TPI Questions

[Robert Harris]

Once upon a time Popular Mechanics or Popular Science
or do it your self whatever had plans for a You too can build it steam engine
based on an air conditioning compressor.  Had this strange vision of picking up
heat from intercooling, water, oil, whatever and converting it to work powering
this engine - either coupled to the crank or 
driving accessories.  Freon seemed like a nice working  fluid back then.  Never
got around to building one and now have no clue where to get the plans. If the
working fluid could "boil" might still be worth investigating and a "steam
engine" would make a damn decent cooling system.

And BTW I'm jealous.  When I was pushing H2O a year ago I got my ass fried.  I
now wear asbestos pampers whenever I post.  But now for the real number 2 in
the fan, look at a GM 350 diesel - the one based on a gasoline block.  Pick
whole car up for peanuts.  Insane thought.
Drill head for snapover valve. Time pump so that injection snaps over at about
20 degrees after TDC on power stroke. Combustion's over - but massive heat. 
Make bo koo steam rat now.  Peak gasoline pressure about 600 PSI at about 2000
degrees.  Steam at 444 makes same 600 psi.  Use all that heat about to be lost
out the exhaust to drive the piston down as an open cycle steam engine. Use the
diesel throttle regulator to control the amount of water injected.  Mix
machinist water soluble cutting oil with water and should have enuff
lubrication and anticorrosion to have reasonable pump life.  This would make
Terry proud.  Direct Cylinder Injection - only we use water to make the extra
power.

Of course I could just be puffing donuts from my - but then I have been know to
do that too.

"When some one gets something for nothing -
             some one else gets nothing for something "

If the first ingredient ain't Habanero, then the rest don't matter.
Robert Harris <bob at bobthecomputerguy.com>


----------
> From: Bill Bradley <senator at ugcs.caltech.edu>
> To: diy_efi at coulomb.eng.ohio-state.edu
> Subject: Re: TPI Questions
> Date: Friday, August 22, 1997 1:01 PM
> 
> > > Bear in mind that water or water/methanol injection will exert a powerful
> > > cooling effect on the mixture rather than merely diluting the mixture
> > > with hot, inert, gasses.
> > > Bill in Boulder   "Engineering as an Art Form"
> > 
> > Hey, that's my idea. :-) Unfortunately you have to alter the air intake
> > to compensate for the fuel displacement if water is injected, and
> > methanol has a lower available btu, not to mention air/fuel ratio
> > compared to gas.
> 
> 	Nope.  The water or methanol replaces AIR, not fuel.  The mixture
> goes rich running water or water-alcohol injection. Unless you're still
> running closed loop with the Oxygen sensor which will try to bring it
> back to stoic.  
> 
> > it to drive a cooling unit, (like a propane fridge principle), to cool
> > the air, and then jam as much air directly into the injector stream as
> > possible. The rest of the air charge requirement is sucked up normally
> > on the intake.
> 
> 	I've considered the idea of a heat powered heat pump as a killer
> intercooler design.  The drawbacks are that there are two common designs,
> one uses Hydrogen gas and Ammonia (not that namby-pamby 2.5% stuff that you
> use to clean things, REAL concentrated toxic, corrosive ammonia).  The other
> system uses water and lithium bromide salt, much nicer, but has the annoying
> habit of freezing when it gets cold...  Both systems also dump more heat OUT
> than you put in, so you have to have a decent cooling system for it as well.
> 
> 	Bill
>