CN109209613A - A kind of vehicle cooling system flow rate test structures and methods - Google Patents

A kind of vehicle cooling system flow rate test structures and methods Download PDF

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Publication number
CN109209613A
CN109209613A CN201811408558.8A CN201811408558A CN109209613A CN 109209613 A CN109209613 A CN 109209613A CN 201811408558 A CN201811408558 A CN 201811408558A CN 109209613 A CN109209613 A CN 109209613A
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China
Prior art keywords
automobile
engine
cooling system
flow rate
coolant line
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CN201811408558.8A
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CN109209613B (en
Inventor
李�杰
方华
王臻华
张华楠
汪勇
黄旭兴
张乐乐
尹传军
邹珂
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Anhui Jianghuai Automobile Group Corp
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Anhui Jianghuai Automobile Group Corp
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Priority to CN201811408558.8A priority Critical patent/CN109209613B/en
Publication of CN109209613A publication Critical patent/CN109209613A/en
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01PCOOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P11/00Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
    • F01P11/14Indicating devices; Other safety devices
    • F01P11/18Indicating devices; Other safety devices concerning coolant pressure, coolant flow, or liquid-coolant level

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Testing Of Engines (AREA)

Abstract

A kind of vehicle cooling system flow rate test structure, comprising: the engine being arranged within automobile and the flowmeter being arranged in except the automobile, the lengthening coolant line being arranged in except the automobile, described one end for lengthening coolant line is connected with the engine, its other end is connected with the radiator being arranged within the automobile, a kind of corresponding method is provided simultaneously, the engine is measured respectively in cold state and under heat engine state, each revolving speed point coolant rate, its lengthening coolant line form for passing through disposed outside, it is big to solve flowmeter internal resistance, flowmeter installation space on vehicle it is limited and can not complete measurement engine every speed section coolant rate the problem of.

