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  2. United States vehicle emission standards - Wikipedia

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

    more than 2 model years old to 24 model years old; motorcycles, diesel-powered, and automobiles 25 model years or older exempt from emission testing – includes motor vehicles registered as an Antique or Classic under Texas law (either displaying state-mandated vanity license plate or vintage-era license plates (this also includes past general ...

  3. Emission standard - Wikipedia

    en.wikipedia.org/wiki/Emission_standard

    Special vehicles (based on a cargo truck or bus): 10 years; Diesel passenger cars: 9 years; Furthermore, the regulation allows fulfillment of its requirements to be postponed by an additional 0.5–2.5 years, depending on the age of the vehicle. This delay was introduced in part to harmonize the NO x and PM Law with the Tokyo diesel retrofit ...

  4. Not-To-Exceed - Wikipedia

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

    The NTE cap is set at 1.25 times the FTP emission limit as described in the subsection above. For 2005 model year heavy-duty engines, the NTE emission cap for NMHC plus NOx is 1.25 times 2.5 grams per brake horsepower-hour, or 3.125 grams per brake horsepower-hour. The basic NTE control area for diesel engines has three basic boundaries on the ...

  5. 2008 California Statewide Truck and Bus Rule - Wikipedia

    en.wikipedia.org/wiki/2008_California_Statewide...

    Two years later, in September 2000, the Air Resources Board adopted the Risk Reduction Plan to Reduce Particulate Matter Emissions from Diesel-Fueled Engines and Vehicles which committed to establish retrofit requirements for in-use diesel vehicles to reduce diesel particulate matter 75 percent by 2010 and 85 percent by 2020. [4]

  6. Diesel exhaust fluid - Wikipedia

    en.wikipedia.org/wiki/Diesel_exhaust_fluid

    For example, 2010 EPA emissions requirements require full DEF coolant flow within 70 minutes. [ 18 ] [ 19 ] In Europe, Regulation (EC) No 692/2008 [ 20 ] specified in Annex XVI point 10 that DEF from a frozen tank at a core temperature of −15 °C (5 °F) must become available within 20 minutes when starting the engine at −15 °C (5 °F).

  7. Vehicle emissions control - Wikipedia

    en.wikipedia.org/wiki/Vehicle_emissions_control

    1998: Diesel engine standards further increased in efforts to reduce ozone and PM emissions for various vehicles including industrial equipment. 1999: Tailpipe emission standards are finalized, sulfur contents in gasoline are reduced, and various boats/other marine vehicles using diesel had reduced emission limits for NOx and PM. [7]

  8. Diesel Emissions Reduction Act - Wikipedia

    en.wikipedia.org/wiki/Diesel_Emissions_Reduction_Act

    That bill was the Voinovich-Carper Diesel Emissions Reduction Act of 2010, which was the 3973 bill heard by the 111th Senate. S.3973 was first introduced to the Senate on November 18, 2010, but never made it past the Senate floor. Possibly because The Diesel Emissions Reduction Act of 2010 (H.R. 5809) was already making its way in the Senate.

  9. Volkswagen emissions scandal - Wikipedia

    en.wikipedia.org/wiki/Volkswagen_emissions_scandal

    Distribution of estimated actual excess Volkswagen light duty diesel vehicle NO x emissions summed over 2008 through 2015 (kg per km 2). [205] The median value of emissions is used for each year. Emission density peaks at 446 kg per km 2. [205] Annual excess Volkswagen light duty diesel vehicle NO x emissions in kilotonnes (million kg). Results ...