SAGEM LPG INJECTION HOW TO
SAGEM LPG INJECTION PROFESSIONAL

Most run in the 2.5-5 bar range, with a few going a little higher (maybe 7 bar, but that's iffy.) I don't want to say that there aren't any out there that can do 20 bar, because there may well be. That's well above the normal operating range any traditional top, side, or bottom feed, liquid fuel port injector. RE: supercharged 392 hemi liquid propane injection dgallup (Automotive) 13 Jul 07 11:21

SAGEM LPG INJECTION HOW TO

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SAGEM LPG INJECTION PROFESSIONAL

As for the injectors, they will have to hold the pressure you identify and retain an effective response at low engine speeds, something that is VERY difficult to do.įor what its worth, I have found that top feed injectors do not perform as well as bottom feed injectors at these pressures.Įng-tips, by professional engineers for professional engineers Liquid injection is without a doubt the next generation of propane fuel systems but there are a few teething problems. What this means is you will not be able to refuel your vehicle until the tank temperatures drop to a nominal pressure. Now that we have a tank pressure of 280-300 psig, you have exceeded the refueling facility outlet pump pressure of about 90% of the refueling facilities in the US (typically 50 to 75 psig above saturation pressure). The trick with liquid propane injection is controlling tank temperatures. Toss in that US grade motorfuel tanks have 312.5 psig pressure relief valve ratings and there isnt much room for error. Hmm, a quick look at my temperature/pressure curve for propane at 20 bar shows about 140 degrees F. RE: supercharged 392 hemi liquid propane injection remcolent (Automotive) If you want to stick with the Megasquirt, then this may be an option. There are both low impedance (Z - approx 2 Ohms) and high impedance (Z - 12-16 Ohms) variants available. We had no propane durability test capabilities, and chose to let the customer buy it, test it, and ensure that it would work. I know we used to sell that injector type as a trimmer valve for LPG powered buses, although we didn't warranty it for such. I used to work at the facility that SMP now owns. These should be robust enough for liquid propane use. They have a picture of 5 SMP produced injector variants plastered on their home page, with little RC Engineering labels wrapped around the injector's body location groove, listed as 'high flow injectors'. These are available in low volumes through a company called RC Engineering. RE: supercharged 392 hemi liquid propane injection patprimmer (Publican) 11 Jul 07 18:57Īnother option would be to use a plate type injector manufactured by SMP. The other option is to use 16 vialle LPI injecors and let the megasquirt ECU controll the vialle ECU. This way I would need 2 injectors per cilinder, and the injectors have a ultra low Z, this is way to low for the megasquirt ECU.Īre there high volume injectors with a high to med Z ? The LPI injectors from vialle are rated at 50 hp per injector How to get a fixed fuel presure about 150 psi. I'm thinking of using a megasquirt ECU but I found the next problems.ġ: The standard LPI pump gives a LPI presure of about 50 psiĪbove tank presure and tank presure is not constant. I want to run the engine on liquid propane ,īecouse propane is a cheap fuel overhere, injecting liquid propane will cool the temp below the supercharger nicely.Ĩ.0 compresion with 14 psi boost is to high for gas but great for propane. I'm building a 392 hemi with a 6-71 supercharger.

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