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  2. United States vehicle emission standards - Wikipedia

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

    California's Low-emission vehicle (LEV) program defines six automotive emission standards which are stricter than the United States' national Tier regulations. Each standard has several targets depending on vehicle weight and cargo capacity; the regulations cover vehicles with test weights up to 14,000 pounds (6,400 kg).

  3. Continuous emissions monitoring system - Wikipedia

    en.wikipedia.org/wiki/Continuous_emissions...

    Typical monitored emissions include: sulfur dioxide, nitrogen oxides, carbon monoxide, carbon dioxide, hydrogen chloride, airborne particulate matter, mercury, volatile organic compounds, and oxygen. CEM systems can also measure air flow, flue gas opacity and moisture. A monitoring system that measures particulate matter is referred to as a PEMS.

  4. Emission standard - Wikipedia

    en.wikipedia.org/wiki/Emission_standard

    In an effort to decrease emissions from heavy-duty diesel engines faster, CARB's Carl Moyer Program funds upgrades that are in advance of regulations. The California ARB standard for light vehicle emissions is a regulation of equipment first, with verification of emissions second.

  5. United States Environmental Protection Agency - Wikipedia

    en.wikipedia.org/wiki/United_States...

    In 2014, the EPA published its "Tier 3" standards for cars, trucks and other motor vehicles, which tightened air pollution emission requirements and lowered the sulfur content in gasoline. [ 80 ] In 2015, the EPA discovered extensive violations by Volkswagen Group in its manufacture of Volkswagen and Audi diesel engine cars, for the 2009 ...

  6. European emission standards - Wikipedia

    en.wikipedia.org/wiki/European_emission_standards

    Since 1 April 2018, Euro 4, Tier 2, and EPA 2007 are mandated in Peru. [83] Since 8 October 2018, all new petrol cars in Indonesia must comply with Euro 4. [84] Since 1 July 2019, all new heavy vehicles in Mexico must comply with EPA 07 and Euro 5. [85] Since 1 April 2020, all new 2, 3 or 4-wheelers in India must comply with BS VI (similar to ...

  7. 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 ...

  8. Category:EPA Tier 3-compliant locomotives of the United ...

    en.wikipedia.org/wiki/Category:EPA_Tier_3...

    The following is a list of diesel-electric locomotives that meet or exceed EPA Tier 3 locomotive emissions regulations. Subcategories This category has only the following subcategory.

  9. Non-road engine - Wikipedia

    en.wikipedia.org/wiki/Non-road_engine

    Japan introduced its own standards that are similar but not harmonized to the US Tier 3 and Europe Stage III A. Brazil adopted the resolution in 2011 to set emission standards that are equivalent to US Tier 3 and European Stage III A. [4] In Australia, the definition includes some stationary engines such as electric generators and pumps. [6]