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Two Top Fuel dragsters side by side during an NHRA event in 2012. Top Fuel is a type of drag racing whose dragsters are the quickest accelerating racing cars in the world and the fastest sanctioned category of drag racing, with the fastest competitors reaching speeds of 341.68 miles per hour (549.9 km/h) and finishing the 1,000 foot (304.8 m) runs in 3.61 seconds.
Top Fuel (class designation: AA/D top fuel dragster) and Fuel Funny Car (class designation: AA/FC top fuel coupe) have recently been limited to a 1,000-foot (300 m) track, instead of the historic 1/4 mile [1,320 feet (402 m)], as a means to limit top speeds and increase safety (there had been a number of engine explosions at or near 300 mph ...
Common problems include: excessive flow from the high-pressure rim back to the low-pressure inlet along the gap between the casing of the pump and the rotor, excessive recirculation of the fluid at inlet, excessive vortexing of the fluid as it leaves the casing of the pump, damaging cavitation to impeller blade surfaces in low-pressure zones.
On engines that use a carburetor (e.g. in older cars, lawnmowers and power tools), a mechanical fuel pump is typically used in order to transfer fuel from the fuel tank into the carburetor. These fuel pumps operate at a relatively low fuel pressure of 10–15 psi (0.7–1.0 bar).
The dry-sump system requires at least two pumps - one pressure and one scavenge - and sometimes as many as four or five scavenge pumps are used to minimize the amount of oil in the engine. The pressure pump and scavenge pumps are frequently mounted on a common crankshaft, so that a single pulley at the front of the system can run as many pumps ...
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Pumps - Pumps are another very popular turbomachine. Although there are very many different types of pumps, they all do the same thing. Pumps are used to move fluids around using some sort of mechanical power, from electric motors to full size diesel engines. Pumps have thousands of uses, and are the true basis to turbomachinery (Škorpík, 2017).
The total pressure may have gravitational, static pressure and kinetic energy components; i.e. energy is distributed between change in the fluid's gravitational potential energy (going up or down hill), change in velocity, or change in static pressure. η is the pump efficiency, and may be given by the manufacturer's information, such as in the ...