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introductive
This standard in QC/T 449-1999 "insulation cars, refrigerating automobile performance test method of revision, retained QC/T 449-1999 for our practice proves the situation. The basic properties of the test vehicle for using the latest version, the national standards, and the reliability test failure mode for inspection according to special cars for performance test, the main body of leakage ratio and heat transfer coefficient and static tempering etc. Several tests varies, in order to make it more reasonable, accord with international standard.
This standard from the date of implementation, and replace the QC/T 449-1999.
The appendix A of this standard and the appendix B are standard annex.
This standard by the national institute of machinery.
This standard by the national standardization technical committee of automobile etc.
This standard drafting unit: zhenjiang feichi automobile group Co., LTD, jinan's special examination motor Co., LTD.
The main criteria ZouChunXi: GaoYouLe, ChenRenKui, ZhangChangJing, HanJiYin,.
Automobile industry standard of the People's Republic of China QC/T 449—2000
BaoWenChe, refrigerator performance test method replaceQC/T 449—1999
1 scope
This standard stimulates the BaoWenChe, refrigerator test method.
This standard applies to finalize the design using modified car chassis BaoWenChe category and refrigerator (in this standard refers to the mechanical refrigeration type refrigerator) and insulation semi-trailer, refrigeration semi-trailer, other similar models can refer to.
2 reference standard
The following standards contain provision which, through reference in this text, constitute provisions of this standard. At time of publication, the editions indicated for effective. All standards are subject to revision, the use of the standard of the parties should use the following standards into the possibility of the latest version.
GB l496-1979 motor vehicle noise measurement methods
GB l4761-1999 auto emissions limits and test methods
GB 3847-1999 compression ignition engine and installed with compression ignition engine vehicle exhaust pollutants and the test method is limit
GB/T 12534-1990 automotive road test method rule
GB/T 12536-1990 cars slide test method
GB/T 12538-1990 automobile gravity center measuring method
GB/T 12539-1990 car climb steep test method
GB/T 12543-1990 car accelerating performance test method
GB/T 12545-1990 automobile fuel consumption of the test method
GB/T 12540-1990 automobile minimum turning diameter determination method
GB/T 12544-1990 car top speed of test method
GB/T 12547-1990 the minimum speed stability test method
GB/T 12673-1990 automobile main dimensions measurement methods
GB/T 12674-1990 automotive quality (weight) parameters determination method
GB l2676-1999 automobile braking system structure, performance and test methods
QC/T 252-1998 special-purpose automobile finalize the design test procedures
QC/T 450-2000 BaoWenChe, refrigerator technical conditions
QC/T 589-1999 van auto product quality inspection evaluation method
3 test condition
BaoWenChe, refrigerator test conditions and test preparation of GB/T 12534 regulation.
4 the test method
BaoWenChe 4.1 and refrigerator size parameters measurement of GB/T 12673 requirements.
BaoWenChe 4.2 gravity height, refrigerator determination of GB/T 12538 requirements.
BaoWenChe 4.3, refrigerator quality parameters determination of GB/T 12674 requirements.
The highest speed tests 4.4 GB/T 12544 requirements.
4.5 acceleration performance test of GB/T 12543 requirements.
The minimum speed stability test 4.6 according to GB/T 12547 requirements.
Climb steep 4.7 GB/T 12539 test requirements.
480 fuel consumption of GB/T test 12545 requirements.
490 taxi tests of GB/T 12536 requirements.
Braking test BaoWenChe kind, refrigerator GB 12676 requirements.
BaoWenChe 4.11, refrigerator minimum turning diameter test of GB/T 12540 requirements.
4.12 noise measurement of GB 1496.
The emission measurement 4.13 gasoline vehicles on the provisions of 14761 GB, Engine emission measurement of GB 3847 requirements.
Driving test reliability dope-containing.
4.14.1 experiment purposes
Inspection car and carriage and chassis, refrigerating and connection of reliability.
