[Diy_efi] LPG injection

[Grant Beaty]

> The
> last of the liquid methanol is actually evaporated by the initial heat
from
> the flame front when running pure methanol fuel at stoich or richer !!
>
> Greg

Is this a bad thing? It seems like methanol would be very good at
surpressing det if this were the case. I realize that cooling after the
intake valve has closed does not help the engine ingest more air, but one
can always turn up the boost.

Lots of charge-air cooling without increasing the pressure ratio could push
a turbo out of its effeciency range, although it would of course depend on
the turbo.

The end goal here is (of course) the most amount of power. If you must turn
up the boost to achieve more airflow, I don't see how thats any better or
worse than increasing air density.

Grant

>
>
> >
> >Direct LPG into the ports is nice, good high octane fueling suppliment.
But if
> >you are going for charge air cooling, propane isn't your choice.
> >
> >I DO get those temps. I can make up a graph from one of my logs if you
like.
> >
> >> <cough> I really doubt it, LPG goes from compressed liquid
> >> to a gas - mthanol simply evaporates, the discussion is about
> >> direct LPG injection into the ports...
> >>
> >> rgds
> >>
> >> mike
> >>
> >> At 03:35 PM 18/11/2002 -0800, you wrote:
> >> >LPG gas cools very little. Methanol will be 10x better for charge air
> >> cooling. I
> >> >should know, I get intake temps lower than 20F on a 70F at 30psi of
boost.
> >
> >
> >
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