PWM an electromagnetic (A/C) clutch?

[Bob Wooten]

I would think it to be much simpler to have two proms, one for fun & one for
the kid @ the Valet.

BW

-----Original Message-----
From: owner-diy_efi at diy-efi.org [mailto:owner-diy_efi at diy-efi.org]On
Behalf Of Daniel Houlton
Sent: Tuesday, December 18, 2001 10:25 AM
To: EFI
Subject: PWM an electromagnetic (A/C) clutch?


Any thoughts on how an A/C type clutch would like being
PWM'd?

I've been thinking about the clutch used on the supercharged
MR2.  It's similar to an A/C clutch.  I've got an Eaton M90
installation just about completed and was toying with the
idea of using an electric clutch on the pulley to limit boost
and/or have a 'valet' mode.

In theory, you could PWM the clutch to limit SC rotor speed
to get any boost level you want up to max boost.  Not sure
how it would work in reality though.  Seems the clutch
would maybe over-heat, or just wear out as they're not
really designed for modulation.

Any thoughts?


thanks
--Dan
houlster at inficad.com

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