CN114109577A - Engine waste heat management system and use method thereof - Google Patents
Engine waste heat management system and use method thereof Download PDFInfo
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- CN114109577A CN114109577A CN202111328201.0A CN202111328201A CN114109577A CN 114109577 A CN114109577 A CN 114109577A CN 202111328201 A CN202111328201 A CN 202111328201A CN 114109577 A CN114109577 A CN 114109577A
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- engine
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- liquid
- liquid outlet
- water
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- 239000002918 waste heat Substances 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 75
- 239000007788 liquid Substances 0.000 claims abstract description 67
- 239000000110 cooling liquid Substances 0.000 claims abstract description 27
- 238000001816 cooling Methods 0.000 claims abstract description 14
- 239000007789 gas Substances 0.000 claims description 6
- 238000011084 recovery Methods 0.000 claims description 6
- 238000011144 upstream manufacturing Methods 0.000 claims description 2
- 239000002826 coolant Substances 0.000 description 7
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000006467 substitution reaction Methods 0.000 description 3
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229920002545 silicone oil Polymers 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000004781 supercooling Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P3/00—Liquid cooling
- F01P3/20—Cooling circuits not specific to a single part of engine or machine
-
- 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
- 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
- F02B29/0493—Controlling the air charge temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02G—HOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS; USE OF WASTE HEAT OF COMBUSTION ENGINES; NOT OTHERWISE PROVIDED FOR
- F02G5/00—Profiting from waste heat of combustion engines, not otherwise provided for
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
- F02M26/22—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage
- F02M26/23—Layout, e.g. schematics
- F02M26/28—Layout, e.g. schematics with liquid-cooled heat exchangers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
- F02M26/22—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage
- F02M26/33—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage controlling the temperature of the recirculated gases
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20218—Modifications to facilitate cooling, ventilating, or heating using a liquid coolant without phase change in electronic enclosures
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20218—Modifications to facilitate cooling, ventilating, or heating using a liquid coolant without phase change in electronic enclosures
- H05K7/20281—Thermal management, e.g. liquid flow control
-
- 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
Landscapes
- 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)
- Microelectronics & Electronic Packaging (AREA)
- Exhaust-Gas Circulating Devices (AREA)
Abstract
The invention relates to the technical field of waste heat utilization, in particular to an engine waste heat management system and a using method thereof. The waste heat management system comprises an engine body, an engine water pump and a heat exchanger, wherein a liquid outlet of the engine water pump is communicated with a liquid inlet of the engine body, a liquid outlet of the engine body is communicated with a liquid inlet of the engine water pump, a liquid outlet of the engine water pump is communicated with a liquid inlet of the heat exchanger, a liquid outlet of the heat exchanger is respectively communicated with an EGR cooler, an electrified accessory and a water air cooler, and the EGR cooler, the electrified accessory and the water air cooler are respectively communicated with a liquid inlet of the engine water pump; the use method comprises the steps of introducing the cooling liquid into the heat exchanger for cooling, and then exchanging heat between the cooled cooling liquid and the EGR cooler, the electrified accessory and the water-air intercooler. The invention cools the cooling liquid by arranging the heat exchanger; the low-temperature cooling liquid can be distributed to an EGR cooler, a water air intercooler and an electrified accessory, and the cooling requirements of all systems are met.
Description
Technical Field
The invention relates to the technical field of waste heat utilization, in particular to an engine waste heat management system and a using method thereof.
Background
The air of a supercharger of a diesel engine, an EGR system, an electric motor and other electrical accessories need to be cooled by coolant.
At present the booster air cools off through arranging the air-air intercooler at the radiator front end, and cooling efficiency can be subject to factors such as radiator size, fan and ambient temperature and restrict, and the promotion of cooling efficiency also can lead to the increase of air-air intercooler resistance simultaneously. In addition, after the supercharged air is cooled, the ideal temperature before entering the cylinder is about 40 ℃, the cooling capacity of the conventional air-air intercooler is adjusted only by an electric control fan, so that the temperature after intercooling is difficult to maintain at about 40 ℃, and the economical efficiency of the engine is influenced. And the energy is directly dissipated into the air through heat dissipation, so that energy is wasted.
