Is it normal for gas to spray out when opening the fuel tank cap?
1 Answers
It is normal for gas to spray out when opening the fuel tank cap because gasoline is a highly volatile liquid. When gasoline is exposed to high temperatures, it evaporates into gas. Vehicles are generally equipped with a carbon canister system that can absorb the gas produced by the evaporation of gasoline in the fuel tank. After the engine starts, the gas produced by the evaporation of gasoline in the carbon canister enters the intake manifold, allowing the gas to enter the combustion chamber and participate in combustion. Without a carbon canister, the fuel tank could explode. To prevent the fuel tank from exploding, if the fuel tank cap were designed to be non-sealed, the gas produced by gasoline evaporation would immediately be released into the atmosphere, polluting the environment and creating unsafe conditions. Drivers should be careful not to overfill the tank when refueling in hot weather. It is advisable to choose large gas stations that offer high-quality gasoline with good octane ratings. Different grades of gasoline have different octane values; the higher the grade, the higher the octane value. Gasoline with higher octane values has better anti-knock performance. Most turbocharged engines generally require at least 95-octane gasoline to avoid engine knocking. Knocking can lead to increased fuel consumption and reduced engine power, and severe knocking can even cause engine piston explosions or connecting rod deformation.
