craig,
some interesting points you bring up. i drove a lot of the ford pre
production straight LPG prototypes, and although you mentioned
the literature says they produce similar power down low before
tapering off, funnily on the road they felt the reverse. ie less power
than petrol down low, but similar high up.
i know the engines are specifically modified/optimised for LPG....its
not just marketing hype. australia's supposed leading expert in
power generation systems from melbourne university had a lot to
do with the straight LPG engine (btw I think he agrees with you
regarding fuel cells being the way of the future....)
andrew
and thanks for the R31 conversion thing!!!!!
Date sent: Fri, 03 Nov 2000 13:18:53 +1100
From: Craig Overend <[EMAIL PROTECTED]>
To: [EMAIL PROTECTED]
Send reply to: [EMAIL PROTECTED]
Subject: Re: performance gas!
> >From what I hear there are problems with differing quality of LPG
> available, so your never know what mix you get. My brother runs his HQ
> Holden on gas an has noticed the problem with different batches of fuel.
> I was speaking to an ex EPA guy who said the govenment had told them to
> investigate swithing the whole Vic fleet to gas using the straight gas
> Falcons etc. I was browsing through the Ford literature he had on the
> performance of them, it showed similar power up to 3000rpm and then a
> constant taper off compared to the pertol. I put this down to the pertol
> having poor mixing capabilities at low rpm improving as engine speed and
> turbulence increases compared to LPG. The Ford engines are supposedly
> modified for LPG, to what extent I dont know. However because of the
> lower specifc heat energy rating of gas you need to use more to generate
> the same power(richer). The advantage it has, is being a gas, mixing is
> improved for cleaner combustion and generally a higher octane allowing
> higher cylinder pressures before pre-ignition sets in. This allows
> higher compression or more boost to be run. One problem I see with gas
> is throttle response and metering of the gas. With petrol the injectors
> supply additional fuel when you plant your foot richening the mixture
> much faster for better engine response. With carbies you get the
> acceleration pump that does the same thing. As far as I know LPG systems
> dont have this. I did read about a company that was developing a gas
> injection system a while back.
> Another thing to consider is if you run out of gas on a dedicated gas
> system you need a tow truck!
>
> I am very interested in some of the alternate fuel systems that are
> slowly appearing, I'm not talking electic hybrid cars here. My ultimate
> performance fuel source is Hydrogen obtained from water, H20, there are
> quite a few people that claim to have worked it out. It'd cost you
> nothing to fill your car up with high octane fuel! I see it as just a
> matter of time.
>
> Craig.
>
>
> Tim Piggott wrote:
> >
> > hey list
> >
> > after speaking to a few people i have decided to put my potential project
> > car (sss 200b coupe- to a sr20T) onto gas, straight gas not dual. What is
> > this lists opinion on gas for performance? Any experiences?
> >
> > Where is the best place to find out about preformance gas conversions.
> >
> > does anyone also know of a good gas team around the , portland (nsw),
> > lithgow, bathurst areas.
> >
> > Any help would be appreciated.
> >
> > ---------------------------
> > Cheers
> > Thunda
> >
> > _________________________________________________________________________
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> >
>
>
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