Quote:
Originally Posted by Shiny
We all understand it's differential pressure that moves fluid.
The only other way to create differential pressure between tank and pump is to pressurize the tank.
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Hmm, seems that you, and JSchmitz, are missing that the tank IS pressurized by the atmospheric pressure, AND less than atmospheris pressure (a void where the fuel is pushed to by the 14,7 psi atmospheric pressure) is created by the fill side of the fuel pump when the membran moves down?
Everything on Earth is pressurized by the atmospheric pressure, so to move fuel from a tank to a carb you need to create a vacuum (void) for the fuel to enter in the fuel pump. On the other side of the fuel pump membran fuel is positively pushed to the carb.
Think again, it ís simpler to understand and explain the priciples of the combustion engine using the correct terms.
FWIW