What is the density of 92 gasoline?
2 Answers
The density of 92 gasoline is approximately 0.725g/ml. The density of gasoline is not a fixed value, as it slightly varies with seasons and climates due to thermal expansion and contraction. Gasoline: Gasoline (US)/Petrol (UK), appears transparent and flammable, with a distillation range of 30°C to 220°C. Its main components are C5~C12 aliphatic hydrocarbons and cycloalkanes, along with a certain amount of aromatic hydrocarbons. Gasoline is a colorless to light yellow, easily flowing liquid at room temperature, difficult to dissolve in water, flammable, with a distillation range of 30°C to 220°C. It explodes upon contact with fire when the air concentration is between 74g/m³ to 123g/m³. The calorific value of gasoline is about 44,000 kJ/kg (the calorific value of fuel refers to the heat produced by the complete combustion of 1kg of fuel). The physical and chemical properties are as follows: Chemical formula: A mixture of hydrocarbons from five to twelve carbons. Gasoline has a high octane number and good anti-knock combustion performance. Different gasoline components, such as straight-run gasoline components, catalytic cracking gasoline components, and catalytic reforming gasoline components obtained from petroleum refining, are refined and blended with high-octane components, mainly used as fuel for automotive ignition internal combustion engines. The GB17930—2013 automotive gasoline standard first specified the density index, which is 720kg/m³~775kg/m³ at 20°C, further ensuring the relative stability of vehicle fuel economy. Considering the reduction in octane number due to sulfur reduction and manganese prohibition in the fifth stage of automotive gasoline, and the shortage of high-octane resources in China, combined with the actual situation of the refining industry, the standard adjusted the gasoline grades from 90, 93, and 97 to 89, 92, and 95, and added 98-grade automotive gasoline. Physical and chemical properties of gasoline: Gasoline is a colorless to light yellow, easily flowing liquid at room temperature, difficult to dissolve in water, flammable, with a distillation range of 30°C to 205°C. It explodes upon contact with fire when the air concentration is between 74-123g/m³. The calorific value of gasoline is about 44,000 kJ/kg. Main uses of gasoline: Gasoline is one of the most widely used light petroleum products and an important fuel for engines. According to the manufacturing process, gasoline components can be divided into straight-run gasoline, thermal cracking gasoline (coking gasoline), catalytic cracking gasoline, catalytic reforming gasoline, polymerization gasoline, hydrocracking gasoline, alkylation gasoline, and synthetic gasoline. Precautions for refueling: When refueling: Turn off the vehicle, do not make phone calls or play with mobile phones, and do not use open flames in the gas station. Do not make phone calls or play with mobile phones in the gas station. When refueling, be sure to turn off the engine. If there are many people, queue up and pay attention not to cut in line, maintain order. When choosing gasoline: Always choose gas stations with better quality gasoline, and avoid those with poor quality gasoline. Long-term use of very poor quality gasoline will lead to increased carbon deposits in the engine. Not only should you choose gas stations with better quality gasoline, but also the correct gasoline grade. Choosing the right gasoline grade is very important. Generally, vehicles will have the manufacturer's recommended gasoline grade printed on the inside of the fuel filler cap. Follow the instructions to refuel. If the label states: Use 92 or higher grade gasoline, then both 92 and 95 gasoline can be used, but they should not be mixed. If the label states: Use no less than 95-grade gasoline, then only 95 or 98 gasoline can be used, and 92 gasoline should not be used. The gasoline grade is not the higher the better. The engine's compression ratio needs to match the gasoline grade. If a low-compression engine is filled with high-grade gasoline, although it can reduce engine knocking, it will change the engine ignition time, leading to increased carbon deposits in the cylinder, and long-term use will affect the engine's lifespan. If a high-compression engine is filled with low-grade gasoline, the engine is prone to knocking, accelerating the damage to engine components.
As a car enthusiast, I've driven many vehicles using 92-octane gasoline, with densities typically ranging from 0.72 to 0.78 grams per cubic centimeter, averaging around 0.74. This value is quite crucial. It affects fuel consumption calculations - for instance, in summer when temperatures rise, the fuel becomes thinner with slightly lower density. A full tank would weigh less, making it seem like fewer kilometers per liter, though the energy content remains similar. Performance tuners monitor density to adjust engine parameters for better output, though this makes little difference in regular cars. Safety-wise, low-density gasoline's higher volatility increases fire risks, requiring proper ventilation. I recommend focusing on octane ratings rather than density to avoid getting bogged down in minutiae - driving enjoyment matters most. This knowledge comes from accumulated experience; understanding it thoroughly can save money and reduce waste.
