Natural Gas instead of petrol

[Alex]

Mark a Reed wrote:
> 
> Hi all,
> 
> Could a EFI system be converted easily to Natural Gas by connecting
> the fuel rail to a gas bottle with the appropriate pressure
> regulator?
> 
> If the regulation pressure was set correctly then the fuel/air
> mixture could be set to allow the use of existing mixture maps in the
> EFI system.
> 
> Is this feasible or a wild dream ?
> 
> Mark Reed
> Farnborough UK
> 
> mareed at dra.hmg.gb


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Hi Mark

Your idea may be hard to put into practice.  A wild dream; maybe not
because men do fly to the moon and yet they said it was impossible
once.....

Normally, the gas must go from its cylinder (liquid storage=very cold),
to a convertor (liquid gas heated by eng. coolant to become gas as we
know it), and then to a mixing ring where it is allowed to evenly
disperse into the incomming air supply. If you were to inject the gas as
a liquid it will cause freezing problems around your fuel rail and who
knows how it will respond once inside the cylinder. It doesn't go 'bang'
as well as pump gas when in its gaseous state so it will probably react
even worse if injected as a liquid. BUT!!! if you work out a way to do
it you will make a cool fortune.

Regards 

Alex.

PS An old mate of mine became a diesel mech. He said once that on some
trucks they use LPG in a similar manner to the way 'petrol heads' use
NO2 in cars.