CN106198043A - A kind of vehicle air conditioner refrigerant filling volume calibration method - Google Patents
A kind of vehicle air conditioner refrigerant filling volume calibration method Download PDFInfo
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- CN106198043A CN106198043A CN201610478228.0A CN201610478228A CN106198043A CN 106198043 A CN106198043 A CN 106198043A CN 201610478228 A CN201610478228 A CN 201610478228A CN 106198043 A CN106198043 A CN 106198043A
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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
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
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Abstract
The invention discloses a kind of vehicle air conditioner refrigerant filling volume calibration method, first the accurate environmental simulation storehouse for simulating vehicle actual motion state is provided, is used for recovery and the refrigerant recovery charging machine of charging refrigerant and for collecting temperature and the data collecting instrument of pressure data；Vehicle is fixed in accurate environmental simulation storehouse, vehicle is made to run under default operating mode, it is filled with quantitative cold-producing medium at predetermined time intervals, and passes through to blow each air outlet temperature of face and outer circulation inlet temperature in data collecting instrument gathers condensator outlet pressure, condensator outlet temperature, car respectively；Calculate the degree of supercooling of condensator outlet, and draw condensator outlet degree of supercooling and condensator outlet pressure and refrigerant charge relation curve, be then calculated the optimal refrigerant charge of air conditioning system.The vehicle air conditioner refrigerant filling volume calibration method of the present invention can substantially shorten scalar period, greatly enhances the degree of accuracy that cold-producing medium is demarcated.
Description
Technical field
The invention belongs to automotive air-conditioning system refrigerant charge test method technical field, be specifically related to a kind of automobile empty
Adjust refrigerant charge scaling method.
Background technology
The determination of automotive air-conditioning system refrigerant charge mainly has system emulation computational methods, Bench test methods and whole
Car test method, first two is only used as researching and analysing, and the determination of final charging amount must be determined by complete vehicle test.For how
Determine that car air conditioner refrigerant Optimal refrigerant charge, current domestic automobile and air conditioning system maker do not have a unified test mark
Standard, judges the most varied to final result.Along with the Overcold condenser extensive application in automotive air-conditioning system, relevant
The research and probe of practitioner, it is well recognized that use degree of supercooling and pressure to determine, charging amount is a quick method accurately.
Owing to the test of car load charging amount needs a stable environmental condition, complete in environment storehouse or wind-tunnel so test is usually.
It is the highest that this results in experimentation cost, finds a test method the shortest and has just become a thing highly significant
Feelings.
Summary of the invention
The present invention is to solve that existing refrigerant charge scaling method is complicated and degree of accuracy is the highest defect provides
It is a kind of that scalar period is short, degree of accuracy is high and the simple vehicle air conditioner refrigerant filling volume calibration method of method.
The present invention solves that above-mentioned technical problem adopts the following technical scheme that, a kind of vehicle air conditioner refrigerant filling volume is demarcated
Method, it is characterised in that concretely comprise the following steps:
Step 1, test preparatory stage
There is provided the accurate environmental simulation storehouse for simulating vehicle actual motion state, for reclaiming and the cold-producing medium of charging refrigerant
Reclaim the machine of filling and for collecting temperature and the data collecting instrument of pressure data；
Step 2, data acquisition phase
Vehicle is fixed in accurate environmental simulation storehouse, makes vehicle run under default operating mode, at predetermined time intervals by refrigeration
Agent is reclaimed the machine of filling and is filled with quantitative cold-producing medium to air conditioning system, and gathers condensator outlet pressure respectively by data collecting instrument
Each air outlet temperature of face and outer circulation inlet temperature is blown in power, condensator outlet temperature, car；
Step 3, optimal refrigerant charge determine the stage
The condensator outlet pressure gathered according to data collecting instrument and condensator outlet temperature, calculate the supercool of condensator outlet
Degree, and draw condensator outlet degree of supercooling and condensator outlet pressure and refrigerant charge relation curve, find out in curve
Degree of supercooling platform, calculates the optimal refrigerant charge of air conditioning system according to formula a=b-0.2*c, and wherein a is air conditioning system
Optimal refrigerant charge, b is the refrigerant charge that degree of supercooling platform most end point is corresponding, and c is degree of supercooling platform correspondence system
The difference of cryogen charging amount.
