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GB/T 12782-2022: Requirement and test method of heating performance for motor vehicle Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure Status: Valid GB/T 12782: Historical versions
Similar standardsGB/T 12782-2022: Requirement and test method of heating performance for motor vehicle---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT12782-2022GB 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 ContentsForeword... 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... 861 ScopeThis 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 ReferencesThe 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 Vehicles3 Terms and DefinitionsWhat 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. 3.3 transient condition Transient condition refers to the driving condition, in which, the vehicle speed continuously changes within a certain period of time.4 Performance RequirementsIn accordance with the test conditions provided in 6.2.2,5 Test Conditions5.1 Test Instrument The measurement parameters, unit and accuracy requirements of the test instrument are shown in Table 1. 5.2 Test Environment 5.2.1 General requirements The test can be carried out under the conditions of road environment or laboratory environment. The conditions of road environment shall comply with the requirements of 5.2.2; the conditions of laboratory environment shall comply with the requirements of 5.2.3. 5.3 Test Vehicle 5.4 Other Test Conditions 5.4.1 Road test The road test shall comply with the requirements of GB/T 12534. 5.4.2 Laboratory test6 Test Methods6.1 Arrangement of Position of Measuring Temperature 6.1.1 The requirements for the position of measuring temperature in the vehicle are shown in Table 2.The seat should be placed in the middle position, and the seat back should be adjusted to the vehicle design state. Other positions of measuring temperature can be set in accordance with the test demands. 6.1.2 When conducting the test under outdoor environmental conditions, the average temperature of the two positions of measuring temperature 20 mm away from the center of the left and right rearview mirrors shall be taken as the temperature of the outdoor position of measuring temperature. The position of measuring temperature shall avoid direct sunlight. 6.2 Test Conditions 6.2.1 Selection of test conditions In accordance with the steady state condition provided in 6.2.2, conduct the heating performance test. The heating performance test can be carried out through the mode of road test or laboratory 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 6.3.2 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. 6.4 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 Report7.1 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.Appendix A(informative) Transient Condition and Data of Heating Performance of Chinese Motor Vehicles A.1 Transient Condition A.1.1 Heating condition of Category-M1 and N1 vehicles, as well as Category-M2 vehicles whose maximum design total mass does not exceed 3,500 kg 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 transient test of heating performance shall be carried out in accordance with the conditions shown in Figure A.1, and the condition data is shown in Table A.1. ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al. 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