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  2. Biodiesel standard - Wikipedia

    en.wikipedia.org/wiki/Biodiesel_standard

    On the other hand, biomass-based diesel fuels that meet ASTM standards could be used in much higher concentrations than biodiesel, which is usually limited to 20% biodiesel blends for standard diesel vehicles. Considering those comments, the FTC decided to set separate labeling requirements for biodiesel blends and biomass-based diesel fuel blends.

  3. Cetane number - Wikipedia

    en.wikipedia.org/wiki/Cetane_number

    In Europe, diesel cetane numbers were set at a minimum of 38 in 1994 and 40 in 2000. The standard for diesel sold in European Union, Iceland, Norway and Switzerland is defined by standard EN 590. Since 1 January 2001 EN 590 demands a minimum cetane index of 46 and a minimum cetane number of 51. Premium diesel fuel can have a cetane number as ...

  4. Conradson carbon residue - Wikipedia

    en.wikipedia.org/wiki/Conradson_Carbon_Residue

    For burner fuel, Concarbon provides an approximation of the tendency of the fuel to form deposits in vaporizing pot-type and sleeve-type burners. [ 4 ] For diesel fuel , Concarbon correlates approximately with combustion chamber deposits, provided that alkyl nitrates are absent, or if present, that the test is performed on the base fuel without ...

  5. Diesel fuel - Wikipedia

    en.wikipedia.org/wiki/Diesel_fuel

    Due to the higher density, diesel fuel offers a higher volumetric energy density: the density of EN 590 diesel fuel is defined as 0.820 to 0.845 kg/L (6.84 to 7.05 lb/US gal) at 15 °C (59 °F), about 9.0-13.9% more than EN 228 gasoline (petrol)'s 0.720–0.775 kg/L (6.01–6.47 lb/US gal) at 15 °C, which should be put into consideration when ...

  6. United States vehicle emission standards - Wikipedia

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

    The PZEV and AT-PZEV ratings are for vehicles which achieve a SULEV II rating and also have systems to eliminate evaporative emissions from the fuel system and which have 150,000-mile/15-year warranties on emission-control components. Several ordinary gasoline vehicles from the 2001 and later model years qualify as PZEVs.

  7. Cuba runs short on fuel at pump as energy crisis festers - AOL

    www.aol.com/news/cuba-runs-short-fuel-pump...

    Officials have previously blamed fuel shortages on the decades-old U.S. trade embargo, which complicates Cuba's financial transactions, making it more difficult for the government to purchase fuel ...