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A gasoline pump or fuel dispenser is a machine at a filling station that is used to pump gasoline (petrol), diesel, or other types of liquid fuel into vehicles. Gasoline pumps are also known as bowsers or petrol bowsers (in Australia and South Africa), [2] [3] petrol pumps (in Commonwealth countries), or gas pumps (in North America).
Sylvanus Freelove Bowser (August 8, 1854 – October 3, 1938) was an American inventor who is widely credited with inventing the automobile fuel pump. Bowser Avenue in his hometown of Fort Wayne, Indiana is named after him. [1] Bowser marketed his patented kerosene pump starting in 1885.
It is similar to that of a piston pump, but the high-pressure seal is stationary while the smooth cylindrical plunger slides through the seal. Plunger-type pumps are often mounted on the side of the injection pump and driven by the camshaft. [4] These pumps usually run at a fuel pressure of 3,600–26,100 psi (250–1,800 bar). [3]
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Liquid-ring pumps are typically used as vacuum pumps, but can also be used as gas compressors.The function of a liquid-ring pump is similar to a rotary vane pump, with the difference being that the vanes are a rigid part of the rotor and churn a rotating ring of liquid to form the compression-chamber seal.
Pre-payment is the norm in the US and customers may typically pay either at the pump or inside the gas station. Modern stations have pay-at-the-pump functions: in most cases credit, debit, ATM cards, fuel cards and fleet cards are accepted. Occasionally a station will have a pay-at-the-pump-only period per day, when attendants are not present ...
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If the pump casing becomes filled with vapors or gases, the pump impeller becomes gas-bound and incapable of pumping. [10] To ensure that a centrifugal pump remains primed and does not become gas-bound, most centrifugal pumps are located below the level of the source from which the pump is to take its suction.