GB/T 42680-2023Test method for liquid fuel atomization characteristics using phase Doppler technique (English PDF)
基于相位多普勒技术的液体燃料雾化特性测试方法
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
May 23, 2023
Implementation date
December 1, 2023
Scope
GB/T 42680-2023 is the English-translated version of 基于相位多普勒技术的液体燃料雾化特性测试方法.
This document describes the method for testing the atomization characteristics of liquid fuels by the phase Doppler technique: the principle of the test, the test equipment, the test conditions, the test procedure, the processing of the data and the test record.
The document applies to the testing of the atomization characteristics of liquid fuels.
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Document preview — GB/T 42680-2023
National Standard of the People's Republic of China
- ICS
- 27.060
- Classification
- F 04
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- Preface
- 1 Scope
- 2 Normative references
- 3 Terms and Definitions
- 4 Test Principle
- 5 Test equipment
- 6 Test conditions
- 7 Test Step
- 8 Data processing
- 9 test records
- Appendix A (Informative) Test Record Format
- Reference
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.
1 Scope
This document describes the method for testing the atomization characteristics of liquid fuels based on phase Doppler technology, including test principles, test equipment, Test conditions, test steps, data processing and test records.
This document applies to the testing of the atomization characteristics of liquid fuels.
2 Normative references
The contents of the following documents constitute the essential provisions of this document through normative references in the text. Among them, dated references For documents, only the version corresponding to the date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to this document.
GB/T 41770-2022 Test method for liquid fuel injection characteristics based on backlight imaging technology
3 Terms and Definitions
The following terms and definitions apply to this document.
3.1 Atomization characteristics
Microscopic characteristic parameters used to characterize droplets formed after liquid fuel injection breakup.
Note: including droplet velocity and droplet diameter.
3.1.1 Droplet velocity
The velocity of droplets formed after liquid fuel injection breaks up.
3.1.2 Droplet diameter
The diameter of the droplets formed after liquid fuel jet breakup.
3.2 Doppler effect
When the wave source and the observer move relative to each other, the frequency received by the observer is different from the frequency emitted by the wave source.
3.3 Phase Doppler analyzer
Using the Doppler effect, it is a test system that simultaneously measures the droplet velocity and droplet diameter.
3.4 Measurement body probe volume
In the phase Doppler analyzer, the test space formed by the intersection of multiple laser beams.
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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
Referenced standards
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