1. RON ( Research Octane Number ) defines the octane level of the fuel. 2. One of the best known is the research octane number ( RON ). 3. Because benzene has a high octane number , it is an important component of gasoline. 4. The engine design of a vehicle is the determining element of the octane number requirement. 5. Gasoline is graded by octane number , which rates its resistance to premature ignition, or engine knocking. 6. Where the octane number is raised by blending in ethanol, energy content per volume is reduced. 7. Isobutane is primarily used by refineries to enhance ( increase ) the octane number of motor gasoline. 8. Alkylation processes transform low molecular-weight alkenes and iso-paraffin molecules into larger iso-paraffins with a high octane number . 9. The Motor Octane Number , or MON, is assigned to the knock resistance during part-throttle and high-speed applications. 10. The octane number is an empirical measure of the resistance of gasoline to combusting prematurely, known as knocking.
