The Physics
Factbook
An encyclopedia of scientific essays

# Energy Density of Gasoline

Bibliographic Entry Result
(w/surrounding text)
Standardized
Result
Zittel, Werner & Reinhold Wurster (Ludwig-Blkow-Systemtechnik). Hydrogen in the Energy Sector. Chapter 2: Physical Properties. HyWeb.
 Energy Carrier Form of Storage Energy density by weight (kWh/kg) Energy Density by volume (kWh/l) Gasoline Liquid 12.7 8.76
45.7 MJ/kg
Caldirola, Manuela. Physics of High Energy Densities. Amsterdam: Academic Press, 1961.
 Battery Type Energy Density (W-hr/kg) Energy Density (J/kg) Gasoline (not a battery!) (for comparison) 13, 200 47,500,000
47.5 MJ/kg
Thomas, George. Overview of Storage Development DOE Hydrogen Program [pdf]. Livermore, CA. Sandia National Laboratories. 2000.
 Fuel Hydrogen Weight Fraction Ambient State Mass Energy Density (MJ/kg) Gasoline .16 Liquid 44.4
44.4 MJ/kg
Nommensen, Arthur. List of common conversion factors (Engineering conversion factors). IOR Energy.
 Liquid Fuel MJ/litre litre/Tonne GJ/Tonne Gasoline, automotive 34.2 1360 36.4 Gasoline, aviation 33.0 1412 49.6
36.4-49.6 MJ/kg
Harrison, Reid R. Low Power Circuit Design, Lecture 1: Why is Low Power Circuit Design Important?[pdf]. Spring 2001.
 Gasoline 4.4 × 107 J/kg 12,000 Wh/kg = 1.3 × 108 J/gallon
44 MJ/kg

Energy density is the amount of energy stored in a given system or region of space per unit volume or mass. It therefore has units of energy per length cubed or energy per mass. Gasoline has an energy density of about 45 megajoules per kilogram (MJ/kg).

Gasoline is a mixture of the lighter liquid hydrocarbons used chiefly as a fuel for internal-combustion engines. It is produced by the incomplete refinement of petroleum; by condensation or adsorption from natural gas; by thermal or catalytic decomposition of petroleum or its fractions; by the hydrogenation of producer gas or coal; or by the polymerization of hydrocarbons of lower molecular weight.

Gasoline is one of the most important fuels used in the transportation industry. Most gasoline is used in engines that move automobiles and light trucks. Gasoline engines also power other vehicles and machines, including airplanes (aviation), motorboats, tractors, and lawn mowers.

Arthur Golnik -- 2003