e/Scroll-type supercharger

Information
has gloss	eng: The scroll-type supercharger is a positive displacement orbiting-spiral supercharger. It is a compromise between the more rugged rotating lobe, and the more efficient sliding vane type superchargers, and is considered to offer the highest potential in regard to efficiency, noise and pressure fluctuation.
lexicalization	eng: scroll-type supercharger
instance of	(noun) compressor that forces increased oxygen into the cylinders of an internal-combustion engine supercharger

Media
media:img	Two moving spirals scroll pump.gif