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GB/T 25367-2024 English PDF

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GB/T 25367-2024: Electronic control common rail system for diesel engines - Fuel injector
Status: Valid

GB/T 25367: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
GB/T 25367-2024English279 Add to Cart 3 days [Need to translate] Electronic control common rail system for diesel engines - Fuel injector Valid GB/T 25367-2024
GB/T 25367-2010English139 Add to Cart 3 days [Need to translate] Electronic control common rail fuel injection system for diesel engines -- The injector -- Specifications Valid GB/T 25367-2010

PDF similar to GB/T 25367-2024


Standard similar to GB/T 25367-2024

GB/T 8243.7   GB/T 8243.6   JB/T 11880.8   GB/T 25368   GB/T 25366   

Basic data

Standard ID GB/T 25367-2024 (GB/T25367-2024)
Description (Translated English) Electronic control common rail system for diesel engines - Fuel injector
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard J94
Classification of International Standard 27.020; 43.060.40
Word Count Estimation 14,121
Date of Issue 2024-12-31
Date of Implementation 2025-04-01
Older Standard (superseded by this standard) GB/T 25367-2010
Issuing agency(ies) State Administration for Market Regulation, China National Standardization Administration

GB/T 25367-2024: Electronic control common rail system for diesel engines - Fuel injector

---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;43.060.40 CCSJ94 National Standard of the People's Republic of China Replace GB/T 25367-2010 Diesel engine electronically controlled common rail system injector assembly Released on 2024-12-31 2025-04-01 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 Technical Requirements 1 4.1 General Requirements 1 4.2 Appearance 2 4.3 Sealing 2 4.4 Opening pressure 2 4.5 Injection quantity deviation 2 4.6 Injection quantity stability 2 4.7 Oil return volume 3 4.8 Injection start delay 3 4.9 Cleanliness 3 4.10 Reliability 4 5 Test methods 4 5.1 Test conditions 4 5.2 Appearance Inspection 4 5.3 Leakage test 4 5.4 Start stress test 4 5.5 Single injection quantity test 4 5.6 Fuel injection quantity stability test 5 5.7 Oil return test 5 5.8 Injection opening delay test 5 5.9 Cleanliness test 5 5.10 Reliability Test 5 6 Inspection Rules 5 6.1 Type inspection 5 6.2 Factory Inspection 5 6.3 Random inspection 6 6.4 Sampling plan and assessment rules 6 7 Marking, packaging, transportation and storage 6 7.1 Signs 6 7.2 Packaging 6 7.3 Transportation 7 7.4 Storage 7 References 8 Table 1 Permissible deviation of single injection quantity of common rail injector under various working conditions 3 Table 2 Metal particle grade distribution standard 3 Table 3 Classification of inspection items 6

