[Fwd: [M] [M} IC Thermodynamics]- Part 3

[Barry E. King]

You should be injecting the water/alcohol just before the t/b well after the
turbine has compressed inlet air.

Why was water hitting the compressor wheel?  Do you mean the turbine (hot
side)?

I know people using this technique and it works great.  Indy cars of past
years didn't use any sort of air charge cooler BUT water injection.


Regards,

Barry

> -----Original Message-----
> From: owner-diy_efi at efi332.eng.ohio-state.edu
> [mailto:owner-diy_efi at efi332.eng.ohio-state.edu]On Behalf Of
> ECMnut at aol.com
> Sent: Tuesday, November 03, 1998 7:47 PM
> To: diy_efi at efi332.eng.ohio-state.edu
> Subject: Re: [Fwd: [M] [M} IC Thermodynamics]- Part 3
>
>
> In a message dated 11/3/98 9:37:53 PM Eastern Standard Time,
> twsharpe at mtco.com
> writes:
>
> > A more cost efficient use (cheap) is to cool the turbo with
> water/alcohol
> >  injection into the turbo inlet. The turbo really atomizes the liquid,
> >  causing it to evaporate rapidly, absorbing a lot of heat and
> volume, thus
> >  reducing boost, which the turbo promptly replaces. This is
> very efficient
> >  for street thrillers that don't need more than 10 seconds worth of WOT.
> >
> I went this route several year ago, and had problems with the
> alchohol/water
> mix having an "abrasive" effect on the compressor wheel.  I would
> not do it
> again.  BUT I have never seen pistons so sparking clean at teardown time,
> as with water injection.
> HTH
> Mike V.
>