Further preferably, the accurate environmental simulation storehouse described in step 1 is a closing storehouse, is provided with Temperature and Humidity Control system in it
System, VMC (Ventilation Mechanical Control System), power-measuring system, tail gas discharge system and sunlight analog systems, wherein temperature and humidity control system is used for controlling envelope
Closing the temperature and humidity in storehouse, VMC (Ventilation Mechanical Control System) air discharge in controlling closing storehouse, head-on vehicle to be measured is located at by blower fan
Headstock opposite, face velocity during for providing vehicle actual motion, power-measuring system is located at vehicle bottom to be measured, is run for giving
Vehicle load running resistance and measure speed, tail gas discharge system is for collecting the tail gas in vehicle operation, sunlight mould
Plan system is located at vehicle up direction to be measured, is used for controlling light radiation intensity.
Further preferably, the detailed process of step 2 is: put into by vehicle in accurate environmental simulation storehouse, will by fixing device
Vehicle chassis is fixed on dynamometer machine, is connected with gas emission device by exhaust emissions cylinder, tackles vehicle to be measured before on-test
Air conditioning system checks, it is ensured that air conditioning system can normally work, and ensures temperature cycles air door and internal-external cycle throttle energy
Normal work, it is ensured that air conditioning system inner compressor oil is in design point, takes out air conditioning system very before filling cold-producing medium
Empty pressurize, the dwell time is not less than 20 minutes, it is ensured that air conditioning system is without revealing, and test preparation makes vehicle preset after completing
Run under operating mode, open to engine-cooling system thermostat, it is ensured that the condenser air quantity under all refrigerant charges is consistent,
Vehicle initiates refrigerant charge and designs refrigerant charge for system and deduct 200g, if system design refrigerant charge deducts
More than 300g after 200g, then with 300g for initial cold-producing medium adding amount, every 10min charging refrigerant in process of the test, treat sky
Adjusting system operate steadily afterwards by data collecting instrument gather respectively condensator outlet pressure corresponding to each refrigerant charge,
Blow each air outlet temperature of face and outer circulation inlet temperature in condensator outlet temperature, car, be filled with when degree of supercooling is less than 0 DEG C every time
The amount of cold-producing medium is 50g, and it is 25g that degree of supercooling is filled with the amount of cold-producing medium more than 0 DEG C later every time.
The present invention compared with prior art has the advantage that the vehicle air conditioner refrigerant filling volume calibration method of the present invention
Can substantially shorten scalar period, greatly enhance the degree of accuracy that cold-producing medium is demarcated.
Accompanying drawing explanation
Fig. 1 be the condensator outlet degree of supercooling of the embodiment of the present invention and condenser pressure bent with refrigerant charging magnitude relation
Line.
Detailed description of the invention
By the following examples the foregoing of the present invention is described in further details, but this should be interpreted as this
The scope inventing above-mentioned theme is only limitted to below example, and all technology realized based on foregoing of the present invention belong to this
Bright scope.
Embodiment
1, the test preparatory stage
There is provided one for the accurate environmental simulation storehouse of simulating vehicle actual motion state, one for reclaim and charging refrigerant
Refrigerant recovery charging machine and one for collecting temperature and the data collecting instrument of pressure.
Described accurate environmental simulation storehouse is a closing storehouse, is provided with temperature and humidity control system, VMC (Ventilation Mechanical Control System), measurement of power system in it
System, tail gas discharge system, sunlight analog systems and data collecting system, wherein temperature and humidity control system is used for controlling to close in storehouse
Temperature and humidity, VMC (Ventilation Mechanical Control System) closes the air discharge in storehouse for controlling, and head-on the headstock pair of vehicle to be measured is located at by blower fan
Face, face velocity during for providing vehicle actual motion, power-measuring system is located at vehicle bottom to be measured, for giving the vehicle run
Loading running resistance and measure speed, tail gas discharge system is for collecting the tail gas in vehicle operation, sunlight analog systems
Being located at vehicle up direction to be measured, be used for controlling light radiation intensity, data collecting system placement sensor in collection vehicle is surveyed
The temperature and pressure data of amount.
