EFI for Propane

[Raymond C Drouillard]

>>> I was thinking of feeding the liquid into the injecter at perhaps 330
>>> PSI, and using something similar to a diesel injecter on the other
end
>>> that opens at 300 PSI.  That way the injecter would see a 30 PSI
>>
>>it may be more then 300psi require to keep the propane liquid, and a
pump
>>would be needed to get the liquid to the warm end of the fuel system
>>
>>> difference in pressures, and be dealing with a warm liquid.  The
standard
>>> injecter would be used as a valve, and the propane would vaporize
once it
>>> leaves the injecter (regulater or whatever you want to call it).
>
>Trouble is, it will begin to vaporize (flash) on its way through the 
>injector.
>
>Greg

The idea of the above scheme is to keep it in a liquid state on BOTH
sides of the injecter.  The injecter would be used as a valve.  The
liquid propane would be fed into the injecter at 330 (or whatever) PSI,
and exit at 300 (or whatever), which would result in a 30 PSI pressure
drop.

The LIQUID propane would then be piped to something that is similar to a
diesel injecter.  It would esentially be a pressure relief valve (like
that thingie on a pressure cooker) that would let enough liquid propane
out to keep the pressure at 300 PSI.  When the injecter is shut off, the
propane remains in the line at 300 PSI.  When the engine is started
again, propane is fed to the EFI injecter at 330 PSI, and the injecter
meters it.  It is then vended to the inside of the manifold by the relief
valve.

The relief valve would have to stand up to the vaporizing propane, but
the injecter would only see warm liquid at a 30 PSI pressure difference. 
What needs to be found is an injecter that is sturdy enough to withstand
330 PSI without bursting.

Ray

___________________________________________________________________
You don't need to buy Internet access to use free Internet e-mail.
Get completely free e-mail from Juno at http://www.juno.com/getjuno.html
or call Juno at (800) 654-JUNO [654-5866]