Paul,

    Are most turbo compounding units axial flow or are there centrifugal
    flow units as well?

    Thanks,

    Bruce Smith


   Both have been used but the F1 guys are using centrifugal
    flow. Basically just turbo charger turbines  with generator on the shaft.
   Not the most efficient way of doing it.

   The best is a gear box that reduces the high rpm to e-shaft speeds.

   I have one from a DD15 with gear box from 40,000 RPM to 8,000 RPM.
   Suitable for a 3 rotor that I will sell for $2,000. It is axial flow.

   Paul Lamar

Paul, did you ever put any effort towards the Blow Down Turbine?

Steve Carlisle


If you mean running it on a dyno the answer is no. I did not have the $650
a day to do that. About that time I got an invitation to make a presentation
at the World Motor Sport Symposium in Oxford England. This is a gathering
of the world's top Formula One engine designers. The video is on the web site.

http://www.rotaryeng.net/Oxford-640-4802.mpeg


As a result of this electrical hybrid turbo compound was adopted by the
Formula One governing body as mandatory. Not the most efficient way to do
it but if the race car is either full throttle or full braking that is a lot
of energy to be recovered.

Paul Lamar


   The Rotary Engine free News Letter. Powered by Linux. If you want off
   the list PLEASE let me know and I will remove  you.  ACRE NL web
   site. http://www.rotaryeng.net You Tube http://tinyurl.com/beqqxas
   Copyright 1998-2017 All world wide rights reserved.