4.14.2 test method
Test trip mileage and QC/T 252 mileage distribution by testing, QC/T 589 - according to the provisions in the 1999 5.5 BaoWenChe appear refrigerator, fault classification and statistics.
The rain 415 experiment
4.15.1 experiment purposes
Inspection cars and electric control boxes of refrigerating sealing performance.
4.15.2 test condition
The rain test set in the rain indoors. Train doors, refrigeration unit electric control the normal petrol, diesel engine or close the refrigeration unit must be driving the exhaust pipes blocked.
4.15.3 test method
When the rain inspection, rainfall intensity for 5 ~ 7mm/min, direction and plumb-lines becomes 45 °, and the electric control box for carriage for 30min after rain test, test and control box dry external water carriage, opened the door and inspection shall be no water, and leakage phenomenon.
4.16 tightness test
4.16.1 experiment purposes
The tightness performance assessment, LouQiLiang carriage of measuring should be arranged in the rain after test.
4.16.2 test condition
Test is divided into two level, see table 1.
Table 1
|
|
A magnitude |
Level 2 |
|
Test site |
Can control temperature climate chamber.three |
Shading and no other heat affect indoor or equivalent conditions of the natural environment |
|
carriage |
Racing, internal cleansing, floor osculum, evaporator osculum beforehand, door and ventilation is blocked in the normal state |
|
Cars and differential pressure |
（100±10）Pa |
|
Temperature elements arrangement |
From the above the top carriage and car floor above all a 0.1 m in temperature |
|
Carriages outside temperature |
In 298K ~ 288 within each temperature elements within ± K in each element, 1.5 3K not greater than between temperature |
More than 273K, each temperature elements within ± 3K stability in |
4.16.13 test instrument
A) thermometers, temperature elements,
B) differential pressure,
C) flowmeter,
D) gauge,
Test instrument accuracy (see appendix A standard appendix).
4.16.4 test method
Use of carriage by air pressurization method, and internal pressure differential pressure compartment is reached, and ensure supply requirements. Test conditions and stability, the air flow measurement, the measurement once every 5min, number of consecutive measurements shall be not less than 6 times.
4.16.15 data processing
Test results to fill the appendix B (standard appendix) watch B1, the flow condition should be converted to standard 273K (1.013), 105Pa x to flow, volumetric flowmeter using formula (1) amended. For other flowmeter is also should adopt corresponding modification methods, measuring results will be converted to standard conditions of flow.
V=（P0T/PT0）V0…………………………………（1）
Type: V - the standards of the state LouQiLiang, m3 / h,
The measured flowmeter V0 - LouQiLiang, m3 / h,
T - standard condition absolute temperature, 273K,
T0 - flow measurement of air temperature, K absolute,
P - standard atmospheric pressure 1.013 * 105 Pa,
P0 - the air flow measurement, Pa absolute pressure. Insulation performance test. 4.17
4.17.1 experiment purposes
Examination of the carriage insulating performance and should be arranged in the air after the experiment.
4.17.2 test condition
Test condition is divided into two parts, the specific requirements in table 2.
Table 2
|
|
A magnitude |
Level 2 |
|
Test site |
Can control temperature climate chamber.three |
Shading and no other heat affect indoor or equivalent conditions of the natural environment |
|
Airflow velocity |
From cars outside surface is greater than 0.1 m 2m/s |
|
carriage |
Clean, dry, internal no-load, floor osculum and evaporator osculum under normal use and ventilation, door closed according to normal mode |
|
Temperature elements arrangement |
From internal and external surface in the car compartment, in 0.1 m inside and outside vertex eight carriage of the four longitudinal surface, and each one center for 12 points |
In the distance, and car compartment in 0.1 m inside the center for 6 months, and each has six points |
|
Temperature |
Average temperature |
293～298K |
Don't 308K above |
|
Cars and temperature |
No less than 20K |
|
Carriages outside temperature |
Temperature maximum temperature difference than average temperature 2K, not less than 1.5 K |
Temperature, temperature elements not more than average temperature stability of 3K in ± 1.5 |
|
Car temperature |
Maximum temperature, temperature is not more than an average temperature of 3K not greater than 1.5 K |
Temperature, temperature elements not more than average temperature stability of 3K within ± K in 1.5 |
|
Theelectrohydraulic power fluctuations |
Maximum and minimum heating power heating power of less than 3% of the minimum heating power |
4.17.3 test instrument
A); watt.
