GB/T 38340-2019 English PDF

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GB/T 38340-2019: Small craft - Reciprocating internal combustion engines exhaust emission measurement - Test-bed measurement of gaseous and particulate exhaust emissions
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 38340-2019	1554	Add to Cart	6 days	Small craft - Reciprocating internal combustion engines exhaust emission measurement - Test-bed measurement of gaseous and particulate exhaust emissions	Valid

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Basic data

Standard ID: GB/T 38340-2019 (GB/T38340-2019)
Description (Translated English): Small craft - Reciprocating internal combustion engines exhaust emission measurement - Test-bed measurement of gaseous and particulate exhaust emissions
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: U37
Classification of International Standard: 47.080
Word Count Estimation: 82,869
Date of Issue: 2019-12-31
Date of Implementation: 2020-07-01
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 38340-2019: Small craft - Reciprocating internal combustion engines exhaust emission measurement - Test-bed measurement of gaseous and particulate exhaust emissions

---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.
(Small boat reciprocating internal combustion engine emission measurement Test bench measurement of gas and particulate emissions) ICS 47.080 U37 National Standards of People's Republic of China Small boat reciprocating internal combustion engine emission measurement Test bench measurement of gas and particulate emissions (ISO 18854..2015, IDT) 2019-12-31 release 2020-07-01 implementation State Administration of Market Supervision Published by the National Standardization Administration

Contents

Foreword Ⅴ 1 Scope 1 2 Normative references 1 3 Terms and definitions 1 4 Symbols and acronyms 3 4.1 General symbols 3 4.2 Fuel composition symbols 5 4.3 Chemical composition symbols 5 4.4 Abbreviations 6 5 Test conditions 6 5.1 Engine test conditions 6 5.2 Supercharged Intercooled Engine 7 5.3 Power 7 5.4 Specific test conditions 7 6 Test fuel 8 7 Application of engine series concept and selection of mother machine 8 8 Measuring equipment and data to be measured 8 8.1 General 8 8.2 Technical requirements for dynamometers 9 8.3 Exhaust flow 9 8.4 Accuracy 11 8.5 Determination of gas composition 12 8.6 Determination of particulate matter 15 9 Calibration of the Analyzer 18 9.1 General 18 9.2 Calibration gas 18 9.3 Operating Procedures of the Analyzer and Sampling System 19 9.4 Leak test 19 9.5 Calibration procedure 19 9.6 Calibration of Tracer Gas Analyzer for Exhaust Gas Flow Measurement 20 9.7 NOx Converter Efficiency Test 20 9.8 Adjusting the Flame Ionization Detector (FID) 22 9.9 Interference from CO, CO2, NOx, O2, NH3 and N2O analyzers 24 9.10 Calibration interval 28 10 Calibration of particle measurement systems 28 10.1 General 28 10.2 Calibration procedure 28 10.3 Checking partial flow conditions 28 10.4 Calibration interval 28 11 Calibration of Constant Volume Sampling (CVS) Full Flow Dilution System 29 11.1 General 29 11.2 Calibration of Positive Displacement Pump (PDP) 29 11.3 Calibration of Critical Flow Venturi (CFV) 30 11.4 Calibration of Subsonic Venturi (SSV) 30 11.5 Overall System Verification 32 12 Test cycle (operating conditions) 32 12.1 General 32 12.2 Test cycle 32 13 Test run 34 13.1 Preparation of Sampling Filter Paper 34 13.2 Installation of test equipment 34 13.3 Starting the Dilution System and Engine 34 13.4 Adjustment of Dilution Ratio 34 13.5 Determination of test points 35 13.6 Analyzer Inspection 35 13.7 Test cycle 13.8 Retest Analyzer 36 13.9 Test Report 36 14 Data Evaluation of Gas and Particulate Emissions 36 14.1 Gas emissions 36 14.2 Particulate emissions 36 15 Calculation of gas emissions 37 15.1 General 37 15.2 Determination of exhaust flow 15.3 Dry/Wet Base Correction 37 15.4 Humidity and Temperature Correction for NOx 38 15.5 Calculation of emission mass flow 39 15.6 Specific Emission Calculations 42 16 Calculation of particulate emissions 43 16.1 Moisture Correction Factors for Particulates 43 16.2 Partial Flow Dilution Systems 16.3 Full Flow Dilution Systems 16.4 Calculation of Mass Flow of Particulates 44 16.5 Calculation of Specific Emissions 45 16.6 Effective weighting factor 45 17 Determination of gas emissions 45 17.1 General 45 17.2 Main exhaust components CO, CO2, HC, NOx, O2 45 17.3 Ammonia Analysis 17.4 Methane Analysis 17.5 Analysis of Methanol 53 17.6 Formaldehyde Analysis 54 18 Determination of particulate matter 55 18.1 General 55 18.2 Dilution System 18.3 Particle Sampling Systems References 73

