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GB/T 18386.2-2022: Test methods for energy consumption and range of electric vehicles - Part 2: Heavy-duty commercial 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
Similar standardsGB/T 18386.2-2022: Test methods for energy consumption and range of electric vehicles - Part 2: Heavy-duty commercial 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/GBT18386.2-2022 GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 43.020 CCS T 47 Replacing GB/T 18386-2017 Test Methods for Energy Consumption and Range of Electric Vehicles – Part 2.Heavy-Duty Commercial Vehicles Issued on. OCTOBER 12, 2022 Implemented on. MAY 01, 2023 Issued by. State Administration for Market Regulation; Standardization Administration of the People’s Republic of China. Table of ContentsForeword... 3 Introduction... 5 1 Scope... 7 2 Normative References... 7 3 Terms and Definitions... 8 4 Test Conditions... 8 4.1 Environmental conditions... 8 4.2 Measurement parameters, units and accuracy... 8 4.3 Test vehicle... 8 4.4 Test cycle... 10 5 Test Procedure... 10 5.1 General requirements... 10 5.2 Tolerance... 11 5.3 Conditions for terminating the test... 11 5.4 Initial charging of REESS... 12 5.5 Test on range... 13 5.6 Measurement of REESS charging and energy... 15 6 Calculation Method of Energy Consumption and Range... 16 6.1 General... 16 6.2 Energy consumption... 17 6.3 Range... 18 7 Driving Modes... 20 7.1 General requirements... 20 7.2 Selection of driving mode... 21 Appendix A (Normative) Determination of REESS Current and Voltage... 23ForewordThis Document was drafted as per the rules specified in GB/T 1.1-2020 Directives for Standardization – Part 1.Rules for the Structure and Drafting of Standardizing Documents. This Document is Part 2 of GB/T 18386 Test Methods for Energy Consumption and Range of Electric Vehicles. GB/T 18386 has published the following parts. --- Part 1.Light-Duty Vehicles; --- Part 2.Heavy-Duty Commercial Vehicles. This Document partially replaced GB/T 18386-2017 Electric Vehicles – Energy Consumption and Range - Test Procedures. Compared with GB/T 18386-2017, the major technical changes of this Document are as follows besides the structural adjustment and editorial modification. a) Change the scope; and add the provisions on on non-applicable models and models to be implemented by reference (see Clause 1 of this Edition; Clause 1 of 2017 Edition); b) Change the environmental requirements (see 4.1 of this Edition; 4.3.3 of 2017 Edition); c) Change the test cycle from CCBC and C-WTVC to China Heavy-Duty Commercial Vehicle Test Cycle (CHTC); and add the correction method of the test cycle when the maximum speed of the vehicle is less than the maximum speed of CHTC (see 4.4 of this Edition; 4.4.3 of 2017 Edition); d) Change the tolerance requirements of the test cycle (see 5.2 of this Edition; 4.4.2 of 2017 Edition); e) Change the initial charging procedure of REESS (see 5.4 of this Edition; 4.4.4 of 2017 Edition); f) Change the test procedure; add the shortening method; and meanwhile delete the constant velocity method (see 5.5 of this Edition; 4.4.5.2.2, 4.4.5.3.2 of 2017 Edition); g) Change the calculation method of test results (see 6.2, 6.3 of this Edition; 4.5.2 of 2017 Edition); h) Change the selection of the driving mode (see Clause 7 of this Edition; 4.3.4 of 2017 Edition); i) Add the test method of REESS current and voltage (see Appendix A). Please note some contents of this Document may involve patents. The issuing agency of this Document shall not assume the responsibility to identify these patents. This Document was proposed by the Ministry of Industry and Information Technology of the People’s Republic of China. This Document shall be under the jurisdiction of National Technical Committee of Auto Standardization (SAC/TC 114). Drafting organizations of this Document. China Automotive Technology and Research Center Co., Ltd.; China Merchants Testing Vehicle Technology Research Institute Co., Ltd.; Xiamen King Long United Automotive Industry Co., Ltd.; Yutong Bus Co., Ltd.; BYD Automobile Industry Co., Ltd.; Beiqi Foton Motor Co., Ltd.; FAW Jiefang Automotive Co., Ltd.; Dongfeng Liuzhou Motor Co., Ltd.; Xiamen Golden Dragon Bus Co., Ltd.; Anhui Jianghuai Automobile Group Corp., Ltd.; Zhejiang Geely New Energy Commercial Vehicles Group Co., Ltd.; China National heavy Duty Truck Group Co., Ltd.; SAIC Maxus Automotive Co., Ltd.; Shanghai Motor Vehicle Inspection Certification & Tech Innovation Center Co., Ltd.; and