Turbo vs Super. was variable comp...variable disp....

[Espen Hilde]

A sentrifugal compressor is more efficent than a roots type blower.Roots
maybe
50%effectivity v. sentrifugal up to 80 %(less heating of intake air
temp.and
less energy used,to compress)Many sentrifugal superchargers uses compressor
wheel and housing from turbo chargers.(a turbine is on exhaust side)
Espen

----------
> From: Jim Davies <jimd at vcc.bc.ca>
> To: diy_efi at efi332.eng.ohio-state.edu
> Subject: Re: Turbo vs Super. was variable comp...variable disp....
> Date: 23. februar 1998 04:25
> 
> 
> 
> On Sun, 22 Feb 1998, Clare Snyder wrote:
> 
> > 
> > I BELIEVE HE WAS REFERRING TO THE CENTRIFUGAL SUPERCHARGER, in
> 
> > shaft driven instead of exhaust turbine driven. Works good for low
boost
> > (altitude compensation, for example).  It does not provide a "positive
> > boost" like a positive displacement unit.
> 
> FWIW, many of these "low boost" systems put out 18 to 50 PSI and were
> capable of more with wide-open throttle.
> 
> Jim Davies
>