Because there's more to the internet than hits alone, Biker_Bry
wrote:


Any temperature increase under the hood in relation to the injector, rails
and fuel lines
will create pressure in the lines, and will continue to collect heat until
the fuel goes critical,

The heat collected by anything will be limited to the temperature of
what it is in contact with - fuel lines will not 'continue to collect
heat' once a common temperature has been reached. In a common rail
system the captive pressure in the fuel lines will be limited by a
regulator on the tank return; as long as tank pressure remains less
than pumped pressure the pressure in the fuel lines will not increase.
The fuel is continually cycling back to the tank so the fuel system
effectively becomes self cooling.

4. Fuel Pump must be inside the tank, so how do you pass wires through a
fuel tank and have it safe?

I've often wondered about getting wires into the tank in order to make
an effective fuel guage sender a possibility. But in fact I don't
really think it would be an insurmountable problem. Probably quite
easy, in fact - a solid connector embedded in enough vitreous sealant
that passes through the multivalve.

Tank must still meet all safty regulations... Would this still be possible
with a passthrough?

I would have thought this was elementary engineering. Whether or not
there are regulations that prevent it is another matter.


Mixing air/fuel *before* the cylinder breeds backfires and they will
cause
serious problems.
Ask anyone tha has used an old Impco system.

Do you mean specifically in the case of *liquid* fuel injection? Why
would this be? ATM all LPG systems mix the fuel and air before the
cylinder.

Newer intake manifulds are plastic, and can contain as much as 2.0 Cubic
Meters of
air fuel mixture ( with a vapor fogging type system).
One backfire with the hood (bonnet) up and you will be picking shards of
plastic out of your
face :-) (ouch)!

First off, you don't have room for 2 cubic meters of anything under
the bonnet - not even under the hood of a yank tank.

But I'm not sure I understand your point. ALL current LPG conversions
mix fuel and air before the cylinder; how else could you do it? This
is not the cause of backfires - a weakness elsewhere is - typically in
the ignition system. Are you suggesting that liquid injection incurs
other, additional, factors that lead to backfires?




--

Stewart Hargrave

Finally visible on www.hargrave.me.uk

I run on beans - laser beans


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