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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).
On August 17, 2012, AutoZone expanded into their 49th state Alaska by opening their 5,000th store in Wasilla, Alaska. In 2012 AutoZone opened their first store in Brazil. [28] In December 2012, AutoZone purchased AutoAnything.com, an e-commerce leader in aftermarket automotive parts based in San Diego, California. [28] [29]
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]
When gas bubbles enter a pump head, the compression motion compresses the gas but has a hard time forcing it out of the pump head. The pump may stop pumping liquid with gas bubbles in the pump head even though mechanically the pump is going through the motions, repeatedly compressing and decompressing the bubbles.
In North America the fuel is known as "gasoline" or "gas" for short, and the terms "gas station" and "service station" are used in the United States, Canada, and the Caribbean. In some regions of Canada, the term "gas bar" (or "gasbar") is used. In the rest of the English-speaking world the fuel is known as "petrol".
Triplex pumps with shorter lifetimes are commonplace to the home user. A person who uses a home pressure washer for 10 hours a year may be satisfied with a pump that lasts 100 hours between rebuilds. Industrial-grade or continuous duty triplex pumps on the other end of the quality spectrum may run for as much as 2,080 hours a year. [17]
Suction is the vertical distance between the fluid to be pumped and the centre of the pump, while lift is the vertical distance between the pump and the delivery point. [4] The depth from which a hand pump will suck is limited by atmospheric pressure to an operating depth of less than 7 meters. [ 5 ]
Alternatively the siphon may be primed by a pump at either the intake or outlet. Gas in the liquid is a concern in large siphons. [30] The gas tends to accumulate at the crest and if enough accumulates to break the flow of liquid, the siphon stops working.