Changchun Automotive Test Center Co., Ltd. Chief drafting staffs of this Document. Zheng Tianlei, Liu Zhichao, Gong Gang, Zhuo Aihong, Hao Bin, Gao Dongzhi, Peng Wang, Liu Yu, Xiong Xin, Yuhan Zhengnan, Wang Shiqi, Wang Fengbin, Yang Chao, Liu Shaohui, Lin Changbo, Yang Jianjun, Guo Xiaomeng, Jia Lijie, Chen Yan, Dong Xiaokun, Bai Xuesen, Chang Lian, Tang Xiaohua, Zhou Xianyong, Li Hong, and Bian Haodong. The historical editions replaced by this Document are as follows. --- GB/T 18386-2001 was first-time published in 2001; first-time revised in 2005; second- time revised in 2017. --- It is third-time revised hereby; partially published; this Document is Part 2.1 ScopeThis Document specifies the test methods for the energy consumption and driving range of pure electric vehicles. This Document is applicable to pure electric vehicles with a maximum design total mass of more than 3500kg, including trucks, semi-trailer towing vehicles, passenger cars, dump trucks and city buses. Concrete mixer trucks can refer to the relevant measurement methods of dump trucks; and other special transport vehicles can refer to the relevant measurement methods of trucks. This Document does not apply to special operation vehicles, including van type special operation vehicles, tank type special operation vehicles, special dump operation vehicles, grate type special operation vehicles, lifting special operation vehicles and special-structured special operation vehicles, etc.2 Normative ReferencesThe provisions in following documents become the essential provisions of this Document through reference in this Document. For the dated documents, only the versions with the dates indicated are applicable to this Document; for the undated documents, only the latest version (including all the amendments) is applicable to this Document. GB 7258 Safe Specification for Motor Vehicles Operating on Roads GB/T 12534 Motor Vehicles - General Rules of Road Test Method GB 18352.6-2016 Limits and Measurement Methods for Emissions from Light-Duty Vehicles (CHINA 6)3 Terms and DefinitionsFor the purposes of this Document, the terms and definitions given in GB 7258, GB/T 19596, GB 18352.6-2016, GB/T 38146.2-2019 apply.4 Test Conditions4.1 Environmental conditions 4.1.1 The recommended ambient temperature is (23±5) °C. The ambient temperature range can be extended to 5°C~35°C upon suggestion by the automobile manufacturer and confirmed by the inspection agency. 4.2 Measurement parameters, units and accuracy 4.2.1 The test equipment used for the test shall meet the relevant requirements of CD.1, CD.2 and CD.5 in GB 18352.6-2016. 4.3 Test vehicle 4.3.1 Test quality 4.3.2 Vehicle conditions 4.3.2.1 The test vehicle shall be loaded according to the technical requirements of each test. 4.3.2.5 The test driver shall make the rechargeable energy storage system (REESS) work at the normal operating temperature according to the operating procedures recommended by the vehicle manufacturer. 4.3.2.6 Before the test, the test vehicle shall drive at least 300km with the REESS installed on the test vehicle. 4.3.3 Setting of road load The measurement of running resistance and the simulation on the chassis dynamometer shall be in accordance with the provisions in GB/T 27840.When carrying out the sliding test on the road and chassis dynamometer, the function of the braking energy recovery system shall be shielded. During the sliding test on the road and chassis dynamometer, other parts of the car should be in the same state (such as air conditioning off, etc.). 4.4 Test cycle 4.4.1 The test vehicle shall measure the energy consumption and range of the vehicle in accordance with the China Heavy-Duty Commercial Vehicle Test Cycle (CHTC) stipulated in Appendix A of GB/T 38146.2-2019. 4.4.2 If the maximum vehicle speed of the vehicle is less than the maximum vehicle speed of CHTC, when the target vehicle speed is greater than the maximum vehicle speed, the test cycle shall be corrected according to the provisions of CA.5 in GB 18352.6-2016.5 Test Procedure5.1 General requirements The same test procedure shall be used to determine the energy consumption and range, and the test procedure includes the following three steps. 5.2 Tolerance 5.2.1 If the maximum vehicle speed of the vehicle is no less than the maximum vehicle speed of CHTC, the test shall be carried out according to the test cycle specified in 4.4.1.The speed tolerance and time tolerance of the test cycle shall meet the requirements of the tolerance and reference curve given in Figure 1.Each point in Figure 1 gives a speed tolerance of ±3km/h and a time tolerance of ±1s. In each test cycle, the cumulative time allowed to exceed the tolerance range does not exceed 15s. The total time out of tolerance shall be noted in the test report. 