B) thermometers, temperature elements,
C) the wind meter.
Test instrument accuracy see appendix A.
4.17.4 test method
Using internal heating, trials of all heater in low temperature should as far as possible, in order to reduce the influence of thermal radiation. To ensure the inside temperature with the requirements and table 2 can use one or several fan, air circulation, with enough for each temperature elements are due to thermal radiation protection measures. After the test conditions to start measuring, stable 1h 15min measuring time, every time for testing, not less than 4h throughout the test in the carriage, and the total power and heating temperature may rise or fall drab.
4.17.5 data processing
Test results to fill the appendix B table B2, total heat leakage rate of formula (2)
U0 =Q/（θi/θe） …………………………………（2）
Type: U0 -- average temperature for theta total heat leakage rate, W/K,
Q - car heating stability of power consumption, W,
Theta I -- inside the average temperature, namely for the temperature elements of the arithmetic mean temperature of instructions, K,
Theta e - car outside the average temperature, namely for the temperature elements of the arithmetic mean temperature of instructions, K.
4.18 static performance testing thermostat
4.18.1 experiment purposes
When given in the determination of refrigerator static outside temperature theta e conditions remain rated inside temperature function of I theta.
4.18.2 test condition
Test points, see table 3, including 3 test only used in table 3 test, including 3 test only used in the test.
Table 3
|
|
A magnitude |
Level 2 |
Three level |
|
Experimental sites |
Can control temperature climate chamber.three |
No direct sunlight and other heat affect indoor coequal condition of natural environment |
Shading of rain natural environment |
|
Airflow velocity |
From cars outside surface is greater than 0.1 m 2m/s |
|
carriage |
New car, door, according to normal mode and ventilation is closed, floor osculum and evaporator osculum under normal use |
|
Temperature elements arrangement |
In table 2 stipulated in the layout, the other is in the air import evaporator cloth 4 |
In table 2 stipulated in the layout, the other is in the air import evaporator cloth 2 |
Inside the car |
|
Temperature |
The temperature stability in the compartment (0.5) : 303 ± K, temperature difference between components 2K not greater than |
The car in 308K ~ 298 temperature range, and stable in any selected within ± 1.5 K, temperature difference between components, carriage and not more than 3K temperature is not more than 3K |
The car compartment, not less than 273K temperature and temperature is not more than 5K |
4.18.3 test instrument
A)
B) thermometers, temperature elements,
C) the wind meter.
Test instrument accuracy see appendix A.
4.18.4 type test test method
4.18.4.1 LouQiLiang compartment in the determination and leakage rate of hot after the experiment, the experimental conditions stipulated according to table 3.
In this experiment 4.18.4.2 attached heating load without the circumstances, refrigeration test, and then join attached heating load, refrigeration unit operation, attached heating consented to by formula (3) :
Qa≥0.25U(θe) …………………………………-θi（3）
Type: heating load, Qa, attached W,
U - leakage rate of heat, W/K, its value see QC/T 450-2000 function of 3.
4.18.4.3 chiller equipment operation shall be set the thermostat (within temperature by QC/T temperature in the 4.3.17 450-2000 regulations), and then run fluctuation 2h into additional heater (including fan) generated attached heating load, make test conditions Qa balance and stability, and then continue to run over 2h. In the above two operation period, the gap in less than 15min measured compartment inside and outside the point temperature and heating and power consumption by fan.
4.18.5 data processing
Test results to fill the appendix B table, and B3 figure 1 style rendering cooling curve.
4.18.6 ex-factory inspection methods
In the third grade 4.18.2 experiment condition, the temperature controller, adjustable refrigerating thermostat to lower half of the scope of internal motive power for respectively for refrigeration and power in set temperature, under the two tempering waveform test.
