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ISO 8178-9:2019 Reciprocating internal combustion engines - Exhaust emission measurement - Part 9: Test cycles and test procedures for measurement of exhaust gas smoke emissions from compression ignition engines using an opacimeter >
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ISO 8178-9:2019 Reciprocating internal combustion engines - Exhaust emission measurement - Part 9: Test cycles and test procedures for measurement of exhaust gas smoke emissions from compression ignition engines using an opacimeter, 2019
- Foreword
- Introduction
- 1 Scope
- 2 Normative references
- 3 Terms and definitions
- 4 Symbols and abbreviated terms
- 4.1 Symbols
- 4.2 Abbreviated terms
- 5 Test conditions
- 6 Test fuels
- 7 Measurement equipment and accuracy
- 7.1 General
- 7.2 Engine and ambient related testing equipment
- 7.3 Opacimeters
- 7.3.1 General
- 7.3.2 Types of opacimeters
- 7.3.3 Performance Specifications
- 7.3.4 Calibration of the opacimeter
- 8 Test run execution
- 8.1 Installation of the measuring equipment
- 8.1.1 General
- 8.1.2 Exhaust pipe
- 8.1.3 Rain caps
- 8.1.4 Field testing
- 8.2 Checking of the opacimeter
- 8.3 Test cycle
- 9 Data evaluation and calculation
- 9.1 Data evaluation
- 9.1.1 General requirements — Opacimeters
- 9.1.2 Beer-Lambert relationships
- 9.1.3 Data conversion
- 9.1.4 Effective optical path length input values
- 9.2 Signal filter algorithm
- 9.2.1 General
- 9.2.2 Calculation of filter rise time and Bessel constants
- 9.2.3 Calculation of Bessel filtered smoke
- 9.3 Alternative signal handling
- 9.3.1 General
- 9.3.2 Alternative specifications
- 10 Opacimeter Design Specifications
- 10.1 General
- 10.2 Full-flow opacimeter
- 10.2.1 General
- 10.2.2 Components of a full-flow opacimeter
- 10.3 Determination of effective optical path length (LA)
- 10.3.1 General
- 10.3.2 External versus internal tailpipe dimensions
- 10.4 Partial-flow-opacimeter
- 10.4.1 General
- 10.4.2 Components of partial-flow opacimeter
- Annex A (informative) Overview particulate and soot measurement methods
- Annex B (informative) Example of calculation procedure
- Annex C (informative) Remarks on test cycles
- Annex D (normative) Test cycle for variable-speed non-road engines
- Annex E (normative) Test cycle for constant-speed non-road engines
- Annex F (normative) Test cycle for marine propulsion engines
- Annex G (normative) Test cycle for variable speed engines type F (rail traction)
- Annex H (informative) Test at steady speeds over full-load curve
- Annex I (normative) Reporting smoke test results
- Bibliography [Go to Page]