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard uses the translation method equivalent to ISO 18854..2015 "Measurement of gas and particulate emissions from small boat reciprocating internal combustion engines" Test bench measurement. The Chinese documents that have a consistent correspondence with the international documents referenced normatively in this standard are as follows. --- GB/T 6379.1-2004 Accuracy of measurement methods and results (correctness and precision) Part 1. General principles and definitions (ISO 5725-1..1994, IDT); --- GB/T 6379.2-2004 Accuracy of measurement methods and results (correctness and precision) Part 2. Determine standard measurement Basic method for repeatability and reproducibility of quantitative methods (ISO 5725-2..1994, IDT); --- GB/T 19916-2005 Main data of small boats (ISO 8666..2002, IDT); --- GB/T 21405-2008 Determination and measurement methods for engine power of reciprocating internal combustion engines Exhaust pollutant emission test Additional requirements (ISO 14396..2002, IDT). This standard was proposed and managed by the National Small Boat Standardization Technical Committee (SAC/TC241). This standard was drafted. China Shipbuilding Industry Comprehensive Technical and Economic Research Institute, Guangdong Lianjie Biotechnology Co., Ltd. The main drafters of this standard. Zhu Jiashuai, Sun Yaogang, Liu Wei, Wu Yongfeng, Zhang Jun, and Huang Zhicong. Small boat reciprocating internal combustion engine emission measurement Test bench measurement of gas and particulate emissions

1 Scope

This standard specifies the test bench measurement and evaluation methods for gas and particulate emissions under steady-state conditions of reciprocating internal combustion engines to determine each Weighted value of exhaust pollutants. The various engine load and speed combinations reflect the different uses of the engine. This standard applies to marine reciprocating internal combustion engines installed on small boats with a hull length of no more than 24m.

2 Normative references

The following documents are essential for the application of this document. For dated references, only the dated version applies to this article Pieces. For undated references, the latest version (including all amendments) applies to this document. GB/T 8190.1-2010 Emission measurement of reciprocating internal combustion engines-Part 1. Test bench measurement of gas and particulate emissions (ISO 8178-1..2006, IDT) GB/T 8190.6-2006 Emission measurement of reciprocating internal combustion engines-Part 6. Measurement results and test reports (ISO 8178-6. 2000, IDT) GB/T 21404-2008 General requirements for determination and measurement of engine power of internal combustion engines (ISO 15550..2002, IDT) ISO 5725-1 Accuracy of measurement methods and results (correctness and precision) Part 1. General principles and definitions [Accuracy (truenessandprecision) ofmeasuremethodsandresults-Part 1. Generalprinciplesanddefini- tions] ISO 5725-2 Accuracy of measurement methods and results (correctness and precision) Part 2. Determination of repeatability of standard measurement methods Basic methods with reproducibility [Accuracy (truenessandprecision) ofmeasurementmethodsandresults- Part 2. Basicmethodforthedeterminationofrepeatabilityandreproducibilityofastandardmeasure- mentmethod] ISO 8666 Smallcraft-Principaldata ISO 14396 Measurement and testing methods for engine power of reciprocating internal combustion engines Recharge requirements (Reciprocatinginternalcombustionengines-Determinationandmethodforthemeasurement ofenginepower-AdditionalrequirementsforexhaustemissiontestsinaccordancewithISO 8178)

3 terms and definitions

The terms and definitions defined in ISO 8666 and the following apply to this document. 3.1 Particulate matter Dilute the exhaust gas with clean filtered air so that the gas temperature measured immediately upstream of the main filter paper is greater than 315K (42 ° C) and not greater than At 325K (52 ° C), the material collected on the specified filter medium. Note 1. Particulate matter is mainly composed of carbon, condensed hydrocarbons, sulfates and bound water. Note 2. Particulate matter as defined in this standard is essentially the same in composition and weight as particles or dust sampled from undiluted exhaust gas directly by hot filtration. with. It has been proven that the measurement of particulate matter described in this standard is only effective for fuels with a sulfur content of less than 0.8%. ......

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