4.19 driving performance testing thermostat.
4.16.1 experiment purposes
Driving condition assessment in the refrigerator thermoregulat performance.
4.19.2 test condition
See table 4 test condition.
Table 4
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|
The test |
Type test |
|
road |
General highway |
4 grade highway is no less than 40% |
|
Weather |
whereupon |
Can have rain |
|
Environmental temperature |
higher 278K |
288～308K |
|
Loading condition |
no-load |
|
Average speed |
30～40km/h |
4.19.3 test method
Test method, see table 5.
IIEF-5
|
|
The test |
Produce consistency inspection |
Finalize the design experiment |
|
Temperature controller, adjustable set temperature |
The scope of the lower thermostat one half |
The scope of tempering |
|
Cool experiments |
1 |
2 |
3 |
|
Tempering experiments |
1 |
2 |
5 |
4.19.4 data processing
Fill the appendix B4 test data.
Appendix A
The appendix (standard),
The accuracy of measuring instruments
The accuracy of measuring instrument selection should guarantee the measurement error does not exceed specified below.
|
Measuring parameters |
Allows the maximum error of measurement |
|
Test level |
|
A magnitude |
Level 2 |
Three level |
|
surface |
0.5% |
1% |
1% |
|
Air pressure |
3% |
3% |
5% |
|
The air flow |
3% |
3% |
5% |
|
The air temperature，K |
0.25 |
0.5 |
1.0 |
|
Theelectrohydraulic power |
0.5% |
1% |
1% |
|
Airflow velocity |
3% |
3% |
5% |
The appendix B
The appendix (standard),
BaoWenChe, refrigerator specificity test record
The table below mainly USES in the secondary test conditions, if use level or triple test condition, can according to form another.
Table LouQiLiang test record carriage B1
ShiYanChe model Production date Environmental temperature
Inside the box Heat transfer area Local atmospheric pressure
Test of time Test site Testing personnel
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number |
Time |
The air temperature，K |
The flow measurement in pressure Pa |
Cars and differential pressure Pa |
LouQiLiang which flowmeter
m3/h |
Leakage quantity standard condition
m3/h |
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car |
The carriage |
The flow measurement |
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1 |
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2 |
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3 |
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4 |
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5 |
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6 |
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7 |
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8 |
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average |
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List box body heat leakage rate of B2 test record
ShiYanChe name and model Production date Environmental temperature
Chiller model Test of time
Test site Testing personnel
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number |
Time |
Internal temperature，K |
External temperature，K |
Internal and external temperature
(θI-θe)
k |
Average surface temperature（θI-θe）/2 k |
Heating total powerW |
Total heat leakage
W/K |
|
1 |
2 |
3 |
4 |
5 |
6 |
average |
1 |
2 |
3 |
4 |
5 |
6 |
average |
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1 |
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4 |
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5 |
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6 |
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7 |
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8 |
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9 |
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10 |
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11 |
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12 |
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13 |
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14 |
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15 |
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16 |
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average |
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Table B3 static tempering performance test record
ShiYanChe name and model Factory Numbers
Chiller model large Environmental temperature
Test site Test date Testing personnel
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Time |
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Car temperature
K |
1 |
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2 |
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3 |
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4 |
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5 |
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6 |
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7 |
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8 |
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9 |
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10 |
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average |
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Carriages outside temperature
K |
1 |
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2 |
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3 |
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4 |
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5 |
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6 |
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average |
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Heating power consumption W |
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Note: the car for evaporator temperatures 7, 8 out of FengKouChu temperature elements, 9, 10 temperature instructions for the evaporator into FengKouChu temperature elements instructions temperature.
Table B4 driving test record thermostat
ShiYanChe name and model Factory Numbers &a, mp;nbs, p;
Chiller model large , Environmental temperature
Test site , Test date &nbs, p; Testing personnel
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The odometers in reading，km |
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Time |
drive |
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parking |
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boot |
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stop |
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Car temperature，K |
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Frost melt |
start |
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end |
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fault |
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