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Experiments and Studies
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Definition
Octane rating or octane number indicates the resistance to knock of a motor fuel being compressed. Higher octane numbers indicate that more compression the fuel can withstand before detonating (knocking). Gasolines with a higher octane number are suitable for high-compression engines that in most cases have also a better performance.
The specific energy content of a fuel is the heat energy derived when a quantity of it is burned (for example: a kilogram, etc.) and the heat is captured in a calorimeter and measured.
Background Information
- Octane ratings explained [View Resource]
- Octane Number And Engine Performance [View Resource]
- Properties of Fuels Table [View Resource]
- Gasoline & Octane Ratings [View Resource]
- Fuel energy content & unit conversions [View Resource]
- Alternative Fuels Comparison Chart [View Resource]
- Energy Content of Fuels in Joules [View Resource]
- Tony's Guide to Fuel saving [View Resource]
- Octane Calculator [View Resource]
- Consumer guide gasoline octane facts and myths [View Resource]
- Biomass [View Experiment]
K-12 Experiments, Labs, Lesson Plans and Science Fair Projects
- Which common gasoline alternative fuel is the most efficient in cost and caloric content including wood, vegetable oil, animal fats, and natural gas? [View Experiment]
- Which has More Heat Energy: Vegetable Oil or Petroleum Oil? [View Experiment]
- What Type of Fuel Has the Greatest Energy per Unit Mass? [View Experiment]
- Energy content of fuels experiment [View Experiment]
- Compare the heat of combustion of two different fuels - paraffin wax and methanol. [View Experiment]
- The Energy Content of Fuels: A Physical Science Activity [View Experiment]
- Lab: The Energy Content of Fuels [View Experiment]
- Experiment 10 - Comparison of the Energy Content of Fuels [View Experiment]
- Energy content of fuels Experiments [View Experiment]
College Experiments, Labs, Studies and Articles
- Effects of Pressure and Other Variables on Determinations of Octane Number [View Experiment]
- Experiment: Analysis of Gasoline Components by Gas Chromotography [View Experiment]
- Effects of oxygenated species on reforming gasoline range hydrocarbons [View Experiment]
- Experimental Study of Exhaust Emissions & Performance Analysis of Multi Cylinder S.I.Engine When Methanol Used as an Additive [View Experiment]
Theses and Dissertations
- Method for determination of octane rating by flame quenching experiments [View Thesis]
- Improvement of Gasoline Octane Number by Blending Gasoline with Selective Components [View Thesis]
- Understanding and Modeling of HCCI Engines [View Thesis]
Patents
- Unleaded aviation gasoline (US Patent 6238446, 2001) [View Patent]
- Fuels for internal combustion engines (US Patent 6858048, 2005) [View Patent]
- Production of motor fuels (US Patent 2921013, 1955) [View Patent]
See Also
- Energy Density of Fuels [View Experiment]
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Volumetric energy density of some fuels compared with gasoline
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| Fuel type |
MJ/litre |
MJ/kg |
BTU/Imp gal |
BTU/US gal |
Research octane
number (RON) |
| Regular Gasoline |
34.8 |
44.4 |
150,100 |
125,000 |
Min 91 |
| Premium Gasoline |
|
|
|
|
Min 95 |
| Autogas (LPG) (60% Propane + 40% Butane) |
26.8 |
34.4 |
114,570 |
95,475 |
110 |
| Ethanol |
23.5 |
31.1 |
101,600 |
84,600 |
129 |
| Methanol |
17.9 |
19.9 |
77,600 |
64,600 |
123 |
| Butanol |
29.2 |
|
|
|
91-99 |
| Gasohol (10% ethanol + 90% gasoline) |
33.7 |
43.54 |
145,200 |
120,900 |
93/94 |
| Diesel |
38.6 |
45.4 |
166,600 |
138,700 |
25 |
| Aviation gasoline (high octane gasoline, not Jet fuel) |
33.5 |
46.8 |
144,400 |
120,200 |
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| Jet fuel (kerosene based) |
35.1 |
43.8 |
151,242 |
125,935 |
15-25 |
| Liquefied natural gas |
25.3 |
~55 |
109,000 |
90,800 |
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| Kerosene |
38.3 |
43.1 |
160,800 |
134,000 |
15-25 |
Source: Wikipedia (All text is available under the terms of the GNU Free Documentation License and Creative Commons Attribution-ShareAlike License.)
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