Twin Centrifugals VS Single

[BamaInstrument]

If I understand correctly, the drive ratio would be controlled by
accelerator position.  If so, I believe, but am not sure that this approach
was patented many years ago, and was successfully put into practice.

dh



----- Original Message -----
From: "Eric Fahlgren" <efahl at adams.com>
To: <diy_efi at diy-efi.org>
Sent: Wednesday, April 18, 2001 7:11 AM
Subject: Re: Twin Centrifugals VS Single


> Walter Sherwin wrote:
>
> > Yes, unfortunately the response of a belt driven centrifugal unit is
> > proportional to the square of the impeller tip speed, together with a
few
> > other minor influences.  It would be ideal to either: 1) vary the belt
drive
> > ratio with respect to the crank speed [ala turbo's], or  2) oversize the
> > unit, within the impeller speed confines, and then dump the unwanted
> > manifold boost/flow via an intelligent dump valve controller [assuming a
> > blow-thru fuel configuration].
>
> My brother and I were just discussing this last week.  How about
> a hybrid of these two approaches?  Put a variable pulley on one
> end, with an tensioning idler to vary the ratio.  Use a controller
> to move the idler, deriving its control inputs from load, impeller
> RPM and boost.  The best of all worlds, low-end torque, high boost,
> high efficiency and a safety device.  Let me know when someone gets
> it running! :)
>
> --
> Eric Fahlgren                            Mechanical Dynamics, Inc
> efahl at adams.com                          Ann Arbor, Michigan, USA
> --------------------------------------------------------------------------
--
> To unsubscribe from diy_efi, send "unsubscribe diy_efi" (without the
quotes)
> in the body of a message (not the subject) to majordomo at lists.diy-efi.org
>

----------------------------------------------------------------------------
To unsubscribe from diy_efi, send "unsubscribe diy_efi" (without the quotes)
in the body of a message (not the subject) to majordomo at lists.diy-efi.org