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GB/T 40711.3-2021 English PDF (GBT40711.3-2021)

GB/T 40711.3-2021 English PDF (GBT40711.3-2021)

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GB/T 40711.3-2021: Off-cycle technology/device energy saving effects evaluation methods for passenger cars -- Part 3: Automotive air conditioner

This document specifies the energy saving effects evaluation methods of automotive air conditioners for passenger cars. This document applies to M1 vehicles with an automotive air conditioner, of which the maximum design gross mass does not exceed 3 500 kg. This document applies to vehicles capable of burning gasoline or diesel, not to externally rechargeable hybrid electric vehicles.
GB/T 40711.3-2021
GB
NATIONAL STANDARD OF THE
PEOPLE REPUBLIC OF CHINA
ICS 43.020
CCS T 40
Off-cycle technology/device energy saving effects
evaluation methods for passenger cars - Part 3:
Automotive air conditioner
ISSUED ON: OCTOBER 11, 2021
IMPLEMENTED ON: MAY 01, 2022
Issued by: State Administration for Market Regulation;
Standardization Administration of the PEOPLE Republic of
China.
Table of Contents
Foreword ... 3
Introduction ... 5
1 Scope ... 7
2 Normative references ... 7
3 Terms and definitions ... 8
4 General requirements ... 8
5 Test conditions ... 8
6 Test procedures ... 10
7 Test results ... 11
Appendix A (Normative) Automobile air conditioner test report ... 13
References ... 18
Off-cycle technology/device energy saving effects
evaluation methods for passenger cars - Part 3:
Automotive air conditioner
1 Scope
This document specifies the energy saving effects evaluation methods of automotive air conditioners for passenger cars.
This document applies to M1 vehicles with an automotive air conditioner, of which the maximum design gross mass does not exceed 3 500 kg.
This document applies to vehicles capable of burning gasoline or diesel, not to externally rechargeable hybrid electric vehicles.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the version corresponding to that date is applicable to this document; for undated references, the latest version (including all amendments) is applicable to this document.
GB 18352.6-2016, Limits and measurement methods for emissions from
light-duty vehicles (CHINA 6)
GB/T 19233-2020, Measurement methods of fuel consumption for light-duty vehicles
GB 19578, Fuel consumption limits for passenger cars
GB/T 19753-2021, Test methods for energy consumption of light-duty hybrid electric vehicles
GB 27999, Fuel consumption evaluation methods and targets for passenger cars
QC/T 720, Auto air condition vocabulary
3 Terms and definitions
Terms and definitions defined in GB 27999 and QC/T 720 apply to this
document.
4 General requirements
4.1 The vehicle manufacturer or its authorized agent shall submit a vehicle representing the tested model to the inspection agency, and at the same time provide information on the functions and usage methods of the air conditioning system used by the vehicle. For models that are equipped with automatic and manual air conditioners, vehicles of automatic air conditioner shall be selected for testing; for other different configurations, representative vehicles shall be selected according to the principle of maximum air-conditioning energy
consumption, and at least the following factors shall be considered:
-- compressor type;
-- glass transmittance;
-- car body color.
4.2 The tested vehicle shall comply with the requirements of fuel consumption limits specified in GB 19578 and requirements on pollutant emission in GB 18352.6-2016 (or other applicable versions).
4.3 Carry out the test in accordance with the requirements of Chapter 5 and Chapter 6; record the parameters and test data of the test vehicle according to the provisions of Appendix A. Calculate the fuel consumption and target value of the air conditioner according to the requirements of 7.1 and 7.2; express the calculation results in liters per 100 kilometers (L/100 km); round (round up) to three decimal places. Calculate the energy saving effects according to the requirements of 7.3; express the calculation results in liters per 100 kilometers (L/100 km); round (round up) to two decimal places.
5 Test conditions
5.1 Laboratory and test equipment
