The amount of energy from different types of fuel depends on the stoichiometric ratio, the chemically correct air and fuel ratio to ensure complete combustion of fuel, and its Specific energy, the energy per unit mass.
Reference 1: Specific energy (MJ/kg) and Energy @ λ=1 (MJ/kg(Air)).
Reference 2: Diesel, Ethanol, Gasoline, Hydrogen, Kerosene, LPG, Methanol and Nitromethane.
Source: http://en.wikipedia.org/wiki/Fuel
Reference 2: Diesel, Ethanol, Gasoline, Hydrogen, Kerosene, LPG, Methanol and Nitromethane.
Source: http://en.wikipedia.org/wiki/Fuel