At present, in the cooling of the EGR system and the electrical accessories, a method of cooling the EGR system and the electrical accessories in series or in parallel in an engine cooling water circuit by using engine coolant is generally adopted, and the cooled coolant is discharged into the air through a radiator, so that energy waste and a greenhouse effect are caused.
Generally, the temperature of the engine coolant after cooling is about 90-110 ℃, and the coolant directly enters the engine water pump to be pressurized, so that the power consumption of the water pump is increased.
Therefore, in order to utilize the waste heat of the engine coolant, it is necessary to provide an engine waste heat management system and a use method thereof.
Disclosure of Invention
Aiming at the problems of high temperature of the pressurized air cooled by an air-air intercooler and waste of cooling waste heat, the invention provides an engine waste heat management system and a using method thereof, wherein a heat exchanger is arranged to cool cooling liquid, so that the temperature of the cooling liquid is reduced to 40-45 ℃ from about 105 ℃, and the heat exchange quantity can be used for recovering electric energy; through setting up second water route control valve and third water route control valve, distribute microthermal coolant liquid to EGR cooler, water air intercooler and electrified annex, satisfy each system cooling requirement.
In a first aspect, the invention provides an engine waste heat management system, which comprises an engine body, an engine water pump and a heat exchanger, wherein a liquid outlet of the engine water pump is communicated with a liquid inlet of the engine body, a liquid outlet of the engine body is communicated with a liquid inlet of the engine water pump, a liquid outlet of the engine water pump is further communicated with a liquid inlet of the heat exchanger through a first water path control valve, a liquid outlet of the heat exchanger is communicated with a liquid inlet of an EGR cooler through a second water path control valve, a liquid outlet of the heat exchanger is communicated with a liquid inlet of an electrified accessory through a third water path control valve, a liquid outlet of the heat exchanger is further communicated with a liquid inlet of a water air cooler, and a liquid outlet of the EGR cooler, a liquid outlet of the electrified accessory and a liquid outlet of the water air cooler are respectively communicated with a liquid inlet of the engine water pump.
Furthermore, a check valve is arranged on a connecting pipeline between a liquid outlet of the engine body and a liquid inlet of the engine water pump, and the check valve is used for preventing cooling liquid discharged by the EGR cooler, the electrified accessory and the water air cooler from flowing backwards into a cooling system of the engine body.
Further, the electrified accessory is an electric motor and/or a controller.
Further, still include the radiator, the liquid outlet of engine water pump and the inlet intercommunication of radiator, the liquid outlet of radiator and the inlet intercommunication of engine body, first water route control valve arranges in engine water pump low reaches, radiator upper reaches.
Further, a fan is arranged on the engine body.
Further, the heat exchanger is a heat exchanger with a waste heat recovery unit. The waste heat generated by the engine EGR cooler, the supercharged air and the electrified accessories can be recovered into electric energy through the heat exchanger integrated with the waste heat recovery unit, so that the energy is saved.
In a second aspect, the invention provides a use method of the engine waste heat management system, which is specifically characterized in that cooling liquid cooled by an engine body is introduced into a heat exchanger through a first waterway control valve, the heat exchanger cools the cooling liquid, then the cooling liquid cooled by the heat exchanger exchanges heat with an EGR cooler, an electrified accessory and a water air intercooler respectively, and then the cooling liquid enters the cooling system of the engine body through an engine water pump again; wherein, the temperature of the cooling liquid cooled by the heat exchanger is kept between 30 and 40 ℃, the temperature of the exhaust gas cooled by the EGR cooler is kept between 110 and 130 ℃, and the temperature of the pressurized air cooled by the water air intercooler is kept between 40 and 45 ℃.
Further, the using method further comprises the following steps: and adjusting the second waterway control valve and the third waterway control valve to control the flow of the cooling liquid in the EGR cooler, the electrified accessory and the water-air intercooler.
