GB/T 41770-2022 English PDF

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GB/T 41770-2022: Test method for liquid fuel injection using backlit imaging
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 41770-2022	339	Add to Cart	4 days	Test method for liquid fuel injection using backlit imaging	Valid

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Basic data

Standard ID: GB/T 41770-2022 (GB/T41770-2022)
Description (Translated English): Test method for liquid fuel injection using backlit imaging
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: F04
Classification of International Standard: 27.010
Word Count Estimation: 18,155
Date of Issue: 2022-10-14
Date of Implementation: 2022-10-12
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 41770-2022: Test method for liquid fuel injection using backlit imaging

---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.
Test method for liquid fuel injection using backlit imaging ICS 27.010 CCSF04 National Standards of People's Republic of China Liquid fuel injection characteristics based on backlight imaging technology testing method Published on 2022-10-12 2022-10-12 Implementation State Administration for Market Regulation Released by the National Standardization Administration directory Preface I 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 4 Test equipment 3 4.1 Liquid fuel injection characteristic test system 3 4.2 Test Environment 3 4.3 Fuel injection system 5 4.4 Image acquisition system 5 4.5 Synchronous Control System 5 5 Test Condition 6 5.1 Test environmental conditions 6 5.2 Tank Fuel Temperature 6 5.3 Injector fuel temperature 6 5.4 System Preparation Conditions 6 5.5 Injection control parameters 7 6 Test Step 7 6.1 Arrange and install test equipment 7 6.2 Adjusting the shooting area 7 6.3 Adjust light source, lens and camera parameters 7 6.4 Taking scale images 7 6.5 Checking the synchronization control signal 7 6.6 Camera recording 7 6.7 Test Record 7 6.8 Cleaning Optical Components 7 6.9 Repeat Test 8 7 Data processing 8 7.1 Determination of spray penetration distance and spray cone angle 8 7.2 Image processing 8 7.3 Obtaining spray penetration distance and spray cone angle 9 7.4 Data representation 9 8 Test records9 Appendix A (Informative) Principle of Otsu's Method for Calculating Threshold 11 Appendix B (informative) Fog beam image program processing method 13 Appendix C (Informative) Test Record Format 14 Reference 15

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 of Standardization Documents" drafted. Please note that some content of this document may be patented. The issuing agency of this document assumes no responsibility for identifying patents. This document is proposed and managed by the National Standardization Technical Committee of Combustion Energy Conservation and Purification (SAC/TC441). This document was drafted by. Beijing Institute of Technology, Hefei Shunchang Distributed Energy Comprehensive Application Technology Co., Ltd., University of Science and Technology of China, Tsinghua University, Weichai Power Co., Ltd., Zhejiang University, Hefei Product Quality Supervision and Inspection Institute, Huazhong University of Science and Technology, Shanghai Communications University, Anhui Institute of Quality and Standardization, Anhui Fengxing New Material Technology Co., Ltd., China Institute of Testing Technology, Southwest Jiaotong University Science, North China Engine Research Institute, Dongfeng Commercial Vehicle Co., Ltd., Dalian University of Technology, Anhui Special Equipment Inspection Institute, Anhui Guoxingsheng Physical Chemistry Co., Ltd., BYD Automobile Industry Co., Ltd., FAW Jiefang Automobile Co., Ltd., Anhui Quanchai Power Co., Ltd., Bengbu Tianyi Boiler Manufacturing Co., Ltd., National Coal Chemical Product Quality Supervision and Inspection Center (Anhui), System Engineer of the Academy of Military Sciences of the Chinese People's Liberation Army Cheng Research Institute, Nanjing Golden Hammer Machinery Equipment Co., Ltd., Suzhou Anhongtai New Materials Co., Ltd. The main drafters of this document. He Xu, Lin Qizhao, Wu Yue, Ma Xiao, Li Yanfei, Li Zhijie, Ye Taohong, Gu Chaoguang, Cheng Leming, Ling Fei, Jin Shiping, He Liqun, Zhou Yuegui, Zhang Wenqiu, Chen Weixin, Cao Jiangping, Zhu Minhao, Li Yaozong, Yin Yong, Qiao Xinqi, Su Qingyun, Yang Biying, Ding Shengbin, Jiang Wei, Ge Dazhong, Lu Guoxiang, Yu Liu, Wang Shaoyou, Yao Jie, Liu He, Wang Jinyong, Liu Kehua, Wang Huibin, Qin Zhengbing. Liquid fuel injection characteristics based on backlight imaging technology testing method

1 Scope

This document specifies the test equipment, test conditions, and test procedures for liquid fuel injection characteristics testing using backlight imaging technology. The requirements for data processing and test recording were confirmed. This document applies to injection testing of various liquid fuels.

2 Normative references

The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, dated citations documents, only the version corresponding to that date applies to this document; for undated references, the latest edition (including all amendments) applies to this document. GB/T 27418-2017 Evaluation and representation of measurement uncertainty

3 Terms and Definitions

The following terms and definitions apply to this document. 3.1 injector A device that sprays a certain amount of liquid fuel at a higher pressure to disperse it into droplets. [Source. GB/T 10826.2-2008, 2.1, with modifications] 3.2 injector hole nozzlehole A hole in the injector head for injecting liquid fuel into the environment. [Source. GB/T 6809.11-2018, 3.3.101, with modifications] 3.3 Inlet socket fuelinletconnection The part of the injector body used to install the high-pressure fuel line. [Source. GB/T 10826.2-2008,7.15] 3.4 Intermittently supplied fuel injection of liquid fuel. 3.5 continuous-flowinjection Fuel injection with continuous supply of liquid fuel. [Source. GB/T 6809.11-2018, 3.3.5, with modifications] ......

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