CN112284748B - Engine cooling system heat dissipation balance test mechanism - Google Patents
Engine cooling system heat dissipation balance test mechanism Download PDFInfo
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- CN112284748B CN112284748B CN202011161829.1A CN202011161829A CN112284748B CN 112284748 B CN112284748 B CN 112284748B CN 202011161829 A CN202011161829 A CN 202011161829A CN 112284748 B CN112284748 B CN 112284748B
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- flow control
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
- G01M15/04—Testing internal-combustion engines
- G01M15/05—Testing internal-combustion engines by combined monitoring of two or more different engine parameters
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
- G01M15/02—Details or accessories of testing apparatus
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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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Testing Of Engines (AREA)
Abstract
The invention discloses a heat dissipation balance test mechanism of an engine cooling system, which comprises an engine assembly, a radiator, a fan heater, an air intake intercooler, a water pump, a first flow control valve, a second flow control valve and a differential pressure regulating valve, wherein: the water outlet of the engine assembly is connected with the water inlet end of the water pump through a first water outlet pipeline and a second water outlet pipeline respectively, and the water outlet end of the water pump is connected with the water inlet of the engine assembly through a water return pipeline; the radiator and the first flow control valve are connected in series on the first water outlet pipeline; the fan heater and the second flow control valve are connected in series on a second water outlet pipeline; an air inlet of the engine assembly is connected with an air inlet pipeline, and an air inlet intercooler and a differential pressure regulating valve are connected in series on the air inlet pipeline; an air outlet of the engine assembly is connected with an air outlet pipeline. According to the invention, the pipes where the radiator, the intercooler and the fan heater are arranged are respectively connected in series with the flow regulating proportional valve to obtain the heat dissipation balance data with different flow pressure difference characteristics, so that the test efficiency is improved.
Description
Technical Field
The invention relates to the field of automobile manufacturing, in particular to a heat dissipation balance test mechanism of an engine cooling system.
Background
When the engine is in operation, the total heat generated by the combustion of fuel generally comprises the following 5 parts: 1. heat of revolution Q e (ii) a 2. Heat Q discharged from exhaust gas ex (ii) a 3. Heat quantity Q taken away by cooling liquid coolant (ii) a 4. Heat Q taken away by air intake intercooler ic (ii) a 5 residual Heat quantity Q r . Wherein the heat taken away by the coolant is transferred to the coolant by the engine water jacket surface, the oil cooler, the EGR, the supercharger, the air compressor, etc.
The purpose of the cooling system heat dissipation balance test is to determine the fuel combustion low heat value distribution proportion of the engine under various working conditions, so that design input is provided for matching a proper radiator, a proper intercooler and a proper warm air blower with the whole vehicle. In order to more accurately match the radiator, the intercooler and the warm air blower, the heat dissipation power and the medium mass flow of the radiator, the air intake intercooler and the warm air blower under each working condition of the engine need to be determined.
In the current heat dissipation balance test mechanism of an engine cooling system, the flow pressure difference of pipelines where a whole vehicle radiator, an intercooler and a fan heater are located cannot be flexibly adjusted, so that the obtained test data are single, and the matching design of various radiators, air inlet intercoolers and fan heaters with different characteristics cannot be realized.
Disclosure of Invention
In order to solve the technical problem, the invention provides a heat dissipation balance test mechanism of an engine cooling system, which has the following specific technical scheme:
the utility model provides an engine cooling system heat dissipation balance test mechanism, its characterized in that, it includes engine assembly, radiator, electric fan heater, admits air intercooler, water pump, first flow control valve, second flow control valve and differential pressure governing valve, wherein:
the water outlet of the engine assembly is connected with the water inlet end of the water pump through a first water outlet pipeline and a second water outlet pipeline respectively, and the water outlet end of the water pump is connected with the water inlet of the engine assembly through a water return pipeline;
the radiator and the first flow control valve are connected in series on the first water outlet pipeline;
the fan heater and the second flow control valve are connected in series on the second water outlet pipeline;
an air inlet of the engine assembly is connected with an air inlet pipeline, and the air inlet intercooler and the differential pressure regulating valve are connected in series on the air inlet pipeline;
and an air outlet of the engine assembly is connected with an air outlet pipeline.
In some embodiments, an air outlet intercooler is arranged on the air outlet pipeline.
In some embodiments, the first flow control valve, the second flow control valve, and the differential pressure regulating valve are PID flow control valves.
