<VV> Alt Fuels (NO HYDROGEN), slight Corvair content....

[PatioMatt at aol.com]

In a message dated 4/22/2009 3:58:35 P.M. Pacific Daylight Time,  
jwilson at unctv.org writes:

Things I have sometimes wondered about but don't quite understand:  
what is the difference between CNG (compressed natural gas) and LPG  
(liquified petroleum gas) and 'Propane'? 
=================================================


  1  CNG  compressed natural gas  approx. 2500  psi.. lower BTU's than 
gasoline... not enough range with tanks that fit cars /  pickups
 
2  LNG liquefied  NG      -400F!   pressurizes as it warms... 100 times 
more  in same  space...but a complex system.
 
3   LPG   as you think!  200 psi    about 9/10 the energy of gasoline.
 
2 types of LPG      propane  and  Butane    both have approx. the same 
BTU's, simple  system  to expand  liquid to supply enough for an engine while 
using a small  tank.
 
But Butane FREEZES at 35 F!    You use it in Summer  only..
==========================================
 
Most cars, trucks, etc in Private Hands have used LPG...



Matt  Nall
All Vairs!
Visit my Webpages!  tinyurl.com/The-Patio
somewhere between Sea Mountain and Coos Bay.  OR.



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