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(1) Octane number is of main quality indexes for gasoline.

(2) A model for calculating the blending octane number based on the main components, such as MTBE, reformate, FCC naphtha, alkylate and straight-run gasoline, is presented.

(3) The higher the octane number, the greater the resistance to preignition making a higher compression ratio possible.

(4) Determines the Pump Octane Number (AKI), Research Octane Number (RON), and Motor Octane Number (MON) of unleaded gasolines, and optional Cetane Index and Cetane Number for diesel fuels.

(5) It explains the theory that higher octane number gasoline is demanded with engine's compression ratio increasing.

(6) The higher the octane number, the greater the antiknocking function of the engine.

(7) Aim To synthesize new type of octane number improver for gasoline, methoxyisobutyrate.

(8) The changes of induction period and octane number of gasoline with manganese antiknock additive after exposure were investigated.

(9) A new type online analyzer of gasoline octane number based on NIR Spectrogram was introduced.

(10) The effective octane number of the material in the blend is known as the blending octane number.

(11) Some properties of petroleum products such as gasoline octane number are necessary to be analyzed regularly.

(12) The octane number may be improved about 1.8-31 units by above mentioned processing, the stability is also improved, and the vapour pressure is decreased.

(13) Diisopropyl ether has higher octane number, higher amount of oxygen and lower Reid pressure, so it is likely to become an ideal substitute of the methyl tert-butyl ether.

(14) Meanwhile, coke yield increase and octane number loss should be considered when reducing olefins through hydrogen transfer reactions.

(15) The Octane Number is retained owing to HZSM 5 ? ? s excellent ability of aromatization, isomerization and alkylation.

(16) Therefore[Sentencedict.com ], the octane number can be obtained by measuring the dielectric constant with the capacitive sensor.

(17) Fuel type Unleaded premium, minimum octane rating 98 (RON), automatic knock control permits operation with minimum octane number 95 (RON).

(18) The propylene content in feedstock, when less than 2%, has little effect on the octane number of the alkylate.

(19) The determination method rating units is the only reliable method to measuring octane number of gasoline.

(20) Hydrodesulphurization technology could effectively decrease sulfur content in gasoline and octane number loss.

(21) Application of ZSM-5 zeolites in oil refining was reviewed, including diesel hydrotreating, lub oil dewaxing, gasoline octane number enhancing and FCC gasoline olefin-reducing.

(22) The test results show that, with the increase of the octane number, the ignition timing delayed, the combustion rate decreased, and the cylinder pressure decreased.

(23) The catalyst can reduce the content of sulfur in gasoline fraction without obvious decrease in its octane number and liquid yield.

(24) Well-tried function of DMC as an additive on gasoline, covering its octane number, oxygen content, calorific value, vapor pressure, distillation range, freezing point, solubility in water etc.

(25) The development of blended ingredient of gasoline of high octane number is outlined.

(26) The promotor is featured by convenience in adding into FCC plants, higher stability and attrition resistance, and better octane number and induction period of the gasoline produced.

(27) In conclusion, the influence of the control parameters to the ignition delay is increased with the increase of the octane number and the decrease of the cetane number of the fuel.

(28) Light paraffin isomerization is an important method for processing and utilizing of natural gas liquid, it plays an important role in improving the octane number of light gasoline fractions.

(29) Variations of the reformed C 5 yield and the product octane number with reaction conditions were analyzed.