5.3 Conditions for terminating the test 5.3.1 When carrying out the test specified in 5.5, the test shall be stopped when the following situations occur. 5.3.2 When the condition for ending the test is reached, keep the gear position unchanged, let the vehicle slide to 5km/h, and then depress the braking pedal to stop. 5.4 Initial charging of REESS 5.4.1 General Unless the automobile manufacturer or REESS manufacturer has other provisions, the initial charging of REESS can be carried out in accordance with the provisions in 5.4.2 and 5.4.3. The initial charging of the REESS refers to the first-time charging of the REESS after receiving the vehicle. If the specified several tests or measurements are carried out consecutively, the first-time charging may be considered as the initial charging. 5.4.3 Charging of REESS 5.4.3.1 Conventional charging Conductive charging shall be used to charge REESS. If the vehicle has both DC and AC charging methods, it shall be selected according to the suggestion of the automobile manufacturer. REESS recommends charging in one of the following ways at the ambient temperature specified in 4.1. 5.5 Test on range 5.5.1 Test options The moment is recorded at the end of the REESS charging. Within 12 hours thereafter, start the test according to the prescribed test procedure. During this period, ensure that the vehicle is placed at the ambient temperature specified in 4.1. 5.5.3 Shortening method 5.5.3.1 Speed segments The speed segment of the shortening method is composed of 2 test cycle segments and 2 constant speed segments, as shown in Figure 2 for a schematic diagram. Among them, DS1 and DS2 are test cycle sections, each containing 2 test cycles specified in 4.4; CSSM and CSSE are constant speed sections, composed of relatively high constant vehicle speed, to discharge as soon as possible and reduce test time. Through two test cycle sections, calculate the energy consumption and range of the vehicle respectively according to the provisions of 6.2 and 6.3.2. Figure 2 – Schematic Diagram of Speed Segment Compositions by Shortening Method 5.5.3.2 Constant speed segment 5.6 Measurement of REESS charging and energy 5.6.1 After the end of the test, the vehicle shall be charged within 120 min according to the provisions of 5.4.3.1.When the requirements of 5.4.3.2 are met, the REESS charging ends. Verification agency confirmed as per suggestion of the vehicle manufacturer Max. total soaking time Range in constant speed segment CSSM 5.6.2 A power measurement device shall be installed between the vehicle REESS and the power supply equipment to measure the power (EAC) charged from the external power source and the charging time.6 Calculation Method of Energy Consumption and Range6.1 General 6.1.1 Relevant formulas for calculating energy consumption and range In order to calculate the energy consumption and range of the vehicle, Formulas (2) to (4) are essential. 6.1.2 Special requirements for test results For vehicles whose maximum speed is less than the maximum speed of the test cycle, when the test is carried out, the energy consumption and range results shall be recorded in the test report and the maximum speed shall be explained. 6.2 Energy consumption Energy consumption is calculated according to Formula (5). 6.3 Range 6.3.1 Scope based on conventional working conditions The range based on the conventional working condition method specified in 5.5.2 is calculated according to Formula (6).7 Driving Modes7.1 General requirements 7.1.1 The automobile manufacturer shall select the test driving mode according to 7.2.This mode shall enable the vehicle to follow the test cycle specified in 4.4 within the speed tolerance range specified in 5.2. 7.1.2 Automobile manufacturers shall provide proof of the following circumstances to the competent authority. 7.2 Selection of driving mode 7.2.1 If there is a main mode, and this mode can make the vehicle follow the test cycle specified in 4.4.1 during the test, then select this mode. 7.2.3 If there is no mode that can make the vehicle follow the test cycle specified in 4.4.1 during the test, the test cycle shall be corrected according to the provisions of 4.4.2. ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al. 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