Gasoline grades

Gasoline grades
  The classification of gasoline by octane ratings. Each type of gasoline (conventional, oxygenated, and reformulated) is classified by three grades - Regular, Midgrade, and Premium. Note: Gasoline sales are reported by grade in accordance with their classification at the time of sale. In general, automotive octane requirements are lower at high altitudes. Therefore, in some areas of the United States, such as the Rocky Mountain States, the octane ratings for the gasoline grades may be 2 or more octane points lower.
  Regular gasoline: Gasoline having an antiknock index, i.e., octane rating, greater than or equal to 85 and less than 88. Note Octane requirements may vary by altitude.
  Midgrade gasoline: Gasoline having an antiknock index, i.e., octane rating, greater than or equal to 88 and less than or equal to 90. Note: Octane requirements may vary by altitude.
  Premium gasoline: Gasoline having an antiknock index, i.e., octane rating, greater than 90. Note: Octane requirements may vary by altitudes or fluids at various depths beneath the surface of the earth. The energy is extracted by drilling and/or pumping.
  U.S. Dept. of Energy, Energy Information Administration's Energy Glossary

Energy terms . 2014.

Игры ⚽ Поможем написать курсовую

Look at other dictionaries:

  • gasoline — 1. A refined petroleum naphtha which by its composition is suitable for fuel in a reciprocating type internal combustion engine. ASTM D 439 specifies three grades for various types of motor vehicle operations. Straight run gasoline is the product …   Petroleum refining glossary

  • Gasoline motor — (leaded)   Contains more than 0.05 grams of lead per gallon or more than 0.005 grams of phosphorus per gallon. The actual lead content of any given gallon may vary. Premium and regular grades are included, depending on the octane rating. Includes …   Energy terms

  • Unleaded midgrade gasoline —   See Gasoline grades.   U.S. Dept. of Energy, Energy Information Administration s Energy Glossary …   Energy terms

  • Unleaded premium gasoline —   See Gasoline grades.   U.S. Dept. of Energy, Energy Information Administration s Energy Glossary …   Energy terms

  • Unleaded regular gasoline —   See Gasoline grades.   U.S. Dept. of Energy, Energy Information Administration s Energy Glossary …   Energy terms

  • Miles per gallon of gasoline equivalent — (MPGe) is a unit of measurement that relates efficiencies of different systems to the traditional unit of measurement for fuel efficiency (miles per gallon of gasoline).DescriptionMPGe is based on the quantity of heat energy that can be obtained… …   Wikipedia

  • Regular grade gasoline —   A grade of unleaded gasoline with a lower octane rating (approximately 82) than other grades. Octane boosters are added to gasoline to control engine pre ignition or knocking by slowing combustion rates.   U.S. Dept. of Energy, Energy… …   Energy terms

  • Finished leaded gasoline —   Contains more than 0.05 gram of lead per gallon or more than 0.005 gram of phosphorus per gallon. Premium and regular grades are included, depending on the octane rating. Includes leaded gasohol. Blendstock is excluded until blending has been… …   Energy terms

  • Common ethanol fuel mixtures — Summary of the main ethanol blends used around the world There are several common ethanol fuel mixtures in use around the world. The use of pure hydrous or anhydrous ethanol in internal combustion engines (ICE) is only possible if the engine is… …   Wikipedia

  • Motor oil — For the TV documentary focused on the Edmonton Oilers of the National Hockey League, see Oil Change (TV Series). Motor oil sample Motor oil or engine oil is an oil used for lubrication of various internal combustion engines. The main function is… …   Wikipedia

Share the article and excerpts

Direct link
… Do a right-click on the link above
and select “Copy Link”