The invention has the beneficial effects that:
in a first aspect, the engine waste heat management system provided by the invention can realize low-temperature cooling of the supercharged gas and the electrified accessories, is beneficial to performance improvement of the engine and reliability of the electrified accessories, is beneficial to miniaturization of an EGR (exhaust gas recirculation) system, and saves cost.
In a second aspect, the use method of the engine waste heat management system provided by the invention limits the temperature of the exhaust gas cooled by the EGR cooler to be kept at 110-130 ℃, can avoid the reliability problem of the EGR system caused by overheating and supercooling, and simultaneously considers the performance; the cooled charge air is limited to be kept at 40-45 ℃, and the performance of the engine is optimal.
Drawings
In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present invention, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
Fig. 1 is a schematic connection diagram of an engine waste heat management system according to embodiment 1.
In the figure, 1-an engine body, 2-an engine water pump, 3-a radiator, 4-an electronic control silicon oil fan, 5-a check valve, 6-a first water path control valve, 7-a waste heat recovery unit, 8-a heat exchanger, 9-a second water path control valve, 10-an EGR cooler, 11-a third water path control valve, 12-an electrified accessory and 13-a water air cooler.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment of the present invention, and it is obvious that the described embodiment is only a part of the embodiment of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
An engine waste heat management system comprises an engine body 1, an engine water pump 2 and a radiator 3, wherein an electric control silicone oil fan 4 is arranged on the engine body 1, a liquid outlet of the engine water pump 2 is respectively communicated with a liquid inlet of the engine body 1 and a liquid inlet of the radiator 3, a liquid outlet of the radiator 3 is communicated with a liquid inlet of the engine body 1, a liquid outlet of the engine body 1 is communicated with a liquid inlet of the engine water pump 2, a check valve 5 is arranged on a connecting pipeline between the liquid outlet of the engine body 1 and the liquid inlet of the engine water pump 2, the liquid outlet of the engine water pump 2 is also communicated with a liquid inlet of a heat exchanger 8 with a waste heat recovery unit 7 through a first water path control valve 6, the first water path control valve 6 is arranged at the downstream of the engine water pump 2 and at the upstream of the radiator 3, a liquid outlet of the heat exchanger 8 is communicated with a liquid inlet of an EGR cooler 10 through a second water path control valve 9, the liquid outlet of the heat exchanger 8 is communicated with the liquid inlet of an electrified accessory 12 (such as a motor, a controller and the like) to be cooled through a third water path control valve 11, the liquid outlet of the heat exchanger 8 is also communicated with the liquid inlet of a water air cooler 13, and the liquid outlet of the EGR cooler 10, the liquid outlet of the electrified accessory 12 and the liquid outlet of the water air cooler 13 are respectively communicated with the liquid inlet of the engine water pump 2.
The engine waste heat management system of embodiment 1 can be applied to an MC11/MC13 series engine.
Example 2
An application method of the engine waste heat management system in the embodiment 1 is characterized in that cooling liquid cooled by an engine body 1 is introduced into a heat exchanger 8 through a first water path control valve 6, the opening of the first water path control valve 6 is adjusted to control the flow of the cooling liquid for heat exchange, the heat exchanger 8 cools the cooling liquid, and the heat exchange of the heat exchanger 8 is adjusted by controlling the heat exchange amount of a waste heat recovery unit 7, so that the temperature of the cooling liquid at the downstream of the heat exchanger 8 is always maintained at 30-40 ℃; then the cooling liquid exchanges heat with the EGR cooler 10, the electrified accessory 12 and the water-air intercooler 13 respectively, the opening degrees of the second water path control valve 9 and the third water path control valve 11 are adjusted, the flow rates of the cooling liquid in the EGR cooler 10, the electrified accessory 12 and the water-air intercooler 13 are controlled, the temperature of the exhaust gas cooled by the EGR cooler 10 is kept at 110-130 ℃, and the temperature of the pressurized air cooled by the water-air intercooler 13 is kept at 40-45 ℃; and then the heat-exchanged cooling liquid is mixed in front of the engine water pump 2, so that compared with the traditional method that the engine cooling liquid is circulated only among the engine body 1, the engine water pump 2, the EGR cooler 10 and the radiator 3, the liquid inlet temperature of the engine water pump 2, the heat dissipation capacity requirement of the radiator 3 and the power consumption of the electric control silicone oil fan 4 are reduced.