2, data acquisition phase
Vehicle is put in accurate environmental simulation storehouse, by fixing device, vehicle is fixed on chassis dynamometer, by exhaust emissions
Cylinder is connected with gas emission device, tackled vehicle air conditioner to be measured and checks, it is ensured that air conditioning system can be just before on-test
Often work, and ensure that temperature cycles air door can normally work with internal-external cycle throttle, it is ensured that air conditioning system inner compressor oil is in
Design point, carries out evacuation pressurize to air conditioning system before filling cold-producing medium, and the dwell time is not less than 20 minutes, it is ensured that air-conditioning
System is without revealing.
The operating mode that environment and vehicle working condition are adjusted in following table:
Test preparation makes vehicle run under default operating mode after completing, and opens to engine-cooling system thermostat, it is ensured that
Condenser air quantity under all refrigerant charges is consistent, and vehicle initiates refrigerant charge and designs refrigerant charge for system
Deduct 200g, if system design refrigerant charge is more than 300g after deducting 200g, then with 300g for initial refrigerant charge,
Every 10min charging refrigerant in process of the test, treat air conditioning system to operate steadily afterwards and gathered respectively often by data collecting instrument
Each air outlet temperature of face and outer is blown in condensator outlet pressure that individual refrigerant charge is corresponding, condensator outlet temperature, car
Circulation inlet temperature, the amount being every time filled with cold-producing medium when degree of supercooling is less than 0 DEG C is 50g, and degree of supercooling is filled with more than 0 DEG C later every time
The amount of cold-producing medium is 25g.
3, optimal refrigerant charge determines the stage
The condensator outlet pressure gathered according to data collecting instrument and condensator outlet temperature, calculate the supercool of condensator outlet
Degree, and draw condensator outlet degree of supercooling and condensator outlet pressure and refrigerant charge relation curve, find out in curve
Degree of supercooling platform, calculates the optimal refrigerant charge of air conditioning system according to formula a=b-0.2*c, and wherein a is air conditioning system
Optimal refrigerant charge, b is the refrigerant charge that degree of supercooling platform most end point is corresponding, and c is degree of supercooling platform correspondence system
The difference of cryogen charging amount.
As it is shown in figure 1, choose first flex point on degree of supercooling curve in Fig. 1 to be defined as A point, second flex point is defined as B
Point, section A-B is degree of supercooling platform, and on degree of supercooling platform, degree of supercooling deviation should be stablized within 2 DEG C.The determination method of A point: this
Refrigerant charge corresponding to point is compared with last time refrigerant charge, and corresponding degree of supercooling has substantially rising, freezes with next time
Agent charging amount is compared, and corresponding degree of supercooling and pressure are without significant change.B point determines method: this puts corresponding refrigerant charge
Compared with last time refrigerant charge, corresponding degree of supercooling is without significant change, compared with next time refrigerant charge, and corresponding mistake
Cold degree and pressure rise bigger.Analyze and actual tests data analysis, in FIG A-B according to automotive air-conditioning system work theory
In the range of section refrigerant charging, air conditioning system refrigerating capacity is stable, has reached optimum Working, so optimal refrigerant charge
Should be in this interval.Consider slip and the filing provision problem of air conditioning system, it is determined that optimal refrigerant charge is as follows:
The refrigerant charge that B point is corresponding deducts the 20% of degree of supercooling platform correspondence refrigerant charge difference and is optimal refrigerant charging
Fluence, being calculated optimal refrigerant charge is 455g, and optimal refrigerant charge determines, whole test completes.
