Math Question

John Napoli jgn at li.net
Sat Sep 21 01:34:31 GMT 1996


You have just described the evolution from the normally aspirated I/C
engine to one that is turbocharged to one that has a turbine assist for
more than just increasing the pressure of the charge (ie, adds mechanical
work too) to the turbine engine.  It happened a while ago in aviation.  :)

John

On Thu, 19 Sep 1996, Jim Butler wrote:

> 
> >From:  John Napoli[SMTP:jgn at li.net]
> >Sent:  Tuesday, September 17, 1996 11:15 PM
> >To:  diy_efi at coulomb.eng.ohio-state.edu
> >Subject:  Re: Math Question
> >
> >
> > If we were able to utilize a third of the waste heat, wouldn't that make a
> > big difference?  Instead of raising CAFE with smaller and lighter cars, we
> > would raise it by being more efficient.  I doubt that all the EFI software
> > in the world will make much more MPG than we see right now.  I would like
> > to see something intelligent about using the waste heat.
> 
> 
> 	In a relatively old textbook that I have on heat engines (40's or 50's
> era) there's a discussion of the idea of following an IC with a gas-turbine.
>  The context wasn't like that of a turbocharger, but rather with the turbine
> shaft connected though a mechanical drive to the driveshaft, hence combining
> the output of the two for useful work.
> 
> 	FWIW,
> 
> 	Jim
> 
> --
> Jim Butler (butler at comm.mot.com)
> 




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