According to the invention, the regulating proportional valves are respectively connected in series on the pipelines where the radiator, the intercooler and the fan heater are located to regulate the resistance of the corresponding elements, so that a group of heat dissipation balance data with different flow pressure difference characteristics is obtained, fitting is carried out according to the flow pressure difference characteristics of the radiator, the intercooler and the fan heater of the whole vehicle, the test frequency of the engine matching the whole vehicle is finally reduced, and the test efficiency is improved.
Drawings
Various additional advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings.
FIG. 1 is a schematic flow diagram of a heat dissipation balance test mechanism of an engine cooling system according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the 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 application.
As shown in fig. 1, the heat dissipation balance test mechanism of the engine cooling system provided by the invention comprises an engine assembly 1, a radiator 2, a fan heater 3, an intake intercooler 4, a water pump 5, a first flow control valve 6, a second flow control valve 7 and a differential pressure regulating valve 8, wherein:
the water outlet of the engine assembly 1 is connected with the water inlet end of the water pump 5 through a first water outlet pipeline 11 and a second water outlet pipeline 12 respectively, and the water outlet end of the water pump 5 is connected with the water inlet of the engine assembly 1 through a water return pipeline 13. The radiator 2 and the first flow control valve 6 are connected in series on the first water outlet pipeline 11; the fan heater 3 and the second flow control valve 7 are connected in series on a second water outlet pipeline 12.
The engine assembly 1, the first water outlet pipeline 11, the radiator 2, the first flow control valve 6, the water pump 5 and the water return pipeline 13 form a first closed circulating water channel, low-temperature cooling liquid takes heat in the engine assembly 1 when flowing through the engine assembly 1, and the temperature of the cooling liquid rises. After the cooling liquid flows through the radiator 2 and is cooled by the radiator 2, the cooling liquid flows back to the water pump 5 to be pressurized and then enters the engine assembly 1, and the cooling of the engine assembly 1 is achieved again. Because the radiator 2 and the first flow control valve 6 are connected in series on the first water outlet pipeline 11, the flow pressure difference of the first closed circulating water channel can be adjusted by adjusting the opening of the first flow control valve 6, and in the adjusting process, the corresponding flow, pressure difference and heat dissipation power of the radiator are respectively recorded, so that radiators with different heat dissipation characteristics can be simulated.
Similarly, the engine assembly 1, the second water outlet pipeline 12, the fan heater 3, the second flow control valve 7, the water pump 5 and the water return pipeline 13 form a second closed circulation water channel, when the low-temperature cooling liquid flows through the engine assembly 1, the low-temperature cooling liquid brings away heat in the engine assembly 1, and the temperature of the cooling liquid rises. After flowing through the fan heater 3 and being cooled, the coolant flows back to the water pump 5 to be pressurized and then enters the engine assembly 1, and cooling of the engine assembly 1 is achieved again. Because the fan heater 3 and the second flow control valve 7 are connected in series with the second water outlet pipeline 12, the flow pressure difference of the second closed circulating water channel can be adjusted by adjusting the opening degree of the second water outlet pipeline 12, and in the adjusting process, the corresponding flow rate and pressure difference of the cooling liquid and the heat dissipation power of the heat dissipater are respectively recorded, so that the fan heater 3 with different heat dissipation characteristics can be simulated.
An air inlet of the engine assembly 1 is connected with an air inlet pipeline 14, an air inlet intercooler 4 and a pressure difference regulating valve 8 are connected on the air inlet pipeline 14 in series, air flows into the engine assembly 1 through the air inlet pipeline 14, and the air inlet intercooler 4 achieves air inlet cooling. The flow pressure difference of the air inlet pipeline 14 can be adjusted by adjusting the opening degree of the pressure difference adjusting valve 8, and in the adjusting process, the corresponding air inlet flow, the pressure difference and the heat dissipation power are respectively recorded, so that the air inlet intercooler 4 with different cooling performances can be simulated.
An air outlet of the engine assembly 1 is connected with an air outlet pipeline 15, and waste gas discharged by the engine assembly 1 is discharged through the air outlet pipeline 15.
Optionally, the first flow control valve 6, the second flow control valve 7 and the differential pressure regulating valve 8 in the present invention all use PID flow control valves.
Optionally, the exhaust gas treatment device 9 is disposed on the exhaust pipeline 15 in the present invention.
