GB/T 45646-2025 English PDF

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GB/T 45646-2025: Greenhouse gases - The quantification method and requirement for carbon footprint of products - Internal combustion engines
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Basic data

Standard ID: GB/T 45646-2025 (GB/T45646-2025)
Description (Translated English): Greenhouse gases - The quantification method and requirement for carbon footprint of products - Internal combustion engines
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: J91
Classification of International Standard: 27.020
Word Count Estimation: 38,327
Date of Issue: 2025-04-25
Date of Implementation: 2025-11-01
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 45646-2025: Greenhouse gases - The quantification method and requirement for carbon footprint of products - Internal combustion engines

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
ICS 27.020 CCSJ91 National Standard of the People's Republic of China Greenhouse gas product carbon footprint quantification methods and requirements internal combustion engine Released on 2025-04-25 2025-11-01 Implementation State Administration for Market Regulation The National Standardization Administration issued

Table of contents

Preface III 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 4 Principle 2 4.1 Life cycle perspective 2 4.2 Relative methods and functional units 3 4.3 Iterative Method 3 4.4 Correlation 3 4.5 Integrity 3 4.6 Consistency 3 4.7 Unity 3 4.8 Accuracy 3 4.9 Transparency 3 4.10 Avoiding Double Counting 3 5 Methods for quantifying the carbon footprint of internal combustion engine products or parts of them 3 5.1 Overview 3 5.2 Determination of purpose and scope 4 5.3 Life Cycle Inventory Analysis 8 5.4 Product Carbon Footprint Impact Assessment11 5.5 Explanation of product carbon footprint results 15 6 Carbon Footprint Report of Internal Combustion Engine Products15 Appendix A (Normative) Comparison of carbon footprint of internal combustion engine products based on different products 17 A.1 General 17 A.2 Comparison requirements 17 Appendix B (Normative) Data Quality Level 18 Appendix C (Normative) Parts Emission Factor Data Collection Process 20 Appendix D (Informative) Global Warming Potential of Greenhouse Gases 21 Appendix E (Normative) Calculation Method for Greenhouse Gas Emissions from Fuel Use 22 Appendix F (Normative) Calculation of greenhouse gas emissions from components 25 F.1 Calculation of greenhouse gas emissions from the production of purchased parts 25 F.2 Calculation of greenhouse gas emissions from self-made parts production27 F.3 Use of remanufactured parts in the production and manufacturing of internal combustion engine products27 Appendix G (Informative) Carbon Footprint Report for Internal Combustion Engine Products (Template) 28 Reference 31

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1.Structure and drafting rules for standardization documents" Drafting. Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents. This document was proposed by the China Machinery Industry Federation. This document was prepared by the National Technical Committee on Standardization of Internal Combustion Engines (SAC/TC177) and the National Technical Committee on Standardization of Carbon Emission Management (SAC/TC548) jointly managed. This document was drafted by. Shanghai Jiao Tong University, China Automotive Engineering Research Institute Co., Ltd., China Internal Combustion Engine Society, Shanghai Motor Vehicle Testing and Certification Technology Research Center Co., Ltd., China Internal Combustion Engine Industry Association, COSCO Shipping Heavy Industry Co., Ltd., Shanghai Ship and Transportation Research Institute Shanghai New Energy Automobile Technology Co., Ltd., China State Shipbuilding Corporation No. 711 Research Institute, Weichai Power Co., Ltd., Guangxi Yuchai Machinery Co., Ltd., Chongqing Changan Automobile Co., Ltd., Anhui Quanchai Power Co., Ltd., Guangzhou Automobile Group Co., Ltd., Harbin Dongan Automotive Power Co., Ltd., Kunming Yunnei Power Co., Ltd., FAW Jiefang Wuxi Diesel Engine Factory of Fang Automobile Co., Ltd., Jiangsu Shanghai Jiaotong Carbon Neutral Technology Co., Ltd., Aurora Bay Technology Co., Ltd., CRRC Ziyang Locomotive Co., Ltd. Co., Ltd., Xiangyang Daan Automobile Testing Center Co., Ltd., Tianjin Internal Combustion Engine Research Institute (Tianjin Motorcycle Technology Center). The main drafters of this document are. Xie Xiaomin, Zhang Tingting, Huang Zhen, Yu Hao, Li Shusheng, Ji Weibin, Xing Min, Gong Baoli, Qian Xiaolong, Chen Yingzhan, Jia Bin, Zhu Lei, Qu Feng, Gu Dehao, Wang Decheng, Ban Zhibo, Duan Hong, Yu Lei, Wu Guangquan, Liu Kejian, Peng Hu, Liu Jianyong, Wang Yijiang, Lin He, Sun Xudong, Li Lianfeng, Guo Hua, Zheng Wei, Yang Guofeng, Ran Chengyi, Wang Jiayi, Xiao Jin, Zhan Wenfeng, Ding Qianlan. Greenhouse gas product carbon footprint quantification methods and requirements internal combustion engine

1 Scope

This document specifies the principles, quantification methods and carbon footprint reporting requirements for internal combustion engine products. This document applies to the accounting, evaluation and reporting of carbon footprint of internal combustion engine products during their full life cycle and partial life cycle.

2 Normative references

The contents of the following documents constitute essential clauses of this document through normative references in this document. For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to This document. GB/T 1147.1 Small and medium power internal combustion engines Part 1.General technical requirements GB/T 1147.2 Small and medium power internal combustion engines Part 2.Test methods GB/T 24040 Principles and framework for life cycle assessment of environmental management GB/T 24044 Requirements and guidelines for environmental management life cycle assessment GB/T 24067 Requirements and guidelines for quantification of greenhouse gas product carbon footprint GB/T 28239 Fuel consumption limits and test methods for non-road diesel engines GB/T 32150 General principles for accounting and reporting of greenhouse gas emissions from industrial enterprises GB/T 37692 Fuel consumption limits and measurement methods for small spark-ignition engines for non-road mobile machinery CB/T 3254.1 Marine diesel engine bench test Part 1.Standard reference conditions and power, fuel consumption and oil consumption Calibration

3 Terms and definitions

The terms and definitions defined in GB/T 24040, GB/T 24044, GB/T 32150 and GB/T 24067 and the following terms and definitions apply to this document. 3.1 A heat engine is a machine that burns fuel inside the machine and converts the heat energy generated by the combustion into mechanical energy. 3.2 The sum of greenhouse gas emissions and greenhouse gas removals in the product system, expressed in carbon dioxide equivalent, based on the climate change Life cycle assessment of a single impact type. Note 1.Product carbon footprint is shown in Table 1 of GB/T 24067-2024, which uses different legends to distinguish and indicate specific greenhouse gas emissions and removals. Traces can also be broken down into the various stages of their life cycle. Note 2.The quantitative results of the carbon footprint are recorded in the product carbon footprint study report, expressed as carbon dioxide equivalent (CO2e) per functional unit. [Source. GB/T 24067-2024, 3.1.1, modified] ......

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