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This is a Flash Animation of a 3 Lobe Roots Pump ( Blower ).


The Roots type supercharger or Roots blower is a positive displacement pump which operates by pulling air through a pair of meshing lobes not unlike a set of stretched gears. Air is trapped in pockets surrounding the lobes and carried from the intake side to the exhaust. The supercharger is driven directly from the engine's crankshaft via a belt or, in a two-stroke diesel engine, by spur gears.


It is named for the brothers Philander and Francis Marion Roots of Connersville, Indiana, who first patented the basic design in 1860 as an air pump for use in blast furnaces and other industrial applications. In 1900, Gottlieb Daimler included a Roots-style supercharger in a patented engine design, making the Roots-type supercharger the oldest of the various designs now available.



E SHYAM
04 Jan 2014

how it works

E SHYAM
04 Jan 2014

diesel engine

Jet Black
01 Apr 2014

how about including the twist in each lobe ie: GM 671 blowers originally had a 3 lobe 30 degree helix shape ??

rotor length & design are very important & should not be omitted


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