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Code of Federal Regulations (Last Updated: May 6, 2024) |
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Title 40 - Protection of Environment |
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Chapter I - Environmental Protection Agency |
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SubChapter C - Air Programs |
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Part 91 - Control of Emissions from Marine Spark-Ignition Engines |
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Subpart E - Gaseous Exhaust Test Procedures |
| § 91.401 - Scope; applicability. |
| § 91.402 - Definitions. |
| § 91.403 - Symbols and abbreviations. |
| § 91.404 - Test procedure overview. |
| § 91.405 - Recorded information. |
| § 91.406 - Engine parameters to be measured and recorded. |
| § 91.407 - Engine inlet and exhaust systems. |
| § 91.408 - Pre-test procedures. |
| § 91.409 - Engine dynamometer test run. |
| § 91.410 - Engine test cycle. |
| § 91.411 - Post-test analyzer procedures. |
| § 91.412 - Data logging. |
| § 91.413 - Exhaust sample procedure - gaseous components. |
| § 91.414 - Raw gaseous exhaust sampling and analytical system description. |
| § 91.415 - Raw gaseous sampling procedures. |
| § 91.416 - Intake air flow measurement specifications. |
| § 91.417 - Fuel flow measurement specifications. |
| § 91.418 - Data evaluation for gaseous emissions. |
| § 91.419 - Raw emission sampling calculations. |
| § 91.420 - CVS concept of exhaust gas sampling system. |
| § 91.421 - Dilute gaseous exhaust sampling and analytical system description. |
| § 91.423 - Exhaust gas analytical system; CVS grab sample. |
| § 91.424 - Dilute sampling procedure - CVS calibration. |
| § 91.425 - CVS calibration frequency. |
| § 91.426 - Dilute emission sampling calculations. |
| § 91.427 - Catalyst thermal stress resistance evaluation. |
| Appendix A to Subpart E of Part 91 - Tables |
| Appendix B to Subpart E of Part 91 - Figures |