DIY_EFI Digest Tuesday, 2 March 1999 Volume 04 : Number 140 In this issue: Re: EFI for Propane See the end of the digest for information on subscribing to the DIY_EFI or DIY_EFI-Digest mailing lists. ---------------------------------------------------------------------- From: Raymond C Drouillard Date: Mon, 1 Mar 1999 00:29:32 -0500 Subject: Re: EFI for Propane >>> 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] ------------------------------ End of DIY_EFI Digest V4 #140 ***************************** To subscribe to DIY_EFI-Digest, send the command: subscribe diy_efi-digest in the body of a message to "Majordomo@xxx. A non-digest (direct mail) version of this list is also available; to subscribe to that instead, replace "diy_efi-digest" in the command above with "diy_efi".