Must the Engine Be Turned Off When Refueling?

[Alves]

It is mandatory to turn off the engine when refueling a car. Below is a detailed explanation of the reasons why the engine must be turned off during refueling: 1. Gasoline is an electrolyte: Choosing to refuel while the car is still running may cause leakage in some operational car instruments, leading to short circuits or circuit failures. 2. Gasoline concentration in the air: When the vehicle is running without being turned off, the instruments inside generate a significant amount of heat, accelerating the volatilization of gasoline. Refueling while the engine is still on increases the concentration of gasoline vapor around the fuel tank. 3. Exhaust pipe emissions: During operation, the car's exhaust pipe continues to emit exhaust gases. On one hand, the exhaust pipe can reach very high temperatures, and on the other hand, the exhaust may carry sparks, which can easily pose safety hazards.