Description

A kind of vehicle cooling system flow rate test structures and methods
Technical field
The present invention is about a kind of vehicle cooling system flow rate test structures and methods.
Background technique
With the progress of human society, automobile becomes common consumer product from luxury goods.The cooling of automobile cooling system Can and air conditioning performance be used as vehicle environmental adaptive criteria, not only decision engine can work normally for a long time, winter whether It can satisfy client's heating demand etc., also influence client to the subjective feeling of vehicle, be the intuitive performance of automobile product power.
In the matched design of cooling system cooling performance and air-conditioning system heating performance, coolant rate be one very Crucial parameter, is influenced by cooling system internal resistance, engine water pump performance and engine speed etc..Such as cannot accurately it input The parameter, meeting causes frequently to rectify and improve and verify due to the error that parameter inputs, and then brings the increase of design cost and open The extension for sending out the period, is unfavorable for the quick exploitation of product.Therefore, coolant rate parameter is accurately obtained, matched design is improved Precision is very important link in automobile matched design.
In the prior art, although engine coolant flow measurement may be implemented, due to vane-wheel type flowmeter internal resistance compared with Greatly, flow rate test accuracy is poor;Engine speed range is wider, and corresponding range of flow is also wide.In this scenario, vane type stream For meter in higher flow measurement range, internal resistance is smaller to can satisfy requirement.But due to the big characteristic of its low speed flow resistance, cause Measurement accuracy when engine speed is lower is poor, causes certain flow meters that can only measure within the scope of its flow rate test a certain section Interior flow.It is embodied in the test of engine coolant rate and shows themselves in that the coolant liquid that can only measure a certain revolving speed section Flow, and can not completely measure the coolant rate in engine every speed section;Since vane-wheel type flowmeter internal resistance is larger, It cannot be using the structure for lengthening coolant line.Therefore, when measuring engine cool flow quantity on the basis of vehicle, most of feelings Under condition, flowmeter installation is carried out without sufficient space.
Summary of the invention
The purpose of the present invention is: overcome prior art defect, solves that flowmeter internal resistance is big, flowmeter is installed on vehicle Limited space and can not complete measurement engine every speed section coolant rate the problem of.
To realize the above-mentioned technical purpose, the present invention provides a kind of vehicle cooling system flow rate test structure comprising: arrangement Engine within automobile and the flowmeter being arranged in except the automobile, in which: further include being arranged in except the automobile Lengthening coolant line, it is described lengthen coolant line one end be connected with the engine, the other end be arranged in institute The radiator within automobile is stated to be connected.
The present invention passes through the lengthening coolant line form of disposed outside, and inline flow meter is simultaneously measured accordingly, solves Flowmeter internal resistance of having determined is big, flowmeter installation space on vehicle is limited and can not complete measurement engine every speed section it is cold But the problem of flow quantity.
As a further improvement, except the automobile, arranged in series has vent valve in the lengthening coolant line.
As a further improvement, except the automobile, arranged in series has transparent pipe in the lengthening coolant line.
As a further improvement, the bending part crooked process radius of the coolant line is greater than 6 times of the coolant liquid The diameter of pipeline, and caliber structure is even variation to maintain the pressure even variation in it in the coolant line.
As a further improvement, the import of the flowmeter has the straight pipe more than or equal to 10 times of its interior electrical path lengths, The outlet of the flowmeter has the straight pipe more than or equal to 2 times of its interior electrical path lengths, and the diameter of the coolant line is greater than Equal to the diameter of the flowmeter.
As a further improvement, it is disposed with temperature sensor at the import and export pipeline of the engine, to detect water It is mild to determine thermostat working condition.
As a further improvement, the position of the expansion tank in the automobile is higher than the highest of the coolant line Point;It when filling coolant liquid, is carried out under heat engine state, and the coolant liquid should be added to the maximum scale of the expansion tank Line.
As a further improvement, the flow is calculated as electromagnetic type flow meter and is horizontally arranged.
As a further improvement, the revolving speed of the engine is controlled by the ECU in the automobile, the fluctuation of speed exists Within the scope of ± 20rpm, and the engine is measured respectively in cold state and under heat engine state, each revolving speed point cools down liquid stream Amount.
It is used as corresponding technical solution simultaneously, the present invention also provides a kind of vehicle cooling system flow rate test method, packets The flowmeter for including offer: being arranged in the engine within automobile and be arranged in except the automobile further includes providing:
The lengthening coolant line being arranged in except the automobile, described one end for lengthening coolant line are started with described Machine is connected, and the other end is connected with the radiator being arranged within the automobile;
The revolving speed of the engine is controlled by the ECU in the automobile, the fluctuation of speed within the scope of ± 20rpm, and The engine is measured respectively in cold state and under heat engine state, each revolving speed point coolant rate.
The flow rate test technical solution is the pattern by electromagnetic type flow meter by lengthening coolant line, is connected on cold But it in liquid pipeline, is measured under engine cold state and heat engine state (thermostat does not open/standard-sized sheet) respectively, each revolving speed point coolant liquid Flow facilitates detection.
Detailed description of the invention
Fig. 1 is connection schematic diagram of the present invention.
Appended drawing reference: 1 automobile, 2 engines, 3 flowmeters, 4 lengthen coolant line, 5 vent valves, 6 transparent pipes, 7 heat dissipations Device.
Specific embodiment
As shown in Figure 1, the present invention provides a kind of vehicle cooling system flow rate test structure comprising: be arranged in automobile 1 it Interior engine 2 and the flowmeter 3 being arranged in except the automobile 1, in which: further include being arranged in adding except the automobile 1 Long coolant line 4, it is described lengthen coolant line 4 one end be connected with the engine 2, the other end be arranged in described in Radiator 7 within automobile 1 is connected.
