What is the difference between 98 and 95?
1 Answers
Compared with 95 gasoline, 98 gasoline has greater technical difficulty, higher processing costs, and a higher selling price. The following is extended information about gasoline characteristics: 1. Volatility: Refers to the ease with which gasoline evaporates in the carburetor. The volatility of gasoline is comprehensively evaluated by three indicators: distillation range, vapor pressure, and gas-liquid ratio: (1) Distillation range. Refers to the temperature range of gasoline fractions from the initial boiling point to the final boiling point; (2) Vapor pressure. It is an indicator that reflects the tendency of gasoline to cause vapor lock in the fuel system and the difficulty of starting the engine; (3) Gas-liquid ratio. Refers to the ratio of vapor volume to liquid volume in a standard instrument under specified temperature and atmospheric pressure. 2. Anti-knock performance: Refers to the ability of gasoline to resist knocking combustion under various operating conditions. The anti-knock performance of automotive gasoline is expressed by the octane number. The higher the octane number, the better the anti-knock performance. The octane number of gasoline is measured by an octane engine, and the grade of gasoline is classified according to the octane number. 3. Stability: Refers to the stability of gasoline when stored for a long time under natural conditions. It is characterized by gum content, induction period, and iodine value.