everytime i fill up my car, the pump always shuts off at just the right time to fill my tank. every tank is a different size, so how does the machine know?
In: 16
Take a look next time, you’ll notice a little tube with a hole at the end of the gas nozzle.
The tube sucks in air as the gas pumps which is easy as long as the there is air at the tip of the nozzle.
Once the fuel level in the tank rises high enough it will block the tube, preventing it from sucking in air, and a sensor notices this immediately and stops the flow of gas.
It’s super smart, super simple, and super easy.
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