The present invention passes through 4 form of lengthening coolant line of disposed outside, and inline flow meter 3 is simultaneously measured accordingly, Solve that flowmeter internal resistance is big, installation space is limited on vehicle and can not complete measurement engine every speed section for flowmeter The problem of coolant rate.
As a further improvement, except the automobile 1, arranged in series has deflation in the lengthening coolant line 4 Valve 5.
As a further improvement, except the automobile 1, there is transparent arranged in series in the lengthening coolant line 4 Pipe 6.
As a further improvement, the bending part crooked process radius of the coolant line 4 is greater than 6 times of the coolant liquid The diameter of pipeline 4, and caliber structure is even variation to maintain the pressure even variation in it in the coolant line 4.
As a further improvement, the import of the flowmeter 3 has the straight pipe more than or equal to 10 times of its interior electrical path lengths, The outlet of the flowmeter 3 has the straight pipe more than or equal to 2 times of its interior electrical path lengths, and the diameter of the coolant line 4 is big In the diameter for being equal to the flowmeter 3.
As a further improvement, it is disposed with temperature sensor at the import and export pipeline of the engine 2, to detect water It is mild to determine thermostat working condition.
As a further improvement, the position of the expansion tank in the automobile 1 is higher than the highest of the coolant line 4 Point;It when filling coolant liquid, is carried out under heat engine state, and the coolant liquid should be added to the maximum scale of the expansion tank Line.
As a further improvement, the flowmeter 3 is electromagnetic type flow meter and is horizontally arranged.
As a further improvement, the revolving speed of the engine 2, the fluctuation of speed are controlled by the ECU in the automobile 1 Within the scope of ± 20rpm, and the engine 2 is measured respectively in cold state and under heat engine state, each revolving speed point coolant liquid Flow.
It is used as corresponding technical solution simultaneously, the present invention also provides a kind of vehicle cooling system flow rate test method, packets The flowmeter 3 for including offer: being arranged in the engine 2 within automobile 1 and be arranged in except the automobile 1 further includes providing:
The lengthening coolant line 4 being arranged in except the automobile 1, it is described lengthen coolant line 4 one end with it is described Engine 2 is connected, and the other end is connected with the radiator 7 being arranged within the automobile 1;
The revolving speed of the engine 2 is controlled by the ECU in the automobile 1, the fluctuation of speed within the scope of ± 20rpm, And the engine 2 is measured respectively in cold state and under heat engine state, each revolving speed point coolant rate.
The flow rate test technical solution is the pattern by electromagnetic type flow meter by lengthening coolant line, is connected on cold But it in liquid pipeline, is measured under engine cold state and heat engine state (thermostat does not open/standard-sized sheet) respectively, each revolving speed point coolant liquid Flow facilitates detection.
In the preferred technical solution of the present invention, flowmeter is connected in coolant line, it is desirable that:
1, extension pipe bending part crooked process radius is greater than 6 times of pipeline diameters;
2, it lengthens in pipeline, the structure that no caliber suddenly change etc. causes system pressure to change;
3, flowmeter import guarantees electrical path length straight pipe in 10 times, and outlet guarantees electrical path length straight pipe in 2 times;
4, measurement pipeline diameter cannot be less than flowmeter diameter;
5, temperature sensor should be arranged in engine the import and export pipeline simultaneously, to detect water temperature, determine thermostat work shape State;
6, expansion tank should be improved, its position is made to be higher than cooling line highest point.Meanwhile filling coolant liquid When, it is carried out under heat engine state, to guarantee the enough filling of coolant liquid, air is avoided to impact measurement result.Coolant liquid is answered Add to expansion tank max graduation mark.
7, flowmeter should be placed according to its requirement, avoided electromagnetic interference, engine from uttering long and high-pitched sounds etc. and impacted to it.Together When, flowmeter should be horizontally arranged as far as possible, and avoid vibrating.
8, as far as possible by ECU control engine speed, if manual control revolving speed, also should ensure that the fluctuation of speed ± Within the scope of 20rpm.Measurement engine cold state and (thermostat does not open/standard-sized sheet) under heat engine state, each revolving speed point are cooling respectively Flow quantity.
Pressure sensor measurement pipe is arranged with radiator coolant import as previously mentioned, can export in engine coolant Road water resistance is compared with sample car original state water resistance, is eliminated water resistance that may be present in pipeline restructuring and is increased to flow rate test knot It is influenced caused by fruit;Transparent pipe can be accessed in each extension pipeline, with the whether enough filling of auxiliary judgment coolant liquid;It can be Vent valve is accessed in each pipeline extreme higher position that extends, the air in pipeline is smoothly discharged;It can install and cut in each extension pipeline Only valve simulates large and small cycles, solves summer temp and increases very fast, partial circulating testing time deficiency problem.
The present invention designs the method that cooling system flow is measured on the basis of vehicle, can meet and set The purpose of parameter is accurately provided when meter input.Entire test macro is restructured by pipeline, using means such as electromagnetic type flow meters, is taken The platform for measuring cooling system flow on the basis of vehicle has been built, and has measured each revolving speed point cooling system under cold and heat engine state System flow, forms this engine-cooling system flow distribution database.Engine flow distribution data obtained by this test method Library, can for vehicle under high temperature environment cooling system matching and low temperature environment under air-conditioning heating, defrosting, demister system matching set Meter provides the accurate data input of coolant rate, can effectively improve design matching precision.
It should be appreciated that invention which is intended to be protected is not limited to non-limiting embodiments, it should be understood that non-limiting embodiment party Case is illustrated as just example.The protection scope of the desired essence of the application is more embodied in independent claims offer Range and its dependent claims.

