Injecting Liquid LPG

mitsuko · Post by **mitsuko** » Wed May 18, 2005 6:31 am

I've send this fulton a mail , asking him for a quote .
Let's see what comes up .

Keihin's are real good equipement .

They are very low Z , so beware , the flyback board must be used or some p&h driver .

Pat

Mercmad · Post by **Mercmad** » Wed May 18, 2005 1:12 pm

Thanks Mike,the more info the merrier!,Hope you have a selection of Brown pants to wear when you get that triumph running!

Cheers ron B.

Pele · Post by **Pele** » Mon Sep 05, 2005 9:45 am

ronny wrote:I`ve been interested in liquid lpg injection for a couple of years, and I`ve been looking everywhere for info on it.
There isn`t much to find, as you already have found out. So I`ve been thinking alot on how it could be done, without spending a fortune.
What do you think about this idea?
If you use the old K-Jetronic fuel injectors, that has a opening pressure of 50psi. You use one K-Jet. injector, and one fast acting solenoid valve for each cylinder, with 10-15cm betveen the soleniod valve and the injector.
Then you put a pressure sensor on the "fuel rail" (just before the solenoid valves), to measure the lpg preasure from the bottle to the injectors.
The lpg is stored at around 10bar, and the K-Jet. injectors will hold back 3.4-3.5 bar of that pressure, so the solenoid valves must only hold max 7bar, and when they open, the K-Jet. injectors will be feed with a 10bars, and at that pressure the lpg would be in liquid..
Any thoughts about inject liquid lpg this way?
A`m I mway of or could it be done..?
Ronny

Would this work if one could find solenoid valves that held back the 15bar of LPG. After all, isn't that all an injector is, a solenoid valve with a nozzle at the end to vaporize liquid gasoline?

And because the gas is being injected as a liquid, is a spray pattern necessary at all? It should fully vaporize due to the heat in the intake manifold or even better, the combustion chamber.

Might not even need to find injectors, just weld hose nipples or fittings where port injectors should go on your intake manifold and hook up fast acting solenoids.

Bah. This'd be so much easier if someone would just market injectors that did what we wanted. Much less risk of me trying something dumb and killing someone. "Whoops" is an engineering term, and a common one at that.

Mercmad · Post by **Mercmad** » Mon Sep 05, 2005 2:05 pm

..."Might not even need to find injectors, just weld hose nipples or fittings where port injectors should go on your intake manifold and hook up fast acting solenoids."

AS I understand it,that is how the japanese Keihin injecotrs are mounted.The only problem i can forsee is one of space,regular 12 volt sloenoids twnd to be as twice as big as injectors.
And what about the cost of fuel!!!

It reminds of 1974 when we had petrol rationing so I used the mixer off a forklift on my chevy and carried a 25 liter bbq bottle in the back seat

I hope that LP gas doesn't become popular in China like gasoline.
http://www.qtww.com/pdf/031117_injector ... 72_dpi.pdf[/u]

miked · Post by **miked** » Wed Oct 26, 2005 8:41 pm

bumping this to see if anybody has any "new news"

with the price of gas/petrol these days pursuing LPG injection solutions moves to the top of my to do list

Mercmad · Post by **Mercmad** » Wed Oct 26, 2005 10:34 pm

Hi,still there then?,No new news but the UK government is going to place some xtra excise on LPgas because it has become popular,it makes me think the government (or those in it ) have some vested interest in Fuel companies and with demand dropping off ,so has their excessive profit grabbing.There is less money comming now so they have shoved LPgas prices up world wide.
I live in Australia ,every summer the price goes up because the "demand" in the northern Hemisphere has gone up fopr heating.
Strange that our gas is tottally Homemade!!! and our country exports more than it uses!!.
I have a mate at PPC magazines who is just starting a LPG injection project.A Mercedes 280SE (1969) with Turbo.....

maddog577 · Post by **maddog577** » Mon Nov 14, 2005 9:35 am

\\\\\\why cannot one use Nitrious injection solinoids

Mercmad · Post by **Mercmad** » Mon Nov 14, 2005 12:11 pm

Hi Maddog,In case you've never had a chancce to compare the two,(Nitrous solenoids and gas injection solenoids) I 'll just point out that the Nitrous solenoid is a fairly basic if not primitive bit of gear.You can find the same part ANYWHERE gas or liquid needs to be controlled.Have a look in any large 'fridge plant some time or older gas hot water system.The point is,a sloenoid for nitrous is designed to click on or off once or twice a minute.A Fuel injection valve is designed to click on or off several thousand times per minute.
As you are in the UK,Have you or do you read "practical Perfpomance Car"
Magazine.?.In one the later issues they have a very article on the subject of gas injection and discusses the romano gas injector.This is a very good mag with some great input ,well worth looking into.
Cheers!.

Phillblanchard · Post by **Phillblanchard** » Tue Nov 22, 2005 11:10 am

ah, ill put this into a new post! sorry

Phill.

miked · Post by **miked** » Tue Nov 22, 2005 12:04 pm

so I'm still confused -- has there been a source located for LPG injectors?

MicroSquirt.com read only forum (Jan.15,2018)

Injecting Liquid LPG

thats OK Mike!

liquid LPG injection

Nitrous solenoids