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The Roots Blower Company was an American engineering company based in Connersville, Indiana. It was founded in 1854 by the inventors Philander Higley Roots and Francis Marion Roots. It is notable for the Roots blower, a type of pump. [1]
An Eaton M62 Roots-type supercharger is visible at the front of this Ecotec LSJ engine in a 2006 Saturn Ion Red Line.. The Roots-type blower is simple and widely used. It can be more effective than alternative superchargers at developing positive intake manifold pressure (i.e., above atmospheric pressure) at low engine speeds, making it a popular choice for passenger automobile applications.
The term "blower" is applied to rotary screw, roots-type, and centrifugal compressors when utilized as part of an automotive forced induction system. The term 'cabin blower' is also used for the pressurisation of aircraft for high altitude flight, which used Roots type compressors particularly in the 1950s (see Marshall supercharger).
The Roots supercharger dates back to the 1860s, and this is the basis for the original Wade supercharger, but with patented modifications incorporated. The first patent of Costin and Densham deals with ways to achieve compression within the Roots-style blower. [2]
In the 1960s Godfrey continued to make the Roots-type cabin air compressors (a development of the original Marshall), but also a screw-type compressor. Surplus stores of these cabin superchargers (Marshall cabin blowers) were repurposed after the war and used for tuning cars (mainly for racing, hill-climbing, etc.).
In the case of the Roots blower, the GMC rating pattern is typical. The GMC rating is based on how many two-stroke cylinders - and the size of those cylinders - that it is designed to scavenge, with GMC's model range including 2–71, 3–71, 4–71 and 6–71 blowers. The 6–71 blower, for example, is designed to scavenge six cylinders of 71 ...
General Electric chief executive officer Jeff Immelt, speaking at the Detroit Economic Club, told listeners in the hard-hit city that it was time for America to rebuild its manufacturing base.
An early example of a lobe pump is the Roots Blower, patented in 1860 [1] to blow combustion air to melt iron in blast furnaces, but now more commonly used as an engine supercharger. Lobe pumps are used in a variety of industries including pulp and paper, chemical, food, beverage, pharmaceutical, and biotechnology. They are popular in these ...
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