Embodiment above describes the ultimate principle of the present invention, principal character and advantage, the technical staff of the industry should
Understanding, the present invention is not restricted to the described embodiments, and the simply explanation present invention's described in above-described embodiment and description is former
Reason, under the scope without departing from the principle of the invention, the present invention also has various changes and modifications, and these changes and improvements each fall within
In the scope of protection of the invention.
Claims (3)
1. a vehicle air conditioner refrigerant filling volume calibration method, it is characterised in that concretely comprise the following steps:
Step 1, test preparatory stage
There is provided the accurate environmental simulation storehouse for simulating vehicle actual motion state, for reclaiming and the cold-producing medium of charging refrigerant
Reclaim the machine of filling and for collecting temperature and the data collecting instrument of pressure data；
Step 2, data acquisition phase
Vehicle is fixed in accurate environmental simulation storehouse, makes vehicle run under default operating mode, at predetermined time intervals by refrigeration
Agent is reclaimed the machine of filling and is filled with quantitative cold-producing medium to air conditioning system, and gathers condensator outlet pressure respectively by data collecting instrument
Each air outlet temperature of face and outer circulation inlet temperature is blown in power, condensator outlet temperature, car；
Step 3, optimal refrigerant charge determine the stage
The condensator outlet pressure gathered according to data collecting instrument and condensator outlet temperature, calculate the supercool of condensator outlet
Degree, and draw condensator outlet degree of supercooling and condensator outlet pressure and refrigerant charge relation curve, find out in curve
Degree of supercooling platform, calculates the optimal refrigerant charge of air conditioning system according to formula a=b-0.2*c, and wherein a is air conditioning system
Optimal refrigerant charge, b is the refrigerant charge that degree of supercooling platform most end point is corresponding, and c is degree of supercooling platform correspondence system
The difference of cryogen charging amount.
Vehicle air conditioner refrigerant filling volume calibration method the most according to claim 1, it is characterised in that: described in step 1
Precisely environmental simulation storehouse is a closing storehouse, is provided with temperature and humidity control system, VMC (Ventilation Mechanical Control System), power-measuring system, exhaust emissions system in it
System and sunlight analog systems, wherein temperature and humidity control system temperature and humidity in controlling closing storehouse, VMC (Ventilation Mechanical Control System) is used for
Controlling to close the air discharge in storehouse, head-on the headstock opposite of vehicle to be measured is located at by blower fan, when being used for providing vehicle actual motion
Face velocity, power-measuring system is located at vehicle bottom to be measured, for loading running resistance and measure speed, tail to the vehicle run
Gas exhaust system is for collecting the tail gas in vehicle operation, and sunlight analog systems is located at vehicle up direction to be measured, is used for controlling
Light radiation intensity.
Vehicle air conditioner refrigerant filling volume calibration method the most according to claim 1, it is characterised in that: step 2 concrete
Process is: is put into by vehicle in accurate environmental simulation storehouse, is fixed on dynamometer machine by vehicle chassis by fixing device, is arranged by tail gas
Put cylinder to be connected with gas emission device, tackled vehicle air conditioner to be measured before on-test and check, it is ensured that air conditioning system energy
Enough normal work, and ensure that temperature cycles air door can normally work with internal-external cycle throttle, it is ensured that air conditioning system inner compressor oil
Being in design point, before filling cold-producing medium, air conditioning system is carried out evacuation pressurize, the dwell time is not less than 20 minutes, it is ensured that
Air conditioning system is without revealing, and test preparation makes vehicle run under default operating mode after completing, to engine-cooling system joint temperature
Device is opened, it is ensured that the condenser air quantity under all refrigerant charges is consistent, and vehicle initiates refrigerant charge and designs for system
Refrigerant charge deducts 200g, if system design refrigerant charge deducts more than 300g after 200g, is then initial with 300g
Cold-producing medium adding amount, every 10min charging refrigerant in process of the test, treats air conditioning system to operate steadily afterwards and passes through data acquisition
Instrument blows face in gathering condensator outlet pressure corresponding to each refrigerant charge, condensator outlet temperature, car respectively, and each goes out
Draught temperature and outer circulation inlet temperature, the amount being every time filled with cold-producing medium when degree of supercooling is less than 0 DEG C is 50g, and degree of supercooling is more than 0 DEG C
The amount being later every time filled with cold-producing medium is 25g.
