Should you turn off the engine when refueling at a gas station? Why should you turn off the engine when refueling at a gas station?

We all know that oil is flammable and explosive. We also know that open flames are prohibited at gas stations, and you cannot answer the phone. Another thing to note is that it is best to turn off the engine when refueling. Let's learn more about it.

Should you turn off the engine when refueling at a gas station?

You don't need to turn off the engine when refueling at a gas station. You don't have to get out of the car, but you must turn off the engine.

If the vehicle is not turned off, the engine is still running at high speed even though the vehicle body is not moving. The engine must be accompanied by current when it is running. If there is a short circuit or leakage, it is very dangerous.

If you do not turn off the engine and keep it running, the car's exhaust port will not stop emitting exhaust gas, and it will often carry sparks, posing a threat to the safety of the gas station. Therefore, it is strictly forbidden to use the fuel gun to collide with the car's exhaust port when refueling at a gas station.

A vehicle that has not been turned off will also generate a lot of heat, which will further accelerate the volatilization of the oil. The concentration of the oil-gas mixture around the fuel tank will also increase accordingly. Since the density of the mixture is greater than the density of air, it is not easy to diffuse. When the density reaches one Chengdu, it is very likely to be ignited and exploded.

Why do cars shut down at gas stations?

The main reason for turning off the car when refueling is for safety reasons to prevent explosion or fire.

An electric pump is installed in the fuel tank of a gasoline car to supply fuel to the engine. Part of the oil drawn by the electric pump returns to the fuel tank during operation. This process will cause the pressure inside the fuel tank to increase.

Another reason is that sometimes when we open the gas tank cap, there will be a puff of oily gas. When refueling with the pump working, the oil may spray out when the tank is filled. In addition, a lot of foam will be produced when refueling. In this case, the foam will sneak out of the tank, and the concentration of the oil and gas mixture around the tank will increase greatly. Once a small amount of sparks is generated in and around the car, it will cause combustion or even explosion.

The same is true when refueling a diesel car, but many diesel cars do not have electric pumps, so the oil will also flow out shallowly when refueling, so for safety reasons, the engine must be turned off when refueling.

Nowadays, gas stations have very good safety measures. The accident rate of refueling without turning off the engine is extremely low. The gas pump not only can automatically jump out of the gun, but also has an oil and gas recovery device to prevent oil and gas volatilization.

Things to note when refueling at a gas station

First: Don’t play with your phone while refueling your car.

Second: Do not smoke while refueling your car.

Third: Do not use a lighter when refueling your car.