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The gas/oil ratio (GOR) is the ratio of the volume of gas ("scf") that comes out of solution to the volume of oil — at standard conditions. In reservoir simulation gas/oil ratio is usually abbreviated . A point to check is whether the volume of oil is measured before or after the gas comes out of solution, since the remaining oil volume will ...
Air–fuel equivalence ratio (λ) Air–fuel equivalence ratio, λ (lambda), is the ratio of actual AFR to stoichiometry for a given mixture. λ = 1.0 is at stoichiometry, rich mixtures λ < 1.0, and lean mixtures λ > 1.0. There is a direct relationship between λ and AFR. To calculate AFR from a given λ, multiply the measured λ by the ...
The compression ratio (calculated purely from the geometry of the mechanical parts) of a typical gasoline (petrol) is 10:1 (premium fuel) or 9:1 (regular fuel), with some engines reaching a ratio of 12:1 or more. The greater the expansion ratio, the more efficient the engine, in principle, and higher compression / expansion -ratio conventional ...
For energy per unit mass, see Specific energy. In physics, energy density is the amount of energy stored in a given system or region of space per unit volume. It is sometimes confused with energy per unit mass which is properly called specific energy or gravimetric energy density . Often only the useful or extractable energy is measured, which ...
No. 1 fuel oil No. 1 distillate No. 1 diesel fuel Kerosene: Jet fuel: Distillate 9-16 No. 2 fuel oil No. 2 distillate No. 2 diesel fuel: Road diesel Rail diesel Marine gas oil Distillate 10-20 No. 3 fuel oil No. 3 distillate No. 3 diesel fuel Marine diesel oil Distillate No. 4 fuel oil No. 4 distillate No. 4 residual fuel oil Bunker A
Diesel fuel is commonly used in oil and gas extracting equipment, although some locales use electric or natural gas powered equipment. Tractors and heavy equipment were often multifuel in the 1920s through 1940s, running either spark-ignition and low-compression engines, akryod engines, or diesel engines.
Octane rating. An octane rating, or octane number, is a standard measure of a fuel 's ability to withstand compression in an internal combustion engine without undergoing pre-ignition. The higher the octane number, the more compression the fuel can withstand before detonating. Octane rating does not relate directly to the power output or the ...
In North America, gas stations offer two types of diesel fuel – according to ASTM D975 these are named No. 1 and No. 2 fuel. No. 1 fuel (similar to kerosene) has a natural CFPP of -40 °C but it is more expensive than No. 2 fuel. Adding No. 1 fuel will lower the CFPP of No. 2 fuel – adding 10% will lower the CFPP temperature by about 5 degrees.