Claims (10)

1. a kind of vehicle cooling system flow rate test structure comprising: the engine (2) and arrangement being arranged within automobile (1) Flowmeter (3) except the automobile (1), it is characterised in that:
It further include the lengthening coolant line (4) being arranged in except the automobile (1), the one of lengthening coolant line (4) End is connected with the engine (2), and the other end is connected with the radiator (7) being arranged within the automobile (1).
2. a kind of vehicle cooling system flow rate test structure as described in claim 1, it is characterised in that: in the automobile (1) Except, arranged in series has vent valve (5) in the lengthening coolant line (4).
3. a kind of vehicle cooling system flow rate test structure as described in claim 1, it is characterised in that: in the automobile (1) Except, arranged in series has transparent pipe (6) in the lengthening coolant line (4).
4. a kind of vehicle cooling system flow rate test structure as described in claim 1, it is characterised in that: the coolant line (4) diameter of the coolant line (4) of the bending part crooked process radius greater than 6 times, and pipe in the coolant line (4) Gauge structure is even variation to maintain the pressure even variation in it.
5. a kind of vehicle cooling system flow rate test structure as described in claim 1, it is characterised in that: the flowmeter (3) Import there is the straight pipe more than or equal to 10 times of its interior electrical path lengths, the outlet of the flowmeter (3) have be more than or equal to 2 times its The straight pipe of interior electrical path length, and the diameter of the coolant line (4) is more than or equal to the diameter of the flowmeter (3).
6. a kind of vehicle cooling system flow rate test structure as described in claim 1, it is characterised in that: in the engine (2) it is disposed with temperature sensor at the import and export pipeline, to detect water temperature and determine thermostat working condition.
7. a kind of vehicle cooling system flow rate test structure as described in claim 1, it is characterised in that: in the automobile (1) Expansion tank position be higher than the coolant line (4) highest point;When filling coolant liquid, under heat engine state into It goes, and the coolant liquid should be added to the maximum scale line of the expansion tank.
8. a kind of vehicle cooling system flow rate test structure as described in claim 1, it is characterised in that: the flowmeter (3) For electromagnetic type flow meter and it is horizontally arranged.
9. a kind of vehicle cooling system flow rate test structure as described in claim 1, it is characterised in that: pass through the automobile (1) ECU in controls the revolving speed of the engine (2), and the fluctuation of speed measures the hair within the scope of ± 20rpm respectively Motivation (2) is in cold state and under heat engine state, each revolving speed point coolant rate.
10. a kind of vehicle cooling system flow rate test method comprising provide: the engine (2) that is arranged within automobile (1) and The flowmeter (3) being arranged in except the automobile (1), it is characterised in that: further include providing:
The lengthening coolant line (4) being arranged in except the automobile (1), described one end for lengthening coolant line (4) and institute It states engine (2) to be connected, the other end is connected with the radiator (7) being arranged within the automobile (1);
The revolving speed of the engine (2) is controlled by ECU in the automobile (1), the fluctuation of speed within the scope of ± 20rpm, And the engine (2) is measured respectively in cold state and under heat engine state, each revolving speed point coolant rate.
CN201811408558.8A 2018-11-23 2018-11-23 Flow test structure and method for whole vehicle cooling system Active CN109209613B (en)

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CN201811408558.8A CN109209613B (en) 2018-11-23 2018-11-23 Flow test structure and method for whole vehicle cooling system

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CN201811408558.8A CN109209613B (en) 2018-11-23 2018-11-23 Flow test structure and method for whole vehicle cooling system

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4601264A (en) * 1984-05-18 1986-07-22 Nissan Motor Co., Ltd. Cooling system for automotive engine
CN102877925A (en) * 2012-06-13 2013-01-16 浙江吉利汽车研究院有限公司杭州分公司 Engine cooling circulating system and controlling method thereof
CN105352733A (en) * 2015-12-12 2016-02-24 哈尔滨东安汽车动力股份有限公司 Novel hot and cold impact test method for automobile engine
CN205936806U (en) * 2016-08-30 2017-02-08 广西玉柴机器股份有限公司 State detection device in engine internal cooling water route
CN107478431A (en) * 2017-09-27 2017-12-15 中国第汽车股份有限公司 Engine current test measurement device
EP3330512A1 (en) * 2016-12-01 2018-06-06 Iveco Magirus Ag Cooling system of an internal combustion engine

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4601264A (en) * 1984-05-18 1986-07-22 Nissan Motor Co., Ltd. Cooling system for automotive engine
CN102877925A (en) * 2012-06-13 2013-01-16 浙江吉利汽车研究院有限公司杭州分公司 Engine cooling circulating system and controlling method thereof
CN105352733A (en) * 2015-12-12 2016-02-24 哈尔滨东安汽车动力股份有限公司 Novel hot and cold impact test method for automobile engine
CN205936806U (en) * 2016-08-30 2017-02-08 广西玉柴机器股份有限公司 State detection device in engine internal cooling water route
EP3330512A1 (en) * 2016-12-01 2018-06-06 Iveco Magirus Ag Cooling system of an internal combustion engine
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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