Although the present invention has been described in detail by referring to the drawings in connection with the preferred embodiments, the present invention is not limited thereto. Various equivalent modifications or substitutions can be made on the embodiments of the present invention by those skilled in the art without departing from the spirit and scope of the present invention, and these modifications or substitutions are within the scope of the present invention/any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention.
Claims (8)
1. The utility model provides an engine waste heat management system, its characterized in that, includes engine body (1), engine water pump (2) and heat exchanger (8), the liquid outlet of engine water pump (2) and the inlet intercommunication of engine body (1), the liquid outlet of engine body (1) and the inlet intercommunication of engine water pump (2), the liquid outlet of engine water pump (2) still communicates with the inlet of heat exchanger (8) through first water route control valve (6), the liquid outlet of heat exchanger (8) communicates with the inlet of EGR cooler (10) through second water route control valve (9), the liquid outlet of heat exchanger (8) communicates with the inlet of electronic annex (12) through third water route control valve (11), the liquid outlet of heat exchanger (8) still communicates with the inlet of water air intercooler (13), the liquid outlet of EGR cooler (10), The liquid outlet of the electrified accessory (12) and the liquid outlet of the water air intercooler (13) are respectively communicated with the liquid inlet of the engine water pump (2).
2. The engine waste heat management system according to claim 1, characterized in that a check valve (5) is arranged on a connecting pipeline between the liquid outlet of the engine body (1) and the liquid inlet of the engine water pump (2).
3. The engine waste heat management system of claim 1, characterized in that the electrified accessory (12) is an electric machine and/or a controller.
4. The engine waste heat management system according to claim 1, further comprising a radiator (3), wherein a liquid outlet of the engine water pump (2) is communicated with a liquid inlet of the radiator (3), a liquid outlet of the radiator (3) is communicated with a liquid inlet of the engine body (1), and the first water path control valve (6) is arranged at the downstream of the engine water pump (2) and at the upstream of the radiator (3).
5. The engine waste heat management system according to claim 1, characterized in that a fan is provided on the engine block (1).
6. The engine waste heat management system according to claim 1, characterized in that the heat exchanger (8) is provided with a waste heat recovery unit (7).
7. The use method of the engine waste heat management system is characterized in that the cooling liquid cooled by the engine body (1) is introduced into the heat exchanger (8) through the first water path control valve (6), the heat exchanger (8) cools the cooling liquid, then the cooling liquid cooled by the heat exchanger (8) exchanges heat with the EGR cooler (10), the electrified accessory (12) and the water-air intercooler (13) respectively, and then the cooling liquid enters the cooling system of the engine body (1) through the engine water pump (2) again; wherein, the temperature of the cooling liquid cooled by the heat exchanger (8) is kept between 30 and 40 ℃, the temperature of the exhaust gas cooled by the EGR cooler (10) is kept between 110 and 130 ℃, and the temperature of the pressurized air cooled by the water air cooler (13) is kept between 40 and 45 ℃.
8. The method of use of claim 7, further comprising: and adjusting the second water path control valve (9) and the third water path control valve (11) to control the flow of the cooling liquid in the EGR cooler (10), the electrified accessory (12) and the water-air cooler (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111328201.0A CN114109577A (en) | 2021-11-10 | 2021-11-10 | Engine waste heat management system and use method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111328201.0A CN114109577A (en) | 2021-11-10 | 2021-11-10 | Engine waste heat management system and use method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114109577A true CN114109577A (en) | 2022-03-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111328201.0A Pending CN114109577A (en) | 2021-11-10 | 2021-11-10 | Engine waste heat management system and use method thereof |
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| CN (1) | CN114109577A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115324706A (en) * | 2022-10-14 | 2022-11-11 | 潍柴动力股份有限公司 | Engine cooling water circulation system and control method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115324706A (en) * | 2022-10-14 | 2022-11-11 | 潍柴动力股份有限公司 | Engine cooling water circulation system and control method thereof |
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