Re: [PSUBS-MAILIST] Back to surface propulsion (generators)

[Warren Greenway <opensourcesub@yahoo.com>]

That is almost right, but not quite. The temperature
of the chamber when the diesel is injected isn't
actually high enough to cause combustion. The 
compression has rise to the point where  the fuel/air
mixture is volatilized, which happens to be very near
top-dead-center. Obviously this is a good thing, since
otherwise you would have holes in your pistons!

Warren.

--- Bob Duncan <katsurencho@yahoo.com> wrote:
> How difficult a normal engine is to crank would have
> to do with the compression ration or how much
> pressure is built up in the combustion chamber. When
> you compress the air in a diesel engine, the
> compression produces heat. When the cold diesel fuel
> is injected into the hot (or warm) cylinder it
> causes spontaneous combustion.
>   Heat is a relative term. Takes 3 things to make a
> fire:  Fuel, Oxygen, and heat.
>  
>   bob duncan
> 
> Michael B Holt <tlohm@juno.com> wrote:
> On Mon, 13 Oct 2003 09:42:16 -0500 David Buchner 
> writes:
> >
> >Do diesel-powered cars have 24 volt starters, and
> two batteries in 
> >series... or did I make that up? Does this mean
> they also have 24 volt 
> >alternators? Which I could use to make a 24 volt
> dedicated 
> >battery-charging generator?
> 
> My diesel Oldsmobile had two batteries and a 12-volt
> system. It
> takes a lot of amps to squeeze diesel fuel enough to
> get it to
> explode ... or so I understand.
> 
> Don't airplanes have 24v systems?
> 
> 
> 
> Mike Holt
> 
> 
>
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