![]() |
Code of Federal Regulations (Last Updated: July 5, 2024) |
![]() |
Title 40 - Protection of Environment |
![]() |
Chapter I - Environmental Protection Agency |
![]() |
SubChapter C - Air Programs |
![]() |
Part 91 - Control of Emissions from Marine Spark-Ignition Engines |
![]() |
Subpart E - Gaseous Exhaust Test Procedures |
Appendix A to Subpart E of Part 91 - Tables
Latest version.
-
Appendix A to Subpart E of Part 91 - Tables
Table 1 - Parameters To Be Measured or Calculated and Recorded
Parameter Units Airflow rate (dry), if applicable g/h Fuel flow rate g/h Engine speed rpm Engine torque output N · m Power output kW Air inlet temperature °C Air humidity mg/kg Coolant temperature (liquid cooled) °C Exhaust mixing chamber surface temperature, if applicable °C Exhaust sample line temperature, if applicable °C Total accumulated hours of engine operation h Barometric pressure kPa Table 2 - Test Cycle and Weighting Factors for Marine Engines>
Mode No. Engine speed as a percentage of engine rated speed Engine torque as a percentage of maximum torque at rated speed Mode weighting factor 1 100 100 0.06 2 80 71.6 0.14 3 60 46.5 0.15 4 40 25 0.25 5 idle 0 0.40