Re: OT: LOOK AT THIS VIDEO OF THE NEW FORD DIESEL-FLAMES OUT THE TAILPIPE

On Apr 11, 3:18 pm, "RonKZ650" <RonKZ...@xxxxxxx> wrote:
I'd have to agree with Karl. How could it logically happen with
diesel? Hello, diesel does "not" burn unless compressed highly. You
could spray diesel fuel right past a lit torch and all it would do is
smother. These flames look more like propane being ignited by a torch.
On Apr 11, 1:08?pm, "KarlZona" <hondaru...@xxxxxxxxx> wrote:


WOW, gotta disagree big time on this one.

I'd dare you to try to spray diesel fuel past a match and see what
happens, but I don't need a lawsuit. I hope you meant you cuold put
out a match in a can of diesel, but not spray over a flame.

Atomized Diesel fuel is VERY combustable. You have to remember the
basic fire triangle. Heat, surface area and pressure.

Diesel Fuel / Air mix is compressed to a very high ratio. There is
very little fuel used in a diesel engine, but there is fuel in the
combustion chamber. This is why diesels are so powerful and
efficient: Small fuel, a lot of air, high compression and BOOM =
Power

Now take a spay bottle and fill it with K-1 or Diesel or Jet-A and
spray it over a flame. Atomized fuel burns very quickly with little
effort. The droplets and the fumes will create a very large
fireball. Please just trust me on this and don't try this at home.

Heat is the third component. If you heat the fuel to its flash point,
no flame source is needed, it will just combust. It's also one of the
reasons why Jet engine and Diesel engines are self sustaining. A
spark or glow plug to get it going, but then the igition source shuts
down and the engine continues to run. In the case of the Jet engine,
the heat sustains the flame. In the case of the diesel, the heat
combined with a high compression ratio sustains the flame.

And yes, Korn. There is a fuel / air mix in a diesel engine. Without
the fuel, the air cannot sustain the engine running. It needs a small
amount of fuel injected directly into the cylinders to sustain
combustion.

As soon as someone figures out how to keep an engine running on water
mist or ambient air, sell your stocks in the oil companies :-)

Also, while you cannot compress a liquid (well, that's also debated,
but the compression is minimal), the atomized fuel air mix does
compress and most liquid is converted to vapor just prior to
combustion due to the heat / pressure.

Which is what I think you were trying to say. Using the word 'air'
was just too generic. I think you meant fuel vapor / oxygen mix, not
liquid diesel, etc...

While I don't know if this video or the recal is real or not, I have
seen flames like this shoot out of jet engines during a hot start.
I've also seen a run-away jet engine on a PT-6 which produced similar
results. I also know there are spark-arestors on locomotives and
large diesel equipment to minimize sparks and flames from shooting out
of the exhausts of said equipment.

-Ken
www.Team-EM.com

.

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