[Diy_efi] Seen one, want LOTS more !!

[Grant Beaty]

Sorry for double post, saw the book here:

http://www.amazon.com/exec/obidos/tg/stores/offering/list/-/0879386576/all/r
ef=dp_bb_a/103-3670362-3807068

Grant

----- Original Message -----
From: "Grant Beaty" <gbeaty at ufl.edu>
To: "List for general do-it-yourself EFI talk" <diy_efi at diy-efi.org>
Sent: Friday, January 10, 2003 3:11 AM
Subject: Re: [Diy_efi] Seen one, want LOTS more !!


> Crap, I thought you had all the answers ;) I've always wondered about
> turbine maps, you can find some charts in Garrett's new catalog,
> http://www.turbobygarrett.com/turbobygarrett/jsp/index.jsp I'm not sure
how
> to read them, but I'm guessing Oolan's links will help.
>
> I've also heard "Turbocharging the Internal Combustion Engine", also out
of
> print, has great info.
>
> Grant
>
> ----- Original Message -----
> From: "Greg Hermann" <bearbvd at mindspring.com>
> To: <diy_efi at diy-efi.org>
> Sent: Thursday, January 09, 2003 7:17 PM
> Subject: [Diy_efi] Seen one, want LOTS more !!
>
>
> > Santa wife, who is a librarian the rest of the year, managed to get me a
> > copy of the (out of print) Humphries book "Automotive Supercharging and
> > Turbocharging Systems" (Motorbooks)
> >
> > GREAT book, best one I've ever come across on the subject, including
> > McInnes and Bell.
> >
> > Long story short, on page 112 (bottom left) is a TURBINE MAP, credited
to
> > Garrett and said to be for a TO-25 turbine. Essentially, it consists of
> two
> > graphs -- one is Turbine Pressure Ratio vs. Turbine Efficiency, the
other
> > is Turbine Pressure Ratio vs. Corrected Turbine Mass Flow (in
lbs./min.).
> > In this particular case, because the TO-25 has an integral waste gate,
> > there are five lines on each of the two graphs--each line for different
> > waste gate positions between 0.0" (closed) and 0.4" (wide open).
> >
> > The main point is that THIS DATA EXISTS--- SOMEWHERE-- and quite likely
> > exists for every possible pairing of turbine wheel trim and exhaust
> housing
> > (each A/R housing and configuration--on center, tangential, or split--
> > should have a different curve, for each and every Garrett turbo !! In
the
> > case of turbos without integral wastegates, there would only be one line
> on
> > each graph, BUT THAT'S ALL THAT WOULD BE NEEDED !
> >
> > My POINT is that THESE turbine curves are ALL of the rest (besides the
> > compressor maps) of the info needed (only other number needed is pre
> > turbine EGT !!) to do a full quantitative turbo match to an engine,
rather
> > than doing it "by guess and by golly" !!
> >
> > SO--does _ANYBODY_ know where to find copies of the rest of these
turbine
> > maps for Garrett (or any other mfgrs.) ???
> >
> > Thanks,
> >
> > Greg
> >
> >
> >
> >
> > _______________________________________________
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> > Diy_efi at diy-efi.org
> > http://www.diy-efi.org/mailman/listinfo/diy_efi
>
>
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