In some embodiments, the engine cooling system heat dissipation balance test mechanism of the present invention is tested as follows:
and respectively testing the universal characteristic heat dissipation balance parameters of the first flow control valve 6, the second flow control valve 7 and the differential pressure regulating valve 8 under the condition of the maximum opening according to universal characteristic test requirements.
By adjusting the opening degree of the first flow control valve 6, 90%, 80%, 70%, 60% and 50% of the flow rate of the cooling liquid in the first water outlet pipeline 11 is obtained when the flow rate of the cooling liquid reaches the maximum opening degree of the first flow control valve 6, and the heat dissipation balance test with universal characteristics under five conditions is repeated to obtain the heat dissipation balance data and the flow pressure difference curve of the system under each flow rate of the cooling liquid.
And adjusting the opening degree of the second flow control valve 7 to enable the flow rate of the cooling liquid in the second water outlet pipeline 12 to reach 90%, 80%, 70%, 60% and 50% of the flow rate corresponding to the maximum opening degree of the second flow control valve 7, and repeating the heat dissipation balance test with universal characteristics under five conditions to obtain heat dissipation balance data and a flow pressure difference curve of the system under each flow rate of the cooling liquid.
And adjusting the opening degree of the differential pressure regulating valve 8 to ensure that the air inlet differential pressure reaches 110%, 120%, 130%, 140% and 150% of the corresponding differential pressure when the maximum opening degree of the second flow control valve 7, and repeatedly performing universal characteristic heat dissipation balance tests under five conditions to obtain air inlet intercooler balance data and flow differential pressure curves of the system under various air inlet differential pressures.
And finally, arranging all the characteristic test data of each group, and realizing matching design and model selection of the radiator, the air intake intercooler and the fan heater when subsequently matching various types of whole vehicles.
While the invention has been described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (3)
1. The utility model provides an engine cooling system heat dissipation balance test mechanism, its characterized in that, it includes engine assembly, radiator, electric fan heater, admits air intercooler, water pump, first flow control valve, second flow control valve and third flow control valve, wherein:
the water outlet of the engine assembly is connected with the water inlet end of the water pump through a first water outlet pipeline and a second water outlet pipeline respectively, and the water outlet end of the water pump is connected with the water return port of the engine assembly through a water return pipeline;
the radiator and the first flow control valve are connected in series on the first water outlet pipeline; the first flow control valve is used for adjusting the flow pressure difference of the first closed circulating water path so as to simulate radiators with different heat dissipation characteristics;
the fan heater and the second flow control valve are connected in series on the second water outlet pipeline; the second flow control valve is used for adjusting the flow pressure difference of the second closed circulating water path so as to simulate the fan heaters with different heat dissipation characteristics;
an air inlet of the engine assembly is connected with an air inlet pipeline, and the air inlet intercooler and the third flow control valve are connected to the air inlet pipeline in series; the third flow control valve is used for adjusting the flow pressure difference of the air inlet pipeline so as to simulate an air inlet intercooler with different cooling performances;
and an air outlet of the engine assembly is connected with an air outlet pipeline.
2. The engine cooling system heat dissipation balance test mechanism of claim 1, wherein a tail gas treatment device is disposed on the gas outlet pipeline.
3. The engine cooling system heat dissipation balance test mechanism of claim 1, wherein the first flow control valve, the second flow control valve, and the third flow control valve are PID flow control valves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011161829.1A CN112284748B (en) | 2020-10-27 | 2020-10-27 | Engine cooling system heat dissipation balance test mechanism |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011161829.1A CN112284748B (en) | 2020-10-27 | 2020-10-27 | Engine cooling system heat dissipation balance test mechanism |
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| Publication Number | Publication Date |
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| CN112284748A CN112284748A (en) | 2021-01-29 |
| CN112284748B true CN112284748B (en) | 2023-04-07 |
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Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101975661B (en) * | 2010-10-19 | 2012-09-26 | 中国人民解放军军事交通学院 | Heat-balance performance high-altitude simulation test table of engine |
| JP5484289B2 (en) * | 2010-11-05 | 2014-05-07 | 三機工業株式会社 | Engine cooling water circulation system for testing |
| CN104390785B (en) * | 2014-10-28 | 2017-05-10 | 北京新能源汽车股份有限公司 | Test stand for pure electric automobile cooling system |
| CN107271191B (en) * | 2017-06-29 | 2019-02-22 | 奇瑞汽车股份有限公司 | Engine Heat Balance test method |
| CN107478431A (en) * | 2017-09-27 | 2017-12-15 | 中国第汽车股份有限公司 | Engine current test measurement device |
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