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  2. United States vehicle emission standards - Wikipedia

    en.wikipedia.org/wiki/United_States_vehicle...

    Tier 1–3 Standards were adopted in 1994 and was phased in between 1996 and 2000 for engines over 37 kW (50 hp). In 1998 the regulation included engines under 37 kW and introduced more stringent Tier 2 and Tier 3 standards which was scheduled to be phased in between 2000 and 2008.

  3. Emission standard - Wikipedia

    en.wikipedia.org/wiki/Emission_standard

    From 1 January 2006, all new passenger cars with spark-ignition engines in Hong Kong must meet either Euro IV petrol standard, Japanese Heisei 17 standard or US EPA Tier 2 Bin 5 standard. For new passenger cars with compression-ignition engines, they must meet US EPA Tier 2 Bin 5 standard.

  4. MPI HSP46 - Wikipedia

    en.wikipedia.org/wiki/MPI_HSP46

    The MPI HSP46 is a four-axle AC-traction diesel-electric locomotive for commuter trains, designed and assembled by MotivePower.It meets EPA Tier 3 emissions standards. The launch customer is the Massachusetts Bay Transportation Authority (MBTA), whose first unit entered revenue service in April 2014.

  5. Not-To-Exceed - Wikipedia

    en.wikipedia.org/wiki/Not-To-Exceed

    On June 3, 2003, the parties finalized a settlement of their disputes pertaining to the NTE standards. The parties agreed upon a detailed outline for a future regulation that would require a manufacturer-run heavy-duty in-use NTE testing ("HDIUT") program for diesel-fueled engines and vehicles. One section of the outline stated:

  6. Top Tier Detergent Gasoline - Wikipedia

    en.wikipedia.org/wiki/Top_Tier_Detergent_Gasoline

    Top Tier fuels must maintain levels of detergent additives that are believed to result in a higher standard of engine cleanliness and performance as compared to the United States Environmental Protection Agency (EPA) requirement. In addition, Top Tier fuels may not contain metallic additives, which can harm the vehicle emission system and ...

  7. Hydrogen fuel enhancement - Wikipedia

    en.wikipedia.org/wiki/Hydrogen_fuel_enhancement

    Arvin Meritor, a Tier 1 supplier of automotive technology, at one time, was experimenting with a plasma reformer technology which would use hydrogen produced from the fuel to enhance engine combustion efficiency and reduce emissions of NO x. [26] This reference states that a 20% to 30% increase in engine thermal efficiency is possible. However ...

  8. Brookville Equipment - Wikipedia

    en.wikipedia.org/wiki/Brookville_Equipment

    In 2007, BEC unveiled its CoGeneration [clarification needed] locomotives with up to 2,100 horsepower (1,600 kW), generated through the use of three low-emission diesel engines. The use of three clean-burning EPA Tier-3 engines offers a "Power on Demand" feature where engines come on-line as power needs are realized. This feature reduces ...

  9. Bombardier ALP-45DP - Wikipedia

    en.wikipedia.org/wiki/Bombardier_ALP-45DP

    The diesel engines meet Tier 3 EPA emission standards, and work is being done to enable an upgrade to Tier 4 standards, which took effect on January 1, 2015. [56] Total length is 21.8 m (72 ft), approximately 2 m (6 ft 7 in) longer than the ALP-46A. [24]