Ancient History

[Dirk Wright]

On Mon, 2 Sep 1996, Robert J. Harris wrote:
> 
> Liquid fuel does not burn - period.  It must be vaporized before it burns.
> All forms of carboration - including fuel injection - atomize the fuel
> hoping enough vapor will be formed to start combustion so that the heat and
> violence of combustion will finish the job.  Power and fuel efficiency are
> directly related to how well that is done.

Um, sorry. Gasoline vapor explodes, it does not burn. Liqiud gasoline 
burns. Gasoline vapor ignited in a combustion chamber will cause 
detonation, which is highly undesirable. The spark ignites atomized 
gasoline droplets as they pass through the spark plug gap during the end 
of the compression stroke. The transformation of liquid gasoline droplets 
into hot exhaust gases by the process of combustion is what pushes 
against the piston during the power stroke. Gasoline vapor is not what is 
desired. What is desired is extremely fine gasoline droplets of uniform 
size. This is where fuel injection is superior to carburation. The 
droplets are more uniform with fuel injection than they are with 
carburation. 

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Dirk Wright 					            wright at uspto.gov
"I speak for myself and not my employer."               1974 Porsche 914 2.0
"A real hifi glows in the dark and has horns."            1965 Goodman House
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