GB/T 12782-2022_English: PDF (GB/T12782-2022)
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Requirement and test method of heating performance for motor vehicle
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GB/T 12782-2022
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| GB/T 12782-2007 | English | 70 |
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Motor vehicle -- Heating performance requirement -- Test method
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| GB/T 12782-1991 | English | 199 |
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Motor vehicle--Heating performance--Test method
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| Standard ID | GB/T 12782-2022 (GB/T12782-2022) | | Description (Translated English) | (Automobile heating performance requirements and test methods) | | Sector / Industry | National Standard (Recommended) | | Classification of International Standard | 43.020 | | Word Count Estimation | 85,889 | | Date of Issue | 2022-12-30 | | Date of Implementation | 2023-07-01 | | Older Standard (superseded by this standard) | GB/T 12782-2007 | | Drafting Organization | China Automotive Technology and Research Center Co., Ltd., China Automotive Research Institute Automobile Inspection Center (Tianjin) Co., Ltd., Zhejiang Geely Holding Group Co., Ltd., Anhui Jianghuai Automobile Group Co., Ltd., Xiamen King Long Station Co., Ltd., Beiqi Foton Motor Co., Ltd., Chongqing Changan Automobile Co., Ltd., Hainan Tropical Automobile Testing Co., Ltd., China FAW Group Co., Ltd., Beijing New Energy Automobile Co., Ltd., Nanjing Iveco Automobile Co., Ltd., Guangzhou Automobile Group Co., Ltd. Automotive Engineering Research Institute, Xiangyang Daan Automobile Testing Center Co., Ltd., SAIC MAXUS Automobile Co., Ltd., FAW Jiefang Automobile Co., Ltd., Dongfeng Motor Group Co., Ltd., China Automobile Research Institute Automobile Inspection Center (Hulunbuir) Co., Ltd., China Automobile Research Institute Automobile Inspection Center (Ningbo) has | | Administrative Organization | National Automotive Standardization Technical Committee (SAC/TC 114) | | Proposing organization | Ministry of Industry and Information Technology of the People's Republic of China | | Issuing agency(ies) | State Administration for Market Regulation, National Standardization Management Committee | | Standard ID | GB/T 12782-2007 (GB/T12782-2007) | | Description (Translated English) | Motor vehicle. Heating performance requirement. Test method | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | T04 | | Classification of International Standard | 43.020 | | Word Count Estimation | 6,659 | | Date of Issue | 2007-04-30 | | Date of Implementation | 2007-12-01 | | Older Standard (superseded by this standard) | GB/T 12782-1991 | | Drafting Organization | National Automobile Quality Supervision and Inspection Center (Xiangfan) | | Administrative Organization | National Automotive Standardization Technical Committee | | Regulation (derived from) | National Standard Announcement 2007 No.4 (Total No.104) | | Proposing organization | National Development and Reform Commission | | Issuing agency(ies) | Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China; Standardization Administration of China | | Summary | This standard specifies the car heating performance requirements and test methods. This standard applies to all types of vehicles. | | Standard ID | GB/T 12782-1991 (GB/T12782-1991) | | Description (Translated English) | Motor vehicle--Heating performance--Test method | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | T40 | | Classification of International Standard | 43.02 | | Word Count Estimation | 5,523 | | Date of Issue | 1991/3/22 | | Date of Implementation | 1991/12/1 | | Older Standard (superseded by this standard) | GB 1334-1977 | | Regulation (derived from) | National-Standard Bulletin 2007 No. 4 (No. 104 overall) | | Proposing organization | China Automotive Industry Corporation | | Issuing agency(ies) | State Bureau of Technical Supervision |
GB/T 12782-2022
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 43.020
CCS T 04
Replacing GB/T 12782-2007
Requirement and Test Method of Heating Performance for
Motor Vehicle
ISSUED ON: DECEMBER 30, 2022
IMPLEMENTED ON: JULY 1, 2023
Issued by: State Administration for Market Regulation;
Standardization Administration of the People’s Republic of China.
