Injecting Liquid LPG

[Mercmad]

Try here for Kiehin injectors;
http://www.prins-lpg.com/en/products/vs ... rrail.html
or here to see an example of ROMANO injectors;
http://www.autogasworldwide.co.uk/catal ... ction.html

[miked]

Try here for Kiehin injectors;
http://www.prins-lpg.com/en/products/vs ... rrail.html

so how do you buy them? pricing? couldn't find any info at all on that site

[roundman_fabrications]

so how do you buy them? pricing

Looks like the real deal. I'd be interested in getting some info on those Kiehin injectors as well.

Off subject a bit..
I've been thinking about an experiment (not a practical idea for a regular driver), but just to see if it works....
Propane is at 55 PSI when it's temperature is at 32 degrees F.
Ice the fuel tank.
Boost the pressure a bit with a fuel pump capable of say, 75 PSI, Circulate the fuel through an insulated rail, using standard gasoline type injectors, and regulate to 55 to 60 PSI with a bypass boost referenced fuel regulator (for turbo application).

Crazy?

[Mercmad]

Brian ,it's not a crazy idea ,there was a study done by a universtity in the last couple of years,(in the US) which used a liquid pump mounted on ther LP cylinder.It pumped the liquid to the injectors ,which were injecting liquid into the intake .The resulting horsepower was vastly better than using evaporated LP gas.I have lost the link but if I can find it .i'll post it here because there was lots of detail on how they modded the engine ( Mopar i think ) and how they sourced parts etc.
Cooling the tank won't acheive much,in fact propane and Butane are brilliant refridgerants any way.But using liquid is the way to acheive real horsepower especially as LPG is 114 Octane.
Re pricing their injectors,just give them a phone call or email both are on the addresses i posted.
Heres a posat to a company n Australia who are building just such a system..
.
http://www.lpgli.com/propane.html

[roundman_fabrications]

Yeah, I was just going to cool the LP to get it at a temperature and pressure where a standard fuel injector could handle it.
It's counter-productive though. One thing I've learned in studying this, ideally, you want to direct a stream of liquid LP right at the intake valve so as to get as much liquid LP into the combustion chamber as possible.
It's the phase change of the LP within the combustion chamber that makes the thermal efficiencies so high. The bad thing about the standard fuel injectors is that they atomize the fuel, and you don't want that with liquid LP.
Looks like these Kiehin units may be the way to go.

[Rik]

Any news on availability of the injectors ?
Rik

[Mercmad]

General Motors in Australia ,has on it's Holden Commodore included gaseous LP Gas systems as an option.I haven't been working on my set up fpr some time ( lack of time basically) but a search of Oz websites would turn up a parts supplier in Australia who supply the holden injectors.
http://www.greencarcongress.com/lpg/index.html