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Code of Federal Regulations (Last Updated: July 5, 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 90 - Control of Emissions from Nonroad Spark-Ignition Engines at or Below 19 Kilowatts |
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Subpart E - Gaseous Exhaust Test Procedures |
Appendix A to Subpart E of Part 90 - Tables
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Appendix A to Subpart E of Part 90 - 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 Cycles for Class I-A, I-B, and Class I-V Engines
Mode Speed 1 2 3 4 5 6 7 8 9 10 11 Rated Speed Intermediate Speed Idle Mode Points - A Cycle 1 2 3 4 5 6 Load Percent - A Cycle 100 75 50 25 10 0 Weighting 9% 20% 29% 30% 7% 5% Mode Points - B Cycle 1 2 3 4 5 6 Load Percent - B Cycle 100 75 50 25 10 0 Weighting 9% 20% 29% 30% 7% 5% Mode Points - C Cycle 1 2 Load Percent - C Cycle 100 0 Weighting for Phase 1 Engines 90% 10% Weighting for Phase 2 Engines 85% 15% [60 FR 34598, July 3, 1995, as amended at 65 FR 24313, Apr. 25, 2000]