Table of Contents
Foreword ... 3
1 Scope ... 5
2 Normative References ... 5
3 Terms and Definitions ... 5
4 Performance Requirements ... 6
5 Test Conditions ... 6
6 Test Methods ... 8
7 Test Data Processing and Test Report ... 11
Appendix A (informative) Transient Condition and Data of Heating Performance of
Chinese Motor Vehicles ... 12
Appendix B (informative) Test Report ... 86
Requirement and Test Method of Heating Performance for
Motor Vehicle
1 Scope
This document specifies the requirement, test method, data processing and test report of heating
performance for motor vehicle.
This document is applicable to Category-M and Category-N motor vehicles.
2 Normative References
The contents of the following documents constitute indispensable clauses of this document
through the normative references in the text. In terms of references with a specified date, only
versions with a specified date are applicable to this document. In terms of references without a
specified date, the latest version (including all the modifications) is applicable to this document.
GB/T 12534 Motor Vehicles - General Rules of Road Test Method
GB/T 15089 Classification of Powder-driven Vehicles and Trailers
GB 18352.6 Limits and Measurement Methods for Emissions from Light-duty Vehicles
GB/T 19596 Terminology of Electric Vehicles
GB/T 27840 Fuel Consumption Test Methods for Heavy-duty Commercial Vehicles
GB/T 38146.1 China Automotive Test Cycle - Part 1: Light-duty Vehicles
GB/T 38146.2 China Automotive Test Cycle - Part 2: Heavy-duty Commercial Vehicles
3 Terms and Definitions
What is defined in GB/T 15089, GB/T 19596, GB/T 38146.1 and GB/T 38146.2, and the
following terms and definitions are applicable to this document.
3.1 position of measuring temperature
Position of measuring temperature refers to the installation position of temperature sensor.
3.2 steady state condition
Steady state condition refers to the driving condition, in which, the vehicle speed remains
constant for a certain period of time.
3.3 transient condition
Transient condition refers to the driving condition, in which, the vehicle speed continuously
changes within a certain period of time.
4 Performance Requirements
In accordance with the test conditions provided in 6.2.2, when conducting heating performance
test at an ambient temperature of (25 3) C for 40 min and 60 min, the heating performance
of the vehicle shall reach the following requirements.
a) For Category-M1 and Category-N vehicles:
1) The temperature of the driver’s and front passenger’s feet shall not be lower than
15 C;
2) The temperature of other passengers’ feet shall not be lower than 12 C.
b) For Category-M2 and Category-M3 vehicles:
1) The temperature of the driver’s and front passenger’s feet shall not be lower than
15 C;
2) In accordance with the number of seat rows of the sample vehicle, the
temperature of the feet of the front row, middle row, behind the door and the last
row of seats near the side wall in other passenger areas shall not be lower than
12 C.
5 Test Conditions
5.1 Test Instrument
The measurement parameters, unit and accuracy requirements of the test instrument are shown
in Table 1.
---For Category-M vehicles (excluding city buses) and Category-N vehicles whose
maximum design total mass is greater than 3,500 kg, the test time is 60 min; successively
carry out the test in accordance with the requirements of low-speed section, high-speed
section and idle-speed section; each section lasts 20 min; the low-speed section is set at
45 km/h and the high-speed section is set at 80 km/h;
---For city buses, the test time is 60 min; successively carry out the test in accordance with
the requirements of low-speed section, high-speed section and idle-speed section; each
section lasts 20 min; the low-speed section is set at 25 km/h and the high-speed section
is set at 55 km/h.
If the maximum speed of the test vehicle is lower than the speed requirements of the above-
mentioned high-speed section, then, in accordance with 90% of the maximum vehicle speed,
carry out the test.
6.2.3 Transient condition
The transient condition for the heating performance test of motor vehicle is shown in Appendix
A.
6.3 Test Procedures
6.3.1 Road test procedures
6.3.1.1 The test vehicle shall be parked under the environmental conditions provided in 5.2 for
at least 10 h. During vehicle immersion, the doors, windows and vent holes may be kept open.
