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Please note: This summary is provided to help you understand the regulations. Consult the references provided for links to the full text of the regulations.

Transportation Modes » Water » Engine Emissions

TERC contains information on the following topics related to engine emissions:

Alternative Fuels Summary Full Text
Diesel Fuel Requirements (Marine) Summary Full Text
Engine Emissions (Auxiliary Marine Engines in Port) Summary Full Text
Engine Emissions (Marine Engines) Summary Full Text
Freight Density - Impact and Cost Summary Full Text
Greenhouse Gas Comparisons Summary Full Text
LNG Tank Venting Summary Full Text
Alternative Fuels
Applies to:

All vehicles; future standards may specifically affect vehicles powered by alternative fuels.
Requires:

Current standards set minimum fuel efficiency and maximum emissions standards for gasoline and diesel vehicles.
See also:
  • Alternative Fuels - State Regulations
  • Biodiesel
  • Engine Emissions (Truck, Tailpipe)
  • Fuel Efficiency
  • Greenhouse Gas Emissions
    		•
    Diesel Fuel Requirements (Marine)
    Applies to: All vessels registered in any of over 150 countries (including the U.S.) that are signatories to the MARPOL agreement.
    Requires: Sulfur content of fuel must be below a specified maximum. Special rules apply when operating in designated geographical areas.
    See also:
  • Alternative Fuels
  • Clean Air Act
  • Engine Emissions (Marine Engines)
  • National Clean Diesel Campaign (exit TERC)
    		•
    Engine Emissions (Auxiliary Marine Engines in Port)
    Applies to: Vessels visiting California ports
    Requires: Vessels must turn off auxiliary power generators and switch to land-based power while in port
    See also:
  • Clean Air Act
  • Engine Emissions (Marine Engines)
    		•
    Engine Emissions (Marine Engines)
    Applies to: The standards apply most directly to engine manufacturers. However, vessel owners and operators are required to keep emission controls operating as specified, and are responsible for ensuring that engines continue to meet standards if remanufactured.
    Requires: Emissions of soot particles and nitrogen oxides from newly manufactured engines must fall within established limits. The limits depend on engine type, size, and model year.
    See also:
  • Clean Air Act
  • Greenhouse Gas Emissions
  • Engine Emissions (Auxiliary Marine Engines in Port)
  • Engine Emissions (Non-road and Auxiliary Equipment)
  • National Clean Diesel Campaign (exit TERC)
    • Freight Density - Impact and Cost
    Applies to: Allocating carbon dioxide emissions and fuel costs of transportation based on density
    Requires:

    Not currently a regulatory requirement. This allocation method is mathematically required for consistent impact calculation and reporting.
    See also:
  • Freight density, carbon footprint, and fuel cost (PDF)
  • TERC Bulk Buster - Cost and emissions calculator for cargo, by density (spreadsheet)
    • Greenhouse Gas Comparisons
    Back to Top
    Applies to: Any vehicle
    Requires: Calculators based on emission factors provide a useful but limited way to compare the greenhouse gas emissions of transportation modes
    See also:
  • Best Speed for Fuel Economy
  • Greenhouse Gas Emissions
    		•
    Greenhouse Gas Emissions from Marine Engines
    Back to Top
    Applies to: coming soon
    Requires: coming soon
    See also:
  • coming soon
    		•
    LNG Tank Venting
    Back to Top
    Applies to: All liquefied natural gas (LNG) fuel tanks
    Requires: Both fuel level and internal tank temperature must be known to calculate how long an LNG tank can avoid venting fuel to the atmosphere.
    See also:
  • Alternative Fuels
  • Greenhouse Gas Emissions
    		•

     
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