Quote:
Originally Posted by 455HOGT37
Not to be pedantic, but doesn't a "turbo" have to be driven by a "turbine" (exhaust gas driven)? The device being discussed here is an electric supercharger.
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No problem at all. Need to help you with a few terms.
All belt driven, crank driven, or exhaust driven boosting devices fit in the 'family" of Superchargers.
Almost all Centrifugal Superchargers (belt or crank driven) use Turbocharger design Compressor Wheels. The Compressor Wheels performance is in many cases documented on a Compressor "MAP". The map has pressure ratio on the left side and typically Lbs/min mass flow on the bottom of the map.
There are a few Belt Driven Compressor Supercharger manufacturers out there. ATI (procharger), Paxton, Vortech, Powerdyne, and recently Torqstorm.
Until the last few years, most of them used Turbocharger Compressor Wheel designs adapted to their compressor housings.
Virtually all of the electric Supercharger wheels come from the Turbocharger compressor wheel industry, either as a actual part or as a compressor design.
Turbochargers have two flow paths: The cold side (Compressor side) and the Hot side (Turbine side). Compressor maps are generated, like I said, on the Cold side wheel. Again many times with a Turbocharger wheel used and a Turbocharger map for documentation. Compressor wheel does not care if a belt, a turbine wheel driven by the exhaust, or a electric motor driven by 12 volts or 48 volts spins the compressor wheel.
All of the Electric Supercharger guys (Borg Warner, Garrett, etc) who could supply electric Superchargers in large volumes are also Turbocharger manufacturers.
So now you have the real story. Because you have no background on the electric units, easy to get confused on the words.
Tom V.
All of our research testing over the years showed that the 12 volt electric superchargers were marginal for making any real pressure ratio (boost). The 48 volt units had no issues with making the design pressure ratios, and several times the quoted 5 psi from a previous post..