cng injection

[RMeans]

has anyone done cng injection on their truck? I heard at work a guy was getting 40 to 50 mpg!!!!!!!!!

 

[foolkiller]

well you got my attention... . my father was asking about this recently for his 2nd gen. didn't know what to tell him. i'm guessing if this were true we'd all be on waiting lists for the kit... .



jmo, jeff

 

[wcjp]

Latest Diesel Power had a competitor with CNG installed. At high elevation Diesel mileage was 38mpg. They never mentioned the CNG consumption.

 

[jelag]

CNG or Propane will work..... the object with either gas is that there is an excess amount of air in the combustion chamber. This excess air can be used to provide additional power to the piston with the correct fuel and not add a lot of heat... .

Either gas will work... the key here is that the reported fuel economy is for diesel but I'm guessing doesn't include the cost of the gas or the equipment to supply the gas... .

Remember to do this the gas would have to be in a DOT approved tank and you'd have to go to another filling station to fill it... Now if you had NG at home and could compress it to LNG than you'd have the range that you could get with propane... it would store in the tank as a liquid, go through a special regulator to turn it to a gas and into the engine... .

I have used 100% propane in years past to power gas vehicles. . At one time I had access to large amounts of Propane for 15% of the cost of gasoline... so my work truck and motor home both ran on it... . when I sold both vehicles I turned them back to gasoline I kept the gear.....

Hope this helps...

 

[TAbbott]

I think one of the problems with it, and one of the reasons it's not been as widely accepted as propane fumigation, is that the pressures with CNG are much, much higher. If I remember correctly, it takes something like 12 times the pressure to keep CNG liquid at a given temperature as compared to propane, which means a much stronger (heavier) and more expensive tank.

 

[GHarman]

Cng

Here is a link. The cost of the conversion and the filling station at your gas meter is pretty steep. The bottles for CNG are pressureized up to 3000PSIG. LNG is a whole different animal. GregH



index

 

[jelag]

Yes... . cng is compressed natural gas and its in a gas state in the tank, like oxy, argon, or other gases... LNG is natural gas in a liquid form like propane... but it has to be compressed at a much higher pressure to force it from a gas to a liquid... .