Standard No.:	GB/T 44723-2024
English Name:	Hydrogen internal combustion engines—General technical specification
Chinese Name:	氢燃料内燃机 通用技术条件
Chinese Classification:	J91    Internal combustion engine and auxiliary equipment
Professional Classification:	GB    National Standard
Source Content Issued by:	SAMR, SAC
Issued on:	2024-9-29
Implemented on:	2025-4-1
Status:	valid
Target Language:	English
File Format:	PDF
Word Count:	9500 words
Translation Price(USD):	285.0
Delivery:	via email in 1 business day

Hydrogen internal combustion engines – General technical specification 1 Scope This document specifies the technical requirements, test methods, safety requirements and protective measures, inspection rules, as well as marking, packaging, transportation and storage of hydrogen internal combustion engines. This document is applicable to reciprocating internal combustion engines that use hydrogen as fuel and have a power of no more than 560 kW. 2 Normative references The following referenced documents are indispensable for the application 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 191 Packaging - Pictorial marking for handling of goods GB/T 1147.1 Small and medium power internal combustion engines - Part 1: General requirements GB/T 1147.2 Small and medium power internal combustion engines - Part 2: Test methods GB/T 1883.1 Reciprocating internal combustion engines - Vocabulary - Part 1: Terms for engine design and operation GB/T 3821 Small and medium power internal combustion engines - Cleanliness limits and measurements GB/T 4556 Reciprocating internal combustion engines - Fire protection GB/T 6388 Transport package shipping mark GB/T 6994 Electrical installation in ships - Definitions and general requirements GB/T 7184 Reciprocating internal combustion engines - Evaluation method of vibration GB 7258 Technical specifications for safety of power-driven vehicles operating on roads GB/T 10398 Small gasoline engines - Evaluation and measurement of vibration GB 14023 Vehicles, boats and internal combustion engines - Radio disturbance characteristics - Limits and methods of measurement for the protection of off-board receivers GB/T 14097 Reciprocating internal combustion engines - Limit values of emitted noise GB 14622-2016 Limits and measurement methods for emissions from motorcycles (China IV) GB 15097-2016 Limits and measurement methods for exhaust pollutants from marine engines (CHINA I, II) GB/T 15371 Reciprocating internal combustion engines - Evaluation method of torsional vibration of crankshaft system GB/T 16936 Earth-moving machinery - Test code of net power for engines GB 17691-2018 Limits and measurement method for emissions from diesel fuelled heavy-duty vehicles (CHINA VI) GB/T 17692 Measurement methods of net power for automotive engines and drive motor GB/T 18297 Performance test code for road vehicle engines GB 18352.6-2016 Limits and measurement methods for emissions from light-duty vehicles (CHINA 6) GB/T 18655 Vehicles boats and internal combustion engines - Radio disturbance characteristics - Limits and methods of measurement for the protection of on-board receivers GB/T 19055-2024 Reliability test methods for motor vehicle engines GB 20891-2014 Limits and measurement methods for exhaust pollutants from diesel engines of non-road mobile machinery (CHINA III, IV) GB 26133-2010 Limits and measurement methods for exhaust pollutants from small spark ignition engines of non-road mobile machinery (CHINA Ⅰ,Ⅱ) GB/T 28046 (all parts) Road vehicles - Environmental conditions and testing for electrical and electronic equipment CB/T 3154 Measure method for marine diesel engine CB/T 3254.2 Marine diesel engine bench test - Part 2: Test method CB/T 3256 Evaluation of vibration on marine diesel engine CB/T 3325 Evaluation of torsional vibration in shaft system of marine diesel engine CB/T 3853 Measure method for vibration in shaft system of marine diesel engine HJ 1014-2020 Emissions control technical requirements of non-road diesel mobile machinery JB/T 4198.2 Construction machinery - Part 2: Method of performance test for diesel engines JB/T 4198.3 Construction machinery - Part 3: Methods of dependability, wear test for diesel engine JB/T 5135.2 General utility small gasoline engine - Part 2: Performance test method JB/T 5135.3 General utility small gasoline engine - Part 3: Test and evaluate method of reliability and durability QC/T 471 Specifications for auto diesel engines GD 14-2020 Guidelines for nitrogen oxide emission tests and inspections of marine diesel engines GD 22-2015 Guidelines for type approval tests of electrical and electronic products 3 Terms and definitions For the purposes of this document, the terms and definitions given in GB/T 1883.1 and the following apply. 3.1 hydrogen internal combustion engine internal combustion engine using hydrogen as fuel 3.2 hydrogen damage phenomenon where the mechanical properties of metallic materials deteriorate due to the presence of hydrogen or their interaction with hydrogen Note: It includes hydrogen embrittlement and hydrogen corrosion, etc. Hydrogen embrittlement refers to the phenomenon where, after hydrogen enters a metallic material, the local hydrogen concentration reaches saturation, causing a decrease in the metal's plasticity, inducing cracks or resulting in delayed fracture. Hydrogen corrosion refers to the phenomenon where carbon in metals reacts with hydrogen to form methane bubbles in a hydrogen environment at a certain temperature and pressure. 3.3 hydrogen swelling rubber in contact with high-pressure, high-purity hydrogen undergoing hydrogen adsorption, ingress, dissolution, and diffusion, with the dissolved hydrogen causing the rubber to swell in volume (i.e., a phenomenon known as hydrogen absorption swelling) 3.4 gaseous hydrogen leakage process by which hydrogen permeates from a closed system or pipeline to the outside [Source: GB/T 24499-2009, 2.23, modified] 3.5 hydrogen supply system sum of all the devices that supply hydrogen to the hydrogen internal combustion engine, with the upper end connected to the hydrogen storage system pipeline at the application end and the lower end connected to the hydrogen internal combustion engine Note: This includes hydrogen tracks, hydrogen injectors, and other accessory devices installed on hydrogen internal combustion engines, etc.

Foreword i 1 Scope 2 Normative references 3 Terms and definitions 4 Technical requirements 4.1 General 4.2 Material requirements 4.3 General performance requirements 4.4 Consistency requirements 4.5 Emission requirements 4.6 Reliability requirements 4.7 Durability requirements 4.8 Requirements for noise 4.9 Electromagnetic compatibility (EMC) requirements 4.10 Airtightness requirements 4.11 Vibration requirements 5 Test methods 6 Safety requirements and protection measures 6.1 General 6.2 Safety requirements for complete engine 6.3 Safety requirements for related systems and components 7 Inspection rules 7.1 Inspection classification 7.2 Type approval inspection 7.3 Delivery inspection 7.4 Random inspection 8 Marking, packaging, transportation and storage 8.1 Marking 8.2 Packaging 8.3 Transportation 8.4 Storage Annex A (Informative) Main technical specifications and parameters of hydrogen internal combustion engine Annex B (Informative) Specifications of fuel for hydrogen internal combustion engine Bibliography