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. This document replaces GB/T 25367-2010 "Technical Specifications for Injector Assemblies of Electronic Common Rail Injection Systems for Diesel Engines" and Compared with GB/T 25367-2010, in addition to structural adjustments and editorial changes, the main technical changes are as follows. a) The scope has been changed (see Chapter 1, Chapter 1 of the.2010 edition); b) The appearance requirements of common rail injectors have been changed (see 4.2, 4.17 of the.2010 edition); c) The sealing requirements for common rail injectors have been changed (see 4.3, 4.8 of the.2010 edition); d) The opening pressure requirements of common rail injectors have been changed (see 4.4, 4.7 of the.2010 edition); e) The atomization performance requirements for common rail injectors have been deleted (see 4.9 of the.2010 edition); f) The fuel injection quantity requirements and fuel injection quantity deviation requirements of common rail injectors have been changed (see 4.5, 4.10 of the.2010 edition); g) Changed the allowable deviation requirements for single injection quantity of common rail injectors under various operating conditions (see Table 1, Table 1 of the.2010 edition); h) Changed the fuel injection quantity stability requirements of common rail injectors (see 4.6, 4.11 of the.2010 edition); i) Changed the oil return volume requirements for common rail injectors (see 4.7, 4.13 of the.2010 edition); j) The injection opening delay requirements of common rail injectors have been changed (see 4.8, 4.14 of the.2010 edition); k) The cleanliness requirements for common rail injectors have been changed (see 4.9, 4.15 of the.2010 edition); l) The reliability requirements for common rail injectors have been changed (see 4.10, 4.16 of the.2010 edition); m) The measurement accuracy requirements of the test fuel injection quantity tester have been changed (see 5.1.2, 5.1.2 of the.2010 edition); n) Deleted "It is permitted to use commercially available diesel or calibration oil that meets the National III emission standards or above" (see 5.1.7 of the.2010 edition); o) Added test methods and test equipment requirements (see 5.1.8); p) Added appearance inspection method (see 5.2); q) The sealing test method has been changed (see 5.3, 5.3 of the.2010 edition); r) Added the opening pressure test method (see 5.4); s) The single injection quantity test method has been changed (see 5.5, 5.5 of the.2010 edition); t) Added the fuel injection quantity stability test method (see 5.6); u) The test method of fuel injection quantity and fuel return quantity has been changed (see 5.7, 5.6 of the.2010 edition); v) The injector opening delay test method has been changed (see 5.8, 5.7 of the.2010 edition); w) The injector cleanliness test method has been changed (see 5.9, 5.8 of the.2010 edition); x) The injector reliability test method has been changed (see 5.10, 5.10 of the.2010 edition); y) The performance test of the injection nozzle assembly has been deleted (see 5.9 of the.2010 edition); z) Added inspection rules (see Chapter 6). 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 is under the jurisdiction of the National Fuel Injection System Standardization Technical Committee (SAC/TC396). This document was drafted by. Wuxi Fuel Pump and Nozzle Research Institute of China First Automobile Co., Ltd., Junfeng Electric Control Technology (Taizhou) Co., Ltd. Company, Nanyue Electric Control (Hengyang) Industrial Technology Co., Ltd., Shandong Liaocheng Derun Electromechanical Technology Development Co., Ltd., Longkou Long Pump Diesel Injection Shegao Technology Co., Ltd., Wuxi Weifu High-Tech Group Co., Ltd., Shandong Xinya Industrial Co., Ltd., Heavy Oil Hi-Tech Electronic Fuel Injection System Co., Ltd., Heze Hengtai Oil Tsui Oil Pump Co., Ltd., Shaoxing Yake Auto Parts Co., Ltd., Guizhou Communications Vocational and Technical College, Wenzhou Keboda Auto Parts Co., Ltd. and Beiyou Electronic Fuel Injection System (Tianjin) Co., Ltd. The main drafters of this document are. Gu Xiaolei, Xu Yalei, Song Guomin, Luo Cong, Chang Qing, Tang Lifeng, Yu Jianfeng, Xiang Heping, Xie Chenghua, Jia Yujie, Li Jing, Du Hongguang, Li Yongkui, Wang Lingyun, Miao Jinbiao, Liu Yuandong, Zhou Junming, Liang Yu, Ke Bingjin, Zuo Zhaowei, Qin Long, Liao Shoushi, Zhang Xiangshan. This document was first published in.2010 and this is the first revision. Diesel engine electronically controlled common rail system injector assembly

1 Scope

This document specifies the technical requirements, test methods, inspection rules, marking, packaging, transportation, and other aspects of the electronic common rail system injector assembly for diesel engines. Transport and storage. This document is applicable to the design and manufacture of electronically controlled common rail system injector assemblies for diesel engines.

2 Normative references

The contents of the following documents constitute the 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 2828.1 Sampling procedures for inspection by attributes Part 1.Sampling plans for batch inspection based on the acceptance quality limit (AQL) GB/T 8029 Diesel engine fuel injection pump calibration oil GB/T 10826.5 Fuel injection device vocabulary Part 5.Common rail fuel injection system GB 19147 Diesel for vehicles GB/T 25365.1 Technical requirements for electronically controlled common rail injection systems for diesel engines Part 1.Mechanical GB/T 25366 Common rail pipe assembly for diesel engine electronically controlled common rail system GB/T 25368 High-pressure fuel supply pump assembly for diesel engine electronically controlled common rail system JB/T 9734 Technical requirements for fuel injection pump test bench JB/T 11416 Reliability assessment method, test method, fault classification and judgment rules for injector assemblies JB/T 12850 Cleanliness test of diesel engine electronic common rail system

3 Terms and definitions

The terms and definitions defined in GB/T 10826.5 and GB/T 25365.1 and the following apply to this document. 3.1 Opening pressure openpressure When the common rail injector is working, the minimum rail pressure when the stable single injection volume is 1mm3~2mm3. 3.2 Backfueldelivery The amount of oil that returns to the low-pressure oil circuit when the common rail injector is working.

4 Technical requirements

4.1 General requirements The electronically controlled common rail system injector assembly for diesel engines (hereinafter referred to as "common rail injector") shall be manufactured in accordance with the product drawings and technical specifications approved through the prescribed procedures. The components of the common rail injector shall be tested and inspected in accordance with the test methods approved by the prescribed procedures. The equipment is assembled according to the approved assembly process in accordance with the prescribed procedures. During the test, fuel that complies with the provisions of GB 19147 is used to ensure normal operation.

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