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

小艇往复式内燃机排放测量气体和颗粒排放物的试验台测量

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Issued by

State Administration for Market Regulation, China National Standardization Administration

Level / Type

National · Recommended

Issue date

December 31, 2019

Implementation date

July 1, 2020

Scope

GB/T 38340-2019 is the English-translated version of 小艇往复式内燃机排放测量气体和颗粒排放物的试验台测量.

GB/T 38340-2019 is the Chinese standard "Small craft - Reciprocating internal combustion engines exhaust emission measurement - Test-bed measurement of gaseous and particulate exhaust emissions".

Its scope clause reads: 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. Its clauses include terms and definitions.

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Document preview — GB/T 38340-2019

National Standard of the People's Republic of China

ICS: 47.080
Classification: U 37

Issued by: State Administration for Market Regulation, China National Standardization Administration

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

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%.

GB/T 40787 | GB/T 18572 | GB/T 16696 | GB/T 11686.1 | […]

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 138 pages — is available in the English PDF.

Referenced standards

Normative references

ISO 8178 · ISO 15550 · ISO 5725 · ISO 8666 · ISO 14396

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