GB/T 26991-2023 PDF EnglishUS$260.00 · In stock · Download in 9 seconds
GB/T 26991-2023: Test methods for power performance of fuel cell electric vehicles 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 26991: Historical versions
Similar standardsGB/T 26991-2023: Test methods for power performance of fuel cell electric vehicles---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/GBT26991-2023GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 43.080.01 CCS T 47 Replacing GB/T 26991-2011 Test methods for power performance of fuel cell electric vehicles Issued on. DECEMBER 28, 2023 Implemented on. JULY 01, 2024 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... 6 4 Test conditions... 6 5 Test vehicle preparation... 11 6 Test items... 11 7 Test method... 13 Appendix A (Normative) Determination method of correction factor on circular road ... 221 ScopeThis document describes the test methods for power performance – such as acceleration performance, maximum speed and gradeability – of fuel cell electric vehicles. This document applies to the power performance tests of M and N fuel cell electric vehicles using compressed hydrogen (hereinafter referred to as “vehicles”).2 Normative referencesThe following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. GB/T 3730.2, Road vehicle - Masses - Vocabulary and codes GB/T 12428, Laden mass calculating method for bus GB/T 12534, Motor vehicles - General rules of road test method GB/T 12539, Motor vehicles steep hill climbing test method GB/T 12545.1-2008, Measurement methods of fuel consumption for automobiles - Part 1.Measurement methods of fuel consumption for passenger cars GB/T 15089, Classification of power-driven vehicles and trailers GB 18384, Electric vehicles safety requirements3 Terms and definitionsThe following terms and definitions, as well as those determined by GB/T 12539, GB/T 15089, GB 18384, GB/T 18385, GB/T 19596, GB/T 19752 and GB/T 24548, are applicable to this document. 3.1 rechargeable electrical energy storage system mode A driving mode where the energy or power of vehicle is only provided by the rechargeable electrical energy storage system (REESS).4 Test conditions4.1 Environmental requirements 4.1.1 Atmospheric temperature and atmospheric pressure The atmospheric temperature shall be 0 ℃ ~ 40 ℃; the atmospheric pressure shall be 91 kPa ~ 104 kPa. 4.1.2 Air density The air density during the test is calculated from Formula (1). Compared with the air density in the standard environment, the variation shall not exceed 7.5%. 4.1.4 Relative humidity The relative humidity shall be less than 95%, and the test shall not be conducted in rainy or foggy days. 4.2 Test equipment See Table 1 for the measurement parameters, units and accuracy. 4.3 Test mass and load distribution 4.3.1 General requirements When conducting the maximum thirty-minutes speed test, maximum speed test and acceleration performance test, the vehicle shall be loaded according to the requirements in 4.3.2 and 4.3.3; when conducting the 4% and 12% speed uphill test, maximum gradient and hill starting ability test, the vehicle shall be loaded according to the maximum authorized pay mass (including the mass of the tester and instrument), and the load shall be uniformly distributed and firmly fixed. 4.4 Vehicle conditions 4.4.1 The shape structure and technical parameters of the vehicle must be maintained as that when it leaves the factory. 4.4.2 The vehicle under test shall be loaded according to the technical requirements in 4.3. 4.5 Road conditions 4.5.1 General conditions The test shall be conducted on a dry straight or circular track. The pavement shall be hard, flat, clean and good in adhesion coefficient. 4.5.2 Straight conditions The length of measurement area shall be at least 1 000 m. The acceleration area shall be long enough so that the vehicle can achieve the maximum speed within 200 m before entering the measurement area. The longitudinal gradient of both the measurement area and the area 200 m after the acceleration area shall not exceed 0.5%. The longitudinal gradient of the acceleration area shall not exceed 4%. The lateral gradient of the measurement area shall not exceed 3%. 4.5.3 Circular track The length of the circular track shall be at least 1 000 m. The circular track is not a complete circle, but being connected by a linear part and a part approximate to a ring. The curvature radius of the curve shall be no less than 200 m. 4.5.5 Test gradient As shown in Figure 1, the length of the test road ramp shall be no less than 20 m. A transition section shall be arranged in front and at back of the test section. The straight and flat section before the slope shall be no less than 8 m. The ramp pavement shall be flat, solid, dry, uniform in gradient and good in adhesion performance.5 Test vehicle preparation5.1 Hydrogenation Hydrogen shall be added according to the manufacturer’s hydrogenation procedures. 5.2 Power regulation of conventional REESS To ensure the normal operation of fuel cell system in the vehicle and avoid the single operation of REESS during test, perform the power regulation of REESS in the following procedures before test. 5.3 Warm-up Before carrying out the test, warm up the vehicle system and components that may affect the test result, so as to meet the manufacturer’s requirement for stable temperature.6 Test items6.1 Arrangement of test items For the externally rechargeable and non-externally rechargeable vehicles, arrange the test items as follows.7 Test method7.1 Maximum speed test 7.1.1 Standard test procedures (two-direction test) The standard test procedures are as follows. 7.1.2 Test procedures in single direction The test procedures in single direction are as follows. 7.1.3 Maximum speed test procedures on circular road The maximum speed test procedures on the circular road are as follows. 7.3 Acceleration capacity test 7.3.1 Acceleration capacity test procedures 7.3.3 Data processing 7.3.3.1 Data calculation Calculate the arithmetic mean, standard deviation and variation factor (standard deviation/arithmetic mean) of all effective test data according to Formula (11), Formula (12) and Formula (13). 7.4 Speed uphill test (unnecessary for the fuel cell electric vehicles other than M1, M2 and N1 vehicles) 7.5 Maximum gradient test The maximum gradient test procedures are as follows.Appendix A(Normative) Determination method of correction factor on circular road A.1 Determine the fixed correction factor k on circular road based on the maximum allowable speed on a circular road. A.2 Determine the correction factor based on multiple speed measurements and control the continuous speed difference of two continuous measurements to be less than 30 km/h. A.3 For each vehicle speed, the following two test methods shall be carried out, while maintaining the same motor speed, according to the requirements of this document. ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al. Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of English version of GB/T 26991-2023 be delivered?Answer: The full copy PDF of English version of GB/T 26991-2023 can be downloaded in 9 seconds, and it will also be emailed to you in 9 seconds (double mechanisms to ensure the delivery reliably), with PDF-invoice.Question 2: Can I share the purchased PDF of GB/T 26991-2023_English with my colleagues?Answer: Yes. 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