If it is confirmed that the temperature of engine coolant, engine oil, or system components, such
as: power battery and motor, has been stabilized, and the temperature change within 1 h is less
than 1 C, the parking stage can be terminated in advance.
6.3.1.2 Check whether the radiator, radiator water pipes and heater water tank pipes are frozen.
If they are frozen, the test shall be terminated.
6.3.1.3 Check the test instrument and clean the inner and outer surfaces of the windshield.
6.3.1.4 All test personnel enter the vehicle, close the doors, windows and vent holes, and in
accordance with the following requirements, conduct the test:
---For Category-M1 and Category-N1 vehicles, as well as Category-M2 vehicles whose
maximum design total mass does not exceed 3,500 kg, after the test driver starts the
engine (if necessary, some external equipment can be used to start the engine) or after
the pure electric vehicle, hybrid electric vehicle and fuel cell electric vehicle are
powered on and the system is adjusted to the READY state, in accordance with the
requirements of 6.2.2, conduct the test;
---For Category-M vehicles and Category-N vehicles whose maximum design total mass
is greater than 3,500 kg, after reaching the warm-up state specified by the automobile
manufacturer, in accordance with the requirements of 6.2.2, conduct the test.
For vehicles equipped with an independent combustion-type heating device, 10 min before the
start of the test, light the heating device for pre-heating.
6.3.1.5 After the test begins, all heating devices shall be turned on and adjusted to the maximum
heating state; the state of auxiliary heating devices (such as: steering wheel heating and seat
heating, etc.) shall comply with the requirements of the vehicle manufacturer; the circulation
mode shall be set to the outer circulation (no mode switching is in the automatic mode, and the
passenger vehicle may set the circulation mode in accordance with the requirements of the
vehicle manufacturer); the air outlet mode adjustment switch shall be placed at the foot position
(if defogging is required, the defogging mode can be used and switch back to the foot blowing
mode after the defogging is completed). For vehicles with different driving modes, the normal
driving mode should be selected during the test.
6.3.2 Laboratory test procedures
6.3.2.1 For Category-M1 and Category-N1 vehicles, as well as Category-M2 vehicles whose
maximum design total mass does not exceed 3,500 kg, the setting of chassis dynamometer shall
be carried out in accordance with the requirements provided in GB 18352.6; for Category-M
and Category-N vehicles whose maximum design total mass is greater than 3,500 kg, the setting
of chassis dynamometer shall be carried out in accordance with the requirements provided in
GB/T 27840. The head-on fan shall be set to the vehicle speed following mode.
6.3.2.2 The presetting, inspection and preparation of the test vehicle shall be carried out in
accordance with the requirements provided in 6.3.1.1 ~ 6.3.1.3.
6.3.2.3 The steady state condition or transient condition heating performance test shall be
carried out in accordance with the steps provided in 6.3.1.4 ~ 6.3.1.5.
6.4 Test Records
In accordance with the test demands, record each parameter. For parameters that need
continuous measurement, the measurement frequency should not be lower than 0.1 Hz.
7 Test Data Processing and Test Report
7.1 Record and draw the temperature - time change curve of each position of measuring
temperature. The form of the test report is shown in Appendix B. The format of the test data
record sheet is shown in Table B.1.
7.2 Record the gears during the test. The format of the steady state heating performance test
data record sheet is shown in Table B.2.
......
GB/T 12782-2007
GB
NATIONAL STANDARD OF
THE PEOPLE’S REPUBLIC OF CHINA
ICS 43.020
T 04
Replacing GB/T 12782-1991
Motor vehicle - Heating performance requirement -
Test method
ISSUED ON. APRIL 30, 2007
IMPLEMENTED ON. DECEMBER 1, 2007
Issued by. General Administration of Quality Supervision, Inspection
and Quarantine;
Standardization Administration Committee.
3. No action is required - Full-copy of this standard will be automatically &
immediately delivered to your EMAIL address in 0~60 minutes.