The technical characteristics of the laboratory and test equipment shall comply with the provisions of B.2.1 in GB/T 19233-2020; for non off-vehicle chargeable hybrid electric vehicles (NOVC-HEV), the technical characteristics of the test equipment shall also comply with the provisions of 4.2.2 in GB/T 19753-2021. 5.2 Test fuel
5.5.4 For vehicles with middle-row and back-row air outlet, close the middle- row and back-row air outlet and the air outlet control switch (if any). Set the opening of the front air outlet to the maximum; set the direction of the air outlet according to the requirements of the vehicle manufacturer.
6 Test procedures
6.1 Test preparation
6.1.1 Set the ambient temperature and humidity according to the requirements of 5.3.1 and 5.3.2.
6.1.2 Place the vehicle and connect the exhaust sampling system and other test equipment; confirm that there is no leakage in the fuel line and that the exhaust is sufficient.
6.1.3 Set the chassis dynamometer according to the requirements of 6.2 in GB/T 19233-2020.
6.2 Test cycle
Perform the test in accordance with the China light-duty vehicle test cycle- passenger (CLTC-P) that is specified in 4.3 of GB/T 19233-2020.
6.3 Determination of vehicle fuel consumption under the condition of
turning on the air conditioner (FCON)
6.3.1 Open all the windows; put the air circulation switch of the automotive air conditioner to the outer circulation position; put the air volume adjustment switch to the middle position (round up to the high-end position). During this process, the compressor shall always be turned off.
6.3.2 The vehicle is driven at a constant speed of (90??2) km/h for 20 min; for NOVC-HEV, pretreatment shall be carried out according to C.3.2 in GB/T
19753-2021.
6.3.3 Close the vehicle power system and all windows. After setting the solar radiation intensity according to 5.3.3, let the vehicle stand for 30 min. 6.3.4 After turning on and setting the automotive air conditioner according to the requirements of 5.5, immediately carry out the test according to the requirements of 6.4 ~ 6.5 in GB/T 19233-2020, and calculate the test results according to 7.1 ~ 7.4 in GB/T 19233-2020; for NOVC-HEV, after turning on and setting the automotive air conditioner according to the requirements of 5.5, immediately carry out the test according to the requirements of 6.1 and 6.4 of GB/T 19753-2021, and calculate the test results according to 7.2 of GB/T 19753-2021.
6.3.5 During the test, record the temperature change of the temperature measurement point required in 5.4.2 continuously in real time at an acquisition frequency of not less than 1 Hz. When the test is carried out for 15 minutes, the average temperature of all temperature measurement points shall not be
greater than 23 ??C, otherwise, terminate the test, and carry out the test again in the order of 6.1 ~ 6.5 after resetting according to 5.5. During the time from the test is carried out for 15 minutes to the end of the test, the cumulative duration of the average temperature of all temperature measurement points above 23 ??C shall not exceed 10 s, otherwise, the test shall be invalid and carried out again in the order of 6.1 ~ 6.5 after resetting according to 5.5. 6.4 Determination of vehicle fuel consumption under the condition of
turning off the air conditioner (FCOFF)
6.4.1 Turn off solar radiation. Perform the operation according to 6.3.1, 6.3.2. 6.4.2 After turning off the automotive air conditioner and all windows, immediately carry out the test according to the requirements of 6.4 ~ 6.5 in GB/T 19233-2020, and calculate the test results according to 7.1 ~ 7.4 in GB/T 19233- 2020; for NOVC-HEV, after turning off the automotive air conditioner and all windows, immediately carry out the test in accordance with the requirements of 6.1 and 6.4 in GB/T 19753-2021, and calculate the test results in accordance with 7.2 in GB/T 19753-2021.
6.5 Repeatability inspection
In accordance with the requirements of B.3.5 in GB/T 19233-2020, perform the repeatability inspection of the test results, with the air conditioner turned on and off respectively.
7 Test results
7.1 Fuel consumption of the automobile air conditioner
Calculate the fuel consumption of the air conditioner of this model according to Formula (1):
Where:
FCAC ?€? the fuel consumption of the automobile air conditioner, in liters per 100 kilometers (L/100 km);
FCON ?€? the fuel consumption under the condition that the air conditioner of the vehicle is turned on, in liters per 100 kilometers (L/100 km);

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