest of demarcation
During ambient temperature 40 DEG C, the limit value of diesel engine high-temperature cooling water exit water temperature is 98 DEG C, the limit of cooling water inlet water temperature in diesel engine
Value is 65 DEG C.
Cooling control method in diesel engine of diesel locomotive cooling water system separate type the most according to claim 1, its feature exists
In: temperature T1 opened by described valve is 90 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610741696.2A CN106150658A (en) | 2016-08-29 | 2016-08-29 | Cooling control method in diesel engine of diesel locomotive cooling water system separate type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610741696.2A CN106150658A (en) | 2016-08-29 | 2016-08-29 | Cooling control method in diesel engine of diesel locomotive cooling water system separate type |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106150658A true CN106150658A (en) | 2016-11-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610741696.2A Pending CN106150658A (en) | 2016-08-29 | 2016-08-29 | Cooling control method in diesel engine of diesel locomotive cooling water system separate type |
Country Status (1)
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| CN (1) | CN106150658A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108223100A (en) * | 2017-12-29 | 2018-06-29 | 中车唐山机车车辆有限公司 | Overhead type combustion power assembly cooling system |
| CN109989820A (en) * | 2019-04-23 | 2019-07-09 | 常州轻工职业技术学院 | Double-mode cooling water system and its working method |
| CN111828160A (en) * | 2020-07-24 | 2020-10-27 | 中车大连机车车辆有限公司 | System and method for improving cooling effect of engine and vehicle comprising system |
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| DE3708351A1 (en) * | 1987-03-14 | 1988-06-01 | Mtu Friedrichshafen Gmbh | Forced circulation cooling system |
| CN102797551A (en) * | 2011-05-25 | 2012-11-28 | 福特环球技术公司 | Cooling arrangement for a chargeable internal combustion engine |
| CN104011343A (en) * | 2011-12-23 | 2014-08-27 | 斯堪尼亚商用车有限公司 | Arrangement and method for cooling of coolant in cooling system in vehicle |
| CN204060891U (en) * | 2014-07-18 | 2014-12-31 | 安庆中船柴油机有限公司 | A kind of diesel engine cooling system |
| CN104797793A (en) * | 2012-12-10 | 2015-07-22 | 瓦锡兰芬兰有限公司 | Cooling system and method for an internal combustion engine |
| EP3023609A1 (en) * | 2014-11-20 | 2016-05-25 | MAN Truck & Bus AG | Cooling system for a vehicle, in particular a commercial vehicle |
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2016
- 2016-08-29 CN CN201610741696.2A patent/CN106150658A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3708351A1 (en) * | 1987-03-14 | 1988-06-01 | Mtu Friedrichshafen Gmbh | Forced circulation cooling system |
| CN102797551A (en) * | 2011-05-25 | 2012-11-28 | 福特环球技术公司 | Cooling arrangement for a chargeable internal combustion engine |
| CN104011343A (en) * | 2011-12-23 | 2014-08-27 | 斯堪尼亚商用车有限公司 | Arrangement and method for cooling of coolant in cooling system in vehicle |
| CN104797793A (en) * | 2012-12-10 | 2015-07-22 | 瓦锡兰芬兰有限公司 | Cooling system and method for an internal combustion engine |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108223100A (en) * | 2017-12-29 | 2018-06-29 | 中车唐山机车车辆有限公司 | Overhead type combustion power assembly cooling system |
| CN108223100B (en) * | 2017-12-29 | 2020-03-24 | 中车唐山机车车辆有限公司 | Overhead type internal combustion power assembly cooling system |
| CN109989820A (en) * | 2019-04-23 | 2019-07-09 | 常州轻工职业技术学院 | Double-mode cooling water system and its working method |
| CN111828160A (en) * | 2020-07-24 | 2020-10-27 | 中车大连机车车辆有限公司 | System and method for improving cooling effect of engine and vehicle comprising system |
| CN111828160B (en) * | 2020-07-24 | 2021-10-08 | 中车大连机车车辆有限公司 | System and method for improving cooling effect of engine and vehicle comprising system |
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Application publication date: 20161123 |