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| CN201610478228.0A CN106198043A (en) | 2016-06-28 | 2016-06-28 | A kind of vehicle air conditioner refrigerant filling volume calibration method |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107726534A (en) * | 2017-10-24 | 2018-02-23 | 广东美的暖通设备有限公司 | Air conditioner heat pump system and its coolant injection control method, device |
| CN110857811A (en) * | 2018-08-24 | 2020-03-03 | 奥克斯空调股份有限公司 | Air conditioner and air conditioner refrigerant leakage detection method |
| CN111189267A (en) * | 2020-01-07 | 2020-05-22 | 重庆大学 | New energy automobile refrigerant charge detection system |
| CN111207533A (en) * | 2020-01-07 | 2020-05-29 | 重庆大学 | Method for detecting charge amount of refrigerant of vehicle-mounted air conditioner of new energy automobile in real time |
| CN112014133A (en) * | 2020-08-19 | 2020-12-01 | 中国第一汽车股份有限公司 | Method for confirming low-temperature optimal charging amount of refrigerant of heat pump air conditioner of pure electric vehicle |
| CN112304635A (en) * | 2020-10-23 | 2021-02-02 | 潍柴动力股份有限公司 | Electric drive system fault detection device, detection system and detection method |
| CN112683564A (en) * | 2020-12-25 | 2021-04-20 | 江苏中科君达物联网股份有限公司 | Method for calculating rated refrigerating capacity deviation of air conditioner at different wind speeds |
| CN113029626A (en) * | 2021-03-29 | 2021-06-25 | 重庆长安汽车股份有限公司 | Test method for pure electric vehicle air conditioner refrigeration performance rack |
| CN113154730A (en) * | 2021-04-30 | 2021-07-23 | 珠海格力电器股份有限公司 | Refrigerant charge amount calculation method and device and refrigeration equipment |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107726534A (en) * | 2017-10-24 | 2018-02-23 | 广东美的暖通设备有限公司 | Air conditioner heat pump system and its coolant injection control method, device |
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| CN110857811A (en) * | 2018-08-24 | 2020-03-03 | 奥克斯空调股份有限公司 | Air conditioner and air conditioner refrigerant leakage detection method |
| CN110857811B (en) * | 2018-08-24 | 2021-05-18 | 奥克斯空调股份有限公司 | Air conditioner and air conditioner refrigerant leakage detection method |
| CN111189267A (en) * | 2020-01-07 | 2020-05-22 | 重庆大学 | New energy automobile refrigerant charge detection system |
| CN111207533A (en) * | 2020-01-07 | 2020-05-29 | 重庆大学 | Method for detecting charge amount of refrigerant of vehicle-mounted air conditioner of new energy automobile in real time |
| CN112014133A (en) * | 2020-08-19 | 2020-12-01 | 中国第一汽车股份有限公司 | Method for confirming low-temperature optimal charging amount of refrigerant of heat pump air conditioner of pure electric vehicle |
| CN112304635A (en) * | 2020-10-23 | 2021-02-02 | 潍柴动力股份有限公司 | Electric drive system fault detection device, detection system and detection method |
| CN112683564A (en) * | 2020-12-25 | 2021-04-20 | 江苏中科君达物联网股份有限公司 | Method for calculating rated refrigerating capacity deviation of air conditioner at different wind speeds |
| CN112683564B (en) * | 2020-12-25 | 2022-01-28 | 江苏中科君达物联网股份有限公司 | Method for calculating rated refrigerating capacity deviation of air conditioner at different wind speeds |
| CN113029626A (en) * | 2021-03-29 | 2021-06-25 | 重庆长安汽车股份有限公司 | Test method for pure electric vehicle air conditioner refrigeration performance rack |
| CN113154730A (en) * | 2021-04-30 | 2021-07-23 | 珠海格力电器股份有限公司 | Refrigerant charge amount calculation method and device and refrigeration equipment |
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