[Diy_efi] Water metanol turbo assist

[Jeff Mars]

The SAE published a book by Graham White on WW2 Allied Aircraft piston
engines.  In it he talks a bit about oil filtration,  they sure were not
using spin on cartridge filters.
Some applications used engine driven centrifugal filter.  Their filtering
requirements included dealing with Aviation gas injected into the oil
(lowers viscosity) before engine down so it would be easier to start up in
the cold.  ADI (water/methonol injection) was only for perfomance
enhanement, to lift an over loaded bomber or help you out run someone who
was shooting at you. 

> -----Original Message-----
> From:	arnie [SMTP:arnie_ at charter.net]
> Sent:	Sunday, January 05, 2003 10:28 AM
> To:	diy_efi at diy-efi.org
> Subject:	Re: [Diy_efi] Water metanol turbo assist 
> 
> > This is true.  I somehow doubt that very much of the water used
> > in water injection at even 70% of fuel volume gets into the oil pan,
> > especially (if it) is properly atomized in the intake.
> 
> When 30% of the oil pan contents (by weight) is water, that 'red flag'
> had better be waivin'.  Adam, I agree the ring material, honing
> techniques,
> the oil composition itself, and thus, sealing efficiency of today is
> superior
> to the WW2 era, so it is likely that quantity of water found in the pan
> will
> be less.  However, I fail to see how the actual amount of cylinder wall
> washing (or the ability of the water to 'scrub' the walls) will change
> much,
> given the superior oil of today.
> 
> It strikes me odd, (actually I find it somewhat amusing) that with the
> amount of emphasis placed on documenting the performance merits
> of WI observed in the testing, in that (NACA) report, there was a
> conspicuous lack of attention/concern  given to the water dilution in
> the oil.  It would appear to me, that objectives had been set, and the
> 'correct' conclusions were to be achieved, come hell or high water.  :)
> 
> Btw, Adam ?, ah, actually I don't subscribe to the 'kinder gentler'
> America theme.   :)   :D
> 
> GAS
> 
> ----- Original Message -----
> From: "Adam Wade" <espresso_doppio at yahoo.com>
> To: <diy_efi at diy-efi.org>
> Sent: Sunday, January 05, 2003 3:50 AM
> Subject: Re: [Diy_efi] Water metanol turbo assist
> 
> 
> > --- arnie <arnie_ at charter.net> wrote:
> >
> > > with an unacceptable amount of water finding it's
> > > way to the pan, relatively speaking, it is STILL a
> > > HELL of a lot of water.  :)
> >
> > This is true.  I somehow doubt that very much of the
> > water used in water injection at even 70% of fuel
> > volume gets into the oil pan, especially is properly
> > atomized in the intake.
> >
> > I'd be interested to see the differences in moisture
> > content between two identical engines, one running
> > water injection and one not, in the same spot, run
> > under the same loading, yadda yadda.  I have hunches
> > about what I'd find, but not well-backed enough to
> > voice them.  ;)
> >
> > Anyone have anything like that?  I'd presume the
> > results would be improved over those of WWII aircraft,
> > if only because of the better atomization and tighter
> > tolerances in modern injectors and engines, respectively.
> >
> > Adam Wade
> 
> 
> 
> 
> _______________________________________________
> Diy_efi mailing list
> Diy_efi at diy-efi.org
> http://www.diy-efi.org/mailman/listinfo/diy_efi


_______________________________________________
Diy_efi mailing list
Diy_efi at diy-efi.org
http://www.diy-efi.org/mailman/listinfo/diy_efi