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From: "Marvin Kaye" <marv@lancaironline.net>
Subject: Re: [LML] Re: supershargers
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Date: Tue, 15 Mar 2005 13:26:10 -0500
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Posted for "George Braly" <gwbraly@gami.com>:

  Terrence,
  
  If you are not able to control the speed of the compressor wheel - - then 
you
have to figure out some other way to regulate the output pressure.
  
  All other ways besides speed control introduce substantial inefficiencies.
  
  The beauty of the exhaust gas turbine driven compressor wheel is that the 
use
of the pressure controlled feed back  waste gate control  to by-pass the
exhaust around the turbine wheel provides an automatic optimization of the
speed of the compressor to match it to the needs of the engine for manifold
pressure.
  
  It becomes a nice "closed loop" and automatic control system for the
compressor.
  
  Regards,  George

"""
  George,
  
  WHY does it need to be variable speed?
  
  Terrence O'Neill
  LNC2 IO-320 N211AL
  
  
>  The fundamental problem with  superchargers   whose speed is a multiple 
> of
> the speed of the crank shaft is - --  the speed is a fixed multiple of the
> crank shaft when it VERY VERY much needs to be a variable speed, not 
> fixed.
"""