How do electric fuel pumps and mechanical fuel pumps work?

How do electric fuel pumps work?
An electric fuel pump is a device that uses an electric motor to push gasoline or diesel fuel from a storage tank to the engine. The fuel pump is usually located inside the fuel tank or very close to the tank and is connected to the fuel tank by a fuel line.

The electric fuel pump is turned on and off by the engine's computer. When the engine is started, the computer sends a signal to the fuel pump to turn on. The pump creates a vacuum in the fuel line, which causes the fuel to be drawn into the pump. The pump then pushes the fuel into the engine. When the engine is stopped, the computer sends a signal to the fuel pump to turn off.

How do mechanical fuel pumps work?
Mechanical fuel pumps work by using a piston to push the fuel from the tank to the engine. The pump is connected to the engine with a belt, and when the engine is running, the pump turns and supplies fuel to the engine. There are two types of mechanical fuel pumps- positive displacement and centrifugal. Positive displacement pumps are more common and work by squeezing the fuel through a small opening. Centrifugal pumps use centrifugal force to draw the fuel in, and they are usually used in high-pressure applications.