EMFAC2017 Model and Documentation

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EMFAC2017 Interim Off-Model Adjustment Factors for the Heavy-Duty Inspection and Maintenance Program
EMFAC2017 (U.S. EPA Approved)
EMFAC2017 Updates

Updates from v1.0.2 to v1.0.3

  • Fixed a bug in custom activity (SG) mode related to multi-year speed profiles entries
  • Fixed a bug related to methane (CH4) speciation for gasoline vehicles

Updates from v1.0.1 to v1.0.2

UpdatesImpacts
ModeVehicleModel YearCalendar YearPollutant
Update to MY2022—2024 CO2 emission ratesAllLDV2022—20242022—2050CO2, Fuel
Update to UBUS VMTAllUBUSAllAllVMT
      
EMFAC2017 Adjustment Factors