Table of Contents
Foreword ... 3
1 Scope ... 4
2 Normative references ... 4
3 Terms and definitions ... 4
4 Performance requirement ... 4
5 Test conditions ... 5
6 Test method ... 5
7 Test result ... 7
Annex A (Informative) Motor vehicle heating performance test record ... 8
Foreword
This Standard replaces GB/T 12782-1991 Motor vehicle - Heating
performance - Test method. The main modification differences are as follows.
- modified the name of the standard to “Motor vehicle - Heating
performance requirement - Test method”;
- considering the operability of the test, this Standard added to use the
ambient temperature of (-15 ± 2)°C when it measures the heating
performance of motor vehicle; the time was modified from 40 min to 40
min and 35 min when it reaches to performance requirement;
- deleted the term of “measure the location of the temperature” while
directly used “measure the position of the temperature”; added the
measurement method of “measure the position of the temperature”;
- specified that the test sample vehicle is kerb mass state, empty-loaded;
the number of passenger is 2~3;
- in order to ensure the clear windshield sight and heating effect, warm air
outlet position shall be adjusted according to the actual situation;
- the previous edition requires that the test be conducted once and for all,
and the test result takes the average value; this revision deleted this
sub-clause.
Annex A of this Standard is informative.
This Standard was proposed by National Development and Reform
Commission.
This Standard shall be under the jurisdiction of National Technical Committee
on Automobiles of Standardization Administration of China.
The drafting organization of this Standard. National Automobile Quality
Supervision and Inspection Center (Xiangfan).
Main drafters of this Standard. Xiong Gongxiang, Zuo Tao.
Versions of standard substituted by this Standard are.
- GB 1334-1977;
- GB/T 12782-1991.
Motor vehicle - Heating performance requirement -
Test method
1 Scope
This Standard specifies the heating performance requirement and test
method of motor vehicle.
This Standard applies to all kinds of motor vehicles.
2 Normative references
The following standards contain the provisions which, through reference in
this Standard, constitute the provisions of this Standard. For dated references,
subsequent amendments (excluding corrections) or revisions do not apply to
this Standard. However, the parties who enter into agreement based on this
Standard are encouraged to investigate whether the latest versions of these
documents are applicable. For undated reference documents, the latest
versions apply to this Standard.
GB/T 12534, Motor vehicles - General rules of road test method
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
Measure the position of the temperature
the installation site of temperature sensor
4 Performance requirement
When the test is carried out for 40 min at an ambient temperature of (-25 ±
3)°C or it is carried out for 35 min at an ambient temperature of (-15 ± 2)°C,
the heating performance of motor vehicle shall meet the following
requirements.
a) the feet temperature of driver and second driver shall not be less than
15°C;
b) the feet temperature of passenger shall not be less than 12°C;
c) the head temperature of driver and second driver shall be (2~5)°C
lower than the feet temperature.
5 Test conditions
5.1 Test instrument
5.1.1 Multi-point thermometer, measuring range. (-50 ~ +100)°C; precision
of 0.5°C.
5.1.2 Wind speed and wind direction meter, measuring range.1 ~ 10) m/s;
precision of 0.5 m/s.
5.2 Test environment
The test shall be carried out in rain-free weather, ambient temperature. (-25 ±
3)°C, or (-15 ± 2)°C, wind speed not more than 3 m/s.
5.3 Test vehicle
5.3.1 The test vehicle shall be at the complete vehicle kerb mass with 2 ~ 3
passenger.
5.3.2 Before the test, start the starter till the engine coolant temperature is
stable.
5.3.3 Install a motor vehicle with separate burner heater. Ignite the heating
device 10 mm prior to the test to pre-heat.
5.4 Other test conditions and preparation of test vehicle shall be in
accordance with the provisions of GB/T 12534.
6 Test method
6.1 Determination of measure the position of the temperature
6.1.1 Measure the position of the temperature of driver’s head. 20 mm of
outside of driver’s left ear.
6.1.2 Measure the position of the temperature of driver’s feet. 100 mm from
inner wall of passenger cabinet, 20 mm from floor surface, 500 mm from
measure the position of the temperature of driver’s head at front and back.
6.1.3 Measure the position of the temperature of second driver’s head. 20
mm of outside of driver’s right ear.
......
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