CNG NGV Natural Gas with MeqaSquirt

Grant MacDonald · Post by **Grant MacDonald** » Thu Apr 07, 2005 9:39 pm

I am also interested in using gaseous injection (but with LPG). I understand that the system is much less complicated then injecting LPG in it's compressed state, but I'm still finding it hard to get individual components (as opposed to a full system because I can use MS to control it). As far as I understand if you are injecting it as a gas it doesn't need any additional coding because the density doesn't change unlike LPG. I know there was a big thread on it, but that was for injecting LPG and didn't really cover gaseous injection. I guess this doesn't really help the original poster, but I'm definately on the hunt for info myself.
Grant

tony2ltr · Post by **tony2ltr** » Thu Oct 27, 2005 6:59 pm

Well, I'll put my third cent in. I am about to try CNG injection on my VW diesel, and may try it on my Cosworth Vega. I am trying to understand how thier flows are rated.
Tony

tony2ltr · Post by **tony2ltr** » Wed Jul 19, 2006 5:59 am

I think part of the problem, is that once lpg is compressed to as little as 50 psi, it remains a liquid at ambient temperature. What I have found, is that the proper way is to inject it as a liquid, above 50 psi, this way, it is similar to gasoline, but without needing the additional enrichments(TPS based Asynchronous for acceleration) This way though, you actually need a fuel pump, or air pump to pressurize the system.