LPG Injection.

[Greg Hermann]

At 2:56 AM 12/25/01, The Punisher wrote:
>very interesting. Anybody try a constant flow type injector?? of course this
>would end up being similar to the servo controlled K-Jetronic I was thinking
>about earlier this year(still want to try it if I get time). A high speed
>servoconnected to a small barrel valve feeding a fuel block, that the
>constant flow injectors are connected to.
>Unfortunatly this setup may be prone to inject gas instead of liquid at low
>flow rates.

If you _know_ what you are doing with "piping" design for two phase (liquid
and gas) situations, this would not be a problem at all. BUT--it takes
proper pipe layout to avoid such problems.

A reference book on industrial refrigeration piping design would be a good
place to look for information on how to do such things properly. In
fact--propane and butane are rather common (and _very_ good) refrigerants,
and commonly used in applications where their flammability is a non-factor
(refineries).

Greg
>
>
>>From: Chris McKinnon <chrism at cnx.net>
>>Reply-To: diy_efi at diy-efi.org
>>To: diy_efi at diy-efi.org
>>Subject: RE: LPG Injection.
>>Date: Mon, 24 Dec 2001 03:40:06 -0700 (MST)
>>
>>I've heard that they self-destruct due to the lack of lubrication provided
>>by LPG, plus the fact that the fuel rail pressure will need to be at least
>>300 PSI. I'm looking for a couple of cheap injectors to try though. No luck
>>yet unfortunately :(
>>
>>As for valve seats, for LPG hardened valve seats are a MUST. I've been told
>>LPG is very hard on old, non hardened, valve seats for leaded gas.
>>
>>
>>Chris
>>
>> >Sorry I came in late on this one, but what happens if you try to use a
>> >'conventional' electronic fuel injector with LPG ?
>> >
>> >I know LPG has some things going for it. I had this 76 dodge pickup with
>>a
>> >440 that was on propane since almost new (had 140 gallons total
>>capacity!)
>> >fuel system always worked good (emco on holley baseplate) only trouble it
>> >had was the chrysler ignition system(installed GM HEI module and cured
>>it).
>> >At about 350,000 miles or so it suddenly wouldnt hardly run so I tore the
>> >engine down. The interior was quite clean and had VERY little sludge,
>> >bearings looked good, and the cylinders had almost no ridge and good
>>looking
>> >bores.
>> >
>> >The problem was that the valve seats finaly CRUMBLED. Some were totaly
>>GONE
>> >and most were spider-webbed and falling apart. When the valves were
>>removed
>> >most of the seats were removed by hand.
>> >I've seen valve seats fail in gas engines(petrol for some) but nothing
>>like
>> >this, it was downright STRANGE. Ever seen this??
>> >
>> >Marvin Fugate (always looking for more power)
>> >
>> >
>>
>>----- End of forwarded message from owner-diy_efi at diy-efi.org -----
>>----------------------------------------------------------------------------
>>To unsubscribe from diy_efi, send "unsubscribe diy_efi" (without the
>>quotes)
>>in the body of a message (not the subject) to majordomo at lists.diy-efi.org
>>
>
>
>_________________________________________________________________
>MSN Photos is the easiest way to share and print your photos:
>http://photos.msn.com/support/worldwide.aspx
>
>----- End of forwarded message from owner-diy_efi at diy-efi.org -----
>----------------------------------------------------------------------------
>To unsubscribe from diy_efi, send "unsubscribe diy_efi" (without the quotes)
>in the body of a message (not the subject) to majordomo at lists.diy-efi.org


----- End of forwarded message from owner-diy_efi at diy-efi.org -----
----------------------------------------------------------------------------
To unsubscribe from diy_efi, send "unsubscribe diy_efi" (without the quotes)
in the body of a message (not the subject) to majordomo at lists.diy-efi.org